CN108244995B - Pressure cooker and control method thereof - Google Patents

Abstract

The invention discloses a pressure cooker and a control method thereof, comprising the following steps: judging whether the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user; if judge that the time that the pressure cooker got into the step-down stage is in user sleep time section, then wait to get into the reservation latency of heating stage and/or improve the predetermined heating power of heating stage through reducing the pressure cooker, control pressure cooker gets into the step-down stage in advance, and control pressure cooker reduces the pressure with the natural cooling mode in the step-down stage, thereby can prevent effectively that the too big sleep of pressure release sound from causing the influence to the user in user sleep time section, and can guarantee that the pressure cooker uncaps fast, can guarantee that the pressure cooker uncaps fast in non-user sleep time section, thereby the maximize satisfies different environment, different crowds' culinary art demand, user experience has been promoted.

Description

Pressure cooker and control method thereof

Technical Field

The invention relates to the technical field of household appliances, in particular to a control method of a pressure cooker and the pressure cooker.

Background

Pressure cookers in the related art generally employ a pressure relief device to quickly release pressure in the electric pressure cooker, thereby achieving quick opening of the cover. However, the related art has the disadvantages that a rapid cover opening mode can generate large sound, especially in the initial stage of pressure relief, the air exhaust through the pressure relief device can generate very large sound, and if the user is resting at the moment, the sleep of the user can be seriously affected, and the user experience is poor.

Therefore, improvements are needed in the related art.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, it is an object of the present invention to provide a control method of a pressure cooker, which can prevent the pressure cooker from being loud and affecting the sleep of a user.

Another object of the present invention is to provide a pressure cooker.

In order to achieve the above object, an embodiment of an aspect of the present invention provides a control method for a pressure cooker, including the following steps: judging whether the time when the pressure cooker enters the pressure reduction stage is in a user sleep time period or not; and if the time that the pressure cooker enters the pressure reduction stage is judged to be in the sleep time period of the user, the pressure cooker is controlled to enter the pressure reduction stage in advance by reducing the reserved waiting time that the pressure cooker waits for entering the heating stage and/or improving the preset heating power of the heating stage, and the pressure cooker is controlled to reduce the pressure in a natural cooling mode in the pressure reduction stage.

According to the control method of the pressure cooker provided by the embodiment of the invention, whether the time of the pressure cooker entering the pressure reduction stage is in the sleep time period of the user is judged, if the time of the pressure cooker entering the pressure reduction stage is in the sleep time period of the user, the pressure cooker is controlled to enter the pressure reduction stage in advance by reducing the reserved waiting time of the pressure cooker waiting to enter the heating stage and/or improving the preset heating power of the heating stage, and the pressure cooker is controlled to reduce the pressure in the pressure reduction stage in a natural cooling mode, so that the influence of the overlarge sound of the pressure cooker on the sleep of the user can be effectively prevented in the sleep time period of the user, the pressure cooker can be guaranteed to finish cooking in the reserved time and the cooking effect can be guaranteed, the cooking requirements of different environments and different crowds can be met.

According to an embodiment of the invention, if the time that the pressure cooker enters the pressure reduction stage is not in the sleep time period of the user, the pressure cooker is controlled to enter the heating stage after waiting for the reserved waiting time, the pressure cooker is controlled to be heated at the preset heating power in the heating stage, and the pressure is reduced through a pressure relief device in the pressure reduction stage.

Therefore, the pressure cooker can be rapidly opened in the sleep time period of the non-user, so that the cooking requirements of different environments and different crowds are met to the maximum degree, and the user experience is improved.

According to an embodiment of the invention, whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period is judged according to the reservation time input by the user, wherein if the reservation time input by the user is greater than a preset time threshold, the time when the pressure cooker enters the pressure reduction stage is judged to be in the user sleep time period.

According to an embodiment of the present invention, the method for controlling the pressure cooker further comprises determining whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period according to a local time, wherein if the local time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, the time when the pressure cooker enters the pressure reduction stage is determined to be in the user sleep time period.

According to one embodiment of the invention, if an opening instruction input by a user is received, the heating device of the pressure cooker is controlled to stop heating and the pressure relief device of the pressure cooker is controlled to be closed in the pressure reduction stage.

According to an embodiment of the present invention, the method for controlling a pressure cooker further comprises: and if the time that the pressure cooker enters the pressure reduction stage is judged to be in the sleep time period of the user, controlling the sound device of the pressure cooker to stop working.

In order to achieve the above object, according to another embodiment of the present invention, a pressure cooker is provided, in which a cooking stage of the pressure cooker includes a pressure raising stage, a pressure maintaining stage and a pressure reducing stage, a cooking mode of the pressure cooker includes a sleep mode, and the pressure cooker includes: a heating device; a pressure relief device; the control device is used for judging whether the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user or not, and when the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user, the control device controls the pressure cooker to enter the pressure reduction stage in advance by reducing the reserved waiting time when the pressure cooker waits for entering the heating stage and/or improving the preset heating power of the heating stage, and controls the pressure cooker to reduce the pressure in a natural cooling mode in the pressure reduction stage.

According to the pressure cooker provided by the embodiment of the invention, whether the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user is judged through the control device, and when the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user, the control device controls the pressure cooker to reduce the pressure in a natural cooling mode in the pressure reduction stage, so that the influence of the overlarge sound of the pressure cooker on the sleep of the user can be effectively prevented in the sleep time period of the user, the pressure cooker can be guaranteed to finish cooking in the reserved time, the cooking effect is guaranteed, the cooking requirements of different environments and different people groups are met to the maximum, and the user experience is improved.

According to an embodiment of the present invention, the control device is configured to, when the time when the pressure cooker enters the pressure reduction stage is not in the sleep time period of the user, wait for the scheduled waiting time, control the pressure cooker to enter the heating stage, control the pressure cooker to be heated at the preset heating power in the heating stage, and reduce the pressure in the pressure reduction stage through the pressure relief device.

Therefore, the pressure cooker can be rapidly opened in the sleep time period of the non-user, so that the cooking requirements of different environments and different crowds are met to the maximum degree, and the user experience is improved.

According to an embodiment of the present invention, the control device determines whether the time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period according to a user-input reserved time, wherein the control device is configured to determine that the time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period when the user-input reserved time is greater than a preset time threshold.

According to an embodiment of the present invention, the control device determines whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period according to the local time, wherein the control device is configured to determine that the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period when the local time when the pressure cooker enters the pressure reduction stage is in the user sleep time period.

According to an embodiment of the present invention, the control device is configured to, when receiving an opening instruction input by a user, control the heating device of the pressure cooker to stop heating and control the pressure relief device of the pressure cooker to close in the pressure reduction stage.

According to an embodiment of the invention, the pressure cooker further comprises: the sound device is connected with the control device, and the control device is used for controlling the sound device to stop working when the pressure cooker enters the pressure reduction stage and the user sleeps for a period of time.

Drawings

Fig. 1 is a flowchart of a control method of a pressure cooker according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method of controlling a pressure cooker according to an embodiment of the present invention;

FIG. 3 is a block schematic diagram of a pressure cooker according to an embodiment of the invention;

FIG. 4 is a block schematic diagram of a pressure cooker in accordance with an exemplary embodiment of the present invention; and

fig. 5 is a block schematic view of a pressure cooker according to an embodiment of the invention.

Reference numerals:

the pressure cooker comprises a pressure cooker 100, a heating device 10, a pressure relief device 20 and a control device 30;

temperature detection means 101 and pressure detection means 102;

a timing unit 301; an audio device 40.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The pressure cooker and the control method thereof according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a flowchart of a control method of a pressure cooker according to an embodiment of the present invention. As shown in fig. 1, the control method of the pressure cooker includes the steps of:

s10: and judging whether the time for the pressure cooker to enter the pressure reduction stage is in the sleep time period of the user.

According to an embodiment of the present invention, the user may sleep for a period of time from 21 o 'clock at night to 8 o' clock the next day.

S20: if the time that the pressure cooker enters the pressure reduction stage is judged to be in the sleep time period of the user, the pressure cooker is controlled to enter the pressure reduction stage in advance by reducing the reserved waiting time that the pressure cooker waits for entering the heating stage and/or improving the preset heating power of the heating stage, and the pressure cooker is controlled to reduce the pressure in a natural cooling mode in the pressure reduction stage.

Specifically, when the pressure cooker is depressurized in a natural cooling mode, the working time of the depressurization stage is long, and if the time when the pressure cooker enters the depressurization stage is determined to be in the sleep time period of the user, the pressure cooker needs to be controlled to enter the depressurization stage in advance to ensure that the pressure cooker has enough time to depressurize in the natural cooling mode in the depressurization stage, and the time when the pressure cooker enters the depressurization stage is in the sleep time period of the user and the time when the pressure cooker enters the depressurization stage is not in the sleep time period of the user, so that the cooking can be completed in the same time basically.

More specifically, when the scheduled cooking is performed, the scheduled time set by the user may be a time when the pressure cooker completes cooking or a time when the pressure cooker starts to perform cooking, and the scheduled waiting time is a waiting time when the pressure cooker waits to enter the heating stage. If the preset time set by the user is the time for starting the pressure cooker to cook, the preset waiting time is a preset value, and the working time of the heating stage of the pressure cooker is shortened by improving the preset heating power of the heating stage so as to control the pressure cooker to enter a pressure reduction stage in advance; if the reservation time set by the user is the time for completing the cooking of the pressure cooker, the reservation waiting time for waiting for the pressure cooker to enter the heating stage is reduced, for example, the fifth preset time is subtracted from the reservation waiting time, so as to shorten the waiting time for the pressure cooker to enter the heating stage, and thus the pressure cooker is controlled to enter the pressure reduction stage in advance.

It should be noted that, in the embodiment of the present invention, the waiting time of the pressure cooker entering the heating phase can be shortened by reducing the scheduled waiting time of the pressure cooker waiting for entering the heating phase, and the preset heating power of the heating phase is increased to shorten the working time of the pressure cooker heating phase, so as to control the pressure cooker to enter the pressure reduction phase in advance.

According to an embodiment of the invention, if the time for the pressure cooker to enter the pressure reduction stage is not in the sleep time period of the user, the pressure cooker is controlled to enter the heating stage after waiting for the scheduled waiting time, and is controlled to be heated at the preset heating power, such as the first power P1, in the heating stage, and is reduced in pressure by the pressure relief device in the pressure reduction stage.

That is to say, when the time that the pressure cooker got into the step-down stage was in user sleep time section, pressure cooker did not open pressure relief device in the step-down stage, control pressure cooker through the natural cooling mode and carry out the pressure release, and control pressure cooker and get into the step-down stage in advance, thereby prevent that the pressure release sound from influencing user's sleep, and when the time that the pressure cooker got into the step-down stage was not in user sleep time section, pressure cooker opened pressure relief device in the step-down stage, carry out quick pressure release through pressure relief device to the pressure in the pressure cooker, thereby realize uncapping fast.

Specifically, taking the reservation time input by the user as the time for completing the cooking of the pressure cooker as an example, the user may reserve the cooking according to the requirement, and after receiving the reservation time input by the user, the reservation waiting time for the pressure cooker to enter the heating stage may be obtained according to the reservation time, and then the reservation waiting time may be adjusted according to the cooking mode of the pressure cooker, so as to reserve sufficient time for the subsequent cooking stages, such as the pressure starting stage, the pressure maintaining stage, and the pressure reducing stage. Wherein, after the user inputs the appointment time and before the pressure cooker enters the heating stage, the pressure cooker is in the waiting stage, and the heating device of the pressure cooker is closed at the moment.

More specifically, if it is judged that the time when the pressure cooker enters the pressure-reducing stage is not in the user sleep time period, the waiting time when the pressure cooker enters the heating stage is maintained as the scheduled waiting time, i.e., the first preset time t1, and after waiting for the first preset time t1, the pressure cooker is controlled to enter the next cooking stage, i.e., the pressure-starting stage. If the time for the pressure cooker to enter the pressure reduction stage is judged to be in the sleep time period of the user, the waiting time for the pressure cooker to enter the heating stage is reduced, for example, the fifth preset time is subtracted from the reserved waiting time, and if the waiting time for the pressure cooker to enter the heating stage is reduced to the fourth preset time t4, after waiting for the fourth preset time t4, the pressure cooker is controlled to enter the next cooking stage, namely, the pressure starting stage.

It should be noted that, because the time required for completing the pressure reduction when the pressure cooker enters the pressure reduction stage is not in the user sleep time period is shorter, and the time required for completing the pressure reduction when the pressure cooker enters the pressure reduction stage is in the user sleep time period is longer, if the reservation time is the same, the waiting time of the waiting stage when the time for entering the pressure reduction stage is in the user sleep time period is longer than the waiting time of the waiting stage when the time for entering the pressure reduction stage is not in the user sleep time period, that is, the first preset time t1 is longer than the fourth preset time t4, so that the time for entering the pressure reduction stage by the pressure cooker in the user sleep time period and the time for entering the pressure reduction stage by the pressure cooker in the user sleep time period can be guaranteed to complete the cooking in substantially the same time.

According to an embodiment of the present invention, the pressure relief device may include an exhaust assembly and/or a cooling fan, wherein the exhaust assembly may be disposed on the upper cover of the pressure cooker, and the cooling fan may be disposed on the body of the pressure cooker. Specifically, the user can make an appointment according to the requirement, when the appointed cooking time is reached, the pressure cooker starts to cook, and the pressure starting stage, the pressure maintaining stage and the pressure reducing stage are sequentially started. Wherein, in the pressure starting stage, the heating device is controlled to heat so as to gradually increase the pressure in the pressure cooker; in the pressure maintaining stage, the heating device is continuously controlled to heat, so that the food materials in the pressure cooker absorb enough heat to achieve the effect of reasonable cooking; and in the pressure reduction stage, controlling the heating device to stop heating so as to gradually reduce the pressure in the pressure cooker, selecting a pressure reduction mode such as natural cooling or pressure reduction of a pressure relief device according to whether the pressure cooker is in a mute mode, judging that the pressure reduction is finished when the pressure Pa in the pressure cooker is lower than a preset pressure threshold Pmin, and finishing the cooking process.

More specifically, after the pressure cooker starts to cook, firstly acquiring time of the pressure cooker entering a pressure reduction stage, and judging whether the time of the pressure cooker entering the pressure reduction stage is in a user sleep time period or not, if so, controlling the pressure cooker to execute a control program corresponding to the user sleep time period, namely, after entering the pressure reduction stage, controlling a heating device of the pressure cooker to stop heating and controlling a pressure relief device of the pressure cooker, such as an exhaust assembly, to be closed, at the moment, the temperature in the pressure cooker is naturally cooled, the pressure in the pressure cooker is gradually reduced, and pressure relief sound cannot be emitted, so that the pressure relief sound is prevented from influencing the sleep of a user; if the time that the pressure cooker enters the pressure reduction stage is not in the user sleep time period, the pressure cooker is controlled to execute a control program corresponding to the non-user sleep time period, namely after the pressure reduction stage is entered, a heating device of the pressure cooker is controlled to stop heating, and a pressure relief device of the pressure cooker, such as an exhaust assembly, is controlled to be opened.

Therefore, the method provided by the embodiment of the invention can prevent the pressure cooker from being influenced by overlarge sound in the sleep time period of the user, can ensure that the pressure cooker completes cooking in the appointed time and ensures the cooking effect, and can ensure that the pressure cooker is quickly opened in the sleep time period of the non-user, so that the cooking requirements of different environments and different people are met to the maximum extent, and the user experience is improved. According to one embodiment of the invention, whether the time for the pressure cooker to enter the pressure reduction stage is in the user sleep time period or not is judged according to the reservation time input by the user, wherein if the reservation time input by the user is greater than a preset time threshold, the time for the pressure cooker to enter the pressure reduction stage is judged to be in the user sleep time period. And if the appointment time input by the user is judged to be less than or equal to the preset time threshold, judging that the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user.

Specifically, the user can reserve cooking on demand, for example, by inputting a desired reservation time through a key, after the appointment time input by the user is acquired, whether the appointment time input by the user is larger than a preset time threshold value, for example, 6 hours is judged, if the reservation time input by the user is judged to be more than 6 hours, the user performs reservation setting in the evening of the previous day, and the pressure cooker starts to cook when the appointed cooking time is reached in the next morning, so that the user may have a rest when the pressure cooker enters the pressure reduction stage, therefore, the time for the pressure cooker to enter the pressure reduction stage is judged to be in the sleep time period of the user, namely, in the pressure reduction stage, the heating device of the pressure cooker is controlled to stop heating and the pressure relief device of the pressure cooker is controlled to be closed, at the moment, the pressure cooker releases pressure in a natural cooling mode, the pressure in the pressure cooker is gradually reduced, and no pressure release sound is generated. If the reserved time input by the user is judged to be less than or equal to 6 hours, the time for the pressure cooker to enter the pressure reduction stage is judged not to be in the sleep time period of the user, namely, the pressure relief device of the pressure cooker is controlled to be opened in the pressure reduction stage, so that the pressure is quickly relieved, and the effect of quickly opening the cover is achieved. It should be noted that, according to the usage habit of the user, the reservation time in the non-user sleep time period is generally smaller than the preset time threshold, so that when the reservation time input by the user is greater than the preset time threshold, the user can be defaulted to perform reservation setting in the evening of the previous day, and the time when the pressure cooker enters the pressure reduction stage is set to be in the user sleep time period.

According to another embodiment of the present invention, the control method of the pressure cooker further comprises judging whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period according to the local time, wherein if the local time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, the time when the pressure cooker enters the pressure reduction stage is judged to be in the user sleep time period. And if the local time when the pressure cooker enters the pressure reduction stage is not in the sleep time period of the user, judging that the time when the pressure cooker enters the pressure reduction stage is not in the sleep time period of the user.

Specifically, a clock module or a WIFI module can be arranged in the pressure cooker to obtain the local time in real time, and obtain the local time when the pressure cooker enters the pressure reduction stage, determine whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, if the local time when the pressure cooker enters the pressure reduction stage is in the user sleep time period (for example, 21 o 'clock to 8 o' clock of the next day), then determine that the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, that is, after entering the pressure reduction stage, control a heating device of the pressure cooker to stop heating and control a pressure relief device of the pressure cooker to close, at this time, the pressure in the pressure cooker is relieved in a natural cooling mode, the pressure in the pressure cooker is gradually reduced. If the local time when the pressure cooker enters the pressure reduction stage is in the user sleep time period (for example, 21 o 'clock at night to 8 o' clock at the next day), the time when the pressure cooker enters the pressure reduction stage is not in the user sleep time period, namely, the pressure relief device of the pressure cooker is controlled to be opened in the pressure reduction stage, so that the rapid pressure relief is realized, and the effect of rapidly opening the cover is achieved.

According to an embodiment of the present invention, the local time when the pressure cooker enters the pressure reduction stage can be obtained according to the scheduled time. For example, assuming that the operation time td of the pressure reduction stage when the pressure cooker opens the pressure relief device is 20min, and the operation time t3 of the pressure cooker in the heating stage, such as the pressure rise stage and the pressure maintaining stage, is 30min, the local time when the pressure cooker enters the pressure reduction stage can be obtained according to the scheduled time. For example, when the scheduled cooking is performed, if the local time t0 is 22 o 'clock at night and the time t Δ of the scheduled cooking by the user is 9 hours, the pressure cooker completes the cooking after 7 o' clock in the next morning, and at this time, the local time when the pressure cooker enters the pressure reduction stage is judged to be 6:10 in the morning, that is, the user is in the sleep time period.

According to another embodiment of the invention, if an opening instruction input by a user is received, the heating device of the pressure cooker is controlled to stop heating and the pressure relief device of the pressure cooker is controlled to be closed in the pressure reduction stage.

Specifically, a key or a switch may be disposed on an operation panel of the pressure cooker to receive an opening instruction, if a user needs to rest during cooking, the opening instruction may be input through the key or the switch, for example, the sleep opening key is pressed down or the sleep opening switch is turned on, after the opening instruction input by the user is received, the heating device of the pressure cooker is controlled to stop heating and the pressure relief device of the pressure cooker is controlled to be turned off in a pressure reduction stage, at this time, pressure is relieved in the pressure cooker in a natural cooling manner, and the pressure in the pressure cooker is gradually reduced without generating pressure relief sound.

In addition, in an embodiment of the invention, a user can input a cancellation instruction through a key or a switch, and after receiving the cancellation instruction, the pressure relief device can be controlled to be opened in a pressure reduction stage, so that the quick pressure relief and the quick cover opening are realized.

According to a specific embodiment of the present invention, the pressure cooker further comprises a temperature detecting means and a pressure detecting means, wherein the pressure detecting means is used for detecting the pressure in the pressure cooker to generate a pressure detecting signal, and the temperature detecting means comprises: the temperature detection device is used for detecting the temperature in the pressure cooker so as to generate a temperature detection signal. The pressure cooker can also comprise a timing unit which is used for timing the working time of the pressure cooker so as to generate a time detection signal, the pressure cooker can acquire the current temperature T in the pressure cooker according to the temperature detection signal, acquire the current working time T according to the time detection signal and control the pressure cooker to sequentially judge whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, the waiting stage, the pressure starting stage, the pressure maintaining stage and the pressure reduction stage according to the current temperature T and the current working time T.

In the foregoing embodiments, it is determined whether the time when the pressure cooker enters the pressure reduction stage is within the sleep time period of the user, the waiting stage, and the pressure reduction stage, which is not described in detail.

And after the waiting stage is finished, acquiring a temperature detection signal and a time detection signal in the pressure cooker in real time, and controlling the pressure cooker to sequentially execute a pressure starting stage, a pressure maintaining stage and a pressure reducing stage according to the temperature detection signal and the time detection signal. It should be noted that, for the time when the pressure cooker enters the pressure reduction stage and the time when the pressure cooker enters the pressure reduction stage are not in the user sleep time period, the control modes of the pressure starting stage and the pressure maintaining stage are basically the same, and the control modes of the waiting stage and the pressure reduction stage are different.

Specifically, after the pressure cooker enters a pressure starting stage, the heating device is controlled to heat with first power P1, so that the pressure in the pressure cooker is rapidly increased, the rapid pressure starting is completed, the current temperature and the working time of the current stage are obtained in real time, whether the current temperature is greater than a first preset temperature threshold value T1 or not is judged, and if the temperature is greater than the first preset temperature threshold value T1, the pressure cooker is controlled to enter a pressure maintaining stage; if the temperature is less than or equal to the first preset temperature threshold T1, whether the working time of the pressure starting stage is more than a second preset time T2 is further judged. If the working time of the pressure starting stage is less than or equal to the second preset time t2, controlling the heating device to continue heating at the first power P1; and if the working time of the pressure starting stage is greater than the second preset time t2, controlling the pressure cooker to enter the pressure maintaining stage.

After entering the pressure maintaining stage, judging whether the working time of the pressure maintaining stage is greater than a third preset time T3, if the working time of the pressure maintaining stage is less than or equal to the third preset time T3, controlling the heating device to heat with a second power P2, and further judging whether the current temperature is greater than a second preset temperature threshold T2. If the current temperature is greater than a second preset temperature threshold T2, controlling the heating device to heat at a third power P3 or stop heating, wherein the third power P3 is less than the second power P2; if the current temperature is less than or equal to a second preset temperature threshold T2, controlling the heating device to continue heating at a second power P2; and if the working time of the pressure maintaining stage is judged to be greater than the third preset time t3, controlling the pressure cooker to enter a pressure reducing stage. Therefore, the food in the pressure cooker can be ensured to absorb enough heat to achieve the effect of reasonable cooking.

It should be noted that the second predetermined temperature threshold T2 may correspond to the pressure in the pressure cooker during the pressure maintaining period, i.e. the temperature in the pressure cooker is determined by the temperature in the pressure cooker.

As described above, as shown in fig. 2, taking the reserved time as the time for completing the cooking of the pressure cooker as an example, the method for controlling the pressure cooker of the embodiment of the present invention specifically includes the following steps:

s101: the reservation is started.

S102: and judging whether the time for the pressure cooker to enter the pressure reduction stage is in the sleep time period of the user.

If yes, executing step S301; if not, step S201 is performed.

S201: and entering a waiting stage, and controlling the heating device to be closed.

S202: the waiting time is obtained, and whether the waiting time reaches a first preset time t1 is judged.

If yes, go to step S203; if not, step S201 is performed.

S203: and entering a pressure starting stage, and controlling the heating device to heat at a first power P1.

S204: and acquiring the current temperature, and judging whether the temperature is greater than a first preset temperature threshold value T1.

If yes, go to step S205; if not, step S206 is performed.

S205: enter the pressure maintaining stage and execute step S207.

S206: and judging whether the working time of the pressure starting stage is greater than a second preset time t 2.

If yes, go to step S207; if not, step S203 is executed.

S207: and judging whether the working time of the pressure maintaining stage is greater than a third preset time t 3.

If yes, go to step S208; if not, step S209 is performed.

S208: enter the step-down stage and execute step S212.

S209: the heating device is controlled to heat at a second power P2.

S210: and acquiring the current temperature, and judging whether the temperature is greater than a second preset temperature threshold value T2.

If yes, go to step S211; if not, step S209 is performed.

S211: the heating device is controlled to heat at the third power P3, and step S207 is executed.

S212: controlling the heating device to stop heating and controlling the pressure relief device of the pressure cooker to open.

S213: and judging whether the pressure in the pressure cooker is lower than a preset pressure threshold value Pmin.

If yes, go to step S214; if not, step S212 is performed.

S214: and (5) reducing the pressure and finishing the cooking process.

S301: and entering a waiting stage, and controlling the heating device to be closed.

S302: and acquiring the waiting time, and judging whether the waiting time reaches a fourth preset time t 4.

If yes, executing step S303; if not, step S301 is executed.

S303: and entering a pressure starting stage, and controlling the heating device to heat at a first power P1.

S304: and acquiring the current temperature, and judging whether the temperature is greater than a first preset temperature threshold value T1.

If yes, go to step S305; if not, step S306 is performed.

S305: the pressure maintaining stage is entered, and step S307 is executed.

S306: and judging whether the working time of the pressure starting stage is greater than a second preset time t 2.

If yes, go to step S307; if not, step S303 is performed.

S307: and judging whether the working time of the pressure maintaining stage is greater than a third preset time t 3.

If yes, go to step S308; if not, step S309 is performed.

S308: enter the step-down phase and execute step S312.

S309: the heating device is controlled to heat at a second power P2.

S310: and acquiring the current temperature, and judging whether the temperature is greater than a second preset temperature threshold value T2.

If yes, go to step S311; if both, step S309 is performed.

S311: the heating device is controlled to heat at the third power P3 and step S307 is executed.

S312: and controlling the heating device to stop heating and controlling the pressure relief device of the pressure cooker to close.

S313: and judging whether the pressure in the pressure cooker is lower than a preset pressure threshold value Pmin.

If yes, go to step S314; if not, step S312 is performed.

S314: and (5) reducing the pressure and finishing the cooking process.

As described above, when the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, the pressure cooker is controlled to execute the procedures shown in steps S301 to S314 to complete the reserved cooking; and when the time for the pressure cooker to enter the pressure reduction stage is not in the sleep time period of the user, controlling the pressure cooker to execute the procedures shown in the steps S201 to S214 so as to finish the reserved cooking.

Therefore, the method provided by the embodiment of the invention can effectively prevent the influence of the overlarge sound of the pressure cooker on the sleep of the user in the sleep time period of the user, and can ensure that the pressure cooker is quickly opened in the sleep time period of the non-user, so that the cooking requirements of different environments and different people are met to the maximum extent, and the user experience is improved.

According to an embodiment of the present invention, the control method of the pressure cooker further comprises: and if the time for the pressure cooker to enter the pressure reduction stage is judged to be in the sleep time period of the user, controlling the sound device of the pressure cooker to stop working.

Specifically, if the time that the pressure cooker enters the pressure reduction stage is not in the sleep time period of the user, when the pressure cooker is used for cooking, a sound device (such as a buzzer) of the pressure cooker sends out prompt information to prompt that the cooking is started or finished; if the time that the pressure cooker enters the pressure reduction stage is judged to be in the sleep time period of the user, the sound device (such as a buzzer) of the pressure cooker is controlled to stop working, namely, the prompt information is sent out, so that the influence of the prompt information sent out by the sound device (such as the buzzer) on the sleep of the user can be avoided.

In summary, according to the control method of the pressure cooker provided by the embodiment of the present invention, it is first determined whether the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, and if the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, the pressure cooker is controlled to enter the pressure reduction stage in advance by reducing the reserved waiting time when the pressure cooker waits for entering the heating stage and/or increasing the preset heating power in the heating stage, and the pressure cooker is controlled to reduce the pressure in the pressure reduction stage in a natural cooling manner, so that the influence of the loud sound of the pressure cooker on the sleep of the user can be effectively prevented in the user sleep time period, and the pressure cooker can be guaranteed to finish cooking in the reserved time and guarantee the cooking effect, thereby maximally satisfying the cooking requirements of different environments and different people, and improving the.

Fig. 3 is a block schematic view of a pressure cooker according to an embodiment of the invention. As shown in fig. 3, the pressure cooker 100 includes: a heating device 10, a pressure relief device 20 and a control device 30.

Wherein, controlling means 30 is connected with heating device 10 and pressure relief device 20 respectively, and controlling means 30 is used for judging whether the time that pressure cooker 100 got into the step-down stage is in user sleep time quantum, and when the time that pressure cooker 100 got into the step-down stage is in user sleep time quantum, through reducing the reservation latency that pressure cooker 100 waited to get into the heating stage and/or improving the preset heating power of heating stage, control pressure cooker and get into the step-down stage in advance, and control pressure cooker in the step-down stage step-down with the natural cooling mode.

According to an embodiment of the present invention, the user may sleep for a period of time from 21 o 'clock at night to 8 o' clock the next day.

Specifically, since the working time of the pressure cooker 100 during the pressure reduction in the natural cooling manner is longer, if the control device 30 determines that the time when the pressure cooker 100 enters the pressure reduction stage is in the sleep time period of the user, the pressure cooker 100 needs to be controlled to enter the pressure reduction stage in advance to ensure that the pressure cooker 100 has enough time to perform the pressure reduction in the natural cooling manner during the pressure reduction stage, and it can be ensured that the time when the pressure cooker 100 enters the pressure reduction stage is in the sleep time period of the user and the time when the pressure cooker 100 enters the pressure reduction stage is not in the sleep time period of the user to complete the cooking at substantially the same time.

More specifically, when performing the scheduled cooking, the scheduled time set by the user may be a time when the pressure cooker 100 completes cooking or a time when the pressure cooker 100 starts cooking, and the scheduled waiting time is a waiting time when the pressure cooker 100 waits for entering the heating stage. If the reservation time set by the user is the time for starting cooking of the pressure cooker 100, the reservation waiting time is a preset value, and the control device 30 shortens the working time of the heating stage of the pressure cooker by increasing the preset heating power of the heating stage to control the pressure cooker 100 to enter the pressure reduction stage in advance; if the reservation time set by the user is the time for the pressure cooker 100 to finish cooking, the reservation waiting time for the pressure cooker 100 to wait for entering the heating stage is reduced, for example, the fifth preset time is subtracted from the reservation waiting time to shorten the waiting time for the pressure cooker to enter the heating stage, thereby controlling the pressure cooker 100 to enter the pressure-reducing stage in advance.

It should be noted that, in the embodiment of the present invention, the waiting time of the pressure cooker 100 entering the heating phase can be shortened by reducing the scheduled waiting time of the pressure cooker 100 waiting to enter the heating phase, and the preset heating power of the heating phase is increased to shorten the working time of the heating phase of the pressure cooker 100, so as to control the pressure cooker 100 to enter the pressure reduction phase in advance.

According to an embodiment of the present invention, the control device 30 is configured to control the pressure cooker 100 to enter the heating stage after waiting for the scheduled waiting time when the pressure cooker 100 enters the pressure reducing stage is not in the user sleep time period, and control the pressure cooker 100 to heat at the preset heating power, for example, the first power P1, in the heating stage, and to reduce the pressure through the pressure relief device 20 in the pressure reducing stage.

That is to say, when the time that pressure cooker 100 got into the step-down stage is in user sleep time section, pressure cooker 100 did not open pressure relief device 20 in the step-down stage, control pressure cooker 100 through natural cooling mode and carry out the pressure release, and control pressure cooker 100 and get into the step-down stage in advance, thereby prevent that the pressure release sound from influencing user's sleep, and when pressure cooker 100 got into the time of step-down stage and was not in user sleep time section, pressure cooker 100 opened pressure relief device 20 in the step-down stage, carry out quick pressure release through pressure relief device 20 to the pressure in pressure cooker 100, thereby realize uncapping fast.

Specifically, taking the reservation time input by the user as the time for completing the cooking of the pressure cooker, the user may reserve the cooking according to the requirement, and after receiving the reservation time input by the user, the control device 30 may first obtain the waiting time for the pressure cooker 100 to enter the heating stage according to the reservation time, and then adjust the waiting time according to the cooking mode of the pressure cooker 100, so as to reserve sufficient time for the subsequent cooking stages, such as the pressure starting stage, the pressure maintaining stage, and the pressure reducing stage. Wherein, after the user inputs the appointment time and before the pressure cooker enters the heating stage, the pressure cooker is in the waiting stage, and the heating device 10 of the pressure cooker 100 is closed.

More specifically, if it is judged that the time at which the pressure cooker 100 enters the pressure-reducing stage is not in the user sleep time period, the waiting time at which the pressure cooker enters the heating stage is maintained as the scheduled waiting time, i.e., the first preset time t1, and after waiting for the first preset time t1, the control device 30 controls the pressure cooker 100 to enter the next cooking stage, i.e., the pressure-starting stage. If it is determined that the time when the pressure cooker 100 enters the pressure decreasing stage is in the user sleep time period, the control device 30 decreases the waiting time when the pressure cooker enters the heating stage, for example, the fifth preset time is subtracted from the scheduled waiting time, and if the waiting time when the pressure cooker enters the heating stage is decreased to the fourth preset time t4, after waiting for the fourth preset time t4, the control device 30 controls the pressure cooker 100 to enter the next cooking stage, i.e., the pressure starting stage.

It should be noted that, because the time required for completing the pressure reduction when the time for entering the pressure cooker 100 into the pressure reduction stage is not in the user sleep time period is shorter, and the time required for completing the pressure reduction when the time for entering the pressure reduction stage of the pressure cooker 100 is in the user sleep time period is longer, if the reservation times are the same, the waiting time of the waiting stage when the time for entering the pressure reduction stage of the pressure cooker 100 into the user sleep time period is longer than the waiting time of the waiting stage when the time for entering the pressure reduction stage of the pressure cooker 100 into the user sleep time period, that is, the first preset time t1 is longer than the fourth preset time t4, so that the time for entering the pressure cooker 100 into the pressure reduction stage into the user sleep time period and the time for entering the pressure cooker 100 into the pressure reduction stage into the user sleep time period can be guaranteed to complete.

According to an embodiment of the present invention, the pressure relief device 20 may include an exhaust assembly and/or a cooling fan, wherein the exhaust assembly may be disposed on the upper cover of the pressure cooker 100, and the cooling fan may be disposed on the body of the pressure cooker 100.

Specifically, the user can make an appointment according to the requirement, and when the appointed cooking time is reached, the pressure cooker 100 starts to cook and sequentially enters a pressure starting stage, a pressure maintaining stage and a pressure reducing stage. Wherein, in the pressure starting stage, the control device 30 controls the heating device 10 to heat, so as to gradually increase the pressure in the pressure cooker 100; in the pressure maintaining stage, the control device 30 continues to control the heating device 10 to heat, so that the food material in the pressure cooker 100 absorbs enough heat to achieve reasonable cooking effect; in the pressure reduction stage, the control device 30 controls the heating device 10 to stop heating, so as to gradually reduce the pressure in the pressure cooker 100, and selects a pressure reduction mode, such as natural cooling or pressure reduction by the pressure reduction device 20, according to whether the pressure cooker is in the silent mode, and when the pressure Pa in the pressure cooker 100 is lower than the preset pressure threshold Pmin, it is determined that the pressure reduction is completed, and the cooking process is ended.

More specifically, after the pressure cooker 100 starts to cook, the control device 30 first obtains the time when the pressure cooker enters the pressure reduction stage, and determines whether the time when the pressure cooker 100 enters the pressure reduction stage is in the user sleep time period, and if it is determined that the time when the pressure cooker 100 enters the pressure reduction stage is in the user sleep time period, the control device 100 is controlled to execute a control program corresponding to the user sleep time period, that is, after entering the pressure reduction stage, the control device 30 controls the heating device 10 of the pressure cooker 100 to stop heating and controls the pressure relief device 20 (such as an exhaust component) of the pressure cooker 100 to close, at this time, the temperature in the pressure cooker 100 is naturally cooled, the pressure in the pressure cooker 100 is gradually reduced, and no pressure relief sound is emitted, thereby preventing the pressure relief sound from affecting the sleep; if the time that the pressure cooker 100 enters the pressure reduction stage is not in the user sleep time period, the pressure cooker 100 is controlled to execute a control program corresponding to the non-user sleep time period, that is, after the pressure reduction stage is entered, the control device 30 controls the heating device 10 of the pressure cooker 100 to stop heating and controls the pressure relief device 20 (such as an exhaust component) of the pressure cooker 100 to be opened, at this time, the pressure cooker 100 uses the pressure relief device 20 to relieve pressure, the pressure in the pressure cooker 100 is rapidly reduced, and therefore it is ensured that the cover can be opened rapidly after the pressure reduction is completed.

Therefore, the pressure cooker disclosed by the embodiment of the invention can effectively prevent the influence of overlarge sound of the pressure cooker 100 on the sleep of a user in the sleep time period of the user, and can ensure that the pressure cooker 100 is quickly opened in the sleep time period of a non-user, so that the cooking requirements of different environments and different people are met to the maximum extent, and the user experience is improved.

According to an embodiment of the present invention, the control device 30 determines whether the time when the pressure cooker 100 enters the pressure-reducing stage is in the user sleep time period according to the user-inputted reservation time, wherein the control device 30 is configured to determine that the time when the pressure cooker 100 enters the pressure-reducing stage is in the user sleep time period when the user-inputted reservation time is greater than the preset time threshold. If the reservation time input by the user is judged to be less than or equal to the preset time threshold, the time that the pressure cooker 100 enters the pressure reduction stage is judged not to be in the user sleep time period.

Specifically, the user may reserve cooking according to a requirement, for example, by inputting a required reservation time through a key, after obtaining the reservation time input by the user, the control device 30 determines whether the reservation time input by the user is greater than a preset time threshold, for example, 6 hours, if the reservation time input by the user is determined to be greater than 6 hours, it indicates that the user performs the reservation setting in the evening of the previous day, and the pressure cooker 100 starts cooking when the reservation cooking time is reached in the next morning, so that the user may be resting when the pressure cooker 100 enters the pressure reduction stage, and therefore, the control device 30 determines that the time when the pressure cooker 100 enters the pressure reduction stage is in the sleep time period of the user, that is, in the pressure reduction stage, the control device 30 controls the heating device 10 of the pressure cooker 100 to stop heating and controls the pressure relief device 20 of the pressure cooker 100, for example, such, the pressure in the pressure cooker 100 is released in a natural cooling manner, and the pressure in the pressure cooker 100 is gradually reduced without generating a pressure release sound. If the reserved time input by the user is judged to be less than or equal to 6 hours, the control device 30 judges that the time when the pressure cooker 100 enters the pressure reduction stage is not in the sleep time period of the user, namely, the pressure relief device 20 of the pressure cooker 100 is controlled to be opened in the pressure reduction stage, so that the quick pressure relief is realized, and the effect of quickly opening the cover is achieved.

It should be noted that, according to the usage habit of the user, the reservation time in the non-user sleep time period is generally smaller than the preset time threshold, so that when the reservation time input by the user is greater than the preset time threshold, the user can be defaulted to perform reservation setting in the evening of the previous day, and the time when the pressure cooker enters the pressure reduction stage is set to be in the user sleep time period.

According to another embodiment of the present invention, the control device 30 determines whether the time when the pressure cooker 100 enters the pressure-reducing stage is in the user sleep time period according to the local time, wherein the control device 30 is configured to determine that the time when the pressure cooker 100 enters the pressure-reducing stage is in the user sleep time period when the local time when the pressure cooker 100 enters the pressure-reducing stage is in the user sleep time period. If the local time when the pressure cooker 100 enters the pressure-reducing stage is not in the user sleep time period, it is judged that the time when the pressure cooker 100 enters the pressure-reducing stage is not in the user sleep time period.

Specifically, a clock module or a WIFI module may be disposed in the pressure cooker 100 to obtain local time in real time, and obtain local time when the pressure cooker enters the pressure reduction stage, determine whether the time when the pressure cooker 100 enters the pressure reduction stage is in a user sleep time period, if the local time when the pressure cooker 100 enters the pressure reduction stage is in the user sleep time period (for example, 21 o 'clock at night to 8 o' clock at the next day), the control device 30 determines that the time when the pressure cooker 100 enters the pressure reduction stage is in the user sleep time period, that is, after entering the pressure reduction stage, the control device 30 controls the heating device 10 of the pressure cooker 100 to stop heating and controls the pressure relief device 20 of the pressure cooker 100 to close, at this time, the pressure inside the pressure cooker 100 is relieved in a natural cooling manner, and the pressure inside the pressure cooker 100 is gradually reduced without generating pressure. If the local time when the pressure cooker 100 enters the pressure reduction stage is not in the user sleep time period (for example, 21 o 'clock to 8 o' clock next day), the control device 30 determines that the time when the pressure cooker 100 enters the pressure reduction stage is not in the user sleep time period, that is, in the pressure reduction stage, the control device 30 controls the pressure relief device 20 of the pressure cooker 100 to open, so as to implement quick pressure relief, and achieve the effect of quickly opening the cover.

According to an embodiment of the present invention, the local time when the pressure cooker enters the pressure reduction stage can be obtained according to the scheduled time. For example, assuming that the operation time td of the pressure reduction stage when the pressure cooker opens the pressure relief device is 20min, and the operation time t3 of the pressure cooker in the heating stage, such as the pressure rise stage and the pressure maintaining stage, is 30min, the local time when the pressure cooker enters the pressure reduction stage can be obtained according to the scheduled time. For example, when the scheduled cooking is performed, if the local time t0 is night 22 and the time t Δ of the scheduled cooking by the user is 9 hours, the pressure cooker completes cooking after 7 am of the next day, and at this time, the local time when the pressure cooker enters the pressure reduction stage is judged to be 6:10 am, that is, the sleep time period of the user.

According to another embodiment of the present invention, the control device 30 is configured to control the heating device 10 of the pressure cooker 100 to stop heating and control the pressure relief device 20 of the pressure cooker 100 to close during the pressure reduction phase when receiving the opening command input by the user.

Specifically, a key or a switch may be disposed on the operation panel of the pressure cooker 100 to receive the start instruction, if the user needs to have a rest during the cooking process, the start instruction may be input through the key or the switch, for example, the sleep start key is pressed down or the sleep start switch is turned on, the control module controls the heating device 10 of the pressure cooker 100 to stop heating and controls the pressure relief device 20 of the pressure cooker 100 to be turned off in the pressure reduction stage after receiving the start instruction input by the user, at this time, the pressure inside the pressure cooker 100 is relieved in a natural cooling manner, and the pressure inside the pressure cooker 100 is gradually reduced without generating a pressure relief sound.

In addition, in an embodiment of the present invention, the user may further input a cancellation command through a key or a switch, and after receiving the cancellation command, the pressure relief device 20 may be controlled to open in the pressure reduction stage, so as to implement quick pressure relief and quick lid opening.

According to an embodiment of the present invention, as shown in fig. 4, the pressure cooker 100 further comprises a temperature detecting means 101 and a pressure detecting means 102, wherein the pressure detecting means 102 is used for detecting the pressure in the pressure cooker 100 to generate a pressure detecting signal, and the temperature detecting means 101 comprises: an upper cover temperature detection device and a bottom temperature detection device, thetemperature detection device 101 is used for detecting the temperature in the pressure cooker 100 to generate a temperature detection signal. The pressure cooker 100 further comprises a timing unit 301, the timing unit 301 is configured to time the working time of the pressure cooker 100 to generate a time detection signal, the control device 30 is capable of obtaining a current temperature T in the pressure cooker according to the temperature detection signal, obtaining a current working time T according to the time detection signal, and controlling the pressure cooker 100 to sequentially determine whether the time when the pressure cooker 100 enters the pressure reduction stage is in the user sleep time period, the waiting stage, the pressure starting stage, the pressure maintaining stage, and the pressure reduction stage according to the current temperature T and the current working time T.

In the foregoing embodiments, it is determined whether the time when the pressure cooker enters the pressure reduction stage is within the sleep time period of the user, the waiting stage, and the pressure reduction stage, which is not described in detail.

After the waiting period is completed, the control device 30 obtains the temperature detection signal and the time detection signal in the pressure cooker 100 in real time, and controls the pressure cooker 100 to sequentially perform the pressure-raising period, the pressure-maintaining period, and the pressure-lowering period according to the temperature detection signal and the time detection signal.

It should be noted that, for the time when the pressure cooker enters the pressure reduction stage and the time when the pressure cooker enters the pressure reduction stage are not in the user sleep time period, the control modes of the pressure starting stage and the pressure maintaining stage are basically the same, and the control modes of the waiting stage and the pressure reduction stage are different.

Specifically, after the pressure cooker 100 enters the pressure starting stage, the control device 30 controls the heating device 10 to heat with the first power P1, so that the pressure in the pressure cooker 100 is rapidly increased, and the rapid pressure starting is completed, the control device 30 obtains the current temperature T and the current working time T in real time, and determines whether the current temperature T is greater than a first preset temperature threshold T1, if the current temperature T is greater than the first preset temperature threshold T1, the control device 30 controls the pressure cooker 100 to enter the pressure maintaining stage; if the current temperature T is less than or equal to the first preset temperature threshold T1, the control device 30 further determines whether the current working time T is greater than a second preset time T2. If the current working time t is less than or equal to the second preset time t2, the control device 30 controls the heating device 10 to continue heating at the first power P1; if the current working time t is greater than the second preset time t2, the control device 30 controls the pressure cooker 100 to enter the pressure maintaining stage.

After entering the pressure maintaining stage, it is determined whether the current working time T is greater than a third preset time T3, and if the current working time T is less than or equal to the third preset time T3, the control device 30 controls the heating device 10 to heat with a second power P2, and further determines whether the current temperature T is greater than a second preset temperature threshold T2. If the current temperature T is greater than the second preset temperature threshold T2, the control device 30 controls the heating device 10 to perform heating at a third power P3 or stop heating, wherein the third power P3 is less than the second power P2; if the current temperature T is less than or equal to the second preset temperature threshold T2, the control device 30 controls the heating device 10 to continue heating at the second power P2; if the current working time t is judged to be greater than the third preset time t3, the control device 30 controls the pressure cooker 100 to enter the pressure reduction stage.

In this way, it can be ensured that the food material in the pressure cooker 100 absorbs enough heat to achieve a reasonable cooking effect.

It should be noted that the second predetermined temperature threshold T2 may correspond to the pressure in the pressure cooker 100 during the pressure maintaining period, i.e. the temperature in the pressure cooker is determined by the temperature in the pressure cooker.

According to an embodiment of the present invention, as shown in fig. 5, the pressure cooker 100 further includes: the sound device 40, the sound device 40 is connected with the control device 30, and the control device 30 is used for controlling the sound device 40 to stop working when the time when the pressure cooker 100 enters the pressure reduction stage is in the sleep time period of the user.

Specifically, if it is determined that the time when the pressure cooker 100 enters the depressurization phase is not in the user sleep time period, the sound device 40 (e.g., buzzer) of the pressure cooker 100 sends a prompt message to prompt the start of cooking or the completion of cooking when the pressure cooker 100 is cooking; if the time that the pressure cooker 100 enters the pressure reduction stage is judged to be in the sleep time period of the user, the sound device 40 (such as a buzzer) of the pressure cooker 100 is controlled to stop working, namely, the prompt message is sent out, so that the influence of the prompt message sent out by the sound device 40 (such as the buzzer) on the sleep of the user can be avoided.

In summary, according to the pressure cooker provided by the embodiment of the invention, the control device is used for judging whether the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user, and when the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user, the control device controls the pressure cooker to reduce the pressure in the natural cooling mode in the pressure reduction stage, so that the influence of the excessive sound of the pressure cooker on the sleep of the user can be effectively prevented in the sleep time period of the user, the pressure cooker can be guaranteed to finish cooking in the reserved time, the cooking effect is guaranteed, the cooking requirements of different environments and different people groups are met to the maximum, and the user experience is improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (12)

1. A method of controlling a pressure cooker, comprising the steps of:

when the pressure cooker starts to cook, acquiring the time for the pressure cooker to enter a pressure reduction stage;

judging whether the time when the pressure cooker enters the pressure reduction stage is in a user sleep time period or not;

and if the time that the pressure cooker enters the pressure reduction stage is judged to be in the sleep time period of the user, the pressure cooker is controlled to enter the pressure reduction stage in advance by reducing the reserved waiting time that the pressure cooker waits for entering the heating stage and/or improving the preset heating power of the heating stage, and the pressure cooker is controlled to reduce the pressure in a natural cooling mode in the pressure reduction stage.

2. The method for controlling a pressure cooker as claimed in claim 1, wherein if it is determined that the time when the pressure cooker enters the pressure reduction stage is not in the sleep time period of the user, the pressure cooker is controlled to enter the heating stage after waiting for the predetermined waiting time, the pressure cooker is controlled to be heated at the preset heating power in the heating stage, and the pressure is reduced by the pressure relief device in the pressure reduction stage.

3. The method for controlling a pressure cooker as claimed in claim 1, wherein it is determined whether the time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period or not, based on a user-inputted reservation time,

and if the reservation time input by the user is greater than a preset time threshold, judging that the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user.

4. The method as claimed in claim 1, further comprising determining whether the time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period according to a local time, wherein,

and if the local time when the pressure cooker enters the pressure reduction stage is in the user sleep time period, judging that the time when the pressure cooker enters the pressure reduction stage is in the user sleep time period.

5. The method for controlling a pressure cooker as claimed in claim 1, further comprising:

and if an opening instruction input by a user is received, controlling the heating device of the pressure cooker to stop heating and controlling the pressure relief device of the pressure cooker to close in the pressure reduction stage.

6. The control method of the pressure cooker according to any one of claims 1 to 5, further comprising: and if the time that the pressure cooker enters the pressure reduction stage is judged to be in the sleep time period of the user, controlling the sound device of the pressure cooker to stop working.

7. A pressure cooker, comprising:

a heating device;

a pressure relief device;

the control device is used for acquiring the time when the pressure cooker starts to cook, judging whether the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of a user, controlling the pressure cooker to enter the pressure reduction stage in advance by reducing the reserved waiting time when the pressure cooker waits for entering the heating stage and/or improving the preset heating power of the heating stage when the time when the pressure cooker enters the pressure reduction stage is in the sleep time period of the user, and controlling the pressure cooker to reduce the pressure in a natural cooling mode in the pressure reduction stage.

8. The pressure cooker according to claim 7, wherein the control device is configured to control the pressure cooker to enter the heating stage after waiting for the predetermined waiting time when the time period for the pressure cooker to enter the pressure reducing stage is not within the sleep time period of the user, control the pressure cooker to be heated at the preset heating power in the heating stage, and reduce the pressure in the pressure reducing stage through the pressure relief device.

9. The pressure cooker according to claim 7, wherein the control device determines whether the time for entering the pressure-reducing stage is in the user sleep time period according to a user-inputted reservation time, and wherein the control device is configured to determine that the time for entering the pressure-reducing stage is in the user sleep time period when the user-inputted reservation time is greater than a preset time threshold.

10. The pressure cooker of claim 7, wherein the control device determines whether the time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period according to a local time, and wherein the control device is configured to determine that the time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period when the local time when the pressure cooker enters the pressure-reducing stage is in the user sleep time period.

11. The pressure cooker according to claim 7, wherein the control device is configured to control the heating device of the pressure cooker to stop heating and control the pressure relief device of the pressure cooker to close in the pressure reduction stage when receiving an opening command input by a user.

12. The pressure cooker of any of claims 7-11, further comprising:

the sound device is connected with the control device, and the control device is used for controlling the sound device to stop working when the pressure cooker enters the pressure reduction stage and the user sleeps for a period of time.

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