Summary of the invention
The main object of the present invention is to propose a kind of pot cover, electric pressure cooking saucepan and anti-overflow controlling means, it is intended to improve voltageThe sensitivity of power pot sensing pot inner pressure reaches anti-overflow effect to adjust heating schedule in time.
To achieve the above object, the present invention proposes a kind of pot cover, is used for electric pressure cooking saucepan；Include:
Lid, the lid is interior to be equipped with the cavity being in communication with the outside；
The exhaust plug being installed in the lid, the exhaust plug is interior to be equipped with along its axially extending exhaust passage,The both ends of the exhaust passage extend to the both ends of the exhaust plug, described in being formed and be located in the upper end of the exhaust plugThe intracorporal gas vent of chamber；And the air inlet for being connected to electric pressure cooking saucepan pot body is formed in the lower end of the exhaust plug；
It is sheathed on the exhaust valve of the exhaust plug upper end, the exhaust valve can move along the vertical direction, to openOr close the gas vent；
The hot gas sensing device being electrically connected with electrical pressure cooker control circuit plate, the hot gas sensing device are set to the cavityIt is interior, believe for sensing the hot gas being discharged from the gas vent, and when sensing hot gas to the control circuit board output overvoltageNumber, so that the control circuit board adjusts heating schedule.
Preferably, the hot gas sensing device is set to the top of the gas vent.
Preferably, the hot gas sensing device is set to the side wall or roof of the cavity.
Preferably, the hot gas sensing device includes induction part and trigger unit corresponding with the induction part, the touchingHair portion is when the induction part senses the hot gas of the gas vent discharge to the circuit control panel output overvoltage signal.
Preferably, the trigger unit includes the touch switch being electrically connected with the control circuit board, and the induction part includesBimetal leaf corresponding with the touch switch, the bimetal leaf is when sensing the hot gas of the gas vent discharge to the touchingDynamic switch Direction distortion simultaneously touches the touch switch with to the control circuit board output overvoltage signal.
The present invention also proposes a kind of electric pressure cooking saucepan, including pot body, above-mentioned pot cover and control circuit board, and the pot cover lid is setIt is equipped in the pot body, and in the pot body by the heater of control circuit board control heating；
When the hot gas sensing device of the pot cover senses hot gas, to the control circuit board output overvoltage signal, so thatThe control circuit board adjusts heating schedule.
The present invention also proposes a kind of anti-overflow controlling means, and for the electric pressure cooking saucepan, the anti-overflow controlling means includeFollowing steps:
The heater of control electric pressure cooking saucepan is heated with preset Power Regulation ratio；
When detecting the over-voltage signal that the hot gas sensing device of the electric pressure cooking saucepan exports, controls the heater and reducePower Regulation ratio is heated.
Preferably, when detecting the over-voltage signal that the hot gas sensing device of the electric pressure cooking saucepan exports, control is described to be addedHot device stops heating.
Preferably, the over-voltage signal includes the first signal and the second signal；
The hot gas sensing device of the electric pressure cooking saucepan, in the first pre-set interval, is exported according to the hot gas intensity value sensedFirst signal, the hot gas intensity value sensed export second signal in the second pre-set interval；Wherein, second preset areasBetween hot gas intensity value be greater than first pre-set interval hot gas intensity value；
It is described when detect the electric pressure cooking saucepan hot gas sensing device export over-voltage signal when, control the heaterReducing the step of Power Regulation ratio is heated includes:
When detecting the first signal that the hot gas sensing device of the electric pressure cooking saucepan exports, the heater is controlled with theOne Power Regulation ratio is heated；
When detecting the second signal that the hot gas sensing device of the electric pressure cooking saucepan exports, the heater is controlled with theTwo Power Regulation ratios are heated；
Wherein, the first Power Regulation ratio is greater than the second Power Regulation ratio.
Preferably, described when detecting the over-voltage signal of induction hot gas sensing device output of the electric pressure cooking saucepan, controlIt makes after the heater reduces the step of Power Regulation ratio is heated further include:
When the over-voltage signal of induction hot gas sensing device output of the electric pressure cooking saucepan is not detected, the heating is controlledDevice is heated with the default Power Regulation ratio.
The present invention by the way that the hot gas sensing device that is electrically connected with control circuit board is arranged in the cavity being connected to gas vent,The micro hot gas being discharged from gas vent can be sensed in time, and then over-voltage signal is exported to the control circuit board, so thatThe control circuit board can adjust heating schedule in time, the pressure in pot be reduced, to achieve the effect that anti-overflow.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.BaseEmbodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all itsHis embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present inventionDescription be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skillThe quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spySign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energyIt is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solutionConjunction is not present, also not the present invention claims protection scope within.
The embodiment of the present invention proposes a kind of pot cover, is used for electric pressure cooking saucepan；It may naturally be used for electric cooker.Please refer to Fig. 1And Fig. 2, the pot cover include lid 100, the exhaust plug 200 being installed in the lid 100, are sheathed on the exhaust plugThe exhaust valve 300 of 200 upper ends and the hot gas sensing device 400 being electrically connected with electrical pressure cooker control circuit plate 500.The lidThe cavity 110 being in communication with the outside is equipped in body 100；It is equipped in the exhaust plug 200 along its axially extending exhaust passage, instituteThe both ends for stating exhaust passage extend to the both ends of the exhaust plug 200, are located at being formed in the upper end of the exhaust plug 200Gas vent in the cavity 110；And it is formed in the lower end of the exhaust plug 200 for being connected to electric pressure cooking saucepan pot body 600Air inlet；The exhaust valve 300 can be moved along the vertical direction to turn on or off the gas vent.The hot gas induction dressIt sets 400 to be set in the cavity 110, for sensing the hot gas being discharged from the gas vent, and when sensing hot gas to described500 output overvoltage signal of control circuit board prevents the food in pot from overflowing so that the control circuit board 500 adjusts heating scheduleOut.
The embodiment of the present invention also proposes a kind of electric pressure cooking saucepan, and the electric pressure cooking saucepan includes pot body 600, the pot cover, andControl circuit board 500, the pot cover are covered in the pot body 600, and are equipped in the pot body 600 by the control circuit boardThe heater of 500 control heating.When the hot gas sensing device 400 of the pot cover senses hot gas, to the control circuit board 500Output overvoltage signal, so that the control circuit board 500 adjusts heating schedule, to prevent the food in pot from overflowing.
In the present embodiment, the control circuit board 500 is set in the pot cover.It is understood that other realIt applies in example, the control circuit board 500 can also be set in the pot body 600.
The interior pot 700 for holding food is equipped in the pot body 600, which can be an independent component,It is also possible to a part of the pot body 600, is not specifically limited herein.It is equipped with heater in the pot body 600, for heatingInterior pot 700, the heater can be located at the bottom and/or side of the pot body 600, be not specifically limited herein.The potIt is covered on the pot body 600, can be hinged in the pot body 600, or be detachably connected.
It will be appreciated by persons skilled in the art that when the pressure in the pot body 600 is greater than the set value, such as70kpa, the exhaust valve 300 open the gas vent of the exhaust plug 200, keep the hot gas in pot logical from the exhaustRoad, cavity 110 are expelled to outside electric pressure cooking saucepan.
Specifically, electric pressure cooking saucepan is during the cooking process, hot gas, the pressure in pot can be generated under the action of heater, in potPower is increased with increasing for hot gas, and after pressure reaches certain value, hot gas will wash exhaust valve 300 open from exhaust plugThe gas vent of 200 upper ends is expelled to the cavity 110, and then is expelled to outside electric pressure cooking saucepan from the cavity 110.And by instituteIt states and is equipped with the hot gas sensing device 400 in cavity 110, therefore working as has hot gas to be discharged from the gas vent of 200 upper end of exhaust plugWhen, even if only slight exhaust, can also be sensed, hot gas sensing device 400 senses hot gas by the hot gas sensing device 400Afterwards, one over-voltage signal of output after the control circuit board 500 receives the over-voltage signal, leads to the control circuit board 500Adjustment heating schedule is crossed, achievees the purpose that prevent food in pot body 600 from overflowing.
In order to allow the hot gas sensing device 400 that can sense hot gas in time, the hot gas sensing device 400 is set to instituteState the top of gas vent.It after hot gas sheds from the gas vent, can spread upward, thus be set to the heat above the gas ventGas sensing device 400 can sense at the first time the hot gas being discharged from the gas vent.
The embodiment of the present invention is electrically connected by being arranged in the cavity 110 being connected to the gas vent with control circuit board 500The hot gas sensing device 400 connect, can sense in time from gas vent be discharged micro hot gas, and then by over-voltage signal export toThe control circuit board 500 enables the control circuit board 500 to adjust heating schedule in time, reduces the pressure in pot, fromAnd achieve the effect that anti-overflow.
Further, for the ease of dismounting, and avoid influencing other components of pot cover, the hot gas sensing device 400 is setIn the side wall or roof of the cavity 110.
Specifically, the side wall of the cavity 110 or roof are equipped with the mounting groove for the hot gas sensing device 400 installation,The hot gas sensing device 400 is installed in the mounting groove.It is equipped between the hot gas sensing device 400 and the mounting grooveSealing element, to prevent the hot gas in the cavity 110 from passing through the gap between the hot gas sensing device 400 and the mounting grooveDiffusion, causes the damage and aging of other component in pot cover.
The hot gas sensing device 400 includes induction part and trigger unit corresponding with the induction part, the trigger unitWhen the induction part senses the hot gas of the gas vent discharge to the 500 output overvoltage signal of control circuit board.Specifically, the induction part can be electrically connected with the trigger unit, be also possible to connect (example on other occasions with the trigger unitSuch as the temperature sensing device of 420 structure of bimetal leaf).In the present embodiment, the sensing part is in the cavity 110, described in distanceGas vent is closer, and can sense hot gas faster, the trigger unit is located at side of the induction part far from the gas vent,To prevent the hot gas of discharge from the electrical component of trigger unit being caused to damage.
The structure of the hot gas sensing device 400 can there are many, in the present embodiment, the trigger unit include with it is describedThe touch switch 410 that control circuit board 500 is electrically connected, the induction part includes bimetal leaf corresponding with the touch switch 410420, the bimetal leaf 420 when sensing the hot gas of gas vent discharge to 410 Direction distortion of touch switch simultaneouslyThe touch switch 410 is touched with to the 500 output overvoltage signal of control circuit board.Specifically, when gas vent is slightly arrangedWhen gas, since hot air temperature is higher, to reach the deformation temperature of bimetal leaf 420 and make bimetal leaf 420 to touch switch410 direction generates deformation, and the bimetal leaf 420 of deformation touches the touch switch 410, so that the touch switch 410 is defeatedAn over-voltage signal gives the control circuit board 500 out.The hot gas sensing device being made of bimetal leaf 420 and touch switch 410400, structural behaviour is stablized, and low in cost, advantageously reduces production cost.Preferably, the touch switch 410 is located at describedSide of the bimetal leaf 420 far from the gas vent, and the outside of the cavity 110 is extended to, to prevent the shadow by hot gasIt rings.
The exhaust valve 300 is equipped with valve cone 310, to block or open the gas vent.The lid 100 is also set upThere is mounting base 120, the mounting base 120 is equipped with the slot position 121 being open upwards, and the lower part quartile of the exhaust valve 300 is in instituteIt states in the slot position 121 of mounting base 120, and is equipped with the through-hole passed through for the exhaust plug 200 in the mounting base 120, it is describedExhaust plug 200 passes through the through-hole and is fixed in the mounting base 120, and the mounting base 120 constitutes the cavity 110Section bottom.
The embodiment of the present invention also proposes a kind of anti-overflow controlling means for above-mentioned electric pressure cooking saucepan, referring to figure 3., the electricityPressure cooker during the cooking process, when the hot gas pressure in the pot body 600 is greater than certain value, such as 70kpa, the hot gas in potThe exhaust valve 300 can be washed open and be discharged from the gas vent of exhaust plug 200, the hot gas sensing device of the electric pressure cooking saucepan400 sense from gas vent be discharged hot gas when, output overvoltage signal is controlled by the control circuit board 500 of the electric pressure cooking saucepanHeater adjusts heating schedule, to realize anti-overflow purpose；Specifically, the anti-overflow controlling means the following steps are included:
Step S10 is controlled the heater of the electric pressure cooking saucepan and is heated with preset Power Regulation ratio；
It should be noted that the Power Regulation ratio referred within a heating cycle, shared by heater heating timeRatio.It is to be expressed to be if Power Regulation ratio is 18/32, using 32 seconds as one heating cycle, wherein 18 seconds laser heatings, separatelyIt does not heat within outer 14 seconds.
When hot gas pressure in the pot body 600 is not up to the threshold value for acting exhaust valve 300, the heater is pressedIt is cooked according to preset heating schedule.Preset heating schedule described herein can be according to the selected function program of userAnd generate, it is also possible to the heating schedule of system default, is not specifically limited herein.Wherein the preset heating schedule byA kind of Power Regulation ratio is realized by a variety of Power Regulations than successively executing according to specific heating sequence.It is preset described in this stepPower Regulation ratio, refer to the Power Regulation ratio under preset heating schedule.
Step S20 controls institute when detecting the over-voltage signal that the hot gas sensing device 400 of the electric pressure cooking saucepan exportsHeater reduction Power Regulation ratio is stated to be heated.
Specifically, food in pot is heated without stopping pregnancy heat gas, pot with heater according to preset Power Regulation ratioInterior pressure also increases, and when the pressure in pot reaches certain value, the Hot-air blowing device air valve body 300 that begins to rehearse is expelled to the cavity110, and then be expelled to outside electric pressure cooking saucepan from the cavity 110, when hot gas is expelled to cavity 110 from gas vent, cavity 110Interior hot gas sensing device 400 senses hot gas and to 500 output overvoltage signal of the control circuit board of electric pressure cooking saucepan, by control electricityRoad plate 500 controls the heater reduction Power Regulation ratio according to the over-voltage signal received and is heated, i.e., identical heating cycleInterior, the heating time of heater shortens, and the time that do not heat extends, and to reach reduction pot inner pressure, prevents the effect of food spillingFruit.
In one of the embodiments, when detecting the over-voltage signal that the hot gas sensing device 400 exports, institute is controlledIt states heater and stops heating.It is understood that the heater stops heating, that is, represents Power Regulation ratio and be reduced to 0, it so can be mostReduce to big degree the pressure in pot.
The embodiment of the present invention is when detecting the over-voltage signal that the hot gas sensing device 400 exports, by described in controlHeater reduces Power Regulation ratio to reduce the quantity of heat given up into pot, to reduce pot inner pressure in time, realizes anti-overflow effect.
Further, in order to more precisely and rapidly according to the overpressure situation in pot, match different Power Regulation ratios in time, withRealization control effectively to the overpressure situation in pot, and the over-voltage signal includes the first signal and the second signal, the voltageThe hot gas sensing device 400 of power pot, in the first pre-set interval, exports the first signal, sensing according to the hot gas intensity value sensedThe hot gas intensity value arrived exports second signal in the second pre-set interval；Wherein, the hot gas intensity value of second pre-set intervalGreater than the hot gas intensity value of first pre-set interval.The step S20 includes:
When detecting the first signal that the induction hot gas sensing device 400 of the electric pressure cooking saucepan exports, control is described to be addedHot device is heated with the first Power Regulation ratio；
When detecting the second signal that the induction hot gas sensing device 400 of the electric pressure cooking saucepan exports, control is described to be addedHot device is heated with the second Power Regulation ratio；
Wherein, the first Power Regulation ratio is greater than the second Power Regulation ratio.
The hot gas intensity value of second pre-set interval is greater than the hot gas intensity value of first pre-set interval, that is, works as inductionWhen the hot gas intensity value that hot gas sensing device 400 senses is in the second pre-set interval, the hot barometric pressure force value in pot is larger, at this timeHeater is needed to reduce heat output with biggish amplitude, quickly to reduce the pressure in pot, therefore heater is than firstPower Regulation is heated than smaller second Power Regulation ratio.Conversely, the heat that the hot gas sensing device 400 for working as the electric pressure cooking saucepan sensesWhen gas value is in the first pre-set interval, the pressure value in pot is less beyond preset value at this time, it is only necessary to subtract to heater small amountFew heat output, i.e., heater is heated with the first Power Regulation ratio, so that it may timely and effectively be reduced the pressure in pot, be realized anti-overflowEffect.
It is understood that in other embodiments, the hot gas sensing device 400 can be strong according to different hot gasAngle value section is correspondingly provided with the signal more than two kinds；The signal for being more than two kinds corresponding simultaneously, is matched with different Power Regulation ratiosOutput.
Further, described when the over-voltage signal for detecting that the hot gas sensing device 400 of the electric pressure cooking saucepan exportsWhen, it controls after the heater reduces the step of Power Regulation ratio is heated further include:
S30, when the over-voltage signal that the hot gas sensing device 400 that the electric pressure cooking saucepan is not detected exports, described in controlHeater is heated according to preset Power Regulation ratio.
Specifically, after reducing the pressure in electric pressure cooking saucepan by way of reducing Power Regulation ratio, if the exhaust valveBody 300 closes the gas vent of the exhaust plug 200 again, and there is no hot gas at this time is expelled to the cavity 110 from gas vent,Hot gas sensing device 400 has not sensed hot gas without output overvoltage signal, and control circuit board 500 controls heater according to defaultPower Regulation ratio heated, thus the case where avoiding the occurrence of in pot the food cooking time and extending.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at thisUnder the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectlyIt is included in other related technical areas in scope of patent protection of the invention.