Utility model content
The main purpose of the utility model is to provide a kind of temperature measuring equipment, it is intended to improves the standard to cooking apparatus temperature detectionTrue property, prevents dry combustion method.
To achieve the above object, the utility model proposes temperature measuring equipment be used for cooking apparatus, including mounting portion, first surveyWarm module and first communication module, the mounting portion with the cookware side wall being placed on the cooking apparatus detachably installing；First temperature measurement module is fixedly connected with the mounting portion, for detecting in the cookware away from the first preset height of bottom wall positionNearly bottom temperature；The first communication module is electrically connected with first temperature measurement module, for by the nearly bottom temperature send toThe cooking apparatus.
Preferably, the hanging part or clamping piece that the mounting portion is, the mounting portion is hanging part or clamping piece, to hangIt is connected to or is held on the upper edge of the cookware side wall.
Preferably, the first communication module is wireless communication module.
Preferably, the first communication module is any of bluetooth module, radio-frequency module, wifi module.
Preferably, first temperature measurement module is thermoprobe, and the thermoprobe is extended in upward and downward, upper end withThe mounting portion connection, the thermoprobe include acicular shell and some thermistors being packaged in the shell, oftenThe two poles of the earth of one thermistor are respectively connected with temperature sensor line, and the temperature sensor line stretches out the shell and communicates with described firstModule connects, and some thermistors include first heat in the cookware and away from preset height described in bottom wallQuick resistance.
Preferably, the preset height is 2mm~5mm.
Preferably, the needle point of the thermoprobe and the bottom wall of the cookware touch.
Preferably, the thermistor is equipped with multiple, and multiple thermistors are vertically to being intervally arranged, and multiple institutesIt is first thermistor to state in thermistor positioned at the lowermost thermistor.
The utility model also proposes a kind of temp measuring system, which includes cooking apparatus and temperature measuring equipment；It is described to cookUtensil of preparing food includes heating unit and control module, and the heating unit is electrically connected with the control module, and the heating unitOn be placed with cookware；The temperature measuring equipment includes mounting portion, the first temperature measurement module and first communication module, the mounting portion toDetachably installed with the cookware side wall being placed on the cooking apparatus；First temperature measurement module is fixed with the mounting portion to be connectedConnect, for detecting the nearly bottom temperature away from the first preset height of bottom wall position in the cookware；The first communication module with it is describedFirst temperature measurement module is electrically connected, for sending the nearly bottom temperature to the control module of the cooking apparatus.
Preferably, the cooking apparatus further includes the second temperature measurement module, and second temperature measurement module is located at the cookwareThe lower section of bottom wall, for detecting the bottom wall temperature of the cookware.
Preferably, the cooking apparatus further includes alarm set, and the alarm set is electrically connected with the control module.
A survey that can be detachably connected with cookware side wall is provided with the technical solution of the utility model, on cooking apparatusWarm device, since the temperature measuring equipment includes the first temperature measurement module and first communication module, and the first temperature measurement module can be directly accurateDetection cookware in away from bottom wall closer location at, i.e., the nearly bottom temperature at preset height, so, when the liquid in cookware did not had thisDuring position, what the first temperature measurement module detected is the temperature of liquid at this, if the liquid in cookware is less than the position, the first thermometricWhat module detected is the temperature of air at this, in other words, when the liquid level of liquid in cookware is just below the position, the first thermometricModule will be changed into testing the temperature of liquid level upper air from the temperature of test liquid, i.e., it is steep to produce temperature within a short period of timeThe phenomenon of drop, and these temperature can be sent to the control module of cooking apparatus by first communication module, due at this time in cookwareThe liquid amount of remaining it is seldom, i.e., cookware is in the state of dry combustion method of closing on, so control module just can determine that dry combustion method will occur for cookware,And then control heating unit to close in time, in this manner it is possible to cookware there is a situation where dry combustion method progress antedating response, so that effectivelyPrevent the generation of dry combustion method phenomenon.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried outClearly and completely describing, it is clear that described embodiment is only the part of the embodiment of the utility model, rather than allEmbodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premiseLower all other embodiments obtained, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,Afterwards ...), then directionality instruction be only used for explain it is opposite between each component under a certain particular pose (as shown in drawings)Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodimentTwo " etc. description is only used for description purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaningThe quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least oneA this feature.In addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skillPersonnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical solution is conflicting or can not realizeThe combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of temperature measuring equipment and with the temperature measuring equipment temp measuring system.Wherein, temperature measuring equipmentFor cooking apparatus, which can be, but not limited to as electromagnetic oven, electric cooker, electric food warmer etc..
Referring to figs. 1 to Fig. 3, and Fig. 5, in one embodiment of the utility model, which is specially an electromagnetic oven1, herein below illustrates by taking electromagnetic oven 1 as an example.The temp measuring system of the electromagnetic oven 1 includes electromagnetic oven 1 and temperature measuring equipment 2, wherein,Electromagnetic oven 1 includes heating unit 11 and control module 12, and heating unit 11 is electrically connected with control module 12, and on heating unit 11It is placed with cookware 3.And temperature measuring equipment 2 then includes mounting portion 21, the first temperature measurement module 22 and first communication module 23, installationPortion 21 with the side wall for the cookware 3 being placed on electromagnetic oven 1 detachably installing；Meanwhile first temperature measurement module 22 and mounting portion21 are fixedly connected, for detecting the nearly bottom temperature away from bottom wall preset height position in cookware 3, and the temperature-sensitive of the first temperature measurement module 22Point is in be set close to 3 bottom wall of cookware, in addition, first communication module 23 is electrically connected with the first temperature measurement module 22, for first to be surveyedThe nearly bottom temperature that warm module 22 detects is sent to the control module 12 of electromagnetic oven 1.
It should be noted that, electromagnetic oven 1 is that it heats dress using electric cooking apparatus made of electromagnetic inductive heating principle hereinPut 11 and generally include the components such as high-frequency induction heating coil (not shown), at the interval of the bottom wall and load coil of cookware 3There is the panel 111 of electromagnetic oven 1.In use, heating coil is passed through alternating current, an alternating magnetic field is just produced around its coil, shouldMost of cookware 3 made of ferromagnetic material by being positioned on panel 111 of alternating magnetic field, produce big in the bottom wall of cookware 3Amount vortex, so as to produce the heat needed for culinary art, i.e. electromagnetic oven 1 heats cookware 3.And in the heating process of cookware 3,The liquid level of liquid (can also be food that liquid consolidates mixed state etc.) can constantly be reduced with continuing for heating process in cookware 3,When liquid is all evaporated and electromagnetic oven 1 is still continuing heating, dry combustion method occurs for cookware 3.
Compared to the scheme that temperature measuring equipment is arranged on to the lower section of 1 panel of electromagnetic oven 111 common at present, the thermometric dress of the programPutting because of the barrier of panel 111, causes the test to 3 temperature of cookware inaccurate and lags, so that can not effective anti-dry；And at thisIn embodiment, by setting a temperature measuring equipment 2 that can be detachably connected with 3 side wall of cookware, since the temperature measuring equipment 2 includes theOne temperature measurement module 22 and first communication module 23, and the temperature-sensitive point of the first temperature measurement module 22 is in be set close to 3 bottom wall of cookware, therefore theOne temperature measurement module 22 can directly and accurately detect the nearly bottom away from (i.e. preset height position) at bottom wall closer location in cookware 3Temperature, when the liquid in cookware 3 did not had the position, what the first temperature measurement module 22 detected is the temperature of liquid at this, if cookware 3When interior liquid is less than the position, what the first temperature measurement module 22 detected is the temperature of air at this, in other words, when liquid in cookware 3When the plane of material is just below the position, the first temperature measurement module 22 will be changed into testing liquid level body from the temperature of test liquidThe temperature of upper air, i.e., can produce the phenomenon of temperature steep drop within a short period of time, and these temperature can pass through the first communication mouldBlock 23 is sent to the control module 12 of electromagnetic oven 1, and since the liquid amount of remaining at this time in cookware 3 is seldom, i.e., cookware 3 is dry in closing onThe state of burning, so control module 12 just can determine that dry combustion method will occur for cookware 3, and then controls heating unit 11 to close in time,In this manner it is possible to cookware there is a situation where dry combustion method progress antedating response, so as to effectively prevent the generation of dry combustion method phenomenon, the opposing partyFace, since the first temperature measurement module 22 can directly and accurately detect the temperature of the material such as liquid in cookware 3, therefore in the present embodiment,The temperature that electromagnetic oven 1 can also be sent according to the first temperature measurement module 22, with reference to the characteristics of different liquids or food, adjusts electromagnetic oven1 power, to carry out accurate thermostatic control to electromagnetic oven 1.
To further improve the accuracy of temperature detection, prevent because situations such as liquid fluctuating in cookware 3 or bubble parcel makesInto erroneous judgement, in the present embodiment, which further includes second temperature measurement module 13.Second temperature measurement module 13 is arranged onThe lower section of the lower surface, the i.e. bottom wall of cookware 3 of the panel 111 of electromagnetic oven 1, for the temperature of 3 bottom wall of indirect detection cookware, whenSo, in other embodiment, the second temperature measurement module 13 also can directly detect the temperature of 3 bottom wall of cookware.When the liquid in cookware 3 is depositedAmount is seldom, i.e., when cookware 3 closes on dry combustion method, at this time, the temperature of 3 bottom wall of cookware will steeply rise in a short time, electromagnetic oven 1The letter of temperature steep drop that is sent according to the information of 3 bottom wall steep temperature excursion of cookware and the first temperature measurement module 22 of control module 12Breath, you can more accurately and reliably judge that dry combustion method will occur for cookware 3, so as to close heating unit 11 in time, protect 1 He of electromagnetic ovenCookware 3.
In addition, to make user obtain more preferable usage experience, further, which further includes alarm set 16, shouldAlarm set 16, which may be disposed in the housing of electromagnetic oven 1, may also set up in its surface of shell, wherein, the alarm set 16 can with butThe one or more being not limited in voice prompting device, vibrating prompt, light prompt device and screen prompt device etc., wherein, soundSound prompting device can be buzzer, or can send speech player of voice prompt etc..Alarm set 16 and control mouldBlock 12 is electrically connected, and when the liquid level of liquid in cookware 3 is less than preset height position, related prompting will be sent, in this way, user is justThe situation of electromagnetic oven 1 and cookware 3 can be checked by the prompting, and then avoid cookware 3 that the dangerous situations such as dry combustion method occur.
In the present embodiment, as shown in Figure 1, mounting portion 21 is preferably hanging part, specifically, the hanging part is detachable for oneFormula is mounted on the hook of the upper edge of 3 side wall of cookware.Right the design not limited to this, in other embodiment, mounting portion 21 may be used alsoThinking clamping piece (such as clip of the detachable upper edge for being mounted on 3 side wall of cookware) or shackle member etc., other can be with cookwareThe structure of 3 side wall detachable connections.In this way, user can be according to the actual demand of oneself, when needing to use temperature measuring equipment 2When, it is possible to it is very convenient that temperature measuring equipment 2 is installed on 3 side wall of cookware, and when use finish or be not required in use,Easily temperature measuring equipment 2 can be lifted down from cookware 3, so as to improve independence and just of the user using temperature measuring equipment 2Profit.
Preferably, in the present embodiment, first communication module 23 is wireless blue tooth communication module, this is because wireless blue tooth leads toBelieve the usual small volume of module, certainly, first communication module 23 can also be infrared module, radio-frequency module, wifi module etc.Any of other wireless communication modules.Certainly, in other embodiments, first communication module 23 can also be wire communicationModule.But compared to wired communication mode, the temperature that the first temperature measurement module 22 measures preferably is passed through into wireless parties in the present embodimentFormula is sent to the control module 12 (control module 12 should include a signal receiver) of electromagnetic oven 1, so that cookware 3 and electromagnetismIt is not required conducting wire to communicate between stove 1, improves the ease of use and practicality of cookware 3 and electromagnetic oven 1.
With reference to Fig. 2 and Fig. 3, in the present embodiment, the first temperature measurement module 22 is specially a thermoprobe, and certainly, first surveysWarm module 22 can also be other temperature test devices such as melting point bar or tempilstick.The thermoprobe is extended in upward and downward,Upper end is connected with mounting portion 21, and first communication module 23 is preferably placed at the top of thermoprobe, to avoid liquid in cookware 3 etc.Influence to communication module.Specifically, thermoprobe includes acicular shell 22a and some temperature-sensitives being packaged in shell 22aResistance, in addition, Heat Conduction Material 22f (such as, but not limited to magnesia etc.) is also filled with shell 22a, to increase thermoprobeHeat conductivity, make temperature survey more accurate.Position of these thermistors where in thermoprobe is thermoprobeTemperature-sensitive point, and the two poles of the earth of thermistor are respectively connected with temperature sensor line 22d, temperature sensor line 22d stretch out shell 22a and with firstCommunication module 23 connects, and certainly, signal adapter can be also connected between temperature sensor line 22d and first communication module 23Deng component.In addition, in the present embodiment, the bottom wall of the needle point of thermoprobe preferably with cookware 3 touches, so that the temperature-sensitive of thermoprobePoint is close proximity to 3 bottom wall of cookware, so that the condition adjudgement that dry combustion method is closed on to cookware 3 is more accurate.
Especially, in the present embodiment, thermistor includes a first thermistor 22b, first thermistor 22bSet in close to the needle point bottom of thermoprobe, the position where first thermistor 22b is preset height position.ItsIn, 3 2~5mm of bottom wall of the first thermistor 22b preferred distances cookware, i.e. preset height be preferably apart from 3 bottom wall 2mm of cookware~5mm.It is appreciated that since the first thermistor 22b is close from 3 bottom wall of cookware, therefore when the liquid level of liquid in cookware 3 is reduced toDuring position where first thermistor 22b, cookware 3 is i.e. in dry-fire condition is closed on, and at this time, the first thermistor 22b canThe temperature jump caused by the fluid change is perceived, and the temperature information is sent to by first communication module 23The control module 12 of electromagnetic oven 1, control module 12 controls heating unit 11 to stop heating again, to avoid 3 dry combustion method of cookware.
Herein specifically, as shown in figure 4, in another embodiment of the utility model, in thermoprobeIn shell 22a, thermistor is equipped with multiple, and multiple thermistors are vertically to being intervally arranged, it is preferable that multiple thermistor edgesUpward and downward is equidistantly arranged.It is foregoing first thermistor 22b positioned at the lowermost thermistor in these thermistors,Other thermistors for being located above the first thermistor 22b are the second thermistor 22c.It is appreciated that due to multiple temperature-sensitivesResistance when temperature measuring point of the liquid level just below a certain thermistor, then should vertically to being intervally arranged, therefore in heating processThe temperature of place's thermistor test is to be become to test the temperature of liquid level upper air by the temperature of test liquid, so as to temperature occurSuddenly the phenomenon dropped, in this way, water level in cookware 3 can be detected in heating process by the temperature change of each thermistorSituation of change, so as to remind user to add water in time.Certainly, this setting also has the function that dry combustion method prompting and dry combustion method protection,This, adds water to remind and can be sent with dry combustion method prompting by alarm set 16.In addition, the change according to water level in the cookware 3 detectedSituation, this setting can also carry out user the prompting of cooking progress and the deadline is cooked in prediction.Herein it should be noted that,In the present embodiment, insulated heat set 22e, the thermal insulation made of heat-insulating material are additionally provided with the needle point of thermoprobeProtective case 22e can avoid the bottom wall of needle point and cookware 3 because of thermoprobe from touching, and the heat of the bottom wall of cookware 3 is reachedProbe, causes the excessive phenomenon of the measured temperature of the second thermistor 22c to occur.
In the present embodiment, based on descriptions above, to prevent dry combustion method, the control method of electromagnetic oven 1 should wrapInclude following steps：
S1, when receiving heating instructions, control module 12 control heating unit 11 cookware 3 is heated；
Nearly bottom temperature away from bottom wall preset height position in S2, the first temperature measurement module 22 detection cookware, and it is logical by firstThe letter nearly bottom temperature of module 23 is sent to control module 12；
S3, when nearly bottom temperature meets preset condition, control module 12 control heating unit 11 stop heating.
Here, the preset condition of nearly bottom temperature can include following two situations：The first preset condition is：In cookware 3After interior liquid reaches boiling, the nearly bottom temperature T of this acquisition of control module 12nLess than liquid boiling temperature T1；Second of default barPart is：Every prefixed time interval △ t, control module 12 obtains nearly bottom temperature value once, and when control module 12, this is obtainedNearly bottom temperature TnThe nearly bottom temperature T obtained less than last timen-1, and Tn-1With TnDifference be greater than or equal to default first temperature thresholdValue △ BT, in other words, that is, calculate the fall off rate of the adjacent nearly bottom temperature obtained twice, when reduction of speed rate at this temperature be more than it is defaultFall off rate when, control module 12 control heating unit 11 stop heating.Certainly, at this time, Tn-1≤T1.It is appreciated that firstKind preset condition is simple and convenient, but the accuracy judged is not so good as second of preset condition, is preferably used second in the present embodimentPreset condition.
Further to reduce False Rate, in the present embodiment, the second thermometric is additionally provided with 111 lower surface of panel of electromagnetic oven 1Module 13, and second temperature measurement module 13 can be correspondingly provided with second communication module (not shown), therefore after step S1, further includeFollowing steps：
S21, the first temperature measurement module 22 detection cookware 3 in nearly bottom temperature while, the second temperature measurement module 13 also detectsCooking bottom temperature at 3 bottom wall of cookware, and cooking bottom temperature is sent to control module 12.
Correspondingly, after the second temperature measurement module 13 is added, in step s3, the temperature preset condition Ying Jinyi that need to meetStep is optimized for：Every prefixed time interval △ t, control module 12 obtains a cooking bottom temperature and successively nearly bottom temperature；Work as controlThe cooking bottom temperature DT of this acquisition of molding block 12nThe cooking bottom temperature DT obtained more than last timen-1, i.e. DTn>DTn-1, and DTnWith DTn-1Difference be greater than or equal to default second temperature threshold value △ DT；Meanwhile Tn<Tn-1, and Tn-1With TnDifference be greater than or equal to it is pre-If the first temperature threshold △ BT.After meeting the two temperature preset conditions at the same time, control module 12 is just judged at cookware 3In closing on the state of dry combustion method, so as to control heating unit 11 to stop heating.It is appreciated that since temperature preset condition need to expire at the same timeTwo, foot, therefore can effectively avoid judging by accident caused by situations such as liquid fluctuating in cookware 3 or bubble parcel so that for cookware 3The judgement for closing on dry-fire condition can be more accurately and timely reliable.
Herein it should be noted that, for the preset condition of nearly bottom temperature, its be typically before the cooking apparatus dispatches from the factory, according toWhat relevant experimental data was pre-set.Wherein, 5 DEG C~20 DEG C are usually preferably arranged to for electromagnetic oven 1, △ BT scopes,The scope of △ DT is usually preferably arranged to 5 DEG C~10 DEG C, and certainly, the two scopes can also be appropriate according to the type of cooking apparatusSet.In addition, can be also appropriately arranged with for prefixed time interval △ t, △ t according to actual conditions, for electromagnetic oven 1, △ t are usualIt is preferably 30s~60s, △ t are 30s in the present embodiment.Herein specifically, the first temperature measurement module 22 and secondTemperature measurement module 13 is once per second for the test frequency of temperature, but the time interval of the acquisition temperature of control module 12 is (i.e. defaultTime interval △ t) it is 30s~60s, namely control module 12 reads temperature information once every 30s~60s.
It is appreciated that in the present embodiment, liquid in cookware 3 is begun to warm up when electromagnetic oven 1 receives heating instructions,Such as during water, the first temperature measurement module 22 can measure the water temperature T at preset height position0, while the second temperature measurement module 13Measure cooking bottom temperature DT0；Since the specific heat ratio of water is larger, water, which will absorb amount of heat, can just improve own temperature, therefore work asWhen having water in pot, the temperature of water slowly rises, and at this time, the temperature of the first temperature measurement module 22 detection also slowly rises, when water heatsTo after boiling, the temperature that the first temperature measurement module 22 measures is the boiling temperature of water, meanwhile, the temperature that the second temperature measurement module 13 measuresDegree also constantly slowly rises；However, with the continuous explosive evaporation of water in pot, the water surface can be reduced constantly, when the water surface just belowDuring height and position where the first thermistor of the lowermost 22b of preset height, i.e. the first temperature measurement module 22, the first thermometricModule 22 will be changed into testing the temperature of water surface upper air from the temperature of test water, i.e., generate temperature steep drop in a short timePhenomenon, and the temperature value constantly declines, at this time, due to water in cookware 3 also close to dry state, therefore the second temperature measurement module 13Cooking bottom temperature also rapid increase is detected, in this way, the control module 12 of electromagnetic oven 1 combines the two temperature informations, you can accurateJudge that dry combustion method will occur for cookware 3, so as to control heating unit 11 to stop heating immediately, to protect cookware 3 not damaged by dry combustion method.Certainly, if heating unit 11 does not stop heating, dry combustion method will directly occur for cookware 3, in the present embodiment, due to thermoprobeAfter the bottom wall of needle point and cookware 3 touches, therefore dry combustion method occurs for cookware 3, temperature that the first temperature measurement module 22 detects can drastically onRise, the cooking bottom temperature that certain second temperature measurement module 13 measures can also steeply rise, thus easily cookware 3 and electromagnetic oven 1 are madeInto damage.
In addition, in the present embodiment, further to reduce False Rate, electromagnetic oven 1 is further included to be electrically connected with control module 12Dry combustion method protection module 15, therefore further, step S3 can be specially：When temperature meets preset condition, dry combustion method protection module15 reset current value, temperature value, time counting value etc., and clearing result is fed back to control module 12, control module 12According to clearing as a result, control heating unit 11 stops heating.
In addition, electromagnetic oven 1 further includes a heating function detection module 14 being electrically connected with control module 12, the master of the moduleWant whether function receives heating instructions for detection electromagnetic oven 1, for example, the module detects " Baoshang " button or " chafing dish " etc.During by key pressing, it is possible to send the signal for having been received by heating instructions to control module 12, control module 12 is i.e. controllable to be addedThermal 11 heats cookware 3.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,It is every under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomesChange, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.