CN117330202B - Temperature sensor for monitoring temperature of electric cooker and temperature monitoring control method thereof - Google Patents
Temperature sensor for monitoring temperature of electric cooker and temperature monitoring control method thereof Download PDFInfo
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- CN117330202B CN117330202B CN202311546610.7A CN202311546610A CN117330202B CN 117330202 B CN117330202 B CN 117330202B CN 202311546610 A CN202311546610 A CN 202311546610A CN 117330202 B CN117330202 B CN 117330202B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 181
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 239000011810 insulating material Substances 0.000 claims abstract description 8
- 241000209094 Oryza Species 0.000 claims description 60
- 235000007164 Oryza sativa Nutrition 0.000 claims description 60
- 235000009566 rice Nutrition 0.000 claims description 60
- 238000010411 cooking Methods 0.000 claims description 59
- 238000001816 cooling Methods 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 239000000741 silica gel Substances 0.000 claims description 24
- 229910002027 silica gel Inorganic materials 0.000 claims description 24
- 238000004321 preservation Methods 0.000 claims description 19
- 230000000630 rising effect Effects 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 description 43
- 230000000694 effects Effects 0.000 description 21
- 230000009286 beneficial effect Effects 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 230000020169 heat generation Effects 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- 229920001342 Bakelite® Polymers 0.000 description 4
- 239000004637 bakelite Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Nonlinear Science (AREA)
- Cookers (AREA)
Abstract
The application relates to the field of electric cooker temperature monitoring, and discloses a temperature sensor for electric cooker temperature monitoring, which comprises a metal cover, a heat conducting fin, a first thermistor, a second thermistor, a thermal fuse and a fixing frame, wherein the metal cover is fixedly connected to the fixing frame, the heat conducting fin is abutted to the inner side wall of the top of the metal cover, and the first thermistor and the thermal fuse are both in heat conduction connection with the heat conducting fin; the mount is made through insulating material, and the mount surrounds first thermistor and thermal fuse's binding post in, and the second thermistor is connected on the bottom or the lateral wall of mount, and the second thermistor is used for detecting the temperature of electric cooker heating plate. According to the application, the temperature of the pot body and the temperature of the heating plate of the electric pot are used for controlling the electric pot, so that the safety and stability of the electric pot in use are further improved.
Description
Technical Field
The application relates to the technical field of electric cooker temperature monitoring, in particular to a temperature sensor for electric cooker temperature monitoring and a temperature monitoring control method thereof.
Background
The electric cooker comprises an electric cooker, an electric soup cooker, an electric hot pot, an electric pressure cooker, an electric frying cooker and the like. The temperature is a very critical physical quantity in electric cooker cooking, and in the temperature monitoring of the intelligent electric cooker, the possible heating defect can be judged, so that the processing can be found timely, the phenomenon of sticking to the cooker is prevented, and the electric cooker is set to operate according to the preset temperature, thereby ensuring the cooking quality. The realization of the process can be realized only by combining a thermistor temperature sensor with a singlechip to perform temperature acquisition first and then performing digital temperature conversion and output. The current temperature sensor device for electric cooker, electric pressure cooker or electric frying pan is composed of an axial glass-sealed thermistor and an insulating sleeve, and the axial glass-sealed thermistor cannot be effectively and closely attached to a metal surface because the insulating sleeve insulates heat and the thermistor is arranged in the sleeve and has a gap, so that the heat reaction of the current product is slow and the heat reaction consistency is poor.
Patent CN113475941B (application number: CN 202110908093.8) provides a quick, accurate temperature detection's electric pot temperature sensor, including aluminium temperature sensing lid, element installation component, thermal fuse body subassembly, thermistor subassembly and five metals base, thermal fuse body subassembly, thermistor subassembly are installed in the plastic fixed bolster, and hug closely with the another side of heat conduction silica gel gasket, design has sunken semi-circular structure in the middle of the heat conduction potsherd, thermistor subassembly hugs closely sunken semi-circular structure, make thermistor subassembly's heated area bigger for thermistor subassembly detects temperature's speed is faster, simultaneously, heat conduction silica gel gasket supports thermistor bottom, makes thermal resistance hug closely the potsherd and carries out temperature detection, also can prevent that the thermistor from being crushed. The electric cooker temperature sensor in the patent CN113475941B can solve the technical problems of slow thermal reaction, poor thermal reaction consistency and low detection accuracy of the temperature sensor, but in actual use, if the thermal fuse link assembly or the thermistor assembly fails in use, the temperature detection of the electric cooker will be failed, and then the phenomena of sticking and burning the electric cooker are caused.
Disclosure of Invention
The application aims to provide a temperature sensor for monitoring the temperature of an electric cooker, which solves the technical problems that in actual use, if a thermal fuse assembly or a thermistor assembly fails in use, the temperature of the electric cooker is detected to be malfunctioning, and further the phenomena of sticking and burning are caused, and achieves the technical effects of controlling the electric cooker through the temperature of a cooker body and the temperature of a heating disc of the electric cooker and improving the safety and stability of the electric cooker in use.
The embodiment of the application provides a temperature sensor for monitoring the temperature of an electric cooker, which comprises a metal cover, a heat conducting sheet, a first thermistor, a second thermistor, a thermal fuse and a fixing frame, wherein the metal cover is fixedly connected to the fixing frame, the heat conducting sheet is abutted to the inner side wall of the top of the metal cover, and the first thermistor and the thermal fuse are both in heat conducting connection with the heat conducting sheet; the mount is made through insulating material, and the mount surrounds first thermistor and thermal fuse's binding post in, and the second thermistor is connected on the bottom or the lateral wall of mount, and the second thermistor is used for detecting the temperature of electric cooker heating plate.
In one possible implementation manner, the thermal insulation fixing device further comprises a thermal conduction silica gel piece, wherein a positioning groove is formed in the thermal conduction piece, the first thermistor and the thermal fuse are embedded in the positioning groove, the thermal conduction silica gel piece is fixedly connected with the first thermistor and the thermal fuse in a sticking mode and is fixedly connected with the positioning groove, and the thermal conduction silica gel piece is fixedly connected with the fixing frame.
In another possible implementation manner, an opening part forming an opening is formed in the side wall of the fixing frame, the heat-conducting silica gel sheet extends into the opening part, the second thermistor is arranged in the opening part and is abutted against the heat-conducting silica gel sheet, and an arched heat conductor matched with the electric cooker heating disc is sleeved outside the second thermistor.
In another possible implementation manner, the fixing frame is fixedly connected to the metal support, the ground wire is connected to the metal support, and the second thermistor is fixedly connected to the metal support.
The embodiment of the application provides a temperature monitoring control method, which is used for monitoring the temperature of an electric cooker by using the temperature sensor for monitoring the temperature of the electric cooker, wherein a controller of the electric cooker is respectively and electrically connected with a first thermistor and a second thermistor, and a heating disc is also electrically connected with the controller of the electric cooker, and the method comprises the following steps: when the rice cooker works in a rice cooking mode, a first temperature value detected by the first thermistor is obtained, and a second temperature value detected by the second thermistor is obtained; determining a first heating rate detected by a first thermistor and a second heating rate detected by a second thermistor in a first preset time period from the start of heating by electrifying the heating plate; when the difference value of the first heating rate and the second heating rate is larger than or equal to the first preset rate difference value, the controller controls the heating plate to be electrified to continuously work in the rice cooking mode.
In another possible implementation manner, the method further includes: when the rice cooker works in a rice cooking mode, a first temperature value detected by the first thermistor is obtained, and a second temperature value detected by the second thermistor is obtained; determining a first heating rate detected by a first thermistor and a second heating rate detected by a second thermistor in a first preset time period from the start of heating by electrifying the heating plate; when the difference value of the first heating rate and the second heating rate is smaller than the first preset rate difference value, the controller controls the heating plate to be powered off and stops working for a first time period; after the first time period, the controller controls the heating plate to be electrified to start working in the rice cooking mode for a second time period.
In another possible implementation manner, the method further includes: when the second heating rate is smaller than the first preset rate, the controller prompts maintenance of the heating plate and controls the heating plate to stop working when the power is off.
In another possible implementation manner, the method further includes: when the temperature sensor works in the heat preservation mode, a first temperature value detected by the first thermistor is obtained, and a second temperature value detected by the second thermistor is obtained; determining a first cooling rate detected by the first thermistor and a second cooling rate detected by the second thermistor in a second preset time period when the heating disc is powered off and heating is stopped; when the difference value of the second cooling rate and the first cooling rate is smaller than or equal to the second preset rate difference value, the heating plate is controlled to work in the heat preservation mode continuously.
In another possible implementation manner, the method further includes: when the heating plate works in the rice cooking mode, when the first temperature value reaches the first target temperature value, when the temperature difference value between the second temperature value and the first temperature value is larger than or equal to the preset temperature difference value, the heating plate is controlled to stop working for a third time period, and when the temperature difference value between the second temperature value and the first temperature value is smaller than the preset temperature difference value, the heating plate is restarted to work in the rice cooking mode again.
In another possible implementation manner, the method further includes: when the first temperature value is greater than or equal to a first preset temperature value and the second temperature value is greater than or equal to a second preset temperature value, the heating plate is controlled to stop working, and the heating plate or a driving circuit of the heating plate is overhauled in a prompting mode.
In another possible implementation manner, the plurality of second thermistors is uniformly distributed on the bottom or the outer side wall of the fixing frame, and the second temperature value is determined by the following method: when the rice cooking mode is switched into the heat preservation mode, a target second thermistor with the smallest difference value between the temperature detection value of the plurality of second thermistors and the temperature detection value of the first thermistor is determined, and the temperature value detected by the target second thermistor is taken as a second temperature value.
In another possible implementation manner, the method further includes: when the rice cooking mode is switched into the heat preservation mode, when the difference value between the temperature detection values of all the second thermistors and the temperature detection value of the first thermistors is larger than the preset temperature difference value, prompting the maintenance of all the second thermistors and controlling the heating plate to stop working.
Compared with the prior art, the embodiment of the application has the beneficial effects that:
The embodiment of the application provides a temperature sensor for monitoring the temperature of an electric cooker, which comprises a metal cover, a heat conducting sheet, a first thermistor, a second thermistor, a thermal fuse and a fixing frame, wherein the metal cover is fixedly connected to the fixing frame, the heat conducting sheet is abutted against the inner side wall of the top of the metal cover, and the first thermistor and the thermal fuse are both in heat conducting connection with the heat conducting sheet; the mount is made through insulating material, and the mount surrounds first thermistor and thermal fuse's binding post in, and the second thermistor is connected on the bottom or the lateral wall of mount, and the second thermistor is used for detecting the temperature of electric cooker heating plate. The temperature sensor for monitoring the temperature of the electric cooker can control the electric cooker through the temperature of the cooker body and the temperature of the heating plate of the electric cooker, so that the safety and stability of the electric cooker in use are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram showing a front view of a conventional temperature sensor for monitoring a temperature of an electric cooker;
FIG. 2 is a schematic diagram showing a side view of a conventional temperature sensor for monitoring temperature of an electric cooker;
FIG. 3 is a schematic side view of a conventional temperature sensor for monitoring temperature of an electric cooker;
Fig. 4 is a schematic diagram showing a three-dimensional exploded structure of a conventional temperature sensor for monitoring temperature of an electric cooker;
fig. 5 is a schematic diagram showing a front view of a temperature sensor for monitoring temperature of an electric pan according to an embodiment of the present application;
FIG. 6 is a schematic view of a cross section A-A of the temperature sensor for monitoring the temperature of the electric cooker in FIG. 5;
FIG. 7 is a schematic view showing a structure of a B-B cross section of the temperature sensor for monitoring the temperature of the electric pot in FIG. 5;
FIG. 8 is a schematic diagram showing a front view of another temperature sensor for monitoring temperature of an electric pan according to an embodiment of the present application;
fig. 9 is a schematic diagram of a control structure of a temperature sensor for monitoring temperature of an electric pan according to an embodiment of the present application;
In the figure, 101, a temperature-sensing aluminum cover; 102. a ceramic sheet; 103. a thermistor; 104. safety; 105. a connection terminal; 106. a ceramic support; 107. a silica gel pressing plate; 108. a grounded metal bracket; 1. a metal cover; 2. a heat conductive sheet; 21. a positioning groove; 31. a first thermistor; 32. a second thermistor; 321. a heat conductor; 4. a thermal fuse; 5. a fixing frame; 51. an opening portion; 6. a thermally conductive silicone sheet; 7. a metal bracket; 8. a controller; 9. a heating plate.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element or structure is referred to as being "mounted" or "disposed" on another element or structure, it can be directly on the other element or structure or be indirectly on the other element or structure. When an element or structure is referred to as being "connected to" another element or structure, it can be directly connected to the other element or structure or be indirectly connected to the other element or structure.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the apparatus or one component or structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Patent CN113475941B (application number: CN 202110908093.8) provides a quick, accurate temperature-detecting electric cooker temperature sensor, including aluminium temperature sensing lid, element installation component, thermal fuse subassembly, thermistor subassembly and five metals base, thermal fuse subassembly, thermistor subassembly are installed in the plastic fixed bolster, and hug closely with the another side of heat conduction silica gel gasket, design has sunken semi-circular structure in the middle of the heat conduction potsherd, and thermistor subassembly hugs closely sunken semi-circular structure, makes thermistor subassembly's heated area bigger for thermistor subassembly detects the speed of temperature faster. The electric cooker temperature sensor in the patent CN113475941B can solve the technical problems of slow thermal reaction, poor thermal reaction consistency and low detection accuracy of the temperature sensor, but in actual use, if the thermal fuse link assembly or the thermistor assembly fails in use, the temperature detection of the electric cooker will be failed, and then the phenomena of sticking and burning the electric cooker are caused.
Fig. 1 is a schematic diagram of a front view structure of a conventional temperature sensor for monitoring a temperature of an electric pot, fig. 2 is a schematic diagram of a side view structure of a conventional temperature sensor for monitoring a temperature of an electric pot, fig. 3 is a schematic diagram of a side view structure of a conventional temperature sensor for monitoring a temperature of an electric pot, fig. 4 is a schematic diagram of a three-dimensional exploded structure of a conventional temperature sensor for monitoring a temperature of an electric pot, as shown in fig. 1 to 4, the conventional temperature sensor for monitoring a temperature of an electric pot comprises a temperature sensing aluminum cover 101, a ceramic plate 102, a thermistor 103, a fuse 104, a connecting terminal 105, a ceramic bracket 106, a silica gel pressure plate 107 and a grounding metal bracket 108, the ceramic plate 102 plays a role of heat conduction, the thermistor 103 is used for sensing the temperature of the temperature sensing aluminum cover 101, the fuse 104 is used for connecting the thermistor 103, the fuse 104 and a control circuit, the ceramic bracket 106 is used for fixedly mounting the thermistor 103, the fuse 104 is used for fixedly supporting the thermistor 103, and the grounding metal bracket 108 is used for fixedly mounting the ceramic bracket 106. In actual use, if the thermistor 103 and/or the safety 104 fail in use, the temperature detection of the electric cooker will fail, and thus the phenomena of sticking and burning are caused.
Based on the above, the embodiment of the application provides a temperature sensor for monitoring the temperature of an electric cooker, which comprises a metal cover, a heat conducting fin, a first thermistor, a second thermistor, a thermal fuse and a fixing frame, wherein the metal cover is fixedly connected to the fixing frame, the heat conducting fin is abutted to the inner side wall of the top of the metal cover, and the first thermistor and the thermal fuse are both in heat conduction connection with the heat conducting fin; the mount is made through insulating material, and the mount surrounds first thermistor and thermal fuse's binding post in, and the second thermistor is connected on the bottom or the lateral wall of mount, and the second thermistor is used for detecting the temperature of electric cooker heating plate. The temperature sensor for monitoring the temperature of the electric cooker can control the electric cooker through the temperature of the cooker body and the temperature of the heating plate of the electric cooker, so that the safety and stability of the electric cooker in use are improved.
In some scenes, the temperature sensor for monitoring the temperature of the electric cooker can be applied to temperature monitoring of kitchen ware such as the electric cooker, and the temperature detection effect and the safety protection effect on the electric cooker can be improved through the temperature sensor for monitoring the temperature of the electric cooker.
The temperature sensor for monitoring the temperature of the electric cooker and the temperature monitoring control method thereof provided by the embodiment of the application are specifically described below with reference to specific examples.
Fig. 1 is a schematic front view of a temperature sensor for monitoring a temperature of an electric cooker according to an embodiment of the application, fig. 2 is a schematic structure of a cross section A-A of the temperature sensor for monitoring a temperature of an electric cooker according to fig. 1, and as shown in fig. 1 and 2, the temperature sensor for monitoring a temperature of an electric cooker according to an embodiment of the application includes a metal cover 1, a heat conducting strip 2, a first thermistor 31, a second thermistor 32, a thermal fuse 4 and a fixing frame 5, wherein the metal cover 1 is fixedly connected to the fixing frame 5, the heat conducting strip 2 is abutted against an inner side wall at the top of the metal cover 1, and the first thermistor 31 and the thermal fuse 4 are both in heat conducting connection with the heat conducting strip 2.
As shown in fig. 1 and 2, in structure, the metal cover 1 is used for surrounding protection of the heat conducting fin 2, the first thermistor 31, the second thermistor 32 and the thermal fuse 4, and the metal cover 1 is directly contacted with the pot body of the electric pot, so that the pot body of the electric pot transfers heat to the metal cover 1 in use.
In use, the thermally conductive sheet 22 is used to transfer heat to the first thermistor 31, and the first thermistor 31 is used to detect the temperature of the body of the electric cooker. When the temperature of the pot body of the electric pot changes during the use process of the first thermistor 31, the resistance value of the first thermistor 31 changes under the influence of the temperature of the pot body of the electric pot, and further the change of the temperature of the pot body of the electric pot can be detected through the change of the resistance value of the first thermistor 31.
When the electric cooker is used, the thermal fuse 4 is used for fusing when the temperature of the cooker body of the electric cooker is too high, so that a circuit is protected. When the thermal fuse 4 is fused, the power supply circuit of the electric cooker is correspondingly powered off, so that the temperature of the electric cooker is correspondingly changed.
The fixing frame 5 is used for fixing the heat conducting strip 2, the first thermistor 31, the second thermistor 32 and the thermal fuse 4, and further can install the heat conducting strip 2, the first thermistor 31, the second thermistor 32 and the thermal fuse 4 in the metal cover 1.
In some implementations, the fixing frame 5 is made of a heat-conducting and insulating material, the fixing frame 5 encloses the first thermistor 31 and the connection terminal of the thermal fuse 4, the second thermistor 32 is connected to the bottom or the outer side wall of the fixing frame 5, and the second thermistor 32 is used for detecting the temperature of the electric cooker heating plate.
As shown in fig. 1 and 2, structurally, the fixing frame 5 is made of a heat-conducting insulating material (for example, bakelite), the fixing frame 5 fixes the connection terminals of the thermistor 31 and the thermal fuse 4, and encloses the connection terminals of the thermistor 31 and the thermal fuse 4, respectively, so that the enclosure protection of the connection terminals of the first thermistor 31 and the thermal fuse 4 is realized.
The second thermistor 32 is connected to the bottom or the outer side wall of the fixing frame 5, and the temperature of the heating plate of the electric cooker can be detected through the second thermistor 32, and the working state of the heating plate of the electric cooker can be controlled through the temperature of the heating plate detected by the second thermistor 32.
Illustratively, as shown in fig. 1, the second thermistor 32 is fixedly connected to the outer side wall of the fixing frame 5, and when the temperature sensor for monitoring the temperature of the electric cooker is installed in the middle of the heating plate, the second thermistor 32 can be directly abutted against the heating plate, so that the second thermistor 32 can directly detect the temperature of the heating plate of the electric cooker, and the detection effect on the temperature of the heating plate of the electric cooker is ensured.
Illustratively, the fixing frame 5 is made of insulating materials, the fixing frame 5 is generally made of bakelite, the heat conductivity coefficient of the bakelite is between 0.3 and 0.4W/m.K, the heat conductivity coefficient of the bakelite is equivalent to that of a plastic material, when the temperature of the electric cooker is detected, the first thermistor 31 is equivalent to that of a heat conducting sheet with excellent direct detection heat conductivity, the second thermistor 32 is used for detecting the temperature of a heating disc of the electric cooker, the detection positions and the detection temperatures of the first thermistor 31 and the second thermistor 32 are different, and the first thermistor 31 and the second thermistor 32 can be matched with each other to detect and control the temperature of the electric cooker more accurately.
The beneficial effect that foretell realization mode brought lies in, through setting up the culinary art temperature in the first thermistor survey electric cooker to through the temperature of second thermistor survey electric cooker dish that generates heat, can improve security and the stability to the control of electric cooker through the temperature to the pot body of electric cooker and electric cooker dish that generates heat.
In some implementations, the temperature sensor for monitoring a temperature of an electric cooker further includes a heat-conducting silica gel piece 6, the heat-conducting piece 2 is provided with a positioning groove 21, the first thermistor 31 and the thermal fuse 4 are embedded in the positioning groove 21, the heat-conducting silica gel piece 6 is fixedly connected with the first thermistor 31 and the thermal fuse 4 on the positioning groove 21 in a pasting manner, and the heat-conducting silica gel piece 6 is fixedly connected in the fixing frame 5.
As shown in fig. 1 and 2, structurally, the heat conducting strip 2 is provided with a positioning groove 21 for fixing the first thermistor 31 and the thermal fuse 4, the first thermistor 31 and the thermal fuse 4 are embedded in the positioning groove 21, and the positioning groove 21, the first thermistor 31 and the thermal fuse 4 are mutually matched, so that the first thermistor 31 and the thermal fuse 4 can sense the temperature in the positioning groove 21 more accurately and comprehensively, and the temperature detection effect of the first thermistor 31 and the thermal fuse 4 on the pot body of the electric pot through the heat conducting strip 2 is improved.
As shown in fig. 1, the heat-conducting silicone sheet 6 is used for supporting the first thermistor 31 and the thermal fuse 4, and supports the first thermistor 31 and the thermal fuse 4 through the heat-conducting silicone sheet 6, so that the first thermistor 31 and the thermal fuse 4 can be adhered to and pressed against the heat-conducting sheet 2, the fixing effect of the first thermistor 31 and the thermal fuse 4 on the heat-conducting sheet 2 is improved, and the temperature sensing effect of the first thermistor 31 and the thermal fuse 4 on the pot body of the electric pot is ensured.
The beneficial effect that foretell realization mode brought lies in, through surrounding first thermistor and thermal fuse in the constant head tank to first thermistor, thermal fuse and heat conduction silica gel piece laminating, be convenient for fix the wiring of first thermistor, thermal fuse through heat conduction silica gel piece, and can protect the wiring of first thermistor and thermal fuse, can closely pressfitting first thermistor and thermal fuse on the heat conduction piece simultaneously, improved the sensitivity that first thermistor and thermal fuse respond to the pot temperature.
In some implementations, the side wall of the fixing frame 5 is provided with an opening 51 forming an opening, the heat-conducting silica gel sheet 6 extends into the opening 51, the second thermistor 32 is arranged in the opening 51 and is abutted against the heat-conducting silica gel sheet 6, and an arched heat conductor 321 matched with the electric cooker heating disc is sleeved outside the second thermistor 32.
Fig. 3 is a schematic view showing a structure of a cross section B-B of the temperature sensor for monitoring a temperature of the electric pot in fig. 1, and as shown in fig. 3, an opening 51 is provided in a side wall of the holder 5 for accommodating and positioning the second thermistor 32.
Structurally, the second thermistor 32 is limited through the opening 51 when mounted, and meanwhile, the heat-conducting silicone sheet 6 extends into the opening 51 and is abutted against the second thermistor 32, so that the second thermistor 32 can be abutted against the electric cooker heating plate under the elastic support provided by the heat-conducting silicone sheet 6, and the second thermistor 32 can directly detect the temperature of the electric cooker heating plate.
Structurally, as shown in fig. 3, the second thermistor 32 is externally sleeved with an arched heat conductor 321 matched with the electric cooker heating plate, and when the heat conductor 321 is matched with the inner side wall of a through hole in the middle of the electric cooker heating plate, the temperature of the heating plate can be accurately detected through the heat conductor 321 and the second thermistor 32 in the heat conductor 321, and the second thermistor 32 can be fixed through the heat conductor 321.
Illustratively, the heat conductor 321 may be made of metal, and the heat conductor 321 may be mounted on the fixing frame 5 by screws.
The beneficial effect that the realization mode brought is that, be convenient for fix second thermistor 32 through the opening 51 on mount 5 for second thermistor 32 can keep stable, is convenient for detect the temperature of electric cooker heating plate.
The beneficial effect that foretell realization brought also lies in that heat conduction silica gel piece 6 can support first thermistor 31, thermal fuse 4 and second thermistor 32 simultaneously for heat conduction silica gel piece 6 can support tightly fixed first thermistor 31, thermal fuse 4, and can support tightly fix second thermistor 32 on the electric cooker heating plate, has improved the compactness of this temperature sensor for electric cooker temperature monitoring's structure, and has simplified this temperature sensor for electric cooker temperature monitoring's structure.
In some implementations, the fixing frame 5 is fixedly connected to the metal bracket 7, the metal bracket 7 is connected to a ground wire, and the second thermistor 32 is fixedly connected to the metal bracket 7.
Fig. 4 is a schematic diagram of a front view of another temperature sensor for monitoring temperature of an electric pan according to an embodiment of the present application, and as shown in fig. 4, in the structure, a fixing frame 5 is fixedly connected to a metal bracket 7, and the fixing frame 5 can be installed and fixed through the metal bracket 7.
Structurally, the second thermistor 32 is fixedly connected to the metal support 7, the metal support 7 is made of metal, and the structure of the metal support 7 is easier to shape, so that the second thermistor 32 can be fixed more conveniently through the metal support 7.
Structurally, the metal bracket 7 is connected with a ground wire, so that the electric cooker heat conducting disc and the second thermistor 32 are conveniently grounded.
The implementation mode has the beneficial effects that the second thermistor is arranged on the metal bracket, so that the temperature of the heating disc can be conveniently detected through the second thermistor on the metal bracket.
The beneficial effect that foretell realization mode brought also lies in that, and the plasticity of the metal support of metal material is strong, installs fixedly the second thermistor through the metal support of being convenient for production and processing more conveniently.
The embodiment of the application also provides a temperature monitoring control method, which is used for monitoring the temperature of the electric cooker by using the temperature sensor for monitoring the temperature of the electric cooker, and fig. 5 is a schematic diagram of a control structure of the temperature sensor for monitoring the temperature of the electric cooker, and as shown in fig. 5, a controller 8 of the electric cooker is respectively and electrically connected with a first thermistor 31 and a second thermistor 32, and a heating disc 9 is also electrically connected to the controller 8 of the electric cooker, and when in use, the working state of the heating disc 9 is controlled by the controller 8 according to the detection results of the first thermistor 31 and the second thermistor 32.
The embodiment of the application also provides a temperature monitoring control method, which comprises S110 to S130, and the following specific description is given to the S110 to S130.
S110, when operating in the rice cooking mode, a first temperature value detected by the first thermistor 31 is obtained, and a second temperature value detected by the second thermistor 32 is obtained.
When the electric cooker is used for cooking, the working state of the heating plate can be controlled according to the temperature of the heating plate 9 of the electric cooker and the temperature of water and rice in the electric cooker, if the electric cooker uses hot water with higher temperature for cooking, the heating speed of the water and the rice in the electric cooker is too high at the moment, and the heating speed of the heating plate to the cooker body of the electric cooker is too high when the rice in the cooker body of the electric cooker is not cooked yet, so that the electric cooker trips, and the electric cooker is not cooked finally at the moment, so that the using effect of the electric cooker is affected.
Additionally, the existing electric cookers often have a temperature control function, for example, a cooking control method of a cooking appliance disclosed in patent application number CN202210262524.2 discloses a "heating stage", in which a control unit controls a heating device to heat to a set temperature T1 with a first power; in the boiling stage, the control unit controls the heating device to heat for a set time t1 at the second power; in the stewing stage, the control unit controls the heating device to intermittently heat until the stewing time is over; the control unit prompts the end of cooking, achieves the aim of controlling the cooking temperature in stages by controlling the cooking temperature, and the temperature sensor for monitoring the temperature of the electric cooker in the embodiment of the application can be applied to the process of controlling the cooking temperature in stages in the cooking process, determines the temperature change of water and rice in the cooker body in the cooking process according to the first temperature rising rate detected by the first thermistor 31 and the second temperature rising rate detected by the second thermistor 32, and improves the control effect on the water temperature used in the cooking process.
Therefore, the working state of the electric cooker can be determined by the first temperature value detected by the first thermistor 31 and the second temperature value detected by the second thermistor 32, the monitoring effect on the temperature of water and rice in the electric cooker is improved, and poor control on the temperature of water and rice in the cooking process is avoided.
S120, determining a first temperature rising rate detected by the first thermistor 31 and determining a second temperature rising rate detected by the second thermistor 32 in a first preset time period from the start of heating by electrifying the heating plate 9.
For example, the first heating rate detected by the first thermistor 31 may be determined to be 20 ℃/min and the second heating rate detected by the second thermistor 32 may be determined to be 200 ℃/min within a first preset time period of 5min from when the heating plate 9 is powered on, and the temperature of the heating plate may reach about 103 ℃ within 0.5min, i.e. remain stable.
And S130, when the difference value of the first heating rate and the second heating rate is larger than or equal to the first preset rate difference value, the controller 8 controls the heating plate 9 to be electrified to continuously work in the rice cooking mode.
For example, in the process of controlling the cooking according to the purpose of staged heating, the first preset speed difference may be 90 ℃/min, the difference between the first heating speed 20 ℃/min and the second heating speed 200 ℃/min is 180 ℃/min, which indicates that the difference between the first heating speed and the second heating speed is greater than or equal to the first preset speed difference due to the low initial temperature of the water in the electric cooker, and the temperature control process in the electric cooker is in a normal state at this time, and the controller 8 can control the heating plate 9 to be powered on to continuously operate in the cooking mode.
The realization mode has the beneficial effects that when the difference between the temperature rate of water and rice in the pot body of the electric pot and the temperature rising rate of the heating plate is large, the water temperature in the pot body of the electric pot is increased within the range of the preset temperature rising rate, and the heating plate is controlled to work continuously in the rice cooking mode, so that the rice cooking process can be ensured to be carried out according to the preset temperature control process, and the control effect on the rice cooking temperature is improved.
In some implementations, the method further includes S210 to S240, and S210 to S240 are specifically described below.
S210, when operating in the rice cooking mode, acquiring a first temperature value detected by the first thermistor 31 and acquiring a second temperature value detected by the second thermistor 32.
When the electric cooker works in the rice cooking mode, when the temperature in the cooker body is controlled in the rice cooking process, the first temperature value detected by the first thermistor 31 is obtained, the second temperature value detected by the second thermistor 32 is obtained, and then the temperature in the cooker body and the temperature of the heating disc 9 of the electric cooker can be detected.
S220, determining a first temperature rising rate detected by the first thermistor 31 and determining a second temperature rising rate detected by the second thermistor 32 in a first preset period of time from when the heat-generating plate 9 is powered on to start heating.
For example, the first heating rate detected by the first thermistor 31 may be determined to be 30 ℃/min, and the second heating rate detected by the second thermistor 32 may be determined to be 200 ℃/min within a first preset period of time 3min from when the heat-generating disc 9 is powered on, and the temperature of the heat-generating disc reaches about 103 ℃ within 0.5min, i.e., remains stable.
And S230, when the difference value of the first heating rate and the second heating rate is smaller than the first preset rate difference value, the controller 8 controls the heating plate 9 to be powered off and stop working for a first period of time.
When cooking, some users may use high-temperature water to cook rice or the amount of water and rice for cooking rice is small, so that the temperature in the pot body is increased too quickly when the water and the rice are heated to affect the effect of cooking rice, and at the moment, if the temperature in the pot body of the electric pot needs to be controlled according to a preset temperature control mode, the difference value between the first heating rate and the second heating rate can be detected, and the temperature in the pot body is controlled accordingly, so that the effect of cooking rice is improved.
For example, when the first preset rate difference is 150 ℃/min, if the first heating rate is detected to be 60 ℃/min and the second heating rate is detected to be 200 ℃/min, the difference between the first heating rate 60 ℃/min and the second heating rate 200 ℃/min is smaller than the first preset rate difference of 150 ℃/min, which indicates that the detected temperature rising rate in the pot body of the electric pot is too high, at the moment, the controller 8 can control the heating plate 9 to be powered off to stop working for a first period of time so as to soak rice in the pot body, so that rice is soaked and softened, smooth operation of temperature control in the subsequent rice cooking process is ensured, and the rice can be cooked.
Illustratively, the first time period may be 5 minutes.
S240, after the first period, the controller 8 controls the heating panel 9 to be powered on to start working in the rice cooking mode for a second period.
After the first time period is 5min, the controller 8 can control the heating plate 9 to be electrified to start working in the rice cooking mode for a second time period, and then a subsequent heating process is performed, so that the temperature in the pot body of the electric pot can be controlled according to a preset working mode, and further rice can be smoothly cooked.
Illustratively, the second time period may be 15 minutes.
The beneficial effect that the realization mode brought above-mentioned lies in, when the difference of the temperature rising rate that first thermistor and second thermistor detected is less than first preset rate difference, the explanation is cooked the temperature of water of rice too high, the condition that the rice is cooked not ripe or to the temperature control of cooking can not carry out temperature control according to predetermined mode easily takes place, in order to eliminate the higher influence of the initial temperature of the internal rice of pot and water, continue to cook after the control heating plate stops working first time period in the in-process of cooking, soak water and rice, and then can normally cook rice, or control the temperature of cooking according to predetermined mode and control.
In some implementations, the method further includes: when the second heating rate is smaller than the first preset rate, the controller 8 prompts maintenance of the heating plate 9 and controls the heating plate 9 to be powered off to stop working.
When in use, the second temperature rising rate represents the working state of the heating plate 9, so that whether the heating plate 9 is normal or not can be detected according to the working state of the heating plate 9, and the detection effect on the state of the heating plate 9 can be improved.
Illustratively, the first preset rate may be 150 ℃/min, and the detected second heating rate may be 120 ℃/min, at which time the controller 8 prompts maintenance of the heat-generating disc 9 and controls the heat-generating disc 9 to be powered off to stop working.
Illustratively, when the controller 8 prompts maintenance of the heat generating disc 9, a prompt function may be implemented by a prompt light on the controller 8.
The beneficial effect that the realization mode brought above-mentioned lies in, if the heating rate of dish that generates heat is too slow, indicates that the dish that generates heat 9 can not reach the heating effect of predetermineeing this moment, indicates that the dish that generates heat does not normally work, can control the dish that generates heat and outage and overhaul the dish that generates heat this moment.
In some implementations, the method further includes S310 to S330, and S310 to S330 are specifically described below.
S310, when the battery is operated in the heat preservation mode, a first temperature value detected by the first thermistor 31 is obtained, and a second temperature value detected by the second thermistor 32 is obtained.
When working in the heat preservation mode, the requirements to be met are that the temperature of the heating plate 9 is basically the same as that of the electric cooker, and the aim of preserving heat of food in the cooker body can be achieved at the moment. Therefore, the purpose of excellent heat preservation effect on food can be achieved by detecting the first temperature value by the first thermistor 31 and acquiring the second temperature value by the second thermistor 32.
S320, determining a first cooling rate detected by the first thermistor 31 and determining a second cooling rate detected by the second thermistor 32 in a second preset time period when the heating plate 9 is powered off and stops heating.
For example, the duration of the second preset time period may be 2min, so as to detect whether the heat-generating disc 9 works in the normal working state, detect the second cooling rate detected by the second thermistor 32, further determine the cooling rate of the heat-generating disc 9, and improve the control of the heat-generating process of the heat-generating disc 9.
For example, in the second preset time period of 2min, the first cooling rate of the detected first thermistor 31 may be 8 ℃/min, the second cooling rate of the detected second thermistor 32 may be 12 ℃/min, and the temperature control effect on the pot body may be determined through the first cooling rate and the second cooling rate.
S330, when the difference between the second cooling rate and the first cooling rate is smaller than or equal to the second preset rate difference, the heating plate 9 is controlled to continue to work in the heat preservation mode.
Illustratively, when the difference between the second cooling rate and the first cooling rate is greater than the second preset rate difference, it is indicated that the cooling of the heating plate 9 is too great, so that the pot body cannot be effectively insulated, and the working power of the heating plate 9 can be controlled by the controller 8.
Illustratively, when the second preset rate difference is 5 ℃/min, and the difference between the second cooling rate and the first cooling rate is greater than the second preset rate difference of 5 ℃/min, the operating power of the heat-generating disc 9 may be controlled by the controller 8.
For example, when the difference between the second cooling rate and the first cooling rate is less than or equal to the second preset rate difference, it is indicated that the cooling rate of the heating plate 9 is within a proper range, so that the pot body can be effectively insulated, and the heating plate 9 can be controlled to work in the insulation mode to keep the heating plate 9 insulated within a proper temperature range.
For example, when the second preset rate difference is 5 ℃/min, and the difference between the second cooling rate and the first cooling rate is less than or equal to the second preset rate difference of 5 ℃/min, the controller 8 can control the working power of the heating plate 9 to be kept, that is, control the heating plate 9 to continue working in the heat preservation mode, so as to realize heat preservation of the pot body.
It should be noted that, when detecting the relative difference between the second cooling rate and the first cooling rate, the first cooling rate can be detected, and whether the first cooling rate is within a predetermined cooling rate range is judged, so as to control the absolute temperature of the heat preservation process of the food in the pot body, and improve the heat preservation control effect of the food in the pot body.
The beneficial effects that above-mentioned realization mode brought lie in, and the difference of second cooling rate and first cooling rate is less than or equal to the second and presets the speed difference, and the temperature of dish and electric cooker that generates heat keeps basic synchronization, and the temperature that indicates the dish that generates heat keeps in the thermal-insulated within range, can control the dish that generates heat and work under the mode of keeping warm this moment continuously, realizes the heat preservation to food.
In some implementations, the method further includes: when working in the rice cooking mode, when the first temperature value reaches the first target temperature value, when the temperature difference value between the second temperature value and the first temperature value is larger than or equal to the preset temperature difference value, the heating plate 9 is controlled to stop working for a third time period, and when the temperature difference value between the second temperature value and the first temperature value is smaller than the preset temperature difference value, the heating plate 9 is restarted to work in the rice cooking mode again.
When the cooker works in the rice cooking mode, if the temperature of the heating plate 9 is too high, the heating plate 9 can be controlled to stop working for a period of time at the moment, so that the temperature of the heating plate 9 is controlled, and the cooking during rice cooking is avoided.
For example, after the first temperature value reaches the first target temperature value, a temperature difference between the second temperature value and the first temperature value may be detected, and it may be determined whether the temperature of the heat generating plate 9 is excessively high, based on this.
For example, the first target temperature value may be 100 ℃, the preset temperature difference value may be 8 ℃, when the detected second temperature value is 110 ℃ after the first temperature value reaches the first target temperature value 100 ℃, the difference value between the second temperature value and the first temperature value is 10 ℃ greater than the preset temperature difference value 8 ℃, and the heating plate 9 is controlled to stop working for a third period of time at the moment, so as to realize temperature reduction of the heating plate 9, and when the temperature difference value between the second temperature value and the first temperature value is less than the preset temperature difference value 10 ℃, the heating plate 9 is restarted to work in the rice cooking mode again, so that the phenomenon that rice is burnt can be avoided.
Illustratively, the third time period may be 30s.
Alternatively, the third period of time in which the heat generation panel 9 is stopped may be replaced with a decrease in power of the heat generation panel 9 to decrease the heat generation temperature of the heat generation panel 9.
The implementation mode has the beneficial effects that when the temperature difference between the second temperature value and the first temperature value is larger than or equal to the preset temperature difference, the fact that the temperature of the heating plate is too high at the moment is indicated, the heating plate is controlled to stop working for a third time period, the heating plate can be protected, and damage caused by the too high temperature of the heating plate can be avoided; the purpose of controlling the fire power can be achieved, and the burning of the pot can be avoided.
In some implementations, the method further includes: when the first temperature value is greater than or equal to the first preset temperature value and the second temperature value is greater than or equal to the second preset temperature value, the heating plate 9 is controlled to stop working, and the heating plate 9 or a driving circuit of the heating plate 9 is overhauled in a prompt mode.
When the heating plate 9 is used, the absolute temperature of the first temperature value and the absolute temperature of the second temperature value can be detected, so that the absolute temperature of the pot body and the absolute temperature of the heating plate can be detected, and the heating plate 9 can be overhauled and replaced.
For example, the first preset temperature value may be 97 ℃, the second preset temperature value may be 108 ℃, and if the first temperature value is greater than or equal to the first preset temperature value 97 ℃ and the second temperature value is greater than or equal to the second preset temperature value 108 ℃, the heating plate 9 may be controlled to stop working and prompt to overhaul the heating plate 9 or the driving circuit of the heating plate 9, so as to avoid the burning phenomenon caused by the overhigh temperature of the heating plate 9.
Alternatively, the control of the stop of the heat generating plate 9 may be replaced with the control of the power reduction of the heat generating plate 9 to reduce the heat generating temperature of the heat generating plate 9.
The beneficial effect that foretell realization mode brought lies in, through detecting the absolute temperature value of the pot body and the dish that generates heat, when the temperature value of the pot body and the dish that generates heat is all too high, overhauls the dish that generates heat, can avoid burning out effectively.
In some implementations, as shown in fig. 1, the second thermistor 32 may be plural in structure, and the plural second thermistors 32 are uniformly distributed on the bottom or the outer side wall of the holder 5.
Illustratively, 2 second thermistors 32 are provided on the fixing frame 5 in fig. 1, and the temperature of the heat-generating plate 9 can be detected more accurately by the second thermistors 32.
In some implementations, determining the second temperature value may be performed by: when the rice cooking mode is entered, a target second thermistor having a smallest difference between the temperature detection value of the plurality of second thermistors 32 and the temperature detection value of the first thermistor 31 is determined, and the temperature value detected by the target second thermistor is taken as a second temperature value.
In use, when the rice cooking mode is entered into the heat preservation mode, a target second thermistor having the smallest difference between the temperature detection value of the plurality of second thermistors 32 and the temperature detection value of the first thermistor 31 is determined, and the temperature value detected by the target second thermistor is taken as a second temperature value.
For example, when the electric cooker is switched from the rice cooking mode to the heat preservation mode, the actual temperature of the electric cooker and the actual temperature of the heating plate are the closest, so that the temperature detection value of the first thermistor 31 and the temperature detection values of the plurality of second thermistors 32 can be compared, and the second thermistor 32 with the closest temperature detection value of the plurality of second thermistors 32 and the temperature detection value of the first thermistor 31 is used as a source for detecting the temperature of the heating plate 9 in the subsequent temperature control, thereby realizing the efficient detection of the temperature of the heating plate 9.
For example, after determining a target second thermistor having the smallest difference between the temperature detection value of the plurality of second thermistors 32 and the temperature detection value of the first thermistor 31, the temperature value detected by the target second thermistor may be taken as the above-described second temperature value, thereby improving the temperature control effect on the heat generating disk 9.
The realization mode has the beneficial effects that the temperature control effect on the heating plate is improved by arranging the plurality of second thermistors and determining the second thermistor with the most accurate detection temperature.
The implementation manner has the beneficial effects that when one of the plurality of second thermistors is damaged, the target second thermistor with the smallest difference between the temperature detection value of the second thermistors and the temperature detection value of the first thermistor can be continuously determined in the plurality of second thermistors, so that the effective detection of the temperature of the heating disc 9 is realized, and the robustness of the temperature sensor in use is improved.
In some implementations, the method further includes: when the rice cooking mode is switched into the heat preservation mode, when the difference value between the temperature detection values of all the second thermistors 32 and the temperature detection value of the first thermistors 31 is larger than the temperature difference threshold value, the maintenance of all the second thermistors 32 is prompted, and the heating plate 9 is controlled to stop working.
When there are a plurality of second thermistors 32, the accuracy of the temperature detection of all the second thermistors 32 can be judged by judging the difference value of the temperature detection values of all the second thermistors 32 and the first thermistors 31, and if the temperature detection of all the second thermistors 32 is inaccurate, the maintenance of all the second thermistors 32 can be prompted and the heating plate 9 is controlled to stop working.
For example, the temperature difference threshold may be 10 ℃, and when the temperature detection value of all the second thermistors 32 and the temperature detection value of the first thermistor 31 are greater than the temperature difference threshold by 10 ℃ when the rice cooking mode is switched to the heat preservation mode, the maintenance of all the second thermistors 32 is prompted and the heat generation panel 9 is controlled to stop operating.
The implementation mode has the beneficial effects that the accuracy of the detection values of all the second thermistors can be judged, and when the temperature detection values of all the second thermistors and the first thermistors are too large, all the second thermistors can be overhauled, so that the effect of controlling the temperature of the heating product is improved.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (6)
1. The temperature monitoring control method is characterized in that a temperature sensor for electric cooker temperature monitoring is used for monitoring the temperature of an electric cooker and comprises a metal cover (1), a heat conducting sheet (2), a first thermistor (31), a second thermistor (32), a thermal fuse (4) and a fixing frame (5), wherein the metal cover (1) is fixedly connected to the fixing frame (5), the heat conducting sheet (2) is abutted to the inner side wall of the top of the metal cover (1), and the first thermistor (31) and the thermal fuse (4) are in heat conducting connection with the heat conducting sheet (2); the fixing frame (5) is made of insulating materials, the fixing frame (5) surrounds the first thermistor (31) and the wiring terminal of the thermal fuse (4), the second thermistor (32) is connected to the bottom or the outer side wall of the fixing frame (5), the first thermistor (31) is used for detecting the temperature of the pot body of the electric pot, and the second thermistor (32) is used for detecting the temperature of the heating disc of the electric pot;
The temperature sensor for monitoring the temperature of the electric cooker further comprises a heat-conducting silica gel sheet (6), wherein a positioning groove (21) is formed in the heat-conducting sheet (2), the first thermistor (31) and the thermal fuse (4) are embedded in the positioning groove (21), the heat-conducting silica gel sheet (6) is fixedly connected with the first thermistor (31) and the thermal fuse (4) in a sticking mode on the positioning groove (21), and the heat-conducting silica gel sheet (6) is fixedly connected in the fixing frame (5); an opening part (51) forming an opening is formed on the side wall of the fixing frame (5), the heat conduction silica gel sheet (6) extends into the opening part (51), the second thermistor (32) is arranged in the opening part (51) and is abutted against the heat conduction silica gel sheet (6), and an arched heat conductor (321) matched with the electric cooker heating disc is sleeved outside the second thermistor (32); the fixing frame (5) is fixedly connected to the metal bracket (7), the metal bracket (7) is connected with a ground wire, and the second thermistor (32) is fixedly connected to the metal bracket (7);
the controller (8) of the electric cooker is respectively electrically connected with the first thermistor (31) and the second thermistor (32), and the controller (8) of the electric cooker is also electrically connected with a heating disc (9), and the method comprises the following steps:
When working in the rice cooking mode, acquiring a first temperature value of the first thermistor (31) and acquiring a second temperature value of the second thermistor (32);
Determining a first temperature rising rate detected by a first thermistor (31) and a second temperature rising rate detected by a second thermistor (32) in a first preset time period from the start of heating by electrifying a heating plate (9);
When the difference value of the first heating rate and the second heating rate is larger than or equal to the first preset rate difference value, the controller (8) controls the heating plate (9) to be electrified to work continuously in the rice cooking mode.
2. The temperature monitoring control method of claim 1, wherein the method further comprises:
When working in a rice cooking mode, acquiring a first temperature value detected by the first thermistor (31) and acquiring a second temperature value detected by the second thermistor (32);
Determining a first temperature rising rate detected by a first thermistor (31) and a second temperature rising rate detected by a second thermistor (32) in a first preset time period from the start of heating by electrifying a heating plate (9);
When the difference value of the first heating rate and the second heating rate is smaller than the first preset rate difference value, the controller (8) controls the heating plate (9) to be powered off and stop working for a first time period;
after the first time period, the controller (8) controls the heating plate (9) to be electrified to start working in the rice cooking mode for a second time period.
3. The temperature monitoring control method according to claim 2, characterized in that the method further comprises:
When the second heating rate is smaller than the first preset rate, the controller (8) prompts maintenance of the heating disc (9) and controls the heating disc (9) to stop working when power is off.
4. A temperature monitoring control method according to claim 3, wherein the method further comprises:
When the temperature sensor works in the heat preservation mode, a first temperature value detected by the first thermistor (31) is obtained, and a second temperature value detected by the second thermistor (32) is obtained;
determining a first cooling rate detected by the first thermistor (31) and a second cooling rate detected by the second thermistor (32) in a second preset time period when the heating plate (9) is powered off and stops heating;
When the difference value of the second cooling rate and the first cooling rate is smaller than or equal to the second preset rate difference value, the heating plate (9) is controlled to continue to work in the heat preservation mode.
5. The temperature monitoring control method of claim 4, wherein the method further comprises:
When the heating plate works in the rice cooking mode, when the first temperature value reaches the first target temperature value, when the temperature difference value between the second temperature value and the first temperature value is larger than or equal to the preset temperature difference value, the heating plate (9) is controlled to stop working for a third time period, and when the temperature difference value between the second temperature value and the first temperature value is smaller than the preset temperature difference value, the heating plate (9) is restarted to work in the rice cooking mode again.
6. The temperature monitoring control method of claim 5, further comprising:
When the first temperature value is greater than or equal to a first preset temperature value and the second temperature value is greater than or equal to a second preset temperature value, the heating plate (9) is controlled to stop working, and the heating plate (9) or a driving circuit of the heating plate (9) is overhauled in a prompt mode.
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| CN113324263A (en) * | 2020-02-28 | 2021-08-31 | 青岛海尔智能技术研发有限公司 | Control method and control device for kitchen range and kitchen range |
| CN111904290B (en) * | 2020-07-23 | 2023-06-06 | 九阳股份有限公司 | Cooking control method of heating disc type cooking machine and cooking machine |
| CN113017401A (en) * | 2021-03-26 | 2021-06-25 | 珠海格力电器股份有限公司 | Electric cooker, rice control method and device and storage medium |
| CN114568951B (en) * | 2022-01-12 | 2023-07-21 | 佛山市顺德区美的电热电器制造有限公司 | Control method and control device of cooking utensil, controller and cooking utensil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN213309141U (en) * | 2020-07-08 | 2021-06-01 | 九阳股份有限公司 | Cooking machine |
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