CN102613879B - Electric cooking appliance with high-precision temperature measuring device - Google Patents
Electric cooking appliance with high-precision temperature measuring device Download PDFInfo
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- CN102613879B CN102613879B CN201210091922.9A CN201210091922A CN102613879B CN 102613879 B CN102613879 B CN 102613879B CN 201210091922 A CN201210091922 A CN 201210091922A CN 102613879 B CN102613879 B CN 102613879B
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- 238000010411 cooking Methods 0.000 title claims description 50
- 239000000463 material Substances 0.000 claims abstract description 84
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000010408 film Substances 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention relates to an electric cooker with a high-precision temperature measuring device, which comprises a cooker body, a cooker cover for covering the cooker body, a heating body positioned below the cooker body and the high-precision temperature measuring device arranged on the electric cooker, wherein the high-precision temperature measuring device comprises a bridge circuit, an amplifying circuit electrically connected with the bridge circuit and a processor electrically connected with the amplifying circuit, the bridge circuit comprises a thermistor, the high-precision temperature measuring device also comprises a base material, and the thermistor is arranged on the base material. The invention has the beneficial effects that: the temperature of the electric cooker can be accurately measured. The invention also relates to a control method of the heating body of the electric cooker.
Description
Technical field
The present invention relates to a kind of electric cooking appliance with high-accuracy TME.
Background technology
Electric cooking appliance is in the market as a large amount of the popularizing in huge numbers of families of a kind of mess kit, as electric pressure cooking saucepan, electromagnetic oven etc.For reaching good culinary art effect, conventionally need temperature measuring equipment to detect the temperature in pot, then according to the temperature collecting, realize the control to electric cooking appliance.But the sensitivity of its temperature-sensitive of temperature measuring equipment of electric cooking appliance is in the market generally poor, conventionally its thermometric lag time is generally more than 15 seconds, can not fast detecting arrive kettle temperature, due to the serious hysteresis quality of its detected temperatures, temperature value be detected and differ larger with the actual temperature value in pot.In order to carry out the control to electric cooking appliance according to the actual temperature value in pot, conventionally by the setting of program, a kind of method is: after the temperature value detecting is increased to certain amount, think the actual temperature value in pot, carry out again electric cooking appliance to control, but when the quantity of food of boiling is different, the temperature value detecting is also different from the difference of actual temperature value in pot, therefore, by this program setting, still cannot solve the accurate control to electric cooking appliance; Another kind method is: the temperature detecting at checkout gear reaches after certain value, electric cooking appliance stops heating, waits for a period of time, and waits for after checkout gear detects the actual temperature in pot and carries out electric cooking appliance to add thermal control again, by this method, if after waiting for a period of time, still do not reach the temperature of setting, need to heat again, and then wait for a period of time, this method is taken electricity, program is complicated, and need to repeatedly wait for, thereby directly affects food cooking effect.
Summary of the invention
The object of the present invention is to provide a kind of electric cooking appliance with high-accuracy TME.
For reaching goal of the invention the technical solution used in the present invention, be: a kind of electric cooking appliance with high-accuracy TME, comprise a pot body, cover described pot body pot cover, be positioned at a pot calandria for body below, be arranged on the high-accuracy TME on described electric cooking appliance, described high-accuracy TME comprises bridge circuit, the amplifying circuit being electrically connected to bridge circuit, the processor being electrically connected to described amplifying circuit, described bridge circuit comprises thermistor, described high-accuracy TME also comprises base material, and described thermistor is arranged on described base material.
Further, described amplifying circuit comprises resistance, and the resistance of described amplifying circuit is arranged on described base material.
Further, described high-accuracy TME also comprises pcb board, and described processor is arranged on described pcb board, and described base material is arranged on described pcb board.
Further, described base material by plug-in mounting, be welded or wire is connected electrically on described pcb board.
Further, described base material is arranged on described pot cover.
Further, described high-accuracy TME also comprises pcb board, described processor is arranged on described pcb board, described base material comprises the first base material part and the second base material part, described thermistor is arranged on described the first base material part, and the resistance of described amplifying circuit is arranged on described the second base material part.
Further, described the second base material part by plug-in mounting, be welded or wire is connected electrically on described pcb board, or be integrally formed with pcb board, described the first base material part is electrically connected to the second base material part by wire.
Further, described the first base material part is arranged on described pot cover.
Further, described high-accuracy TME also comprises pcb board, and described processor is arranged on described pcb board, and described base material and pcb board are integrally formed.
Further, described base material and pcb board are arranged on described pot cover.
Further, the circuit being arranged on described base material is to be printed on described base material by thick-film technique or thin-film technique.
Further, the circuit being arranged on described base material is coated with insulating protective layer, and described base material is non-metallic substrate.
Further, the circuit being arranged on described base material is coated with insulating protective layer, and described base material is Metal Substrate
Material, is printed between circuit on described base material and metal base and is provided with insulating barrier.
Further, the resistance being arranged on described base material is the resistance after overmatching trims.
Further, described electric cooking appliance is electric pressure cooking saucepan.
The present invention also provides a kind of control method of calandria of electric cooking appliance.
The electric cooking appliance with high-accuracy TME of the present invention, can realize accurate thermometric.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the high-accuracy TME of the present invention's electric cooking appliance with high-accuracy TME.
Fig. 2 is the distribution schematic diagram of the high-accuracy TME of the present invention's electric cooking appliance with high-accuracy TME.
Fig. 3 is the layering schematic diagram of the high-accuracy TME of the present invention's electric cooking appliance with high-accuracy TME.
Fig. 4 is the second embodiment of the high-accuracy TME of the present invention's electric cooking appliance with high-accuracy TME.
Fig. 5 is the application schematic diagram of high-accuracy TME of the present invention.
Fig. 6 is the schematic diagram that the present invention has the electric cooking appliance of high-accuracy TME.
Fig. 7 is the enlarged drawing at A place in Fig. 6.
Fig. 8 is the control flow chart of the calandria of the present invention's electric cooking appliance with high-accuracy TME.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further described, but does not limit the invention to these specific embodiment.One skilled in the art would recognize that the present invention contained all alternatives, improvement project and the equivalents that within the scope of claims, may comprise.
As shown in Figure 1, the present invention has the circuit diagram of high-accuracy TME of the electric cooking appliance of high-accuracy TME.The high precision measuring temperature circuit that the present invention has the electric cooking appliance of high-accuracy TME comprises that bridge circuit 1, amplifying circuit 2, processor 3, amplifying circuit 2 are electrically connected to bridge circuit 1, and processor 3 is electrically connected to amplifying circuit 2. bridge circuit 1 comprises thermistor 6.When thermistor 6 is experienced variations in temperature, its resistance changes, now bridge circuit 1 occurs uneven, and output difference mode voltage signal, differential mode voltage signal is input to amplifying circuit 2, after signal amplifies, output is changed through A/D, and realizes the detection of temperature and control by processor 3.
As shown in Figure 2, the present invention has the distribution schematic diagram of high-accuracy TME of the electric cooking appliance of high-accuracy TME.High-accuracy TME of the present invention comprises base material 4, pcb board 5, and processor 3 is arranged on pcb board 5, and bridge circuit 1 is arranged on base material 4, and amplifying circuit 2 comprises resistance.Because base material is sheet form, its capacity of heat transmission improves a lot than the heat-transfer rate of existing NTC encapsulation, make its reaction sensitiveer, thereby can realize high precision measuring temperature.By the resistance on base material 4, carry out laser resistance and trim, improved the initial resistance accuracy of resistance in bridge circuit 1, reduced resistance initial value error, thus the temperature measurement accuracy greatly improving.In addition, the resistance of amplifying circuit 2 is preferably also arranged on base material 4, can to the resistance of resistance in amplifying circuit, trim so simultaneously, by all resistance on base material 4, mate to trim and can greatly improve the signal accuracy in circuit, thereby realize further accurate thermometric, coupling trims and can adopt laser high-precision coupling to trim.Base material 4 also can be by plug-in mounting, be welded or wire is connected electrically on pcb board 5, and the mode being electrically connected to by wire can realize and as required base material 4 is installed to suitable temperature detection position, on pot cover 102.As shown in Fig. 2,5, base material 4 preferably includes the first base material part 7 and the second base material part 8, and thermistor 6 is arranged on the first base material part 7, and the resistance of amplifying circuit is arranged on the second base material part 8.After overmatching trims, the first base material part 7 and the second base material part 8 can separate, the second base material part 8 can plug-in mounting or is welded or wire is connected electrically on described pcb board, the first base material part 7 by plug-in mounting, be welded or wire is connected electrically on the second base material part 8.By which, can realize and as required the different piece of base material 4 is installed to the position that needs installation, such as, the first base material part 7 is arranged on the position that needs thermometric, as the first base material part 7 of base material 4 is arranged on pot cover 102, the second base material part 8 and pcb board 5 are installed on shell 103, have greatly improved the free degree of installing.In addition, the resistance on base material 4 is preferably printed on base material.Base material 4 can be to be also integrally formed with pcb board, after coupling trims, the first base material part 7 is separated from base material 4, and by plug-in mounting, be welded or wire is connected electrically on the second base material part 8, equally, the first base material part 7 can be installed to suitable position as required, on pot cover 102.Integral body and the pcb board that can be also base material 4 are integrally formed.In addition, on base material 4, resistance can be only installed, and other circuit parts in bridge circuit 1 and amplifying circuit 2 are arranged on pcb board.In addition the circuit or the resistance that are arranged on base material 4, can be to be printed on base material 4 by thick-film technique or thin-film technique.
As shown in Figure 3; the base material 4 of high-accuracy TME that the present invention has the electric cooking appliance of high-accuracy TME is metal base; be printed between circuit on metal base 4 and metal base 4 and be provided with insulating barrier 9, on the circuit on metal base 4, be coated with insulating protective layer 10.
As shown in Figure 4, the present invention has the second embodiment of high-accuracy TME of the electric cooking appliance of high-accuracy TME.The base material of invention high-accuracy TME is non-metallic substrate 11, and the circuit being arranged on non-metallic substrate 11 is coated with insulating protective layer 12.
As shown in Figure 6, the electric cooking appliance 100 that the present invention has high-accuracy TME comprises pot body 101, pot cover 102, shell 103, calandria 109, and pot cover 102 covers on pot body 101, and pot body 101 is placed in shell 103, and calandria 109 is positioned at the below of pot body 101.Substrate 4 is arranged on pot cover 102, and pcb board 5 is arranged on shell 103, and substrate 4 is electrically connected to PCB by wire 107,108.As shown in Figure 7, substrate 4 is fixed on substrate 4 on pot cover 102 by body 104, top nut 106 and lower nut 105 through pot cover 102.The mode that substrate 4 is installed on pot cover 102 has a variety of, because mounting means is not emphasis of the present invention, at this, be not described in detail. in addition, the electric cooking appliance that the present invention has high-accuracy TME can be electric pressure cooking saucepan, can be also other electric cooking appliances such as electromagnetic oven.
As shown in Figure 8, shown and controlled the flow chart that the present invention has the electric cooking appliance 100 of high-accuracy TME.During electric cooking appliance 100 work, 109 pairs of pot bodies 101 of calandria heat, high-accuracy TME detects the temperature value in pot body 101 and temperature signal is passed to processor 3, processor 3 receives these temperature signals and at once the corresponding temperature value of the temperature signal receiving and pre-stored temperature value is compared, when the temperature value receiving is more than or equal to pre-stored temperature value, described processor 3 cuts off the heating of calandria 109.The high-accuracy TME using due to the present invention is temperature-sensitive fast, thereby temperature and actual temperature in the pot body 101 detecting are very approaching, can realize fast the control to pot body 101 interior temperature, and it is fine to cook effect.
Claims (10)
1. an electric cooking appliance with high-accuracy TME, comprise a pot body, cover the pot cover of described pot body, be positioned at a pot calandria for body below, be arranged on the high-accuracy TME on described electric cooking appliance, it is characterized in that, described high-accuracy TME comprises bridge circuit, the amplifying circuit being electrically connected to bridge circuit, the processor being electrically connected to described amplifying circuit, described bridge circuit comprises thermistor, described high-accuracy TME also comprises base material, described base material comprises the first base material part and the second base material part, described thermistor is arranged on described the first base material part, the resistance of described amplifying circuit is arranged on described the second base material part, described the first base material part and described the second base material part physical separation, described the first base material part is electrically connected to the second base material part.
2. the electric cooking appliance with high-accuracy TME according to claim 1, is characterized in that: described high-accuracy TME also comprises pcb board, and described processor is arranged on described pcb board.
3. the electric cooking appliance with high-accuracy TME according to claim 2, is characterized in that: described the second base material part by plug-in mounting, be welded or wire is connected electrically on described pcb board, or be integrally formed with pcb board.
4. the electric cooking appliance with high-accuracy TME according to claim 3, is characterized in that: described the first base material part is arranged on described pot cover.
5. according to the electric cooking appliance with high-accuracy TME described in claim 1-4 any one, it is characterized in that: the circuit being arranged on described base material is to be printed on described base material by thick-film technique or thin-film technique.
6. the electric cooking appliance with high-accuracy TME according to claim 5, is characterized in that: the circuit being arranged on described base material is coated with insulating protective layer, and described base material is non-metallic substrate.
7. the electric cooking appliance with high-accuracy TME according to claim 5; it is characterized in that: the circuit being arranged on described base material is coated with insulating protective layer; described base material is metal base, is printed between circuit on described base material and metal base and is provided with insulating barrier.
8. the electric cooking appliance with high-accuracy TME according to claim 5, is characterized in that: the resistance being arranged on described base material is the resistance after overmatching trims.
9. the electric cooking appliance with high-accuracy TME according to claim 5, is characterized in that: described electric cooking appliance is electric pressure cooking saucepan.
10. a method of controlling the electric cooking appliance calandria heating with high-accuracy TME described in claim 1, is characterized in that, comprises the following steps:
Step 1, high-accuracy TME detects the temperature value in pot body;
Step 2, processor receives the temperature signal that represents described temperature value;
Step 3, processor compares receiving the corresponding temperature value of temperature signal and pre-stored temperature value, and when the temperature value receiving is more than or equal to pre-stored temperature value, described processor cuts off the heating of calandria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091922.9A CN102613879B (en) | 2012-01-13 | 2012-03-30 | Electric cooking appliance with high-precision temperature measuring device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011547.2 | 2012-01-13 | ||
| CN201210011547 | 2012-01-13 | ||
| CN201210091922.9A CN102613879B (en) | 2012-01-13 | 2012-03-30 | Electric cooking appliance with high-precision temperature measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102613879A CN102613879A (en) | 2012-08-01 |
| CN102613879B true CN102613879B (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210091922.9A Active CN102613879B (en) | 2012-01-13 | 2012-03-30 | Electric cooking appliance with high-precision temperature measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102613879B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017715A (en) * | 1975-08-04 | 1977-04-12 | Raychem Corporation | Temperature overshoot heater |
| JP2503729B2 (en) * | 1990-06-18 | 1996-06-05 | 株式会社村田製作所 | Planar heating element |
| CN2246477Y (en) * | 1995-03-02 | 1997-02-05 | 北京爱普亚太电子有限公司 | Computer controller for fuzzy controlling electric rice cooker |
| CN2456428Y (en) * | 2000-12-28 | 2001-10-24 | 曹正尚 | Constant thermal apparatus |
| CN200993608Y (en) * | 2006-12-25 | 2007-12-19 | 山东科技大学 | High-precision temperature-measuring device |
| CN101317734A (en) * | 2008-07-03 | 2008-12-10 | 宁波大学 | Electric chafing dish with constant temperature function and constant temperature control method of the electric chafing dish |
| CN201348905Y (en) * | 2009-01-19 | 2009-11-18 | 深圳市振华微电子有限公司 | Temperature-measurable resistor |
| CN202636574U (en) * | 2012-01-13 | 2013-01-02 | 浙江绍兴苏泊尔生活电器有限公司 | Electric cooking appliance with high-precision temperature measuring device |
-
2012
- 2012-03-30 CN CN201210091922.9A patent/CN102613879B/en active Active
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| Publication number | Publication date |
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| CN102613879A (en) | 2012-08-01 |
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