CN102613879A - 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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- CN102613879A CN102613879A CN2012100919229A CN201210091922A CN102613879A CN 102613879 A CN102613879 A CN 102613879A CN 2012100919229 A CN2012100919229 A CN 2012100919229A CN 201210091922 A CN201210091922 A CN 201210091922A CN 102613879 A CN102613879 A CN 102613879A
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- precision measuring
- measuring temperature
- cooking appliance
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- 238000010411 cooking Methods 0.000 title claims description 56
- 239000000463 material Substances 0.000 claims abstract description 89
- 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
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 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
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000009835 boiling Methods 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 precision measuring temperature device.
Background technology
Electric cooking appliance in the market is as a large amount of the popularizing in huge numbers of families of a kind of mess kit, like electric pressure cooking saucepan, electromagnetic oven etc.Cook effect preferably for reaching, need temperature measuring equipment to detect the temperature in the pot usually, realize control according to the temperature that collects then electric cooking appliance.But the sensitivity of its temperature-sensitive of temperature measuring equipment of electric cooking appliance in the market is generally relatively poor; Usually its thermometric lag time is generally more than 15 seconds; Can not fast detecting arrive kettle temperature, because the serious hysteresis quality of its detected temperatures detects temperature value and differs bigger with the interior actual temperature value of pot.In order to carry out control according to the actual temperature value in the pot to electric cooking appliance; Usually through the setting of program, a kind of method is: think the actual temperature value in the pot after detected temperature value is increased certain amount, carry out electric cooking appliance is controlled again; But when the quantity of food of boiling not simultaneously; Detected temperature value is also different with pot difference of interior actual temperature value, therefore, still can't solve the accurate control to electric cooking appliance through this program setting; Another kind method is: after the temperature that checkout gear detects reached certain value, electric cooking appliance stopped heating, waits for a period of time; Wait for after checkout gear detects the actual temperature in the pot and carry out again electric cooking appliance is added thermal control, by this method, if after waiting for a period of time; Still do not reach the temperature of setting, need heat again, and then wait for a period of time; This method is taken electricity, program is complicated, and needs to wait for repeatedly, thereby directly influences the food cooking effect.
Summary of the invention
The object of the present invention is to provide a kind of electric cooking appliance with high precision measuring temperature device.
For the technical scheme that reaches goal of the invention the present invention employing is: a kind of electric cooking appliance with high precision measuring temperature device; Comprise a pot body, cover said pot body pot cover, be positioned at pot calandria of body below, be installed in the high precision measuring temperature device on the said electric cooking appliance; Said high precision measuring temperature device comprises bridge circuit, the amplifying circuit that is electrically connected with bridge circuit, the processor that is electrically connected with said amplifying circuit; Said bridge circuit comprises thermistor; Said high precision measuring temperature device also comprises base material, and said thermistor is installed on the said base material.
Further, said amplifying circuit comprises resistance, and the resistance of said amplifying circuit is installed on the said base material.
Further, said high precision measuring temperature device also comprises pcb board, and said processor is installed on the said pcb board, and said base material is installed on the said pcb board.
Further, said base material through plug-in mounting, be welded or lead is connected electrically on the said pcb board.
Further, said base material is installed on the said pot cover.
Further; Said high precision measuring temperature device also comprises pcb board; Said processor is installed on the said pcb board; Said base material comprises first base material part and second base material part, and said thermistor is installed in said first base material part, and the resistance of said amplifying circuit is installed in said second base material part.
Further, said second base material part through plug-in mounting, be welded or lead is connected electrically on the said pcb board, or integrally formed with pcb board, said first base material part is electrically connected with second base material part through lead.
Further, said first base material part is installed on the said pot cover.
Further, said high precision measuring temperature device also comprises pcb board, and said processor is installed on the said pcb board, and said base material and pcb board are integrally formed.
Further, said base material and pcb board are installed on the said pot cover.
Further, the circuit that is installed on the said base material is to be printed on the said base material through thick-film technique or thin-film technique.
Further, the circuit that is installed on the said base material is coated with insulating protective layer, and said base material is a non-metallic substrate.
Further, the circuit that is installed on the said base material is coated with insulating protective layer, and said base material is a Metal Substrate
Material is printed between circuit and the metal base on the said base material and is provided with insulating barrier.
Further, the resistance that is installed on the said base material is the resistance after accent is repaiied in overmatching.
Further, said electric cooking appliance is an electric pressure cooking saucepan.
The present invention also provides a kind of control method of calandria of electric cooking appliance.
Electric cooking appliance with high precision measuring temperature device of the present invention can be realized accurate thermometric.
Description of drawings
Fig. 1 is the high precision measuring temperature manipulated or operated apparatus of the electric cooking appliance of the present invention with high precision measuring temperature device.
Fig. 2 is the distribution schematic diagram of the high precision measuring temperature device of the electric cooking appliance of the present invention with high precision measuring temperature device.
Fig. 3 is the layering sketch map of the high precision measuring temperature device of the electric cooking appliance of the present invention with high precision measuring temperature device.
Fig. 4 is second kind of embodiment of the high precision measuring temperature device of the electric cooking appliance of the present invention with high precision measuring temperature device.
Fig. 5 is the application sketch map of high precision measuring temperature device of the present invention.
Fig. 6 is the sketch map that the present invention has the electric cooking appliance of high precision measuring temperature device.
Fig. 7 is the enlarged drawing at A place among Fig. 6.
Fig. 8 is the control flow chart of the calandria of the electric cooking appliance of the present invention with high precision measuring temperature device.
The specific embodiment
Come the present invention is further specified below in conjunction with specific embodiment, but do not limit the invention to these specific embodiment.One skilled in the art would recognize that the present invention contained in claims scope all alternatives, improvement project and the equivalents that possibly comprise.
As shown in Figure 1, the present invention has the high precision measuring temperature manipulated or operated apparatus of the electric cooking appliance of high precision measuring temperature device.The high precision measuring temperature circuit that the present invention has the electric cooking appliance of high precision measuring temperature device comprises that bridge circuit 1, amplifying circuit 2, processor 3, amplifying circuit 2 are electrically connected with bridge circuit 1, and processor 3 is electrically connected with amplifying circuit 2. bridge circuit 1 comprises thermistor 6.When thermistor 6 is experienced variations in temperature; Its resistance changes; This moment, bridge circuit 1 generation was uneven, and output differential mode voltage signal, and the differential mode voltage signal is input to amplifying circuit 2; Signal amplifies back output through the A/D conversion, and realizes detection and control to temperature through processor 3.
As shown in Figure 2, the present invention has the distribution schematic diagram of high precision measuring temperature device of the electric cooking appliance of high precision measuring temperature device.High precision measuring temperature device of the present invention comprises base material 4, pcb board 5, and processor 3 is installed on the pcb board 5, and bridge circuit 1 is installed on the base material 4, and amplifying circuit 2 comprises resistance.Because base material is a sheet form, its capacity of heat transmission improves much than the heat-transfer rate of existing NTC encapsulation, makes its reaction sensitive more, thereby can realize high precision measuring temperature.Repair accent through the resistance on the base material 4 is carried out the laser resistance, improved the initial resistance accuracy of resistance in the bridge circuit 1, reduced resistance initial value error, thus the temperature measurement accuracy that improves greatly.In addition; The resistance of amplifying circuit 2 preferably also is installed on the base material 4; Can repair accent to the resistance of resistance in the amplifying circuit simultaneously like this; Repair accent and can improve the signal accuracy in the circuit greatly through all resistance on the base material 4 are mated, thereby realize accurate thermometric further, coupling is repaiied accent and can be adopted the laser high-precision coupling to repair accent.Base material 4 also can be through plug-in mounting, be welded or lead is connected electrically on the pcb board 5, and the mode that is electrically connected through lead can realize as required base material 4 being installed to suitable temperature detection position, on pot cover 102.Like Fig. 2, shown in 5, base material 4 preferably includes first base material part 7 and second base material part 8, and thermistor 6 is installed on first base material part 7, and the resistance of amplifying circuit is installed on second base material part 8.After accent is repaiied in overmatching; First base material part 7 and second base material part 8 can separate; Second base material part 8 can plug-in mounting or is welded or lead is connected electrically on the said pcb board, first base material part 7 through plug-in mounting, be welded or lead is connected electrically on second base material part 8.Can realize as required the different piece of base material 4 being installed to the position of needs installation through this mode; Such as; First base material part 7 is installed in the position that needs thermometric; First base material part 7 as with base material 4 is installed on the pot cover 102, and second base material part 8 is installed on the shell 103 with pcb board 5, has improved the free degree of installing greatly.In addition, the resistance on the base material 4 preferably is printed on the base material.Base material 4 also can be integrally formed with pcb board, after coupling is repaiied accent, first base material part 7 is separated from base material 4; And through plug-in mounting, be welded or lead is connected electrically on second base material part 8; Equally, first base material part 7 can be installed to suitable position as required, on pot cover 102.The integral body and the pcb board that also can be base material 4 are integrally formed.In addition, on the base material 4 resistance can only be installed, and other circuit parts in bridge circuit 1 and the amplifying circuit 2 are installed on the pcb board.In addition, the circuit or the resistance that are installed on the base material 4 can be to be printed on the base material 4 through thick-film technique or thin-film technique.
As shown in Figure 3; The base material 4 of high precision measuring temperature device that the present invention has the electric cooking appliance of high precision measuring temperature device is metal base; Be printed between circuit and the metal base 4 on the metal base 4 and be provided with insulating barrier 9, on the circuit on the metal base 4, be coated with insulating protective layer 10.
As shown in Figure 4, the present invention has second kind of embodiment of high precision measuring temperature device of the electric cooking appliance of high precision measuring temperature device.The base material of invention high precision measuring temperature device is a non-metallic substrate 11, and the circuit that is installed on the 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 the high precision measuring temperature device 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 the shell 103, and calandria 109 is positioned at the below of pot body 101.Substrate 4 is installed on the pot cover 102, and pcb board 5 is installed on the shell 103, and substrate 4 is electrically connected with PCB through lead 107,108.As shown in Figure 7, substrate 4 is fixed on substrate 4 on the pot cover 102 through body 104, top nut 106 and the lower nut 105 that passes pot cover 102.The mode that substrate 4 is installed on the pot cover 102 has a variety of; Because mounting means is not an emphasis of the present invention; Be not described in detail at this. in addition, the electric cooking appliance that the present invention has the high precision measuring temperature device can be an electric pressure cooking saucepan, also can be other electric cooking appliances such as electromagnetic oven.
As shown in Figure 8, shown that control the present invention has the flow chart of the electric cooking appliance 100 of high precision measuring temperature device.During electric cooking appliance 100 work; 109 pairs of pot bodies 101 of calandria heat; The high precision measuring temperature device detects the temperature value in the pot body 101 and temperature signal is passed to processor 3; Processor 3 receives these temperature signals and at once the temperature value of the pairing temperature value of the temperature signal that receives with storage is in advance compared, and when the temperature value that receives during more than or equal to the temperature value of storage in advance, said processor 3 cuts off the heating of calandrias 109.Because the high precision measuring temperature device that the present invention uses is temperature-sensitive fast, thereby temperature and actual temperature in the pot body 101 that detects are very approaching, can Rapid Realization to pot body 101 interior temperature controlling, and it is fine to cook effect.
Claims (16)
1. electric cooking appliance with high precision measuring temperature device; Comprise a pot body, cover said pot body pot cover, be positioned at pot calandria of body below, be installed in the high precision measuring temperature device on the said electric cooking appliance; It is characterized in that; Said high precision measuring temperature device comprises bridge circuit, the amplifying circuit that is electrically connected with bridge circuit, the processor that is electrically connected with said amplifying circuit; Said bridge circuit comprises thermistor, and said high precision measuring temperature device also comprises base material, and said thermistor is installed on the said base material.
2. the electric cooking appliance with high precision measuring temperature device according to claim 1 is characterized in that: said amplifying circuit comprises resistance, and the resistance of said amplifying circuit is installed on the said base material.
3. the electric cooking appliance with high precision measuring temperature device according to claim 2 is characterized in that: said high precision measuring temperature device also comprises pcb board, and said processor is installed on the said pcb board, and said base material is installed on the said pcb board.
4. the electric cooking appliance with high precision measuring temperature device according to claim 3 is characterized in that: said base material through plug-in mounting, be welded or lead is connected electrically on the said pcb board.
5. the electric cooking appliance with high precision measuring temperature device according to claim 4 is characterized in that: said base material is installed on the said pot cover.
6. the electric cooking appliance with high precision measuring temperature device according to claim 3; It is characterized in that: said high precision measuring temperature device also comprises pcb board; Said processor is installed on the said pcb board; Said base material comprises first base material part and second base material part, and said thermistor is installed in said first base material part, and the resistance of said amplifying circuit is installed in said second base material part.
7. the electric cooking appliance with high precision measuring temperature device according to claim 6; It is characterized in that: said second base material part through plug-in mounting, be welded or lead is connected electrically on the said pcb board; Or integrally formed with pcb board, said first base material part is electrically connected with second base material part through lead.
8. the electric cooking appliance with high precision measuring temperature device according to claim 7 is characterized in that: said first base material part is installed on the said pot cover.
9. the electric cooking appliance with high precision measuring temperature device according to claim 3 is characterized in that: said high precision measuring temperature device also comprises pcb board, and said processor is installed on the said pcb board, and said base material and pcb board are integrally formed.
10. the electric cooking appliance with high precision measuring temperature device according to claim 3 is characterized in that: said base material and pcb board are installed on the said pot cover.
11. according to any described electric cooking appliance with high precision measuring temperature device of claim 3-10, it is characterized in that: the circuit that is installed on the said base material is to be printed on the said base material through thick-film technique or thin-film technique.
12. the electric cooking appliance with high precision measuring temperature device according to claim 11 is characterized in that: the circuit that is installed on the said base material is coated with insulating protective layer, said base material is a non-metallic substrate.
13. the electric cooking appliance with high precision measuring temperature device according to claim 11; It is characterized in that: the circuit that is installed on the said base material is coated with insulating protective layer; Said base material is a metal base, is printed between circuit and the metal base on the said base material and is provided with insulating barrier.
14. according to any described electric cooking appliance with high precision measuring temperature device of claim 3-10, it is characterized in that: the resistance that is installed on the said base material is the resistance after accent is repaiied in overmatching.
15. according to any described electric cooking appliance with high precision measuring temperature device of claim 3-10, it is characterized in that: said electric cooking appliance is an electric pressure cooking saucepan.
16. control the described method of claim 1 for one kind with electric cooking appliance calandria heating of high precision measuring temperature device, it is characterized in that, comprise the following steps:
Step 1, high precision measuring temperature device detect the temperature value in the pot body;
Step 2, processor receives the temperature signal of the said temperature value of representative;
The temperature value that step 3, processor will receive the pairing temperature value of temperature signal and storage in advance compares, and when the temperature value that receives during more than or equal to the temperature value of storage in advance, said 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 | 2012-01-13 | ||
| CN201210011547.2 | 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 true CN102613879A (en) | 2012-08-01 |
| CN102613879B CN102613879B (en) | 2014-04-09 |
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| 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 |
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| CN (1) | CN102613879B (en) |
Citations (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
Patent Citations (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 |
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| CN102613879B (en) | 2014-04-09 |
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