CN1152604C - Temperature-sensing electrothermal film - Google Patents
Temperature-sensing electrothermal film Download PDFInfo
- Publication number
- CN1152604C CN1152604C CNB011147512A CN01114751A CN1152604C CN 1152604 C CN1152604 C CN 1152604C CN B011147512 A CNB011147512 A CN B011147512A CN 01114751 A CN01114751 A CN 01114751A CN 1152604 C CN1152604 C CN 1152604C
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- Prior art keywords
- temperature
- electrothermal film
- radiant heating
- present
- electric radiant
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- Fixing For Electrophotography (AREA)
Abstract
The present invention relates to an electrothermal film device which has the function of directly sensing the temperature. An electrothermal film of the present invention is composed of two materials 2 and 5 and more than one temperature-voltage output terminal 6, wherein the two materials 2 and 5 have different temperature-resistance coefficients; the output of the temperature-voltage output terminal 6 can has positive temperature characteristic, or negative temperature characteristic, or linear temperature characteristic or non-linear temperature characteristic.
Description
The invention belongs to field of electronics.
Conventional measurement and control of temperature method is that heated medium is carried out.For Electric radiant Heating Film, that is: by the Electric radiant Heating Film heat medium, for example water or air obtain medium temperature through transducer and corresponding electronic measurement circuit, and control parameters is controlled then.Under the bigger condition of Electric radiant Heating Film unit power density, this method regular meeting is out of control because of the thermo-lag of medium and transducer, causes the instantaneous rising of Electric radiant Heating Film temperature and burns.Obviously, be the basic method that addresses this problem the time lag of eliminating in traditional thermometric link, but do not have a kind of electrothermal film device that can directly export expression thermal source the degree of heat signal up to now.
Main purpose of the present invention provides a kind of electrothermal film device with direct sense temperature function, eliminating the time lag that is caused by medium and transducer in traditional thermometric link, thereby prolongs useful life of electrothermal film device.
The present invention utilizes the intrinsic resistance-temperature characterisitic of thermo electric material itself, making Electric radiant Heating Film itself is a heater, be one again and need not to increase the temperature-sensitive element that components and parts just can be exported the signal of telecommunication that the signal of telecommunication of this output is just directly expressed the degree of heat of Electric radiant Heating Film itself.As long as this be mixed with the material that has different resistance-temperatures coefficient more than two kinds with electrothermal film material, be produced on the matrix by required form and certain proportion, draw one or several electrodes between the Electric radiant Heating Film of different temperature coefficients, the voltage change signal of electrode output will become certain proportionate relationship with the temperature of heater.Select the material of different resistance-temperatures coefficient, just can obtain different temperatures-voltage characteristic, comprise positive temperature coefficient and negative temperature coefficient, linear exporting with nonlinear and needed amplitude.Those skilled in the art easily knows, according to ohm theorem I=U/R, when voltage U is constant, electric current I changes with the variation of resistance R, thereby in fact almost any electrothermal device is under the constant condition of voltage, because of the relation of itself resistance-temperature characterisitic, the current change quantity that flows through this device has also just been expressed the degree of heat of this device heating body, could realize but will utilize this current signal generally also must or externally be connected in series a resistance by the current transformer of device outside.The substantive characteristics that the present invention is different with existing device just is being this: utilize the intrinsic resistance-temperature characterisitic of thermo electric material itself and have the electric resistance partial pressure relation that the material of different resistance-temperatures coefficient constitutes more than two kinds, directly this current signal is converted to voltage signal output, electrothermal film device of the present invention is a three terminal device or more than the device of three ends, has temperature-voltage output end, existing electrothermal film device is a two-terminal device, and heating function only is provided.
Characteristics of the present invention are:
1. only utilize the characteristic of exothermic material itself, just can obtain an existing heating function, the new unit of temperature perceptional function is arranged again;
2. the temperature-sensitive signal of this device output is eliminated the time lag that is caused by medium and transducer in the conventional thermometric link fully, and it is more accurate and safer to temperature controlling to make;
3. increase the cost of manufacture of electrothermal film device hardly;
4. the simplification in the application is provided.
As following one embodiment of the present of invention that will narrate, Fig. 1 is device architecture figure of the present invention, and Fig. 2 is an equivalent circuit diagram of the present invention.Obviously, according to the needs of using, heater can be more than two sections, but the equal extraction electrode in junction between every adjacent two sections.In addition, each section also can be in series by the heater of the material of some kinds of similar and different resistance-temperatures coefficient.
Only implement straightforward procedure of the present invention and be with two kinds of materials, printed on insulating body 1 with different temperature coefficients, as shown in Figure 1,2,5 are two kinds and have different resistance among the figure---the Electric radiant Heating Film A and the Electric radiant Heating Film B of temperature coefficient, 3,4 are electrothermal film device connection power supply terminal electrode a and electrode b, 6 is detection signal lead-out terminal electrode c, and the size of the voltage signal of its output becomes certain proportionate relationship with the temperature of the heater that Electric radiant Heating Film constitutes.On circuit, Electric radiant Heating Film 2 and 5 constitutes a resitstance voltage divider, and Fig. 2 is its equivalent electric circuit, and its input and output have following relation:
U
bc＝R
B/(R
A+R
B)·U
ab
Adjust the two ratio according to the material of selected different temperature coefficients, for example under the condition of same thickness and width, adjust the length of the two, make it in the time of 100 ℃ R
A=R
B, then export U
Bc=R
B/ (R
A+ R
B) U
Ab=1/2U
AbHave the resistance bigger---temperature coefficient as Electric radiant Heating Film B, then when temperature is higher than 100 ℃, export U than Electric radiant Heating Film A
Bc＞1/2U
AbWhen temperature is lower than 100 ℃, output U
Bc＜1/2U
Ab
Claims (1)
1. temperature-sensing electrothermal film, it is a heater, be useful on the terminal a, the b that connect power supply, it is characterized in that described heater is to be made of the electrothermal film material that has different temperatures-resistance coefficient more than two kinds, has voltage output end at least between the electrothermal film material of different temperatures-resistance coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011147512A CN1152604C (en) | 2001-05-30 | 2001-05-30 | Temperature-sensing electrothermal film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011147512A CN1152604C (en) | 2001-05-30 | 2001-05-30 | Temperature-sensing electrothermal film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1388733A CN1388733A (en) | 2003-01-01 |
| CN1152604C true CN1152604C (en) | 2004-06-02 |
Family
ID=4661372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011147512A Expired - Fee Related CN1152604C (en) | 2001-05-30 | 2001-05-30 | Temperature-sensing electrothermal film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1152604C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232749B (en) * | 2008-02-25 | 2011-02-16 | 栾松 | Matrix wiring type metal electric heating membrane |
| CN102298406A (en) * | 2011-08-24 | 2011-12-28 | 张克勇 | Electric heater and control device thereof |
-
2001
- 2001-05-30 CN CNB011147512A patent/CN1152604C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1388733A (en) | 2003-01-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG XIAYE DAILY ELECTRICAL APPLIANCES CO., L Free format text: FORMER OWNER: CHAOAN XIAYE ELECTRIC APPLIANCES CO., LTD. Effective date: 20140821 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 515644 CHAOZHOU, GUANGDONG PROVINCE TO: 515041 SHANTOU, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140821 Address after: 515041, No. 111, A building, No. 68, Songshan Road, Guangdong, Shantou Patentee after: Guangdong Xiaye Daily Electrical Appliances Co., Ltd. Address before: Gold sand village 515644 Guangdong province Chaoan Caitang Patentee before: Chaoan Xiaye Electric Appliances Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040602 Termination date: 20200530 |