CN201344703Y - Automatic temperature compensation control circuit of refrigerator - Google Patents
Automatic temperature compensation control circuit of refrigerator Download PDFInfo
- Publication number
- CN201344703Y CN201344703Y CNU2008202276196U CN200820227619U CN201344703Y CN 201344703 Y CN201344703 Y CN 201344703Y CN U2008202276196 U CNU2008202276196 U CN U2008202276196U CN 200820227619 U CN200820227619 U CN 200820227619U CN 201344703 Y CN201344703 Y CN 201344703Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- control circuit
- compensation control
- refrigerator
- thermistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model relates to a temperature compensation control circuit, in particular to an automatic temperature compensation control circuit of a refrigerator. The automatic temperature compensation control circuit of the refrigerator comprises a heating wire driving circuit and a temperature detection component, wherein the temperature detection component is provided with a thermistance; and the thermistance is compared to the reference voltage of a resistor series circuit through a comparator and output to the heating wire driving circuit to drive and compensate for the heating wire. The automatic temperature compensation control circuit of the refrigerator has high precision and is not easy to break.
Description
Technical field
The utility model relates to a kind of temperature compensation control circuit, relates in particular to a kind of refrigerator auto thermal compensation control circuit.
Background technology
Present most of refrigerator all is to adopt the magnetosensitive switch to make the compensation heating wire works as refrigerator closure when environment temperature is low, disconnecting when environment temperature is high. the magnetosensitive switch is to utilize a kind of temperature characterisitic of soft magnetic materials to control the switch of tongue tube. the temperature error of soft magnetic materials is bigger, tongue tube more fragile (breaking).
Summary of the invention
The purpose of this utility model is to overcome above defective, and a kind of precision height, non-damageable refrigerator auto thermal compensation control circuit are provided.
The technical scheme of refrigerator auto thermal compensation control circuit of the present utility model is such: it comprises heater strip drive circuit, temperature detection part, temperature detection part is set to thermistor, and the reference voltage of thermistor by comparator and resistance series circuit compares and output to the heater strip drive circuit and drive the compensation heater strip.
Thermistor and resistance series connection, resistance series circuit with the thermistor parallel connection after link to each other with comparator, line between the negative pole of comparator and resistance R 1 and the resistance R 2 connects, line between the positive pole of comparator and resistance R 3 and the thermistor connects, line between resistance R 1 and the resistance R 2 also is connected with the heater strip drive circuit by diode, and the negative pole of heater strip drive circuit and diode is connected.
Refrigerator auto thermal compensation control circuit precision height of the present utility model, not fragile.
Description of drawings
Fig. 1 is the block diagram of drawing and pulling type drawer of the present utility model.
The specific embodiment
As shown in the figure, it comprises the heater strip drive circuit refrigerator auto thermal compensation control circuit of the present utility model, temperature detection part, temperature detection part is set to thermistor, the reference voltage of thermistor by comparator and resistance series circuit compares and outputs to the heater strip drive circuit and drive the compensation heater strip, thermistor and resistance series connection, resistance series circuit with the thermistor parallel connection after link to each other with comparator, line between the negative pole of comparator and resistance R 1 and the resistance R 2 connects, line between the positive pole of comparator and resistance R 3 and the thermistor connects, line between resistance R 1 and the resistance R 2 also is connected with the heater strip drive circuit by diode, and the negative pole of heater strip drive circuit and diode is connected.
This circuit is to adopt temperature sensors of high precision (thermistor) as temperature detection part, compare and export by comparator (IC) and reference voltage (resistance series circuit) and drive the compensation heater strip. solved the low precision of magnetosensitive switch, flimsy shortcoming.
Claims (2)
1. refrigerator auto thermal compensation control circuit, it comprises heater strip drive circuit, temperature detection part, it is characterized in that: temperature detection part is set to thermistor, and the reference voltage of thermistor by comparator and resistance series circuit compares and output to the heater strip drive circuit and drive the compensation heater strip.
2. refrigerator auto thermal compensation control circuit according to claim 1, it is characterized in that, thermistor and resistance series connection, link to each other with comparator after resistance series circuit and the thermistor parallel connection, line between the negative pole of comparator and resistance R 1 and the resistance R 2 connects, line between the positive pole of comparator and resistance R 3 and the thermistor connects, and the line between resistance R 1 and the resistance R 2 also is connected with the heater strip drive circuit by diode, and the negative pole of heater strip drive circuit and diode is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202276196U CN201344703Y (en) | 2008-11-24 | 2008-11-24 | Automatic temperature compensation control circuit of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202276196U CN201344703Y (en) | 2008-11-24 | 2008-11-24 | Automatic temperature compensation control circuit of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344703Y true CN201344703Y (en) | 2009-11-11 |
Family
ID=41276283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202276196U Expired - Fee Related CN201344703Y (en) | 2008-11-24 | 2008-11-24 | Automatic temperature compensation control circuit of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201344703Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566622A (en) * | 2010-12-30 | 2012-07-11 | 泰州乐金电子冷机有限公司 | Temperature adjusting device for refrigerator |
| CN102865717A (en) * | 2012-10-16 | 2013-01-09 | 中标能效科技（北京）有限公司 | Refrigerator and energy-saving refreshing device thereof |
-
2008
- 2008-11-24 CN CNU2008202276196U patent/CN201344703Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566622A (en) * | 2010-12-30 | 2012-07-11 | 泰州乐金电子冷机有限公司 | Temperature adjusting device for refrigerator |
| CN102566622B (en) * | 2010-12-30 | 2014-03-19 | 泰州乐金电子冷机有限公司 | Temperature adjusting device for refrigerator |
| CN102865717A (en) * | 2012-10-16 | 2013-01-09 | 中标能效科技（北京）有限公司 | Refrigerator and energy-saving refreshing device thereof |
| CN102865717B (en) * | 2012-10-16 | 2016-04-06 | 中标能效科技（北京）有限公司 | Refrigerator and energy-saving fresh-keeping device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20141124 |
|
| EXPY | Termination of patent right or utility model |