CN201749377U - Temperature control circuit - Google Patents
Temperature control circuit Download PDFInfo
- Publication number
- CN201749377U CN201749377U CN2010202682500U CN201020268250U CN201749377U CN 201749377 U CN201749377 U CN 201749377U CN 2010202682500 U CN2010202682500 U CN 2010202682500U CN 201020268250 U CN201020268250 U CN 201020268250U CN 201749377 U CN201749377 U CN 201749377U
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- temperature
- resistance
- temperature sensor
- triode
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Abstract
The utility model discloses a temperature control circuit, which includes temperature sensors M1 and M2, wherein the output terminals of the temperature sensors M1 and M2 are respectively connected with an inverting input terminal and a non-inverting input terminal of an operational amplifier IC (integrated circuit), the output terminal of the operational amplifier IC is connected with the base electrode of a triode T1, the collecting electrode of the triode T1 is connected with the base electrode of a composite pipe, and the collecting electrode and the emitting electrode of the composite pipe are connected with the power circuit of an electric appliance. The M1 and the M2 are used for sensing difference between the indoor temperature and the outdoor temperature, and the working state of the electric appliance can be adjusted according to a set temperature difference value, so as to achieve temperature rising and dropping indoors; the natural temperature difference resource can be used reasonably, so that the resource waste is greatly reduced.
Description
Technical field
The utility model relates to a kind of control circuit, especially is a kind of temperature control circuit.
Background technology
Present ventilation, refrigeration plant can only come the Control work state by circuit according to the parameter of artificial setting.The control element of electrical equipment can not be analyzed indoor, outdoor actual temperature, and this temperature difference resource that exists is rationally utilized.With the blower fan is example, when Summer Morning or evening, outdoor temperature is lower than indoor temperature, open blower fan the outdoor low temperature air is introduced the indoor purpose of lowering the temperature of can realizing, and work as noon, outdoor air themperature is higher than indoor temperature, still is in opening as blower fan, indoor temperature is increased, also caused energy dissipation.
The utility model content
For overcoming above-mentioned technical matters, the utility model provide a kind of simple in structure, can be widely used in ventilating, the temperature control circuit of electric refrigerator.
For realizing above-mentioned technical purpose, the utility model is achieved through the following technical solutions: a kind of temperature control circuit, comprise by same model, quantity identical the temperature sensor M1 that is in series of diode, temperature sensor M2, the rear end of temperature sensor M2 connects one and adjusts branch road, adjust on the branch road and be in series with potentiometer R2, current-limiting resistance R1, the output terminal of temperature sensor M1 connects the inverting input of transport and placing device IC, the output terminal of temperature sensor M2 connects the in-phase input end of transport and placing device IC, transport and placing device IC output terminal connects the base stage of triode T1 by resistance R 8, the collector of triode T1 connects power supply by resistance R 9, triode T1 grounded emitter, the collector of triode T1 is by the base stage of resistance R 10 connection complex pipes, the collector of complex pipe, emitter connecting circuit power circuit.
Above-mentioned described temperature sensor M1, M2 connect respectively and adjust resistance R 5, R3, R5 ≈ R3.
The rear end resistance in series R4 of above-mentioned described temperature sensor M2.
The utility model is compared with conventional art has following beneficial effect: by the temperature contrast of M1, M2 perception indoor and outdoor, and adjust the duty of electrical equipment according to the temperature gap of setting, realize the lifting of indoor temperature; The natural temperature differential resource is rationally utilized, reduced the waste of resource greatly.
Description of drawings
Accompanying drawing is the structural representation of a kind of embodiment of the utility model.
Embodiment
Is that embodiment is described further below in conjunction with accompanying drawing to control the blower fan duty by this circuit.
Referring to accompanying drawing, a kind of temperature control circuit, comprise two by same model, quantity identical diode the temperature sensor M1, the M2 that are in series, temperature sensor M1 front end connects resistance R 5, rear end ground connection, resistance R 5 other ends connect power supply; Temperature sensor M2 rear and front end is resistance in series R3, resistance R 4 respectively, and resistance R 3 connects power supply, resistance R 4 ground connection, and temperature sensor M2 rear end connects one and regulates branch road, regulates on the branch road and is in series with potentiometer R2, resistance R 1, and resistance R 1 connects power supply; The output terminal of temperature sensor M1 connects the inverting input of transport and placing device IC, the output terminal of temperature sensor M2 connects the in-phase input end of transport and placing device IC, the output terminal of transport and placing device IC connects the base stage of triode T1 by resistance R 8, the collector of triode T1 connects power supply by resistance R 9, the grounded emitter of triode T1, the collector of triode T1 connects the base stage of triode T2 by resistance R 10 simultaneously, triode T2 back adopts darlington connection to connect triode T3 formation complex pipe, the collector of complex pipe connects blower fan circuit, grounded emitter.
Above-mentioned described resistance R 5, R3 are respectively the adjustment resistance of temperature sensor M1, temperature sensor M2, and R3 ≈ R5 guarantees to flow through 0.1 milliampere of the electric current ≈ of M1, M2.
Above-mentioned described R1 is a current-limiting resistance, and potentiometer R2 resistance equals number K to tens of K, is used to set the electric current of R4.
The resistance of above-mentioned described resistance R 4, its objective is to promoting the voltage of transport and placing device IC in-phase input end between tens of Europe in tens Europe.
Suppose M1, open when M2 place temperature differs T that because M1, M2 have linear negative temperature coefficient, establishing series connection diode number is N, then the every lifting of temperature is 1 ℃, and the tube voltage drop during M1, M2 work is falling-rising 2N millivolt approximately; Then, 2NT is adjusted in the voltage drop of resistance R 4 get final product by adjusting potentiometer R2.
When doing to heat up control: M1 is placed indoor, M2 places outdoor, when indoor temperature 〉=outdoor temperature or indoor temperature＜outdoor temperature＜indoor temperature+T, transport and placing device IC in-phase input end voltage is greater than inverting input voltage, transport and placing device IC output HIGH voltage, P point electronegative potential after T1 is anti-phase, blower fan G does not rotate; During outdoor temperature＞indoor temperature+T, transport and placing device IC homophase input voltage is less than reverse inter-input-ing voltage, transport and placing device IC output LOW voltage, and P point noble potential after T1 is anti-phase, blower fan G rotates, and the outdoor high temperature air is blown into indoor, plays the purpose of indoor intensification.
When doing cooling control: M1 is placed outdoor, M2 places indoor, when indoor temperature≤outdoor temperature or outdoor temperature＜indoor temperature＜outdoor temperature+T, transport and placing device IC in-phase input end voltage is greater than inverting input voltage, transport and placing device IC output HIGH voltage, P point electronegative potential after T1 is anti-phase, blower fan G does not rotate; During indoor temperature＞outdoor temperature+T, transport and placing device IC homophase input voltage is less than reverse inter-input-ing voltage, transport and placing device IC output LOW voltage, and P point noble potential after T1 is anti-phase, blower fan G rotates, and outdoor Cryogenic air is blown into indoor, plays the purpose of room temperature lowering.
Claims (1)
1. temperature control circuit, it is characterized in that: comprise by same model, the temperature sensor M1 that the diode that quantity is identical is in series, temperature sensor M2, the rear end of temperature sensor M2 connects one and adjusts branch road, adjust on the branch road and be in series with potentiometer R2, current-limiting resistance R1, the output terminal of temperature sensor M1 connects the inverting input of transport and placing device IC, the output terminal of temperature sensor M2 connects the in-phase input end of transport and placing device IC, transport and placing device IC output terminal connects the base stage of triode T1 by resistance R 8, the collector of triode T1 is by the base stage of resistance R 10 connection complex pipes, the collector of complex pipe, emitter connecting circuit power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202682500U CN201749377U (en) | 2010-07-23 | 2010-07-23 | Temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202682500U CN201749377U (en) | 2010-07-23 | 2010-07-23 | Temperature control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749377U true CN201749377U (en) | 2011-02-16 |
Family
ID=43584048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202682500U Expired - Fee Related CN201749377U (en) | 2010-07-23 | 2010-07-23 | Temperature control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749377U (en) |
-
2010
- 2010-07-23 CN CN2010202682500U patent/CN201749377U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20110723 |