CN210686400U - Air conditioner fan speed regulation module with temperature protection function - Google Patents
Air conditioner fan speed regulation module with temperature protection function Download PDFInfo
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- CN210686400U CN210686400U CN201921316759.5U CN201921316759U CN210686400U CN 210686400 U CN210686400 U CN 210686400U CN 201921316759 U CN201921316759 U CN 201921316759U CN 210686400 U CN210686400 U CN 210686400U
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- fan speed
- temperature protection
- speed regulation
- temperature
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Abstract
The utility model provides an air conditioner fan speed regulation module with temperature protection function, which comprises a fan speed regulation module, a voltage stabilizing circuit, a triode temperature detection circuit and a triode temperature protection circuit, wherein the fan speed regulation module comprises an MOS (metal oxide semiconductor) tube and a fan speed regulation signal input, and the MOS tube is an electronic switch of the air conditioner fan; the voltage stabilizing circuit provides stable working voltage for the triode temperature detection circuit and the triode temperature protection circuit, the triode temperature protection circuit is connected to the control end of the MOS tube, and the triode temperature detection circuit detects an electric current increasing signal generated by the fan speed regulation module due to temperature rise and provides a high-voltage signal for the triode temperature protection circuit so as to control the MOS tube to be cut off; and the temperature returns to normal, the triode temperature protection circuit returns to a low-voltage signal, and the MOS tube returns to normal work. The utility model discloses a temperature protection and automatic recovery's function.
Description
Technical Field
The utility model relates to a vehicle air conditioner fan speed governing module, especially a possess temperature protect function air conditioner fan speed governing module.
Background
In the existing market, the temperature protection that vehicle air conditioner fan speed regulation module relates to adopts the temperature fuse to accomplish the excess temperature protection, and after the temperature protection, the temperature fuse fuses, does not have the autonomic recovery function, need to change the temperature fuse, causes the cost extravagant.
Disclosure of Invention
In order to solve the problem that can not independently resume behind the current air conditioner fan speed governing module excess temperature protection, the utility model provides a possess temperature protect function air conditioner fan speed governing module, can the normal work of automatic recovery after resuming normal temperature.
Therefore, the technical scheme of the utility model is that: the utility model provides a possess temperature protect function air conditioner fan speed governing module, includes fan speed governing module, and fan speed governing module includes MOS pipe, fan speed governing signal input, and the MOS pipe is air conditioner fan's electronic switch, its characterized in that: the fan speed regulation device also comprises a voltage stabilizing circuit, a triode temperature detection circuit and a triode temperature protection circuit, wherein the voltage stabilizing circuit provides stable working voltage for the triode temperature detection circuit and the triode temperature protection circuit, the triode temperature protection circuit is connected to the control end of the MOS tube, and the triode temperature detection circuit detects an electric current increasing signal generated by the fan speed regulation module due to temperature rise and provides a high-voltage signal for the triode temperature protection circuit so as to control the MOS tube to be cut off; and the temperature returns to normal, the triode temperature protection circuit returns to a low-voltage signal, and the MOS tube returns to normal work.
The utility model has the advantages that: a triode temperature detection circuit is added in the air conditioner fan speed regulation module and is used for detecting an electric current increasing signal generated by the fan speed regulation module due to temperature rise and providing a high-voltage signal for a triode temperature protection circuit, so that the MOS tube is controlled to be cut off, and temperature protection is realized; the temperature returns to normal, the triode temperature protection circuit returns a low-voltage signal, and the MOS tube returns to normal work; the utility model discloses possess temperature protection, automatic recovery's function.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
The present invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, an air conditioner fan speed regulation module with a temperature protection function comprises a fan speed regulation module, a voltage stabilizing circuit, a triode temperature detection circuit and a triode temperature protection circuit, wherein the fan speed regulation module comprises an MOS transistor and a fan speed regulation signal input, the MOS transistor is an electronic switch of an air conditioner fan, the voltage stabilizing circuit provides stable working voltage for the triode temperature detection circuit and the triode temperature protection circuit, the triode temperature protection circuit is connected to a control end of the MOS transistor, and the triode temperature detection circuit detects an electric current increasing signal generated by the fan speed regulation module due to temperature rise and provides a high voltage signal for the triode temperature protection circuit, so that the MOS transistor is controlled to be switched off; and the temperature returns to normal, the triode temperature protection circuit returns to a low-voltage signal, and the MOS tube returns to normal work.
As shown in fig. 2, the circuit principle of the air conditioner fan speed regulation module with the temperature protection function includes a fan speed regulation module composed of an MOS transistor Q1, a fan speed regulation signal input, a resistor R1, a resistor R2, and a resistor R3, and is connected to a main control circuit of the air conditioner fan M; the R4 and the ZD3 form a voltage stabilizing circuit which provides stable working voltage for the triode temperature detection circuit and the triode temperature protection circuit; the resistor R5 and the resistor R8 are bias resistors of a triode Q2, and a triode temperature detection circuit is formed by a filter capacitor C1, a filter capacitor C2, a resistor R5, a resistor R8 and a triode Q2; the triode temperature protection circuit consists of a triode Q3, a balance resistor R7 and a balance resistor R9, wherein the balance resistor R7 and the balance resistor R9 are respectively arranged at two poles of the triode Q3, and the other pole of the triode Q3 is grounded; the triode temperature protection circuit outputs low level or high level to the MOS tube Q1, and controls the MOS tube Q1, and the MOS tube Q1 is used as an electronic switch of the air-conditioning fan M.
The utility model discloses a theory of operation: due to the volt-ampere characteristic of the triode, when the temperature of the fan speed regulation module is too high, the triode Q2 is conducted, the triode Q3 is conducted, the voltage of a control electrode of an MOS (metal oxide semiconductor) tube Q1 is pulled down, the MOS stops working, the fan does not work, and the temperature protection function of the fan speed regulation module is realized; when the temperature drops to a set value, the triode Q2 is cut off, the triode Q3 is cut off, the MOS tube is conducted, the fan works, and the temperature protection recovery of the fan speed regulation module is realized.
For those skilled in the art, simple combination, equivalent replacement, and further improvement without departing from the technical concept of the present invention shall be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides a possess temperature protect function air conditioner fan speed governing module, includes fan speed governing module, and fan speed governing module includes MOS pipe, fan speed governing signal input, and the MOS pipe is air conditioner fan's electronic switch, its characterized in that: the fan speed regulation device also comprises a voltage stabilizing circuit, a triode temperature detection circuit and a triode temperature protection circuit, wherein the voltage stabilizing circuit provides stable working voltage for the triode temperature detection circuit and the triode temperature protection circuit, the triode temperature protection circuit is connected to the control end of the MOS tube, and the triode temperature detection circuit detects an electric current increasing signal generated by the fan speed regulation module due to temperature rise and provides a high-voltage signal for the triode temperature protection circuit so as to control the MOS tube to be cut off; and the temperature returns to normal, the triode temperature protection circuit returns to a low-voltage signal, and the MOS tube returns to normal work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316759.5U CN210686400U (en) | 2019-08-14 | 2019-08-14 | Air conditioner fan speed regulation module with temperature protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316759.5U CN210686400U (en) | 2019-08-14 | 2019-08-14 | Air conditioner fan speed regulation module with temperature protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210686400U true CN210686400U (en) | 2020-06-05 |
Family
ID=70890850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921316759.5U Active CN210686400U (en) | 2019-08-14 | 2019-08-14 | Air conditioner fan speed regulation module with temperature protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210686400U (en) |
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2019
- 2019-08-14 CN CN201921316759.5U patent/CN210686400U/en active Active
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