CN201412377Y - Stepless speed regulation module for vehicle air conditioning fan - Google Patents
Stepless speed regulation module for vehicle air conditioning fan Download PDFInfo
- Publication number
- CN201412377Y CN201412377Y CN2009200573277U CN200920057327U CN201412377Y CN 201412377 Y CN201412377 Y CN 201412377Y CN 2009200573277 U CN2009200573277 U CN 2009200573277U CN 200920057327 U CN200920057327 U CN 200920057327U CN 201412377 Y CN201412377 Y CN 201412377Y
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- circuit
- drive circuit
- speed regulation
- stepless speed
- over
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- Expired - Lifetime
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- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model relates to a stepless speed regulation module for a vehicle air conditioning fan, comprising an external power supply, an air conditioning fan, a 12V direct current voltage stabilizing circuit, a drive circuit, a power field effect transistor, a PWM signal input circuit, an over-temperature protective circuit, an over-voltage protective circuit and an over-current protective circuit. Signals of the external power supply are transferred to the air conditioning fan by sequentially passing through the voltage stabilizing circuit, the drive circuit and the power field effect transistor, signals of the PWM signal input circuit are transferred to the drive circuit by passing through the over-temperature protective circuit, and the over-voltage protective circuit and the over-current protective circuit are both connected with the drive circuit. The stepless speed regulation module has long service life, low cost and simple air volume regulation, saves the energy, and can notgenerate radio interference.
Description
Technical field
The utility model relates to speed adjusting module, in particular for the speed adjusting module of air-conditioning draught fan, realizes the electronic stepless speed regulation of air-conditioning draught fan.
Background technique
At present the car air conditioner fan speed regulation generally adopts resistance step-down third gear speed governing or blower fan series parallel control, and speed regulation need be switched with a lot of relays and realized that this mode of speed regulation has following deficiency:
1, the relay mechanical contact switches, and produces electrical spark, and automotive system is produced radio interference;
2, mechanical contact switches, and the life-span is short;
3, resistance step-down can produce heat on resistance, can reduce system's refrigerating capacity, wastes energy;
4, during the third gear series parallel control, each fan delivery might be inequality;
5, need to use a lot of relays, non-ferrous metal feed consumptions such as copper material are many, the cost height;
6, third gear resistance decompression speed is many with wire rod, four lines of each blower fan, cost height;
7, resistance decompression speed, each blower fan needs a high-power third gear or fourth gear speed adjusting resistance, increases the blower fan cost;
8, the blower fan starting current is big, can not realize the blower fan soft start;
9, be unfavorable for regulating automatically air quantity.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of car air conditioner blower fan stepless speed regulation module, and not only the life-span is long, energy-conservation, cost is low, and the air quantity adjusting is easy, can not produce radio interference.
For addressing the above problem, the technical solution of the utility model is: a kind of car air conditioner blower fan stepless speed regulation module, comprise external power supply, air-conditioning draught fan, be provided with mu balanced circuit, drive circuit, semiconductor switch circuit, pwm signal input circlult, described external power supply signal is transferred to air-conditioning draught fan by mu balanced circuit, drive circuit, semiconductor switch circuit successively, and described pwm signal input circlult is connected with drive circuit.The external power supply of high pressure is undertaken behind the lowering and stabilizing blood pressure guaranteeing that for drive circuit provides electric energy drive circuit can be operated in normal state by mu balanced circuit, also is simultaneously the reliable assurance of the normal operation of speed adjusting module.The pwm signal input circlult is by the switching degree of drive circuit control semiconductor switch circuit, and then the rotating speed of control air-conditioning draught fan.
As improvement, described mu balanced circuit is the 12V direct current regulation circuit.
As improvement, described semiconductor switch circuit is a power field effect pipe.
As improvement, be provided with the overtemperature prote circuit, described pwm signal input circlult signal is transferred to drive circuit by overtemperature prote.The overtemperature prote circuit inductance is to the speed adjusting module temperature when too high, can automatic disconnection, thus the pwm signal that cuts off the pwm signal input circlult is input in the drive circuit.
As improvement, be provided with overvoltage crowbar and over-current protection circuit, described overvoltage crowbar all is connected with drive circuit with over-current protection circuit.In the high voltage of burst or the protection under the big electric current input condition, avoid the hardware of drive circuit to be damaged, also be the further assurance that can be operated in normal state to drive circuit.
The beneficial effect that the utility model is compared with prior art brought is:
Adopt the switching device of power field effect pipe as air-conditioning draught fan, not only the life-span is long, energy-conservation, cost is low to make speed adjusting module, and the air quantity adjusting is easy, can not produce radio interference;
Overvoltage crowbar, over-current protection circuit, overtemperature prote circuit not only have protective action to the speed governing module hardware, and guarantee the module proper functioning.
Description of drawings
Fig. 1 is an electrical connection diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the explanation accompanying drawing.
As shown in Figure 1, a kind of car air conditioner blower fan stepless speed regulation module comprises external power supply 3, air-conditioning draught fan 9, is provided with mu balanced circuit, drive circuit 6, semiconductor switch circuit, pwm signal input circlult 4.In the present embodiment, mu balanced circuit is a 12V direct current regulation circuit 2, and semiconductor switch circuit is a power field effect pipe 8.Described external power supply 3 signals are transferred to air-conditioning draught fan 9 by 12V direct current regulation circuit 2, drive circuit 6, power field effect pipe 8 successively, and described pwm signal input circlult 4 signals are transferred to drive circuit 6 by overtemperature prote circuit 5.
Be provided with overvoltage crowbar 1 and over-current protection circuit 7, described overvoltage crowbar 1 all is connected with drive circuit 6 with over-current protection circuit 7.In the high voltage of burst or the protection under the big electric current input condition, avoid the hardware of drive circuit 6 to be damaged, also be the further assurance that can be operated in normal state to drive circuit 6.
The external power supply 3 that speed adjusting module of the present utility model will be input as DC12V～30V becomes 12V voltage by 2 voltage stabilizings of 12V direct current regulation circuit, stabilized power supply is provided for drive circuit 6, makes hardware effort in the drive circuit 6 in steady state.The pwm signal that pwm signal input circlult 4 sends is behind overtemperature prote circuit 5; input to drive circuit 6; when the thermistor in the overtemperature prote circuit 5 is sensed the speed adjusting module temperature when too high, overtemperature prote circuit 5 can automatic disconnections, thereby cut off the pwm signal input of pwm signal input circlult 4.Drive circuit 6 driving power field effect transistors 8, power field effect pipe 8 drives air-conditioning draught fan 9, dutycycle is turn-offed in dutycycle decision power field effect pipe 8 conductings of PWM speed governing input signal, the rotating speed of decision air-conditioning draught fan 9, when air-conditioning draught fan 9 overcurrents or short circuit, or input voltage is when too high, drive circuit 6 reduces power field effect pipe 8 conduction ratios, air-conditioning draught fan 9 is in low current running or low current pulsation running, until air-conditioning draught fan 9 overcurrents or short circuit, or the releasing of overtension state, speed adjusting module reenters normal working.
Claims (5)
1. car air conditioner blower fan stepless speed regulation module, comprise external power supply, air-conditioning draught fan, it is characterized in that: be provided with mu balanced circuit, drive circuit, semiconductor switch circuit, pwm signal input circlult, described external power supply signal is transferred to air-conditioning draught fan by mu balanced circuit, drive circuit, semiconductor switch circuit successively, and described pwm signal input circlult is connected with drive circuit.
2. a kind of car air conditioner blower fan stepless speed regulation module according to claim 1, it is characterized in that: described mu balanced circuit is the 12V direct current regulation circuit.
3. a kind of car air conditioner blower fan stepless speed regulation module according to claim 2, it is characterized in that: described semiconductor switch circuit is a power field effect pipe.
4. a kind of car air conditioner blower fan stepless speed regulation module according to claim 3 is characterized in that: be provided with the overtemperature prote circuit, described pwm signal input circlult signal is transferred to drive circuit by overtemperature prote.
5. a kind of car air conditioner blower fan stepless speed regulation module according to claim 4, it is characterized in that: be provided with overvoltage crowbar and over-current protection circuit, described overvoltage crowbar all is connected with drive circuit with over-current protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200573277U CN201412377Y (en) | 2009-05-26 | 2009-05-26 | Stepless speed regulation module for vehicle air conditioning fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200573277U CN201412377Y (en) | 2009-05-26 | 2009-05-26 | Stepless speed regulation module for vehicle air conditioning fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412377Y true CN201412377Y (en) | 2010-02-24 |
Family
ID=41714261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200573277U Expired - Lifetime CN201412377Y (en) | 2009-05-26 | 2009-05-26 | Stepless speed regulation module for vehicle air conditioning fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412377Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635564A (en) * | 2012-02-27 | 2012-08-15 | 石家庄市公共交通总公司 | Air-conditioning blower control system of natural gas bus |
| CN103089683A (en) * | 2013-02-22 | 2013-05-08 | 四川泛华电器有限责任公司 | Stepless speed regulation system of automobile air condition air blower |
| CN104763667A (en) * | 2015-04-01 | 2015-07-08 | 浙江毅力汽车空调有限公司 | Air blower speed regulating system of automobile |
| CN105539066A (en) * | 2015-12-25 | 2016-05-04 | 博耐尔汽车电气系统有限公司 | Air volume speed regulation circuit for automobile air conditioner |
| CN113286407A (en) * | 2021-04-02 | 2021-08-20 | 格力电器(南京)有限公司 | Ion fan control device and ion fan |
-
2009
- 2009-05-26 CN CN2009200573277U patent/CN201412377Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635564A (en) * | 2012-02-27 | 2012-08-15 | 石家庄市公共交通总公司 | Air-conditioning blower control system of natural gas bus |
| CN102635564B (en) * | 2012-02-27 | 2014-12-10 | 于新泉 | Air-conditioning blower control system of natural gas bus |
| CN103089683A (en) * | 2013-02-22 | 2013-05-08 | 四川泛华电器有限责任公司 | Stepless speed regulation system of automobile air condition air blower |
| CN104763667A (en) * | 2015-04-01 | 2015-07-08 | 浙江毅力汽车空调有限公司 | Air blower speed regulating system of automobile |
| CN104763667B (en) * | 2015-04-01 | 2016-06-15 | 浙江毅力汽车空调有限公司 | Automotive air blowers velocity control system |
| CN105539066A (en) * | 2015-12-25 | 2016-05-04 | 博耐尔汽车电气系统有限公司 | Air volume speed regulation circuit for automobile air conditioner |
| CN113286407A (en) * | 2021-04-02 | 2021-08-20 | 格力电器(南京)有限公司 | Ion fan control device and ion fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |