CN2708010Y - Fan control device - Google Patents
Fan control device Download PDFInfo
- Publication number
- CN2708010Y CN2708010Y CN 200420021512 CN200420021512U CN2708010Y CN 2708010 Y CN2708010 Y CN 2708010Y CN 200420021512 CN200420021512 CN 200420021512 CN 200420021512 U CN200420021512 U CN 200420021512U CN 2708010 Y CN2708010 Y CN 2708010Y
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- Prior art keywords
- fan
- transistor
- control device
- switching circuit
- fan control
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Abstract
The utility model discloses a fan control device, comprising a switch circuit and a heat sensing element. The switch circuit is provided with a power input end connected with the power source, a drive end, and a power supply output end connected the fan. The heat sensing element is connected between the drive end of the switch circuit and the earth. The heat sensing element drives the switch circuit according to the detected working or the environment temperature, in order to make the power source supply electricity to the fan through the switch circuit when the temperature reaches the set temperature of the fan operation. The utility model can detect and drive the fan to run or be closed automatically according to the detected working or the environment temperature, and has the advantages of simple structure, easy realization, easy use, without needing single power source simultaneously, and improving the use effectiveness. The utility model can also connect a plurality of fans, drive in turn every fan to run for heat emission in the progressive mode, and improve the practicability, as well as the radiation effect of the fan.
Description
Technical field
The utility model relates to a kind of fan control device.
Background technique
Development along with industrial technology, fan is as a kind of good heat radiation or the article of air draft, its frequency of utilization is increased sharply, using scope is also more extensive: not only be applied to working environment or dispel the heat or air draft at home, broader applications in the various device device helping heat radiation, as the CPU of PC, automobile, refrigerating and air conditioning etc.
The rotating speed of fan and output wind-force are controllable mostly, wherein the rotating speed of part fan and output wind-force are to control by wind speed and wind power switch entirely, part is then controlled by remote controller, it is to carry out temperature sensing by quite complicated temperature sensor structure that suitable small part or quite senior fan are arranged in addition, and makes fan do the variation on rotating speed and the wind-force with regard to the sensed temperature value.
Yet utilize wind speed and wind power switch or remote controller to control the fan of rotation speed of the fan and wind-force, need just can make fan do the variation of different wind speed or wind-force by manual operation, and this switch in use for some time, damage easily, so except that operation inconvenience, more can cause the damage of fan; And utilize wind speed and wind power switch or remote controller to control the structure of rotation speed of the fan and wind-force, can't record the temperature of reality or environmental work, so can't carry out the adjusting of rotating speed and wind-force automatically.
Have the fan of complicated temperature sensor structure, though need not manual operation, its complex structure, part and technical sophistication, so its cost is quite expensive, and, must pay huge repair expenses and time if break down, quite uneconomical.In addition, the temperature sensor structure that this is complicated though can record the temperature of real work, can't record ambient operating temperature, so regular meeting's phenomenon of closing when opening when fan takes place, and for fan, is a major injury in fact.
Therefore existing fan control pattern is all quite inconvenient in the use, has not both met economic benefit, again the working life of rapid wear fan.
In addition, be installed on the radiation fan on the computer, be used for power supply unit and CPU heat radiation mostly: when power supply unit starts or cpu temperature when too high, fan promptly starts, and rotates heat radiation, till power-off.Owing to be applicable to that the fan on the computer there is no devices such as any wind speed control, therefore, fan from launch computer to closing, all be in the state that rotates at full speed, in use for some time, the as easy as rolling off a log damage of fan, make shorten its working life, also make the utilization benefit of computer reduce; Secondly, because fan is done running at full speed, promptly can produce the additional waste of noise and electric current, for the system of a computer work,, promptly can produce sizable noise when the fan of multiple computers starts simultaneously, and the electric current that uses also improves relatively, forms power wastage; Moreover real work place that the fan of general computer can only be fixedly arranged on single-point is dispelled the heat, but can't record the temperature of environmental work, so, generally speaking quite impracticable, also uneconomical; And the general employed fan of computer all is single individuality, there is no any device of control simultaneously of doing, and therefore must provide power supply separately, and this not only causes the waste of power supply, also makes the utilization benefit of computer reduce simultaneously.
The model utility content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of fan control device is provided, turning round/close, and simple in structure, easy to use according to work or the automatic drive fan of ambient temperature, need not independent power supply, and avoid fan is produced injury.
For achieving the above object, the utility model provides a kind of fan control device, be characterized in comprising switching circuit and sensible heat element, wherein switching circuit is provided with power input, drive end that connects power supply and the power output end that connects fan, and the sensible heat element is connected between the drive end and ground of switching circuit; The sensible heat element makes that according to its work that detects or ambient temperature driving switch circuit power supply is powered to fan through switching circuit when temperature reaches the setting temperature of fan running.
Described switching circuit also comprises the first transistor, transistor seconds, the 3rd transistor and electric capacity, wherein
The collector electrode of the first transistor is connected to power input, and emitter is connected to power output end and is connected to drive end through the 3rd, the 6th resistance;
The collector electrode of transistor seconds is connected to the base stage of the first transistor through the 4th resistance, and base stage is connected to drive end, grounded-emitter connection;
The 3rd transistorized base stage is connected to power input, is connected to the collector electrode of transistor seconds through the 8th resistance through the 7th resistance, and emitter connects power input, is connected to the base stage of the first transistor, grounded collector through second resistance through first resistance;
The 5th resistance one is connected to the collector electrode of the first transistor, between another termination the 3rd, the 6th resistance; First electric capacity is connected between the emitter and ground of the first transistor, and second electric capacity is connected between the base stage and ground of the first transistor; The 3rd electric capacity one is connected between the 3rd, the 6th resistance, the other end ground; The 4th electric capacity is connected between power input and the 3rd transistor base.
Described sensible heat element is a thermistor.
Described fan control device comprises a plurality of switching circuits, and the drive end of each switching circuit connects a sensible heat element, and the power input of each switching circuit all can connect a fan.
Described switching circuit and corresponding sensible heat element thereof are positioned over different detectings place.
The temperature difference of described each sensible heat element drives switching circuit.
A kind of fan control system of forming by described fan control device, wherein each fan control device connects a fan, and each fan control device can be positioned over different detectings place.
The utility model fan control device can work of detection and examination or ambient temperature and turn round/close according to work or the automatic drive fan of ambient temperature that detecting obtains, and it is simple in structure, is easy to realize, saves cost; And easy to use, can avoid fan is produced injury; Need not independent power supply simultaneously, improved its utilization benefit.In addition, the utility model also can connect a plurality of fans, its switching circuit and corresponding sensible heat element thereof can be positioned over different positions, detect the work or the ambient temperature of its diverse location of living in, when the work that detects or ambient temperature reach the temperature that sets, drive each fan running heat radiation successively in progressive mode, improved its practicability and fan radiating effect.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Description of drawings
Fig. 1 is the circuit diagram of the utility model first embodiment's a working state.
Fig. 2 is the circuit diagram of the utility model first embodiment's another kind of working state.
Fig. 3 is the utility model first embodiment's a workflow diagram.
Fig. 4 is the utility model second embodiment's a workflow diagram.
Embodiment
Fig. 1, Fig. 2, Fig. 3 are the circuit diagram and the workflow diagram of the utility model fan control device.
As shown in Figure 1, the utility model fan control device comprises switching circuit 1 and sensible heat elements T M1, and wherein switching circuit 1 is provided with power input D, drive end A that connects power supply and the power output end E that connects fan.This switching circuit 1 also comprises the first transistor Q1, transistor seconds Q2, the 3rd transistor Q3 and capacitor C 1, C2, C3, C4.The collector electrode of the first transistor Q1 is connected to power input D, and emitter is connected to power output end E and is connected to drive end A through the 3rd, the 6th resistance R 3, R6.The collector electrode of transistor seconds Q2 is connected to the base stage of the first transistor Q1 through the 4th resistance R 4, and base stage is connected to drive end A, grounded-emitter connection.The base stage of the 3rd transistor Q3 is connected to power input D, is connected to the collector electrode of transistor seconds Q2 through the 8th resistance R 8 through the 7th resistance R 7, emitter connects power input, is connected to the base stage of the first transistor Q1, grounded collector through second resistance R 2 through first resistance R 1.The 5th resistance R 5 one is connected to the collector electrode of the first transistor Q1, between another termination the 3rd, the 6th resistance R 3, the R6.First capacitor C 1 is connected between the first transistor Q1 emitter and the ground, and second capacitor C 2 is connected between the first transistor Q1 base stage and the ground; The 3rd capacitor C 3 one is connected between the 3rd, the 6th resistance R 3, the R6, the other end ground; The 4th capacitor C 4 is connected between power input D and the 3rd transistor Q3 base stage.Sensible heat elements T M1 is connected between the drive end A and ground of switching circuit 1.In the present embodiment, sensible heat elements T M1 is a thermistor.
The sensible heat elements T M1 of the utility model fan control device can make that power supply is powered to fan through switching circuit 1 when temperature reaches the setting temperature of fan running according to its work that detects or ambient temperature driving switch circuit 1.When sensible heat elements T M1 detecting learns that work or ambient temperature do not reach the setting temperature of drive fan running, the impedance height of sensible heat elements T M1, then drive end A is in high-voltage state, order about transistor seconds Q2 and be on state, so the electric current of power input D is held from transistor seconds Q2 with flowing to, therefore, transistor Q3 also forms on state, and makes the electric current of power input D hold from transistor Q3 with flowing to.At this moment, the base stage of the first transistor Q1 (drive point C) is in low-voltage state, and then the first transistor Q1 is in cut-off state, so no current flows to power output end E, and promptly to the fan power supply, fan does not turn round power supply.Otherwise, as shown in Figure 2, when work or ambient temperature meet or exceed the setting temperature that running sets, the impedance of sensible heat elements T M1 transfers toward low, then drive end A is in low-voltage state, second, the 3rd transistor Q2, Q3 is in turnoff state, at this moment, the collector electrode of transistor seconds Q2 (drive point B) cut-off current, the electric current of power input D does not flow to second, the 3rd transistor Q2, the Q3 place, flow to by first, second resistance R 1 and the formed bleeder circuit of R2 place make the base stage (drive point C) of the first transistor Q1 be in high-voltage state, the first transistor Q1 conducting, then electric current is from flow through the first transistor Q1 and flow to power output end E of power input D, and power supply is powered to fan, and the drive fan running is dispelled the heat.Be illustrated in figure 3 as the flow chart of this working method of the utility model fan control device.
The utility model fan control device can comprise a plurality of switching circuits, the drive end of each switching circuit respectively connects a sensible heat element, the power input of each switching circuit all can connect a fan, the coupled fan of its corresponding sensible heat element control of each switching circuit.Wherein the temperature of each sensible heat element drives switching circuit can be made different set, make each sensible heat element to drive coupled switching circuit according to different work or ambient temperature, when temperature reached its setting temperature, power supply was powered to respective fans through switching circuit.And its switching circuit and corresponding sensible heat element thereof can be positioned over the work of detecting present position, different position or ambient temperature and according to work that is detected or ambient temperature, the running of control fan.When switching circuit and the work of living in of corresponding sensible heat element thereof or ambient temperature reached the temperature that sets, the utility model produced progressive mode and drives first, second, third successively ... fan running dispels the heat.Its working method has multiple, can set the running state of first fan as shown in Figure 4, then drives second, third successively in progressive mode ... fan running dispels the heat.
In addition, a plurality of the utility model fan control devices can be formed fan control system, and wherein each fan control device connects and controls a fan, and each fan control device can be positioned over different detectings place.
The utility model fan control device can work of detection and examination or ambient temperature and turn round/close according to work or the automatic drive fan of ambient temperature that detecting obtains, and it is simple in structure, is easy to realize, saves cost; And easy to use, can avoid fan is produced injury; Need not independent power supply simultaneously, improved its utilization benefit.In addition, the utility model also can connect a plurality of fans, its switching circuit and corresponding sensible heat element thereof can be positioned over different positions, detect the work or the ambient temperature of its diverse location of living in, when the work that detects or ambient temperature reach the temperature that sets, drive each fan running heat radiation successively in progressive mode, improved its practicability and fan radiating effect.
Claims (8)
1, a kind of fan control device, it is characterized in that comprising switching circuit and sensible heat element, wherein switching circuit is provided with power input, drive end that connects power supply and the power output end that connects fan, and the sensible heat element is connected between the drive end and ground of switching circuit; The sensible heat element makes that according to its work that detects or ambient temperature driving switch circuit power supply is powered to fan through switching circuit when temperature reaches the setting temperature of fan running.
2, fan control device according to claim 1 is characterized in that described switching circuit also comprises the first transistor, transistor seconds, the 3rd transistor and electric capacity, wherein
The collector electrode of the first transistor is connected to power input, and emitter is connected to power output end and is connected to drive end through the 3rd, the 6th resistance;
The collector electrode of transistor seconds is connected to the base stage of the first transistor through the 4th resistance, and base stage is connected to drive end, grounded-emitter connection;
The 3rd transistorized base stage is connected to power input, is connected to the collector electrode of transistor seconds through the 8th resistance through the 7th resistance, and emitter connects power input, is connected to the base stage of the first transistor, grounded collector through second resistance through first resistance;
The 5th resistance one is connected to the collector electrode of the first transistor, between another termination the 3rd, the 6th resistance; First electric capacity is connected between the emitter and ground of the first transistor, and second electric capacity is connected between the base stage and ground of the first transistor; The 3rd electric capacity one is connected between the 3rd, the 6th resistance, the other end ground; The 4th electric capacity is connected between power input and the 3rd transistor base.
3, fan control device according to claim 1 is characterized in that described sensible heat element is a thermistor.
4, fan control device according to claim 2 is characterized in that described sensible heat element is a thermistor.
5, according to claim 1,2,3 or 4 described fan control devices, it is characterized in that comprising a plurality of switching circuits, the drive end of each switching circuit connects a sensible heat element, and the power input of each switching circuit all can connect a fan.
6, fan control device according to claim 5 is characterized in that described switching circuit and corresponding sensible heat element thereof are positioned over different detectings place.
7, fan control device according to claim 5 is characterized in that the temperature difference of described each sensible heat element drives switching circuit.
8, a kind of fan control system of being made up of the described fan control device of a plurality of claims 1 is characterized in that each fan control device connects a fan, and each fan control device can be positioned over different detectings place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021512 CN2708010Y (en) | 2004-04-01 | 2004-04-01 | Fan control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021512 CN2708010Y (en) | 2004-04-01 | 2004-04-01 | Fan control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708010Y true CN2708010Y (en) | 2005-07-06 |
Family
ID=34849087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021512 Expired - Fee Related CN2708010Y (en) | 2004-04-01 | 2004-04-01 | Fan control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708010Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101192065B (en) * | 2006-11-20 | 2010-07-14 | 中兴通讯股份有限公司 | Heat radiating fan control device and method |
| CN101751108B (en) * | 2008-11-28 | 2012-12-26 | 英业达股份有限公司 | Computer system |
| CN104343714A (en) * | 2014-09-26 | 2015-02-11 | 迈普通信技术股份有限公司 | Circuit and device for controlling rotating speed of fan |
| CN111535915A (en) * | 2020-06-03 | 2020-08-14 | 龙城电装（常州）有限公司 | Control circuit for cooling fan controller |
| CN113931865A (en) * | 2021-10-20 | 2022-01-14 | 湖北芯擎科技有限公司 | Fan control circuit and temperature adjusting device |
-
2004
- 2004-04-01 CN CN 200420021512 patent/CN2708010Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101192065B (en) * | 2006-11-20 | 2010-07-14 | 中兴通讯股份有限公司 | Heat radiating fan control device and method |
| CN101751108B (en) * | 2008-11-28 | 2012-12-26 | 英业达股份有限公司 | Computer system |
| CN104343714A (en) * | 2014-09-26 | 2015-02-11 | 迈普通信技术股份有限公司 | Circuit and device for controlling rotating speed of fan |
| CN111535915A (en) * | 2020-06-03 | 2020-08-14 | 龙城电装（常州）有限公司 | Control circuit for cooling fan controller |
| CN111535915B (en) * | 2020-06-03 | 2021-11-26 | 龙城电装（常州）有限公司 | Control circuit for cooling fan controller |
| CN113931865A (en) * | 2021-10-20 | 2022-01-14 | 湖北芯擎科技有限公司 | Fan control circuit and temperature adjusting device |
| CN113931865B (en) * | 2021-10-20 | 2024-04-12 | 湖北芯擎科技有限公司 | Fan control circuit and temperature adjusting device |
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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: 20050706 Termination date: 20130401 |