CN2884283Y - Temp. controller for cooling fan - Google Patents
Temp. controller for cooling fan Download PDFInfo
- Publication number
- CN2884283Y CN2884283Y CN 200520035069 CN200520035069U CN2884283Y CN 2884283 Y CN2884283 Y CN 2884283Y CN 200520035069 CN200520035069 CN 200520035069 CN 200520035069 U CN200520035069 U CN 200520035069U CN 2884283 Y CN2884283 Y CN 2884283Y
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- CN
- China
- Prior art keywords
- fan
- field effect
- effect transistor
- build
- out resistor
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- 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 - Lifetime
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Abstract
The utility model provides a temperature control device for cooling fans. The devices consists of a DC power E, a DC fan FAN, a temperature sensor Telta, a temperature signal processor CPU, optical coupler matched resistances R1 and R2, an optical coupling T1, a mofset-matching resistances R3 and R4, a mofset T2, and a fly-wheel diode D. The back of the temperature sensor Telta is connected with the temperature signal processor CPU, which connects with the optical coupling T1. The optical coupling T1 links with the mofset T2 on the back. The DC fan FAN is the load of the mofset T2. The revolution of the cooling fan may get faster with the temperature rise, or becomes slower or stops due to the temperature reduction, thus saving the power energy and improving the reliability.
Description
Affiliated technical field
The utility model belongs to the attemperating unit of controller for heat sink, particularly cooling blower in the e-machine case.
Background technology
The employed cooling blower of heat radiation all is once the commentaries on classics of starting shooting in the general e-machine case, and shutdown just stops.Therefore blower fan is regardless of the height of ambient temperature and the temperature inside the box, and constant speed is rotated all the time, and this has just caused the shortening of waste of electric energy and fan life.
Summary of the invention
The purpose that designs this device is exactly the waste of energy for fear of cooling blower, prolongs the serviceable life of cooling blower.In order to realize this purpose, this device is made up of direct supply E, dc fan FAN, temperature sensor θ, temperature signal processor CPU, optocoupler build-out resistor R1, R2, photo-coupler T1, field effect transistor build-out resistor R3, R4, field effect transistor T2 and sustained diode; The input end of the signal end of temperature sensor θ (5) jointing temp signal processor CPU, the output terminal of temperature signal processor CPU (1) connects the light emitting diode positive pole (+) of optocoupler build-out resistor R1 and photo-coupler T1, its output terminal (2) connects the other end of optocoupler build-out resistor R1 and the light emitting diode negative pole (-) of optocoupler build-out resistor R2 and photo-coupler T1, and the other end (6) of the other end of optocoupler build-out resistor R2 and temperature sensor θ and the public input end of temperature signal processor CPU join; The collector C of phototriode connects the negative pole (-) of sustained diode, the positive pole (+) of dc fan FAN and the positive pole (E+) of direct supply E among the photo-coupler T1, the emitter e of phototriode meets field effect transistor build-out resistor R3, R4 among the photo-coupler T1, the source S of another termination field effect transistor T2 of field effect transistor build-out resistor R3 and the negative pole (E-) of direct supply E, the grid G of another termination field effect transistor T2 of field effect transistor build-out resistor R4, the drain D of field effect transistor T2 connects the positive pole (+) of sustained diode and the negative pole (-) of dc fan FAN.
Because the utility model used a control circuit, the rotating speed that makes blower fan with the temperature inside the box height and different, does not change or slow-speed quick or high speed rotating when temperature is high according to surrounding environment when temperature is low.So promptly guaranteed the needs of heat radiation, saved electric energy and the serviceable life that has prolonged blower fan again, the reliability of entire machine is improved.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model
Embodiment
As shown in Figure 1, this device is made up of direct supply E, dc fan FAN, temperature sensor θ, temperature signal processor CPU, optocoupler build-out resistor R1, R2, photo-coupler T1, field effect transistor build-out resistor R3, R4, field effect transistor T2 and sustained diode; The input end of the signal end of temperature sensor θ (5) jointing temp signal processor CPU, the output terminal of temperature signal processor CPU (1) connects the light emitting diode positive pole (+) of optocoupler build-out resistor R1 and photo-coupler T1, and the other end and the light emitting diode negative pole (-) of optocoupler build-out resistor R2 and photo-coupler T1, the other end and the other end (6) of temperature sensor θ and the public input end of temperature signal processor CPU of optocoupler build-out resistor R2 that its output terminal (2) meets optocoupler build-out resistor R1 join; The collector C of phototriode connects the negative pole (-) of sustained diode, the positive pole (+) of dc fan FAN and the positive pole (E+) of direct supply E among the photo-coupler T1, the emitter e of phototriode meets field effect transistor build-out resistor R3, R4 among the photo-coupler T1, the source S of another termination field effect transistor T2 of field effect transistor build-out resistor R3 and the negative pole (E-) of direct supply E, the grid G of another termination field effect transistor T2 of field effect transistor build-out resistor R4, the drain D of field effect transistor T2 connects the positive pole (+) of sustained diode and the negative pole (-) of dc fan FAN.
Its principle of work is: θ measures temperature signal by temperature sensor, and feed signals processor CPU (for example: TMS320F240) make prime and handle, deliver to photo-coupler T1 after the processing, temperature control signals is delivered to the temperature control power amplifier.Purpose with optocoupler is that prime signal processing circuit and back level power amplifier are isolated, and is convenient to handle and improve anti-interference.Power controlling field effect transistor T2 is removed in the output of photo-coupler T1 again, and when temperature was high, circuit made field effect transistor T2 conducting, and tube voltage drop diminishes, and the drain D of field effect transistor T2 meets dc fan FAN, and this moment, dc fan FAN just changeed comparatively fast; When temperature was low, the tube voltage drop of field effect transistor T2 became greatly because of the control signal effect, and rotation speed of fan is slack-off.It is better than using other power device to use power field effect pipe T2, mainly is that its control characteristic and dc fan FAN characteristic coupling is suitable, has significantly improved reliability again.
Control circuit has input terminal (1), (2) and lead-out terminal (3), (4) and back level power supply negative pole (E-).Input terminal (1) is a signal input part, and (2) are the prime common ports.(1) signal is from the output of preceding level processor CPU, the input jointing temp sensor θ of preceding level processor CPU, and terminal (1) obtains like this is the signal of temperature sensor θ signal after treated.Terminal (1) connects the light emitting diode of photo-coupler T1, when the signal level of terminal (1) is high, and light-emitting diode brightening, when level hanged down, light-emitting diode luminance reduced.Optocoupler build-out resistor R1, R2 make optocoupler be operated in proper operation district and impedance matching resistance, its connection can with figure in different, but as long as optocoupler can mate ground work, the receiving unit of photo-coupler T1 is a phototriode, the grid G of field effect transistor T2 is received in the output of this triode, and phototriode and field effect transistor T2 use the power supply of back one-level.This power supply can be about 12～24 volts of direct currents.This power supply is consistent with the required power supply of dc fan FAN.The signal that field effect transistor T2 grid G perception front optocoupler is sent here, drain D connects dc fan negative pole (-), and terminal is (4) and (3), so dc fan FAN is the load of field effect transistor T2, and power supply negative terminal (E-) promptly is a field effect transistor T2 source S end.Be connected to field effect transistor build-out resistor R3, R4 between photo-coupler T1 and the field effect transistor T2, its effect is to make field effect transistor T2 set up suitable working point, can operate as normal.What and resistance of resistance can change, and connection also can change to some extent.D is a fly-wheel diode with dc fan FAN diode connected in parallel, and it is because of dc fan FAN is an inductive load, damage because of the inductance effect produces superpotential for avoiding field effect transistor T2, and the protecting component that increases.So the voltage at dc fan FAN two ends is subjected to the control of field effect transistor T2 fully, when the external temperature height, field effect transistor T2 conducting resistance diminishes, and dc fan FAN goes up the voltage height, changes soon.Otherwise external temperature is low, and blower fan changes slowly, even stall.Realized temperature control blower fan scheme by temperature control dc fan FAN rotating speed.
Claims (1)
1. the attemperating unit of a cooling blower, it is made up of direct supply E, dc fan FAN; It is characterized in that: it also has temperature sensor θ, temperature signal processor CPU, optocoupler build-out resistor R1, R2, photo-coupler T1, field effect transistor build-out resistor R3, R4, field effect transistor T2 and sustained diode; The input end of the signal end of temperature sensor θ (5) jointing temp signal processor CPU, the output terminal of temperature signal processor CPU (1) connects the light emitting diode positive pole (+) of optocoupler build-out resistor R1 and photo-coupler T1, its output terminal (2) connects the other end of optocoupler build-out resistor R1 and the light emitting diode negative pole (-) of optocoupler build-out resistor R2 and photo-coupler T1, and the other end (6) of the other end of optocoupler build-out resistor R2 and temperature sensor θ and the public input end of temperature signal processor CPU join; The collector C of phototriode connects the negative pole (-) of sustained diode, the positive pole (+) of dc fan FAN and the positive pole (E+) of direct supply E among the photo-coupler T1, the emitter e of phototriode meets field effect transistor build-out resistor R3, R4 among the photo-coupler T1, the source S of another termination field effect transistor T2 of field effect transistor build-out resistor R3 and the negative pole (E-) of direct supply E, the grid G of another termination field effect transistor T2 of field effect transistor build-out resistor R4, the drain D of field effect transistor T2 connects the positive pole (+) of sustained diode and the negative pole (-) of dc fan FAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035069 CN2884283Y (en) | 2005-08-11 | 2005-08-11 | Temp. controller for cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035069 CN2884283Y (en) | 2005-08-11 | 2005-08-11 | Temp. controller for cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884283Y true CN2884283Y (en) | 2007-03-28 |
Family
ID=37957338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035069 Expired - Lifetime CN2884283Y (en) | 2005-08-11 | 2005-08-11 | Temp. controller for cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884283Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839251A (en) * | 2010-06-12 | 2010-09-22 | 中矿金业股份有限公司 | Automatic-speed-regulation energy-saving control system for shaft hoisting cooling fan |
-
2005
- 2005-08-11 CN CN 200520035069 patent/CN2884283Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839251A (en) * | 2010-06-12 | 2010-09-22 | 中矿金业股份有限公司 | Automatic-speed-regulation energy-saving control system for shaft hoisting cooling fan |
| CN101839251B (en) * | 2010-06-12 | 2013-02-20 | 中矿金业股份有限公司 | Automatic-speed-regulation energy-saving control system for shaft hoisting cooling fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU INSTITUTE OF ELECTRONICS CO. Free format text: FORMER NAME OR ADDRESS: CHENGDU HOPE ELECTRONIC RESEARCH INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: No. 181, Airport Road, Sichuan, Chengdu: 610225 Patentee after: Chengdu Hope Electronic Institute Co., Ltd. Address before: No. 181, Airport Road, Sichuan, Chengdu: 610225 Patentee before: Xiwang Electronic Research Inst. Chengdu City |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hope Senlan Science & Technology Corp., Ltd. Assignor: Chengdu Hope Electronic Institute Co., Ltd. Contract fulfillment period: 2007.6.28 to 2012.6.28 Contract record no.: 2009510000114 Denomination of utility model: Temp. controller for cooling fan Granted publication date: 20070328 License type: Exclusive license Record date: 20091020 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.6.28 TO 2012.6.28; CHANGE OF CONTRACT Name of requester: HOPE SENLAN SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20091020 |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150811 Granted publication date: 20070328 |
|
| EXPY | Termination of patent right or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Xianzhi Document name: Notification of Expiration of Patent Right Duration |