CN201318303Y - Direct current fan - Google Patents
Direct current fan Download PDFInfo
- Publication number
- CN201318303Y CN201318303Y CNU2008201099705U CN200820109970U CN201318303Y CN 201318303 Y CN201318303 Y CN 201318303Y CN U2008201099705 U CNU2008201099705 U CN U2008201099705U CN 200820109970 U CN200820109970 U CN 200820109970U CN 201318303 Y CN201318303 Y CN 201318303Y
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- CN
- China
- Prior art keywords
- fan
- motor
- computer
- direct current
- steering control
- Prior art date
- 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 direct current fan, which is used for a computer. The direct current fan comprises an interface, a fan motor and a motor driving chip, wherein the interface is used for receiving the steering control signals of the computer; the fan motor is provided with a fan blade; and the motor driving chip is connected with the interface and the fan motor. The motor driving chip is provided with a first motor steering control pin; the interface is provided with a second steering control pin for receiving the steering control signals of the computer; and the second motor steering control pin is connected with the first motor steering control pin. The direct current fan adopts the fan motor driving chip which can control the corotation and the contrarotation of the direct current fan according to external input signals, thereby increasing the application function of the direct current fan. While the working environment of the computer is caused to be up to the standard by using the direct current fan, computer components are not required to be added additionally, thereby resulting in easy realization and control.
Description
Technical field
The utility model relates to sink, relates in particular to a kind of DC fan.
Background technique
In computer heat radiation system, adopt DC fan that central processing unit (CPU), video card, power supply or the computer system etc. of computer are dispelled the heat usually.The working environment of computer is not unalterable, computer may be worked at the environment that is arranged in its normal operating temperature range, also may in the harsher environment in surpassing its normal operating temperature range, work, for example, the machine room that does not have heating installation or air-conditioning in the winter time, perhaps in room temperature lower morning, the temperature of computer surrounding environment is lower than its normal working temperature, and some thermally sensitive device is with cisco unity malfunction in the computer.Simultaneously, present DC fan all designs under normal operating ambient temperature by computer, in use promptly, the blade of fan can only carry out air draught and air-supply according to pre-set fixing direction, that is to say, present DC fan can only one-way rotation, and can not rotate round about according to the operating ambient temperature of computer.The driving chip that can control the fan electromotor clockwise and anticlockwise according to the signal that receives has been arranged at present, but the chip that does not also have to have above-mentioned functions is applied to specifically in the computer, makes DC fan in the computer can either just change and can reverse.
The model utility content
In order to make the DC fan in the computer promptly can just change also and can reverse, the utility model provides a kind of DC fan, comprising:
The interface that is used for the receiving computer steering controling signal;
Be provided with the fan electromotor of fan blade; With
Motor drive ic is connected with described fan electromotor with described interface;
Described motor drive ic is provided with first motor steering control pin;
Described interface is provided with to be used to receive from second of the steering controling signal of described computer and turns to the control pin;
Described second motor steering control pin is connected with described first motor steering control pin.
Described motor drive ic is for can drive motor carrying out the chip of forward or reverse.
Described motor drive ic is for judging that described fan electromotor carries out the chip of forward or reverse according to the described steering controling signal that receives.
Compared with prior art, the utlity model has following beneficial effect:
The utility model adopts can control the fan electromotor driving chip of DC fan clockwise and anticlockwise according to external input signal, thereby has increased the application function of DC fan.When using DC fan to make the working environment of computer reach standard, do not need additionally to increase machine element, realization and control get up all to be very easy to.
Description of drawings
Fig. 1 is the utility model embodiment's a DC fan schematic representation.
Embodiment
The utility model utilizes the existing chip that can drive the dc fan motor clockwise and anticlockwise according to outer increase control signal, realizes the forward or reverse of fan.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Embodiment of the present utility model has increased a PIN again on the basis of 3PIN of active computer (pin) or 4PIN DC fan, suppose that existing DC fan is the 4PIN DC fan, then the PIN that increases is called 5PIN, this 5PIN is arranged on the fan connection interface, as shown in Figure 1, fan connection interface among Fig. 1 comprises 4 pins, wherein, pin one, 2 are used for respectively and power cathode, the anodal connection, pin 3FG (Frequency Generator, FIT Frequency Generator) is used for sending the information of motor speed to system, pin 4 pulsewidth modulation (Pusle Width Modumation, PWM) pin is used for the speed governing requirement of receiving system, the real-time regulated rotation speed of the fan.The connecting line of respective pin is not shown on 4 pins of fan connection interface and the dc fan motor driving chip.
In order to make the DC fan can clockwise and anticlockwise, it be the fan electromotor driving chip of SANYO LB11988H that the dc fan motor driving chip of present embodiment adopts model.The pin FR of the control fan clockwise and anticlockwise on 5PIN and this dc fan motor driving chip (Forward Reverse switching, forwards/reverse switch) connects.
In the present embodiment DC fan is connected with computer system, represent the input signal that the fan electromotor driving chip of computer system generation can be discerned with IS (Input Signal), 5PIN receives this input signal, and this input signal is sent to FR on the dc fan motor driving chip.Input signal in the present embodiment is high/low level.When FR received high level signal, the motor drive ic drive motor just changeed, when FR receives low level signal, and the counter-rotating of motor drive ic drive motor.
Because present embodiment comes the clockwise and anticlockwise of the steering controling signal of receiving computer system with the control fan electromotor by increase pin on the fan connection interface, therefore, the computer card that is connected with the connection interface of fan also changes accordingly, for example, follow the wind interface that fan links to each other of mainboard has also increased a pin and has been connected to above-mentioned 5PIN, simultaneously, the temperature-control circuit of computer system can send high level or low level by the circuit of drawing to 5PIN according to the variation of external temperature.When temperature control circuitry detects the computer current operating temperature just often, send high level signal, after 5PIN receives high level signal, send to FR, motor drive ic just changes according to the high level control motor that FR receives; When temperature control circuitry detects the computer current operating temperature and is lower than normal working temperature, send low level signal, after 5PIN receives low level signal, send to FR, the low level control motor counter-rotating that motor drive ic receives according to FR.
Certainly, also can adopt other any modes, make 5PIN receive an input signal, as long as the form of this input signal can be received by the fan electromotor driving chip and recognize.
When using the DC fan of present embodiment, will can have problems or the parts of risk are installed on the rear that heat that the DC fan counter-rotating of present embodiment sends heating component blows to the wind direction of the parts that need heating being lower than to work under the normal working temperature of computer.Like this, just can make full use of the heat that heat-dissipating part sends, heat the parts in being lower than the normal working temperature environment, enable proper functioning.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a DC fan is used for computer, comprising:
The interface that is used for the receiving computer steering controling signal;
Be provided with the fan electromotor of fan blade; With
Motor drive ic is connected with described fan electromotor with described interface;
It is characterized in that:
Described motor drive ic is provided with first motor steering control pin;
Described interface is provided with to be used to receive from second of the steering controling signal of described computer and turns to the control pin;
Described second motor steering control pin is connected with described first motor steering control pin.
2. DC fan as claimed in claim 1 is characterized in that, described motor drive ic is for can drive motor carrying out the chip of forward or reverse.
3. DC fan as claimed in claim 1 is characterized in that described motor drive ic is for judging that described fan electromotor carries out the chip of forward or reverse according to the described steering controling signal that receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201099705U CN201318303Y (en) | 2008-08-26 | 2008-08-26 | Direct current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201099705U CN201318303Y (en) | 2008-08-26 | 2008-08-26 | Direct current fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318303Y true CN201318303Y (en) | 2009-09-30 |
Family
ID=41197068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201099705U Expired - Lifetime CN201318303Y (en) | 2008-08-26 | 2008-08-26 | Direct current fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318303Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817862A (en) * | 2012-08-29 | 2012-12-12 | 华为技术有限公司 | Method, device and system for controlling fan |
| CN102937771A (en) * | 2012-11-06 | 2013-02-20 | 浙江宇视科技有限公司 | Device for heating and radiating camera |
| CN102968166A (en) * | 2012-12-12 | 2013-03-13 | 曙光信息产业(北京)有限公司 | Radiator of server system |
-
2008
- 2008-08-26 CN CNU2008201099705U patent/CN201318303Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817862A (en) * | 2012-08-29 | 2012-12-12 | 华为技术有限公司 | Method, device and system for controlling fan |
| WO2014032411A1 (en) * | 2012-08-29 | 2014-03-06 | 华为技术有限公司 | Fan control method, device and system |
| CN102817862B (en) * | 2012-08-29 | 2016-08-10 | 华为技术有限公司 | A kind of control method for fan, Apparatus and system |
| US10060438B2 (en) | 2012-08-29 | 2018-08-28 | Huawei Technologies Co., Ltd. | Fan control method, apparatus, and system |
| CN102937771A (en) * | 2012-11-06 | 2013-02-20 | 浙江宇视科技有限公司 | Device for heating and radiating camera |
| CN102937771B (en) * | 2012-11-06 | 2015-09-09 | 浙江宇视科技有限公司 | A kind of heating of video camera and the device of heat radiation |
| CN102968166A (en) * | 2012-12-12 | 2013-03-13 | 曙光信息产业(北京)有限公司 | Radiator of server system |
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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 |
Granted publication date: 20090930 |
|
| CX01 | Expiry of patent term |