TWI832189B - Fan driving structure - Google Patents

Abstract

A fan driving structure for connecting to a fan, comprising a base plate, a connecting port, a driving unit and a processing interface unit. The connecting port is disposed on the base plate and has a power supply positive terminal, a power supply negative terminal, a speed control end and a speed feedback end. The driving unit is disposed on the base plate and and electrically connected to the fan for outputting a driving signal. The processing interface unit is disposed on the base plate and and electrically connected to the connecting port and the driving unit. The processing interface unit generates different driving signals according to the type of information received by the connecting port. Thereby a control of the fan by transmission is achieved.

Description

Fan drive structure

The present invention relates to the field of fans, in particular to a fan driving structure.

Press, the cooling fan is a common heat dissipation structure. It can be used to provide electronic components, motor components or machinery that generates heat. It can start the cooling fan and extract the heat generated therein to help dissipate the heat and thereby achieve the purpose of heat dissipation and cooling. The purpose is to protect electronic, electrical or mechanical components and extend their lifespan to avoid damage and affect operation due to high temperatures. Therefore, today's common computer hosts, video recorders or photocopiers are equipped with There is a cooling fan.

When the fan is currently in use, in addition to the two basic power lines, there is also a control signal line to input the PWM signal and a feedback speed line to feed back the speed signal. This is used to control the fan speed and know the actual speed. However, the control signal is further required. line and feedback speed line to achieve more intelligent control. Traditional drive IC cannot meet such usage needs.

In order to allow existing fans to achieve intelligent control, the current approach is to replace traditional ICs with MCUs with better performance. However, this approach will lead to the following problems: 1. Replacing MCUs causes costs; 2. The replaced traditional ICs cause waste ; 3. Because it is replaced with an MCU, the overall characteristics and functions of the fan must be redesigned.

Therefore, how to solve the above-mentioned problems and deficiencies is the direction for improvement that the inventor of this case and related manufacturers engaged in this industry urgently want to study.

In order to improve the above-mentioned problems, the main purpose of the present invention is to provide a fan drive structure that adds a processing interface component to a fan equipped with a traditional drive IC to achieve intelligent control.

To achieve the above object, the present invention provides a fan drive structure connected to a fan. The fan drive structure includes a base board, a connection port, a drive unit, and a processing interface unit; the connection port is provided on the base board and has A positive terminal of the power supply, a negative terminal of the power supply, a speed control terminal and a speed feedback terminal; the drive unit is disposed on the substrate, the drive unit is electrically connected to the fan and outputs a drive signal; the processing interface unit is disposed on On the substrate, the processing interface unit is electrically connected to the drive unit and the connection port. The processing interface unit generates different drive signals according to different signal types received by the connection port, thereby achieving communication control of the fan.

Through the above structure, with minimal changes, fans that originally only had traditional driver ICs can be equipped with intelligent communication control capabilities, achieving the advantages of upgrading traditional fans at low cost.

1:Fan

11:Frame base

12:Stator group

13:Rotor group

2: Drive structure

21:Substrate

22:Connection port

221: Positive terminal of power supply

222: Negative terminal of power supply

223: Speed control terminal

224: Speed feedback terminal

23:Drive unit

24: Processing interface unit

Figure 1 is a structural block diagram of the fan drive structure of the present invention; Figure 2A is an exploded schematic diagram of a fan using the fan drive structure of the present invention; Figure 2B is a schematic diagram of a fan assembly using the fan drive structure of the present invention.

The above objects and structural and functional characteristics of the present invention will be explained based on the preferred embodiments of the accompanying drawings.

Please refer to Figure 1, Figure 2A and Figure 2B, which are structural block diagrams of the fan drive structure of the present invention, an exploded schematic diagram and a schematic assembly diagram of a fan using the fan drive structure of the present invention. The drive structure 2 of the present invention is applied to a fan 1 , in this embodiment the fan 1 is an axial flow fan, but it is not limited to this. For example Cross-flow fans, centrifugal fans or other types of fans can be replaced. The fan 1 has a frame 11, a stator assembly 12 and a rotor assembly 13. The structures of the above components are well known to those in the art and will not be repeated here. Go into details.

The driving structure 2 includes a substrate 21 , a connection port 22 disposed on the substrate 21 , a driving unit 23 disposed on the substrate 21 and a processing interface unit 24 disposed on the substrate 21 , the processing interface unit 24 It is electrically connected to the drive unit 23 and the connection port 22. The connection port 22 has a positive power terminal 221, a negative power terminal 222, a speed control terminal 223 and a speed feedback terminal 224. The speed control terminal 223 inputs a pulse. wide modulation signal (PWM), the speed feedback terminal 224 outputs a fan speed signal (FG), the substrate 21 is a flexible substrate or a printed circuit board, and the processing interface unit 24 is a microcontroller (Micro Control Unit) ).

The above-mentioned driving structure 2 is preferably installed inside the fan 1, or it can also be installed externally. In this embodiment, the driving structure 2 is installed on the frame base 11. Furthermore, the stator group 12 can be integrated on the base plate 21 to save space. The fan 1 is miniaturized. When the connection port 22 is connected to an external cable, the positive terminal 221 and the negative terminal 222 of the power supply provide power for operating the fan 1 and the driving structure 2. Under normal use conditions, the speed control terminal 223 receives The external pulse width modulation signal (PWM) controls the rotation speed, and the rotation speed feedback terminal 224 outputs the fan rotation speed signal (FG) to determine the actual rotation speed. At this time, the processing interface unit 24 has not received the intelligent communication signal and does not perform any action. The fan 1 is driven only through the drive unit 23; during intelligent communication, the intelligent communication signal is input from the speed control terminal 223 to the processing interface unit 24. The processing interface unit 24 analyzes the intelligent communication signal and then sends the result to The drive unit 23 drives the fan 1 .

In short, no matter what the external input signal is, the present invention first determines it through the processing interface unit 24. If it is determined to be a traditional control signal, no analysis processing is performed, and the driving unit 23 directly processes it. If the driving of the fan 1 is determined to be an intelligent control signal, it will first be analyzed and processed by the processing interface unit 24, and then the driving unit 23 will drive the fan 1, thereby adding a new A processing interface unit 24 upgrades a traditional fan into a smart fan.

To sum up, the present invention has the following advantages: 1. Reduces upgrade costs; 2. Reduces waste during upgrades; 3. Maintains original characteristics and functions without re-planning and design.

The present invention has been described in detail above. However, the above description is only one of the preferred embodiments of the present invention and cannot limit the scope of the present invention. That is to say, all equivalent changes and modifications made according to the application scope of the present invention should still fall within the scope of the patent of the present invention.

1:Fan

2: Drive structure

21:Substrate

22:Connection port

221: Positive terminal of power supply

222: Negative terminal of power supply

223: Speed control terminal

224: Speed feedback terminal

23:Drive unit

24: Processing interface unit

Claims (7)

A fan drive structure is connected to a fan. The fan drive structure includes: a substrate; a connection port, which is provided on the substrate and has a positive terminal of the power supply, a negative terminal of the power supply, a rotation speed control terminal and a rotation speed feedback terminal; A drive unit is disposed on the base plate. The drive unit is electrically connected to the fan and outputs a drive signal; and a processing interface unit is disposed on the base plate. The processing interface unit is electrically connected to the drive unit and the connection port. Connection, the processing interface unit generates different drive signals according to different signal types received by the connection port. By adding the processing interface unit, the fan is upgraded from a traditional fan to a smart fan, thereby achieving intelligent communication control of the fan. The fan driving structure as described in item 1 of the patent application scope, wherein the fan includes a frame base, a stator group and a rotor group. In the fan drive structure described in item 2 of the patent application, the drive unit is connected to the stator group. For the fan drive structure described in item 1 of the patent application, a pulse width modulation signal is input to the speed control terminal. In the fan drive structure described in item 1 of the patent application, the speed feedback terminal outputs a fan speed signal. In the fan drive structure described in item 1 of the patent application, the substrate is a flexible substrate. In the fan drive structure described in item 1 of the patent application, the processing interface unit is a microcontroller.

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