Case fan control circuit board

Abstract

The utility model discloses a case fan control circuit board which comprises a plurality of power supply chip interfaces suitable for power supply chips of different models, and when the case fan control circuit board works, only one power supply chip interface is internally provided with a power supply chip. The voltage supplied to the fan by the case fan control circuit board is determined by the model of a power supply chip inserted into the power supply chip interface. The power supply chips of different models are selected, so that the voltage provided by the fan control circuit board conforms to the rated voltage of the fan, the fan in the case operates stably, the working performance and efficiency of the fan are maintained, the heat dissipation effect of the fan is guaranteed, and the case can work normally.

Description

Technical Field

[0001] The utility model relates to an industrial case, in particular to a case fan control circuit board. Background Art

[0002] In existing computers, in order to ensure the normal and stable operation of the computer, it is necessary to maintain the operating temperature of the hardware in the chassis within a reasonable range. Usually, a fan is set in the chassis to accelerate the air flow through the fan to bring the heat in the chassis out of the chassis.

[0003] In order to control the operation of the fan, a fan control circuit board (PCB Printed Circuit Board) is usually provided in the chassis. In the prior art, a power chip is fixedly provided in the fan control circuit board to provide a stable voltage for the fan. The working voltage of the fan is determined by the model of the voltage chip. If the power chip is 12V, the fan control circuit board provides a 12V voltage for the fan. If the power chip is 48V, the fan control circuit board provides a 12V voltage for the fan. If the model of the power chip corresponds to the rated voltage of the fan, the fan runs stably and can maintain good performance; if the model of the power chip does not correspond to the rated voltage of the fan, the fan operation is not only unstable, but also the working performance and efficiency are reduced, resulting in a decrease in the heat dissipation efficiency of the fan. In the actual process of the computer, due to various reasons, the model of the power chip of the fan control circuit board usually does not correspond to the rated voltage of the connected fan, which affects the normal operation of the chassis. Utility Model Content

[0004] In view of the defects existing in the prior art, the present application provides a chassis fan control circuit board to solve technical problems in the prior art such as the model of the power chip of the fan control circuit board does not correspond to the rated voltage of the connected fan, thereby affecting the normal operation of the chassis.

[0005] In order to achieve the purpose of the above invention, the technical solution provided by this application is as follows:

[0006] A chassis fan control circuit board is arranged in a chassis, and the chassis fan control circuit board is electrically connected to a fan. It is characterized in that the chassis fan control circuit board includes multiple power chip interfaces suitable for different models of power chips. When the chassis fan control circuit board is working, only one power chip interface is provided with a power chip, and the voltage supplied to the fan by the chassis fan control circuit board is determined by the model of the power chip inserted into the power chip interface.

[0007] In one embodiment, the chassis fan control circuit board includes a fan socket into which a plug of a fan can be inserted.

[0008] In one embodiment, the chassis fan control circuit board includes a wind speed control module for controlling the fan speed.

[0009] In one embodiment, the wind speed control module adjusts the fan speed by adjusting the PWM duty cycle of the fan.

[0010] In one embodiment, the wind speed control module includes a dip switch and a potentiometer, and the wind speed control module can select one of the dip switch and the potentiometer to control the speed of the fan.

[0011] In one embodiment, the dip switch includes five speed adjustments, wherein the five speeds include 0% rated speed, 25% rated speed, 50% rated speed, 75% rated speed and 100% rated speed in sequence; the potentiometer is used to adjust the fan speed by rotating the potentiometer handle.

[0012] In one embodiment, the chassis fan control circuit board also includes a timer chip, and the timer chip can be constructed as a pulse oscillator with an adjustable duty cycle.

[0013] In one embodiment, the chassis fan control circuit board is a double-sided board, and the power chip interface includes a 48V power chip interface and a 12V power chip interface. The 48V power chip interface is arranged on the top layer of the chassis fan control circuit board, and the 12V power chip interface is arranged on the bottom layer of the chassis fan control circuit board.

[0014] In one embodiment, the chassis fan control circuit board is 20 mm wide and 80 mm long, and mounting holes are provided at the four corners of the chassis fan control circuit board. Bolts pass through the mounting holes to fix the chassis fan control circuit board to the chassis.

[0015] In one embodiment, the line connecting the centers of the four mounting holes is parallel to the edge of the chassis fan control circuit board, the distance between the centers of two mounting holes whose centers are parallel to the long side of the chassis fan control circuit board is 70 mm, and the distance between the centers of two mounting holes whose centers are parallel to the short side of the chassis fan control circuit board is 12 mm.

[0016] The chassis fan control circuit board of this application has achieved the following positive and beneficial effects through practice:

[0017] The chassis fan control circuit board in the present application is provided with a plurality of power chip interfaces suitable for different types of power chips. By selecting different types of power chips, the voltage provided by the fan control circuit board meets the rated voltage of the fan, so that the fan in the chassis runs stably, the working performance and efficiency of the fan are maintained, the heat dissipation effect of the fan is guaranteed, and the chassis can work normally;

[0018] The present application can efficiently and accurately control the speed of the fan by adjusting the PWM duty cycle of the fan, effectively reducing the fan's low power consumption and extending the fan's life; a timer chip is provided on the fan control circuit board, which can reduce the influence of the high-frequency circuit on the fan control circuit board's control of the fan speed, and improve the control accuracy of the fan speed;

[0019] The chassis fan control circuit board in the present application occupies a small area, has a wide range of applications, and can be installed in chassis products of various models. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the top structure of the chassis fan control circuit board according to an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the underlying structure of the chassis fan control circuit board of the embodiment of the present application.

[0022] Figure markings: 1-fan control circuit board, 2-fan socket, 3-wind speed control module, 301-dip switch, 302-potentiometer, 4-power chip interface, 401-48V power chip interface, 402-12V power chip interface, 5-timer chip, 6-mounting hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0024] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0026] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0027] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 2 As shown, this embodiment provides a chassis fan control circuit board. The chassis fan control circuit board 1 is arranged in the chassis. The chassis fan control circuit board 1 is electrically connected to the fan. The chassis fan control circuit board 1 includes multiple power chip interfaces 4 suitable for different models of power chips. When the chassis fan control circuit board 1 is working, only one power chip interface 4 is provided with a power chip. The voltage supplied to the fan by the chassis fan control circuit board 1 is determined by the model of the power chip inserted into the power chip interface 4.

[0029] The chassis fan control circuit board 1 includes a fan socket 2, and the plug of the fan is inserted into the fan socket 2 so that the fan control circuit board 1 is electrically connected to the fan. The chassis fan control circuit board 1 also includes a wind speed control module 3 for controlling the fan speed. In this embodiment, the wind speed control module 3 adjusts the fan speed by adjusting the PWM duty cycle of the fan, thereby changing the temperature and workload parameters of the key hardware in the chassis until the hardware operating parameters are as close to their respective set values ​​as possible. PWM (Pulse Width Modulation) is a technology that uses pulses to output analog signals. PWM is generally a square wave signal with a fixed period. By modulating the duty cycle of the square wave, the output time of the high / low level of the square wave within a period can be adjusted, thereby adjusting the operating state of the device or the execution degree of the function. By using PWM to adjust the fan speed, the fan adjustment efficiency can be improved, the fan working noise can be reduced, the fan adjustment range is wide, the fan element control accuracy is improved, and the life of the cooling fan is not affected, the stability is good, the motor magnetism is not affected, the failure rate is low, the application equipment is wide, the technology is mature, the customization requirements are met, the power consumption is effectively reduced, and the fan life is extended.

[0030] like Figure 1As shown, in this embodiment, the wind speed control module 3 includes a dip switch 301 and a potentiometer 302. The wind speed control module 3 can select one of the dip switch 301 and the potentiometer 302 to control the speed of the fan. The dip switch 301 includes five gear speed adjustment, wherein the five gear speeds include 0% rated speed, 25% rated speed, 50% rated speed, 75% rated speed and 100% rated speed in sequence; the potentiometer 302 is adjusted by rotating the potentiometer handle to adjust the fan speed.

[0031] The chassis fan control circuit board 1 also includes a timer chip 5, which is a pulse oscillator that can be built into a duty cycle adjustable to avoid the influence of the high-frequency circuit on the wind speed control module 3. In this embodiment, the timer chip 5 is a NE555 timer chip.

[0032] In this embodiment, the chassis fan control circuit board 1 is a double-sided board, and the power chip interface 4 includes a 48V power chip interface 401 and a 12V power chip interface 402. The 48V power chip interface 401 is arranged on the top layer (Top Layer) of the chassis fan control circuit board 1, and the 12V power chip interface 402 is arranged on the bottom layer (Bottom Layer) of the chassis fan control circuit board 1. The fan socket 2 and the wind speed control module are both arranged on the top layer of the chassis fan control circuit board 1, and the timer chip 5 and the 12V power chip interface 402 are arranged on the bottom layer of the chassis fan control circuit board 1.

[0033] The width of the chassis fan control circuit board 1 is 20 mm and the length is 80 mm. Mounting holes 6 are set at the four corners of the chassis fan control circuit board 1. Bolts pass through the mounting holes 6 to fix the chassis fan control circuit board 1 on the chassis. The center line of the four mounting holes 6 is parallel to the edge of the chassis fan control circuit board 1. The distance between the centers of the two mounting holes 6 whose center line is parallel to the long side of the chassis fan control circuit board 1 is 70 mm, and the distance between the centers of the two mounting holes 6 whose center line is parallel to the short side of the chassis fan control circuit board 1 is 12 mm.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A chassis fan control circuit board, the chassis fan control circuit board is arranged in a chassis, the chassis fan control circuit board is electrically connected to a fan, and is characterized in that: The chassis fan control circuit board includes multiple power chip interfaces suitable for different models of power chips. When the chassis fan control circuit board is working, only one power chip interface is equipped with a power chip. The voltage supplied to the fan by the chassis fan control circuit board is determined by the model of the power chip inserted into the power chip interface.

2. The chassis fan control circuit board according to claim 1, characterized in that: The chassis fan control circuit board comprises a fan socket into which a fan plug can be inserted.

3. The chassis fan control circuit board according to claim 1, characterized in that: The chassis fan control circuit board includes a wind speed control module for controlling the fan speed.

4. The chassis fan control circuit board according to claim 3, characterized in that: The wind speed control module adjusts the fan speed by adjusting the PWM duty cycle of the fan.

5. The chassis fan control circuit board according to claim 4, characterized in that: The wind speed control module includes a dip switch and a potentiometer, and the wind speed control module can select one of the dip switch and the potentiometer to control the rotation speed of the fan.

6. The chassis fan control circuit board according to claim 5, characterized in that: The dip switch includes five gears of speed adjustment, wherein the five gears of speed include 0% rated speed, 25% rated speed, 50% rated speed, 75% rated speed and 100% rated speed respectively; the potentiometer is used to adjust the fan speed by rotating the potentiometer handle.

7. The chassis fan control circuit board according to claim 4, characterized in that: The chassis fan control circuit board also includes a timer chip, and the timer chip can be constructed as a pulse oscillator with an adjustable duty cycle.

8. The chassis fan control circuit board according to claim 1, characterized in that: The chassis fan control circuit board is a double-sided board, and the power chip interface includes a 48V power chip interface and a 12V power chip interface. The 48V power chip interface is arranged on the top layer of the chassis fan control circuit board, and the 12V power chip interface is arranged on the bottom layer of the chassis fan control circuit board.

9. The chassis fan control circuit board according to claim 1, characterized in that: The chassis fan control circuit board has a width of 20 mm and a length of 80 mm. Mounting holes are arranged at the four corners of the chassis fan control circuit board. Bolts pass through the mounting holes to fix the chassis fan control circuit board on the chassis.

10. The chassis fan control circuit board according to claim 9, characterized in that: The line connecting the centers of the four mounting holes is parallel to the edge of the chassis fan control circuit board, the distance between the centers of the two mounting holes whose centers are parallel to the long side of the chassis fan control circuit board is 70 mm, and the distance between the centers of the two mounting holes whose centers are parallel to the short side of the chassis fan control circuit board is 12 mm.

Images