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Target fan starting method

A fan and target technology, which is applied in the electronic field, can solve problems such as insufficient, or when the rotor is in a certain position, the rotor has a large resistance to rotation, so as to improve the probability of successful startup, improve reliability, and reduce equipment maintenance costs.

Active Publication Date: 2018-06-01
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, if the magnetization amount of the permanent magnet is insufficient, or the rotor is located in a certain position, the resistance to rotation of the rotor may be relatively large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] like figure 2 As shown, Embodiment 1 of the present invention provides a method for starting a fan, and the method includes:

[0057] Step S00: Outputting the first driving voltage to drive the target fan;

[0058] The fan has a minimum operating voltage during normal operation, that is, an operating voltage that maintains the lowest rotational speed, such as 5V, a maximum rated operating voltage, that is, an operating voltage that maintains the highest rotational speed, such as 12V, and a starting voltage that is used to start the fan. The first driving voltage is usually set as the starting voltage of the fan, which can be the minimum operating voltage or slightly higher than the minimum operating voltage, such as 6V, so that the fan coil can obtain current, and the magnetic force between the fan and the magnet can overcome the rotor. static friction, so that the rotor drives the fan blades to rotate.

[0059] Step S20: judging whether the target fan starts normall...

Embodiment 2

[0086] like image 3 As shown, the method for starting the fan provided by the embodiment of the present invention includes:

[0087] Step S300: Outputting the first driving voltage to drive the target fan;

[0088] Step S320: judging whether the target fan starts normally;

[0089] If it is judged that the startup is normal, the startup process is ended;

[0090] If it is judged that the startup is abnormal, execute:

[0091] Step S340: reducing the first driving voltage to zero, and maintaining the output within a second preset time period;

[0092] After the second preset time period ends,

[0093] Step S360: switch to the maximum rated operating voltage to drive the target fan, and maintain the output within the first preset time period;

[0094] Go to step S320.

[0095] Through the above control process, when it is judged that the target fan starts abnormally, first reduce the drive voltage of the target fan to the minimum, that is, zero volts, and then increase it...

Embodiment 3

[0098] Embodiment 3 of the present invention provides a method for starting a fan on the basis of Embodiment 1 or Embodiment 2, such as Figure 4 As shown, after judging that the startup is abnormal, step S430 is also included: judging whether the number of cycles of switching to the second driving voltage is greater than M,

[0099] If it is greater than M, stop starting the target fan and give an early warning;

[0100] If it is less than M, execute the next step, where M is an integer greater than or equal to 1.

[0101] In a specific implementation, M can be set to 2, or 3, or 5, which can be adjusted according to software design requirements. Therefore, after a limited number of attempts to start, if it is still unsuccessful, stop starting the fan, consider the fan to be faulty, and give an early warning.

[0102] In specific implementation, the second driving voltage can gradually increase with the change of the set number of cycles M, but it is always lower than the m...

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PUM

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Abstract

The invention discloses a target fan starting method. The method includes the steps that a first driving voltage is output to drive a target fan; whether the target fan is started normally or not is judged; if it is judged that starting is normal, the starting process is ended; if it is judged that starting is abnormal, the first driving voltage is dropped to a third driving voltage; and the voltage is switched to a second driving voltage to drive the target fan, whether the target fan is started normally or not is judged continuously, and the second driving voltage is higher than the first driving voltage.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method for starting a fan. Background technique [0002] Air cooling is one of the mainstream heat dissipation methods for electronic equipment on the market. In air-cooled heat dissipation, the fan is the core component. One or more fans are installed at the air inlet and outlet of the electronic equipment to form an air duct to quickly dissipate the heat generated during the operation of the electronic equipment to ensure the working environment of the equipment. Temperature, to prevent the high temperature environment from damaging the device or deteriorating the performance of the device. [0003] The main structure of a DC fan is as follows: figure 1 As shown, wherein, the rotating shaft 11, the permanent magnet 14, and the fan blade (not shown) connected to the rotating shaft constitute the rotor 10, the mounting base 01, the coil 12 fixed on the casing 13 outside t...

Claims

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Application Information

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IPC IPC(8): F04D25/02F04D25/08F04D27/00F04D29/00F04D29/32G06F1/20
CPCF04D25/026F04D25/08F04D27/001F04D27/008F04D29/002F04D29/325G06F1/20
Inventor 刘洁
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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