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RC-based fan stepless speed regulation circuit, fan and speed regulation method

A technology of stepless speed regulation and speed regulation method, which is applied in the direction of machines/engines, electrical components, mechanical equipment, etc., and can solve the problems of no analog output voltage and difficulty in speed regulation of cooling fans

Pending Publication Date: 2021-09-07
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the voltage signal control mode, a wide range of analog signals (such as 1 ~ 10V) are required as the fan speed regulation signal, but the controller of the auxiliary converter does not have the function of analog output voltage, only the function of pulse signal generation. Cooling fan speed regulation brings difficulties

Method used

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  • RC-based fan stepless speed regulation circuit, fan and speed regulation method
  • RC-based fan stepless speed regulation circuit, fan and speed regulation method
  • RC-based fan stepless speed regulation circuit, fan and speed regulation method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 As shown, the fan stepless speed regulation circuit based on RC in this embodiment includes a pulse generating unit and an RC voltage conversion unit, the output of the pulse generating unit is connected to the input of the RC voltage converting unit; the pulse generating unit is used to generate The pulse signal with adjustable air ratio, the RC voltage conversion unit is used to convert the pulse signal into a DC voltage signal to form a fan speed regulation signal. The above circuit adjusts the duty cycle of the output pulse through the pulse generation unit, and can adjust the size of the output DC voltage signal (that is, the speed regulation signal) of the RC voltage conversion unit, thereby realizing the speed regulation of the fan (wherein the voltage signal and the fan speed are positive linear relationship); t...

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Abstract

The invention discloses an RC-based fan stepless speed regulation circuit, a fan and a speed regulation method. The circuit comprises a pulse generation unit and an RC voltage conversion unit, and the output end of the pulse generation unit is connected with the input end of the RC voltage conversion unit; and the pulse generation unit is used for generating pulse signals with adjustable duty ratios, and the RC voltage conversion unit is used for converting the pulse signals into voltage signals so as to form fan speed regulation signals. The RC-based fan stepless speed regulation circuit has the advantages of being simple in structure, easy to implement, low in cost, capable of forming direct-current voltage speed regulation signals through pulse signals and the like.

Description

technical field [0001] The invention mainly relates to the technical field of fans, in particular to an RC-based fan stepless speed regulation circuit, a fan and a speed regulation method. Background technique [0002] At present, the speed regulation methods of auxiliary converter cooling fan can be divided into: star-delta conversion mode, two-fourth conversion mode, pulse control mode, voltage signal control mode, etc. In the voltage signal control mode, a wide range of analog signals (such as 1 ~ 10V) are required as the fan speed regulation signal, but the controller of the auxiliary converter does not have the function of analog output voltage, only the function of pulse signal generation. Cooling fan speed regulation has brought difficulties. Contents of the invention [0003] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a simple structure, easy to implemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F04D25/08H05K7/20H02M1/00
CPCF04D27/004F04D25/08H05K7/2019H02M1/00
Inventor 耿志东谢伟饶沛南宋森易滔杨浩陈备
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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