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Alternating current fan speed regulation circuit

An AC power and fan technology, applied in the direction of AC power input conversion to AC power output, electrical components, non-electric variable control, etc., can solve the problems of poor speed regulation effect, reduce the heat dissipation performance of the radiator, etc., to prolong the life of the fan, improve The effect of frequency conversion speed regulation and the effect of reducing fan noise

Pending Publication Date: 2020-12-01
EAST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an AC fan speed regulation circuit to solve the problem of poor speed regulation effect and reduce the heat dissipation performance of the radiator in the prior art

Method used

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  • Alternating current fan speed regulation circuit
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Embodiment Construction

[0022] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following description The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] see figure 1 As shown, this embodiment provides an AC fan speed regulation circuit, including:

[0024] The power factor correction module 11 is used to increase the voltage and improve the power factor, and convert the AC power of the input AC power supply into the DC power required by the inverter module 12; ...

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Abstract

The invention discloses an alternating current fan speed regulation circuit. The circuit comprises an inversion module used for outputting alternating current to an alternating current fan, an infrared thermometer used for measuring the temperature of a radiator in a non-contact manner, and a control module used for generating a control signal according to the temperature measured by the infraredthermometer and controlling the frequency of the alternating current output by the inversion module. According to the alternating current fan speed regulation circuit provided by the embodiment, the temperature of the radiator is measured in a non-contact manner through the infrared thermometer, and the control module generates the control signal according to the temperature measured by the infrared thermometer and controls the frequency of the alternating current output by the inversion module, so that the frequency conversion speed regulation of the alternating current fan is realized. Due to the fact that the infrared thermometer does not need to be contacted with the radiator and does not occupy the heat dissipation space, the frequency conversion speed regulation of the alternating current fan can be realized, the service life of the fan is prolonged, the noise of the fan is reduced, the frequency conversion speed regulation precision can be ensured, and the frequency conversion speed regulation effect and the heat dissipation effect of the radiator are improved.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, in particular to an AC fan speed regulating circuit. Background technique [0002] Currently, an AC fan is generally used to dissipate heat from a device or the like. If there is no speed regulation function, the fan will run at high speed for a long time, which not only increases the wear and tear of the fan, reduces the life of the fan, but also produces a problem of continuous large noise, and also causes a waste of power resources. To solve this problem, it is necessary to automatically adjust the speed of the AC fan according to the temperature of the device. When the temperature is detected to be low, the fan will run at a low speed. When a high temperature is detected, the fan will run at full speed, which increases the life of the fan and reduces the noise. , saving power. [0003] In the prior art, a part of the temperature detection module is used to measure the temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00H02M5/458H02M1/42G05D23/27
CPCF04D27/004H02M5/458H02M1/4208G05D23/27F05D2270/303Y02B70/10
Inventor 张鑫成邵攀峰张明村
Owner EAST GRP CO LTD
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