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Governor for AC blower fan

A technology of fan speed regulation and governor, which is applied in the direction of machines/engines, instruments, mechanical equipment, etc., and can solve the problems of inability to regulate speed

Active Publication Date: 2009-04-29
朱鸽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also those that use closed-loop temperature control. Generally, ordinary temperature control switches are used. The fan can only be turned on or off according to the temperature, and the speed cannot be adjusted.

Method used

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  • Governor for AC blower fan

Examples

Experimental program
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Effect test

Embodiment Construction

[0010] like figure 1 AC fan 8 speed controllers shown, including

[0011] The single-chip microcomputer 1 is preset with the working mode and temperature setting value of the AC fan speed controller;

[0012] Temperature sensor 4 is used to detect the current temperature of the controlled environment, and sends the detected temperature signal to the single-chip microcomputer 1. The current temperature of the controlled environment here refers to the current temperature inside the cabinet such as electric power and communication equipment. It refers to the current temperature in the room where the central air conditioner is installed, etc.;

[0013] The output module 7, the output module 7 includes the thyristor 71 that changes the voltage applied to the AC fan 8 according to the instruction of the single-chip microcomputer 1, and is used to detect the zero-crossing point of the alternating current loaded to the thyristor 71 and input the detection value into the single-chip m...

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Abstract

Disclosed is an AC fan speed regulator, which comprises a single chip microcomputer which is inside preset with the work mode and the temperature set value of the AC fan speed regulator; a temperature sensor which is used for detecting the current temperature of the controlled environment and sending the result into the single chip microcomputer; an output module which comprises a controllable silicon for changing the voltage of the AC fan according to the instruction of the single chip microcomputer and a zero-crossing detecting circuit of a zero-crossing input single chip microcomputer for detecting the alternating current loaded to the controllable silicon; and a power module. The single chip microcomputer compares and calculates the current temperature of the controlled environment detected by the temperature sensor with the inside preset temperature, and controls the conduction angle of the controllable silicon according to the difference of the current temperature of the controlled environment and the temperate set value. The regulator adopts single chip microcomputer technology, upgrades the function the of the conventional AC fan speed regulator, can perform closed loop control based on the detected temperature, preset work mode, and the temperature set value, and also can perform stepless speed control for the AC fan, and control the turn-on or turn-off of the AC fan.

Description

technical field [0001] The invention relates to an AC fan speed controller, in particular to an AC fan speed controller used for temperature control. Background technique [0002] Most of the AC fan speed control systems are related to temperature control, such as cabinet cooling fans for electric power and communication equipment, central air-conditioning fan coil control, etc. This type of application is generally open-loop control, and the speed is adjusted manually by switching the series inductor with a switch or switching different taps of the tapped fan. Some also use closed-loop temperature control. Generally, ordinary temperature control switches are used. The fan can only be turned on or off according to the temperature, and the speed cannot be adjusted. Contents of the invention [0003] The object of the present invention is to provide an AC fan speed controller which can steplessly adjust the speed of the AC fan according to the detected current temperature o...

Claims

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Application Information

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IPC IPC(8): F04D27/00G05D23/20G05D23/185
Inventor 朱鸽金慧峰
Owner 朱鸽
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