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Speed regulating device of air exchange fan

A ventilation fan, AC technology, applied in pump control, non-variable-capacity pumps, machines/engines, etc., can solve the problems of motor overheating, waste of power, burnout, etc., and achieve the effect of eliminating power waste and simple circuit

Inactive Publication Date: 2012-12-19
刘德军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The characteristic of various ventilating fans on the market is that the speed of the ventilating fan has only one speed, and the operating speed of the ventilating fan cannot be adjusted during use.
When the room or confined space needs to be ventilated for a long time, the ventilation fan can only be operated at full speed for a long time, which not only wastes electricity, but also easily causes the motor of the ventilation fan to overheat and burn out due to the long working time

Method used

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  • Speed regulating device of air exchange fan

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Embodiment Construction

[0012] According to attached figure 1 The present invention can be realized by implementing the circuit working principle diagram and description of the accompanying drawings of the ventilating fan speed regulating device and the technical requirements of the components described below.

[0013] Selection of components and their technical parameters

[0014] SCR is a bidirectional thyristor, and the selected model is 3CTSI or DB3;

[0015] KS is a bidirectional trigger diode, the selected model is 2CTS or BCR3AM;

[0016] The resistor is RTX-1 type metal film resistor with a power of 1W, and the resistance value of the matching resistor R1 is 8.2~12KΩ; the resistance value of the linear potentiometer RP is 27KΩ;

[0017] Capacitor C1 is made of polyester capacitor with a capacity of 0.1μF, and the withstand voltage of capacitor C1 is required to be ≥200V;

[0018] The power of the ventilation fan motor is 30-50W.

[0019] Main Points of Circuit Making and Circuit Debugging...

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Abstract

The invention discloses a speed regulating device of an air exchange fan. The speed regulating device of the air exchange fan comprises a 220V alternating current power supply, a resistor-capacitor phase-shifting circuit, a bidirectional triode thyristor control circuit and the air exchange fan. Various air exchange fans on the market work at only one rotating speed and cannot be regulated in rotating speed when in use. The speed regulating device of the air exchange fan, provided by the invention, can be used for regulating the rotating speed of the air exchange fan as required. When rapid air exchange in a room is needed, the air exchange fan can work at a full speed; when long-term air exchange in the room is needed, the air exchange fan can run at a low speed; and thus, not only can unnecessary power waste be effectively avoided, but also the air exchange fan can be effectively protected from being burned out due to overhigh temperature after long-term operation. The speed regulating device of the air exchange fan, provided by the invention, is simple in circuit and completely adopts common elements so as to be suitable for mass development and applied to industrial mass development of novel air exchange fans with speed regulating functions.

Description

technical field [0001] The invention belongs to the application field of electronic control technology, and relates to a ventilation fan speed regulating device. Background technique [0002] The characteristic of various ventilating fans on the market is that the rotating speed of the ventilating fan has only one speed, and the operating speed of the ventilating fan cannot be adjusted during use. When a room or a closed space needs to be ventilated for a long time, the ventilating fan can only be operated at full speed for a long time, which not only wastes electricity, but also easily causes the motor of the ventilating fan to overheat and burn out due to the long working time. [0003] The ventilating fan speed regulating device of the present invention can adjust the operating speed of the ventilating fan as required. When the room needs to be ventilated quickly, the ventilating fan can be operated at full speed; when the room needs to be ventilated for a long time, the...

Claims

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Application Information

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IPC IPC(8): F04D27/00
Inventor 刘德军黄勇
Owner 刘德军
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