Air-purifying ventilation fan control system with constant-current voltage stabilizing and wave filtering functions

Abstract

The invention discloses an air-purifying ventilation fan control system with the constant-current voltage stabilizing and wave filtering functions. The air-purifying ventilation fan control system mainly comprises a transformer T, a diode rectifier U1, a triode constant-current circuit voltage stabilizing chip U2, s smoke sensor YW, a triode VT1, a triode VT2, a triode VT3, a triode VT4, a triodeVT5, a relay K, a polar capacitor C10, a polar capacitor C12, a resistor R7, a resistor R8, an adjustable resistor R9, a resistor R10, a resistor R11, a resistor R12 and the like, wherein the relay Kis connected in series between the P pole and the N pole of a diode D3. The air-purifying ventilation fan control system disclosed by the invention has the advantages that through the smoke sensor YW,the air pollution condition within the use scope of an air-purifying ventilation fan can be detected, and the detected information can be processed; the control voltage can be adjusted; and furthermore, the air pollution condition can be controlled through the information detected by the smoke sensor YW, and then the air-purifying ventilation fan can be controlled to automatically open and close.

Description

technical field [0001] The invention relates to a control circuit, in particular to a control system for a purifying air ventilation fan with a constant current type voltage stabilizing filter. Background technique [0002] With the continuous progress of industrial automation and the continuous improvement of people's quality of life, people's requirements for their living environment are also constantly improving, and air quality is an important symbol of the quality of the environment, which directly affects people's healthy life. Air purifiers are used in home, medical, and industrial fields. In the home field, stand-alone household air purifiers are the mainstream products in the market. Air purifiers can remove particulate matter in the air, including allergens, indoor PM2.5, etc., and can also solve the problem of volatile organic compounds in indoors, underground spaces, and cars caused by decoration or other reasons. Therefore people often use air purifier to purif...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of complex structure, high cost, unsatisfactory control effect and poor output voltage stability of the existing control circuit of the purification air ventilation fan, and provide a control circuit for the purification air ventilation fan with constant current type voltage stabilization filter. system

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