LED photocatalytic air purification filter screen made from yttrium oxysulfide

Abstract

The invention relates to an LED photocatalytic air purification filter screen made from yttrium oxysulfide. The Led photocatalytic air purification filter screen comprises an LED lamp strip, a middle filter screen A, an electrical control plate, a pressure sensor, a rear filter screen B, a power supply and a power switch. The LED lamp strip is connected to the electrical control plate, and the electrical control plate is connected with the pressure sensor. When an air conditioner is started, a wind sensor sends a sensing signal to the electrical control plate, and white light emitted by the LED lamp strip is irradiated to the middle filter screen A. The middle filter screen A is a photocatalytic filter screen containing the yttrium oxysulfide, and the rear filter screen B contains adsorption filter materials such as activated carbon and HEPA. The LED photocatalytic air purification filter screen has the advantages that visible LED light is utilized to catalyze the yttrium oxysulfide filter screen, and the filter screen combines with adsorption technologies such as activated carbon and HEPA, has the multiple functions of efficiently filtering out PM2.5 particles, eliminating peculiar smell, killing bacteria, degrading VOCS and the like, especially replaces an air conditioner purification filter screen and has high application value.

Description

technical field [0001] The invention relates to an air purification filter screen, in particular to an Led photocatalytic air purification filter screen made of yttrium oxide sulfur. Background technique [0002] Today, the problem of environmental pollution has increasingly become the focus of attention of the whole society. Volatile organic compounds (Volatile organic compounds, VOC for short) S ), is one of the main pollutants in the atmosphere, formaldehyde, toluene, etc. volatilized from outdoor industrial waste gas, automobile exhaust, and interior decoration materials; various VOCs S The mixed existence of air pollution and the chemical interaction between them will further increase the intensity of harm; therefore, it is of great significance to people's health to improve the quality of indoor air and maintain a comfortable humidity for the human body through purification technology. [0003] At present, the photocatalytic air purifiers that have matured in the mark...

AI Technical Summary

Problems solved by technology

[0003] At present, the photocatalytic air purifiers that have matured in the market can not only filter out particulate matter such as PM2.5, but also degrade VOC S , showing good application prospects; but the photocatalytic materials used in this type of purifier are basically TiO 2 ; due to TiO 2 The shortcomings of narrow spectral response range, low photocatalytic efficiency, low degradation efficiency, and easy deactivation of photocatalysts greatly limit the effect of photocatalytic air purification; at the same time, the high-pressure ultraviolet mercury lamps used have potential safety hazards , such as ozone, etc.

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