Cold catalyst filter screen

Abstract

The invention discloses a cold catalyst filter screen. The cold catalyst filter screen includes an air inlet surface, an air outlet surface and a plurality of filter channels; the air inlet surface isprovided with a first air inlet hole, the periphery of the first air inlet hole is provided with a plurality of air inlet circles, and each layer of the air inlet circles is composed of a plurality of second air inlet holes; a first air outlet hole is formed in the center of the air outlet surface, a plurality of air outlet circles are sequentially arranged at the periphery of the first air outlet hole, and each layer of the air outlet circles is composed of a plurality of second air outlet holes; a filter channel connected to the first air inlet hole and the first air outlet hole is a firstfilter channel; a filter channel connected to the second air inlet holes and the second air outlet holes is a second filter channel; and the first filter channel and the second filter channel separately include a first air inlet section and a second air inlet section, a first filter section and a second filter section, and a first air outlet section and a second air outlet section. According to the cold catalyst filter screen, the structural design is reasonable, and the filter channels of the filter screen is extended to increase the contact time between gas and the filter screen, so that thepurification efficiency of the filter screen is high.

Description

technical field [0001] The invention belongs to the field of gas purification and ventilation equipment accessories, in particular to a cold catalyst filter net. Background technique [0002] The cold catalyst can catalyze harmful gases such as formaldehyde, ammonia, benzene, TVOC, hydrogen sulfide, etc. under normal living environment without ultraviolet rays, high temperature, and high pressure. Most of the manufacturers on the market use photocatalysts. Photocatalysts can only work when the light source medium reaches 380nm. The general publicity that ultraviolet radiation can play a catalytic role is a way to mislead consumers. Ultraviolet light is currently used the most. It is 254nm or 365nm, even the maximum value cannot meet the catalytic effect of photocatalyst. For the application of the cold catalyst filter, the effective contact time must be ensured to catalyze various harmful gases. Therefore, how to increase the contact time between the gas and the cold cataly...

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Problems solved by technology

[0003] The patent application number is 201510555291.5 Chinese patent: a cold catalyst filter for air purifiers, which discloses a frame and a filter main body, a connecting belt is provided on the upper part of the inner edge of the frame, and the filter main body is composed of several triangular filter holes. A number of stagnation plates are uniformly arranged horizontally in the filter hole. The two sides of the stagnation plate are fixedly connected with the inner wall of the filter hole, and the other side is separated from the inner wall of the filter hole to form a gas channel. There is a sealing strip between the main body of the filter screen and the frame; the stagnation plate set in the above invention will make the filter path too tortuous, affect the filtering wind speed, and even blockage will occur. The structural design is unreasonable and cannot meet the requirements of the application. Beneficial effects mentioned in the document, poorly filtered

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