Salt damage-proof filter screen

Abstract

The invention discloses a salt damage-proof filter screen comprising a filter screen layer and water-absorbing material layers. The filter screen layer is provided with a first filter screen layer, asecond filter screen layer and a third filter screen layer arranged sequentially from outside to inside. The first filter screen layer, the second filter screen layer and the third filter screen layerare each provided with filter holes. The salt damage-proof filter is characterized in that the aperture of the filter holes of the third filter screen layer is smaller than that of the filter holes of the second filter screen layer, the aperture of the filter holes of the second filter screen layer is smaller than that of the filter holes of the first filter screen layer, and two sides of the second filter screen layer are each provided with the water absorbent material layer. According to the salt damage-proof filter screen and according to the size of sea salt particles, filter screens withdifferent sizes and densities are selected, the blockage of fine filter screens by large-particle sea salt is effectively prevented, and the sea salt particles are prevented from being flown apart again after deliquescence.

Description

technical field [0001] The invention relates to an air filter device, in particular to a filter screen for preventing salt damage. Background technique [0002] At present, the diameter of sea salt particles in coastal areas is distributed between 0.3-20um, and the particles with diameters between 1-5um account for about 80%. The existing air-conditioning filter meshes are all of a single size. It cannot prevent fine sea salt particles from entering. If the pore size is too small, the sea salt particles will deliquesce in a high-humidity environment after being captured, and then precipitate to form a film, causing a sharp increase in resistance and forming a ventilation barrier. At this time, the filter can only be replaced and cleaned , and the finer the filter, the higher its cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a filter screen for preventing salt damage, which can filter the sea salt particl...

AI Technical Summary

Problems solved by technology

[0002] At present, the diameter of sea salt particles in coastal areas is distributed between 0.3 and 20um, and the particles with diameters between 1 and 5um account for about 80%. The existing air conditioning filter meshes are all of a single size. It cannot prevent fine sea salt particles from entering. If the pore size is too small, the sea salt particles will deliquesce in a high-humidity environment after being captured, and then precipitate to form a film, causing a sharp increase in resistance and forming a ventilation barrier. At this time, the filter can only be replaced and cleaned , and the finer the filter, the higher the cost

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