A new fan and method for reducing filter resistance

Abstract

The invention relates to a fresh fan, which includes a casing, a filter assembly and a fan. The casing has an air inlet on the lower part and an air outlet on the upper part. The filter assembly blocks the air inlet and the air outlet in the upper chamber and the lower chamber respectively. , the lower chamber is also provided with an agglomeration structure, an ionization structure and a differentiation structure arranged in sequence along the gas flow direction. The negatively charged agglomerated particles are differentiated into at least two regions with gradually varying particle sizes, and the filter pore size of the filter assembly varies with the regions. The invention agglomerates the particles in the air so that the agglomerated particles carry negative charges, and utilizes the magnetic force to divide the negatively charged agglomerated particles into different particle size regions according to the size of the particles, and correspondingly changes the filter aperture of the filter assembly. On the basis of maintaining the effective filtering effect, improve the filtering efficiency, and then improve the air purification effect.

Description

technical field [0001] The invention relates to a fresh fan and a method for reducing the resistance of a filter screen. Background technique [0002] At present, the problem of fresh air filter resistance is generally solved by changing the filter structure to reduce the wind speed and increase the filter aperture, so that when the air passes through the filter, energy loss can be reduced, pressure resistance can be reduced, and the rate of clean air can be increased. . [0003] However, the above processing method has the following problems: [0004] (1) Changing the structure of the filter screen will increase the design cost and manufacturing cost, and the structure different from the conventional filter screen will also lead to later replacement and poor versatility; [0005] (2) Although reducing the wind speed can reduce the resistance, it also reduces the generation of clean air, which is not a cure for the symptoms and does not meet the actual needs of users; [...

AI Technical Summary

Problems solved by technology

[0004] (1) Changing the structure of the filter screen will increase the design cost and manufacturing cost, and the structure different from the conventional filter screen will also lead to later replacement and poor versatility;

[0005] (2) Although reducing the wind speed can reduce the resistance, it also reduces the generation of clean air, which is not a cure for the symptoms and does not meet the actual needs of users;

[0006] (3) Increase the pore size of the filter screen, the filter screen will significantly reduce the purification effect on particles with small particle sizes, and reduce the purification performance of the entire filter screen, which is contrary to the needs of users

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