Three-dimensional air supply wind wheel, wind wheel type DC fan and three-dimensional air supply mask

Abstract

The invention provides a three-dimensional air supply wind wheel which comprises a wind wheel body. The middle of the front side face and the middle of the rear side face of the wind wheel body are in an umbrella shape which protrudes forwards in the axial direction as a whole. A boss is formed on the front side face, and concave cavities for accommodation are formed on the rear side face. The three-dimensional air supply wind wheel sucks air in a turbine mode and supplies air in a centrifugal mode, and a wind wheel type DC fan comprising the wind wheel has the advantages of being low in noise, low in wind resistance and large in air volume. The invention further provides a three-dimensional air supply mask comprising the wind wheel. The three-dimensional air supply mask has the technical advantages of being light, thin, low in noise, stable in fixation, and convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to a wind wheel, in particular to a three-dimensional air supply wind wheel, a wind wheel type DC fan and a three-dimensional air supply mask using the wind wheel. Background technique [0002] With the development of urban construction, air pollution, wind and sand and haze weather, as well as infectious diseases and fine particulate matter (PM2.5) will cause serious harm to human health. The traditional mask is composed of a whole cover body, the outer surface of the cover body is the filter surface, and a filter material layer is set along the filter surface, and the outside air is sucked through the filter material layer through the nasal breathing force, but the breathing is caused by the resistance of the filter material layer and so on. Not smooth. At the same time, when a certain filtering effect needs to be achieved, the resistance of the filter material layer also increases proportionally, causing external air to enter ...

AI Technical Summary

Problems solved by technology

The two side plates are symmetrically provided with through holes for fixing the two ends of the air leaf. After the two ends of the air leaf are inserted through the through holes, the outer end is set. Closely fixed, because the axial eccentric force will be generated in the process of turning the outer end of the air leaf at 90 degrees, the deformation and eccentricity of the air leaf itself, the two side plates, and the connection between the air leaf and the two side plates, At the same time, the overall wind wheel will be twisted, so that its concentricity and flat quality requirements cannot be guaranteed.

[0005] The traditional active air supply mask has a slightly thick structure and is inconvenient to wear

At the same time, it has the disadvantages of complex structure and difficult maintenance and disassembly

On this basis, the applicant successively proposed the active air supply mask with the application number 2014101690485, the DC motor wind wheel with the application number 201410169049X and the processing method of the DC motor and the wind wheel, and the active air supply protective mask with the application number 201410614725X, etc., which were solved successively. The technical problems of the above-mentioned traditional technology have been solved, but due to the use of the centralized air inlet structure, the filter box filter structure and the combined wind wheel structure, the structure also has technical problems such as a slightly thick overall structure, complicated processing and assembly, etc.

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