Filtering device, air purifying device and control method

Abstract

The invention provides a filtering device, an air purification device and a control method, the filtering device comprises a shell and a filter screen assembly, an air duct is formed in the shell, and the filter screen assembly is rotatably arranged on the periphery of the shell in a surrounding mode and comprises a filter screen frame and a filter screen; the filter screen frame surrounds two ends of the air duct; at least two filtering positions and at least one non-filtering position are formed on the filter screen frame and can be controlled to rotate; the filter screen frame is controlled to rotate, so that air flowing through the air duct is filtered once when one non-filtering position is positioned at one end of the air duct and one filtering position is positioned at the other end of the air duct; the filter screen frame is controlled to rotate, so that air flowing through the air duct is filtered twice when the two filtering positions are located at the two ends of the air duct respectively; the filtering device is applied to the air purifying device; the filter grade is determined according to the air pollution condition, the filter screen assembly is controlled to rotate, the corresponding filter area rotates to the air inlet and the air outlet, the filter effect is improved, and the replacement frequency of the filter screen is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a filter device, an air purification device and a control method. Background technique [0002] With the improvement of living standards, people put forward higher requirements for indoor air quality and health and comfort. Existing technologies mainly use filter screens to filter particulate matter in the air. The number of meshes and the number of layers of the filter screens are fixed, so that the filtering range is narrow and the filtering accuracy is low, and the filtering accuracy cannot be adjusted in real time according to changes in the indoor air quality; in addition, the filtering The mesh is easy to be blocked after being used for a period of time. If it is not replaced in time, the filtering effect will be deteriorated and the ventilation volume will be reduced, which will affect the filtering effect of the filter. Contents of the invention [0003] In vi...

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Problems solved by technology

[0003] In view of this, the present invention provides a filter device, an air purification device and a control method to solve the problems in the prior art such as narrow filter range, low filter precision and cannot be adjusted, poor purification effect, etc.

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