Ventilation and purification device

Abstract

The invention provides a ventilation and purification device, and belongs to the technical field of ventilation equipment. The ventilation and purification device comprises a pipeline internally provided with a fan, one end of the pipeline communicates with a filter box through a connector, the other end of the pipeline is provided with a first air opening located outdoors, the filter box is provided with a mounting cavity communicating with the pipeline, and a filter assembly is arranged in the mounting cavity. The filter assembly divides the mounting cavity into a first cavity and a second cavity, the first cavity communicates with the pipeline, a sound absorption layer opposite to the filter assembly is arranged in the second cavity, and a second air opening which communicates with the second cavity and is located indoors is formed in the side wall, corresponding to the position between the sound absorption layer and the filter assembly, of the filter box. The distance between the sound absorbing layer and the filtering assembly is not larger than 50 mm, the connector and the center of the filtering box are eccentrically arranged, and the outer edge of the connector and the second air opening are spaced by a set distance in the direction parallel to the section of the connector. By means of the filtering assembly and the sound absorption layer which are oppositely arranged, air noise is effectively absorbed, and meanwhile it is avoided that a sound absorption structure is very complex in design.

Description

technical field [0001] The invention relates to the technical field of ventilation equipment, in particular to an air exchange and purification device. Background technique [0002] Factories, residences, factory buildings, offices, bedrooms, etc. are generally relatively closed spaces with poor air circulation. After a long period of no ventilation, the indoor air quality will deteriorate and affect human health. Therefore, how to improve the air quality in closed rooms is currently the One of the hotspots of research. [0003] In the related art, an installation groove is often set up on the wall separating the indoor and outdoor for installing the ventilation equipment. ventilation duct. The fan can realize forward and reverse rotation. When the fan rotates forward, the air can flow from the outdoor to the indoor through the ventilation duct, or when the fan is reversed, the air can flow from the indoor to the outdoor through the ventilation duct, thus completing the ai...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an air exchange and purification device, which is used to solve the problem that the ventilation ducts made of sound-absorbing cotton in the air exchange devices in the related art usually have a relatively complicated structure, so as to extend the distance of air flowing in it to effectively absorb noise. Alleviate the problem of exhaust ventilation efficiency

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