Noise reduction structure for wall-mounted fresh air ventilator

Abstract

The invention discloses a noise reduction structure for a wall-mounted fresh air ventilator. The noise reduction structure comprises a structure main body. The structure main body comprises the fresh air ventilator and a noise reduction box arranged at an air outlet of the fresh air ventilator. The noise reduction box comprises a plurality of sets of noise reduction assemblies and airflow channels, wherein the noise reduction assemblies and the airflow channels are distributed in a staggered manner. Each noise reduction assembly is composed of noise reduction cotton and a punched steel plate arranged outside the noise reduction cotton in a wrapping manner. A filter used for flow equalization is arranged on the top of the noise reduction box. The noise reduction box is arranged at the air outlet of the fresh air ventilator, the noise reduction box is composed of the noise reduction assemblies composed of the airflow channels, the polyurethane noise reduction cotton and the punched steel plates, and the noise reduction effect is achieved; and the nylon net filter used for flow equalization is arranged on the top of the noise reduction box, the circumstance that the local air speed is too high is avoided, and the purpose of noise reduction is achieved.

Description

technical field [0001] The invention relates to the technical field of fresh air fans, in particular to a sound-absorbing and noise-reducing structure for wall-mounted fresh air fans. Background technique [0002] The fresh air fan is an effective air purification equipment that can circulate the indoor air. On the one hand, the indoor dirty air is discharged outside, and on the other hand, the fresh outdoor air is sterilized, disinfected, filtered and other measures, and then input into the room. , so that the room is filled with fresh and clean air all the time, and the fresh air fan produces noise during work, which affects the living and working environment. [0003] However, most of the existing fresh air fans do not have noise reduction and noise reduction devices, resulting in the inability to realize the noise reduction and noise reduction function. Noise will be generated during use, which affects the sense of use and cannot better meet the needs of use. Contents ...

AI Technical Summary

Problems solved by technology

[0002] The fresh air fan is an effective air purification equipment that can circulate the indoor air. On the one hand, the indoor dirty air is discharged outside, and on the other hand, the fresh outdoor air is sterilized, disinfected, filtered and other measures, and then input into the room. , so that the room is filled with fresh and clean air all the time, the fresh air fan produces noise during work, affecting the living and working environment

[0003] However, most of the existing fresh air fans do not have noise reduction and noise reduction devices, resulting in the inability to realize the noise reduction and noise reduction function. Noise will be generated during use, which affects the sense of use and cannot better meet the needs of use.

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