A new micro-perforated plate muffler with barbed triangular micro-perforations

Abstract

The invention relates to the technical field of airflow noise reduction, and discloses a new type of micro-perforated plate muffler with barbed triangular micro-perforations, including a housing. The inside of the housing is sealed with a micro-perforated plate through a sealing tape. The number of micro-perforated plates is Two, two micro-perforated plates are symmetrical to each other with the vertical center line of the shell as the symmetrical axis. The left and right sides of the inner wall of the shell are respectively movably socketed with an air outlet pipe and an air intake pipe. The right end of the air intake pipe runs through the shell. body and extends to the right side of the housing. The new type of micro-perforated plate muffler with thorny triangular micro-perforation, through the distance adjustment device, there are clockwise and counterclockwise threads with opposite patterns, which is convenient for the user to simultaneously adjust the two micro-perforated plates according to the volume of the noise source and the audio frequency. The distance from the adjacent side of the shell is convenient for silencing noises and audios of different sizes by adjusting the depth of the inner cavity, which improves the applicability of the new micro-perforated plate muffler for silencing different volumes and audios.

Description

technical field [0001] The invention relates to the technical field of airflow noise reduction, in particular to a novel micro-perforated plate muffler with barbed triangular micro-perforations. Background technique [0002] The micro-perforated plate muffler is a new type of muffler made of the sound-absorbing structure of the micro-perforated plate, without any porous sound-absorbing material. The micro-perforated plate muffler generally blocks the sound transmitted from the noise source through the micro-holes of the micro-perforated plate. At the same time, through the depth of the internal cavity, the incoming sound is resonantly silenced, so as to achieve the effect of absorbing sound energy. [0003] The existing micro-perforated plate muffler is mainly composed of a micro-perforated plate and a cavity pipe, and the micro-perforated plate and the cavity pipe are generally fixedly connected. However, the distance between the inner wall of the cavity pipe and the microh...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a novel micro-perforated plate muffler with barbed triangular micro-perforations, which improves the applicability of the new micro-perforated plate muffler for different volumes and audio levels and improves the low ductility of the micro-perforated plate for users to adjust. The advantage of solving the problems mentioned in the background technology

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