CN213303632U

CN213303632U - Novel matrix silencer

Info

Publication number: CN213303632U
Application number: CN202021834688.0U
Authority: CN
Inventors: 王欣
Original assignee: Beijing Qingyuan Zhirui Technology Co ltd
Current assignee: Beijing Qingyuan Zhirui Technology Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-05-28
Anticipated expiration: 2030-08-28

Abstract

The invention provides a novel matrix silencer, which uses a silencing matrix formed by the staggered installation of silencing units along the airflow direction, solves the problem of high-frequency failure of the traditional sheet-type resistive silencer, and can obviously improve the low-frequency noise reduction of the silencer because the transmission mode of noise in the silencer is changed from linear transmission to diffraction transmission. The sound absorption material adopts the micropore reducing aluminum plate, and sound absorption cotton and other sound absorption materials which can generate dust and harmful gas are not filled, so that the environmental protection characteristic of the silencer is ensured. The silencer is suitable for various places needing to be provided with silencers.

Description

Novel matrix silencer

Technical Field

The invention relates to a silencer which can solve the problem of high-frequency failure, has high low-frequency silencing quantity and does not produce pollutants such as dust and the like.

Background

The main category of the existing mufflers applied to various noise reduction projects is sheet-type resistive mufflers, and the mufflers usually have the following problems: firstly, the sheet-type resistive muffler is constructed by a perforated metal plate and centrifugal glass wool, the main material for high-frequency noise elimination is the centrifugal glass wool, and a through channel is formed between sheets of the sheet-type resistive muffler, so that high-frequency noise cannot be absorbed by the centrifugal glass wool, and the problem of high-frequency failure is caused; secondly, the sheet-type resistive muffler has poor low-frequency muffling effect generally, and cannot meet the muffling requirement mainly for low-frequency noise; finally, the centrifugal glass wool or other fillers used by the sheet-type resistive muffler are easy to generate dust and various toxic and harmful gases, and harm the health of human bodies.

In conclusion, a silencer which can solve the problem of high-frequency failure, has high low-frequency noise reduction and good environmental protection performance does not exist in China.

Disclosure of Invention

The purpose of the invention is: the silencer can solve the problem of high-frequency failure, has high low-frequency noise reduction, and does not produce dust and toxic and harmful gas.

The technical solution of the invention is as follows:

the internal silencing structure of the matrix type silencer adopts a silencing matrix which is installed by a silencing unit in a staggered mode along the airflow direction. Inside the noise elimination matrix, along the air current direction, the noise elimination unit covers each other for the noise can not be propagated to the external world along the straight line in the silencer. Because the noise is inevitably contacted with the noise elimination unit in the transmission path of the noise in the silencer, the high-frequency noise reduction quantity of the silencer is improved, and the problem of high-frequency failure of the common sheet type resistive silencer is solved.

Because the silencing units cover each other along the airflow direction, the transmission mode of noise in the silencer is changed into diffraction transmission, and sound energy is absorbed by the silencing units during each diffraction transmission. The noise elimination unit is made of the reducing microporous aluminum plate, the low-frequency sound absorption performance of the structure is good, and the noise is repeatedly reflected inside the silencer, so that the low-frequency sound absorption performance of the matrix type silencer is greatly improved compared with that of the traditional sheet type resistive silencer.

The silencing unit of the matrix type silencer is made of a microporous reducing aluminum plate, the structure does not contain fillers such as glass wool and the like, does not generate dust and toxic and harmful gases, and is environment-friendly and healthy.

Compared with the prior art, the invention has the following advantages:

(1) the silencing matrix which is installed along the direction of the air flow in a staggered mode is used, and the problem of high-frequency failure of the existing silencer is solved.

(2) Because the low-frequency noise is reflected for multiple times in the silencing matrix, and the silencing unit has good low-frequency sound absorption performance, the low-frequency silencing quantity of the silencer is improved.

(3) Because the internal sound absorption material is made of metal material, no dust and various toxic and harmful gases are generated.

Drawings

FIG. 1 is a muffler unit

FIG. 2 is an external view of a matrix muffler

FIG. 3 is a schematic view of a matrix muffler structure

FIG. 4 is a schematic diagram of a three-dimensional structure of a matrix muffler

FIG. 5 is a comparison graph of noise elimination curves of the matrix type muffler and the sheet type resistive muffler

The specific reference numbers in the figures are as follows:

1. 1mm thick micropore reducing aluminum plate

2. Noise elimination matrix 3 and noise eliminator shell

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In one embodiment, referring to fig. 1, the sound attenuation unit is made of a 1mm thick microporous reducing aluminum plate, and the shape of the sound attenuation unit is a hexagonal cylinder.

In one embodiment, referring to fig. 2, 3 and 4, the silencing matrix is composed of silencing units which are installed along the airflow direction in a staggered mode. The noise cannot be transmitted along a straight line in the noise elimination matrix, the noise elimination units are mutually covered, the transmission mode of the noise in the silencer is changed into diffraction transmission, and the noise can be absorbed by the noise elimination units during each diffraction transmission.

Claims

1. A novel matrix silencer which is characterized in that: the method comprises the following steps:

a silencing matrix consisting of silencing units, a silencer shell,

the silencing unit takes a micropore reducing aluminum plate as a sound absorption material,

the noise elimination matrix is composed of noise elimination units installed along the airflow direction in a staggered mode.