CN212901964U

CN212901964U - Resonance expanding silencer

Info

Publication number: CN212901964U
Application number: CN202021404925.XU
Authority: CN
Inventors: 廖腾峰; 董仕任; 雷行周; 汤秉铿; 韦振念; 朱少英; 覃冠杰; 韦举昌; 杨盛; 陆伟杰; 吴张莠; 张家能
Original assignee: Guangxi Industrial Vocational And Technical College
Current assignee: Guangxi Industrial Vocational And Technical College
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-04-06
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a resonance expanding silencer, which comprises an outer pipe body, an interference pipe and a clapboard; the outer pipe body is arranged into a cavity with the periphery closed, a plurality of through holes are formed in the pipe wall of the interference pipe, and the interference pipe extends into the cavity from two ends of the outer pipe body respectively; the baffle is arranged in the cavity to separate the cavity; the interference tube passes through the partition plate. Through this design, effectively carry out the amortization to low, the intermediate frequency noise in places such as house, villa, office, hotel, hospital, school, reach the effect of ventilation, noise reduction simultaneously.

Description

Resonance expanding silencer

Technical Field

The utility model belongs to the technical field of the amortization technique and specifically relates to a resonance expanding muffler is related to.

Background

The environmental noise refers to the sound generated in industrial production, building construction, transportation and social life and interfering the surrounding living environment. In the existing composite silencing equipment, an impedance combination mode is mostly adopted, noise of low, medium and high frequency bands is eliminated, low and medium frequency noise is the most common in most living environments, and especially in residences, villas, offices, hotels, hospitals, schools and public places, ventilation needs to be met, fresh air is continuously provided for rooms, and the influence of noise on living environments needs to be met. The existing low and medium frequency noise silencers mostly reduce noise of diesel engines, compressors and other thermodynamic equipment, so that the low and medium frequency silencers for houses, villas, offices, hotels, hospitals, schools and other places need to be designed, and not only can the ventilation effect be achieved, but also the noise can be reduced.

The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

The utility model provides a resonance expanding muffler to above-mentioned technical problem to carry out the amortization to low, the intermediate frequency noise in places such as house, villa, office, hotel, hospital, school, reach the effect of ventilation, noise reduction simultaneously.

In order to realize the purpose, the utility model adopts the following technical scheme:

a resonance expansion type silencer comprises an outer pipe body, an interference pipe and a clapboard; the outer pipe body is arranged into a cavity with the periphery closed, a plurality of through holes are formed in the pipe wall of the interference pipe, and the interference pipe extends into the cavity from two ends of the outer pipe body respectively; the baffle is arranged in the cavity to separate the cavity; the interference tube passes through the partition plate.

Furthermore, two ends of the outer tube body respectively extend into the two interference tubes, and the interference tubes at the two ends are staggered with each other.

Further, both ends of the interference tube are open.

Furthermore, two clapboards are arranged in the cavity, and the cavity of the outer tube body is divided into a left part, a middle part and a right part by the clapboards.

Furthermore, the left part in the cavity is an expansion chamber a, the middle part is a resonant cavity, and the right part is an expansion chamber b.

Furthermore, the pipe walls of the interference pipes in the expansion chamber a and the expansion chamber b are arranged in a closed mode.

The utility model has the advantages of compared with the prior art:

(1) the utility model relates to a resonance expanding silencer, which comprises an outer pipe body, an interference pipe and a clapboard; the air flow passes through the interference tube, and the outer tube body and the interference tube form a large resonant cavity for silencing low and medium frequency noises; under the action of the partition plate, the resonant cavity is divided into an expansion chamber a, the middle part is the resonant cavity, and the right part is an expansion chamber b, so that the low and medium frequency noises in different frequency bands are further effectively silenced, and the silencing performance is improved. The interference tube spans the three chambers, different noise reduction modes are formed in the three chambers, and noise reduction of different frequency bands is met.

(2) The interference tubes are inserted into the cavity body from two ends of the outer tube body in a staggered mode to form mutual interference noise reduction.

(3) The pipe walls of the interference pipes in the expansion chamber a and the expansion chamber b are arranged in a closed manner, and through holes are not formed in the surfaces of the pipe walls, so that the expansion and noise reduction effects of the expansion chamber a and the expansion chamber b are mainly utilized.

(4) The function of the partition is to support the interference tube and the separation chamber.

Drawings

FIG. 1 is a front cross-sectional view of the resonant expanding muffler of the present invention;

FIG. 2 is a left side view of the resonant extension muffler of the present invention;

fig. 3 is an isometric view of the resonant extension muffler of the present invention.

Reference numerals: 1. an outer tubular body; 2. an interference tube; 3. an expansion chamber a; 4. a resonant cavity; 5. an expansion chamber b; 6. a separator.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment. It should be understood that the directions "up", "down", "left" and "right" in the following embodiments of the present invention are all based on the position of the corresponding drawing. These directional terms are used for convenience of description only and do not represent limitations on the particular embodiments of the present invention. Unless otherwise specified, like reference numerals in the reference numerals refer to like structures.

Referring to fig. 1-3, the utility model relates to a resonance expanding silencer, which comprises an outer pipe body 1, an interference pipe 2 and a clapboard 6; the outer pipe body 1 is arranged into a cavity with the periphery closed, a plurality of through holes are formed in the pipe wall of the interference pipe 2, and the interference pipe 2 extends into the cavity from two ends of the outer pipe body 1 respectively; the outer tube body 1 and the interference tube 2 form a large resonant cavity for silencing low and medium frequency noises; the partition plate 6 is arranged in the cavity to partition the cavity; two clapboards 6 are arranged in the cavity, the clapboards 6 divide the cavity of the outer tube body 1 into a left part, a middle part and a right part, namely, referring to fig. 1, the left part in the cavity is an expansion chamber a3, the middle part is a resonant cavity 4, and the right part is an expansion chamber b5, so that the silencing performance is further improved for effectively silencing low and medium frequency noise of different frequency bands. The interference tube 2 spans the three chambers, different noise reduction modes are formed in the three chambers, and noise reduction of different frequency bands is met.

As a further optimization of the technical scheme, two ends of the outer tube body 1 respectively extend into the two interference tubes 2, the interference tubes 2 at the two ends are staggered with each other, and the two ends of the interference tubes 2 are opened to form mutual interference noise reduction; the interference tube 2 passes through the partition plate 6; the interference tube 2 in the expansion chamber a3 and the expansion chamber b5 is arranged in a closed manner, namely, no through hole is arranged on the tube wall of the section, and the expansion chamber a3 and the expansion chamber b5 are used for forming expansion type sound attenuation.

The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention.

Claims

1. A resonant expansion muffler characterized by: comprises an outer tube body, an interference tube and a clapboard; the outer pipe body is arranged into a cavity with the periphery closed, a plurality of through holes are formed in the pipe wall of the interference pipe, and the interference pipe extends into the cavity from two ends of the outer pipe body respectively; the baffle is arranged in the cavity to separate the cavity; the interference tube passes through the partition plate.

2. A resonant expansion silencer according to claim 1, wherein: two ends of the outer tube body respectively extend into the two interference tubes, and the interference tubes at the two ends are staggered with each other.

3. A resonant expansion silencer according to claim 2, wherein: the two ends of the interference tube are open.

4. A resonant expansion silencer according to claim 1, wherein: two clapboards are arranged in the cavity, and the clapboards divide the cavity of the outer tube body into a left part, a middle part and a right part.

5. A resonant expansion silencer according to claim 4, wherein: the left part in the cavity is an expansion chamber a, the middle part is a resonant cavity, and the right part is an expansion chamber b.

6. A resonant expansion silencer according to claim 5, wherein: and the pipe walls of the interference pipes in the expansion chamber a and the expansion chamber b are arranged in a closed manner.