CN210738658U

CN210738658U - Double-cavity silencer

Info

Publication number: CN210738658U
Application number: CN201921375705.6U
Authority: CN
Inventors: 周元忠; 王儒; 宋荣峰
Original assignee: Jiangsu Zhongxin Vehicle Co ltd
Current assignee: Jiangsu Zhongxin Vehicle Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-06-12
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a two-chamber muffler, including the muffler casing, what muffler casing both sides correspond is provided with air inlet and gas outlet, be provided with the muffler inner chamber in the muffler casing, the muffler inner chamber includes front end muffler and rear end muffler, connect through the conveying passageway between front end muffler and the rear end muffler, conveying passageway both sides are provided with the cotton chamber of amortization, connect the amortization baffle through the vibrating shaft in the front end muffler, be provided with the amortization guide plate to the slope of gas outlet in the rear end muffler. In the above technical scheme, compared with the prior art, the beneficial effect that reaches is: the air flow passes through the front end silencer and the rear end silencer, and the vibration of the vibration shaft and the vibration outer shaft is utilized to counteract the howling of the air flow, so that the aim of silencing is fulfilled; the design of the conveying passageway and the silencing cotton cavity further achieves the purpose of silencing.

Description

Double-cavity silencer

Technical Field

The utility model relates to an engine exhaust system technical field especially relates to a two-chamber muffler.

Background

In an exhaust system, in order to solve the problem of low-frequency noise within a certain volume range, the traditional bypass HT tuning cavity structure is often adopted in a silencer. When the noise frequency to be solved is very low (such as lower than 50Hz), under the condition of a certain volume, a thinner and longer tuning tube is needed. However, the following problems may exist in solving such a pitch cavity with ultra-low frequency: (1) the tuning tube is too thin, and the production cost is high; (2) the tuning tube is too long, and the durability is easy to cause problems; (3) is limited by the structural limitation of the silencer, the long tuning pipe often needs to be bent to meet the length requirement, and the process and the production cost are higher. Therefore, there is a need to provide a new solution to solve the above technical problem.

Disclosure of Invention

The utility model aims at: a dual chamber muffler is provided.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a two-chamber muffler, includes the muffler casing, what muffler casing both sides correspond is provided with air inlet and gas outlet, be provided with the muffler inner chamber in the muffler casing, the muffler inner chamber includes front end muffler and rear end muffler, connect through the conveying passageway between front end muffler and the rear end muffler, conveying passageway both sides are provided with the cotton chamber of amortization.

And the front end silencer is internally connected with a silencing partition plate through a vibrating shaft.

And a silencing guide plate inclined towards the air outlet is arranged in the rear-end silencer.

A vibration outer shaft is arranged in the shell of the silencer and connected with a front end silencer and a rear end silencer.

In the above technical scheme, compared with the prior art, the beneficial effect that reaches is: the air flow passes through the front end silencer and the rear end silencer, and the vibration of the vibration shaft and the vibration outer shaft is utilized to counteract the howling of the air flow, so that the aim of silencing is fulfilled; the design of the conveying passage and the silencing cotton cavity further achieves the purpose of silencing; the effect of amortization guide plate has both guided the direction and has played the amortization again.

Drawings

Fig. 1 is a front view of a first embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

The first embodiment is as follows:

as shown in fig. 1, the utility model discloses a two-chamber muffler, including muffler casing 1, the muffler casing 1 both sides correspond be provided with air inlet 2 and gas outlet 3, be provided with the muffler inner chamber in the muffler casing 1, the muffler inner chamber includes front end muffler 4 and rear end muffler 5, connect through conveying passageway 6 between front end muffler 4 and the rear end muffler 5, conveying passageway 6 both sides are provided with amortization cotton chamber 7.

In the technical scheme, the purpose of noise reduction is further achieved through the design of the conveying passageway 6 and the noise reduction cotton cavity 7.

The front end silencer 4 is internally connected with a silencing partition plate 9 through a vibration shaft 8.

In the above technical solution, the airflow passes through the front end silencer 4, and the vibration shaft 8 and the silencing partition plate 9 are used in cooperation, so that the vibration counteracts the whistling movement of the airflow, and the purpose of silencing is achieved.

And a silencing guide plate 10 inclined towards the air outlet is arranged in the rear-end silencer 5.

In the above technical scheme, the silencing guide plate 10 serves to guide the direction and also has a silencing effect.

A vibration outer shaft 11 is arranged in the silencer shell 1, and the vibration outer shaft 11 is connected with the front end silencer 4 and the rear end silencer 5.

In the above technical scheme, the airflow passes through the silencer casing 1, and further reaches the silencing effect through the cooperation of the vibration outer shaft 11 in the silencer casing 1 and the vibration shaft 8.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A dual chamber muffler characterized in that: including the muffler casing, what muffler casing both sides correspond is provided with air inlet and gas outlet, be provided with the muffler inner chamber in the muffler casing, the muffler inner chamber includes front end muffler and rear end muffler, connect through conveying passageway between front end muffler and the rear end muffler, conveying passageway both sides are provided with the cotton chamber of amortization.

2. The dual chamber muffler according to claim 1, wherein: and the front end silencer is internally connected with a silencing partition plate through a vibrating shaft.

3. The dual chamber muffler according to claim 2, wherein: and a silencing guide plate inclined towards the air outlet is arranged in the rear-end silencer.

4. The dual chamber muffler according to claim 3, wherein: a vibration outer shaft is arranged in the shell of the silencer and connected with a front end silencer and a rear end silencer.