CN104234783A - Exhaust silencer special for eliminating low-frequency noise - Google Patents

Exhaust silencer special for eliminating low-frequency noise Download PDF

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Publication number
CN104234783A
CN104234783A CN201410487773.7A CN201410487773A CN104234783A CN 104234783 A CN104234783 A CN 104234783A CN 201410487773 A CN201410487773 A CN 201410487773A CN 104234783 A CN104234783 A CN 104234783A
Authority
CN
China
Prior art keywords
exhaust silencer
cover
air inlet
frequency noise
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410487773.7A
Other languages
Chinese (zh)
Inventor
翟明超
王龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Original Assignee
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHUCHENG HAIDEWEI MACHINE CO Ltd filed Critical ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority to CN201410487773.7A priority Critical patent/CN104234783A/en
Publication of CN104234783A publication Critical patent/CN104234783A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an exhaust silencer special for eliminating low-frequency noise. The exhaust silencer is characterized in that two ends of a cylindrical shell are respectively meshed with a front end cover and a back end cover; an air inlet diffusion tube and an air outlet diffusion tube are supported on the upper side and the lower side in the cylindrical shell through a first partition, a second partition and a third partition; an intermedium tube is arranged at the closed end of the air inlet diffusion tube in a sleeving manner; the outer surfaces of the air inlet diffusion tube, the air outlet diffusion tube and the intermedium tube are provided with netty air holes; two sides of the second partition are respectively provided with air holes. Therefore, the exhaust silencer retains an advantage of good effect of eliminating medium- and high-frequency noise of a resistant exhaust silencer, the low-frequency noise of an engine is effectively eliminated through reflecting action between the tubes, and the exhaust silencer achieves a good effect in the actual vehicle-mounted use.

Description

A kind of special exhaust silencer eliminating low-frequency noise
Technical field
The invention belongs to engine exhaust muffler, particularly relate to a kind of special exhaust silencer utilizing the resonance between tube and tube to eliminate low frequency noise.
Background technique
At present, existing engine exhaust muffler mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, some sound wave goes back to sound source reflects, and not by the outlet of silencing apparatus, thus reach the object of noise elimination.This resistance exhaust silencer centering, high-frequency silencing noise effect are better.But the contradiction that this silencing apparatus exists is the low-frequency noise that can not effectively reduce a certain frequency, so undesirable to the soundproof effect of low frequency noise.
Summary of the invention
The object of the present invention is to provide a kind of in whole frequency range, the special exhaust silencer that especially low frequency a certain frequency soundproof effect is good.
To achieve these goals, the present invention is occluding with front cover and rear end cover respectively at the two ends of cylindrical case, in upper and lower both sides, the inside of cylindrical case by the first dividing plate, second partition and the 3rd membrane support have air inlet diffusing tube and diffusing tube of giving vent to anger, front cover is stretched out in one end of described air inlet diffusing tube, the other end is closed, rear end cover is stretched out in one end of described diffusing tube of giving vent to anger, the other end is closed, intervalve is had at the closed end cover of air inlet diffusing tube, at described air inlet diffusing tube, give vent to anger diffusing tube and intervalve outer surface on be respectively equipped with netted pore, vent is respectively equipped with in the both sides of described second partition.
By above setting, the present invention maintains resistance exhaust silencer centering, advantage that high frequency noise soundproof effect is good, and effectively eliminated the low-frequency noise of motor by the reflecting action between tube and tube, in actual entrucking uses, obtain good effect.
Accompanying drawing explanation
Now the present invention will be further described by reference to the accompanying drawings.
Fig. 1 is structural representation of the present invention.
Fig. 2 is A-A sectional view.
Fig. 3 is B-B sectional view.
Fig. 4 is C-C sectional view.
In figure: 1, cylindrical case, 2, front cover, 3, rear end cover, the 4, first dividing plate, 5, second partition, the 6, the 3rd dividing plate, 7, air inlet diffusing tube, 8, diffusing tube of giving vent to anger, 9, intervalve, 10, vent.
Embodiment
As Fig. 1, 2, 3, shown in 4, the present invention is occluding with front cover 2 and rear end cover 3 respectively at the two ends of cylindrical case 1, in upper and lower both sides, the inside of cylindrical case 1 by the first dividing plate 4, second partition 5 and the 3rd dividing plate 6 are supported with air inlet diffusing tube 7 and diffusing tube 8 of giving vent to anger, front cover 2 is stretched out in one end of described air inlet diffusing tube 7, the other end is closed, rear end cover 3 is stretched out in described one end of giving vent to anger diffusing tube 8, the other end is closed, intervalve 9 is had at the closed end cover of air inlet diffusing tube 7, at described air inlet diffusing tube 7, give vent to anger diffusing tube 8 and intervalve 9 outer surface on be respectively equipped with netted pore, vent 10 is respectively equipped with in the both sides of described second partition 5.By above setting, air inlet diffusing tube 7 of the present invention is entered from engine exhaust pipe, through the reflecting action of intervalve 9, eliminate the low-frequency noise of a certain frequency, the inside of cylindrical case 1 is entered again by the netted pore on intervalve 9, then enter diffusing tube 8 of giving vent to anger inner, by the netted pore of giving vent to anger on diffusing tube 8, motor high-frequency noise is eliminated.

Claims (1)

1. eliminate the special exhaust silencer of low-frequency noise for one kind, it is characterized in that: be occluding with front cover and rear end cover respectively at the two ends of cylindrical case, in upper and lower both sides, the inside of cylindrical case by the first dividing plate, second partition and the 3rd membrane support have air inlet diffusing tube and diffusing tube of giving vent to anger, front cover is stretched out in one end of described air inlet diffusing tube, the other end is closed, rear end cover is stretched out in one end of described diffusing tube of giving vent to anger, the other end is closed, intervalve is had at the closed end cover of air inlet diffusing tube, at described air inlet diffusing tube, give vent to anger diffusing tube and intervalve outer surface on be respectively equipped with netted pore, vent is respectively equipped with in the both sides of described second partition.
CN201410487773.7A 2014-09-22 2014-09-22 Exhaust silencer special for eliminating low-frequency noise Pending CN104234783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410487773.7A CN104234783A (en) 2014-09-22 2014-09-22 Exhaust silencer special for eliminating low-frequency noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410487773.7A CN104234783A (en) 2014-09-22 2014-09-22 Exhaust silencer special for eliminating low-frequency noise

Publications (1)

Publication Number Publication Date
CN104234783A true CN104234783A (en) 2014-12-24

Family

ID=52223578

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410487773.7A Pending CN104234783A (en) 2014-09-22 2014-09-22 Exhaust silencer special for eliminating low-frequency noise

Country Status (1)

Country Link
CN (1) CN104234783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105003322A (en) * 2015-07-24 2015-10-28 苏州鸿锦利气体设备有限公司 Silencer of nitrogen making machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105003322A (en) * 2015-07-24 2015-10-28 苏州鸿锦利气体设备有限公司 Silencer of nitrogen making machine

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Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20141224

WD01 Invention patent application deemed withdrawn after publication