CN104612798A - Muffler air inlet pipe - Google Patents

Muffler air inlet pipe Download PDF

Info

Publication number
CN104612798A
CN104612798A CN201310540618.2A CN201310540618A CN104612798A CN 104612798 A CN104612798 A CN 104612798A CN 201310540618 A CN201310540618 A CN 201310540618A CN 104612798 A CN104612798 A CN 104612798A
Authority
CN
China
Prior art keywords
holes
air inlet
air
inlet pipe
pore
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
CN201310540618.2A
Other languages
Chinese (zh)
Inventor
崔绍印
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.)
Tianjin Huaruida Car Muffler Co Ltd
Original Assignee
Tianjin Huaruida Car Muffler 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 Tianjin Huaruida Car Muffler Co Ltd filed Critical Tianjin Huaruida Car Muffler Co Ltd
Priority to CN201310540618.2A priority Critical patent/CN104612798A/en
Publication of CN104612798A publication Critical patent/CN104612798A/en
Pending legal-status Critical Current

Links

Abstract

The invention provides a muffler air inlet pipe which comprises a pipe body, an air inlet, through holes, air holes, a flow blocking plate, air outlets, a sound absorption wall and flow blocking holes. The air inlets are formed in one end of the pipe body, and the other end of the pipe body is closed; the air holes are formed in the middle of the pipe body, and the through holes are formed between the air inlets of the pipe body and the air holes; the sound absorption wall is arranged on the outer sides of the through holes; the air outlets are formed between the air holes of the pipe body and the closed end of the pipe body; the flow blocking plate is arranged between the air outlets in the pipe body and the air holes; and the flow blocking holes are formed in the flow blocking plate. The muffler air inlet pipe is low in cost, simple in structure and capable of guiding more gases to firstly enter a first expansion cavity; and the first expansion cavity is fully utilized, and the better muffling effect is achieved.

Description

A kind of silencer air inlet pipe
(1) technical field
The present invention relates to a kind of automotive muffler, particularly relate to a kind of silencer air inlet pipe.
(2) background technique
Automobile noise is mainly from automobile exhaust noise.If do not add silencing apparatus, under certain speed, noise can reach more than 100 decibels.Secondly be engine noise and tyre noise, engine noise, when automobile runs well, can reach more than 90 decibels, and tyre noise the speed of a motor vehicle be 90 kilometers/time more than time, about 95 decibels can be reached.Therefore, in vent systems, add silencing apparatus, automobile exhaust noise reduction 20-30 decibel can be made.Automotive muffler is the constituent elements that automobile is conventional, is conducive to reducing the noise pollution in vehicle traveling process, utilizes sound wave to superpose principle of interference and is made.To be exactly its automobile exhaust pipe be the principle of mobile muffler is made up of the pipeline that two length is different, and these two pipelines first separately cross again.Due to two pipelines length difference equal the half of the wavelength of the sound wave that automobile sends, cancel out each other and weaken the sound intensity when two row sound waves are interfered when superposing, sound being reduced, thus plays the effect of noise reduction.Existing silencing apparatus utilizes expansion cavity to realize sound wave mutually to interfere thus reduce acoustic energy usually, but when utilizing the method, the main task reducing acoustic energy is often mainly realized by the second expansion cavity, the utilization of the first expansion cavity is abundant not, and single sound reduction method is difficult to reach better soundproof effect, and want to realize repeatedly eliminating the noise, all higher with the silencing apparatus cost improving soundproof effect.Cost is low on the market now, and can make full use of the first expansion cavity, the silencing apparatus that can reach better soundproof effect is not also found, and awaits exploitation.
(3) summary of the invention
In order to overcome the deficiency of existing automotive muffler, the invention provides a kind of silencer air inlet pipe.
Technological scheme of the present invention is achieved in that
A kind of silencer air inlet pipe of this programme, comprise body, suction port, through hole, pore, spoiler, air outlet hole, sound-absorbing wall and restricted orifice, described body one end is provided with suction port, the other end of described body is closed, the middle part of described body is provided with pore, through hole is provided with between the enterprising gas port of described body and pore, described through hole arranged outside has sound-absorbing wall, some air outlet holes are provided with between one end that on described body, pore and body are closed, described body is provided with spoiler between air outlet hole and pore, described spoiler is provided with some restricted orifice.
Further, sound absorbing material is provided with in described sound-absorbing wall.
Further, the quantity of described through hole is no less than 20.
Further, the quantity of described pore is no less than 8.
Further, the quantity of described air outlet hole is no less than 20.
Further, the quantity of described restricted orifice is no less than 12.
Usefulness of the present invention is: with low cost, and structure is simple, more gas can be guided first to enter the first expansion cavity, make use of the first expansion cavity fully, reach better soundproof effect.
(4) accompanying drawing explanation
Fig. 1 is Organizational Structure schematic diagram of the present invention.
Fig. 2 is partial enlarged drawing of the present invention.
Fig. 3 is operating diagram of the present invention.
Wherein: 1-body, 2-through hole, 3-pore, 4-spoiler, 5-air outlet hole, 6-sound-absorbing wall, 7-restricted orifice, 8-steam outlet pipe, 9-first expansion cavity, 10-second expansion cavity, 11-suction port.
(5) embodiment
Below in conjunction with accompanying drawing, brief description is made to one embodiment of the present invention.
A kind of silencer air inlet pipe as shown in the figure, comprise body 1, suction port 11, through hole 2, pore 3, spoiler 4, air outlet hole 5, sound-absorbing wall 6 and restricted orifice 7, described body 1 one end is provided with suction port 11, the other end of described body 1 is closed, the middle part of described body 1 is provided with pore 3, through hole 2 is provided with between the enterprising gas port 11 of described body 1 and pore 3, described through hole 2 arranged outside has sound-absorbing wall 6, some air outlet holes 5 are provided with between one end that on described body 1, pore 3 and body 1 are closed, described body 1 is provided with spoiler 4 between air outlet hole 5 and pore 3, described spoiler 4 is provided with some restricted orifice 7.
Be provided with sound absorbing material in described sound-absorbing wall 6, the quantity of described through hole 2 is no less than 20, and the quantity of described pore 3 is no less than 8, and the quantity of described air outlet hole 5 is no less than 20, and the quantity of described restricted orifice 7 is no less than 12.
The working procedure of this example: when using of the present invention, tail gas enters body 1 by suction port 11, portion gas enters sound-absorbing wall 6 through through hole 2, sponge after partial noise through sound-absorbing material, via through holes 2 gets back to body 1, mix with remaining gas, portion gas enters the first expansion cavity 9 by pore 3, noise interferes mutually through overcompression and expansion, body 1 is again got back to by pore 3 after reducing acoustic energy, the second expansion cavity 10 is entered by the restricted orifice 7 on spoiler 4 and the air outlet hole 5 on body 1, again mutually interfere through overcompression and expansion, further reduction acoustic energy, reduce noise, last gas enters steam outlet pipe 8 by the hole on steam outlet pipe 8 and discharges silencing apparatus.Owing to being provided with spoiler 4, gas enters the second expansion cavity 10 and is obstructed, and more gas is forced to be introduced into the first expansion cavity 9, the first expansion cavity 9 is fully utilized, reduces more acoustic energy.Because restricted orifice 7 is all not identical with the direction of all the other pores, again interferes phenomenon mutually, reduce acoustic energy further.Structure of the present invention is simple, and can get to the effect of twice reduction acoustic energy by adding a spoiler 4, cost is very low, and Be very effective.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.

Claims (6)

1. a silencer air inlet pipe, comprise body (1), suction port (11), through hole (2), pore (3), spoiler (4), air outlet hole (5), sound-absorbing wall (6) and restricted orifice (7), it is characterized in that: described body (1) one end is provided with suction port (11), the other end of described body (1) is closed, the middle part of described body (1) is provided with pore (3), through hole (2) is provided with between described body (1) enterprising gas port (11) and pore (3), described through hole (2) arranged outside has sound-absorbing wall (6), some air outlet holes (5) are provided with between one end that the upper pore (3) of described body (1) and body (1) are closed, described body (1) is upper is provided with spoiler (4) between air outlet hole (5) and pore (3), described spoiler (4) is provided with some restricted orifice (7).
2. a kind of silencer air inlet pipe according to claim 1, is characterized in that: be provided with sound absorbing material in described sound-absorbing wall (6).
3. a kind of silencer air inlet pipe according to claim 1, is characterized in that: the quantity of described through hole (2) is no less than 20.
4. a kind of silencer air inlet pipe according to claim 1, is characterized in that: the quantity of described pore (3) is no less than 8.
5. a kind of silencer air inlet pipe according to claim 1, is characterized in that: the quantity of described air outlet hole (5) is no less than 20.
6. a kind of silencer air inlet pipe according to claim 1, is characterized in that: the quantity of described restricted orifice (7) is no less than 12.
CN201310540618.2A 2013-11-04 2013-11-04 Muffler air inlet pipe Pending CN104612798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310540618.2A CN104612798A (en) 2013-11-04 2013-11-04 Muffler air inlet pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310540618.2A CN104612798A (en) 2013-11-04 2013-11-04 Muffler air inlet pipe

Publications (1)

Publication Number Publication Date
CN104612798A true CN104612798A (en) 2015-05-13

Family

ID=53147419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310540618.2A Pending CN104612798A (en) 2013-11-04 2013-11-04 Muffler air inlet pipe

Country Status (1)

Country Link
CN (1) CN104612798A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401699A (en) * 2016-05-31 2017-02-15 湖南长丰汽车零部件有限责任公司 Gasoline exhaust silencer
CN109272979A (en) * 2017-07-17 2019-01-25 浙江盾安机械有限公司 Muffler and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401699A (en) * 2016-05-31 2017-02-15 湖南长丰汽车零部件有限责任公司 Gasoline exhaust silencer
CN109272979A (en) * 2017-07-17 2019-01-25 浙江盾安机械有限公司 Muffler and preparation method thereof

Similar Documents

Publication Publication Date Title
CN202417651U (en) Exhaust silencer of automobile
CN104948265A (en) Impedance compound muffler
CN205013165U (en) Engine and silencer thereof
CN203035307U (en) Integrated selective catalytic reduction (SCR) catalytic conversion muffler for diesel engine
CN203547838U (en) Multi-core resonant type silencer
CN201021648Y (en) A novel impedance compound muffling system for car engine air supply system
CN203161318U (en) Broadband noise silencer
CN204729151U (en) A kind of automotive muffler
CN104612798A (en) Muffler air inlet pipe
CN204716362U (en) Engineering machinery noise-reducing silencer
CN105134337A (en) Automobile exhaust muffler
CN209557068U (en) Impedance composite muffler
CN205172688U (en) Vehicle exhaust gas purifier
CN203584533U (en) Air inlet pipe of silencer
CN203584515U (en) Novel silencer air inlet pipe
CN106285874A (en) A kind of compound muffler for vehicle
CN104612787A (en) Silencer air vent pipe
CN203584516U (en) Silencer with S-shaped partition plates
CN201090275Y (en) Engine exhaust system
CN102367791A (en) Intake silencer used in air compressor of light truck pneumatic brake system
CN105464755A (en) Automobile muffler
CN206681825U (en) A kind of Exhaust Muffler of Car system
CN201916202U (en) Compressor muffler device and compressor having same
CN202596840U (en) Automobile muffler
CN204703984U (en) Impedance composite muffler

Legal Events

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

Application publication date: 20150513