CN202047880U - Novel impedance composite silencer - Google Patents

Novel impedance composite silencer Download PDF

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Publication number
CN202047880U
CN202047880U CN201120081098XU CN201120081098U CN202047880U CN 202047880 U CN202047880 U CN 202047880U CN 201120081098X U CN201120081098X U CN 201120081098XU CN 201120081098 U CN201120081098 U CN 201120081098U CN 202047880 U CN202047880 U CN 202047880U
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CN
China
Prior art keywords
impedance composite
inner chamber
novel impedance
suction tude
inner cavity
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.)
Expired - Fee Related
Application number
CN201120081098XU
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Chinese (zh)
Inventor
吴明飞
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.)
NANJING SANKE MEDICAL INSTRUMENT Co Ltd
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NANJING SANKE MEDICAL INSTRUMENT Co Ltd
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Filing date
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Priority to CN201120081098XU priority Critical patent/CN202047880U/en
Application granted granted Critical
Publication of CN202047880U publication Critical patent/CN202047880U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a novel impedance composite silencer, which comprises an outer casing, an inner cavity, a gas inlet pipe, a compression pipe and a gas outlet. One end of the gas inlet pipe extends out of the outer casing, the other end of the gas inlet pipe is disposed in the inner cavity and communicated with the compression pipe, the inner cavity of the silencer is in a hollow structure, a plurality of wavy partitions are arranged in the inner cavity, a small close gap is reserved between each two partitions, and silencing sponge is filled in the inner cavity. Under joint action of the wavy partitions and the silencing sponge, noise is more reduced, and compared with the traditional silencer, the novel impedance composite silencer is simple in structure, low in cost, convenient to use, effective in silencing and the like.

Description

Novel impedance composite muffler
[technical field]
The utility model relates to a kind of device of eliminating or reducing duct noise, is specifically related to a kind of novel impedance composite muffler that is used to reduce oxygen machine pneumatic noise.
[background technique]
Chang Yong silencing apparatus is divided three classes traditionally: absorption-type dissipative muffler, resonance type reactive muffler and with two kinds of compounded impedance mufflers of principle.Dissipative muffler is provided with sound-absorbing material in pipeline, consumption and decay are by the noise of pipe gas flow, reactive muffler utilizes geometrical shape to make noise interreflection, resonance, interference, stack and sound energy consumption in pipeline, and impedance complex formula silencing apparatus has resistive and advantages two kinds of silencing apparatuss of resistance simultaneously.In the common medical oxygen generator working procedure, the air-flow of its discharge can produce bigger noise, and Environmental Conditions is had no small influence.The general size of silencer that existing medical oxygen generator is adopted is bigger than normal, complex structure, noise reduction mode are single, has influenced noise reduction.
[model utility content]
The technical problems to be solved in the utility model is, shortcoming at the existence of conventional pipelines silencing apparatus, dissipative muffler and reactive muffler are organically combined, provide a kind of have concurrently both acoustic characteristicses, simple in structure, little, the effective novel impedance composite muffler of eliminating the noise takes up room.
In order to solve the problems of the technologies described above, the utility model provides a kind of novel impedance composite muffler, comprise shell, inner chamber, suction tude, compressed pipe and air outlet, suction tude one end is stretched in outside the frame, the other end places inner chamber to be connected with compressed pipe, the silencing apparatus inner chamber is a hollow-core construction, wherein is provided with several piece waveform partition, is the closely-spaced setting of close joint between each piece partition.
Further, in above-mentioned novel impedance composite muffler, described waveform partition is the staggered symmetric arrays of head and the tail.
Further, in above-mentioned novel impedance composite muffler, fill out in the described inner chamber and be provided with the noise reduction sponge.
Further, in above-mentioned novel impedance composite muffler, described compressed pipe is one section cavity that directly communicates with suction tude, and pipeline section is long-pending less than suction tude.
When novel impedance composite muffler of the present utility model is worked, air-flow enters after the sectional area that the overvoltage draw passes through owing to varying aperture reduces from suction tude, the very fast explosion sound of air-flow reduces, pass through reflection, the counteracting of waveform partition again, and the noise elimination sponge is to the absorption of sound wave in the cavity, and final pneumatic noise of discharging weakens greatly, and acoustic wave filter structure is simply compact simultaneously, boundary dimension is little, can conveniently be applied to different noise reduction environment.
[description of drawings]
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a structural representation of the present utility model.
[embodiment]
See also Fig. 1, this novel impedance composite muffler comprises shell 1, inner chamber 2, suction tude 3, compressed pipe 4 and air outlet 5, it is external that suction tude 3 one ends are stretched in shell 1, the other end places inner chamber 2 to be connected with compressed pipe 4, compressed pipe 4 is one section cavity that directly communicates with suction tude 3, and pipeline section is long-pending less than suction tude 3.Silencing apparatus inner chamber 2 is a hollow-core construction, wherein is provided with several piece waveform partition 6, is the closely-spaced setting of close joint between each piece partition 6, the staggered symmetric arrays of head and the tail.Also fill out in inner chamber and be provided with noise reduction sponge 7, separated by waveform partition 6, the setting of noise elimination sponge 7 can increase acoustically effective.
When air-flow enters from suction tude 3, because the variation of pipeline section area forms a resistant noise-reducing unit, slowed down the very fast explosion sound of medium and low frequency that air flow inlet produces through compressed pipe 4.Follow the wave-like type cavity that airflow passes partition 6 forms, because partition is staggered, make air-flow path form tortuous shape, when air communication is crossed partition 6, thereby noise interreflection, resonance, interference, stack between partition 6 that air-flow is produced reach sound energy consumption, reduce the purpose of noise, have formed another resistant noise-reducing unit like this.Simultaneously noise reduction sponge 7 is set between the partition 6 in silencing apparatus inner chamber 2, has formed absorptive-type resistive noise reduction unit, pneumatic noise medium-high frequency sound wave is had outstanding noise elimination effect.Having passed through the pneumatic noise of finally discharging from the air outlet after above-mentioned three grades of noise elimination effects weakens greatly.
Than prior art, impedance of the present utility model meets the type silencing apparatus by sectional area variation, partition obstruct and three grades of noise elimination unit such as reflection, sound-absorbing material, pneumatic noise is better reduced under resistive and reactive muffling element compound action, its boundary dimension is little simultaneously preferably for noise reduction, simple in structure, can be used for for example NR noise reduction of more multi-field pipelines such as boiler room, Generators, air draft Fan pipeline, compressor, air-conditioning duct.
Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (4)

1. a novel impedance composite muffler comprises shell, inner chamber, suction tude, compressed pipe and air outlet, and suction tude one end is stretched in outside the frame, and the other end places inner chamber to be connected with compressed pipe, it is characterized in that:
Described silencing apparatus inner chamber is a hollow-core construction, wherein is provided with several piece waveform partition, is the closely-spaced setting of close joint between each piece partition.
2. novel impedance composite muffler according to claim 1 is characterized in that: described waveform partition is the staggered symmetric arrays of head and the tail.
3. novel impedance composite muffler according to claim 1 is characterized in that: fill out in the described inner chamber and be provided with the noise reduction sponge.
4. novel impedance composite muffler according to claim 1 is characterized in that: described compressed pipe is one section cavity that directly communicates with suction tude, and pipeline section is long-pending less than suction tude.
CN201120081098XU 2011-03-19 2011-03-19 Novel impedance composite silencer Expired - Fee Related CN202047880U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120081098XU CN202047880U (en) 2011-03-19 2011-03-19 Novel impedance composite silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120081098XU CN202047880U (en) 2011-03-19 2011-03-19 Novel impedance composite silencer

Publications (1)

Publication Number Publication Date
CN202047880U true CN202047880U (en) 2011-11-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120081098XU Expired - Fee Related CN202047880U (en) 2011-03-19 2011-03-19 Novel impedance composite silencer

Country Status (1)

Country Link
CN (1) CN202047880U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103470343A (en) * 2013-09-22 2013-12-25 无锡阳工机械制造有限公司 Silencer
CN107664048A (en) * 2017-11-27 2018-02-06 田齐芳 A kind of silencer
CN108962210A (en) * 2018-07-12 2018-12-07 西南石油大学 A kind of Combined type muffler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103470343A (en) * 2013-09-22 2013-12-25 无锡阳工机械制造有限公司 Silencer
CN107664048A (en) * 2017-11-27 2018-02-06 田齐芳 A kind of silencer
CN108962210A (en) * 2018-07-12 2018-12-07 西南石油大学 A kind of Combined type muffler

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111123

Termination date: 20150319

EXPY Termination of patent right or utility model