CN202835736U - Plate type silencer with different thickness sound absorbing plates arranged at intervals - Google Patents

Plate type silencer with different thickness sound absorbing plates arranged at intervals Download PDF

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Publication number
CN202835736U
CN202835736U CN 201220535753 CN201220535753U CN202835736U CN 202835736 U CN202835736 U CN 202835736U CN 201220535753 CN201220535753 CN 201220535753 CN 201220535753 U CN201220535753 U CN 201220535753U CN 202835736 U CN202835736 U CN 202835736U
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CN
China
Prior art keywords
sound absorbing
intervals
type silencer
absorbing plates
shell
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 - Lifetime
Application number
CN 201220535753
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Chinese (zh)
Inventor
冯苗锋
黄青青
王继荣
沈希
王庭佛
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.)
China Shipbuilding NDRI Engineering Co Ltd
Original Assignee
China Shipbuilding NDRI Engineering Co Ltd
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Filing date
Publication date
Application filed by China Shipbuilding NDRI Engineering Co Ltd filed Critical China Shipbuilding NDRI Engineering Co Ltd
Priority to CN 201220535753 priority Critical patent/CN202835736U/en
Application granted granted Critical
Publication of CN202835736U publication Critical patent/CN202835736U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a plate type silencer with different thickness sound absorbing plates arranged at intervals. The plate type silencer with the different thickness sound absorbing plates arranged at intervals comprises the multiple sound absorbing plates arranged inside a shell. The plate type silencer with the different thickness sound absorbing plates arranged at intervals is characterized in that the multiple sound absorbing plates are two types of sound absorbing plates with different thicknesses and fixedly arranged in the shell at intervals, one end of each sound absorbing plate is in a tapered diversion structure, and the other end of each sound absorbing plate is in an arc-shaped diversion structure. Compared with the prior art, the plate type silencer with the different thickness sound absorbing plates arranged at intervals has high sound reducing capacity in the whole broadband, and is compact in structure, small in occupied space, good in noise reduction effect, low in manufacturing cost, and especially suitable for being used for eliminating noise in a ventilating air-conditioning system which has high requirements for the acoustic environment.

Description

The strip-type silencer that a kind of thickness is alternate
Technical field
The utility model relates to field of environment engineering technology, and is especially a kind of for the alternate strip-type silencer of the thickness of ventilation and air conditioning system.
Background technology
For places such as the office that quiet comfort requirement is arranged, market, hotel or laboratories, especially the air conditioner pipe-line system of star hotel and Office Building often needs the processing of eliminating the noise, and wherein the most commonly used is to increase resistive plate silencer in pipe-line system.Resistive plate silencer is a kind of absorption-type silencer that utilizes acoustic resistance to eliminate the noise, and when namely utilizing sound wave to propagate in porous sound-absorbing material, dissipates because friction is converted into heat energy with acoustic energy, thereby reaches the purpose of noise elimination.In general, resistive strip-type silencer has good medium-high frequency acoustic attenuation performance, suitably increases thickness and the density of silencer sound-absorbing material, can increase the low frequency acoustic attenuation performance.Yet air conditioner is strict especially to the requirement of reproduced air-flow noise, the pressure loss, wind speed and appearance and size with dissipative muffler.
The domestic strip-type silencer of using for ventilation and air conditioning system is generally selected design according to national standard drawings " ZP matrix formula silencer ZW type noise elimination bend pipe " at present, and it is ZP that all anechoic sheet thickness of the ZP type silencer in this atlas are 100mm( 100Type), the silencer sound deadening capacity of 1 meter length is greater than 15dB (A), and shortcoming is that the soundproof effect of low frequency is relatively poor.For improving the low frequency soundproof effect, the novel ZP type silencer of having developed again afterwards anechoic sheet thickness and be 200mm (is ZP 200Type), but the silencer sectional dimension is larger, and it is larger to take up room, and is unfavorable for the design and installation of air conditioner pipe-line system.
The utility model content
The purpose of this utility model is the alternate strip-type silencer of a kind of thickness that designs for the deficiency of existing air conditioner noise elimination technique, it adopts the anechoic sheet interval of two kinds of thickness to arrange, sound deadening capacity in low frequency frequency domain scope can improve more than the 3dB, has not only kept traditional Z P 100Outside the soundproof effect of matrix formula silencer to medium-high frequency, have again ZP concurrently 200The type silencer preferably resolves ZP to the good soundproof effect of low frequency 200The problem that type silencer sectional dimension is bigger than normal is a kind of to the equal model muffler of good soundproof effect of broadband, and the noise elimination that is particularly useful for the higher ventilation and air conditioning system of criteria of noise control is processed.
The concrete technical scheme that realizes the utility model purpose is: the strip-type silencer that a kind of thickness is alternate, comprise setting several pieces anechoic sheets in the enclosure, the shell two ends are provided with conical head, be characterized in that several pieces anechoic sheets are that two kinds of thickness do not wait and be spaced the acoustic board that is fixedly installed in the enclosure, described anechoic sheet two ends are respectively equipped with conical flow guiding structure and circular arc flow-guiding structure; The conical flow guiding structure of described several pieces anechoic sheets is arranged on an end of shell, and its circular arc flow-guiding structure is arranged on the other end of shell.
Described anechoic sheet is the zinc-plated sheet material of perforation or the porous sound-absorbing material of Pierced Aluminum Plank and centrifugally glass-wool and the acoustic board that lightgage steel joist is made.
The utility model compared with prior art all has higher sound deadening capacity on whole broadband, compact conformation, and it is little to take up room, low cost of manufacture, excellent noise reduction effect, the noise elimination that is particularly useful for ventilation and air conditioning system that sound environment quality is had relatively high expectations is processed.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the A-A profile of Fig. 1
The specific embodiment
Consult accompanying drawing 1 ~ accompanying drawing 2, the utility model forms by being arranged on several pieces anechoic sheets 2 in the shell 1 and the conical head 4 at shell 1 two ends, described several pieces anechoic sheets 2 are that two kinds of thickness do not wait and be spaced the acoustic board that is fixedly installed in the shell 1, described anechoic sheet 2 adopts the zinc-plated sheet material of perforation or the porous sound-absorbing material of Pierced Aluminum Plank and centrifugally glass-wool and the end that lightgage steel joist is made to be provided with conical flow guiding structure 3, and its other end is provided with the acoustic board of circular arc flow-guiding structure 5; The conical flow guiding structure 3 of described several pieces anechoic sheets 2 is arranged on an end of shell 1, and its circular arc flow-guiding structure 5 is arranged on the other end of shell 1.
The utility model is installed and used like this: the conical head 4 at the utility model two ends is connected on the airduct of ventilation and air conditioning system, the conical flow guiding structure 3 of anechoic sheet 2 is facing to the windward side of airduct, its circular arc flow-guiding structure 5 is the lee face of airduct, the sound deadening capacity of 1 meter length of the utility model can reach at most 18dB (A), and noise reduction is good.
More than just the utility model being further described, is not to limit this patent, and all is that the utility model equivalence is implemented, and all should be contained within the claim scope of this patent.

Claims (2)

1. strip-type silencer that thickness is alternate, comprise several pieces anechoic sheets (2) that are arranged in the shell (1), shell (1) two ends are provided with conical head (4), it is characterized in that several pieces anechoic sheets (2) are that two kinds of thickness do not wait and be spaced the acoustic board that is fixedly installed in the shell (1), described anechoic sheet (2) two ends are respectively equipped with conical flow guiding structure (3) and circular arc flow-guiding structure (5); The conical flow guiding structure (3) of described several pieces anechoic sheets (2) is arranged on an end of shell (1), and its circular arc flow-guiding structure (5) is arranged on the other end of shell (1).
2. the alternate strip-type silencer of described thickness according to claim 1 is characterized in that described anechoic sheet (2) is the zinc-plated sheet material of perforation or the porous sound-absorbing material of Pierced Aluminum Plank and centrifugally glass-wool and the acoustic board that lightgage steel joist is made.
CN 201220535753 2012-10-19 2012-10-19 Plate type silencer with different thickness sound absorbing plates arranged at intervals Expired - Lifetime CN202835736U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220535753 CN202835736U (en) 2012-10-19 2012-10-19 Plate type silencer with different thickness sound absorbing plates arranged at intervals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220535753 CN202835736U (en) 2012-10-19 2012-10-19 Plate type silencer with different thickness sound absorbing plates arranged at intervals

Publications (1)

Publication Number Publication Date
CN202835736U true CN202835736U (en) 2013-03-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220535753 Expired - Lifetime CN202835736U (en) 2012-10-19 2012-10-19 Plate type silencer with different thickness sound absorbing plates arranged at intervals

Country Status (1)

Country Link
CN (1) CN202835736U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105222320A (en) * 2015-11-04 2016-01-06 上海声望声学科技股份有限公司 Anechoic sheet
CN105715180A (en) * 2016-04-08 2016-06-29 中船第九设计研究院工程有限公司 Fusiform ventilation and noise elimination louver curtain wall
CN107492369A (en) * 2017-09-21 2017-12-19 北京天润康隆科技股份有限公司 A kind of micropore rock beam series silencer
CN107676954A (en) * 2017-11-07 2018-02-09 深圳前海纳普声学科技有限公司 A kind of silencing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105222320A (en) * 2015-11-04 2016-01-06 上海声望声学科技股份有限公司 Anechoic sheet
CN105715180A (en) * 2016-04-08 2016-06-29 中船第九设计研究院工程有限公司 Fusiform ventilation and noise elimination louver curtain wall
CN107492369A (en) * 2017-09-21 2017-12-19 北京天润康隆科技股份有限公司 A kind of micropore rock beam series silencer
CN107676954A (en) * 2017-11-07 2018-02-09 深圳前海纳普声学科技有限公司 A kind of silencing apparatus

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CX01 Expiry of patent term

Granted publication date: 20130327

CX01 Expiry of patent term