CN202024455U - Return air silencing device - Google Patents
Return air silencing device Download PDFInfo
- Publication number
- CN202024455U CN202024455U CN 201120095933 CN201120095933U CN202024455U CN 202024455 U CN202024455 U CN 202024455U CN 201120095933 CN201120095933 CN 201120095933 CN 201120095933 U CN201120095933 U CN 201120095933U CN 202024455 U CN202024455 U CN 202024455U
- Authority
- CN
- China
- Prior art keywords
- return air
- housing
- absorbing material
- armour layer
- silencing apparatus
- 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
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to a silencing device, in particular to a return air silencing device. The return air silencing device is characterized in that the return air silencing device comprises a shell body, a middle silencing body, a bottom border and a mounting base, wherein an air inlet is arranged at the upper part of the side surface of the shell body; an air outlet is arranged at the bottom of the shell body; foam sound-absorbing material is attached at the inner side of the shell body, the foam sound-absorbing material is wrapped by an armour layer, and the armour layer is externally provided with a perforated plate; the middle silencing body is arranged at the middle part of the bottom border and is internally provided with a deflector, the foam sound-absorbing material is attached at two sides of the deflector and is wrapped by one armour layer, and the armour layer is externally provided with one perforated plate; and the shell body is connected with the bottom border by a locking buckle and is tightly fixed on the mounting base. The return air silencing device has good silencing effect and reasonable structure and is firm and durable.
Description
Technical field
The utility model relates to a kind of silencing apparatus, specifically in air-conditioning, the ventilating system, is used to prevent or suppress a kind of return air silencing apparatus of noise.
Background technology
At the pipeline noise in the marine air conditioning ventilating system, generally adopt silencer to be decayed, and, make the air conditioner ventilation noise obtain good restraining in measures such as air conditioner chamber's wall attaching sound absorption materials.And for needs return air air conditioner chamber, traditional method is by perforate on air conditioner chamber's bulkhead, install back the style grid then and make the noise in the air conditioner chamber pass near cabin or corridor by the return air grid, but this can influence crewman's normal rest and work.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of noise elimination effective at the deficiencies in the prior art part, and is rational in infrastructure, fastening durable return air silencing apparatus.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
The return air silencing apparatus, it is characterized in that: comprise housing, middle muffler body, underframe and mounting base, the top of described housing side is provided with air inlet, housing bottom is provided with air outlet, the inboard foamed sound-absorbing material that attaches of housing, foamed sound-absorbing material coats armour layer outward, armour layer is provided with perforated plate outward, muffler body is located at the underframe middle part in the middle of described, is provided with deflector in the middle muffler body, and the deflector both sides attach foamed sound-absorbing material, foamed sound-absorbing material coats armour layer outward, armour layer is provided with perforated plate outward, and described housing links to each other by hasp with underframe, and is anchored on the mounting base.
Press such scheme, described armour layer is a glass wool cloth.
Press such scheme, described foamed sound-absorbing material adopts rivet to be connected with housing.
Press such scheme, described perforated plate adopts rivet to be connected with housing, is provided with reinforcement between perforated plate and the housing.
Press such scheme, described reinforcement is Z type or U type cross section reinforcement.
Press such scheme, described middle muffler body upper end is provided with the inclination angle, forms deflection cone.
Press such scheme, described deflector adopts Type of Welding to be connected with underframe.
Compared with prior art, the utlity model has following advantage:
1) the high, medium and low audio-frequency noise attenuating of the utility model is good, drag losses is little, its sound deadening capacity 〉=25dB (A), drag losses≤30Pa, and the middle muffler body that is provided with can make its internal process even, be difficult for forming dead corner, and can further reduce and increase the noise sound deadening capacity, improve the noise attentuation effect, solved the problem that return air grid position does not have acoustic attenuation performance;
2) rational in infrastructure, fastening durable, low price has remarkable economic efficiency and social benefit;
3) adopt rivet to connect in the utility model between foamed sound-absorbing material and the housing, make things convenient for the maintenance of foamed sound-absorbing material;
4) foamed sound-absorbing material that uses of the utility model is compared with conventional mineral wool sound-absorbing material, and outer surface can not coated cover layer, and is nontoxic, and acoustically effective is good, low price.
Description of drawings
Fig. 1 is the front view of an embodiment of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples content of the present utility model is done to describe further.
As depicted in figs. 1 and 2, the return air silencing apparatus, comprise housing 2, middle muffler body 6, underframe 11, mounting base 8, the top of described housing side is provided with air inlet 1, housing bottom is provided with air outlet, the inboard foamed sound-absorbing material 3 that attaches of housing, described foamed sound-absorbing material adopts rivet to be connected with housing, foamed sound-absorbing material coats glass wool cloth armour layer 4 outward, armour layer is provided with perforated plate 5 outward, described perforated plate adopts rivet to be connected with housing, is provided with Z type or U type cross section reinforcement between perforated plate and the housing.Muffler body is located at the underframe middle part in the middle of described, be provided with deflector 7 in the middle muffler body, deflector adopts Type of Welding to be connected with underframe, the deflector both sides attach foamed sound-absorbing material, foamed sound-absorbing material coats the glass wool cloth armour layer outward, armour layer is provided with perforated plate outward, and middle muffler body upper end is provided with chamfering.Described underframe links to each other by hasp 10 with housing, and is anchored on the mounting base by securing member 9.
When air conditioner chamber needs return air, under the effect of inside and outside differential static pressure, air out of my cabin enters blast pipe by return air grid 12, shunt by middle muffler body again, air outlet by housing enters in the air conditioner chamber 13 at last, satisfy the requirement of air-conditioner return air, stop interior noise simultaneously to out of my cabin transmission.
Mounting base can adopt Type of Welding or securing member installation form with the deck in this return air silencing apparatus, and the height of mounting base can be regulated according to cabin altitude.The thickness of shell dimension and foam deadener can be adjusted according to actual needs.
Claims (7)
1. return air silencing apparatus, it is characterized in that: comprise housing, middle muffler body, underframe and mounting base, the top of described housing side is provided with air inlet, housing bottom is provided with air outlet, the inboard foamed sound-absorbing material that attaches of housing, foamed sound-absorbing material coats armour layer outward, armour layer is provided with perforated plate outward, muffler body is located at the underframe middle part in the middle of described, is provided with deflector in the middle muffler body, and the deflector both sides attach foamed sound-absorbing material, foamed sound-absorbing material coats armour layer outward, armour layer is provided with perforated plate outward, and described housing links to each other by hasp with underframe, and is anchored on the mounting base.
2. return air silencing apparatus according to claim 1 is characterized in that: described armour layer is a glass wool cloth.
3. return air silencing apparatus according to claim 1 is characterized in that: described foamed sound-absorbing material adopts rivet to be connected with housing.
4. return air silencing apparatus according to claim 1 is characterized in that: described perforated plate adopts rivet to be connected with housing, is provided with reinforcement between perforated plate and the housing.
5. return air silencing apparatus according to claim 4 is characterized in that: described reinforcement is Z type or U type cross section reinforcement.
6. return air silencing apparatus according to claim 1 is characterized in that: the muffler body upper end is provided with the inclination angle in the middle of described, forms deflection cone.
7. return air silencing apparatus according to claim 1 is characterized in that: described deflector adopts Type of Welding to be connected with underframe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120095933 CN202024455U (en) | 2011-04-02 | 2011-04-02 | Return air silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120095933 CN202024455U (en) | 2011-04-02 | 2011-04-02 | Return air silencing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024455U true CN202024455U (en) | 2011-11-02 |
Family
ID=44849403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120095933 Expired - Lifetime CN202024455U (en) | 2011-04-02 | 2011-04-02 | Return air silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202024455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730667A (en) * | 2016-02-03 | 2016-07-06 | 中国舰船研究设计中心 | Silencing electrostatic air purification device for ship |
| CN108109810A (en) * | 2017-11-29 | 2018-06-01 | 无锡澳蓝特环保科技有限公司 | Compound inlet box |
-
2011
- 2011-04-02 CN CN 201120095933 patent/CN202024455U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730667A (en) * | 2016-02-03 | 2016-07-06 | 中国舰船研究设计中心 | Silencing electrostatic air purification device for ship |
| CN105730667B (en) * | 2016-02-03 | 2020-12-04 | 中国舰船研究设计中心 | Noise elimination static air purification device for naval vessel |
| CN108109810A (en) * | 2017-11-29 | 2018-06-01 | 无锡澳蓝特环保科技有限公司 | Compound inlet box |
| CN108109810B (en) * | 2017-11-29 | 2024-04-16 | 无锡澳蓝特环保科技有限公司 | Composite air inlet box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |
|
| CX01 | Expiry of patent term |