CN203571993U - Noise abatement bend muffler - Google Patents
Noise abatement bend muffler Download PDFInfo
- Publication number
- CN203571993U CN203571993U CN201320489761.9U CN201320489761U CN203571993U CN 203571993 U CN203571993 U CN 203571993U CN 201320489761 U CN201320489761 U CN 201320489761U CN 203571993 U CN203571993 U CN 203571993U
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- absorbing material
- sound
- housing
- noise
- bend muffler
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Abstract
The utility model provides a noise abatement bend muffler comprising a housing and a sound absorption layer. The sound absorption layer is composed of three layers including a housing steel plate, a sound absorbing material and a built-in frame. The housing steel plate and the built-in frame are in fixed connection via draw rivets. The sound absorbing material is placed between the housing steel plate and the built-in frame. A plurality of noise abatement guide sheets is disposed inside the housing. The noise abatement bend muffler is firm and durable, has stable performance and can effectively reduce noise. The noise reduction and abatement amount of a noise abatement static pressure case is 8 to 15dB(A). Moreover, the noise abatement bend muffler can reduce noise, also enables even static pressure outlet wind to be obtained, enables dynamic pressure loss to be reduced, and has good high, medium and low frequency noise abatement properties.
Description
Technical field
The utility model relates to noise elimination technique field, particularly a kind of bend muffler.
Background technology
Along with scientific and technical development, the raising of people's living standard, more urgent to creating the requirement of good acoustic environment, the buildings such as house, hospital, hotel, office building are required to more comfortable, quiet environment.The field of acoustics is very wide, and it almost touches the various aspects of practice of human life, and architectural acoustics is a branch of acoustics.In Modern Architecture, utilize air-conditioning system to set up the very extensive of artificial climate indoor.That comfort air conditioning system or industrial air-conditioning all exist control noise problem.The content of Noise in Air Conditioning System control mainly comprises lowering by ventilation blower and produces and by airborne noise, the pneumatic noise of pipe transmmision, and the solid-borne noise of being propagated along building structure by air-conditioning, refrigeration plant vibration.Its objective is and make idle call room reach the standard-required that allows noise.So in ventilation shaft corner, bend muffler being set in ventilating system is to fall one of low noise necessary equipment.
Bend muffler is that one can make air-flow when by pipeline turning, not produce quadratic noise and can allow that air-flow is unresisted to be passed through, and can effectively stop or weaken again the device that acoustic energy is outwards propagated.Bend muffler is improved and is formed on the basis of silencer, and bend muffler not only can be used to reduce noise, can obtain again uniform wind speed, reduces dynamic pressure loss.
The problems such as bend muffler in the market exists firm not, and soundproof effect is undesirable, and after eliminating the noise, allocation of the amount of air is inhomogeneous, air quantity seriously weakens.
Utility model content
The technical problems to be solved in the utility model is to overcome existing defect, provide a kind of rational in infrastructure, sturdy and durable, soundproof effect is outstanding, can produce uniform static pressure air-out after eliminating the noise, reduce the bend muffler of dynamic pressure loss.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of bend muffler of the utility model, comprise housing, absorbent treatment, described absorbent treatment is comprised of three layers of shell steel plate, sound-absorbing material and internal frames, described shell steel plate and internal frame adopt pulling rivet to be connected and fixed, described sound-absorbing material is placed between described shell steel plate and described internal frame, is provided with some noise elimination flow deflectors in described housing.
Further, described sound-absorbing material outsourcing one deck sound-absorbing material diaphragm, described sound-absorbing material diaphragm and described sound-absorbing material one are fixed on interior sound-absorbing material protection slab by pulling rivet.
Further, described bend muffler also comprises air inlet, air outlet, and described air inlet is located at a side of described housing, and described air outlet is located at the bottom of described housing, and described absorbent treatment at least covers a side body part relative with described air inlet.
Further, described air inlet is connected with described housing by a side of flange shank connecting plate with described air outlet, and the opposite side of described flange shank connecting plate is fixedly connected with angle steel flange by steel rivet.
The beneficial effect that the utility model reaches is:
(1), sturdy and durable, stable performance;
(2), effectively reduce noise, the noise reduction sound-deadening amount of Soundproofing static pressure box is 8～15dB (A);
(3), plenum chamber can be used to reduce noise, can obtain again uniform static pressure air-out, reduces dynamic pressure loss;
(4), there is good high, medium and low frequency acoustic attenuation performance.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of bend muffler of the utility model;
The left view of Fig. 1 that Fig. 2 is;
Fig. 3 is the partial enlarged drawing of a kind of bend muffler absorbent treatment of the utility model;
Fig. 4 is the partial enlarged drawing of a kind of bend muffler air inlet of the utility model coupling part.
Number in the figure: 1-housing; 2-sound-absorbing material; 3-shell steel plate; Sound-absorbing material protection slab in 4-; 5-air inlet; 6-adpting flange; 7-air outlet; 8-flange connecting hole; 9-internal frame; 10-sound-absorbing material diaphragm; 11-noise elimination flow deflector; 12-pulling rivet; 13-flange shank connecting plate; 14-steel rivet; 15-angle steel flange; 16-flange.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
As Figure 1-Figure 4, a kind of bend muffler of the utility model, comprise housing 1, absorbent treatment, described absorbent treatment is comprised of 9 three layers of shell steel plate 3, sound-absorbing material 2 and internal frames, described shell steel plate 1 adopts pulling rivet to be connected and fixed with internal frame 9, described sound-absorbing material 2 is placed between described shell steel plate 1 and described internal frame 9, is provided with some noise elimination flow deflectors 11 in described housing 1.
Described sound-absorbing material 2 outsourcing one deck sound-absorbing material diaphragms 10, described sound-absorbing material diaphragm 10 is fixed on interior sound-absorbing material protection slab 4 by pulling rivet 11 with described sound-absorbing material 9 one.
Described bend muffler also comprises air inlet 5, air outlet 7, and described air inlet 5 is located at a side of described housing 1, and described air outlet 7 is located at the bottom of described housing 1, and described absorbent treatment at least covers a side body part relative with described air inlet 5.
Described air inlet 5 is connected with described housing 1 by a side of flange shank connecting plate 13 with described air outlet 7, and the opposite side of described flange shank connecting plate 13 is fixedly connected with angle steel flange 15 by steel rivet 14.During use, before boring is fixing, flange shank connecting plate 13 should exceed angle steel flange 15 1 segment length, this length can according to circumstances be set to 5-10mm, after steel rivet 14 is connected and fixed, evenly beat flange 16 with wooden mallet, make described air inlet 5 and described air outlet 7 be fixed on described housing 1.
This equipment, is produced static pressure and reduces wind speed by housing through absorbent treatment, thereby weakening the propagation of fan noise, then by air outlet 7, new wind evenly being sent new wind access housing by air inlet 5.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a bend muffler, comprise housing, absorbent treatment, it is characterized in that: described absorbent treatment is comprised of three layers of shell steel plate, sound-absorbing material and internal frames, described shell steel plate and internal frame adopt pulling rivet to be connected and fixed, described sound-absorbing material is placed between described shell steel plate and described internal frame, is provided with some noise elimination flow deflectors in described housing.
2. a kind of bend muffler according to claim 1, is characterized in that: described sound-absorbing material outsourcing one deck sound-absorbing material diaphragm, described sound-absorbing material diaphragm and described sound-absorbing material one are fixed on interior sound-absorbing material protection slab by pulling rivet.
3. a kind of bend muffler according to claim 1, it is characterized in that: also comprise air inlet, air outlet, described air inlet is located at a side of described housing, and described air outlet is located at the bottom of described housing, and described absorbent treatment at least covers a side body part relative with described air inlet.
4. a kind of bend muffler according to claim 3, it is characterized in that: described air inlet is connected with described housing by a side of flange shank connecting plate with described air outlet, and the opposite side of described flange shank connecting plate is fixedly connected with angle steel flange by steel rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489761.9U CN203571993U (en) | 2013-08-12 | 2013-08-12 | Noise abatement bend muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489761.9U CN203571993U (en) | 2013-08-12 | 2013-08-12 | Noise abatement bend muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203571993U true CN203571993U (en) | 2014-04-30 |
Family
ID=50539722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320489761.9U Expired - Fee Related CN203571993U (en) | 2013-08-12 | 2013-08-12 | Noise abatement bend muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203571993U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014058A (en) * | 2017-04-17 | 2017-08-04 | 盈普声学（惠州）有限公司 | A kind of noise-reduction method of VAV systems and its application |
| CN109367753A (en) * | 2018-07-30 | 2019-02-22 | 沪东中华造船(集团)有限公司 | A kind of ship loading cabin noise elimination wind conduit |
| CN114234424A (en) * | 2021-10-14 | 2022-03-25 | 安徽省建筑设计研究总院股份有限公司 | Air pipe static pressure box with variable arc guide vanes based on dissipation analysis |
-
2013
- 2013-08-12 CN CN201320489761.9U patent/CN203571993U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014058A (en) * | 2017-04-17 | 2017-08-04 | 盈普声学（惠州）有限公司 | A kind of noise-reduction method of VAV systems and its application |
| CN109367753A (en) * | 2018-07-30 | 2019-02-22 | 沪东中华造船(集团)有限公司 | A kind of ship loading cabin noise elimination wind conduit |
| CN114234424A (en) * | 2021-10-14 | 2022-03-25 | 安徽省建筑设计研究总院股份有限公司 | Air pipe static pressure box with variable arc guide vanes based on dissipation analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140430 Termination date: 20180812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |