CN202544964U - Silencer - Google Patents
Silencer Download PDFInfo
- Publication number
- CN202544964U CN202544964U CN2012201644572U CN201220164457U CN202544964U CN 202544964 U CN202544964 U CN 202544964U CN 2012201644572 U CN2012201644572 U CN 2012201644572U CN 201220164457 U CN201220164457 U CN 201220164457U CN 202544964 U CN202544964 U CN 202544964U
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- CN
- China
- Prior art keywords
- outlet
- air
- holes
- inlet
- folded plate
- 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
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Abstract
The utility model discloses a silencer with a good silencing effect. The silencer comprises a shell, wherein the shell is cylindrical and is provided with an inlet and an outlet, wherein the inlet and the outlet are opposite, the shell is internally and fixedly provided with a zigzag perforated folded plate which is provided with through holes, and the diameter of an end face with the through holes facing the inlet is more than that of the end face with the through holes facing the outlet. When air enters the silencer through the inlet, firstly, air skims over a space with a decreasing variable cross section among the perforated folded plate to generate resonance and sound absorption effects, and changes of the cross section are about to produce a noise reduction effect on a wider frequency spectral band; then, the air passes through the through holes in the perforated folded plate, and the pulsation energy of the air is reduced further; two and more strands of air jet flows which are opposite obliquely and pass through the through holes are collided obliquely and mixed, so that sound waves are mutually interfered to be attenuated; and the mixed air flow skims over the space with an increasing variable cross section among the perforated folded plate to generate resonance and sound absorption effects again; and finally, the air flow flows out from the outlet.
Description
Technical field
The utility model relates to a kind of silencer, relates in particular to a kind of baffler.
Background technique
Baffler is a kind of a kind of device that stops sound transmission but allow air communication to cross.Present baffler generally has several kinds of resistive baffler, resonance silencer, absorbing sound type baffler or its combinations etc., the characteristics of its each tool oneself, but the noise elimination effect is all bad.
The model utility content
The utility model provides a kind of effective baffler of eliminating the noise to not enough.
The technological scheme that the utility model solves the problems of the technologies described above is following:
A kind of baffler comprises housing, and housing is a tubular article; Housing has import and outlet; Import and outlet are oppositely arranged, and it is characterized in that, the housing internal fixation is equipped with the perforation flap that " it " font is provided with; Perforation has through hole on the flap, through hole towards the end face diameter of suction side greater than the end face diameter of through hole towards outlet side.
The beneficial effect of the utility model is:
When gas is got into the utility model by import after, at first skim over the space between the perforation flap of descending variable cross section, produce resonance and sound absorption effect, the variation meeting in cross section produces the noise reduction effect to the wider frequency bands of a spectrum; Then gas passes the through hole on the perforation flap, and the pulsation energy of air can further descend; Two strands and will produce inclined impact and mixing with the relative gas jet of passing behind the through hole that tilts, sound wave interference and decaying each other; Mixed air-flow skims over the space between the perforation flap of ascending variable cross section, produces resonance and sound absorption effect once more; Last air-flow is flowed out by outlet.Owing to when air flow stream is crossed the utility model, can produce multiple de-noising effect, it is effective to eliminate the noise.
Description of drawings
Fig. 1 is the structural representation of the utility model.
In the accompanying drawing:
1, housing; 2, import; 3, perforation flap; 4, outlet; 5, through hole.
Embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
A kind of baffler, as shown in Figure 1, comprise housing 1; Housing 1 is a tubular article; Housing 1 has import 2 and outlet 4, and import 2 is oppositely arranged with outlet 4, and housing 1 internal fixation is equipped with the perforation flap 3 that " it " font is provided with; Perforation has through hole 5 on the flap 3, through hole 5 towards the end face diameter of import 2 sides greater than the end face diameter of through hole 5 towards outlet 4 sides.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
The utility model noise elimination frequency spectrum is extensive, sound deadening capacity is big, resistance is little, in light weight, size is little, manufacturing is easy, with low cost.
Two adjacent perforation flaps become certain included angle to tilt relatively in the utility model; According to parameters such as sound deadening capacity, noise frequency, sectional wind velocity, resistances; On the perforation flap, have the hole of definite shape, aperture and density (percent opening), the turnover angle of perforation flap and length are also according to the above-mentioned parameter decision, for further improving sound deadening capacity; The perforation flap can be processed into the shape with certain projection or pit, available a plurality of perforation flap serial or parallel connections.
The utility model can produce multiple noise elimination effect in less space, and spectral range is wider; Volume is little, and sound deadening capacity is big, and is with low cost, makes simple; Do not play dirt, be prone to clean, thermal adaptability is wide, and is corrosion-resistant; Resistance is less, can be adaptable across various places.
Claims (1)
1. a baffler comprises housing (1), and housing (1) is a tubular article; Housing (1) has import (2) and outlet (4); Import (2) is oppositely arranged with outlet (4), it is characterized in that, housing (1) internal fixation is equipped with the perforation flap (3) that " it " font is provided with; Have through hole (5) in perforation flap (3), through hole (5) towards the end face diameter of import (2) side greater than the end face diameter of through hole (5) towards outlet (4) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201644572U CN202544964U (en) | 2012-04-18 | 2012-04-18 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201644572U CN202544964U (en) | 2012-04-18 | 2012-04-18 | Silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202544964U true CN202544964U (en) | 2012-11-21 |
Family
ID=47165614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201644572U Expired - Fee Related CN202544964U (en) | 2012-04-18 | 2012-04-18 | Silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202544964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410637B (en) * | 2013-08-11 | 2016-01-20 | 中国人民解放军重庆通信学院 | A kind of intake noise reduction structure of mute power generator group |
| CN106884696A (en) * | 2017-04-06 | 2017-06-23 | 桐乡市洲泉振兴五金塑料制品厂 | A kind of silencing net of noise eliminator of motorcycle |
| CN109405243A (en) * | 2018-09-25 | 2019-03-01 | 珠海格力电器股份有限公司 | Exhaust apparatus and its electrical equipment |
-
2012
- 2012-04-18 CN CN2012201644572U patent/CN202544964U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410637B (en) * | 2013-08-11 | 2016-01-20 | 中国人民解放军重庆通信学院 | A kind of intake noise reduction structure of mute power generator group |
| CN106884696A (en) * | 2017-04-06 | 2017-06-23 | 桐乡市洲泉振兴五金塑料制品厂 | A kind of silencing net of noise eliminator of motorcycle |
| CN109405243A (en) * | 2018-09-25 | 2019-03-01 | 珠海格力电器股份有限公司 | Exhaust apparatus and its electrical equipment |
| CN109405243B (en) * | 2018-09-25 | 2024-01-12 | 珠海格力电器股份有限公司 | Air outlet device and electrical equipment thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20130418 |