CN108895036A - Muffler - Google Patents
Muffler Download PDFInfo
- Publication number
- CN108895036A CN108895036A CN201810902370.2A CN201810902370A CN108895036A CN 108895036 A CN108895036 A CN 108895036A CN 201810902370 A CN201810902370 A CN 201810902370A CN 108895036 A CN108895036 A CN 108895036A
- Authority
- CN
- China
- Prior art keywords
- muffler
- sound
- wall
- cone
- absorbing material
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Exhaust Silencers (AREA)
Abstract
The present invention relates to a kind of mufflers, have muffler ontology；The muffler ontology has muffler inner wall, muffler outer wall and the third sound-absorbing material for being filled in the muffler inner wall and the muffler outer wall；The muffler inner wall is equipped with current divider and sound attenuation；The current divider is cone shape, has nose cone and cone shell, and the first sound-absorbing material is filled in the nose cone, is equipped with the first sound-absorbing aperture on the outside of the cone shell；The sound attenuation is ellipsoid, has shell, bracket, and the case surface is equipped with the second sound-absorbing aperture, and inside is equipped with the second sound-absorbing material.Present invention is primarily aimed at solving the problems, such as that erasure effect is bad, allows air-flow to first pass through inner wall absorption after muffler ontology of entering, then reflect air-flow via current divider and slow down, absorbed using sound-absorbing shell and inner wall, noise reduction is achieved the purpose that with this.
Description
Technical field
The present invention relates to blower noise reduction technology field more particularly to a kind of mufflers.
Background technique
Blower is habit abbreviation of the China to gas compression and gas conveying machinery, is improved by the mechanical energy of input
Gas pressure is supplied gas the machinery of body side by side.
Nowadays, blower is widely used in the ventilation of factory, mine, tunnel, cooling tower, vehicle, ship and building, row
Dirt and cooling；The ventilation of boiler and industrial furnace and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；
It the drying of cereal and selects and recommends；Inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..
But blower can generate sizable noise during running at high speed, and the normal work of noise jamming people and stop
Breath.Panoramic muffler is also provided in society thus, but effect is not too ideal.
Summary of the invention
The object of the present invention is to provide a kind of mufflers that can significantly reduce fan noise.
Realizing the technical solution of the object of the invention is：A kind of muffler has muffler ontology；The muffler ontology tool
There are muffler inner wall, muffler outer wall and the third sound absorber for being filled in the muffler inner wall and the muffler outer wall
Material；The muffler inner wall is equipped with current divider and sound attenuation；The current divider is cone shape, has nose cone and Conical Shells With
Body, the nose cone is interior to be filled with the first sound-absorbing material, is equipped with the first sound-absorbing aperture on the outside of the cone shell；The noise reduction shell
Body is ellipsoid, has shell, bracket, and the case surface is equipped with the second sound-absorbing aperture, and inside is equipped with the second sound-absorbing material.
First sound-absorbing material, the second sound-absorbing material described in above-mentioned technical proposal and third sound-absorbing material are ultra-fine fibre glass
Cotton.
The middle position of the current divider is arranged in nose cone described in above-mentioned technical proposal, and the nose cone cross section is small
One facing towards air inlet direction.
Cone shell cross section is small described in above-mentioned technical proposal one side connects the nose cone, the big one side in cross section with
The muffler inner diameter is identical, and is welded at the one third to half of the muffler inner wall from lower to upper.
Shell intermediate symmetry described in above-mentioned technical proposal is set there are two bracket, and the bracket is welded in the muffler
Wall.
Muffler ontology described in above-mentioned technical proposal is cylinder, and the muffler inner wall forms cylindrical cavity, cavity
Lower part is air inlet, and cavity top is gas outlet.
Air inlet described in above-mentioned technical proposal is additionally provided with removable filter net, the filter screen diameter and the muffler
Inner diameter is identical.
After adopting the above technical scheme, the present invention have the effect of it is following positive：
(1) present invention is primarily aimed at solving the problems, such as that erasure effect is bad, allow air-flow after muffler ontology of entering
Inner wall absorption is first passed through, then air-flow is reflected via current divider and is slowed down, is absorbed using sound-absorbing shell and inner wall, is reached with this
To the purpose of noise reduction.
(2) air inlet of the present invention uses removable filter net, and the dust impurity that filtering blower comes out extends internal sound-absorbing
The service life of material.When filter screen is using that can clean or replace after long, economize on resources and cost.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the structural diagram of the present invention；
In figure：1- air inlet, 2- filter screen, 3- current divider, 31- nose cone, 32- cone shell, the first sound-absorbing of 33- are small
Hole, the first sound-absorbing material of 34-, 4- sound attenuation, 41- shell, the second sound-absorbing of 42- aperture, 43- bracket, the second sound absorber of 44-
Material, 5- muffler ontology, 51- muffler inner wall, 52- third sound-absorbing material, 53- muffler outer wall, the gas outlet 6-.
Specific embodiment
(embodiment 1)
See Fig. 1, the present invention has a kind of muffler, has muffler ontology 5；The muffler ontology 5 has muffler
Inner wall 51, muffler outer wall 53 and the third sound-absorbing material for being filled in the muffler inner wall 51 and the muffler outer wall 53
52；The muffler inner wall is equipped with current divider 3 and sound attenuation 4；The current divider 3 is cone shape, has 31 He of nose cone
Cone shell 32, the nose cone 31 is interior to be filled with the first sound-absorbing material 34, is equipped with the first sound-absorbing on the outside of the cone shell 32
Aperture 33；The sound attenuation 4 is ellipsoid, has shell 41, bracket 43, and the case surface is equipped with the second sound-absorbing aperture
42, inside is equipped with the second sound-absorbing material 44.
First sound-absorbing material 34, the second sound-absorbing material 44 and third sound-absorbing material 52 are ultra-fine fibre glass cotton.
The nose cone 31 is arranged in the middle position of the current divider 3, and 31 cross section of nose cone is small one to be faced
To air inlet direction.
The small one side in 32 cross section of cone shell connects the nose cone 31, the big one side in cross section and the noise reduction
51 diameter of device inner wall is identical, and is welded at the one third to half of the muffler inner wall 51 from lower to upper.
41 intermediate symmetry of shell is set there are two bracket 43, and the bracket 43 is welded in the muffler inner wall 51.
The muffler ontology is cylinder, and the muffler inner wall forms cylindrical cavity, and cavity lower part is air inlet
1, cavity top is gas outlet 6.
The air inlet is additionally provided with removable filter net 2,2 diameter of filter screen and the muffler inner diameter phase
Together.
The operation principle of the present invention is that：In use, the gas of blower discharge first passes through detachably product of the present invention
Filter screen 2 is filtered, and wherein dust and impurities will be filtered.Air-flow can pass through third sound absorber after filter screen 2
Expect the 52, first sound-absorbing material 34 and the first sound-absorbing aperture 33, at this moment pneumatic noise flow velocity after superrefraction absorbs reduces, decibel drop
It is low.After pneumatic noise passes through current divider 3, further by third sound-absorbing material 52, the second sound-absorbing material 44 and the second sound-absorbing aperture
42 absorb, and achieve the purpose that noise reduction with this.
In use for some time, after dust and impurities are relatively more on filter screen 2, cleaning and more can be removed
It changes, to extend the service life of internal sound-absorbing material.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of muffler has muffler ontology；It is characterized in that：The muffler ontology has muffler inner wall, noise reduction
Device outer wall and the third sound-absorbing material for being filled in the muffler inner wall and the muffler outer wall；The muffler inner wall is set
There are current divider and sound attenuation；The current divider is cone shape, has nose cone and cone shell, filling in the nose cone
There is the first sound-absorbing material, is equipped with the first sound-absorbing aperture on the outside of the cone shell；The sound attenuation is ellipsoid, is had outer
Shell, bracket, the case surface are equipped with the second sound-absorbing aperture, and inside is equipped with the second sound-absorbing material.
2. muffler according to claim 1, it is characterised in that：First sound-absorbing material, the second sound-absorbing material and
Three sound-absorbing materials are ultra-fine fibre glass cotton.
3. muffler according to claim 1, it is characterised in that：The interposition of the current divider is arranged in the nose cone
Set, the nose cone cross section it is small one facing towards air inlet direction.
4. muffler according to claim 3, it is characterised in that：Described in the small one side connection in the cone shell cross section
Nose cone, the big one side in cross section is identical as the muffler inner diameter, and is welded on the muffler inner wall from lower to upper
One third to half at.
5. muffler according to claim 1, it is characterised in that：The shell intermediate symmetry is set there are two bracket, described
Bracket is welded in the muffler inner wall.
6. muffler according to claim 1, it is characterised in that：The muffler ontology is cylinder, the muffler
Inner wall forms cylindrical cavity, and cavity lower part is air inlet, and cavity top is gas outlet.
7. muffler according to claim 6, it is characterised in that：The air inlet is additionally provided with removable filter net, institute
It is identical as the muffler inner diameter to state filter screen diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902370.2A CN108895036A (en) | 2018-08-09 | 2018-08-09 | Muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902370.2A CN108895036A (en) | 2018-08-09 | 2018-08-09 | Muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895036A true CN108895036A (en) | 2018-11-27 |
Family
ID=64353701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810902370.2A Pending CN108895036A (en) | 2018-08-09 | 2018-08-09 | Muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895036A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946670A (en) * | 2020-08-11 | 2020-11-17 | 绍兴华放新材料有限公司 | T-shaped resistance micropore multi-combination exhaust silencer |
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
-
2018
- 2018-08-09 CN CN201810902370.2A patent/CN108895036A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946670A (en) * | 2020-08-11 | 2020-11-17 | 绍兴华放新材料有限公司 | T-shaped resistance micropore multi-combination exhaust silencer |
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
| CN116213364B (en) * | 2023-05-11 | 2023-07-21 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181127 |
|
| WD01 | Invention patent application deemed withdrawn after publication |