CN101705854A - Porous sound eliminator - Google Patents
Porous sound eliminator Download PDFInfo
- Publication number
- CN101705854A CN101705854A CN200910019423A CN200910019423A CN101705854A CN 101705854 A CN101705854 A CN 101705854A CN 200910019423 A CN200910019423 A CN 200910019423A CN 200910019423 A CN200910019423 A CN 200910019423A CN 101705854 A CN101705854 A CN 101705854A
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- CN
- China
- Prior art keywords
- regular polygonal
- polygonal filter
- composite
- sound
- spaces
- 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
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- Exhaust Silencers (AREA)
Abstract
The invention relates to a porous sound eliminator which mainly comprises a composite regular polygonal filter and exhaust pipes, wherein the composite regular polygonal filter is formed by mutually sleeving more than two exhaust pipes in same shapes, and a tail port is a sealed port; the composite regular polygonal filter is circumferentially provided with regular small holes; after being sleeved in the exhaust pipes, the composite regular polygonal filter forms a plurality of baffle plate type sound adsorbing spaces and mixing chambers. When the invention adopting the structure is used, the airflow exhausted by an engine passes through the composite regular polygonal filter, has resistance when passing through the small holes and enters the baffle plate type sound adsorbing spaces after causing pressure drop; the airflow speed is reduced by spreading the pressure drop to reduce a noise value; the spread low-pressure airflow enters the mixing chambers through the sound adsorbing spaces, and the noise is gradually weakened after reflux, thereby achieving the aim of sound elimination.
Description
Technical field
The present invention relates to a kind of porous sound eliminator of the noise that produces when reducing gaseous emission.
Technical background
Because the development of traffic and the increase of Motor Vehicle quantity have formed serious traffic noise pollution source in the city, particularly in the busiest section, noise reaches 70 decibels.Especially in recent years, private car increases, and the traffic noise problem is serious day by day.Night, an automobile of speeding by can wake tens thousand of residents along the street up, seriously disturbed people's normal rest, and then influenced healthy.
Summary of the invention
The present invention is a kind of porous sound eliminator of crossing the principle development that the stagnation pressure after the polygonal room device diffusion of porous and formation reduces according to air communication.
The technological scheme that the present invention takes is as follows:
It mainly contains compound just polygonal wave filter and outlet pipe composition porous sound eliminator.Described compound just polygonal wave filter is to be linked in mutually together by exhaust pipe identical shaped more than two, its end port is closed port, this compound just polygonal wave filter is circumferentially with the aperture of rule, and this compound just polygonal wave filter is sleeved on back formation a plurality of diaphragm types sound absorption space and mixing chamber in the outlet pipe.The invention of employing said structure in use, the air communication that motor is discharged is crossed compound just polygonal wave filter, the air communication small holes has resistance, enter a plurality of dividing plate sound absorptions space after causing pressure drop, make airspeed reduce level of noise through the diffusion pressure drop, through a plurality of sound absorptions space, the low-pressure air current after the diffusion enters mixing chamber, the back noise that refluxes weakens gradually, reaches the purpose of noise elimination.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is compound just polygonal filter construction schematic representation;
Fig. 3 is a cross-sectional structure schematic representation of the present invention;
Embodiment
It mainly contains compound just polygonal wave filter 3 and outlet pipe 1 composition porous sound eliminator.Described compound just polygonal wave filter 3 is to be linked in mutually together by exhaust pipe identical shaped more than two, its end port is closed port, this compound just polygonal wave filter 3 is circumferentially with the aperture 2 of rule, and this compound just polygonal wave filter 3 is sleeved on back formation a plurality of diaphragm types sound absorption space 5 and mixing chamber 4 in the outlet pipe.
Claims (1)
- Porous sound eliminator its mainly contain compound just polygonal wave filter and outlet pipe and form, described compound just polygonal wave filter is characterized in that: it is to be linked in mutually together by exhaust pipe identical shaped more than two, its end port is closed port, this compound just polygonal wave filter is circumferentially with the aperture of rule, and this compound just polygonal wave filter is sleeved on back formation a plurality of diaphragm types sound absorption space and mixing chamber in the outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910019423A CN101705854A (en) | 2009-10-13 | 2009-10-13 | Porous sound eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910019423A CN101705854A (en) | 2009-10-13 | 2009-10-13 | Porous sound eliminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101705854A true CN101705854A (en) | 2010-05-12 |
Family
ID=42376103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910019423A Pending CN101705854A (en) | 2009-10-13 | 2009-10-13 | Porous sound eliminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101705854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412804A (en) * | 2020-10-13 | 2021-02-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Compound air suction port and air exhaust port silencing assembly and compressor |
-
2009
- 2009-10-13 CN CN200910019423A patent/CN101705854A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412804A (en) * | 2020-10-13 | 2021-02-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Compound air suction port and air exhaust port silencing assembly and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100512 |