CN2032662U - Airstream muffler - Google Patents
Airstream muffler Download PDFInfo
- Publication number
- CN2032662U CN2032662U CN 88204461 CN88204461U CN2032662U CN 2032662 U CN2032662 U CN 2032662U CN 88204461 CN88204461 CN 88204461 CN 88204461 U CN88204461 U CN 88204461U CN 2032662 U CN2032662 U CN 2032662U
- Authority
- CN
- China
- Prior art keywords
- bore
- central
- airflow
- wall
- stream core
- 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.)
- Withdrawn
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Abstract
The utility model relates to an airstream muffler, especially suitable for sound attenuation of the airstream of a blower fan, composed of a stream scatter core and a connection device. The stream scatter core is a curved-surface body with a center through hole. Outline is a convex bend face. An air intake end to an air exhaust end of the lateral direction section of the center through hole is decreased gradually. Whistler when the airstream passes by the stream scatter core is greatly weakened and noise is greatly decreased.
Description
A kind of airflow muffler is specially adapted to the noise elimination of fan airflow, can be applicable to industry and civilian various blower fans.
The howling that air-flow causes is one of noise source of befouling environment, and this howling gets farther than mechanical vibration propagation of sound.The silencing apparatus that adopts in prior art, because the effect of its sound-absorbing, sound insulation can make mechanical noise weaken, but air-flow is uttered long and high-pitched sounds and still can be passed peripherad environment.
The purpose of this utility model provides a kind of airflow muffler, can eliminate the howling of air-flow.
The utility model adopts dredges the technological scheme that the stream core is eliminated the noise.Form by dredging stream core and connection set.Dredge and flow core is installed in airflow duct by connection set outlet.Dredge the curved surface that the stream core is a band central through bore, its external frame is a convex surface, the lateral cross section of central through bore, and its inlet end to outlet side reduces gradually.Dredge between stream outer core and the central through bore wall can be entity also can be hollow, if hollow, it is better that its hollow area is put full sound absorbing material effect.Its central through bore can be interior convex or spill smooth surface, also can be cone-shaped.
In when work, the air-flow of being discharged by the blower fan outlet because the variation of ventilating section changes the flow velocity of air-flow and direction, thereby greatly weakens the howling of air-flow during through the thin stream core of this airflow muffler, and the noise of blower fan greatly reduces.
Embodiment: as shown in drawings: dredge stream core (1) and be fixed on the connecting sleeve (3) by connecting plate (2), connecting sleeve (3) is fixed on the flow outlet (5), the outer wall (6) of dredging the stream core is the spirogyrate curve, the central through bore wall (7) of dredging the stream core is interior convex or concave curvatures, the built-in full sound absorbing material of hollow area between the inside and outside wall (8).Dredging the axial position of stream core (1) in airflow line outlet (5) can adjust, and it is fixing to adjust back screw (4).
Claims (7)
1, a kind of airflow muffler is formed by dredging stream core and connection set, dredges the stream core and is fixed in the connection set, it is characterized in that:
(1), dredge the curved surface that the stream core is a band central through bore,
(2), the external frame of dredging the stream core is convex surface,
(3), the lateral cross section of central through bore, its inlet end to outlet side reduces gradually.
2, airflow muffler according to claim 1 is characterized in that, is entity between the outer wall of thin stream core and the central through bore wall.
3, airflow muffler according to claim 1 is characterized in that, is hollow between the outer wall of thin stream core and the central through bore wall.
4, airflow muffler according to claim 3 is characterized in that, dredges the outer wall of stream core and the hollow area between the central through bore wall and puts full sound absorbing material.
According to claim 1 or 2 or 3 or 4 described airflow mufflers, it is characterized in that 5, described central through bore is interior convex smooth surface.
6, according to claim 1 or 2 or 3 or 4 described airflow mufflers, it is characterized in that described central through bore is the inner concave shape smooth surface.
7, according to claim 1 or 2 or 3 or 4 described airflow mufflers, it is characterized in that tapered of described central through bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88204461 CN2032662U (en) | 1988-04-07 | 1988-04-07 | Airstream muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88204461 CN2032662U (en) | 1988-04-07 | 1988-04-07 | Airstream muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2032662U true CN2032662U (en) | 1989-02-15 |
Family
ID=4839058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88204461 Withdrawn CN2032662U (en) | 1988-04-07 | 1988-04-07 | Airstream muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2032662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235390A (en) * | 2010-05-07 | 2011-11-09 | 曼柴油机和涡轮机欧洲股份公司 | Muffler for turbine compressor and method for laying muffler |
-
1988
- 1988-04-07 CN CN 88204461 patent/CN2032662U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235390A (en) * | 2010-05-07 | 2011-11-09 | 曼柴油机和涡轮机欧洲股份公司 | Muffler for turbine compressor and method for laying muffler |
| CN102235390B (en) * | 2010-05-07 | 2015-07-22 | 曼柴油机和涡轮机欧洲股份公司 | Muffler for turbine compressor and method for laying muffler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |