JPH02139212U - - Google Patents
Info
- Publication number
- JPH02139212U JPH02139212U JP4834089U JP4834089U JPH02139212U JP H02139212 U JPH02139212 U JP H02139212U JP 4834089 U JP4834089 U JP 4834089U JP 4834089 U JP4834089 U JP 4834089U JP H02139212 U JPH02139212 U JP H02139212U
- Authority
- JP
- Japan
- Prior art keywords
- wedge
- shaped sound
- sound absorbers
- shaped
- absorbers
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4834089U JPH02139212U (fr) | 1989-04-25 | 1989-04-25 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4834089U JPH02139212U (fr) | 1989-04-25 | 1989-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02139212U true JPH02139212U (fr) | 1990-11-21 |
Family
ID=31565058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4834089U Pending JPH02139212U (fr) | 1989-04-25 | 1989-04-25 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02139212U (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0538698U (ja) * | 1991-10-23 | 1993-05-25 | 防衛庁技術研究本部長 | 水中吸音くさび |
WO2009130891A1 (fr) * | 2008-04-22 | 2009-10-29 | 広東松下環境系統有限公司 | Ventilateur centrifuge et procédé de réduction de bruit de ventilateur centrifuge |
-
1989
- 1989-04-25 JP JP4834089U patent/JPH02139212U/ja active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0538698U (ja) * | 1991-10-23 | 1993-05-25 | 防衛庁技術研究本部長 | 水中吸音くさび |
WO2009130891A1 (fr) * | 2008-04-22 | 2009-10-29 | 広東松下環境系統有限公司 | Ventilateur centrifuge et procédé de réduction de bruit de ventilateur centrifuge |
JP2009264121A (ja) * | 2008-04-22 | 2009-11-12 | Panasonic Corp | 遠心送風機および遠心送風機の騒音低減方法 |
CN101965461A (zh) * | 2008-04-22 | 2011-02-02 | 广东松下环境系统有限公司 | 离心鼓风机及离心鼓风机的噪声降低方法 |