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
Application number
JP4834089U
Other languages
English (en)
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4834089U priority Critical patent/JPH02139212U/ja
Publication of JPH02139212U publication Critical patent/JPH02139212U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
JP4834089U 1989-04-25 1989-04-25 Pending JPH02139212U (US20030204162A1-20031030-M00001.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4834089U JPH02139212U (US20030204162A1-20031030-M00001.png) 1989-04-25 1989-04-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4834089U JPH02139212U (US20030204162A1-20031030-M00001.png) 1989-04-25 1989-04-25

Publications (1)

Publication Number Publication Date
JPH02139212U true JPH02139212U (US20030204162A1-20031030-M00001.png) 1990-11-21

Family

ID=31565058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4834089U Pending JPH02139212U (US20030204162A1-20031030-M00001.png) 1989-04-25 1989-04-25

Country Status (1)

Country Link
JP (1) JPH02139212U (US20030204162A1-20031030-M00001.png)

Cited By (2)

* Cited by examiner, † Cited by third party
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 (ja) * 2008-04-22 2009-10-29 広東松下環境系統有限公司 遠心送風機および遠心送風機の騒音低減方法

Cited By (4)

* Cited by examiner, † Cited by third party
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 (ja) * 2008-04-22 2009-10-29 広東松下環境系統有限公司 遠心送風機および遠心送風機の騒音低減方法
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

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