JPH01128000U - - Google Patents

Info

Publication number
JPH01128000U
JPH01128000U JP2384588U JP2384588U JPH01128000U JP H01128000 U JPH01128000 U JP H01128000U JP 2384588 U JP2384588 U JP 2384588U JP 2384588 U JP2384588 U JP 2384588U JP H01128000 U JPH01128000 U JP H01128000U
Authority
JP
Japan
Prior art keywords
fan
speaker
alternator
noise
sound
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
JP2384588U
Other languages
English (en)
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 JP2384588U priority Critical patent/JPH01128000U/ja
Publication of JPH01128000U publication Critical patent/JPH01128000U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例の斜視図、第2図は
上記実施例における音の位相の説明図である。 1……モータ、2……主軸、3……フアン、4
……フアンの翼、5……スピーカー、6……ギア
、7……増速ギア、8……交流発電機、9……ス
リツプリング、10……電線。

Claims (1)

    【実用新案登録請求の範囲】
  1. フアンを駆動する主軸と連結した交流発電機、
    同交流発電機で発生した電流によつてフアンから
    発生する騒音の主要周波数と同一の周波数の音を
    発する前記フアンの翼に貼付けられた高分子圧電
    材料からなるスピーカー、および前記フアンから
    発生する騒音と前記スピーカーから発する音とを
    逆位相にするようチユーニングするチユーニング
    装置を備えたことを特徴とする低騒音フアン装置
JP2384588U 1988-02-26 1988-02-26 Pending JPH01128000U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2384588U JPH01128000U (ja) 1988-02-26 1988-02-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2384588U JPH01128000U (ja) 1988-02-26 1988-02-26

Publications (1)

Publication Number Publication Date
JPH01128000U true JPH01128000U (ja) 1989-08-31

Family

ID=31243181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2384588U Pending JPH01128000U (ja) 1988-02-26 1988-02-26

Country Status (1)

Country Link
JP (1) JPH01128000U (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011236916A (ja) * 2002-03-18 2011-11-24 Sri Internatl 流体を移動させる電気活性ポリマーデバイス
US10408129B1 (en) 2018-03-20 2019-09-10 Kabushiki Kaisha Toshiba Rotor-stator blade interference noise reduction system and flying object
US10510332B2 (en) 2018-03-15 2019-12-17 Kabushiki Kaisha Toshiba Noise reduction apparatus and jet fan
US10559292B2 (en) 2018-03-20 2020-02-11 Kabushiki Kaisha Toshiba Rotor blade noise reduction system, flying object and noise reduction system
US11415152B2 (en) 2019-03-12 2022-08-16 Kabushiki Kaisha Toshiba System for reducing interference noise of rotor and stator blades, and flight vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011236916A (ja) * 2002-03-18 2011-11-24 Sri Internatl 流体を移動させる電気活性ポリマーデバイス
US10510332B2 (en) 2018-03-15 2019-12-17 Kabushiki Kaisha Toshiba Noise reduction apparatus and jet fan
US10408129B1 (en) 2018-03-20 2019-09-10 Kabushiki Kaisha Toshiba Rotor-stator blade interference noise reduction system and flying object
US10559292B2 (en) 2018-03-20 2020-02-11 Kabushiki Kaisha Toshiba Rotor blade noise reduction system, flying object and noise reduction system
US11415152B2 (en) 2019-03-12 2022-08-16 Kabushiki Kaisha Toshiba System for reducing interference noise of rotor and stator blades, and flight vehicle

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