ケーシング幅が二重反転多翼ファンの性能に及ぼす影響(流体工学,流体機械) The Effect of Casing Width on Performance of Sirocco Fan Using Contra-Rotating Rotors(Fluids Engineering)

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A sirocco fan using contra-rotating rotors in which an inner rotor was settled inside the sirocco fan rotor and each rotor rotated in an opposite direction was proposed for the purpose of getting the higher pressure and making the structure of a sirocco fan compact more. If the high discharge pressure is obtained with the adoption of the contra-rotating rotors, it could be used for various purposes. Pressure coefficient of the sirocco fan with contra-rotating rotors was 2.4 times as high as the conventional sirocco fan and the maximum efficiency point of contra-rotating rotors shifted larger flow rate than the conventional sirocco fan. On the other hand, it was clarified from the flow measurement results that the larger back flow region than conventional one occurred at the shroud of the casing in the case of contra-rotating type and this would induce decrease of the efficiecy. In the present paper, the performance of the conventional sirocco fan and the sirocco fan with contra-rotating rotors are shown and the internal flow field at the outlet of the outer rotor of both cases is clarified Then, the effect of casing width on the performance and the internal flow field is investigated and the casing width which would be suitable for the contra-rotating type would be discussed.

収録刊行物

  • 日本機械学会論文集 B編

    日本機械学会論文集 B編 75(760), 2488-2494, 2009

    一般社団法人 日本機械学会

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各種コード

  • NII論文ID(NAID)
    110007503897
  • NII書誌ID(NCID)
    AN00187441
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03875016
  • NDL 記事登録ID
    10548556
  • NDL 雑誌分類
    ZN11(科学技術--機械工学・工業)
  • NDL 請求記号
    Z16-109
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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