偏心した吸込ノズルをもつ多翼ファンの性能に関する研究

• 福富 純一郎

• 桑内 忠昭

• 板橋 明吉

• 中瀬 敬之

• 桑田 尚宏

書誌事項

タイトル別名

• A Study of Sirocco Fan with Eccentric Inlet Nozzle.
• ヘンシン シタ スイコミ ノズル オ モツ タヨク ファン ノ セイノウ ニ カンスル ケンキュウ

抄録

This paper describes the performance of a sirocco fan with eccentric inlet nozzle. The effects of the eccentric position of the inlet nozzle on the pressure coefficient and internal flow of the fan are experimentally investigated for two kinds of impeller. It is found that, in case that the eccentric position is located far upstream of scroll exit, the pressure coefficient is considerably higher than that without eccentricity. In this eccentric fan a circulating flow through shroud clearance from the impeller outlet to inlet is formed. As the circulating flow blocks the suction flow entering into impeller inlet, the effective flow region of the cascade is narrowed. Therefore the flow velocity through the cascades increases and the work done by it increases, so the total pressure of the fan increases. As some fluid in the scroll circulates through shroud clearance, the remaining fluid, which flows into an exit duct, suddenly expands. Therefore a large static pressure recovery is obtained in the scroll.

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 65 (634), 2023-2029, 1999

  一般社団法人 日本機械学会

キーワード

• Fluid Machinery

詳細情報

• CRID: 1390282681160550400
• NII論文ID: 110002395457
• NII論文ID: 130004080186
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.65.2023
• ISSN: 18848346
• ISSN: 03875016
• NDL書誌ID: 4777277
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4777277
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/65/634/65_634_2023/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可