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Title:
CENTRIFUGAL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2017/170105
Kind Code:
A1
Abstract:
Provided is a centrifugal compressor (1) which is provided with: a rotational shaft (2) which extends in the axial direction (D); a first impeller (3a); a second impeller (3b) which is provided to the downstream side (D2) of the first impeller (3a); a return flow path (30) which guides, inwards in the radial direction, a first fluid (G1) flowing outwards in the radial direction from the first impeller (3a); an introduction flow path (26) which introduces, into the second impeller (3b), the fluid guided inwards in the radial direction; an intermediate suction flow path (10) which additionally supplies a second fluid (G2) to the second impeller (3b); and a bent flow path (27) which is connected to the downstream side of the introduction flow path (26) and the intermediate suction flow path (10), extends so as to bend towards the downstream side (D2), and guides the first and second fluids to the second impeller (3b). The side surface (26a) of the introduction flow path (26) at the upstream side is provided further towards the downstream side (D2) than the turn-back position (R) of the return flow path (30).

Inventors:
YAMASHITA SHUICHI (JP)
NAKANIWA AKIHIRO (JP)
SAITO RYOSUKE (JP)
TOKUYAMA SHINICHIRO (JP)
Application Number:
PCT/JP2017/011661
Publication Date:
October 05, 2017
Filing Date:
March 23, 2017
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)
International Classes:
F04D29/44; F04D17/12
Foreign References:
JPH04134700U1992-12-15
JPH0979192A1997-03-25
Other References:
See also references of EP 3421815A4
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
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