CENTRIFUGAL COMPRESSOR - MITSUBISHI HEAVY IND LTD

Title:

CENTRIFUGAL COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/2015/001644

Kind Code:

A1

Abstract:

[Problem] To enlarge the operation range of a centrifugal compressor by improving the surge margin, while reducing circulation resistance of the intake air flowing through the intake passage to avoid reduction in the choke flow. [Solution] This centrifugal compressor is characterized by being provided with a compressor housing (15), an impeller wheel (7) which compresses the intake air inside of the compressor housing (15), a parallel flow generating means (51) which rectifies the intake air flowing in from an intake port (23) to be parallel with a rotation shaft (9), and a recirculation flow path (41) which returns part of the intake air in the outer peripheral portion of the impeller wheel (7) to upstream of the impeller wheel (7). The parallel flow generating means (51) comprises a parallel flow generating unit (52) configured from a guide vane (55), and a central intake air circulation area (59) which is a space surrounded by the parallel flow generating unit (52). The intake air flows out from an upstream opening (45) towards the parallel flow generating unit (52).

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Inventors:

AN BYEONGIL (JP)
SUZUKI HIROSHI (JP)

Application Number:

PCT/JP2013/068374

Publication Date:

January 08, 2015

Filing Date:

July 04, 2013

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)

International Classes:

F04D29/44; F04D29/66

Foreign References:

JP2006002650A	2006-01-05
JP2003106299A	2003-04-09
JP2009209694A	2009-09-17
JP2010270641A	2010-12-02
JP2004332733A	2004-11-25
JP2004332733A	2004-11-25
JP2010270641A	2010-12-02

Other References: