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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING COMPRESSOR CASING, CASING BLANK, AND COMPRESSOR CASING
Document Type and Number:
WIPO Patent Application WO/2019/049497
Kind Code:
A1
Abstract:
The present invention comprises: a blank forming step in which a casing blank (70) is formed by die-casting, the casing blank (70) having a first cylindrical section (41), a second cylindrical section (42), and an annular section (44) which includes a recess (71) recessed toward one side in an axial direction (O) from a first surface (44a) facing the other side in the axial direction (O); and a cutting step in which the inner peripheral surface (42a) of the second cylindrical section (42) and a second surface (44b) of the annular section (44), the second surface (44b) facing the one side in the axial direction (O), are cut to connect the recess (71) to a compression section containing space (42A) within the second cylindrical section (42), thereby forming a flow passage. In the blank forming step, the casing blank (70) is formed such that a part of a side surface (71a) of the recess (71) is disposed radially outside the inner peripheral surface (42a) of the second cylindrical section (42).

Inventors:
YOGO ICHIRO (JP)
HIRANO TAKESHI (JP)
ICHISE YUKI (JP)
Application Number:
JP2018/025533
Publication Date:
March 14, 2019
Filing Date:
July 05, 2018
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F04B39/12; F04C18/02; F04C29/00
Foreign References:
JP5518169B12014-06-11
JPS56118994U1981-09-10
JPS588767U1983-01-20
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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