The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 08, 2020

Filed:

Feb. 09, 2016
Applicant:

Mitsubishi Heavy Industries Compressor Corporation, Tokyo, JP;

Inventors:

Naoto Yonemura, Hiroshima, JP;

Daisuke Hirata, Hiroshima, JP;

Hirotaka Higashimori, Nagasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/04 (2006.01); F01D 9/02 (2006.01); F01D 25/30 (2006.01); F02C 1/04 (2006.01); F02K 1/40 (2006.01); F01D 1/08 (2006.01);
U.S. Cl.
CPC ...
F01D 25/04 (2013.01); F01D 1/08 (2013.01); F01D 9/02 (2013.01); F01D 25/30 (2013.01); F02C 1/04 (2013.01); F02K 1/40 (2013.01); F05D 2220/30 (2013.01); F05D 2240/12 (2013.01); F05D 2240/128 (2013.01); F05D 2240/24 (2013.01); F05D 2260/96 (2013.01);
Abstract

A gas expander includes: a casing where a swirl chamber for a gas to be expanded is formed; a turbine wheel that is housed in the casing and rotationally driven by the expanded gas; a diffuser that is mounted to the casing in a direction of a rotating shaft of the turbine wheel and includes a flow path for the expanded gas to flow in the direction of the rotating shaft; a swirl stopper that is disposed in the diffuser, faces a downstream front end surface of a boss of the turbine wheel that faces the flow path, and includes a closed swirl stopping surface that is disposed to face the downstream front end surface of the boss with a gap between the closed swirl stopping surface and the downstream front end surface; and a swirl preventing plate that circumferentially partition the flow path in the diffuser.


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