Title:
CENTRIFUGAL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2019/240479
Kind Code:
A1
Abstract:
A centrifugal compressor comprises: a motor having a rotational shaft; a first volute casing having a first inlet, a first volute, and a gas chamber separated from the first volute and the first inlet; a first impeller connected to one side of the rotational shaft and rotatably accommodated inside the first volute casing; a diffuser forming a diffuser path after an outlet of the first impeller and having a plurality of airfoil vanes provided to be spaced apart in the diffuser path; a second volute casing having an outlet, a second volute, and a second inlet through which a fluid flowing from the first volute is introduced; and a second impeller connected to the other side of the rotational shaft and rotatably accommodated inside the second volute casing, wherein at least one of the first volute casing and the diffuser has a gas adjustment path for allowing the gas chamber and the diffuser path to be in communication with each other, and a gas outlet of the gas adjustment path faces at least one of an annular first area in which the plurality of airfoil vanes are located, and a second area between the first area and the rear end of the diffuser path.
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Inventors:
KIM JINSUNG (KR)
KIM KYUYOUNG (KR)
HAN HYUNWOOK (KR)
KIM KYUYOUNG (KR)
HAN HYUNWOOK (KR)
Application Number:
PCT/KR2019/007034
Publication Date:
December 19, 2019
Filing Date:
June 11, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
F04D29/44; F04D29/66
Foreign References:
| KR100356506B1 | 2002-10-18 | |||
| US20080232952A1 | 2008-09-25 | |||
| KR20150046181A | 2015-04-29 | |||
| CN107664143A | 2018-02-06 | |||
| JPH09119396A | 1997-05-06 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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