Multistage centrifugal compressor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8287236
APP PUB NO 20080279680A1
SERIAL NO

12117288

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A multistage centrifugal compressor includes a rotary shaft, and multistage impellers attached to the rotary shaft. Each of the impellers includes a hub, a shroud and blades therebetween in a radial cascade arrangement. An annular suction passage for guiding the fluid flow from the inward radial direction to a blade inlet is disposed upstream of the centrifugal impeller. A diffuser is disposed downstream of the centrifugal impeller. A bend portion is disposed downstream of the diffuser, and a return channel with a guide blade portion is disposed downstream of the bend portion. The annular suction passage at a hub side includes an axial parallel portion.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTDTOKYO JAPAN TOKYO METROPOLIS

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kishibe, Tadaharu Tokyo, JP 12 94
Kobayashi, Hiromi Tokyo, JP 72 661
Kuwano, Tetsuya Tokyo, JP 15 135
Nishida, Hideo Tokyo, JP 30 567
Tanaka, Masanori Tokyo, JP 164 1488
Yagi, Manabu Tokyo, JP 19 206

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