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Patent Searching and Data


Title:
SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2017/042653
Kind Code:
A1
Abstract:
A screw compressor (100), provided with: an electric motor (4); a screw rotor sharing an axis of the electric motor (4), and being driven by the electric motor (4); a casing accommodating the electric motor (4) and the screw rotor, and comprising: gas channels (4a, 4b), arranged along a portion of the outer circumference of the electric motor (4) on one side with respect to a specific virtual plane which includes the axis, so that gas leads to the screw rotor side from the opposite side of the screw rotor with respect to the electric motor (4); a protruding portion (30), arranged at a position facing the electric motor (4) on one side with respect to a virtual plane of an inner wall face of the casing and on a downstream side of the gas channels (4a, 4b), and protruding from the inner wall face; a suction port (6), arranged within the casing on one side with respect to a virtual plane and downstream of the protruding portion (30), and guiding gas passing through the electric motor (4) to the screw rotor. The screw compressor (100) prevents the temperature of portions of a coil from rising, increasing the reliability of the screw compressor.

Inventors:
IWAI SATOSHI (JP)
YONEMOTO RYUICHIRO (JP)
NAKAYA EITA (JP)
KATOU EISUKE (JP)
Application Number:
PCT/IB2016/054997
Publication Date:
March 16, 2017
Filing Date:
August 22, 2016
Export Citation:
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Assignee:
JOHNSON CONTROLS-HITACHI AIR CONDITIONING TECH (HONG KONG) LTD (CN)
International Classes:
F04C18/16; F04C29/04; F04C29/12
Foreign References:
JP2013167211A2013-08-29
US20020146332A12002-10-10
DE4033154C11992-01-09
CN201874822U2011-06-22
CN204025046U2014-12-17
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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