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Title:
MULTI-STAGE TYPE COMPRESSOR
Document Type and Number:
Japanese Patent JP2015148155
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a multi-stage type compressor which suppresses dew condensation occurring at an intermediate part without deteriorating compression efficiency in starting.SOLUTION: A multi-stage type compressor includes: a low pressure side compression part for sucking fluid from the outside and compressing it; a high pressure side compression part for sucking the fluid compressed in the low pressure side compression part and compressing it; an intermediate part disposed between the low pressure side compression part and the high pressure side compression part and supplying the fluid from the low pressure side compression part to the high pressure side compression part; and a control part for controlling operation of the low pressure side compression part and the high pressure side compression part. The control part controls a compression body so as to raise a surface temperature of the intermediate part to be raised earlier in starting than in normal operation.

Inventors:
YONEYAMA KOJI
MIHASHI HIROSHI
NARUSAWA NOBUYUKI
Application Number:
JP2014019925A
Publication Date:
August 20, 2015
Filing Date:
February 05, 2014
Export Citation:
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Assignee:
HITACHI IND EQUIPMENT SYS
International Classes:
F04B49/02; F04B39/06; F04B41/06; F04B49/10
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki