Title:
SEMI-HERMETIC MULTISTAGE COMPRESSOR
Document Type and Number:
Japanese Patent JP2004301076
Kind Code:
A
Abstract:
To reduce the load of a motor and prevent application of a large load to a connecting rod in compressing carbon dioxide.
A compression means 4 is formed of a pre-stage compressing part 11a and a post-stage compressing part 11b to compress carbon dioxide. A communicating part 73 is provided to communicate a pre-stage discharge chamber to which a refrigerant compressed by the pre-stage compressing part 11a is discharged with a crank chamber 19 for storing a crank 25. Thus, the pressure in the crank chamber 19 is made substantially equal to the pressure in the pre-stage discharge chamber 52 to reduce the load of the motor 2 and prevent application of a large load to the connecting rod 26 or the like.
Inventors:
KURITA FUMIHIKO
NISHIKAWA HIROSHI
INOUE HIDEYUKI
ITABASHI SHINYA
INOUE TAKASHI
NISHIKAWA TAKEHIRO
HASEGAWA SETSU
KATO TETSUYA
OGASAWARA KOSUKE
SHIOAJI DAIKI
NISHIKAWA HIROSHI
INOUE HIDEYUKI
ITABASHI SHINYA
INOUE TAKASHI
NISHIKAWA TAKEHIRO
HASEGAWA SETSU
KATO TETSUYA
OGASAWARA KOSUKE
SHIOAJI DAIKI
Application Number:
JP2003096891A
Publication Date:
October 28, 2004
Filing Date:
March 31, 2003
Export Citation:
Assignee:
SANYO ELECTRIC CO
International Classes:
F04B39/12; F04B37/12; (IPC1-7): F04B39/12; F04B37/12
Attorney, Agent or Firm:
Makoto Monda
Terumi Hemi
Terumi Hemi