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Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
Japanese Patent JP3863555
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To avoid the constraint that the density ratio is constant as much as possible, and to obtain high power recovering effect in a wide operation range.
SOLUTION: This refrigeration cycle device uses carbon dioxide as a refrigerant and has a compressor, an outdoor heat exchanger, an expander and an indoor heat exchanger. The refrigeration cycle device is provided with an injection circuit for introducing a high pressure refrigerant in a halfway of an expansion process of the expander.


Inventors:
Yoshikazu Kawabe
Kazuo Nakatani
Yuji Inoue
Noriho Okaza
Akira Tsuda
Application Number:
JP2006108132A
Publication Date:
December 27, 2006
Filing Date:
April 10, 2006
Export Citation:
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Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
F25B1/00; F25B11/02; F25B13/00
Domestic Patent References:
JP2001116371A
Attorney, Agent or Firm:
Yoshihiro Shimizu
Shinichi Abe
Yuji Tsujida