FREEZING DEVICE - DAIKIN IND LTD

Title:

FREEZING DEVICE

Document Type and Number:

WIPO Patent Application WO/2006/004047

Kind Code:

A1

Abstract:

An outdoor heat exchanger (23), an indoor heat exchanger (24), a compression/expansion unit (30), etc. are connected to a refrigerant circuit (20). In the compression/expansion unit (30) are provided a compression mechanism section (50), an electric motor (45), and an expansion mechanism section (60). In the refrigerant circuit (20) is provided an injection piping (26). When an injection valve (27) is opened, a portion of a high-pressure refrigerant after heat radiation flows into the injection piping (26) and introduced into an expansion chamber (66) in an expansion process of the expansion mechanism section (60). In the expansion mechanism section (60), power is recovered from both a high-pressure refrigerant introduced from an inlet port (34) into the expansion chamber (66) and a high-pressure refrigerant introduced from the injection piping (26) into the expansion chamber (66).

Inventors:

SAKITANI KATSUMI (JP)
MORIWAKI MICHIO (JP)
INOKUCHI YUME (JP)
SASAKI YOSHINARI (JP)

Application Number:

PCT/JP2005/012219

Publication Date:

January 12, 2006

Filing Date:

July 01, 2005

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
SAKITANI KATSUMI (JP)
MORIWAKI MICHIO (JP)
INOKUCHI YUME (JP)
SASAKI YOSHINARI (JP)

International Classes:

F25B1/00; F25B1/10; F25B11/02; (IPC1-7): F25B1/00; F25B1/10; F25B11/02

Foreign References:

JP2004150748A	2004-05-27
JP2004108683A	2004-04-08
JP2004060989A	2004-02-26

Other References: