REFRIGERANT SUPERCOOLING CIRCUIT - YANMAR DIESEL ENGINE CO

Title:

REFRIGERANT SUPERCOOLING CIRCUIT

Document Type and Number:

WIPO Patent Application WO/2000/049346

Kind Code:

A1

Abstract:

A refrigerant supercooling circuit comprising a receiver (5) for retention of a liquid-phase refrigerant installed in a refrigerant line (23) connecting a first expansion valve (45) and a plurality of second expansion valves (71), an extraction line (61) for taking out the liquid-phase refrigerant in the receiver (5), a third expansion valve (62) in the extraction line, the portion of the extraction line (61) downstream of the third expansion valve (62) being passed through the receiver (5) or through a supercooling tank (63), the arrangement being such that the degree of opening of the first expansion valve (45) is controlled either according to the refrigerant pressure (P1) on a refrigerant line (20) connecting the delivery side of a compressor (2) and a four-way valve (3), or according to the degree of supercooling (SC) in the outlet of an outdoor heat exchanger (4), or according to the pressure difference across the first expansion valve (45).

Inventors:

FUKUDOME JIROU (JP)
MINAMI KEN-ICHI (JP)
INOUE MASAKI (JP)
IMURA TAKEO (JP)
OTA YOSHIKAZU (JP)
INAYOSHI KAZUTOSHI (JP)
SUGIMORI KEIJI (JP)

Application Number:

PCT/JP1999/004326

Publication Date:

August 24, 2000

Filing Date:

August 09, 1999

Export Citation:

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Assignee:

YANMAR DIESEL ENGINE CO (JP)
FUKUDOME JIROU (JP)
MINAMI KEN ICHI (JP)
INOUE MASAKI (JP)
IMURA TAKEO (JP)
OTA YOSHIKAZU (JP)
INAYOSHI KAZUTOSHI (JP)
SUGIMORI KEIJI (JP)

International Classes:

F25B13/00; F25B5/02; F25B27/00; F25B40/02; (IPC1-7): F25B13/00; F25B1/00; F25B5/00

Foreign References:

JPH10288407A	1998-10-27
JPH03134445A	1991-06-07
JPH0719641A	1995-01-20
JPH04324067A	1992-11-13
JPH074779A	1995-01-10
JPH0510618A	1993-01-19

Other References: