FREEZING SYSTEM USING NON-AZEOTROPIC TYPE MIXED REFRIGERANT

WIPO Patent Application WO/2002/077543

A1

A freezing machine system using a non-azeotropic type mixed refrigerant containing two or more refrigerant components, wherein by means of low temperature working fluid which is present in a circulation passageway extending through a compressor (1), a condenser (2), a throttle valve (4) and an evaporator (5) to return to the compressor and which returns from the evaporator to the compressor, working fluid present in a region extending from the condenser to the throttle valve is cooled by a heat exchanger (10), thereby lowering the temperature and vapor pressure of the refrigerant, thereby further lowering the temperature and pressure in the compression and condensation steps, thereby lowering the freezing machine system working pressure, promoting the condensation and liquefaction of the high vapor pressure, low boiling refrigerant components. Therefore, it is possible to lower the working pressure for the freezing machine system and to easily realize cryogenic temperatures using a high critical pressure, low critical temperature refrigerant as a mixed refrigerant component.

SEINO TOSHIO (JP)

PCT/JP2001/002440

October 03, 2002

March 27, 2001

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DAIREI CO LTD (JP)
SEINO TOSHIO (JP)

C09K5/04; F25B1/00; F25B9/00; F25B40/00; (IPC1-7): F25B1/00

JP2001099498A	2001-04-13
JP2000205676A	2000-07-28
JPH08166172A	1996-06-25
JPH06317358A	1994-11-15
JPH10332212A	1998-12-15
JPH0748562A	1995-02-21
JPH06241589A	1994-08-30
JPH0748563A	1995-02-21
JPH09151370A	1997-06-10

Irimajii, Takao (24 Shinjuku 1-chom, Shinjuku-ku Tokyo, JP)

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