Title:
ULTRALOW TEMPERATURE REFRIGERATOR, REFRIGERATING SYSTEM, AND VACUUM APPARATUS
Document Type and Number:
WIPO Patent Application WO/2005/066554
Kind Code:
A1
Abstract:
An ultralow temperature refrigerator (R) using a mixed refrigerant containing a plurality of kinds of refrigerants having different boiling points. The refrigerator (R) comprises a main refrigerant circuit (38) provided with a criocoil (32) and a capillary tube (29) and a sub-refrigerant circuit (39) the upstream end of which is branched and connected to the upstream end of the main refrigerant circuit (38) and which is provided with a capillary tube (28). In order to ensure the flow of the liquid refrigerant for a supercooler (31) and to enhance the cooling eficiiency of the criocoil (32), the height of the sub-refrigerant circuit (39) is less than the height of the main refrigerant circuit (38). The flow of the refrigerant in a gas-liquid mixed state discharged from the primary side (31a) of the supercooler (31) and flowing into the sub-refrigerant circuit (39) is greater than the flow into the main refrigerant circuit (38), so that the flow of the liquid refrigerant into the sub-refrigerant circuit (39) is increased more than the flow into the main refrigerant circuit (38).
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Inventors:
TAKAHASHI MASAYUKI (JP)
YAGI MASAFUMI (JP)
SHIMIZU HIROMASA (JP)
TOMOZAWA AKIRA (JP)
IKEDA MASAHIKO (JP)
SHIONO MASAHITO (JP)
YAGI MASAFUMI (JP)
SHIMIZU HIROMASA (JP)
TOMOZAWA AKIRA (JP)
IKEDA MASAHIKO (JP)
SHIONO MASAHITO (JP)
Application Number:
PCT/JP2005/000024
Publication Date:
July 21, 2005
Filing Date:
January 05, 2005
Export Citation:
Assignee:
SHINMAYWA IND LTD (JP)
TAKAHASHI MASAYUKI (JP)
YAGI MASAFUMI (JP)
SHIMIZU HIROMASA (JP)
TOMOZAWA AKIRA (JP)
IKEDA MASAHIKO (JP)
SHIONO MASAHITO (JP)
TAKAHASHI MASAYUKI (JP)
YAGI MASAFUMI (JP)
SHIMIZU HIROMASA (JP)
TOMOZAWA AKIRA (JP)
IKEDA MASAHIKO (JP)
SHIONO MASAHITO (JP)
International Classes:
F25B9/00; (IPC1-7): F25B7/00
Foreign References:
| JPH0583668U | 1993-11-12 | |||
| JP2000179968A | 2000-06-30 | |||
| JPH03191269A | 1991-08-21 | |||
| JPH06347112A | 1994-12-20 | |||
| JPH07103587A | 1995-04-18 | |||
| JPH06159831A | 1994-06-07 | |||
| JPH01116369U | 1989-08-04 | |||
| JPH09145179A | 1997-06-06 | |||
| JPH06159817A | 1994-06-07 |
Attorney, Agent or Firm:
Maeda, Hiroshi (5-7 Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, JP)
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