Title:
REFRIGERATOR
Document Type and Number:
Japanese Patent JP3928230
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a refrigerator comprising centrifugal compressor and turbine in which the maintenance period is prolonged while generating a high output by employing a refrigerant gas produced by mixing helium and a gas having higher molecular weight than helium and inert in the atmosphere.
SOLUTION: In a refrigerator comprising a motor 4 disposed between an upper compressor 2 and a lower turbine 3, one stage of centrifugal blade 12 is fixed to the upper end of a vertical shaft 8 intruding into a casing 11. A gas 13 introduced from an upper inlet 11a into the casing 11 is compressed rotation of the blade 12 and fed from a side outlet 11b through a cooler 17 and a heat exchanger 18 to a turbine 3. The gas 13 is circulated to the compressor 2 after temperature thereof is increased by the heat exchanger 18. A mixture gas of helium and a gas (e.g. neon, argon) having higher molecular weight than helium and inert in the atmosphere is employed as time gas 13.
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Inventors:
Saji Yoshiyoshi
Yukio Kaneko
Kei Asakura
Seiichiro Yoshinaga
Yukio Kaneko
Kei Asakura
Seiichiro Yoshinaga
Application Number:
JP33036097A
Publication Date:
June 13, 2007
Filing Date:
December 01, 1997
Export Citation:
Assignee:
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
F25B9/00; F25B9/06; (IPC1-7): F25B9/00; F25B9/06
Domestic Patent References:
| JP2263063A | ||||
| JP59081461A | ||||
| JP9296963A | ||||
| JP8159633A | ||||
| JP58069365A |
Attorney, Agent or Firm:
Tsunemitsu Yamada
Seiichi Otsuka
Seiichi Otsuka
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