Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1996-04-05
1997-06-17
Kilner, Christopher
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
F25B 900
Patent
active
056386850
ABSTRACT:
Superconducting magnet and regenerative refrigerator can be reduced in size of the apparatus and is capable of reducing the evaporating amount of liquid helium. A coil portion second thermal shield 17a and a coil portion thermal shield 8a are disposed so as to enclose a coil portion helium tank 2a which contains superconducting coil 1. Further, a helium portion second thermal shield 17b and a helium reservoir portion thermal shield 8b are disposed so as to enclose a helium reservoir tank 2b which stores liquid helium 3. A coil portion second thermal shield 17a and a coil portion thermal shield 8a are cooled by a coil portion 2-stage type Gifford-McMahon cycle refrigerator 50a while a helium portion second thermal shield 17b and a helium reservoir portion thermal shield 8b are cooled by a helium reservoir portion 2-stage type Gifford-McMahon cycle refrigerator 50b.
REFERENCES:
patent: 4277949 (1981-07-01), Longsworth
patent: 4510771 (1985-04-01), Matsuda et al.
patent: 5150578 (1992-09-01), Oota et al.
patent: 5154063 (1992-10-01), Nagao et al.
patent: 5381666 (1995-01-01), Saho et al.
Amano Toshiyuki
Inaguchi Takashi
Kawaguchi Takeo
Kodera Itsuo
Ohara Akinori
Kilner Christopher
Mitsubishi Denki & Kabushiki Kaisha
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