Title:
COLD ACCUMULATOR
Document Type and Number:
Japanese Patent JP3293446
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase a freezing capability of a cold accumulator and provide a light weight compact-sized cold heat accumulator.
SOLUTION: Balls 34 of holmium steel (HoCu2) having a higher specific heat than that of erbium 3 nickel (Er3Ni) are filled in a final layer 33c showing 10°K or less in a second displacer 33. In addition, balls 35 of erbium 3 nickel (Er3Ni), erbium cobalt (Er3Co) or neodymium (Nd) are filled in an intermediate layer 33d with 10 to 15°K. Further, balls 36 of lead (Pb) are filled in an initial layer 33e with 15°K or more. In this way, some cold accumulating materials showing the highest specific heat in response to each of temperature regions of 10°K or less, 10 to 15°K and 15°K or more, respectively are filled to increase a freezing capability of the second displacer 33 more than that of filling balls of erbium 3 nickel (Er3Ni) in the final layer as found in the prior art. Subsequent to this operation, the second displacer 33 is made light in weight and compact in size.
Inventors:
Hiroyuki Morishita
Hirotoshi Torii
Hirotoshi Torii
Application Number:
JP3401896A
Publication Date:
June 17, 2002
Filing Date:
February 21, 1996
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F25B9/00; F25B9/14; (IPC1-7): F25B9/00; F25B9/14
Domestic Patent References:
| JP1203852A | ||||
| JP3174486A | ||||
| JP4186802A | ||||
| JP399162A |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)