VERY LOW TEMPERATURE REFRIGERATING DEVICE

Title:

VERY LOW TEMPERATURE REFRIGERATING DEVICE

Document Type and Number:

Japanese Patent JP2003336923

Kind Code:

A

Abstract:

To provide a very low temperature refrigerating device capable of performing a highly efficient operation according to the variation of a refrigerating load.

This very low temperature refrigerating device comprises a shield plate 16 for stopping the entry of a radiant heat into a superconducting magnet 90, a helium refrigerator 20 generating liquid helium and having a pre-cooling refrigerator 30 pre-cooling helium gas, and a nitrogen refrigerator 40 cooling nitrogen in a nitrogen tank 15. When a vehicle is running, a low stage side compressor 21 and a high stage side compressor 22 are driven to operate the helium refrigerator 20 and the nitrogen refrigerator 40. When the vehicle is stopped, the operation of the pre-cooling refrigerator 30 of the helium refrigerator 20 is stopped, and the operation of the nitrogen refrigerator 40 is continued.

Inventors:

KUSADA SHIGEHISA
MOTOYOSHI SATOYUKI
SANADA YOSHINAO
TOMIOKA KEIJI

Application Number:

JP2002144654A

Publication Date:

November 28, 2003

Filing Date:

May 20, 2002

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TOKAI RYOKAKU TETSUDO KK
TOSHIBA CORP
DAIKIN IND LTD

International Classes:

F25B9/00; F25B9/10; F25B1/10; F25B9/02; F25B9/14; F25B25/00; F25D3/10; (IPC1-7): F25B9/00

Attorney, Agent or Firm:

Hiroshi Maeda (7 outside)

Previous Patent: VERY LOW TEMPERATURE REFRIGERATOR

Next Patent: DEFROSTING DEVICE OF ABSORPTION REFRIGERATING MACHINE AND ABSORPTION HEAT PUMP