Cryogenic cooling apparatus

Patent · Tue Feb 21 04:00:00 EST 1984

OSTI ID:6672888

Matsuda, T; Kasai, K; Kikkawa, S; Matumoto, K; Saho, N

A split type cryogenic cooling apparatus comprising a refrigerator which permits a working gas of a high pressure and an operating temperature to generate cold heat, a cryostat accommodating a vessel containing liquefied fraction of the working gas together with an object to be cooled and a plurality of shield plates surrounding the vessel and maintained at respective temperature levels, and a communicating pipe system providing a communication between the refrigerator and the cryostat and having a vacuum heat insulation. Two or more stages of heat exchangers are disposed in the cryostat with their colder ends held in thermal contact with the shield plates and the vessel of temperature levels corresponding to the shield plates, thereby suppressing an introduction of external heat into the cryostat.

• Assignee: Hitachi, Ltd. (Japan)
• Patent Number(s): US 4432216
• OSTI ID: 6672888
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONTAINERS
CONTROL EQUIPMENT
CRYOGENICS
CRYOSTATS
DESIGN
ELEMENTS
ENERGY TRANSFER
EQUIPMENT
FLUIDS
GASES
HEAT EXCHANGERS
HEAT TRANSFER
HELIUM
MACHINERY
MECHANICAL VIBRATIONS
NOISE
NONMETALS
PRESSURE VESSELS
RARE GASES
REFRIGERANTS
REFRIGERATING MACHINERY
REFRIGERATORS
SHIELDS
THERMAL SHIELDS
THERMOSTATS
WORKING FLUIDS