Title:
COLD STORAGE TYPE FREEZER AND EVACUATION METHOD
Document Type and Number:
Japanese Patent JP3944861
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cold storage type freezer suitable to a cryo-pump capable of efficient gas condensation and regenerating treatment.
SOLUTION: A displacer reciprocating along the axis of a cylinder is arranged within the cylinder opened at one end. The inner surface of a cooling stage air-tightly connected to the one end of the cylinder is exposed to the space within the cylinder. A refrigerant gas passage communicates with a cooling cavity partitioned by the cylinder, the displacer, and the cooling stage to introduce the refrigerant gas to the cooling cavity or recover the refrigerant gas from the cooling cavity. A cold storage agent is arranged in the refrigerant gas passage and performs heat exchange with the refrigerant gas carried in the refrigerant gas passage. A heat resistant member composed of a material lower in heat conductivity than the cooling stage is mounted on the cooling stage. A cooling panel arranged to surround the circumference of the cooling stage without contacting with the cooling stage is mounted on the heat resistant member.
Inventors:
Hiroshi Asami
Application Number:
JP2005080204A
Publication Date:
July 18, 2007
Filing Date:
March 18, 2005
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
F25B9/00; (IPC1-7): F25B9/00
Domestic Patent References:
| JP58002379U | ||||
| JP7139464A | ||||
| JP8004652A | ||||
| JP5172055A | ||||
| JP5340622A | ||||
| JP8005177A | ||||
| JP62045382U | ||||
| JP7139828A |
Attorney, Agent or Firm:
Keishiro Takahashi
Mikio Kuruyama
Mikio Kuruyama
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