Title:
冷凍機およびこれに用いるロータリー弁
Document Type and Number:
Japanese Patent JP3584185
Kind Code:
B2
Abstract:
A refrigerator incorporating a rotary valve (A) which comprises a rotary element (1) rotatable about an axis thereof and having a circular cross section perpendicular to the axis, and a housing (2) accommodating the rotary element in a rotatable manner, the rotary element having a plurality of ports (5-12) provided in an outer peripheral portion thereof, the housing having a plurality of ports (17-22) provided in a peripheral wall thereof in association with the ports of the rotary element, the rotary valve being operative to be switched between a position where predetermined ones of the ports of the rotary element are aligned with corresponding ones of the ports of the housing for communication therebetween and a position where the predetermined ones of the ports of the rotary element are displaced in non-alignment with the corresponding ones of the ports of the housing for non-communication therebetween by rotation of the rotary element. Since the valve incorporated in the Gifford-McMahon or pulse tube refrigerator has a smaller size and an extended service, the refrigerator is allowed to have a larger scale, a greater capacity and a higher efficiency.
Inventors:
Shingo Kuniya
Application Number:
JP26751499A
Publication Date:
November 04, 2004
Filing Date:
September 21, 1999
Export Citation:
Assignee:
Air Water Inc.
International Classes:
F25B41/04; F16K11/085; F25B9/14; (IPC1-7): F25B9/14
Domestic Patent References:
| JP59086871A | ||||
| JP8303887A | ||||
| JP9236347A | ||||
| JP62200139A |
Attorney, Agent or Firm:
Masahiko Nishito