Title:
圧縮機、圧縮機を備えた冷却機器、並びに圧縮機及び冷却機器を動作させるための方法
Document Type and Number:
Japanese Patent JP6594959
Kind Code:
B2
Abstract:
Pulse tube coolers and Gifford-McMahon coolers are used to cool nuclear spin tomographs and cryopumps. To supply cooled working gas, gas compressors and in particular helium compressors are used with rotational or rotary valves. The rate at which compressed helium is introduced into the cooling device and let out again lies in the range of 1 Hz. A problem of conventional screw or piston processors is that oil from the compressor mixes with the working gas and thus contaminates the cooling device. By providing a second compressor stage, a common pump device can be used to pump in both directions, which results in a two-stage compressor device. The working gas is compressed in each flow direction of the working liquid, in one flow direction in the first compressor stage and in the opposite flow direction in the second compressor stage. Thus, the efficiency of the compressor device is improved.
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Inventors:
Hachen Jens
Application Number:
JP2017512337A
Publication Date:
October 23, 2019
Filing Date:
September 08, 2015
Export Citation:
Assignee:
PRESSURE WAVE SYSTEMS GMBH
International Classes:
F04B37/12; F04B45/02; F25B9/00; F25B9/02; F25B9/14
Domestic Patent References:
| JP2011106755A |
Foreign References:
| WO2014016415A2 | ||||
| DE102008060598A1 | ||||
| US20050210889 | ||||
| US2772543 |
Attorney, Agent or Firm:
Meisei International Patent Office