Title:
冷凍機及び冷凍機の運転方法
Document Type and Number:
Japanese Patent JP6557329
Kind Code:
B2
Abstract:
A refrigerator according to the present invention includes: a cooling part for cooling an object to be cooled through heat exchange with a refrigerant; an expander-integrated compressor including a compressor for compressing the refrigerant and an expander for expanding the refrigerant integrated therein; and a refrigerant circulation line configured to circulate the refrigerant through the compressor, the expander, and the cooling part. The compressor includes a low-stage compressor, a middle-stage compressor, and a high-stage compressor disposed in series in the refrigerant circulation line. The expander-integrated compressor includes: the middle-stage compressor; an expander for adiabatically expanding and cooling the refrigerant discharged from the high-stage compressor; a first motor having an output shaft connected to the middle-stage compressor and to the expander; at least one non-contact type bearing, disposed between the middle-stage compressor and the expander, for supporting the output shaft of the first motor without being in contact with the output shaft; and a casing for housing the middle-stage compressor, the expander, and the at least one non-contact type bearing.
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Inventors:
Ueda Shota
Machida Akito
Kudo Mizuo
Machida Akito
Kudo Mizuo
Application Number:
JP2017516237A
Publication Date:
August 07, 2019
Filing Date:
May 01, 2015
Export Citation:
Assignee:
Maekawa Manufacturing Co., Ltd.
International Classes:
F25B11/02; F01D15/08; F01D25/00; F01D25/16; F01D25/24; F02C1/10; F02C3/045; F02C3/05; F02C7/06; F04B35/00; F04D29/058; F25B1/10; F25B9/06
Domestic Patent References:
| JP2014001916A | ||||
| JP2005098604A | ||||
| JP7091760A | ||||
| JP11211244A | ||||
| JP2010516994A | ||||
| JP2013155972A | ||||
| JP2014126284A | ||||
| JP2014219125A | ||||
| JP11159898A | ||||
| JP2009121786A | ||||
| JP2008536078A | ||||
| JP2009501896A |
Foreign References:
| WO2006011248A1 | ||||
| WO2015068522A1 |
Attorney, Agent or Firm:
Seishin ip patent business corporation