Title:
HIGH-RELIABILITY LOW-TEMPERATURE REFRIGERATING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/232918
Kind Code:
A1
Abstract:
A high-reliability low-temperature refrigerating machine, comprising a compressor (1), a cover assembly (2), an air distribution valve (6), a rotating valve (7), a motor (12), a cylinder (13), and an annular groove (23), a low pressure air discharge hole (24) in communication with the annular groove (23) being disposed on the cover assembly (2) at the position of the annular groove (23), and the outlet end of the low pressure air discharge hole (24) being connected to the low pressure side of the compressor by means of a low pressure air suction pipeline (1b); a low pressure channel (73) capable of communicating with the annular groove (23) is arranged on the rotating valve (7), the other end of the low pressure channel (73) being in communication with a low pressure groove (71) on the rotating valve (7), and powder produced by the relative movement of the rotating valve (7) and the air distribution valve (6) being carried away by low pressure return air and being directly discharged by means of the low pressure air discharge hole (24).
Inventors:
LI AO (CN)
GE JINHONG (CN)
YIN CHENGHOU (CN)
XU ZHEZHEN (CN)
GE JINHONG (CN)
YIN CHENGHOU (CN)
XU ZHEZHEN (CN)
Application Number:
PCT/CN2018/099430
Publication Date:
December 12, 2019
Filing Date:
August 08, 2018
Export Citation:
Assignee:
CSIC PRIDE NANJING CRYOGENIC TECH CO LTD (CN)
International Classes:
F25B9/14; F25B41/20
Foreign References:
| CN101012980A | 2007-08-08 | |||
| CN103968591A | 2014-08-06 | |||
| JP2016057025A | 2016-04-21 | |||
| JP2001241796A | 2001-09-07 |
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. (CN)
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