Title:
MULTISTAGE COMPRESSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/067195
Kind Code:
A1
Abstract:
In a refrigeration device using a plurality of multistage compressors, it has been necessary to keep refrigerating machine oil at an appropriate amount in each of the compressors. A multistage compression system (20) has a low-stage compressor (21), a high-stage compressor (23), an oil returning tube (31), and an oil discharge tube (32). The low-stage compressor (21) has a compression part (50), a motor (40), and a container (30). The container (30) houses the compression part (50) and the motor (40). The oil returning tube (31) and the oil discharge tube (32) are connected to the container (30).
Inventors:
OKAMOTO DAISUKE
KAJIWARA MIKIO
NISHIDE YOHEI
TOMIOKA NAOTO
ADACHI MASAAKI
OHNISHI YOUSUKE
UENO AKITOSHI
HORITA TAKUYA
TAKEGAMI MASAAKI
KAJIWARA MIKIO
NISHIDE YOHEI
TOMIOKA NAOTO
ADACHI MASAAKI
OHNISHI YOUSUKE
UENO AKITOSHI
HORITA TAKUYA
TAKEGAMI MASAAKI
Application Number:
PCT/JP2019/037670
Publication Date:
April 02, 2020
Filing Date:
September 25, 2019
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B1/00; F04B39/00; F04C23/00; F04C29/02; F25B1/10
Foreign References:
| JP2008261227A | 2008-10-30 | |||
| JP2009079820A | 2009-04-16 | |||
| JP2008175066A | 2008-07-31 | |||
| JP2015034536A | 2015-02-19 | |||
| JP2008261227A | 2008-10-30 | |||
| JP5375534B2 | 2013-12-25 |
Other References:
See also references of EP 3835685A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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