Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/250952
Kind Code:
A1
Abstract:
In the present invention, a refrigerant cycle system (100) comprises: a primary side cycle (20) that circulates a first refrigerant; a secondary side cycle (40) that circulates a second refrigerant; and a cascade heat exchanger (35) that performs heat exchange between the first refrigerant and the second refrigerant. The primary side cycle (20) has primary side communication piping. The secondary side cycle (40) has secondary side communication piping. The primary side communication piping has primary side gas communication piping (22) and primary side fluid communication piping (21). The secondary side communication piping has secondary side gas communication piping (42) and secondary side fluid communication piping (41). The pipe diameter of the secondary side gas communication piping (42) is smaller than the pipe diameter of the primary side gas communication piping (22) or the pipe diameter of the secondary side fluid communication piping (41) is smaller than the pipe diameter of the primary side fluid communication piping (21).
Inventors:
YAMADA TAKURO
KUMAKURA EIJI
YOSHIMI ATSUSHI
IWATA IKUHIRO
MINAMIDA TOMOATSU
KUMAKURA EIJI
YOSHIMI ATSUSHI
IWATA IKUHIRO
MINAMIDA TOMOATSU
Application Number:
PCT/JP2020/022922
Publication Date:
December 17, 2020
Filing Date:
June 10, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B7/00; F25B1/00; F25B41/00
Domestic Patent References:
| WO2013146103A1 | 2013-10-03 | |||
| WO2014038028A1 | 2014-03-13 | |||
| WO2020004108A1 | 2020-01-02 |
Foreign References:
| JPS6146859A | 1986-03-07 | |||
| JP2006125762A | 2006-05-18 | |||
| JP2008209105A | 2008-09-11 | |||
| JP2009126300A | 2009-06-11 | |||
| JP2012087978A | 2012-05-10 | |||
| JP2014074508A | 2014-04-24 |
Other References:
See also references of EP 3978831A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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