Title:
AIR CONDITIONER
Document Type and Number:
Japanese Patent JP2020201011
Kind Code:
A
Abstract:
To enable a refrigeration machine oil flowing out from a compressor to be returned to the compressor easily.SOLUTION: A refrigerant cycle system 100 includes: a primary side cycle 20 which circulates a first refrigerant; a secondary side cycle 40 which circulates a second refrigerant; and a cascade heat exchanger 35 which conducts heat exchange between the first refrigerant and the second refrigerant. The primary side cycle 20 has a primary side communication pipeline. The secondary side cycle 40 has a secondary side communication pipeline. The primary side communication pipeline has a primary side gas communication pipeline 22 and a primary side liquid communication pipeline 21. The secondary side communication pipeline has a secondary side gas communication pipeline 42 and a secondary side liquid communication pipeline 41. A pipe diameter of the secondary side gas communication pipeline 42 is smaller than a pipe diameter of the primary side gas communication pipeline 22 or a pipe diameter of the secondary side liquid communication pipeline 41 is smaller than a pipe diameter of the primary side liquid communication pipeline 21.SELECTED DRAWING: Figure 1
Inventors:
YAMADA TAKUO
KUMAKURA EIJI
YOSHIMI ATSUSHI
IWATA YASUHIRO
MINAMIDA TOMOATSU
KUMAKURA EIJI
YOSHIMI ATSUSHI
IWATA YASUHIRO
MINAMIDA TOMOATSU
Application Number:
JP2019109592A
Publication Date:
December 17, 2020
Filing Date:
June 12, 2019
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B7/00; F25B1/00
Domestic Patent References:
| JPS6146859A | 1986-03-07 | |||
| JP2006125762A | 2006-05-18 | |||
| JP2008209105A | 2008-09-11 | |||
| JP2009126300A | 2009-06-11 | |||
| JP2012087978A | 2012-05-10 |
Foreign References:
| WO2013146103A1 | 2013-10-03 | |||
| WO2014038028A1 | 2014-03-13 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation