Title:
REFRIGERANT CHARGING DEVICE
Document Type and Number:
Japanese Patent JP2021011960
Kind Code:
A
Abstract:
To provide an inexpensive and reliable refrigerant charging device by improving a charging speed and reducing costs while preventing liquid-back.SOLUTION: The refrigerant charging device includes: a refrigerant charging circuit having a refrigerant charging port connected to a refrigerant circuit of an air conditioner; an opening/closing valve provided at the refrigerant charging circuit; and a control mechanism to control the opening/closing valve. The control mechanism includes: a discharge superheat degree calculation unit to calculate the refrigerant discharge superheat degree from a refrigerant temperature and a refrigerant pressure at a discharge side of a compressor; and a valve control unit configured to control the opening/closing state of the opening/closing valve based on the calculated discharge superheat degree calculated by the discharge superheat degree calculation unit.SELECTED DRAWING: Figure 3
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Inventors:
NAKAGAWA TADAHIRO
EGUCHI HIROAKI
TAKAHASHI MASATOSHI
EGUCHI HIROAKI
TAKAHASHI MASATOSHI
Application Number:
JP2019124975A
Publication Date:
February 04, 2021
Filing Date:
July 04, 2019
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD
International Classes:
F25B45/00
Domestic Patent References:
| JP2008298335A | 2008-12-11 | |||
| JP2007198642A | 2007-08-09 | |||
| JP2005114184A | 2005-04-28 | |||
| JPH09329375A | 1997-12-22 | |||
| JPS59101176U | 1984-07-07 | |||
| JPS5367144A | 1978-06-15 |
Foreign References:
| WO2008018373A1 | 2008-02-14 |
Attorney, Agent or Firm:
Ryuhei Nishimura
Saito Shindai
Uemura Yoshinaga
Atsushi Nakamura
Maeda Haruko
Saito Shindai
Uemura Yoshinaga
Atsushi Nakamura
Maeda Haruko