Title:
REFRIGERATION DEVICE AND METHOD FOR DETERMINING AMOUNT OF REFRIGERANT IN REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/113555
Kind Code:
A1
Abstract:
A refrigeration device (1) is provided with a heat source unit (10) that uses a refrigerant operating in a supercritical region. The heat source unit (10) is provided with: a compression element (20) for compressing a refrigerant; a heat source heat exchanger (24); an expansion valve (26) provided downstream from the heat source heat exchanger (24); a receiver (25) provided downstream from the expansion valve (26); and a control unit (101). Under a first condition in which the internal pressure of the receiver (25) is less than or equal to a supercritical pressure, the control unit (101) carries out a first operation for determining the amount of refrigerant on the basis of a high-pressure pressure.
Inventors:
TAGUCHI SHUICHI (JP)
TAKEGAMI MASAAKI (JP)
TAKEGAMI MASAAKI (JP)
Application Number:
PCT/JP2021/037999
Publication Date:
June 02, 2022
Filing Date:
October 14, 2021
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B43/00; F25B1/00; F25B49/02
Foreign References:
| JP2012117713A | 2012-06-21 | |||
| JP2014102008A | 2014-06-05 | |||
| JP2012117713A | 2012-06-21 |
Other References:
See also references of EP 4227611A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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