Title:
REFRIGERATING DEVICE, AND REFRIGERANT AMOUNT DETERMINATION METHOD OF REFRIGERATING DEVICE
Document Type and Number:
Japanese Patent JP2022083237
Kind Code:
A
Abstract:
To provide a refrigerating device and a refrigerant amount determination method of the refrigerating device capable of accurately determining excess/deficiency of a refrigerant amount in the refrigerating device using a refrigerant acting in a supercritical region.SOLUTION: A refrigerating device 1 includes a heat source unit 10 using a refrigerant acting in a supercritical region. The heat source unit includes: a compression element 20 for compressing a refrigerant; a heat source heat exchanger 24; an expansion valve 26 disposed at a downstream side of the heat source heat exchanger; a receiver 25 disposed at a downstream side of the expansion valve; and a control portion 101. The control portion performs a first operation for determining a refrigerant amount on the basis of a high pressure in a first condition that an internal pressure of the receiver is a supercritical pressure or less.SELECTED DRAWING: Figure 8
Inventors:
TAGUCHI SHUICHI
TAKEGAMI MASAAKI
TAKEGAMI MASAAKI
Application Number:
JP2020194568A
Publication Date:
June 03, 2022
Filing Date:
November 24, 2020
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B49/02
Domestic Patent References:
| JP2012117713A | 2012-06-21 | |||
| JP2014102008A | 2014-06-05 |
Attorney, Agent or Firm:
Maeda patent office