Title:
REFRIGERANT LEAKAGE DETERMINATION DEVICE, CONTROL DEVICE, REFRIGERANT LEAKAGE DETERMINATION PROGRAM, AND REFRIGERANT LEAKAGE DETERMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/249387
Kind Code:
A1
Abstract:
A refrigerant leakage determination device (300) comprises a refrigeration cycle device (100), a connection device (105A, 105B), and a control device (200). The refrigeration cycle device (100) is configured from an indoor unit (100A) and an outdoor unit (100B). The refrigeration cycle device (100) has a refrigerant circuit (120) and performs a refrigeration cycle in which a refrigerant circulates through the refrigerant circuit (120). The connection device (105A, 105B) has a communication port that communicates with the internal space of the refrigerant circuit (120), and is connected to a pressure sensor (104) that measures the refrigerant pressure in the internal space. The control device (200) causes the refrigeration cycle device (100) to perform oil recovery operation to collect oil in the refrigerant circuit (120) to a compressor (109), and determines refrigerant leakage from the refrigerant circuit (120) by comparing a reference pressure with the refrigerant pressure measured by the pressure sensor (104) after the oil recovery operation.
Inventors:
ONO YUSEI (JP)
OCHIAI YASUTAKA (JP)
HAMADA MAMORU (JP)
OCHIAI YASUTAKA (JP)
HAMADA MAMORU (JP)
Application Number:
PCT/JP2021/020162
Publication Date:
December 01, 2022
Filing Date:
May 27, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B49/02; F25B1/00
Foreign References:
| JP2007163107A | 2007-06-28 | |||
| JPH04225769A | 1992-08-14 | |||
| JP2002213847A | 2002-07-31 | |||
| JP2009243719A | 2009-10-22 | |||
| JPH07332806A | 1995-12-22 | |||
| JPH04225769A | 1992-08-14 |
Attorney, Agent or Firm:
CROSS-BORDER PATENT FIRM (JP)
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