Title:
HEAT SOURCE UNIT AND AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/071140
Kind Code:
A1
Abstract:
Proposed is a heat source unit for an air conditioning device that suppresses the occurrence of pressure abnormalities in a refrigerant flow path caused by a filled carbon dioxide refrigerant becoming supercritical. This heat source unit is connected to a usage unit and constitutes an air conditioning device. The heat source unit comprises a compressor, a heat source heat exchanger, a first closing valve, a second closing valve, a refrigerant flow path, and a refrigerant. The refrigerant flow path is a flow path in which the compressor, the heat source heat exchanger, the first closing valve, and the second closing valve are connected by refrigerant piping. The refrigerant is filled into the refrigerant flow path. The refrigerant is carbon dioxide. The fill amount V1 (kg) of the refrigerant filled into the refrigerant flow path, the volume V2 (L) of the refrigerant flow path, and the design pressure P (MPa) of the refrigerant flow path satisfy the following relationships. V1×a≤V2≤V1×b, a=0.078×P2-2.111×P+15.771, b=0.055×P2-1.768×P+16.144
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Inventors:
ANDOU HIROKI
AZUMA SHOTA
MATSUOKA HIROMUNE
ITOU SEISUKE
AZUMA SHOTA
MATSUOKA HIROMUNE
ITOU SEISUKE
Application Number:
PCT/JP2023/035004
Publication Date:
April 04, 2024
Filing Date:
September 26, 2023
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B45/00; F24F1/46; F25B1/00; F25B13/00; F25B41/40; F25B43/00
Domestic Patent References:
| WO2018062485A1 | 2018-04-05 |
Foreign References:
| JP2009243882A | 2009-10-22 | |||
| JP2009139012A | 2009-06-25 | |||
| JP2001082814A | 2001-03-30 |
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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