Kältekreislaufvorrichtung, Steuerungsverfahren und Programm

Details

Veröffentlichungs-Nr.

EP4800327

Anmeldetag

23. Dezember 2025

Veröffentlichung

9. Juli 2026

Rechtsraum

EP

IPC

F25B49/02, F24F11/36, F25B1/00

Abstract

A refrigeration cycle apparatus includes: a shut-off valve (26, 43) configured to shut off a flow of a refrigerant from a heat-source-side circuit (20a) to a utilization-side circuit (45) when a refrigerant leakage sensor (70) detects leakage of the refrigerant; and a controller (100) configured to execute a determination action including: a first control to close the shut-off valve (26, 43) or reduce an opening degree of the shut-off valve (26, 43) during operation of a compressor (22); and a second control to determine, after the first control, whether the shut-off valve (26, 43) is abnormal, based on a pressure or temperature of the refrigerant in a refrigerant circuit (10). The controller (100) executes the determination action in response to acquisition of a first signal for setting the utilization unit (40) to a thermo-off state.

Anmelder

Firma

DAIKIN INDUSTRIES, LTD.

Land

🇯🇵 Japan

Fachgebiete