REFRIGERATING CYCLE DEVICE

PROBLEM TO BE SOLVED: To accurately determine whether a solenoid valve in a hot water supply machine is malfunctioning. SOLUTION: In the hot water supply machine, when the solenoid valve 75 malfunctions, even if a valve opening signal is output from an electronic control device 80, the solenoid valv...

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Bibliographische Detailangaben
Hauptverfasser:	OYA NAOHIRO, TERAO MASAYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To accurately determine whether a solenoid valve in a hot water supply machine is malfunctioning. SOLUTION: In the hot water supply machine, when the solenoid valve 75 malfunctions, even if a valve opening signal is output from an electronic control device 80, the solenoid valve 75 will not open. Thus, refrigerant pressure on a discharge port side of a compressor 10 rises rapidly. The temperature of an air heat exchanger 50 reaches a prescribed temperature T2 or lower. Accordingly, after it has been determined as "NO" in step S123, it is decided as being "YES" in step S124, with the detected pressure P by a sensor 81 being a prescribed pressure P2 or higher. Thereafter, in step S125, it is decided as being "YES", that a detected temperature Te by a sensor 82 is lower than the prescribed temperature T2 (