OPERATION CONTROLLING METHOD FOR REFRIGERATING CYCLE

PURPOSE:To prevent reverse rotation sound and vibration by preventing reverse rotation of a compressor at the time of stopping the compressor. CONSTITUTION:When a stop command is output to a compressor 1, a fan of a condenser 2 is stopped. A discharge side pressure and a suction side pressure of the...

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Bibliographische Detailangaben
Hauptverfasser:	SUZUKI KAZUHIRO, TOMIMASU KAZUHIRO
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:	PURPOSE:To prevent reverse rotation sound and vibration by preventing reverse rotation of a compressor at the time of stopping the compressor. CONSTITUTION:When a stop command is output to a compressor 1, a fan of a condenser 2 is stopped. A discharge side pressure and a suction side pressure of the compressor 1 and number of revolutions of the compressor are input in this state. When a differential pressure between the input side pressure and the output side pressure is a specified value or more, the compressor 1 is stopped as it is. When the differential pressure is smaller than the specified value and the number of revolutions is larger than a set value, a motor operated expansion valve is closed. Or when the differential pressure is smaller than the value and the number of revolutions is smaller than the set value, the number of revolutions of the compressor is increased, and the compressor 1 is stopped after a specified time.