Refrigeration cycle apparatus

A refrigeration cycle apparatus includes a refrigerant circuit, a high-side pressure sensor, an outside air temperature sensor, an outdoor fan, a fan driving unit, and a controller. The controller includes a pressure prediction unit that predicts, based on a high-side pressure detected by the high-s...

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Bibliographische Detailangaben
1. Verfasser:	Morimoto, Kota
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS RANGES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING REGULATING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	A refrigeration cycle apparatus includes a refrigerant circuit, a high-side pressure sensor, an outside air temperature sensor, an outdoor fan, a fan driving unit, and a controller. The controller includes a pressure prediction unit that predicts, based on a high-side pressure detected by the high-side pressure sensor, a predicted value of high-side pressure at the elapse of a set time, a fan rotation speed control unit that, during cooling operation in which an indoor heat exchanger acts as an evaporator, adjusts the rotation speed of the fan driving unit based on the outside air temperature detected by the outside air temperature sensor and the operating capacity of an indoor unit, and an intermittent fan control unit that, if the fan driving unit is running at a set lower limit rotation speed, and if the high-side pressure is below a target value, controls the fan driving unit to perform intermittent operation, the intermittent operation being performed by setting an ON time and an OFF time such that the predicted value predicted by the pressure prediction unit approaches the target value.