EXPANSION VALVE DEVICE

An expansion valve device has a housing, a valve body, an actuator, a first, second, and third detectors, and a controller. The housing defines a first refrigerant path and a second refrigerant path therein. The first detector detects a temperature of the refrigerant flowing in the first refrigerant...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MATSUKI Tatsuhiro, ITOU Tetsuya, OOURA Mitsuo
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING RANGES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	An expansion valve device has a housing, a valve body, an actuator, a first, second, and third detectors, and a controller. The housing defines a first refrigerant path and a second refrigerant path therein. The first detector detects a temperature of the refrigerant flowing in the first refrigerant path. The second detector detects a temperature and a pressure of the refrigerant flowing on an upstream side of the valve body in the second refrigerant path. The third detector detects a temperature or a pressure of the refrigerant flowing on a downstream side of the valve body in the second refrigerant path. The controller calculates a flow rate of the refrigerant flowing in the second refrigerant path and a superheating degree of the refrigerant flowing in the first refrigerant path, and controls the opening degree of the valve body such that the superheating degree falls within a specified range.