POWER ELEMENT AND EXPANSION VALVE USED THEREIN

Provided are an expansion valve and power element used therein that are capable of maintaining sealability while reducing the size of the expansion valve and suppressing deterioration of controllability. The expansion valve comprises a valve main body; a power element mounted on the valve main body;...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OKUTSU, Kinya, KUBOTA, Kouhei, HAYAKAWA, Junya
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBINED HEATING AND REFRIGERATION SYSTEMS CYLINDERS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING PISTONS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING SEALINGS TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	Provided are an expansion valve and power element used therein that are capable of maintaining sealability while reducing the size of the expansion valve and suppressing deterioration of controllability. The expansion valve comprises a valve main body; a power element mounted on the valve main body; and a seal provided between the valve main body and the power element, wherein: the power element includes: an upper lid member; a receiving member; and a diaphragm interposed between the upper lid member and the receiving member, the receiving member is formed by press working, and includes a cylindrical portion and an annular flange portion that is adjacent to the cylindrical portion and extends in an outer circumferential direction of the cylindrical portion, the cylindrical portion of the receiving member is fixed to the valve main body, and the seal is provided in a seal space formed between the cylindrical portion, the annular flange portion, and the valve main body, and a cutting process is performed on a region of the cylindrical portion adjacent to the annular flange portion, and the region forms a part of the seal space.