Temperature expansion valve

A thermostatic expansion valve comprising: a valve member (5) for controlling the flow rate of a refrigerant flowing through an evaporator (33) in a refrigerating cycle by changing the opening of a valve hole (4); a housing (10) having an air-tight chamber (12) filled with heat-sensitive gas, the pr...

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Bibliographische Detailangaben
Hauptverfasser:	WATANABE CHIHARA, WATANABE KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING COCKS COMBINED HEATING AND REFRIGERATION SYSTEMS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING 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 MACHINE TOOLS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING SOLDERING OR UNSOLDERING TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A thermostatic expansion valve comprising: a valve member (5) for controlling the flow rate of a refrigerant flowing through an evaporator (33) in a refrigerating cycle by changing the opening of a valve hole (4); a housing (10) having an air-tight chamber (12) filled with heat-sensitive gas, the pressure of which is varied in correspondence to the change of temperature of the refrigerant so as to drive the valve member (5); and a plug member (16) sealing an opening formed on an outer wall (14) of the housing (10) so as to seal the heat-sensitive gas inside the air-tight chamber (12). The peripheral of the opening (15) and the plug member (16) are welded solely by projection welding at the tapered surface portion thereof. The tapered angle of the tapered surface portion is approximately 90 to 120 degrees, and the length is approximately 0.2mm to 1.5mm.