VALVE CORE OF CHARGING VALVE

PROBLEM TO BE SOLVED: To provide a valve core of a charging valve capable of reducing leakage of a refrigerant. SOLUTION: In this valve core of the charging valve wherein valve elements 37, 38 are biased in the direction to be seated on a valve seat 28 by internal pressure of a fluid passage and a c...

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Bibliographische Detailangaben
Hauptverfasser:	YANAGISAWA YUSUKE, KAKEHASHI SHINJI, TAKEUCHI MASAYUKI, MUKAWA MASARU
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBINED HEATING AND REFRIGERATION SYSTEMS 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 REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a valve core of a charging valve capable of reducing leakage of a refrigerant. SOLUTION: In this valve core of the charging valve wherein valve elements 37, 38 are biased in the direction to be seated on a valve seat 28 by internal pressure of a fluid passage and a compression coil spring 40 to air-tightly sealing a fluid passage side from an atmospheric air side, the valve elements 37, 38 are provided with a first airtight member 37 disposed in the direction to be communicated with the atmospheric air side and a second airtight member 38 disposed in the direction to be communicated with a fluid passage side, the second airtight member 38 is composed of an elastic material having superior blister resistance to a CO2refrigerant, and the first airtight member 37 is composed of a resin material having a coefficient of permeability to the CO2refrigerant, smaller than that of the second airtight member 38. Thus the leakage of refrigerant can be minimized. COPYRIGHT: (C)2008,JPO&INPIT