EXPANSIONSVENTIL FÜR KLIMAANLAGE

An expansion valve (10) for heat transfer systems such as an air conditioning system, includes a control element (20) for controlling the flow rate of working fluid through the valve. The control element has a stem member (28) and movable member (42) movable on the stem member. Openings (38) to an i...

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Bibliographische Detailangaben
Hauptverfasser:	HARPER, SANDRA, L., DANA POINT, CA 92629, US, CAMPBELL, CHESTER, D., RANCHO SANTA MARGARITA, CA 92688, US, MATTHIES, ALAN, MILWAUKEE, WI 53216, US, RIEFLER, ROGER, G., BRANDON, MS 39042, US, YABUKI, ROY, M., LOS ANGELES, CA 90029, US, JAIN, VIRENDER, LAKE FOREST, CA 92630, US, ZOPEY, ASHOK, ANAHEIM HILLS, CA 92807, US, KENYON, RICHARD, L., IRVINE, CA 92715, US
Format:	Patent
Sprache:	ger
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:	An expansion valve (10) for heat transfer systems such as an air conditioning system, includes a control element (20) for controlling the flow rate of working fluid through the valve. The control element has a stem member (28) and movable member (42) movable on the stem member. Openings (38) to an internal passage (30) in the stem member are regulated by positioning the movable member to achieve regulated flow rate of refrigerant material through the valve. The movable member of the control element is moved by plunger (24) of a proportional solenoid (22). The proportional solenoid has a mgnetic flux circuit including a low permeance isolationtube (62) surrounding the plunger, which enables removal of the coil (76) and frame (78) of the solenoid from the valve. The solenoid further includes a variable permeance flux washer (69) the flux through which varies with plunger position, which is disposed from a gap (82) which provides an area of magnetic saturation. The proportional solenoid produces force/displacement characteristics which enable precise control of the control element and accurate regulation of the refrigerant flow rate through the valve.