EXPANSION VALVE FOR A REFRIGERATION CIRCUIT OR AIR-CONDITIONING CIRCUIT

Expansion valves for refrigeration or air-conditioning circuits, comprising a flow housing (20) with an inlet (82) and an outlet (84), an actuator (10) via which a control body (54) is axially movable, and at least one first throughflow cross-section (78) between the inlet (82) and the outlet (84),...

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Bibliographische Detailangaben
1. Verfasser:	GERARDS, Hans
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	Expansion valves for refrigeration or air-conditioning circuits, comprising a flow housing (20) with an inlet (82) and an outlet (84), an actuator (10) via which a control body (54) is axially movable, and at least one first throughflow cross-section (78) between the inlet (82) and the outlet (84), which is surrounded by a valve seat (72) and which can be closed and opened by means of the control body (54), are known. In order to be able to connect to the expansion valve in both directions and in order for only small actuation forces to be required, the invention proposes a second valve seat (74) surrounding a second throughflow cross-section (80) between the inlet (82) and the outlet (84), wherein the two throughflow cross-sections (78, 80) can be closed and opened jointly by the one control body (54) and an annular gap (86) is formed axially between the two valve seats (72, 74).