Plate valve
AssigneeENFO Grundlagenforschungs AG
InventorFriedrich Bauer
Life of this patent
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Abstract
A compressor plate valve has a valve seat (1) with flow passages (6), a valve guard and a valve plate (7) formed from concentric rings (16, 17) joined together by radial webs (18). In order to damp the valve plate (7), and in particular to lessen its impact both on opening and on closing the valve, and to reduce troublesome adhesion between the plates, the valve plate (10) comprises a closure plate (14) of soft material such as plastics, and a guide plate (15) of hard material such as steel. The two plates have the same outline in plan view and lie firmly against each other, the soft closure plate (14) facing the valve seat (1) and the guide plate (15) facing the valve guard (2). Only the outer ring (16) of the two plates (14, 15) is loaded by springs (13) and is substantially wider than the inner rings (17).
Claims9
A compressor plate valve, comprising a valve seat, a valve guard and a valve plate which comprises an outer ring and at least one inner ring and controls flow passages in the valve seat, the rings being joined together by radial webs, and for the valve plate a spring system comprising springs disposed over the outer ring and supported against the valve guard, and acting only on the outer ring, wherein the valve plate (7) comprises a closure plate (14) of soft material such as plastics, and a guide plate (15) of hard flexible material such as steel, the two plates (14, 15) lying one on the other with the closure plate (14) facing the valve seat (1) and the guide plate (15) facing the valve guard (2), and wherein the outer ring (16) of both plates (14, 15), this alone being loaded by the springs (13), is wider than the inner rings (17).
Dependencies are inferred from the claim text.