Quick-acting valve
AssigneeDeutsches Zentrum fuer Luft- und Raumfahrt e.V.
InventorDietmar Neuhaus
Life of this patent
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Abstract
A valve has a chamber (11) in a housing (10), in which the valve seat (17) is closed by a valve body (19). The valve seat (17) is supported by an actuator (15) which is capable of axially expanding and contracting. In response to an actuating signal the actuator (15) contracts which causes the valve seat (17) to move away from the valve body (19) so rapidly that the valve body (19) is not capable of following, which produces a flow passing through the valve seat (17). The flow pushes the valve body (19) back into the closed position. The valve allows short switching times and a high repetition rate to be achieved.
Claims25
A quick-acting valve comprising a chamber (11) having an inlet opening (12 or 25) and an outlet opening (13) and containing a movable valve seat (17) capable of being closed by a movable unrestrained valve body (19), the unrestrained valve body (19) being configured to be pressed into a closed position against the valve seat (17) by a fluid introduced into the chamber (11) through the inlet opening (12), said movable valve seat (17) being housed in said chamber (11) for movement relative to an actuator (15) which moves the movable valve seat (17) in response to an actuating signal, the actuator (15) moves the movable valve seat (17) away from the unrestrained valve body (19) in the closed position to effect opening therebetween and at a speed so rapid as to prevent the unrestrained valve body (19) from following said movable valve seat (17).
Dependencies are inferred from the claim text.