Device for controlling the impulsive feeding of a pressurized fluid and an air weapon comprising such device

摘要

A device for controlling fluid delivery includes a hollow body closed by opposed end walls having an inlet and an outlet for a pressurized fluid and defining a first variable-volume chamber, between the inlet and the outlet for containing a first volume of pressurized fluid, an obturating member interacting with the downstream end wall of the hollow body for selectively closing the outlet, a guide member associated with the obturating member guiding it between a first end closing position and a second end opening position of the outlet; and an operating system acting upon the closure member to promote sliding thereof in the hollow body. The obturating member is movable relative to the guide member and is internally hollow to enclose the first chamber, and the guide member has a passage allowing fluid communication between the inlet and the first chamber. An air weapon incorporating the device.

主权项

1. A device (1) for controlling impulsive feeding of a fluid, comprising:
a substantially cylindrical hollow body (2) with a longitudinal axis (L) and with opposite closure end walls (3, 4) having respectively at least one inlet (5) and at least one outlet (6) for a pressurized fluid, wherein said hollow body (2) has internally: a first variable volume chamber (7) interposed between said inlet (5) and said outlet (6) for containing a first volume (V1) of pressurized fluid (P1); an obturating member (9) interacting with one of the end walls disposed downstream (4) of said hollow body (2) for selectively closing said outlet (6); a guide member (8) operatively coupled to said obturating member (9) for guiding said obturating member (9) between a first end closing position and a second end opening position of said outlet (6); and operating means (11) adapted to engage said obturating member (9) for promoting a sliding thereof into said hollow body (2) between said first and said second position; wherein said obturating member (9) and said guide member (8) are reciprocally movable, said obturating member (9) being internally hollow to enclose said first chamber (7) and said guide member (8) having a passage (14) adapted to bring said inlet (5) in fluidic communication with said first chamber (7); and wherein said operating means (11) comprise a second chamber with variable volume (12) provided with said inlet (5) and adapted to receive a second volume (V2) of pressurized fluid (P2), said second chamber (12) being placed upstream of said first chamber (7) and in fluidic communication therewith through said passage (14), in such a manner to control a pressure (P1) into said first chamber (7).