Method and valve apparatus for controlling a reciprocatable...

F - Mech Eng,Light,Heat,Weapons – 15 – B

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F15B 11/046 (2006.01) F15B 13/04 (2006.01) F15B 15/22 (2006.01)

Patent

CA 2233676

A method and an apparatus for controlling the function of all kinds of reciprocatable power machines which are actuated by means of a pneumatic, hydraulic of any other pressure fluid, irrespective if the machines are of rotary or axially operating type, in which the active power stroke is accomplished using full power of pressure fluid against a reciprocatable piston (2) in the active air pressure chamber (10, 12), and in which the reversing of the direction of operation is made by alternatingly supplying pressure fluid to the opposite air pressure chamber (12, 10) of the machine, said valve comprises a valve poppet (6) having several channels providing means (7) for alternatingly placing one of the pressure chambers (10, 12) of the reciprocatable fluid actuated machine (1, 2) under full pressure, means (8) for building up a certain counter pressure in a pressure chamber which is, at the actual moment, inactive, and means (9) for evacuating the pressure from an inactive pressure chamber of the fluid actuated machine.

Cette invention concerne un procédé et un appareil permettant de commander le fonctionnement de toute sorte d'engins à moteur de type va-et-vient qui sont entraînés par un système pneumatique, hydraulique ou faisant appel à tout autre fluide sous pression, et ceci que l'engin ait un mode de fonctionnement rotatif ou axial. Le temps moteur actif est obtenu en utilisant la pleine puissance du fluide sous pression contre un piston (2) effectuant un mouvement de va-et-vient dans la chambre à air comprimé active (10, 12). Le renversement du sens de fonctionnement se fait en envoyant par alternance un fluide sous pression dans la chambre à air comprimé opposée (12, 10) de l'engin. La soupape comprend un champignon (6), lequel comporte plusieurs systèmes d'alimentation par canaux (7) permettant de mettre par alternance une des chambres de pression (10, 12) de l'engin de type va-et-vient entraîné par fluide (1, 2) sous une pression maximale, ainsi qu'un système (8) permettant d'établir une certaine contre-pression dans une chambre de pression étant inactive à ce moment, et, enfin, un système (9) d'évacuation de la pression d'une chambre de pression inactive de l'engin entraîné par fluide.

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