Apparatus using oscillating rotating pistons

F - Mech Eng,Light,Heat,Weapons – 02 – B

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Details

F02B 53/00 (2006.01) F01C 19/00 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2392735

A motor, expander, compressor, or hydraulic device is formed with an oscillating rotating piston (2, 3) comprising a cylinder (4, 5) having an axis of rotation and end surfaces and defining an oscillating compression volume (24, 25) and expansion volume (26, 27). An axial sealing member (15) separates the compression volume (24, 25) and the expansion volume (26, 27), and seal members (20) seal end surfaces of the piston. Valves (10, 13) operate to close the compression volume and open the expansion volume at each oscillation of the piston. Means are provided for reversing the rotation of the cylinder at the end of a compression cycle of the piston. One or more pistons may be provided that contact other pistons along axial surfaces to form axial seal surfaces with rolling contacts that reduce friction energy losses.

Selon l'invention, un moteur, un expanseur, un compresseur ou un dispositif hydraulique est composé d'un piston rotatif oscillant (2, 3) comprenant un cylindre (4, 5) présentant un axe de rotation et des surfaces d'extrémité et définissant un volume de compression oscillant (24, 25) et un volume d'expansion (26, 27). Un élément axial d'étanchéité (15) sépare le volume de compression (24, 25) du volume d'expression (26, 27) et des éléments de joint (20) assurent l'étanchéité des surfaces d'extrémité du piston. Des soupapes (10, 13) ferment le volume de compression et ouvrent le volume d'expansion à chaque oscillation du piston. Des moyens permettent d'inverser la rotation du cylindre à la fin d'un cycle de compression du piston. Au moins un piston peut être en contact avec un autre piston le long des surfaces axiales afin de former des surfaces d'étanchéité axiales à contacts roulants réduisant les pertes d'énergie par frottement.

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