Method of operation of a spherical positive displacement...

F - Mech Eng,Light,Heat,Weapons – 01 – C

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F01C 3/06 (2006.01) F04C 3/06 (2006.01)

Patent

CA 2656886

The invention relates to rotary machines, the rotor and pistons of which are provided with nonparallel axis of rotation. A spherical cavity (4) formed by a body (1) comprises a rotor (7), which is arranged therein and is provided with a through slot (21) in which a piston (8) in the form of a slotted disc (33) is mounted in such a way that it is enabled to carry out rotational oscillatory motions. The working cavity is divided into bypass (2) and pressure (3) sections. A C-shaped divider (9) is placed in the bypass section (2) and separates the working medium input window (12) from the output window (13) thereof. In the pressure section (3),the working medium is pushed by the projecting part of the piston (8). The inventive spherical positive displacement rotary machine makes it possible to uniformly supply a working medium during a whole cycle. The input and output windows are spaced along a shaft, thereby making it possible to develop, on the basis of said machine, multistage borehole pumps and hydraulic drives. A high tightness and a low internal hydraulic resistance render the inventive machine effective within a large range of viscosities of the working medium. The simple geometrical shape and the interaction of " plane-on-plane" and "sphere-on-sphere" contacting parts provides the machine with an extended service life.

L'invention concernes des machines rotatives à axes de rotation non parallèles du rotor et des pistons. Dans cette machine, à l'intérieur de la cavité sphérique (4) formée par le corps (1) on a monté un rotor (7) comportant une fente traversante (21) allant le long de l'axe, dans laquelle on a installé un piston (8) se présentant comme un disque à fente (33) et capable d'osciller de manière rotative. La cavité de travail est divisée en une partie de dérivation (2) et une partie de compression (3). Dans la partie de dérivation (2), le séparateur en "C" sépare l'orifice d'entrée (12) du fluide de travail de l'orifice de sortie (13) du fluide de travail. Dans la partie de compression (3), le fluide de travail est comprimé par la partie saillante du piston (8). L'écartement commode des orifices d'entré et de sortie (12, 13) le long de l'arbre a permis de créer sur sa base des entraînements hydrauliques et des pompes immergées à étages multiples. Un degré élevé d'étanchéité et une résistance hydraulique interne réduite rendent la machine efficace dans une vaste gamme de viscosités du fluide de travail. La simplicité de ses formes géométriques et l'interaction des pièces du type "plan sur plan" ou "sphère sur sphère" lui assurent une durée de vie potentiellement prolongée.

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