F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
103/82
F04C 2/08 (2006.01) F04C 2/10 (2006.01) F04C 2/20 (2006.01)
Patent
CA 1081043
ABSTRACT OF THE DISCLOSURE A high-pressure rotary fluid-displacing machine is described which is suitable for use as a motor or pump. It comprises a housing, an internally toothed annular gear, an externally toothed pinion arranged eccentrically within said annular gear and intermeshing therewith, an engagement-free crescent-shaped gap being left between the addendum circles of the pinion and of the annular gear, respectively, on the side thereof opposite the contact point of the pitch circle of the pinion with the pitch circle of the annular gear, a shaft bearing the pinion and being adapted for transmitting torque, and a gap-filling member in the gap having an inner and an outer curved surface, the inner surface being sealingly contacted by the addendum surfaces of the teeth of the pinion, and the outer surface being sealingly contacted by the adden- dum surfaces of the teeth of the annular gear. The housing is composed of at least two parts and has a first channel in said housing for conveying fluid medium under high-pressure therethrough and a second channel in said housing for conveying a fluid medium under lower pressure therethrough. The machine further comprises at least a first lateral plate member being adapted for closing off laterally a work space intermediate the teeth of the pinion and the teeth of the annular gear and disposed in axial direction on one side of the said pi- nion and annular gear, the central region of the plate member being movable with a slight clearance relative to the pinion, and the plate member having an external rim portion clamped in between two parts of the housing; and a collar on each plate member present and projecting from the face of the latter away from the pinion and annular gear and adapted for bearing the pinion shaft therein, the housing having an internal chamber into which the collar protrudes, the internal chamber being in free communication with the first channel in the hous- ing, whereby the plate member can be subjected to high-pressure exerted by the high-pressure fluid medium. - 2 -
282035
Eisenmann Siegfried
Harle Hermann
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