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US 4,958,992 AGranted
Variable capacity swivelling vane pump
AssigneeNotron Engineering AG
InventorGerhard Winiger
Life of this patent
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AssigneeNotron Engineering AG
InventorGerhard Winiger
Estimating the term…
Variable capacity swivelling vane pump, comprising a radially displaceable rotor (13) connecting eccentrically in a rotor cage (h) with guided vanes (15), which are rotatably supported in vane recesses (16) and on cage pins (14). The vanes (15) thus convert the rotor eccentricity (d) into a pivoting-propulsion movement. Furthermore, the rotor (13) rests on a hollow secondary shaft (7), which is mounted outside the pump casing in a bearing carrier (4) arranged in a horizontally movable manner. The rotor (13) is driven by means of the primary shaft (12) located in the hollow secondary shaft (7), the primary shaft being connected with the rotor cage (h). This structure has small oscillating masses, is versatile, easy to manufacture and assemble and operates with minimum frictonal losses and is free from bearing and sealing problems.
A variable capacity swivelling vane pump for conveying a medium having a pump casing, an inlet, an outlet, a pump channel with suction chamber, a sealing chamber, an outlet chamber, and a central shaft, said pump having a radially adjustable rotor with vanes, said rotor mounted on a rotor support for rotation in an eccentric manner within said sealing chamber, said vanes sealing said suction chamber during the rotation of the rotor, characterized in that said rotor rotates within a rotor cage in an eccentric manner about said shaft, said rotor cage having an internal circumferential surface, said rotor including rotatable vane receivers having said vanes mounted for reciprocal movement within for maintaining contact with said internal circumferential surface during the rotation of said rotor by a swivelling-stroke movement and accordingly seal the entire of said internal circumferential surface without said rotor support coming into contact with the medium conveyed.
A variable capacity swivelling vane pump assembly having a pump casing, said pump casing including an inlet, an outlet, a sealing zone between said inlet and said outlet, a pump channel with suction space, a sealing section and outlet space, a primary shaft, a radially adjustable rotor having a vane receiver means and a circumferential surface vane means arranged for reciprocal movement in said vane receiver means, characterized in that the rotor is mounted on a hollow secondary shaft located about said primary shaft, said rotor having axially directed bores opening onto said circumferential surface of the rotor, said bores accepting said vane receiver means for rotating motion, said rotor being mounted in a rotor cage with cage bolts passing through said vane means, thereby maintaining said vane means in a fixed position relative to said rotor cage, whereby said vane receiver means can execute a reciprocal movement bounded at one end by said circumferential surface of said rotor so that the turning of the rotor compensates for the variable eccentricity of the secondary shaft caused by rotor displacement and, therefore, directly seals off the pump casing in the sealing zone.
Dependencies are inferred from the claim text.