Rinsing arrangement for tribological contact areas and rotary vane pump with such an arrangement
AssigneeRobert Bosch GmbH
InventorsRene Scheerer, Patrick Steiner
Life of this patent
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Abstract
A cooling and lubricating arrangement of tribological contact areas is disclosed. The arrangement includes tribological contact areas that slide over one another, of which at least one contact area has a surface contour with surface depressions in which a lubricant is stored. The surface contour forms a number of elongate grooves, the gap heights of which, at least in respect of respectively two adjacent grooves, are preferably different.
Claims11
A rinsing arrangement, comprising:
- sliding partners, each of said sliding partners including a tribological contact area, the contact area of each sliding partner configured and arranged to slide against one another in a direction of linear relative movement between the sliding partners, wherein a plurality of grooves are formed in at least one of the tribological contact areas between opposite ends thereof, each of said plurality of grooves extending from one of said opposite ends to the other of said opposite ends in the direction of linear relative movement, and
- liquid lubricant situated in said plurality of grooves,
- wherein each of said plurality of grooves has a flow cross section to flow the liquid lubricant between said opposite ends, said flow cross section defined by the height and width of each groove, wherein the flow cross section differs between at least two adjacent grooves of said plurality of grooves.
A rinsing arrangement, comprising:
- sliding partners, each of said sliding partners including a tribological contact area, the contact area of each sliding partner configured and arranged to slide against one another in a direction of relative movement between the sliding partners, wherein at least one groove is formed in at least one of the tribological contact areas between opposite ends thereof in the direction of relative movement, wherein the at least one groove has a labyrinthine profile, and
- liquid lubricant situated in said at least one groove,
- wherein said at least one groove has a flow cross section to flow the liquid lubricant between said opposite ends, said flow cross section defined by the height and width of the groove, wherein the flow cross section differs between at least two adjacent sections of said groove.
A rotary vane pump having a rotor and a lifting ring that is adjustable in a pump housing in a plane perpendicular to the rotational axis of the rotor, the lifting ring and pump housing forming sliding partners, the eccentricity of which can be set by displacing the lifting ring along tribological contact areas that are in sliding contact in the direction of the perpendicular plane between the pump housing and the lifting ring, the rotary vane pump comprising:
- a rinsing arrangement for the sliding partners including a plurality of grooves formed in at least one of the tribological contact areas that slide against one another, each of said plurality of grooves extending between opposite ends of said at least one tribological contact area in the direction of the perpendicular plane, with fluid lubricant being situated in said plurality of grooves,
- wherein each of said plurality of grooves has a flow cross section to flow the liquid lubricant between said opposite ends, said flow cross section defined by the height and width of the groove, wherein the flow cross section differs between at least two adjacent grooves of said plurality of grooves.
Dependencies are inferred from the claim text.