Orbiter vacuum pump capable of dry-running
AssigneeNidec Gpm GmbH
InventorsConrad Nickel, Jakob Schnitzer, Franz Pawellek
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Abstract
The present invention relates to a dry-running, oil-free orbiter vacuum pump with an improved bearing arrangement consisting of a material pairing capable of dry-running A pivot bearing with a bearing cavity open towards the pump chamber for receiving a pivot head of a blocking slide is arranged inside the pump housing. The orbiter vacuum pump capable of dry-running is characterized in particular in that at least one sliding surface of the pivot bearing allocated to the bearing cavity or to the pivot head is made of a composite material including a solid lubricant.
Claims17
A dry-running orbiter vacuum pump comprising:
- a pump housing with a cylindrical pump chamber;
- an orbiter eccentric piston with a guide slot and a cylindrical exterior surface, a cylindrical cross-section of the orbiter eccentric piston being smaller than a cylindrical cross-section of the pump chamber;
- a shaft for driving the orbiter eccentric piston by means of an eccentric disk with a crankpin that meshes with the orbiter eccentric piston;
- a blocking slide received in the guide slot of the orbiter eccentric piston, one end of the blocking slide being pivotably mounted at the pump housing between an inlet and an outlet;
- wherein
- a pivot bearing with a bearing cavity open towards the pump chamber for receiving a pivot head of the blocking slide is arranged inside the pump housing;
- wherein
- at least one sliding surface of the pivot bearing allocated to the bearing cavity or to the pivot head is made of a composite material including a solid lubricant.
Dependencies are inferred from the claim text.