Dynamic seal
AssigneeLeybold Vakuum GmbH
InventorHeinrich Engländer
Life of this patent
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Abstract
A seal is disposed between a rotating part and a stationary part. At least one of the parts is provided with projections which protrude into the seal gap. The seal gap (5) extends approximately radially so that both parts are provided with projections which extend in an axial direction, which are located concentrically in relation to the axis of rotation of the rotating parts and which engage with each other. Said projections are configured in the form of rows of blade-like elements. This effectively seals approximately radially extending seal gaps.
Claims12
A seal between a rotating part and a stationary part in which at least one of the parts is provided with projections which protrude into a radially extending seal gap so that both parts are provided with engaging projections which extend in an axial direction, which projections are located concentrically in relation to an axis of rotation of the rotating part and are designed as rows of blades.
A seal assembly comprising:
- first and second parts which define a gap therebetween, the first and second parts being rotatable relative to each other about an axis of rotation;
- a first ring of blades projecting from the first part into the seal gap in a direction parallel to the axis of rotation;
- a second ring of blades projecting into the seal gap in a direction parallel to the axis of rotation, the first and second rings of blades being disposed contiguous to each other;
- at least one of the rows of blades being skewed relative to a circumferential direction such that the skewed blades provide a pumping action within the seal gap.
Dependencies are inferred from the claim text.