Leybold Vakuum Gmbh

Heinrich Engl&auml;nder

Christian Beyer

Ralf Adamietz

Hans-Rudolf Fischer

Josef Hodapp

Gunter Schutz

Markus Henry

Gerhard Wilhelm Walter

Alexander Bosma

Dieter G&ouml;tz

A magnetic bearing for rapidly rotating machines ( ), in particular, for turbo compressors, drag vacuum pumps, or similar, includes two bearings ( ), each with a stator magnetic-ring set ( ) and a rotor magnetic-ring set ( ). Movement of the rotor is damped by magnetic-ring sets ( ) arranged concentrically to each other. The stator magnetic-ring set ( or ) is arranged externally and the rotor magnetic-ring set ( or ) is arranged internally. Non-magnetic elements with good electrical conducting properties ( ) are connected to the outer circumference surfaces of at least one part of the magnetic ring of each of the stator-side magnetic-ring sets ( ).

Magnetic bearing with damping

A vacuum pump ( ) includes a housing ( ) in which a suction inlet opening ( ) is defined. A vibration absorber ( ) includes a suspension body ( ) and an absorber jacket ( ). The housing ( ) of the vacuum pump ( ) is connected directly to one end of the suspension body ( ) in vacuum-tight connection and an opposite end of the suspension body carries a connecting port ( ). By connecting the suspension body directly with the housing without mechanically releasable interconnection elements, the overall height of the pump and suspension body assembly is reduced.

Vacuum pump with vibration absorber

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 ( ) 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.

Dynamic seal

A molecular vacuum pump ( ) has a stator unit ( ) and a rotor unit ( ) disposed within a housing ( ). A narrow gap is maintained during operation between the stator unit ( ) and the rotor unit ( ). The stator unit ( ) and the rotor unit ( ) are coupled together with respect to vibration to form a rotor/stator system ( ). Elastic vibration elements ( ) mount the rotor/stator system in the housing such that the rotor/stator system rotates as a unit relative to the housing. Because the rotor and stator units vibrate together rather than relative to each other, very small, precise tolerances are maintained between them.

Friction vacuum pump

A molecular vacuum pump ( ) includes a stator unit ( ) which has a stator blade package including one or more rows of stator blades ( ), and a rotor unit ( ) which has rotor blade package including one or more rows of rotor blades ( ). The rotor blades ( ) and the state blade ( ) intermesh with each other in the functionally assembly state. The rotor blades ) include slots ( ) whose arrangement, depth and width are selected such that the stator unit ( ) and the rotor unit ( ) may be screwed together or unscrewed from one another. Alternatively, the stator blades ( ) include slots ( ) whose arrangement, depth and width are selected such that the stator unit ( ) and the rotor unit ( ) may be screwed together or unscrewed from one another.

Friction vacuum pump with a stator and a rotor

The invention relates to a friction vacuum pump ( ) with a stator ( ) and a rotor ( ), which form at least two pump stages ( ) with one gas inlet ( ) each, as well as with junction for the pump stages, which are equipped with junction openings ( ) and serve for the connection of the gas inlets ( ) of the pump stages with devices to be evacuated; in order to avoid high conductance losses it is proposed that the junction openings ( ) are located in a plane which is disposed laterally adjacent to the pump stages ( ) such that the distance between the junction openings ( ) and the rotor axis ( ) is of minimum feasible size.

Growing community of inventors

Linnich, Germany

Heinrich Engländer

Growing community of inventors

Linnich, Germany

Heinrich Engl&auml;nder

Heinrich Engländer