Alfa Laval Corporate Ab

3nine Ab

Alfdex Ab

Peter Franzén

Torgny Lagerstedt

Claes Inge

Thomas Eliasson

Ingvar Hällgren

Claes-Göran Carlsson

Hans Moberg

Stefan Szepessy

Leonard Borgström

Leif Gunnar Larsson

Johan Strömberg

A centrifugal separator structure is configured for cleaning of crankcase gases from an internal combustion engine. The centrifugal separator structure includes a separator rotor configured for rotation about a centre axis arranged inside a stationary housing. The separator rotor includes an axle member configured for connection to a shaft of a driving device. A stack of separation discs is supported on the axle member. The axle member is un-journaled inside the stationary housing when the centrifugal separator structure is separate from the driving device. Further, an assembly includes the centrifugal separator structure and a driving device.

Centrifugal separator structure and assembly having an unjournaled axle member

Conical disc element () for a rotor of centrifugal separators, wherein the disc element has a plurality of projections () protruding radially outwardly or inwardly from an outer or an inner peripheral edge (), respectively, of the disc element, and rotors assembled from such disc elements.

Centrifugal separator conical rotor disc elements having radial projections, and rotors having disc elements

Apparatus for centrifugal separation of solid and/or liquid particles from a flow of gas, wherein two or more rotors () provided with conical separation surface elements () are located in a surrounding stationary casing (), which delimits a common chamber () for collecting particles separated in the rotors. Each rotor has a fan () rotating together therewith. The fans () of the rotors are located in a common fan housing () that is separate from and adjacent to the casing () defining the collection chamber ().

Apparatus for centrifugal separation of solid and/or liquid particles from a flow of gas

Device for cleaning crankcase gases from an internal combustion engine by means of a centrifugal separator (), comprising a housing () with a rotor (), which is rotatably supported in the housing and has a plurality of tightly separated separating discs (). The housing () has an interface surface, which is designed for direct mounting of the housing () over a corresponding opening in a valve cover of the internal combustion engine.

Device for cleaning crank case gases

A method and apparatus for the separation of particles from a flow of gas, where both large, heavy and small, light particles are separated off from the gas by the combined effect of an electrostatic attraction force and a centrifugal force in a centrifugal separator of the type that comprises a rotor that has a plurality of adjacent surface elements with intermediate gas flow gaps and that is mounted in such a way that it can rotate in a surrounding casing, which casing has an inlet for unclean gas and an outlet for clean gas and an outlet for separated-off particles.

Method and apparatus for separation of particles from a flow of gas

A centrifugal separator for cleaning of a gas from solid and/or liquid particles suspended therein, includes a stationary housing and a rotor arranged therein. The rotor at its one axial end has a central inlet for gas to be cleaned and delimits a central space communicating with the inlet. Around the central space a stack of conical separation discs is arranged in the rotor. These discs form between themselves several through flow passages which at their one ends communicate with the central space in the rotor and at their other ends communicate directly with a receiving chamber surrounding the rotor in the stationary housing. The rotor supports several turbine blades, which are arranged in a ring around the central inlet of the rotor, and at least one nozzle is adapted to direct a gaseous driving fluid towards the turbine blades for the rotor rotation.

Centrifugal separator for cleaning of a fluid

In a vehicle adapted to be propelled by means of an internal combustion engine crankcase gases coming from the combustion engine are cleaned by means of a centrifugal separator. The rotor of the centrifugal separator is driven by means of pressurized air delivered by a compressor, e.g. a so called turbo compressor, which is driven by means of the combustion engine. During periods when the compressor delivers pressurized air in an insufficient amount and/or at insufficient pressure the rotor of the centrifugal separator is instead driven by means of pressurized air coming from a container containing so called auxiliary pressurized air. The auxiliary pressurized air may have a substantially larger pressure than the pressurized air normally delivered by the compressor. The combustion engine is used also for accomplishing the overpressure of the auxiliary pressurized air in the container.

Method and a device for cleaning of crankcase gases coming from an internal combustion engine adapted for propelling a means of transportation

Centrifugal separator for cleaning of a gaseous fluid

In a centrifugal separator, the rotor of which is adapted to be driven by means of a gaseous driving fluid, the rotor itself supports a ring of turbine blades extending around the rotational axis of the rotor. A stationary nozzle is adapted to direct a flow of the driving fluid towards the ring of turbine members. After the driving fluid has passed between the turbine blades and has influenced them for driving of the centrifugal rotor, it enters a reversing chamber formed by a stationary reversing member. In the reversing chamber the driving fluid is caused to change its direction and is then conducted again towards the ring of turbine members in order to be utilized a second time for driving of the centrifugal rotor.

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Tullinge, Sweden

Peter Franzén