Alfa Laval Corporate Ab

Alfdex Ab

Thomas Eliasson

Ingvar Hällgren

Torgny Lagerstedt

Kasper Höglund

Peter Franzén

Stefan Szepessy

Per ANGke Fonser

Claes-Göran Carlsson

Jan Skoog

Olle Törnblom

Leif Gunnar Larsson

Mats-Örjan Pogén

Mats-Orjan Pogén

Leif Bengtsson

Janke Burmeister

Per Stjernswärd

Per Fonser

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

A centrifugal separator for cleaning gas containing liquid impurities includes a stationary casing, enclosing a separation space through which a gas flow is permitted. The stationary casing includes a surrounding side wall, a first end wall and a second end wall. An inlet extends through the stationary casing and permits supply of the gas to be cleaned. A rotating member includes a stack of separation disks rotatable around an axis of rotation. A drive member rotates the rotating member. A gas outlet permits discharge of cleaned gas, and includes an outlet opening through the side wall. A drainage outlet permits discharge of liquid impurities separated from the gas. The outlet opening is positioned opposite to the stack of separation disks.

Centrifugal separator having an outlet opening opposite a stack of separation disks

A centrifugal separator for cleaning a gas containing liquid impurities includes a stationary casing, enclosing a separation space and a surrounding side wall, a first end wall and a second end wall. An inlet extends through the stationary casing and permits supply of the gas to be cleaned. A rotating member includes a stack of separation disks rotatable around an axis of rotation by means of a drive member. A gas outlet permits discharge of cleaned gas and comprises an outlet opening through the stationary casing and an upstream portion extending from the outlet opening. A drainage outlet permits discharge of liquid impurities separated from the gas. The drainage outlet is provided in the gas outlet downstream the upstream portion. The gas outlet conveys the liquid impurities to the drainage outlet.

Centrifugal separator having a drainage outlet downstream of an upstream portion of the gas outlet

A centrifugal separator and a method for separation of particles from a gas stream is disclosed. The separator includes a frame, a gas inlet and a gas outlet. A centrifugal rotor is arranged to be rotatable in the frame around a rotational axis and includes a separating member. A central gas chamber in the rotor communicates with a radially inner portion of the separating member and the gas outlet. A space surrounding the rotor communicates with a radially outer portion of the separating member and the gas inlet. A drive provides rotation of the centrifugal rotor for separating particles from the gas stream being conducted from the space surrounding the rotor, through the separation member and towards the central gas chamber. A ring-formed sealing arranged between and in sealing contact with the first frame portion and the centrifugal rotor. This improves the separation performance of a centrifugal separator for separation of particles from a gas stream, by reducing pressure losses and leakage from the central gas chamber.

Centrifugal separator

A centrifugal separator includes a housing, a spindle, and a rotor. The spindle is only journaled in a bearing arrangement fixedly positioned in the housing at the first axial end portion. The centrifugal separator includes a seal arranged between the spindle and the housing. The seal is arranged at a distance from the bearing arrangement where the spindle is subjected to deflection. The seal includes a cylindrical inner surface associated with the housing, a circular slot in the spindle or in a rotating member associated with the spindle, and a piston ring arranged in the slot and abutting against the cylindrical inner surface.

Disc stack centrifugal separator with sealing arrangement

Separator

The present invention relates to a separator and more specifically, but not exclusively, to a centrifugal separator for the cleaning of a gaseous fluid. A centrifugal separator is provided as comprising a housing defining an inner space, and a rotor assembly for imparting a rotary motion onto a mixture of substances to be separated. The rotor assembly is located in said inner space and is rotatable about an axis relative to the housing. The rotor assembly comprises an inlet for receiving said mixture of substances, an outlet from which said substances are ejected from the rotor assembly during use, and a flow path for providing fluid communication between the inlet and outlet, wherein the outlet is positioned more radially outward from said axis than the inlet.

Gas cleaning separator

The invention refers to a centrifugal separator comprising a stationary casing defining an inner space, a spindle and a rotating member, which is attached to the spindle and arranged to rotate around an axis of rotation with a rotary speed. The rotating member comprises a number of separating discs which are provided in the inner space. A drive member drives the spindle and the rotating member with said rotary speed. A sensor device senses the rotation of the rotating member in relation to the casing. The sensor device comprises at least one transmitter element which is provided in the inner space on the rotating member and a receiver element which is provided at the casing and arranged to sense the transmitter element. The receiver element is provided on the casing outside the inner space.

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Älvsjö, Sweden

Thomas Eliasson