Alfa Laval Corporate Ab

Aktiebolaget Electrolux

Ab Electrolux

Other

Bluewater Sweden Ab

Peter H Hagqvist

Per ANGke Fonser

Carl Häggmark

Peter Thorwid

Roland Isaksson

Lars Hillström

Fredrik Dellby

Olle Törnblom

Jan Skoog

Tom Manelius

Martin Hansson

Kjell Klintenstedt

Galya Simeonova

Björn Wernerson

Per-ANGke Fonser

Torbjörn Larsen

Goran Almlof

Mustafa Rasol

Olle TÖRNBLOM

Lars HILLSTRÖM

Per Fonser

Carl HÄGGMARK

Olle Tornblom

Lars Hillstrom

Carl Haggmark

A centrifugal separator and a method of controlling a centrifugal separator are disclosed. The centrifugal separator includes a separator rotor delimiting a separation space. At least one tube extends from at least one radially outer portion of the separation space towards a central portion of the separator rotor. The method includes inter alia changing a rotational speed of the separator rotor from a first rotational speed to a second rotational speed, such that a heavy phase accumulation at a periphery of the separation space is displaced in a circumferential direction.

Method of controlling centrifugal separator and centrifugal separator

A water filter unit for purifying water fed to the water filter unit. The unit includes a containment defined by a wall section, first and second end sections, wherein the wall section is attached to the first end section and the second end section; a water inlet arranged in the first or second end section through which the water is fed into the containment; a filter membrane arranged in the containment such that at least part of the water is fed through the filter membrane; and a first water outlet for filtered water from the membrane. The unit further includes an injector pump arranged to create an increased flow velocity trough the injector pump of the water fed to the filter membrane, and the injector pump is furthermore arranged to receive unfiltered water not fed through the membrane and recirculate the unfiltered water within the containment.

Water filter unit

A separating disc adapted to be included in a disc package of a centrifuge rotor of a centrifugal separator adapted for separation of components in a supplied medium. The separating disc extends around an axis of rotation and has a tapering shape along the axis of rotation. The separating disc further includes a plurality of distance members, wherein each distance member is formed by a pressed marks extending radially. The separating disc is provided with a guiding arrangement including a number of index positions for providing indexing of the separating disc in the disc package in a rotational position. The number of index positions is different than the number of the plurality of distance members.

Separating disc for centrifugal separator and disc package comprising such separating discs

The invention relates to a centrifugal separator comprising a casing which delimits and seals off a space in which a rotor is arranged. The rotor forms a separation space which is sealed or isolated from the space, and in which separation space centrifugal separation of a higher density and a lower density component from a fluid takes place. An inlet extends into the rotor for introducing fluid to the separation space, and a first outlet extends from the rotor for discharge of a component separated from the fluid. The space is connected to a pump device which is arranged to remove gas, thereby maintaining negative pressure in said space. The rotor comprises at least one second outlet extending from the separation space to the space for discharge of at least one higher density component separated from the fluid. The invention also relates to a method in such a centrifugal separator.

Centrifugal separator having energy consumption reducing devices

A centrifugal separator includes a frame and a drive member configured to rotate a rotating part in relation to the frame around an axis of rotation. The rotating part includes a centrifuge rotor closing a separation chamber. The separation chamber includes a stack of separation discs arranged coaxially around the axis of rotation at a distance from each other such as to form passages between each two adjacent separation discs. The stack of separation discs includes a first type of separation discs having an outer diameter of A or below, and at least one separation disc of a second type having outer diameter B or above, wherein diameter B is larger than diameter A. At least one of the separation discs of the second type is arranged at a position in the disc stack that is within the upper 15% of the total number of separation discs and at least one of the first type of separation disc is arranged axially above the uppermost separation disc of the second type.

Centrifugal separator with disc stack having discs of different diameters

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 plurality of separation plates defining separation passages between the plates. A central gas chamber in the rotor communicates with a radially inner portion of the separation passages and the gas outlet. A space surrounding the rotor communicates with a radially outer portion of the separation passages and the gas inlet. A device is configured to bring the gas stream in rotation upstream of the rotor. The centrifugal rotor is configured such that the rotational flow of the gas mixture drives the rotation of the centrifugal rotor for separating particles from the same gas stream being conducted from the space surrounding the rotor, through the separation passages between the plates and towards the central gas chamber.

Centrifugal separator having a vortex generator

A centrifugal separator for separation of particles from a gas stream is disclosed. The centrifugal separator includes a self-supporting frame for mounting inside an existing vessel for guiding the gas stream. The frame comprises a holder configured to hold the frame at a position inside the vessel, and a first partition for dividing the vessel into a first section and a second section. The first section is upstream of the second section. The separator includes a gas inlet communicating with the first section, and a gas outlet communicating with the second section. A centrifugal rotor is arranged to be rotatably supported in the frame around a rotational axis, the rotor having a first and a second end portion and including a plurality of separation plates defining separation passages between the plates. The centrifugal separator is configured such that the first and second sections communicate via the separation passages of the rotor.

Centrifugal separator having frame secured within a vessel

The invention relates to a disc package for a centrifugal separator and a centrifugal separator provided with a disc package comprising a first set of separation discs and a second set of separation discs. Each separation disc of the first and second sets are provided with a separation surface with is inclined with respect to the radial direction. The separation discs of the first and second sets are arranged coaxially around an axis of rotation at a distance from each other such that to form passages between each two adjacent separation discs. The separation discs of the first set have outer diameters A or below, and the separation discs of the second set have outer diameters B or above, wherein diameter B is larger than diameter A. At least two separation discs of the first set is arranged between every two separation disc of the second set.

Disc package for a centrifugal separator

A cooling device for cooling of a seal fixed in a non-rotatable member and with a circumferential contact surface on a rotating member. A closed ring-formed chamber is arranged in the rotating member radially inside of the seal. The chamber contains an amount of cooling medium which at normal rotating operation is both liquid and gaseous, such that the liquid cooling medium which by centrifugal forces is pressed towards the outer wall of the chamber is evaporated from the heat generated by the seal, and where a cooling member is arranged on the rotating member to cool an area radially inside of the chamber, such that the gaseous cooling medium is condensed from the cooling effect of the cooling member. The invention also relates to a centrifugal separator comprising such a cooling device.

Cooling device for spindle sealing and/or bearing means

An apparatus for purifying, by membrane separation, a fluid in a membrane module,of pressurized aid purifiers. The fluid is brought to flow through a filtering unit,of the membrane module,The flow is circulated for efficiency. This recirculation of the fluid takes place within the filtering unit,The direction of flow of the fluid through a first flow segment,of the filtering unit,is opposite the direction of flow of the fluid through a second flow segment,of the filtering unit

Device for purifying a fluid

In a method for producing a membrane filter for a fluid purifier, wherein the filter includes a pair of membrane layers and a spacer layer placed therebetween, a layer of membrane-forming casting solution is applied to the outer surfaces of a web of fluid-permeable starting material for the membrane layers and the spacer layer. The web-like starting material is passed through a bath so as to gel the casting solution.

Method for production of a continuous web of fluid purifier membrane

In a method of producing spacer elements between pairs of mutually facing membrane surfaces for a fluid purifier, to minimize the number of separate parts required in the assembly of a membrane module for the fluid purifier, the sides of mutually parallel strings of spacer material are joined with the surfaces obliquely to a longitudinal extension of the surfaces. The surfaces are turned to face one another with respective parallel strings intersecting and abutting one another.

Spacer elements between membrane surfaces of a fluid purifier, and a

A method of producing a fluid purifier membrane module, sheets of membrane material are disposed in layers with intermediate spacer elements in a manner to obtain mutually alternating spaces for contaminated and purified fluid respectively. Mutually adjoining sheets of membrane material (12) are joined together in pairs in a manner to obtain membrane units (10) which include closed cavities (28). The membrane units (10) with associated spacer elements (18, 34) are arranged in a stack. The mutually facing outer surfaces of the membrane units are joined together in zones and in a fluid-tight fashion along at least one line (36) which extends through the walls of the membrane units. The membrane units are perforated along the line in a manner to obtain through the membrane units a passageway (32) which communicates with the cavities (28).

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Alvsjo, Sweden

Peter H Hagqvist