Patents Assigned to Alfdex AB
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Publication number: 20240149278Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing module including a surrounding side wall enclosing a separation space through which a gas flow is permitted, a gas outlet for cleaned gas, and at least one drainage opening for draining separated liquid contaminants from a lower portion of the stationary casing module; a rotating module including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation; a drive member arranged for rotating the rotating module around the axis of rotation; and an inlet module arranged axially above the stationary casing module, including an inlet pipe for supply of the gas to be cleaned to the inlet module. The inlet module is in fluid contact with the separation space and a liquid outlet module arranged axially below the stationary casing module and configured to permit discharge of liquid contaminants drained from the stationary casing module.Type: ApplicationFiled: February 18, 2022Publication date: May 9, 2024Applicant: Alfdex ABInventor: Anders ÖRTEGREN
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Publication number: 20240091791Abstract: A centrifugal separator for separating a liquid phase from a crankcase gas includes a housing, a separation chamber inside the housing, a rotor shaft, a rotor connected to the rotor shaft, a bearing arranged at an end portion of the rotor shaft, and a liquid outlet for the separated liquid phase. The end portion of the rotor shaft extends through the bearing outside the separation chamber. A ring-shaped sealing gap is formed between the housing and a member connected to the rotor shaft outside the separation chamber. The liquid outlet is arranged, seen in relation to the axial direction, radially outside the bearing and radially inside a radially outer end of the ring-shaped sealing gap.Type: ApplicationFiled: November 22, 2021Publication date: March 21, 2024Applicant: Alfdex ABInventor: Anders ÖRTEGREN
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Publication number: 20230415169Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, a gas inlet, a rotating member including a plurality of separation members, a gas outlet, a drainage outlet arranged in the lower portion of the stationary casing and a drive member for rotating the rotating member. The axial inner side surface of the stationary casing incudes at least one straight recess extending in the axial direction for accumulating oil that has been separated in the plurality of separation members. The at least one recess includes a first radial recess surface extending from the axial inner side surface of the stationary casing. The at least one recess extends axially on the inner side surface at least along the axial length of the radially outermost portion of the separation members.Type: ApplicationFiled: November 2, 2021Publication date: December 28, 2023Applicant: Alfdex ABInventor: Mats-Örjan POGÉN
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Publication number: 20230415171Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, a gas inlet, a rotating member, a gas outlet including an outlet opening through a wall of the stationary casing, a drainage outlet arranged in the lower portion of the stationary casing, a drive member for rotating the rotating member, and a stationary axial surface extending into the separation space. The rotating member includes a rotatable axial surface arranged radially outside the stationary axial surface. The rotatable axial surface is arranged at the gas inlet such that liquid contaminants present in the gas to be cleaned is pressed against the rotatable axial surface during operation. The rotating member includes a brim portion extending radially inwards from the rotatable axial surface and forms a ring-shaped sealing gap between the rotating member and the stationary axial surface.Type: ApplicationFiled: November 2, 2021Publication date: December 28, 2023Applicant: Alfdex ABInventor: Mats-Örjan POGÉN
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Publication number: 20220401966Abstract: A disc stack of frustoconical separation discs is configured to be mounted in a separation chamber of a centrifugal separator. The discs are stacked upon each other in a manner forming narrow separation spaces between adjacent discs. The discs are welded to each other at radially outer portions of the discs. A rotor unit for a centrifugal separator, a centrifugal separator including a rotor unit, a method of providing a disc stack of frustoconical separation discs, and a method of providing a rotor unit for a centrifugal separator are also disclosed.Type: ApplicationFiled: November 6, 2020Publication date: December 22, 2022Applicant: Alfdex ABInventor: Patrik JONSSON
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Publication number: 20220388015Abstract: A centrifugal separator is configured to separate liquid and solid particles from a flow of gas generated by a machine. The centrifugal separator includes a centrifugal rotor, a hydraulic drive arrangement configured to rotate the centrifugal rotor, a hydraulic connection for connecting the hydraulic drive arrangement to a hydraulic circuit of the machine, and a connecting portion for connecting the centrifugal separator to the machine. The hydraulic connection is arranged on the connecting portion, and the connecting portion is configured to be inserted into a connecting aperture of the machine. A machine includes the centrifugal separator.Type: ApplicationFiled: December 3, 2020Publication date: December 8, 2022Applicant: Alfdex ABInventor: Ronny JANNERSTAD
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Patent number: 11369977Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned, and a drive member, for rotating the rotating member.Type: GrantFiled: August 17, 2017Date of Patent: June 28, 2022Assignee: ALFDEX ABInventor: Anders Örtegren
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Patent number: 11351557Abstract: A housing for a centrifugal separator is disclosed, wherein the centrifugal separator is configured to separate a liquid phase from crankcase gases of an internal combustion engine using a rotor. The housing includes a housing body forming a separation chamber, an opening in the housing body, a bearing retainer arranged at the opening, and a bearing inserted into the bearing retainer. The bearing is configured to receive a rotor shaft extending into the separation chamber. The bearing retainer includes a bearing seat portion provided with a number of plastically deformed zones retaining the bearing in the bearing retainer. A centrifugal separator and a method of retaining a bearing of a rotor shaft in a housing for a centrifugal separator are also disclosed.Type: GrantFiled: November 9, 2017Date of Patent: June 7, 2022Assignee: ALFDEX ABInventor: Anders Örtegren
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Patent number: 11313262Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned and an electrical motor for rotating the rotating member.Type: GrantFiled: August 17, 2017Date of Patent: April 26, 2022Assignee: ALFDEX ABInventors: Mats Ekeroth, Magnus Wide
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Patent number: 11059053Abstract: 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.Type: GrantFiled: May 30, 2016Date of Patent: July 13, 2021Assignee: ALFDEX ABInventors: Thomas Eliasson, Peter Franzén, Torgny Lagerstedt
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Patent number: 10967388Abstract: A centrifugal separator for separating a liquid phase from crankcase gases of an internal combustion engine includes a separation chamber, a rotor shaft, a rotor inside the separation chamber, an inlet for crankcase gases, a gas outlet, and a liquid outlet for separated liquid phase. The centrifugal separator also includes a liquid outlet chamber, a check valve, and a rotating member. The liquid outlet chamber forms an individual chamber and is arranged in fluid communication with the separation chamber via a liquid passage. The rotating member is connected to the rotor shaft and is arranged inside the liquid outlet chamber. The liquid outlet forms an outlet of the liquid outlet chamber. The check valve is arranged in the liquid outlet.Type: GrantFiled: May 30, 2016Date of Patent: April 6, 2021Assignee: ALFDEX ABInventors: Anders Örtegren, Mats Olsson, Per Stjernswärd, Pedro Hernandez Fraczek, Mikael Walter
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Patent number: 10888879Abstract: An arrangement for cleaning gas includes a centrifugal separator and pre-separation unit. The centrifugal separator includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas from the pre-separation unit, a rotating stack of separation disks, a gas outlet and a drainage outlet for discharging separated liquid impurities. The pre-separation unit is arranged upstream of said inlet of said centrifugal separator, and it comprises a pre-separation inlet having a cross-sectional area A2 and permitting supply of the gas to be cleaned. A2 is larger than the cross-sectional area A1 of the inlet to the separation space of the centrifugal separator. A pre-separation outlet permits supply of gas from the pre-separation unit to the gas inlet of the centrifugal separator.Type: GrantFiled: October 4, 2016Date of Patent: January 12, 2021Assignee: ALFDEX ABInventors: Ronny Jannerstad, Mats-Örjan Pogén, Pedro Hernandez Fraczek
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Publication number: 20190283043Abstract: A housing for a centrifugal separator is disclosed, wherein the centrifugal separator is configured to separate a liquid phase from crankcase gases of an internal combustion engine using a rotor. The housing includes a housing body forming a separation chamber, an opening in the housing body, a bearing retainer arranged at the opening, and a bearing inserted into the bearing retainer. The bearing is configured to receive a rotor shaft extending into the separation chamber. The bearing retainer includes a bearing seat portion provided with a number of plastically deformed zones retaining the bearing in the bearing retainer. A centrifugal separator and a method of retaining a bearing of a rotor shaft in a housing for a centrifugal separator are also disclosed.Type: ApplicationFiled: November 9, 2017Publication date: September 19, 2019Applicant: ALFDEX ABInventor: Anders ÖRTEGREN
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Publication number: 20190162089Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned and an electrical motor for rotating the rotating member.Type: ApplicationFiled: August 17, 2017Publication date: May 30, 2019Applicant: Alfdex ABInventors: Mats EKEROTH, Magnus WIDE
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Publication number: 20190160477Abstract: A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned, and a drive member, for rotating the rotating member.Type: ApplicationFiled: August 17, 2017Publication date: May 30, 2019Applicant: Alfdex ABInventor: Anders ÖRTEGREN
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Publication number: 20180264485Abstract: An arrangement for cleaning gas includes a centrifugal separator and pre-separation unit. The centrifugal separator includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas from the pre-separation unit, a rotating stack of separation disks, a gas outlet and a drainage outlet for discharging separated liquid impurities. The pre-separation unit is arranged upstream of said inlet of said centrifugal separator, and it comprises a pre-separation inlet having a cross-sectional area A2 and permitting supply of the gas to be cleaned. A2 is larger than the cross-sectional area A1 of the inlet to the separation space of the centrifugal separator. A pre-separation outlet permits supply of gas from the pre-separation unit to the gas inlet of the centrifugal separator.Type: ApplicationFiled: October 4, 2016Publication date: September 20, 2018Applicant: ALFDEX ABInventors: Ronny JANNERSTAD, Mats-Örjan POGÉN, Pedro HERNANDEZ FRACZEK
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Publication number: 20180169668Abstract: 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.Type: ApplicationFiled: May 30, 2016Publication date: June 21, 2018Applicant: ALFDEX ABInventors: Thomas ELIASSON, Peter FRANZÉN, Torgny LAGERSTEDT
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Publication number: 20180141058Abstract: A centrifugal separator for separating a liquid phase from crankcase gases of an internal combustion engine includes a separation chamber, a rotor shaft, a rotor inside the separation chamber, an inlet for crankcase gases, a gas outlet, and a liquid outlet for separated liquid phase. The centrifugal separator also includes a liquid outlet chamber, a check valve, and a rotating member. The liquid outlet chamber forms an individual chamber and is arranged in fluid communication with the separation chamber via a liquid passage. The rotating member is connected to the rotor shaft and is arranged inside the liquid outlet chamber. The liquid outlet forms an outlet of the liquid outlet chamber. The check valve is arranged in the liquid outlet.Type: ApplicationFiled: May 30, 2016Publication date: May 24, 2018Applicant: ALFDEX ABInventors: Anders ÖRTEGREN, Mats OLSSON, Per STJERNSWÄRD, Pedro HERNANDEZ FRACZEK, Mikael WALTER
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Patent number: D762755Type: GrantFiled: March 17, 2015Date of Patent: August 2, 2016Assignee: Alfdex ABInventor: Thomas Eliasson
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Patent number: D762756Type: GrantFiled: March 17, 2015Date of Patent: August 2, 2016Assignee: Alfdex ABInventor: Thomas Eliasson