Patents Assigned to Alfa Laval Corporate AB
  • Publication number: 20230120257
    Abstract: A centrifugal separator and a method of operating the separator are disclosed. The separator includes a centrifuge rotor having a rotor wall enclosing an inner space containing a stack of separation disks. The rotor includes an inlet for a product, a first outlet for a light phase of the product, and a second outlet for a heavy phase of the product. The second outlet includes a plurality of outlet channels extending along an inner side of the rotor wall from an outer region towards an inner region of the inner space. Each outlet channel transports a flow of the heavy phase from the outer region. The separator includes a plurality of temperature sensors provided at a respective outlet channel. Each sensor senses a temperature in the proximity of the respective outlet channel and provides a signal representing the sensed temperature.
    Type: Application
    Filed: March 31, 2021
    Publication date: April 20, 2023
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Per-Gustaf LARSSON
  • Publication number: 20230099252
    Abstract: A method for determining if air is trapped within a centrifugal separator, the separator including a stationary frame, a rotatable assembly, a drive unit for rotating the rotatable assembly relative the frame around an axis of rotation, a feed inlet for supply of a liquid mixture to be separated, a first liquid outlet for discharge of a separated liquid phase and a second liquid outlet for discharge of a heavy phase having a density that is higher than said liquid phase. The rotatable assembly includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around a vertical axis of rotation.
    Type: Application
    Filed: February 18, 2021
    Publication date: March 30, 2023
    Applicant: Alfa Laval Corporate AB
    Inventor: Per-Gustaf LARSSON
  • Publication number: 20230070771
    Abstract: A bearing member for supporting a rotatable axle includes a bearing housing; at least one bearing inserted into the bearing housing, wherein the bearing is configured to receive a rotatable shaft extending through the bearing; and a tilting member arranged around the bearing housing. The tilting member includes a pack of annular discs forming a through hole for receiving the bearing housing, wherein each of the annular discs includes a plurality of apertures extending through each of the discs and wherein the tilting member further includes a sleeve element provided in each of the apertures for holding the annular discs together as a stack and for receiving a fastener for attaching the tilting member to the bearing housing or said stationary machine element. The bearing member further includes at least one fastening element extending through a sleeve of the tilting member and attaching the tilting member to the bearing housing.
    Type: Application
    Filed: March 11, 2021
    Publication date: March 9, 2023
    Applicant: Alfa Laval Corporate AB
    Inventor: Thomas ELIASSON
  • Publication number: 20230070550
    Abstract: A centrifugal separator for separation of a liquid mixture includes a stationary frame, a rotatable assembly and a drive unit for rotating the rotatable assembly relative the frame around an axis of rotation, wherein the rotatable assembly includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around a vertical axis of rotation. The rotor casing includes a mechanically hermetically sealed inlet for supply of the liquid mixture to the separation space; a first liquid outlet that is mechanically hermetically sealed and arranged for discharge of a separated liquid phase and a second liquid outlet that is mechanically hermetically sealed and arranged for discharge of a separated heavy phase, the heavy phase having a density that is higher than said liquid phase.
    Type: Application
    Filed: February 11, 2021
    Publication date: March 9, 2023
    Applicant: Alfa Laval Corporate AB
    Inventors: Douglas OSMAN, Per-Gustaf LARSSON, Peter THORWID, Staffan KÖNIGSSON
  • Patent number: 11596896
    Abstract: An exhaust gas cleaning system comprises a first sub system including a scrubber unit comprising a scrubber arranged to wash the exhaust gas with a scrubber fluid, and a centrifugal separator arranged in communication with the scrubber unit for receiving the scrubber fluid after washing and separate it into a first and a second fraction, which second fraction is more polluted than the first fraction. The exhaust gas cleaning system further comprises a second sub system including a membrane filter arranged in communication with the centrifugal separator for receiving the first fraction output from the centrifugal separator and separating it into a third and a fourth fraction, which fourth fraction is more polluted than the third fraction. A method for cleaning exhaust gas onboard a ship involves cleaning an exhaust gas onboard a ship.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: March 7, 2023
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Sören Mölgaard, Casper Leemreize
  • Publication number: 20230061944
    Abstract: A plate heat exchanger comprises heat exchanger plates each comprising a heat exchanger area extending in parallel with an extension plane and comprising a corrugation extending from a primary level on one side of the extension plane to a secondary level on an opposite side of the extension plane. Four porthole areas enclose a respective porthole and comprise two first porthole areas comprising a respective annular base area around the porthole at the secondary level. Each first porthole area comprises a first annular ridge around the porthole and projecting from the annular base area to the primary level, and a second annular ridge around and at a distance from the first annular ridge and projecting from the annular base area to the primary level. The first and second annular ridges are through-broken by a number of depressions.
    Type: Application
    Filed: January 15, 2021
    Publication date: March 2, 2023
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Jens ROMLUND
  • Patent number: 11592245
    Abstract: A baffle for a block-type heat exchanger comprising a baffle plate. The baffle plate comprises a first surface and a second surface being parallel to a baffle plane located between the first surface and the second surface. The baffle plate comprises a first longitudinal edge, a second longitudinal edge, a first transverse edge and a second transverse edge. The baffle comprises a resilient member at the second longitudinal edge. The baffle comprises a reinforcement extending away from the baffle plane.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: February 28, 2023
    Assignees: ALFA LAVAL CORPORATE AB, ALFA LAVAL VICARB SAS
    Inventor: Olivier Noël-Baron
  • Publication number: 20230025470
    Abstract: A baffle support and a baffle for a block-type heat exchanger. The baffle support comprises a base plate extending in a first direction and a transverse second direction. The baffle support comprises a first pair and a second pair of projections extending from the front surface of the base plate to engage the baffle. The first pair of projections is located further in the first direction than the second pair of projections. The baffle comprises a mounting member at each transverse edge of a baffle plate. Each mounting member comprises at least one stop surface) facing a first longitudinal edge of the baffle plate. A baffle assembly comprising two baffle supports and a baffle.
    Type: Application
    Filed: September 29, 2022
    Publication date: January 26, 2023
    Applicants: ALFA LAVAL CORPORATE AB, ALFA LAVAL VICARB SAS
    Inventor: Olivier NOËL-BARON
  • Publication number: 20230015150
    Abstract: A centrifugal separator is configured for processing a product by separating a relatively, heavy component and a relatively light component therefrom. The centrifugal separator includes a spindle supported by a stationary frame, A drive unit acts on a rotating member mounted on the spindle to rotate the spindle. A centrifuge rotor mounted to the spindle encloses a separation space. An upper bearing housing is mounted to the stationary frame and supports bearings including an outer bearing ring attached to the upper bearing housing and an inner bearing ring attached to the spindle. The upper bearing housing is mounted to the stationary frame via an elastic member permitting the upper bearing housing and the spindle to move radially, and via an upper tilting member permitting the spindle to tilt during operation of the centrifugal separator.
    Type: Application
    Filed: March 11, 2021
    Publication date: January 19, 2023
    Applicant: Alfa Laval Corporate AB
    Inventor: Thomas ELIASSON
  • Publication number: 20230009788
    Abstract: The disclosure relates to a shaft support for supporting a lower portion of a rotatable shaft of an agitator configured to be installed in a tank, the shaft support comprising a support ring with an inwardly facing bearing surface configured to form a slide bearing journaling a lower portion of the rotatable shaft, wherein the bearing surface has a non-circular shape in a plane having a normal parallel to the shaft axis.
    Type: Application
    Filed: December 9, 2020
    Publication date: January 12, 2023
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Søren Thorøe BJERRISGAARD
  • Publication number: 20220412383
    Abstract: A method for mounting a stack of separating discs in a centrifugal separator bowl comprising a bowl body and a bowl hood includes mounting and securing the stack of separating discs on a distributor; placing and rotatably fixing the distributor in the bowl body; mounting the bowl hood on the bowl body; arranging a compression tool for compressing the stack of separating discs; fastening the screw with a second threaded end in a first (threading) of the distributor; tightening said nut, in relation to said first threaded end of said screw in such a manner that said distributor is lifted to an upper position; fixing the distributor in its upper position; and dismounting the compression tool. A compression tool for performing the method includes a support, a screw and a nut in accordance to above. A centrifugal separator kit includes a centrifugal separator and the compression tool.
    Type: Application
    Filed: November 9, 2020
    Publication date: December 29, 2022
    Applicant: Alfa Laval Corporate AB
    Inventor: Jouko PITKÄMÄKI
  • Publication number: 20220404108
    Abstract: A plate heat exchanger gasket includes an elongate body and a first number of elongate projections projecting from an upper side of the body and extending along the gasket's longitudinal extension. Each projection is defined by a top and two opposing flanks extending from the top. Referring to a cross section perpendicular to the gasket longitudinal extension, for each of a second number of unsymmetrical projections of the projections, a first area defined by an outer flank of the flanks, the body upper side and a normal of the body upper side extending through the top of the unsymmetrical projection, is smaller than a second area defined by an inner flank of the flanks, the body upper side and the normal of the body upper side extending through the top of the unsymmetrical projection. This normal is displaced from a center normal of the body upper side.
    Type: Application
    Filed: October 20, 2020
    Publication date: December 22, 2022
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Martin SANDGREN
  • Patent number: 11530883
    Abstract: The disclosure relates to a header connected to or formed as a part of a heat exchanger. The heat exchanger has a heat exchanger body with a plurality of discrete channels for a first fluid and a plurality of discrete channels for a second fluid. The header has a first end having a round configuration and a second end being provided with a plurality of discrete channels. The header is provided with a plurality of dividers dividing one or more internal channels of the circular pipe into the plurality of discrete channels at the second end. At least some of the dividers extend from the second end to the first end and define a plurality of channel mouths at the first end. The disclosure also relates to a heat exchanger.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: December 20, 2022
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Fredrik Strömer, Kristian Walter
  • Patent number: 11511214
    Abstract: A method for cleaning fuel oil for a diesel engine includes providing a fuel oil to be cleaned, supplying said fuel oil to be cleaned to a centrifugal separator, and cleaning said fuel oil in the centrifugal separator to provide a clean oil phase. The method further includes measuring the viscosity of the fuel oil to be cleaned before cleaning in said centrifugal separator or the viscosity of the clean oil phase, and regulating the temperature of the fuel oil to be cleaned based on said measured viscosity.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 29, 2022
    Assignee: ALFA LAVAL CORPORATE AB
    Inventor: Mitul Sawjani
  • Patent number: 11511212
    Abstract: An oil dehydrator, comprising; a vacuum chamber, a vacuum pump arranged at an upper end region of the vacuum chamber for establishing a negative pressure within the vacuum chamber and for fluid transportation of water and air out from the vacuum chamber through an outlet opening, and a pipe for fluid transportation of oil into and/or out from the vacuum chamber, where the pipe is connected to a lower end region of the vacuum chamber, wherein the vacuum chamber at the lower end region has at least one flow channel fluidly connecting the vacuum chamber and the pipe, wherein an orifice check valve is arranged between the vacuum chamber and the pipe for controlling the flow of oil into and out from the vacuum chamber through the at least one flow channel.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: November 29, 2022
    Assignee: ALFA LAVAL CORPORATE AB
    Inventor: Nils Rune Sæthre
  • Publication number: 20220364487
    Abstract: An exhaust gas cleaning system includes a particle filter device comprising a casing, plural hollow ceramic filter rods arranged at least partly inside a gas passage of the casing, and a gas inlet and gas outlet. The particle filter device guides exhaust gas from the gas inlet, through the gas passage and to the gas outlet. The particle filter device further comprises a perforated plate extending at least partly along the filter rods and partly blocking an exhaust gas flow path from the gas inlet to the gas passage. The perforated plate defines openings allowing exhaust gas to flow into the gas passage. The filter rods are gas permeable to allow exhaust gas to penetrate, during filtration, a respective wall of the filter rods and flow into the filter rods. A respective open upper end of the filter rods communicates with the gas outlet so exhaust gas leaves the casing.
    Type: Application
    Filed: May 10, 2022
    Publication date: November 17, 2022
    Applicant: ALFA LAVAL CORPORATE AB
    Inventors: Søren MØLGAARD, Nick HØY HANSEN, Ruddi KRUSE MORTENSEN
  • Patent number: 11499786
    Abstract: A heat transfer plate comprises a first end portion, a second end portion and a center portion arranged in succession along a longitudinal center axis of the plate. The center portion comprises a heat transfer area provided with a heat transfer pattern comprising support ridges and support valleys longitudinally extending parallel to the longitudinal center axis of the plate. The support ridges and support valleys are alternately arranged along a number of separated imaginary longitudinal straight lines extending parallel to the longitudinal center axis of the plate and along a number of separated imaginary transverse straight lines extending perpendicular to the longitudinal center axis of the plate. The heat transfer pattern further comprises turbulence ridges and turbulence valleys. At least a plurality of the turbulence ridges and turbulence valleys along at least a center portion of their longitudinal extension extend inclined relative to the transverse imaginary straight lines.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: November 15, 2022
    Assignee: ALFA LAVAL CORPORATE AB
    Inventor: Fredrik Blomgren
  • Patent number: 11493285
    Abstract: A baffle support and a baffle for a block-type heat exchanger. The baffle support comprises a base plate extending in a first direction and a transverse second direction. The baffle support comprises a first pair and a second pair of projections extending from the front surface of the base plate to engage the baffle. The first pair of projections is located further in the first direction than the second pair of projections. The baffle comprises a mounting member at each transverse edge of a baffle plate. Each mounting member comprises at least one stop surface) facing a first longitudinal edge of the baffle plate. A baffle assembly comprising two baffle supports and a baffle.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: November 8, 2022
    Assignees: ALFA LAVAL CORPORATE AB, ALFA LAVAL VICARB SAS
    Inventor: Olivier Noël-Baron
  • Patent number: 11480393
    Abstract: A heat exchanger plate for use in a plate package for a heat exchanger device is disclosed. The plate has a geometrical main extension plane (q) and a circumferential edge portion, the circumferential edge portion having a curved upper portion, a substantially straight lower portion and two opposing side portions interconnecting the upper and the lower portions. An upper porthole is arranged in an upper section of the heat exchanger plate and located at a distance from the upper portion of the circumferential edge portion thereby defining an upper intermediate portion. The upper intermediate portion includes the shortest distance (d2) between a centre of the upper porthole and the upper portion of the circumferential edge portion. The heat exchanger plate further comprises an upper flange having an extension along the upper portion of the circumferential edge portion.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: October 25, 2022
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Anders Skoglösa, Per Sjödin
  • Patent number: D976962
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: January 31, 2023
    Assignee: Alfa Laval Corporate AB
    Inventors: Lars Kjaerulff, Simon Cargill