Patents by Inventor Leonard Borgström
Leonard Borgström has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20220331817Abstract: A centrifugal separator for clarification of a liquid mixture into a heavy phase and a light phase, having a centrifugal separator bowl rotatable around an axis and encasing a separation space, and a sludge space radially outward of said separation space. The centrifugal separator bowl includes a hermetic inlet for feeding a liquid mixture to said separation space; a first hermetic outlet for a separated clarified light phase; and a second hermetic outlet for a separated heavy phase; a plurality of outlet conduits extending from an outer position in said sludge space to said second hermetic outlet. Each of the outlet conduits has a flow restriction in the form of a nozzle or vortex diode. A method to control such a centrifugal separator, in order to provide a stable flow through said outlet conduits, is also disclosed.Type: ApplicationFiled: September 10, 2020Publication date: October 20, 2022Applicant: Alfa Laval Corporate ABInventors: Leonard BORGSTRÖM, Olle TÖRNBLOM
-
Patent number: 11213831Abstract: A centrifugal separator having a device for the transformation of kinetic energy of a liquid rotating in a discharge chamber around a rotational axis to pressure energy includes a discharge element for the discharge of liquid out of the discharge chamber, which discharge element has a radially outer part shaped as a body of revolution about the rotational axis and is arranged to be located in a rotating liquid body in the discharge chamber, and at least one outlet channel formed in the discharge element and having an inlet opening located in a surface of the body of revolution and elongated in the liquid flow direction, the inlet opening connecting to the interior of an outlet tube via the outlet channel. The outlet channel has a defined axial height and a defined width which vary along their extension from the inlet opening to the connection to the outlet tube in such a way that a defined aspect ratio h/w decreases along at least a part of the extension of the outlet channel.Type: GrantFiled: June 12, 2019Date of Patent: January 4, 2022Assignee: ALFA LAVAL CORPORATE ABInventor: Leonard Borgström
-
Publication number: 20210245176Abstract: A centrifugal separator having a device for the transformation of kinetic energy of a liquid rotating in a discharge chamber around a rotational axis to pressure energy includes a discharge element for the discharge of liquid out of the discharge chamber, which discharge element has a radially outer part shaped as a body of revolution about the rotational axis and is arranged to be located in a rotating liquid body in the discharge chamber, and at least one outlet channel formed in the discharge element and having an inlet opening located in a surface of the body of revolution and elongated in the liquid flow direction, the inlet opening connecting to the interior of an outlet tube via the outlet channel. The outlet channel has a defined axial height and a defined width which vary along their extension from the inlet opening to the connection to the outlet tube in such a way that a defined aspect ratio h/w decreases along at least a part of the extension of the outlet channel.Type: ApplicationFiled: June 12, 2019Publication date: August 12, 2021Applicant: Alfa Laval Corporate ABInventor: Leonard BORGSTRÖM
-
Patent number: 11052409Abstract: A method of supervising and controlling an E-line position in a centrifugal separator and a centrifugal separator include the E-line positon being continuously calculated based on inter alia, monitored density of light and heavy liquid phases, and monitored pressure at outlet side of light and/or heavy liquid outlet passages. First and/or second valves are controlled to control the E-line position, based on the supervised E-line position.Type: GrantFiled: April 22, 2016Date of Patent: July 6, 2021Assignee: ALFA LAVAL CORPORATE ABInventors: Leonard Borgström, Peter Thorwid
-
Publication number: 20180117601Abstract: Methods of supervising and controlling an E-line position in a centrifugal separator are disclosed herein. Further a centrifugal separator is disclosed herein. The E-line positon is continuously calculating based on inter alfa, monitored density of light and heavy liquid phases, monitored pressure at outlet side of light and/or heavy liquid outlet passages.Type: ApplicationFiled: April 22, 2016Publication date: May 3, 2018Applicant: ALFA LAVAL CORPORATE ABInventors: Leonard BORGSTRÖM, Peter THORWID
-
Patent number: 9440245Abstract: The invention relates to a centrifugal separator comprising a rotor arranged to be rotatable around an axis of rotation (x). An inlet chamber is formed in the rotor and an inlet pipe extends into the rotor and has an opening in the inlet chamber for supply of a liquid mixture of components. An inlet arrangement is provided in the inlet chamber, comprising a set of annular discs coaxial with the rotor and forming passages for liquid between the discs, or a helically shaped element coaxial with the rotor and forming passages for liquid between the windings of the helically shaped element. The separator further comprises vanes arranged upstream of the inlet arrangement such as to cause a pre-rotation and pre-acceleration of the liquid mixture. The vanes may be provided on a removable element of the rotor.Type: GrantFiled: February 15, 2013Date of Patent: September 13, 2016Assignees: ALFA LAVAL CORPORATE AB, SYNCRUDE CANADA LTD.Inventors: Leonard Borgström, Lasse Hurnasti, Daniel John Bulbuc, David Harold Childs, Thaddeus Eugene Kizior, Kevin Reid
-
Publication number: 20150024921Abstract: The invention relates to a centrifugal separator comprising a rotor arranged to be rotatable around an axis of rotation (x). An inlet chamber is formed in the rotor and an inlet pipe extends into the rotor and has an opening in the inlet chamber for supply of a liquid mixture of components. An inlet arrangement is provided in the inlet chamber, comprising a set of annular discs coaxial with the rotor and forming passages for liquid between the discs, or a helically shaped element coaxial with the rotor and forming passages for liquid between the windings of the helically shaped element. The separator further comprises vanes arranged upstream of the inlet arrangement such as to cause a pre-rotation and pre-acceleration of the liquid mixture. The vanes may be provided on a removable element of the rotor.Type: ApplicationFiled: February 15, 2013Publication date: January 22, 2015Inventors: Leonard Borgström, Lasse Hurnasti, Daniel John Bulbuc, David Harold Childs, Thadeus Eugene Kizior
-
Patent number: 8425394Abstract: The invention relates to a centrifugal separator having a bearing device and a lubricating device comprising a rotatable pump device. The pump device comprises a lubricant inlet to receive lubricant from a lubricant reservoir, and a duct to convey lubricant to an outlet device for delivering at least part of said lubricant in the form of lubricant mist through at least one lubricant outlet. The pump device further comprises a gas inlet and the outlet device comprises a gas outlet, whereby during rotation of the pump device a gas flow is maintained from the gas inlet to the gas outlet bringing along lubricant present in the duct towards the outlet device. The centrifugal separator further comprises a housing which surrounds the bearing device and the lubricating device and which allows lubricant mist to pass from the lubricating device to the bearing device in order to lubricate the latter.Type: GrantFiled: December 15, 2009Date of Patent: April 23, 2013Assignee: Alfa Laval Corporate ABInventors: Lars-Erik Skytt, Per Fonser, Håkan Appelquist, Leonard Borgström
-
Patent number: 8241507Abstract: A method and a device for separation of a fluid in the liquid state comprising two liquids that are not mutually miscible, with different densities, wherein a first liquid is to be cleansed from a second liquid, whereby the fluid in the liquid state is conducted through a rotor where centrifugal separation of the second liquid from the first liquid takes place, and is then conducted into a tank, with the proportion of the second liquid being reduced to less than 5%, and by conducting the fluid, after centrifugal separation, through a restriction, whereby the pressure of the fluid in the liquid state is reduced, which causes portions of the fluid in the liquid state to evaporate so that further portions of the second liquid escape in the form of a gas which is conducted away, thereby further reducing the proportion of the second liquid in the outgoing fluid in the liquid state.Type: GrantFiled: November 1, 2007Date of Patent: August 14, 2012Assignee: Alfa-Laval Corporate ABInventors: Claes-Göran Carlsson, Leonard Borgström, Carl Häggmark, Hans Moberg, Jan Skoog
-
Publication number: 20120021888Abstract: The invention relates to a centrifugal separator having a bearing device and a lubricating device comprising a rotatable pump device. The pump device comprises a lubricant inlet to receive lubricant from a lubricant reservoir, and a duct to convey lubricant to an outlet device for delivering at least part of said lubricant in the form of lubricant mist through at least one lubricant outlet. The pump device further comprises a gas inlet and the outlet device comprises a gas outlet, whereby during rotation of the pump device a gas flow is maintained from the gas inlet to the gas outlet bringing along lubricant present in the duct towards the outlet device. The centrifugal separator further comprises a housing which surrounds the bearing device and the lubricating device and which allows lubricant mist to pass from the lubricating device to the bearing device in order to lubricate the latter.Type: ApplicationFiled: December 15, 2009Publication date: January 26, 2012Applicant: ALFA LAVAL CORPORATE ABInventors: Lars-Erik Skytt, Per Fonser, Håkan Appelquist, Leonard Borgström
-
Patent number: 7824459Abstract: In a centrifugal separator for cleaning a gas containing liquid impurities, a stationary casing encloses a separation space having an inner wall surface. An inlet is provided. A rotating member is provided in the separation space downstream the inlet rotates in a direction of rotation around an axis of rotation. The rotating member brings the gas to rotation in the direction of rotation for separation of liquid impurities from the gas. A gas outlet is provided downstream the rotating member for discharge of the cleaned gas. A first liquid outlet is provided upstream the gas outlet and downstream the rotating member for discharge of separated liquid impurities and comprises an outlet hole. A surrounding ring groove extends outwardly from the inner wall surface in the stationary casing and has a surrounding bottom surface, wherein the outlet hole extends outwardly from the bottom surface.Type: GrantFiled: January 12, 2007Date of Patent: November 2, 2010Assignee: Alfa Laval Corporate ABInventors: Leonard Borgström, Claes-Göran Carlsson, Jan Skoog, Rolf Ridderstråle
-
Patent number: 7824458Abstract: The invention refers to a centrifugal separator for cleaning of a gas containing liquid impurities. The centrifugal separator comprises a stationary casing, which encloses a separation space and has an inner wall surface. A rotating member is provided in the separation space and arranged to rotate in a direction of rotation around an axis (x) of rotation. The rotating member brings the gas to rotation for separation of the liquid impurities from the gas. A gas outlet is provided for discharge of the cleaned gas. A first liquid outlet is provided downstream the rotating member for discharge of separated liquid impurities. The separation space comprises an annular surface which extends between the rotating member and the inner wall surface. The annular surface is configured to transport liquid impurities radially outwardly to the first liquid outlet.Type: GrantFiled: January 12, 2007Date of Patent: November 2, 2010Assignee: Alfa Laval Corporate ABInventors: Leonard Borgström, Claes-Göran Carlsson, Jan Skoog, Rolf Ridderstråle
-
Patent number: 7789076Abstract: This document describes a device for cleaning of crankcase gases from a combustion engine, and a combustion engine having such a device. An inlet conduit is connected to a crankcase of the combustion engine. A centrifugal separator receives a flow of crankcase gases from the crankcase via the inlet conduit and comprises a routable centrifuge rotor for centrifuging the crankcase gases. A drive device drives the centrifuge rotor. An outlet conduit discharges cleaned crankcase gases from the centrifugal separator. The rotary speed of the drive device, and thus the rotary speed of the centrifuge rotor, is controllable depending on the gas pressure in the crankcase. An export conduit may be connected to the inlet conduit and adapted to enable discharge of a flow of crankcase gases from the crankcase by-passing the centrifugal separator depending on the gas pressure in the crankcase.Type: GrantFiled: November 21, 2005Date of Patent: September 7, 2010Assignee: Alfa Laval Corporate ABInventors: Leonard Borgström, Claes-Göran Carlsson, Hans Moberg, Jan Skoog, Carl Häggmark
-
Patent number: 7485084Abstract: The invention refers to a centrifugal separator and a method of separating a product to a heavy phase and light phase. A centrifuge rotor encloses a closed separation space, which has a radially outer part for the heavy phase, a radially inner part for the light phase and a central gas-filled space. The radially outer part is separated from the radially inner part by a interface layer level. An inlet extends into the separation space for feeding the product. A first outlet extend from the radially outer part for discharge of the heavy phase. A second outlet extends from the radially inner part for discharge of the light phase. A control equipment permits control of the interface layer level to a desired radial position. A sensor senses a parameter related to the gas pressure in the central space. The control equipment controls the counter pressure in the first outlet in response to the sensed parameter for controlling the interface layer level to the desired radial position.Type: GrantFiled: March 2, 2006Date of Patent: February 3, 2009Assignee: Alfa Laval Corporate ABInventors: Leonard Borgström, Lasse Hurnasti
-
Patent number: 7022150Abstract: 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.Type: GrantFiled: October 19, 2001Date of Patent: April 4, 2006Assignee: Alfa Laval Corporate ABInventors: Leonard Borgström, Claes-Göran Carlsson, Peter Franzén, Claes Inge, Torgny Lagerstedt, Hans Moberg, Stefan Szepessy
-
Patent number: 6821319Abstract: In connection with cleaning of gas from particles suspended therein and being heavier than the gas the gas is caused to rotate in a chamber delimited in a stationary housing, so that the particles by centrifugal force are separated from the gas and are thrown towards a stationary housing. The rotation of the gas is accomplished by means of a rotor, which includes a stack of conical separation discs arranged coaxially with each other and concentrically with the rotational axis of the rotor. The gas to be cleaned is caused to flow through interspaces between the separation discs, while they are rotating, the particles by the centrifugal force being brought into contact with the insides of the separation discs. In contact with the insides of the separation discs the particles first move along the generatrices of the separation discs and then move along inclined guiding members, which are arranged in contact with said insides.Type: GrantFiled: September 17, 2002Date of Patent: November 23, 2004Assignee: Alfa Laval ABInventors: Hans Moberg, Torgny Lagerstedt, Claes Inge, Claes-Göran Carlsson, Stefan Szepessy, Peter Franzén, Leonard Borgström
-
Patent number: 6751951Abstract: Gases produced by a combustion engine, e.g. crankcase gases, are conducted through a separation chamber formed and surrounded by a centrifugal rotor, by means of which the gases are caused to rotate, so that particles suspended in the gases are separated by means of centrifugal force. The centrifugal rotor is caused to rotate by means of a pressure fluid that is generated by means of the combustion engine.Type: GrantFiled: January 9, 2003Date of Patent: June 22, 2004Assignee: Alfa Laval ABInventors: Leonard Borgström, Claes Göran Carlsson, Peter Franzén, Claes Inge, Torgny Lagerstedt, Hans Moberg, Stefan Szepessy, Tommy Myrvang
-
Patent number: 6536211Abstract: Gases produced by a combustion engine (1), e.g. crankcase gases, are conducted through a separation chamber formed and surrounded by a centrifugal rotor (R), by means of which the gases are caused to rotate, so that particles suspended in the gases are separated by means of centrifugal force. The centrifugal rotor (R) is caused to rotate by means of a pressure fluid that is generated by means of the combustion engine (1).Type: GrantFiled: December 4, 2000Date of Patent: March 25, 2003Assignee: Alfa Laval ABInventors: Leonard Borgström, Claes Göran Carlsson, Peter Franzén, Claes Inge, Torgny Lagerstedt, Hans Moberg, Stefan Szepessy, Tommy Myrvang
-
Patent number: 4721505Abstract: In a centrifuge having a rotor, an inlet structure has a stack of annular discs and a conduit supplying liquid to a receiving chamber formed centrally in the disc stack. The liquid mixture to be separated is caused to flow in thin layers in the passages between the discs, and by friction with the discs is accelerated to the rotational speed of the rotor. Liquid is supplied to the receiving chamber in such a way that a continuous liquid phase is maintained between the mixture in the supply conduit and in the receiving chamber.Type: GrantFiled: October 23, 1986Date of Patent: January 26, 1988Assignee: Alfa-Laval Separation ABInventors: Claes Inge, Torgny Lagerstedt, Leonard Borgstroem, Claes-Goeran Carlsson, Sven-Olof Naebo, Hans Moberg, Peter Franzen
-
Patent number: 4701158Abstract: A centrifugal separator has a rotor with an inlet device comprising means forming a receiving chamber that surrounds a stationary inlet tube extending into the rotor. The inlet tube opens into a receiving compartment of the receiving chamber. The receiving chamber also has an induction compartment which surrounds the inlet tube at some distance from its opening.A deflecting member separates the receiving compartment from the induction compartment and leaves a passage between itself and the inlet tube. Induction members connected with the rotor are operable to induce liquid rotation in the induction chamber radially outside the level of said passage between the deflecting member and the inlet tube, whereas no substantial induction of rotation should take place in the receiving compartment.Type: GrantFiled: October 23, 1986Date of Patent: October 20, 1987Assignee: Alfa-Laval Separation ABInventors: Claes Inge, Torgny Lagerstedt, Leonard Borgstroem, Claes-Goeran Carlsson, Sven-Olof Naebo, Hans Moberg, Peter Franzen