Patents by Inventor Bent Madsen

Bent Madsen 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: 20200037625
    Abstract: Disclosed is a centrifugal pump for pumping a heat-sensitive fluid foodstuff, comprising a volute casing having an inlet port and an outlet port for the heat sensitive fluid, the volute casing enclosing an impeller comprising a disc operably associated with an end of a shaft, said disc having a first surface and a second surface opposite the first surface, said first surface facing the inlet of the casing and being provided with vanes, wherein the second surface of the disc of the impeller is exposed to a cooling medium. The centrifugal pump is suitable for reducing the built-up of fouling on the surface of the impeller disc facing the inlet of the casing and being provided with vanes.
    Type: Application
    Filed: April 18, 2018
    Publication date: February 6, 2020
    Inventors: Bent PEDERSEN, Knud THORSEN, Jørgen MADSEN, Ole POULSEN
  • Patent number: 10293346
    Abstract: A screw conveyor for a centrifugal separator comprises a conveyor hub carrying a helical conveyor flight and providing a helical channel between adjacent turns of helical conveyor flight. The screw conveyor has an up-stream end and a down-stream end. At least two partition walls are arranged in a side-by-side relation to divide at least a radial part of a length of the helical channel into three sub-channels arranged in a side-by-side relation to cause a liquid flowing in the helical channel to flow in an up-stream direction towards the up-stream end in an intermediate sub-channel and in an opposite down-stream direction towards the down-stream end in two adjacent sub-channels on either side of the intermediate sub-channel.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: May 21, 2019
    Assignee: ALFA LAVAL CORPORATE AB
    Inventor: Bent Madsen
  • Patent number: 9834328
    Abstract: A heating-nozzle arrangement for heating a partly formed packaging container, comprises one or more nozzle assemblies, arranged to direct a heated air flow to portions of a packaging container to be sealed; a gas-supply portion, arranged to supply a mass flow of heated gas to the nozzle assembly, further the nozzle assembly comprises at least a first and a second hole pattern and that the heating-nozzle arrangement further comprises a selector for directing the mass flow of heated air towards the first hole pattern or the second hole pattern respectively.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: December 5, 2017
    Assignee: TETRA LAVAL HOLDINGS & FINANCE S.A.
    Inventor: Bent Madsen
  • Patent number: 9579665
    Abstract: A centrifugal separator includes a rotating body rotating in use around an axis. The rotating body comprises a bowl, which comprises a base at one longitudinal end of said bowl, said base defining a rear longitudinal area. An outlet passage extends through the base and an outlet housing is provided in the rear longitudinal area. The outlet housing is communicating with the outlet passage to receive liquid therefrom and the outlet housing has an outlet opening discharging in use liquid from the rotating body. The outlet opening comprises a weir edge defining in normal use a level of a surface of a liquid in the bowl. The outlet housing is rotatable around an adjustment axis and the outlet opening is placed in a side wall offset from the adjustment axis.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 28, 2017
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Bent Madsen, Henrik Reiff
  • Publication number: 20170001738
    Abstract: A heating-nozzle arrangement for heating a partly formed packaging container, comprises one or more nozzle assemblies, arranged to direct a heated air flow to portions of a packaging container to be sealed; a gas-supply portion, arranged to supply a mass flow of heated gas to the nozzle assembly, further the nozzle assembly comprises at least a first and a second hole pattern and that the heating-nozzle arrangement further comprises a selector for directing the mass flow of heated air towards the first hole pattern or the second hole pattern respectively.
    Type: Application
    Filed: December 19, 2014
    Publication date: January 5, 2017
    Applicant: TETRA LAVAL HOLDINGS & FINANCE S.A.
    Inventor: Bent MADSEN
  • Patent number: 9352338
    Abstract: A centrifugal separator for liquids with two phases of different density includes a bowl with a base defining a first rear area in a casing. At least two outlet passages extend through the base. A first outlet passages communicates with a first outlet opening discharging liquid in the first rear area, and the second outlet passages communicates with a second outlet opening discharging liquid in a second rear area rear of said first rear area. A flange attached to the bowl and a partition of the casing with an annular sealing in between separates the first and the second rear area.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: May 31, 2016
    Assignee: Alfa Laval Corporate AB
    Inventors: Henrik Reiff, Bent Madsen
  • Patent number: 9126208
    Abstract: A centrifugal separator comprises a bowl rotating in use around an axis of rotation. The axis of rotation extends in a longitudinal direction, and a radial direction extends perpendicular to the longitudinal direction. A base plate provided at one longitudinal end of the bowl, said base plate having an internal and external side, an outlet opening being provided in the base plate. A casing is projecting at the outlet opening on the external side of said base plate, said casing comprising a casing side, a normal to said casing side extending at an acute angle relative to a circumferential direction of the bowl at said casing and a discharge opening is provided in said casing side. The discharge opening is radially outwardly limited by a weir with an overflow edge and said discharge opening extending radially inwardly to a position above a highest intended level of liquid in the bowl.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: September 8, 2015
    Assignee: Alfa Laval Corporate AB
    Inventors: Bent Madsen, Klaus Dircks
  • Publication number: 20150231647
    Abstract: A screw conveyor for a centrifugal separator comprises a conveyor hub carrying a helical conveyor flight and providing a helical channel between adjacent turns of helical conveyor flight. The screw conveyor has an up-stream end and a down-stream end. At least two partition walls are arranged in a side-by-side relation to divide at least a radial part of a length of the helical channel into three sub-channels arranged in a side-by-side relation to cause a liquid flowing in the helical channel to flow in an up-stream direction towards the up-stream end in an intermediate sub-channel and in an opposite down-stream direction towards the down-stream end in two adjacent sub-channels on either side of the intermediate sub-channel.
    Type: Application
    Filed: September 12, 2013
    Publication date: August 20, 2015
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Bent Madsen
  • Publication number: 20140148326
    Abstract: A centrifugal separator for liquids with two phases of different density includes a bowl with a base defining a first rear area in a casing. At least two outlet passages extend through the base. A first outlet passages communicates with a first outlet opening discharging liquid in the first rear area, and the second outlet passages communicates with a second outlet opening discharging liquid in a second rear area rear of said first rear area. A flange attached to the bowl and a partition of the casing with an annular sealing in between separates the first and the second rear area.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 29, 2014
    Applicant: Alfa Laval Corporate AB
    Inventors: Henrik Reiff, Bent Madsen
  • Publication number: 20130310242
    Abstract: A centrifugal separator includes a rotating body rotating in use around an axis. The rotating body comprises a bowl, which comprises a base at one longitudinal end of said bowl, said base defining a rear longitudinal area. An outlet passage extends through the base and an outlet housing is provided in the rear longitudinal area. The outlet housing is communicating with the outlet passage to receive liquid therefrom and the outlet housing has an outlet opening discharging in use liquid from the rotating body. The outlet opening comprises a weir edge defining in normal use a level of a surface of a liquid in the bowl. The outlet housing is rotatable around an adjustment axis and the outlet opening is placed in a side wall offset from the adjustment axis.
    Type: Application
    Filed: November 14, 2011
    Publication date: November 21, 2013
    Applicant: ALFA LAVAL CORPORATE AB
    Inventors: Bent Madsen, Henrik Reiff
  • Publication number: 20130274084
    Abstract: A centrifugal separator comprises a bowl rotating in use around an axis of rotation. The axis of rotation extends in a longitudinal direction, and a radial direction extends perpendicular to the longitudinal direction. A base plate provided at one longitudinal end of the bowl, said base plate having an internal and external side, an outlet opening being provided in the base plate. A casing is projecting at the outlet opening on the external side of said base plate, said casing comprising a casing side, a normal to said casing side extending at an acute angle relative to a circumferential direction of the bowl at said casing and a discharge opening is provided in said casing side. The discharge opening is radially outwardly limited by a weir with an overflow edge and said discharge opening extending radially inwardly to a position above a highest intended level of liquid in the bowl.
    Type: Application
    Filed: June 13, 2013
    Publication date: October 17, 2013
    Inventors: Bent Madsen, Klaus Dircks
  • Patent number: 8485959
    Abstract: A centrifugal separator comprises a bowl rotating in use around an axis of rotation. The axis of rotation extends in a longitudinal direction, and a radial direction extends perpendicular to the longitudinal direction. A base plate provided at one longitudinal end of the bowl, said base plate having an internal and external side, an outlet opening being provided in the base plate. A casing is projecting at the outlet opening on the external side of said base plate, said casing comprising a casing side, a normal to said casing side extending at an acute angle relative to a circumferential direction of the bowl at said casing and a discharge opening is provided in said casing side. The discharge opening is radially outwardly limited by a weir with an overflow edge and said discharge opening extending radially inwardly to a position above a highest intended level of liquid in the bowl.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: July 16, 2013
    Assignee: Alfa Laval Corporate AB
    Inventors: Bent Madsen, Klaus Dircks
  • Patent number: 8157716
    Abstract: The centrifugal separator comprises a rotatable bowl having a separation chamber defined by a base. The base comprises a first outlet opening defined by a weir at a first level. An outlet chamber communicates with the separation chamber through a first outlet opening. The outlet chamber is connected with an outlet opening, which opens at a second level below the first level into an exterior of the bowl. The outlet chamber outlet opening is provided with an outlet nozzle with an outlet direction opposite the direction of rotation, and an overflow inlet opening is present in the outlet chamber, and is placed at a third level between the first and the second level. The overflow inlet opening communicates with an overflow outlet opening, that opens into the exterior of the bowl.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: April 17, 2012
    Assignee: Alfa Laval Corporate AB
    Inventor: Bent Madsen
  • Publication number: 20110039680
    Abstract: The centrifugal separator comprises a rotatable bowl having a separation chamber defined by a base. The base comprises a first outlet opening defined by a weir at a first level. An outlet chamber communicates with the separation chamber through a first outlet opening. The outlet chamber is connected with an outlet opening, which opens at a second level below the first level into an exterior of the bowl. The outlet chamber outlet opening is provided with an outlet nozzle with an outlet direction opposite the direction of rotation, and an overflow inlet opening is present in the outlet chamber, and is placed at a third level between the first and the second level. The overflow inlet opening communicates with an overflow outlet opening, that opens into the exterior of the bowl.
    Type: Application
    Filed: April 15, 2009
    Publication date: February 17, 2011
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Bent Madsen
  • Publication number: 20100167901
    Abstract: A centrifugal separator (1) comprises a bowl (2) rotating in use around an axis of rotation (5). The axis of rotation extends in a longitudinal direction of said bowl, and a radial direction (5a) extends perpendicular to the longitudinal direction. A base plate (6) is provided at one longitudinal end of the bowl, said base plate having an internal side (7) and an external side (8), an outlet opening (9) being provided in the base plate. A casing (33) is projecting at the outlet opening on the external side of said base plate, said casing comprising a casing side (34), a normal (35) to said casing side extending at an acute angle (13) relative to a circumferential direction of the bowl at said casing and a discharge opening (36) is provided in said casing side. The discharge opening is radially outwardly limited by a weir (45) with an overflow edge (39) and said discharge opening extending radially inwardly to a position above a highest intended level of liquid in the bowl.
    Type: Application
    Filed: May 8, 2008
    Publication date: July 1, 2010
    Applicant: ALFA LAVAL CORPORATE AB
    Inventors: Bent Madsen, Klaus Dircks
  • Patent number: 7156801
    Abstract: The decanter centrifuge comprises a screw conveyor having a body (4), which carries a screw comprising one or more flights (7, 7?) and having a nominal transport speed varying along the longitudinal axis. An inlet (6) is provided in the screw conveyor for the material to be separated. The screw conveyor is provided with a baffle (8, 8?) dividing the separation chamber in a substantially cylindrical separation part (17) and an at least partially conical discharge part (18). Immediately upstream of the baffle (8, 8?) a transition part (19) is provided between the separation part (17) and the discharge part (18), the screw conveyor (3) having a bigger nominal transport speed in the transition part (19) than in the separation part (17) immediately before the transition part (19), the change of the nominal transport speed being established by a change (21) of the screw pitch.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: January 2, 2007
    Assignee: Alfa Laval Copenhagen A/S
    Inventors: Klaus Dircks, Bent Madsen
  • Publication number: 20050202950
    Abstract: The decanter centrifuge comprises a screw conveyor having a body (4), which carries a screw comprising one or more flights (7, 7?) and having a nominal transport speed varying along the longitudinal axis. An inlet (6) is provided in the screw conveyor for the material to be separated. The screw conveyor is provided with a baffle (8, 8?) dividing the separation chamber in a substantially cylindrical separation part (17) and an at least partially conical discharge part (18). Immediately upstream of the baffle (8, 8?) a transition part (19) is provided between the separation part (17) and the discharge part (18), the screw conveyor (3) having a bigger nominal transport speed in the transition part (19) than in the separation part (17) immediately before the transition part (19), the change of the nominal transport speed being established by a change (21) of the screw pitch.
    Type: Application
    Filed: April 9, 2003
    Publication date: September 15, 2005
    Inventors: Klaus Dircks, Bent Madsen
  • Patent number: 6024686
    Abstract: The decanter centrifuge has a bowl with a screw conveyor having a body (4) and a screw (7). Material to be separated into a light phase is supplied through inlet ports (6) in the body, and the heavy phase is discharged through discharge ports in the bowl at one end of the conveyor. Between the inlet ports and the discharge ports for the heavy phase, the body of the screw conveyor carries a baffle (8c), generally shaped as a radial rib which forms a helical surface turning in the same direction as the screw (7). Owing to its shape the baffle actively contributes to the transport of the heavy phase, and with retention of the same gap between the baffle and the inner surface of the bowl, the gap area can be increased by increasing the axial length of the baffle.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: February 15, 2000
    Assignee: Alfa Laval Separation A/S
    Inventor: Bent Madsen
  • Patent number: 6004255
    Abstract: In a decanter centrifuge, which comprises an outer drum (1) and an inner drum (5) concentric therewith, the two drums being rotatable at different speeds around a common center axis, the inner drum (5) carries several blades (6, 7) arranged to convey axially in the outer drum (1) sludge having settled on the inside of the drum. The blades (6, 7) are placed in parallel blade rows, each of which extends in a certain pitch along a first helical line (9, 10) around at least part of the center-axis. Each one of the blades extends along a second helical line (29c), which has a pitch opposite the pitch of the first helical line (9, 10). The distance between the rows of blades is substantially larger than the distance between two adjacent blades in one and the same row. Possibly, the inner drum may be provided with only a single row of blades.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: December 21, 1999
    Assignee: Alfa Laval Separation AB
    Inventor: Bent Madsen
  • Patent number: 5374234
    Abstract: A decanter centrifuge comprises a drum (1) with a conveyor (2) containing an inlet (4). The liquid to be separated flows in a jet centrally into the inlet (4) towards an end wall (11 ), at which the liquid is radially distributed and flows axially onwards towards the second end wall (13) through an area of the inlet (4) free of members imparting an angular velocity to the liquid. The inlet (4) is provided with inlet apertures (6) positioned on a radius larger than the radius to the overflow edge (9) at the liquid discharge. The design of the inlet (4) implies that the free liquid surface in the inlet during operation is drawn far towards the axis of the drum, thereby causing excess energy supplied to the liquid during acceleration to the angular velocity of the conveyor (2) to be dissipated in the comparatively thick liquid layer before the liquid discharges into the separation space (7) through the inlet apertures (6).
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: December 20, 1994
    Assignee: Alfa-Laval Separation A/S
    Inventor: Bent Madsen