Including Structure Located Within Bowl And Defining Axially-extending, Helical Flow Path Patents (Class 494/66)
  • Patent number: 9440245
    Abstract: 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: Grant
    Filed: February 15, 2013
    Date of Patent: September 13, 2016
    Assignees: ALFA LAVAL CORPORATE AB, SYNCRUDE CANADA LTD.
    Inventors: Leonard Borgström, Lasse Hurnasti, Daniel John Bulbuc, David Harold Childs, Thaddeus Eugene Kizior, Kevin Reid
  • Patent number: 9358554
    Abstract: A hermetic centrifugal separator includes a centrifuge rotor, which is arranged to rotate around a center axis and includes a casing which defines an inner separation space, a set of separation discs in the inner separation space, two or more channels which connect to the separation space and include one or more inlet channels for supply of a liquid mixture of components to be separated to the separation space and one or more outlet channels for discharge of a component. The separator includes a torque transmitting part around the center axis and fixedly connected to the centrifuge rotor and an outlet seal between the outlet channel and the rotating centrifuge rotor preventing entrainment of unwanted substances. The separator includes a pump arranged to provide pressure to feed the separated liquid through the outlet channel.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: June 7, 2016
    Assignee: Alfa Laval Corporate AB
    Inventors: Jouko Pitkämäki, Robert Sandblom
  • Publication number: 20150024921
    Abstract: 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: Application
    Filed: February 15, 2013
    Publication date: January 22, 2015
    Inventors: Leonard Borgström, Lasse Hurnasti, Daniel John Bulbuc, David Harold Childs, Thadeus Eugene Kizior
  • Publication number: 20140364297
    Abstract: A fully jacketed screw centrifuge includes a rotatable drum having a horizontally oriented rotational axis, a rotatable screw arranged in the drum, and at least one discharge opening oriented at an angle to the rotational axis of the fully jacketed screw centrifuge for discharging solid from the drum in the jacket of the drum. A collecting chamber for solid, which surrounds the drum that rotates during operation in some sections and which does not rotate during operation, is associated with the at least one discharge opening. At least one hose segment not circumferentially closed in the cross-section is arranged in the collecting chamber.
    Type: Application
    Filed: December 10, 2012
    Publication date: December 11, 2014
    Inventor: Stefan Terholsen
  • Patent number: 8328709
    Abstract: An apparatus for separating a fluid flow, the fluid flow comprising lighter and heavier fractions to be separated from each other, comprises a rotary centrifuge device (1), the lighter fractions being carried further on and the heavier fractions being carried through an outlet (5). The invention is characterized in that a spin-up assembly (17) is arranged upstream of the rotary centrifuge device (1), the spin-up assembly (17) being configured in such a manner that the fluid flow entering the rotating cylinder (1) is imparted a rotational movement, the rotational velocity of the cylinder (1) being adjustable so that the relative velocity difference between the rotating movement of the fluid flow and the rotational velocity of the centrifuge device (1) is optimal in terms of separation.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: December 11, 2012
    Assignee: Sinvent AS
    Inventors: Knut Halvard Bech, Karl Venås, Stein Tore Johansen
  • Patent number: 8226826
    Abstract: Disclosed is a disk based system for separating at least two types of particulates contained in a sample fluid. The system includes a disk-like carrier board and a magnetic attraction unit. The disk-like carrier board forms at least one flow channel structure, which includes an inner reservoir, at least one separation chamber, and at least one outer reservoir arranged in sequence from a geometric center of the disk-like carrier board to an outer circumferential rim of the disk-like carrier board. A method of separation carried out with the system includes introducing the sample fluid into the inner reservoir and then rotating the disk-like carrier board to induce a centrifugal force. The sample fluid contains particulates that are labeled with immunomagnetic beads and the labeled particulates are attracted by the magnetic force generated by the magnetic attraction unit to retain in the inner reservoir or the separation chamber.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: July 24, 2012
    Assignee: National Taiwan University
    Inventors: Andrew M. Wo, Chen-Lin Chen, Ken-Chao Chen, Yu-Cheng Pan
  • Patent number: 8101138
    Abstract: A centrifugal micro fluidic system and a centrifugal magnetic position control device used in the centrifugal micro fluidic system for controlling the position of magnetic beads are provided. The centrifugal micro fluidic system comprising, a rotatable platform; a micro fluidic structure which is disposed in the platform; and a plurality of objects which include functional groups on surfaces thereof so as to capture a target material from the fluid and carry the target material while being suspended in and separated from the fluid in the micro fluidic structure, wherein the movements of the objects are controlled by a force affecting the objects differently compared to the force's effect on the fluid. When the objects are made of a magnetic material, the force may be a magnetic force applied by the centrifugal magnetic position control device.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-gun Lee, Yoon-kyoung Cho, Beom-seok Lee, Jong-myeon Park
  • Publication number: 20110003677
    Abstract: A centrifuge for separating solid-liquid mixtures including: a rotating bowl having a head wall with at least one drain opening for clarified liquid, said bowl having a rotational axis; a weir plate fixed to the head wall of the bowl and rotating with bowl, wherein the weir plate is aligned with the at least one drain opening; a choke plate coupled to and rotating with the rotating bowl, the choke plate having surface axially aligned with the drain opening or the weir plate, wherein said choke plate is movable axially with respect to the head wall, and a gap having between the drain opening or the weir plate, wherein the gap has a radially inward inlet receiving the clarified liquid from the bowl and a radially outward outlet for discharging the clarified liquid from the bowl.
    Type: Application
    Filed: June 3, 2010
    Publication date: January 6, 2011
    Applicant: ANDRITZ S.A.S.
    Inventors: Gernot Krammer, Laurentiu Pasol, Jean-Marc Huyghe
  • Patent number: 7775963
    Abstract: A centrifugal separation rotor for an apparatus, which removes contaminants from a pumped liquid, such as engine lubricant, by rotating it about axis at high speed includes a separation and containment vessel that permit liquid to leave the vessel as fast as it can enter, so that a zone is defined adjacent a side wall that holds a volume of liquid less than the whole volume encompassed by the vessel walls and filled in conventional high speed separators. A divider wall surface is interrupted by a set of upstanding vanes, which extend along it and around the axle as a helix of such pitch as to form both collector vanes to guide liquid entering between the rotating vanes towards the transfer passage. Motor vanes receive one or more jets of liquid impinging thereon at a glancing angle to drive the rotor before being guided along the inlet zone.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: August 17, 2010
    Assignee: Mann+Hummel GmbH
    Inventors: Andrew Samways, Anthony W. Fell
  • Publication number: 20100167902
    Abstract: A screw centrifuge includes a drum having a rotor. The drum includes two axial ends and a horizontal axis of rotation. A screw is arranged in the drum and configured to rotate relative to the drum at a speed different from a rotation speed of the drum. A bearing device is located at each axial end of the drum and is configured to bear the drum. A plurality of spring elements are configured for sprung support of the drum on a frame and at least one of the plurality of spring elements is located at each axial end of the drum.
    Type: Application
    Filed: September 7, 2007
    Publication date: July 1, 2010
    Applicant: GEA WESTFALIA SEPARATOR GMBH
    Inventors: Martin Overberg, Stefanos Doudis, Stefan Terholsen, Helmut Figgener, Hans-Joachim Beyer
  • Patent number: 6939286
    Abstract: An imperforate bowl centrifuge for phase separation employing a rotatable outer cylinder having an interior wall with a plurality of indentations each with an orifice, and an outer wall with heavy phase waste routing channels leading from the orifices to a waste control valve. Separated heavy phase particles collect in the channels and flow by force of pressure, and exit through the waste control valve at one end of the outer cylinder when it is opened to release the waste. An outlet for the separated light phase fluid is disposed at another end of the outer cylinder. The channels in the outer wall may be axially or angularly disposed to force the separated heavy phase toward the waste control valve.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 6, 2005
    Assignee: Archon Technologies Inc.
    Inventor: Elman Dail Hurdlow
  • Publication number: 20030224920
    Abstract: A bowl assembly for a rotating machine includes a bowl mounted for rotation about an axis of rotation. A feed inlet or pipe is connected to the bowl for introducing a feed slurry into the bowl. The bowl also has a liquid-phase outlet. A flow guide member is disposed inside the bowl about the axis for guiding a liquid phase in an at least partially circumferential or annular path about the axis. The guide member has an outer edge spaced a predetermined distance from an inner surface of the bowl.
    Type: Application
    Filed: May 28, 2002
    Publication date: December 4, 2003
    Inventor: Woon-Fong Leung
  • Patent number: 6533713
    Abstract: The invention is an entrainment device for a centrifugal separator. The entrainment device is comprised of two axial delimiting surfaces. One axial delimiting surface turns axially towards and the other turns axially away form an inlet chamber outlet of the separator. The entrainment device permits extended periods of operation without clogging of inlet chamber.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: March 18, 2003
    Assignee: Alfa Laval AB
    Inventors: Leonard Borgstrom, Claes Goran Carlsson, Peter Franzen, Claes Inge, Torgny Lagerstedt, Hans Moberg, Stefan Szepessy, Mikael Sundstrom
  • Patent number: 6102843
    Abstract: A one-pass centrifuge separator for mixtures of two liquids which may also contain gas. The centrifuge uses separation zones on a rotor's inner wall to improve separation efficiency and minimize turbulent mixing. The zones consist of surface and interface vanes, and baffle plates to control flow at the fluid interface. The zones also retain an open concept to facilitate washing by cleaning fluids which are provided by nozzles installed on a stationary feedpipe mounted along the rotational axis of the centrifuge. A fluid accelerator gradually accelerates the fluid from the feedpipe to the inner wall of the rotor.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: August 15, 2000
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Lonny R. Kelley, Mark E. Ehrhardt, Mukhtiar S. Purewal, Jeffrey W. Frederick, Houston G. Wood, III, James P. Johnston
  • Patent number: 5935053
    Abstract: A fractionator includes a shaft attached to a drum which is positioned in a housing and which is rotatable about a substantially horizontal axis and has an inlet means for suspension and at least two outlets for fractions. The drum has a first end and a second end and includes at least two fluid tight walls surrounding the axis. The drum also extends in its longitudinal direction between the first end and the second end to define a fluid channel. The fluid channel extrends substantially parallel to the axis from the first end to the second end and continuously in a circumferential direction of at least 360.degree..
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: August 10, 1999
    Assignee: Kvaerner Pulping AS
    Inventors: Kent Strid, Rolf Oswaldson
  • Patent number: 5720716
    Abstract: An extracorporeal blood processing system is disclosed which includes a variety of novel components and which may be operated in accordance with a variety of novel methodologies. For instance, the system includes a graphical operator interface which directs the operator through various aspects of the apheresis procedure. Moreover, the system also includes a variety of features relating to loading a blood processing vessel into a blood processing channel and removing the same after completion of the procedure. Furthermore, the system also includes a variety of features relating to utilizing a blood priming of at least portions of the apheresis system in preparation for the procedure. In addition, the system includes a variety of features enhancing the performance of the apheresis system, including the interrelationship between the blood processing vessel and the blood processing vessel and the utilization of high packing factors for the procedure.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 24, 1998
    Assignee: Cobe Laboratories, Inc.
    Inventors: Jeffrey J. Blakeslee, Brian M. Holmes, Victor D. Dolecek
  • Patent number: 5156818
    Abstract: Hazardous radioactive waste is compacted and cast into safely handled monolithic castings having a radiation barrier wall completely enclosing the radioactive waste by centrifugal casting processes in which the barrier wall may be either a pre-formed shell transported to the jobsite or it may be formed by biaxial centrifugal casting and curing of the barrier wall in a mold. When a pre-formed shell is used, means are provided for thickening the radiation barrier if necessary by biaxial casting of additional barrier material inside of the shell. Castable radioactive material is cast inside the barrier wall before removal of the casting mold from the finished cast monolith. The cast monolith is supported for rotation as the mold is removed therefrom so that additional impact resisting and radiation barrier material can also easily be applied to the exterior surface monolith if radiation leakage exceeds tolerance levels.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: October 20, 1992
    Assignee: Alternative Technologies for Waste, Inc.
    Inventors: Frank Manchak, Jr., Frank Manchak, III
  • Patent number: 5043103
    Abstract: A casting containing toxic waste is made by centrifugally casting toxic waste in a pre-formed cage having heat conducting means therein. The casting is formed with suitable shielding materials selected as a function of the waste being cast. The finished casting contains passageways through which heat is removed. These passageways are oriented such that when two or more castings are stacked in abutment, the passageways of adjacent castings interconnect.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: August 27, 1991
    Inventors: Frank Manchak, Jr., Frank E. Manchak, II, Michael E. Manchak, Peter J. Manchak
  • Patent number: 5031522
    Abstract: The process for obtaining juice, especially apple juice, from a mash obtained by crushing cells is free of enzymatic or biochemical processing steps for removal of pectins and performs the juice extraction continuously. The fluid phase obtained from the mash in a continuous centrifugation process and the foam combined with pectin components floating on it are separated from each other, advantageously by a vibrating screen. This process and eventual subsequent downstream separation steps, including for example removal of residual cellulose fibrous fractions from the fluid phase by centrifugal decantation, must be completed before the reaction of pectin with oxygen begins. An apparatus for performing this process is also described.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: July 16, 1991
    Assignees: Krauss Maffei Aktiengesellschaft, Giorgio Bini
    Inventors: Berthold Brixel, Giorgio Bini
  • Patent number: 5008045
    Abstract: A casting containing toxic waste is made by centrifugally casting toxic waste in a pre-formed cage having heat conducting means therein. The casting is formed with suitable shielding materials selected as a function of the waste being cast. The finished casting may contain passageways through which heat is removed. These passageways are oriented such that when two or more castings are stacked in abutment, the passageways of adjacent castings interconnect. Also disclosed is a method and apparatus for forming castings of polygonal exterior cross section having a contaminant barrier wall of substantially uniform thickness so that the waste storage volume of the castings is maximized and so that the castings may be stacked and stored in honeycomb fashion in a respository to minimize dead storage space.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: April 16, 1991
    Assignee: Alternative Technologies for Waste, Inc.
    Inventors: Frank Manchak, Jr., Frank E. Manchak, II, Michael E. Manchak, Peter J. Manchak
  • Patent number: 4990265
    Abstract: A method of dewatering oil mud that occurs on board ships during the processing of heavy, diesel, and lubricating oils and consists of a mixture of water and mineral-oil residue that is intercepted on board and subjected to centrifuging. The liquids contaminated with mineral-oil residue that occur on board are collected in two separate containers. The liquids that contain heavy oil and diesel oil are conveyed to the first container and the liquids that contain lubricating oil are conveyed to the second container along with the water that occurs when the oils are processed. The contents of the containers are then conveyed sequentially to one and the same centrifuging device to concentrate the solids. The resulting liquid phases are subjected to separate further processing with on-board equipment, allowing complete disposal or further use of the liquids.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: February 5, 1991
    Assignee: Westfalia Separator AG
    Inventor: Aloys Tenthoff
  • Patent number: 4980090
    Abstract: Low-Level radioactive wastes and the like are identified by composition and segregated based on specific contaminants identified. The separated wastes are subsequently encapsulated in a centrifugal process prior to disposal. The wastes advantageously are subjected to heat prior to classification in order to remove any volatiles and hydrocarbons present.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: December 25, 1990
    Inventor: Frank Manchak, Jr.
  • Patent number: 4961722
    Abstract: A vertical centrifugal separator, for example of the type used to dry coal, is improved by splitting the frustoconical screen into two pieces and including access doors in the water shield surrounding the screen. The division of the screen is made horizontally, for example at a level of about 30 to 70 percent down from the top of the screen. This permits the separator to be serviced in a relatively short time, by replacing only the upper partial screen when holes are worn in it. This is feasible because most of the wear in these screens is confined to about the upper 30 percent of their height. If a screen support basket is used, it can be confine to the lower partial screen, so that it does not have to be removed in order to replace the upper partial screen.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: October 9, 1990
    Assignee: Guyan Machinery Co.
    Inventors: Jimmy Taylor, David L. Singleton, Stanley A. Skeens, Dennis R. Runyon
  • Patent number: 4897221
    Abstract: Low-level radioactive wastes and the like are identified by composition and segregated based on specific contaminants identified. The separated wastes are subsequently encapsulated in a centrifugal process prior to disposal. The wastes advantageously are subjected to heat prior to classification in order to remove any volatiles and hydrocarbons present.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: January 30, 1990
    Inventor: Frank Manchak, Jr.
  • Patent number: 4731182
    Abstract: A decanter centrifuge for separation of light and heavy phase material and composed of a rotatable bowl with discharge orifices for the different phases and containing a screw conveyor with a hub supporting helical flights defining a helical chamber divided into a separating zone and a discharging zone by a baffle connected between an adjacent pair of the flights and providing a restricted passageway between the zones, the baffle comprising a flap hinged to the hub so as to be closed under centrifugal force during operation of the centrifuge.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: March 15, 1988
    Assignee: Decanter Pty. Limited
    Inventor: Robert E. High
  • Patent number: 4729830
    Abstract: A solid-and-liquid separation device revolving at high speed, comprising a bowl having a screw therein, said bowl being formed with cylindrical and canted sections, thereby permitting separation of a fluid containing solids into light and heavy liquids and solids.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: March 8, 1988
    Assignee: Kotobuki Iron Works, Ltd.
    Inventor: Souroku Suzuki
  • Patent number: 4387848
    Abstract: An improved centrifuge assembly comprising a channeled rotor assembly and a fluid container disposed in the channel, whereby the centrifugal separation effects in the fluid container are determined by the geometry of the channel in the rotor. This arrangement is particularly useful for two-stage blood platelet separation. The fluid container is preferably formed from semirigid plastic material and is considered a disposable item to be discarded after a single use. The rotary assembly preferably includes a removable filler piece or center piece formed from a single piece of material, such as rigid plastic, as by machining or molding, and having therein an open-topped channel having dimensions appropriate to receive the semirigid container, which is suitably curved and placed in the channel. Fluid connections are provided from each end of the container and an intermediate point to an axially located multichannel rotating seal. The connections lie in a plurality of radial slots in the filler piece.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: June 14, 1983
    Assignee: International Business Machines Corporation
    Inventors: Robert M. Kellogg, Alfred P. Mulzet
  • Patent number: 4386730
    Abstract: A centrifuge assembly useful for two stage blood platelet separation by counterflow comprising a channeled rotor assembly and a fluid container disposed in the channel, whereby the centrifugal separation effects in the fluid container are determined by the geometry of the channel in thr rotor. The fluid container is preferably formed from semirigid plastic material and is considered a disposable item, discarded after a single use. The rotor assembly preferably includes a removable filler piece or center piece formed from a single piece of material and having therein an open-topped channel having dimensions appropriate to receive the semirigid container, which is suitably curved and placed in the channel. Fluid connections are provided from a multi-chambered cavity attached to the ends of the container to an axially located multichannel rotating seal.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: June 7, 1983
    Assignee: International Business Machines Corporation
    Inventor: Alfred P. Mulzet