Driven By Energy Of Material Supplied Patents (Class 494/49)
  • Patent number: 9216423
    Abstract: The present invention relates to a separator and more specifically, but not exclusively, to a centrifugal separator for the cleaning of a gaseous fluid. A centrifugal separator is provided as comprising a housing defining an inner space, and a rotor assembly for imparting a rotary motion onto a mixture of substances to be separated. The rotor assembly is located in said inner space and is rotatable about an axis relative to the housing. The rotor assembly comprises an inlet for receiving said mixture of substances, an outlet from which said substances are ejected from the rotor assembly during use, and a flow path for providing fluid communication between the inlet and outlet, wherein the outlet is positioned more radially outward from said axis than the inlet.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: December 22, 2015
    Assignee: Alfa Laval Corporate AB
    Inventor: Thomas Eliasson
  • Patent number: 9028389
    Abstract: A separation cone (30) is mounted into the interior chamber of a centrifugal separator rotor (10), which comprises a cover (14) releasably connected to a base (16), in order to provide a frusto-conical wall subdividing the chamber into upper and lower regions. This slows the passage of fluid from the upper to the lower region, which takes place via openings (24) and/or via a gap between the inner rim (32) of the cone (30) and the axial inlet tube (12). The separation cone (30) is connected to the cover (14) by a releasable snap fit arrangement, such as by deflectable tabs (38) around the periphery of the separation cone (30) engaging into a groove (15) around the interior surface adjacent a lower edge of the cover (14). This allows there to be a predetermined sequence of servicing operations and ensures that the separation cone (30) will reliably stay with the cover (14) when the cover is removed.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: May 12, 2015
    Assignee: Mann+Hummel GmbH
    Inventors: Klemens Dworatzek, John Lawrence Mills, Nigel Burford, Anthony W. Fell, Nicholas Foulkes
  • Patent number: 8778191
    Abstract: The invention concerns a centrifugal filtering device for filtering a fluid. The device comprises a rotatable inner casing forming an inner space and a rotatable outer casing forming an outer space. The device further comprises a fluid inlet, at least one filter and drive means. The drive means is configured to rotate the inner casing to create a centrifugal pressure. The pressure forces a part of the fluid contained in the inner space through the filter and to a radially outer position of the outer space. The filtered fluid forms a filtrate, the filtrate having a kinetic energy. The outer casing is configured to transport the filtrate from the radially outer position to a radially inner position of the outer space, permitting transfer of the kinetic energy from the filtrate to the outer casing, thereby permitting regaining of mechanical energy.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: July 15, 2014
    Assignee: Aqua Mundus AB
    Inventor: Fredrick Marelius
  • Patent number: 8540613
    Abstract: To enable centrifugal filtration of fluids which contain abrasive contaminant particles the rotor bearings (3) must be isolated from the fluid which passes into and through the rotor chamber (21). This is achieved by a design in which the spindle (4) is connected to the rotor so as to rotate in unison with the rotor (5, 6, 7) relative to the base (1). The bearings (3) for the spindle (4) are provided in a bearing housing (2) which is fixedly mounted to the base (1) and a sealing arrangement, preferably a spring-loaded axial seal (14, 15), is provided between the spindle (4) and the base (1) at a location below the bearings (3) in the bearing housing (2).
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 24, 2013
    Assignee: Mann +Hummel GmbH
    Inventors: Nigel Burford, Anthony W. Fell, Klemens Dworatzek, Nicholas Foulkes, John Lawrence Mills
  • Patent number: 8419932
    Abstract: A centrifuge operative in successive low speed and high speed modes serves to remove surface cooking oil from a continuous stream of fragile snack food products wherein the oil removal occurs in the high speed mode and products are discharged from the centrifuge with relatively low kinetic energy in the low speed mode.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: April 16, 2013
    Assignee: Heat and Control Inc.
    Inventors: John Silvester, Leopoldo Zarate Andrade
  • Patent number: 8376924
    Abstract: A shuttle valve (30) is provided in the axial bore (19) of a stationary spindle (11) through which fluid is supplied to a rotor (12) of a centrifugal separator to close off the fluid outlets (23, 24) to the rotor (12) automatically upon removal of the cap (27) or cover assembly (20) in the event that fluid supply has not been switched off.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: February 19, 2013
    Assignee: Mann + Hummel GmbH
    Inventors: Nigel Burford, Klemens Dworatzek, Anthony W. Fell, John Lawrence Mills, Nicholas Foulkes
  • 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: 8323168
    Abstract: The invention describes a self-powered centrifugal separator comprising a base, a rotor mounted on an operably substantially vertical axis for rotation thereabout by reaction to fluid emission from rotor nozzles therein, a housing mounted on the base and enclosing the rotor, a sump formed in the base below the rotor, a fluid passageway through the base extending from an inlet port to an outlet port and including a diversion port to supply fluid to the interior of the rotor by way of the rotation axis, a drain passage in the base for draining fluid from the sump to the fluid passageway, and a venturi arrangement provided in the fluid passageway in the base to develop suction pressure to draw fluid from the drainage passage into the fluid passageway, whereas a spring loaded valve body is provided in the fluid passageway, said body being configured and arranged to shut off supply of fluid to the interior of the rotor when pressure of fluid entering the inlet port falls below a predetermined minimum pressure valu
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: December 4, 2012
    Assignee: Mann+Hummel GmbH
    Inventors: Sebastian Naegelen, Klemens Dworatzek, Anthony W. Fell, John Lawrence Mills, Nigel Burford
  • Publication number: 20110281715
    Abstract: A shuttle valve (30) is provided in the axial bore (19) of a stationary spindle (11) through which fluid is supplied to a rotor (12) of a centrifugal separator to close off the fluid outlets (23, 24) to the rotor (12) automatically upon removal of the cap (27) or cover assembly (20) in the event that fluid supply has not been switched off.
    Type: Application
    Filed: July 29, 2011
    Publication date: November 17, 2011
    Applicant: MANN+HUMMEL GMBH
    Inventors: Nigel Burford, Klemens Dworatzek, Anthony W. Fell, John Lawrence Mills, Nicholas Foulkes
  • Patent number: 8043201
    Abstract: Centrifuges, in particular for a lubricant oil in an internal combustion engine, are provided with a housing which comprises a base, a lid forming the second part of the housing and connectable to the base and a rotor arrangeable in the housing. Each centrifuge is embodied in the form of a modular unit which is assembled with the aid of modular system parts, wherein the modular system comprises different bases, and/or different lids and/or different rotors which can be assembled in the form of different combinations in such a way that different centrifuges are obtained.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: October 25, 2011
    Assignee: Hengst GmbH & Co. KG
    Inventor: Dieter Baumann
  • Patent number: 8021290
    Abstract: A centrifuge is employed to continuously remove particulates from a fluid. In one embodiment, the centrifuge removes small particles of soot from lubricating oil of diesel engines. The fluid is introduced into the centrifuge through a distribution rotor so that vortexes are not propagated in the fluid. Laminar flow of the fluid down the sides of the outer rotor may contribute to the soot-removal effectiveness of the centrifuge.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: September 20, 2011
    Assignee: Honeywell International Inc.
    Inventors: Vipul P. Patel, Allen K. MacKnight, Steven R. Eccles, Leonard Walitt
  • Patent number: 8002690
    Abstract: A rotor for a centrifuge (1), wherein the rotor is rotatably driven about a rotation axis and includes two parts, i.e., a central bearing part and a waste collecting part which is provided with a waste collecting area. The waste collecting part is separable from the bearing part for waste disposal or cleaning. The bearing part and waste collecting part are provided with torque transmitting surfaces which interact with each other in a form-fitting and/or adherence manner and are connectable by axially positioning the waste collecting part on the bearing part and disconnectable by axially removing the waste collecting part from the bearing part.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: August 23, 2011
    Assignee: Hengst GmbH & Co. KG
    Inventors: Karl Grosse Wiesmann, Uwe Meinig
  • Patent number: 7959546
    Abstract: A centrifuge is employed to continuously remove particulates from a fluid. In one embodiment, the centrifuge removes small particles of soot from lubricating oil of large diesel engines. The fluid in introduced into the centrifuge through an inducer so that vortexes are not propagated in the fluid. Flow constrainers and flow straighteners maintain laminar flow of the fluid as it passes axially through the centrifuge. An exducer decelerates the fluid prior to its exit from the centrifuge. The exducer thus contributes to maintaining laminar flow conditions. Laminar flow may contribute to the soot-removal effectiveness of the centrifuge.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 14, 2011
    Assignee: Honeywell International Inc.
    Inventors: Vipul P. Patel, Allen K. MacKnight
  • Patent number: 7959547
    Abstract: The invention relates to a centrifuge for the cleaning of a liquid, in particular a lubricant oil of an internal combustion engine. Said centrifuge comprises a housing, at least one bearing element on the housing side and a rotor which is rotatably mounted thereon. The rotor is composed of at least two parts, an inner part for accommodating the bearing and a part for retaining impurities in an impurity collection zone, wherein said part may be detached from the inner part for maintenance of the centrifuge. The centrifuge is characterized in that the/each bearing element is an element composed of a first bearing material and comprises one or more first smooth bearing surfaces. The inner part, embodied as a single piece, is made of a second bearing material and provided with one or more second smooth bearing surfaces. First and second bearing surfaces cooperate directly among each other, and the first and second bearing materials form a pair of smooth bearing materials.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: June 14, 2011
    Assignee: Hengst GmbH & Co., KG
    Inventors: Dieter Baumann, Uwe Meinig
  • Patent number: 7938874
    Abstract: A system and method for supplying clean dry gas to gas seals of a compressor. The system uses a rotary separator magnetically coupled to a source of rotational power, along with a gas stream cooling unit configured to condensate liquids out of a wet gas stream before the wet gas stream is supplied to the rotating separator. The system may further include a gas stream pressure booster, a heating unit to heat a dry gas stream generated by the rotary separator, and a controlled recirculation loop configured to continually recirculate the wet gas through the driven rotary separator until a desired amount of condensates are removed from the wet gas stream.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: May 10, 2011
    Assignee: Dresser-Rand Company
    Inventor: Philippe Auber
  • Patent number: 7871364
    Abstract: A centrifuge includes a housing that defines a fluid inlet port to supply fluid to the centrifuge and an axle cavity fluidly coupled to the fluid inlet port. A bearing is received in the axle cavity. A check valve is disposed in the axle cavity to minimize tampering, and the check valve is configured to control flow of the fluid from the inlet port. A rotor is configured to separate particulate matter from the fluid. The rotor includes an axle rotatably received in the bearing, and the axle defines a fluid passage to supply the fluid to the rotor. The check valve is normally biased towards a closed position where the flow of the fluid is shutoff. The axle is configured to open the check valve when the axle is received in the bearing.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: January 18, 2011
    Assignee: Fleetguard, Inc.
    Inventor: Peter K. Herman
  • Patent number: 7867158
    Abstract: The invention relates to a device for separating impurities from the lubricating oil of an internal combustion engine. The device comprises a filter insert on the bottom and a centrifuge thereabove that is provided with a rotor which is driven by means of penetrating lubricating oil. The filter insert and the centrifuge are disposed on top of each other in a common two piece housing that is closed during operation of the device and encompasses a removable top screw cap and a fixed bottom housing part. A removable intermediate lid is positioned between the filter insert and the centrifuge within the housing. The centrifuge, the intermediate lid, and the filter insert can be removed from the housing in the open state thereof. Furthermore, the screw cap and the intermediate lid of the device are provided with detachable connecting members which engage with each other and transmit axial tractive forces or axial tractive and compressive forces.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: January 11, 2011
    Assignee: Hengst GmbH & Co. KG
    Inventor: Dieter Baumann
  • 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: 20100160136
    Abstract: Centrifugal separators and related methods and devices are described. More particularly, centrifugal separators comprising a first fluid supply fitting configured to deliver fluid into a longitudinal fluid passage of a rotor shaft and a second fluid supply fitting sized and configured to sealingly couple with the first fluid supply fitting are described. Also, centrifugal separator systems comprising a manifold having a drain fitting and a cleaning fluid supply fitting are described, wherein the manifold is coupled to a movable member of a support assembly. Additionally, methods of cleaning centrifugal separators are described.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Applicant: Battelle Energy Alliance, LLC
    Inventors: David H. Meikrantz, Jack D. Law, Troy G. Gam, Lawrence L. Macaluso, Terry A. Todd
  • Patent number: 7713185
    Abstract: A free-jet centrifuge for the cleaning of lubricating oil comprising, a housing with a removable cover, a rotor rotatably arranged in the housing and with channels for feeding and removing the lubricating oil. The rotor is of split design with a drive part and a dirt trapping part which can each be flowed through by their own partial lubricating oil flow and which are designed with a torque transmission device which is engageable and disengageable. The dirt trapping part is separable from the drive part. A device is provided to prevent or restrict the axial mobility of the dirt trapping part relative to the drive part, which is ineffective or detachable when the cover is removed. The drive part extends from the bottom towards the top into the dirt trapping part or entirely through it. The drive part comprises all parts serving for the rotatable bearing of the rotor and the drive part is securely positioned against axial removal with an opened cover.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 11, 2010
    Assignee: Hengst GmbH & Co., KG
    Inventors: Dieter Baumann, Karl Grosse Wiesmann, Norbert Prinz
  • Patent number: 7674376
    Abstract: A centrifuge includes a rotor with one or more drive jet openings for rotating the rotor to separate particulate matter from a fluid. A filter element is disposed inside the rotor, and the filter element includes depth filter medium for removing from the fluid sticky contaminants having the same general density as the fluid, such as sludge or varnish compounds. The rotor has a split flow configuration in which a portion of the fluid is routed to the filter element and the rest of the fluid bypasses the filter element to maintain fluid pressure of the fluid discharged from the drive jet openings. In one form, the depth filter medium is impregnated with a chemical that changes a property of the fluid, like acidity. In another form, the depth filter material is contained in a capsule for easy disposal.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: March 9, 2010
    Assignee: Cummins Filtration IP Inc.
    Inventors: Peter K. Herman, Hendrik N. Amirkhanian, Lee Currier
  • Patent number: 7611451
    Abstract: A filtration centrifuge according to a typical embodiment of the present invention includes a housing canister, a rotor assembly, a rotor shaft, a top cap, and a bottom cap. In an alternative embodiment of the present invention, the rotor assembly mounts into the canister without the use of a rotor shaft. The canister is open at both ends and the manner of connection between the top and bottom of the canister and the top and bottom caps includes all possible combinations of internal threads, external threads, and a bayonet connection.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: November 3, 2009
    Assignee: Cummins Filtration IP Inc.
    Inventors: Jared Gwin, Hendrik N. Amirkhanian, Erica C. Clark
  • Patent number: 7597658
    Abstract: A rotor (10) for a centrifugal separator (12) for circulated engine lubricant formed by end walls (44, 46) and radially outer and inner side walls (42, 52) that define a separation and containment region (82). Wall (52) is defined by a tubular tension member (50) that surrounds a rotation axis (30) and extends between and through the end walls to keep them in position. Mounted within first and second ends (72, 74) of the tubular tension member are respective first and second end closure plugs (86, 88). Plug (88) has a passage (90) to admit liquid into the tubular member, but otherwise each plug is seated to inhibit passage of liquid from the member end. Each plug comprises a body seated by interference fit and an integral axially extending component (86?, 88?) that forms a mounting pin for mounting the rotor within bearing parts (24, 28) of the housing.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: October 6, 2009
    Assignee: Mann & Hummel GmbH
    Inventors: Andrew Samways, Andy Collins, Brian Harrison, Anthony W. Fell, Martyn Congram, Stuart Percy, John Lawrence Mills, Adrian Day, Martin Weindorf
  • Patent number: 7566294
    Abstract: A removable, spiral vane insert for receipt by a centrifuge rotor enclosure includes a unitary, molded plastic spiral vane portion including a spiral vane module and a baseplate that are all integrally joined together. The spiral vane portion further includes a tubular sleeve having a longitudinal axis corresponding to the axis of rotation for the rotor.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: July 28, 2009
    Assignee: Cummins Filtration IP Inc.
    Inventors: Hendrik N. Amirkhanian, Peter K. Herman, Jessil Joseph, Gerard Malgorn, Jean-Luc Guichaoua, Benoit LeRoux
  • Patent number: 7553271
    Abstract: The invention relates to a rotor for a centrifuge for cleaning a liquid, in particular the lubricating oil of an internal combustion engine, wherein the rotor is designed in two parts, namely, on the one hand, a drive part and, on the other hand, a dirt-collecting part comprising a dirt collection area, wherein the dirt-collecting part can be connected to the drive part to the rotor, and wherein the dirt-collecting part can be detached, for disposal or cleaning, by being pulled off axially from the drive part.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: June 30, 2009
    Assignee: Hengst GmbH & Co. KG
    Inventor: Karl Grosse Wiesmann
  • Publication number: 20090118111
    Abstract: A free-jet centrifuge for the cleaning of lubricating oil comprising, a housing with a removable cover, a rotor rotatable arranged in the housing and with channels for feeding and removing the lubricating oil. The rotor is of split design with a drive part and a dirt trapping part which can each be flowed through by their own partial lubricating oil flow and which are designed with torque transmission means which are engageable and disengageable. The dirt trapping part is separable from the drive part. Means are provided to prevent or restrict the axial mobility of the dirt trapping part relative to the drive part, which are ineffective or detachable when the cover is removed. The drive part extends from the bottom towards the top into the dirt trapping part or entirely through it. The drive part comprises all parts serving for the rotatable bearing of the rotor and the drive part is securely positioned against axial removal with an opened cover.
    Type: Application
    Filed: March 16, 2005
    Publication date: May 7, 2009
    Inventors: Dieter Baumann, Karl Grosse Wiesmann, Norbert Prinz
  • Patent number: 7520996
    Abstract: The filter removes volatile, particulate and water-based contaminants from a fluid, such as lubricating oil, of a different density than the contaminants. The device has a cone shaped, jet-propelled, helical-spiral wiper rotor creating centrifugal forces that separate the volatile and heavier particulate matter. Ports in a base assembly facilitate removal of the separated contaminants. A settling tank with vertical grid filter minimizes turbulence for further separation of heavier particulate matter. A volatile tank with vertical grid filter and flow restrictor minimizes turbulence to allow volatiles to rise from the fluid. A filter tank filters out remaining particulate matter from the fluid. A combination of flow restrictors and baffles minimize cross-contamination, thereby maximizing purity of oil returned to the engine. The collection tanks are easily cleaned and reused. The compact design minimizes oil volume necessary for purification.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: April 21, 2009
    Inventor: Milton Charles Van Noland
  • Patent number: 7517944
    Abstract: Provided a process for producing a polycarbonate which comprises reacting an aqueous alkali solution of a dihydric phenol with phosgene in the presence of an organic solvent to produce a polycarbonate oligomer and subsequently polycondensing the oligomer, wherein an emulsion solution of a polycarbonate oligomer-containing organic solvent obtained in the polycarbonate oligomer production step is introduced into a coalescer to separate the emulsion solution into a polycarbonate oligomer-containing organic solvent phase and an aqueous phase, and the polycarbonate oligomer-containing organic solvent phase is subjected to polycondensation. Thus the emulsion solution of a polycarbonate oligomer-containing organic solvent obtained in the polycarbonate oligomer production step is efficiently separated to reduce the content of impurity-containing water in the oligomer for producing a polycarbonate having excellent quality and to a obtain wastewater having a low content of organic materials.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: April 14, 2009
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Noriyuki Kunishi, Eizo Saito
  • Patent number: 7407474
    Abstract: Apparatus (10) for cleaning fluids such as oils comprising an inlet (12) for fluid to be cleaned, a heating unit (21) for heating the fluid, a centrifugal cleaner (24), a vacuum dehydration unit (26), a holding tank (11) and a fluid outlet (40). A first valve (13) controls communication between a first pump (20) and the inlet (12) or holding tank (11) to pump fluid from the inlet (12) or holding tank (11) to the heating unit (21) for conveyance to the centrifugal cleaner (24), the outlet of which is connected to the vacuum dehydration unit (26) and a second valve (37) controls communication between a second pump (35) and tank (11) and outlet (40) to either enable fluid to be recirculated back to the tank (11) or supplied to the outlet (40).
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: August 5, 2008
    Assignee: Lubemaster Australia Ltd.
    Inventor: Robert Carrington Smith
  • Patent number: 7396325
    Abstract: The invention relates to a rotor for a centrifuge, in particular for purifying lubricating oil in an internal combustion engine, wherein said rotor is rotatably mounted in the centrifuge housing and is provided with an impurity trapping element, the rotor or the impurity trapping element thereof are made of a plastic material and remote deflecting baffles arranged in said impurity trapping element can be removed from the centrifuge housing.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: July 8, 2008
    Assignee: Hengst GmbH & Co. KG
    Inventors: Uwe Meinig, Dieter Baumann
  • Patent number: 7393317
    Abstract: A centrifuge includes a housing that defines a fluid inlet port to supply fluid to the centrifuge and an axle cavity fluidly coupled to the fluid inlet port. A bearing is received in the axle cavity. A check valve is disposed in the axle cavity to minimize tampering, and the check valve is configured to control flow of the fluid from the inlet port. A rotor is configured to separate particulate matter from the fluid. The rotor includes an axle rotatably received in the bearing, and the axle defines a fluid passage to supply the fluid to the rotor. The check valve is normally biased towards a closed position where the flow of the fluid is shutoff. The axle is configured to open the check valve when the axle is received in the bearing.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: July 1, 2008
    Assignee: Cummins Filtration IP, Inc.
    Inventor: Peter K. Herman
  • Patent number: 7377893
    Abstract: A centrifuge for the separation of particulate matter from a volume of fluid includes an outer housing, a rotational member extending through the outer housing, and a rotor assembled onto the rotational member for rotation relative to the rotational member and relative to the housing. The centrifuge is constructed and arranged to enable self-driven rotation by the exit flow of fluid through jet nozzle openings defined by the rotor. The rotational member includes a fluid passageway and an exit opening for delivering fluid to the rotor. The rotor includes a divider plate that separates the interior of the rotor into a collection chamber and a separate jet zone. The collection chamber has a single fluid entry location defined by the divider plate for processing a single batch of fluid at a time.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: May 27, 2008
    Assignee: Fleetguard, Inc.
    Inventors: Peter K. Herman, Hendrik N. Amirkhanian
  • Patent number: 7297098
    Abstract: A rotor (40) for a centrifugal separator (20) used for separating solid contaminants from pressurized engine lubricant, is driven by pressure of the lubricant, a portion of which is directed to, and expelled from rotor nozzles (88). The rotor comprises an open-type vessel (42), which in operation is only partially filled with liquid as an annular layer whose radial thickness is determined by outlet passages (721 etc). The rotor is formed from a cap (62), an annular cup-like component (60) with a tubular wall (50) that in use surrounds a spindle and defines an inlet region (66) for pressurized liquid, and a drive member (84) having nozzles (88). The cap and cup-like component are individually molded from synthetic resin and joined to form a vessel (40). Inlet region (66) is connected to the cup by transfer passage (70).
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: November 20, 2007
    Assignee: Mann & Hummel GmbH
    Inventor: Anthony Fell
  • Patent number: 7288202
    Abstract: A separator and method according to which substances having relatively high densities are separated from a pressurized flow stream.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: October 30, 2007
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 7241392
    Abstract: A separator and method according to which substances having relatively high densities are separated from a pressurized flow stream.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: July 10, 2007
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 7189197
    Abstract: A centrifuge for separating out particulate matter from a fluid includes a rotor shell that is rotatably coupled to a shaft through a first bushing and a second bushing. The shaft includes a first shaft section that is detachably coupled to a second shaft section in order to make maintenance and assembly of the centrifuge easier by reducing the shaft clearance needed during disassembly and assembly of the centrifuge. The first shaft section includes a first bushing race around which the first bushing is rotatably received. The second shaft section includes an integrally formed bushing collar for supporting the second bushing and a second bushing race around which the second bushing is rotatably received. With such a construction, the size of the bushings in the centrifuge can be minimized, which in turn increases the operational speed of the centrifuge, thereby enhancing the particulate removal efficiency in the centrifuge.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: March 13, 2007
    Assignee: Fleetguard, Inc.
    Inventors: Carey A. Curt, Hendrik N. Amirkhanian
  • Patent number: 7182724
    Abstract: A disposable, all-plastic centrifuge rotor for fluid processing includes a unitary, molded plastic upper rotor portion that includes a rotor shaft spud. A unitary, molded plastic lower rotor portion is provided and is joined to the upper rotor portion so as to define a hollow rotor interior. Positioned within the hollow rotor interior is a unitary baseplate that is joined to the lower rotor portion and includes a rotor shaft spud. The rotor shaft spud of the unitary baseplate extends through the lower rotor portion and beyond the lower rotor portion and is coaxial with the rotor shaft spud of the upper rotor portion. A spiral vane element is positioned in the rotor interior and is captured between the upper rotor portion and the baseplate for fluid processing as the centrifuge rotor rotates at a high RPM rate.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: February 27, 2007
    Assignee: Fleetguard, Inc.
    Inventor: Kevin C. South
  • Patent number: 7081206
    Abstract: The filter removes volatile, particulate and water-based contaminants from a fluid, such as lubricating oil, of a different density than the contaminants. The device has a cone shaped, jet-propelled, helical-spiral wiper rotor creating centrifugal forces that separate the volatile and heavier particulate matter. Ports in a base assembly facilitate removal of the separated contaminants. A settling tank with vertical grid filter minimizes turbulence for further separation of heavier particulate matter. A volatile tank with vertical grid filter and flow restrictor minimizes turbulence to allow volatiles to rise from the fluid. A filter tank filters out remaining particulate matter from the fluid. A combination of flow restrictors and baffles minimize cross-contamination, thereby maximizing purity of oil returned to the engine. The collection tanks are easily cleaned and reused. The compact design minimizes oil volume necessary for purification.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: July 25, 2006
    Assignee: Investors Precision Manufacturing, Inc.
    Inventor: Milton Charles Van Noland
  • Patent number: 6984200
    Abstract: A centrifugal separator 110 (FIG. 1) for removing contaminants from a pumped liquid such as engine lubricant, having a separation rotor 130 rotatable about axis 124 at high speed by a jet 178 of the liquid impinging upon impulse turbine blades 174. The rotor includes a separation and containment vessel 132 having impervious side wall 134 spaced from the rotation axis and at least one end wall 138 open at 142 permit liquid to leave the vessel as fast as it can enter, so that a zone 140 is defined adjacent side wall 134 that holds a volume of liquid much less than the whole volume encompassed by the vessel walls and filled in conventional high speed separators. Lower inertia and reduced pressure gradients in the liquid permit it to be spaced further from the axis than is conventional, with improved separation efficiency.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: January 10, 2006
    Assignee: Mann & Hummel GmbH
    Inventor: Andrew Leonard Samways
  • Patent number: 6974408
    Abstract: A centrifuge for the purification of lubricating oil of an internal-combustion engine is provided which includes a housing with a removable cover, a housing-fixed shaft arranged in the housing and a centrifuge rotor which is rotatably mounted on the shaft and is replaceable. The shaft is hollow at least in its lower part and forms in its hollow inside a section of a lubricating oil supply canal, which canal is in flow connection with an inside of the centrifuge rotor mounted on the shaft over at least one orifice opening. The centrifuge also includes an adjustable valve plug arranged at the shaft and arranged to be held in an open position by the centrifuge rotor. The valve plug releases the orifice opening in the open position. The valve plug is also arranged to be transferred into a closing position and held in the closing position by a force created by at least one of a pressure of the lubricating oil and by a preloading component if the centrifuge rotor is missing.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: December 13, 2005
    Assignee: Hengst GmbH & Co. K.G.
    Inventor: Karl Grosse-Wiesmann
  • Patent number: 6929596
    Abstract: A rotor assembly for use as part of a centrifuge for the separation of particulate matter from a fluid includes a collection chamber housing a particulate separation mechanism and a drive chamber including a Hero turbine which assembles to the collection chamber and which is separable from the collection chamber. The interfit between the drive chamber and the collection chamber imparts any drive chamber rotation due to the Hero turbine directly to the collection chamber for rotation and for particulate separation. By making the drive chamber separable from the collection chamber, the collection chamber can be discarded with its accumulated sludge, allowing the drive chamber to be reused.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: August 16, 2005
    Assignee: Fleetguard, Inc.
    Inventors: Hendrik N. Amirkhanian, Kevin C. South, Peter K. Herman
  • Patent number: 6910998
    Abstract: The invention relates to a centrifuge provided with a blood bag system having an upper and lower outlet for separation of blood constituents, containing a rotor which can be driven in a rotative manner about a hub, wherein at least one conventional whole blood bag equipped with an upper outlet and with a lower outlet can be positioned vertically in this blood bag, while the whole blood bag can be arranged on the rotor in such a way that one outlet of the whole blood bag is bent in a radial direction, and the opposite outlet of the whole blood bag is bent in the other radial direction, so that the entire whole blood bag and the outlets thereof adopt an approximately Z- or S-shaped form in its functional position. In this case it is preferred that the upper outlet of the whole blood bag lie radially toward the interior and the lower outlet of the whole blood bag lie radially toward the exterior of the whole blood bag.
    Type: Grant
    Filed: December 8, 2001
    Date of Patent: June 28, 2005
    Assignee: Andreas Hettich GmbH & Co. KG
    Inventor: Günter Eberle
  • Patent number: 6893389
    Abstract: A centrifuge for separating particulate matter from a fluid includes a rotor assembly positioned within a centrifuge housing including a rotor housing. A driven gear is secured to a base portion of the rotor housing. A driving gear is integrally arranged with an impulse turbine. Rotary motion is imparted to the impulse turbine by a fluid stream from a jet nozzle. An alignment carrier provides a first post and spaced therefrom a second post, the first post including the jet nozzle. The driven gear is supported by the first post and the driving gear is assembled onto the second post. As fluid exits the nozzle under high pressure, it is directed at an annular ring of impulse turbine buckets, striking each bucket tangentially as the impulse turbine rotates.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: May 17, 2005
    Assignee: Fleetguard, Inc.
    Inventors: Kevin C. South, Peter K. Herman, Hendrik N. Amirkhanian, Byron A. Pardue
  • Patent number: 6884348
    Abstract: The invention relates to a module of units for an internal combustion engine, comprising, as first unit, a device for separating out contaminants from the lubricating oil in the internal combustion engine, whereby the device has a filter insert, a free-jet centrifuge, driven by means of the flowing lubricating oil, at least one supply channel for lubricating oil to be purified, an outlet channel, for lubricating oil which has flowed through the filter insert and a return channel for oil which has flowed through the centrifuge, whereby the centrifuge is arranged above the filter insert in a common housing. The novel module of units is characterized in that the module comprises a further unit of the internal combustion engine, the further unit, comprising a housing which is detachably connected to the housing of the device and that both housings form the return channel between housing regions, which contact each other in a sealing manner.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: April 26, 2005
    Assignee: Hengst GmbH & Co. KG
    Inventor: Dieter Baumann
  • Patent number: 6821241
    Abstract: A centrifuge for separating particulate matter from a fluid includes a housing having a base portion defining a fluid inlet, a rotor subassembly in the housing and including a centertube and a shaft. The shaft defines a plurality of fluid outlet ports and a fluid passageway in flow communication therewith. The fluid passageway communicates with the fluid inlet such that oil delivered to the centrifuge flows through a portion of the centrifuge shaft and exits from the fluid outlet ports. Press fit into the centertube is a baffle sleeve which is initially positioned so as to cover the fluid outlet ports when the baffle sleeve is in a first position. The baffle sleeve is movable with the rotor subassembly to a second position where the plurality of fluid outlet ports are uncovered.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: November 23, 2004
    Assignee: Fleetguard, Inc.
    Inventors: Peter K. Herman, Kevin C. South
  • Publication number: 20040214710
    Abstract: A centrifuge for separating particulate matter from circulating fluid includes a centrifuge enclosure including a housing and a base joined together so as to define a hollow interior. A rotor is positioned in the hollow interior and is supported by the base in a manner to permit rotary motion of the rotor relative to the centrifuge enclosure. A coalescing filter assembly is secured to the rotor and is constructed and arranged for removing oil aerosol from a blowby gas which is introduced into the centrifuge. A roller bearing, press fit into the centrifuge housing, receives a portion of the coalescing filter assembly.
    Type: Application
    Filed: April 23, 2003
    Publication date: October 28, 2004
    Inventors: Peter K. Herman, Gregory W. Hoverson, Hendrik N. Amikhanian, Jean-Luc Guichaoua, Benoit Le Roux, Gerard Malgorn
  • Patent number: 6793615
    Abstract: A fluid separation centrifuge for the separation of particulate matter from a flow of oil is designed with a disposable rotor assembly including a molded plastic rotor housing and a fluid separation device positioned within the rotor housing. Included as part of the fluid separation device is a unitary, molded plastic base plate which is designed and arranged with a peripheral lip formed with a channel portion therein. In a cooperating manner, the rotor housing is constructed and arranged with a molded plastic, generally cylindrical projection which is designed and arranged to receive the channel portion so as to create a fluid-tight, sealed interface at the location of contact between the projection and the channel portion.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: September 21, 2004
    Assignee: Fleetguard, Inc.
    Inventors: Kevin C. South, Peter K. Herman, Hendrik N. Amirkhanian, Ismail C. Bagci
  • Publication number: 20040157719
    Abstract: A rotor assembly for use as part of a centrifuge for the separation of particulate matter from a fluid includes a collection chamber housing a particulate separation mechanism and a drive chamber including a Hero turbine which assembles to the collection chamber and which is separable from the collection chamber. The interfit between the drive chamber and the collection chamber imparts any drive chamber rotation due to the Hero turbine directly to the collection chamber for rotation and for particulate separation. By making the drive chamber separable from the collection chamber, the collection chamber can be discarded with its accumulated sludge, allowing the drive chamber to be reused.
    Type: Application
    Filed: February 7, 2003
    Publication date: August 12, 2004
    Inventors: Hendrik N. Amirkhanian, Kevin C. South, Peter K. Herman
  • Patent number: RE38855
    Abstract: A centrifugal separtor for non-cohesive particulates, such as are found in transmission oils and hydraulic liquids, rather than the cohesive combustion products found within internal combustion engine lubricants, consists of a housing enclosing a vertical spindle on which spins a liquid reaction driven rotor container. The container is divided internally by inwardly extending partition wall into separate outflow chambers. Non-cohesive particulates which separate from the liquid, and are held against the peripheral side wall by centrigual force during rotation, slump therefrom in the absence of rotation and risk forming a slurry that gets carried to the outflow chamber.
    Type: Grant
    Filed: February 11, 1998
    Date of Patent: October 25, 2005
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Ian M. Cox, Andrew L. Samways
  • Patent number: RE39704
    Abstract: A self-powered centrifugal separator, for separating particulate contaminants from a liquid lubricant of an automobile engine, includes a rotor container rotatable about an axle to which it is journalled by bushes. When the engine is running, a film of pressurized liquid between the bushes and axle lubricates them and provides radial stiffness, but when the engine stops and liquid supply ceases, radial stiffness is reduced and the partially emptying container may vibrate and create wind-down noise. At least one bush, which normally provides a horizontal thrust bearing to support the weight of the container at low speed, has, with the axle portion it surrounds, a region tapering in diameter to center the container with respect to the axle and provide both radial and axial support.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: June 26, 2007
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventor: Ronald J. Purvey