EP2832448B1 - Centrifugeuse d'huile dotée d'un rotor de centrifugeuse - Google Patents

Centrifugeuse d'huile dotée d'un rotor de centrifugeuse Download PDF

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Publication number
EP2832448B1
EP2832448B1 EP14178737.4A EP14178737A EP2832448B1 EP 2832448 B1 EP2832448 B1 EP 2832448B1 EP 14178737 A EP14178737 A EP 14178737A EP 2832448 B1 EP2832448 B1 EP 2832448B1
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EP
European Patent Office
Prior art keywords
centrifuge rotor
oil
centrifuge
throttle point
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14178737.4A
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German (de)
English (en)
Other versions
EP2832448A1 (fr
Inventor
Peter Bauditsch
Martin Weindorf
Helmuth Haubenreich
Thomas Storch
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Mann and Hummel GmbH
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Mann and Hummel GmbH
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Filing date
Publication date
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Publication of EP2832448A1 publication Critical patent/EP2832448A1/fr
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Publication of EP2832448B1 publication Critical patent/EP2832448B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/005—Centrifugal separators or filters for fluid circulation systems, e.g. for lubricant oil circulation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/06—Fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/10—Control of the drive; Speed regulating

Definitions

  • the invention relates to an oil centrifuge with an integrated, rotatably mounted centrifuge rotor according to the preamble of claim 1.
  • the oil centrifuge can be used as an industrial oil centrifuge or in a motor vehicle.
  • the oil centrifuge can be part of an oil module which, in addition to the oil centrifuge, can have an oil filter with a filter element and a heat exchanger.
  • Such oil modules are used in particular in commercial vehicles.
  • the oil filter has a main flow filter and a secondary flow filter, through which the oil to be cleaned flows in succession.
  • the main flow filter comprises a ring filter insert in a housing pot, the secondary flow filter the centrifuge rotor, into which the oil is led from the clean side of the main flow filter via a fixed, rigid pipe to the centrifuge rotor.
  • a safety valve In the transition from the tube to the centrifuge rotor there is a safety valve which is moved into the blocking position if the centrifuge rotor is not arranged in its correct position.
  • the EP 1 217 183 A1 discloses a free jet centrifuge for cleaning the lubricating oil of an internal combustion engine and simultaneously cleaning the crankcase gases.
  • the rotor housing has an oil inlet, an oil outlet, a supply line for crankcase gases and a suction line for cleaned crankcase gases, the oil outlet and supply line being at least partially formed by a single connecting channel.
  • the supplied crankcase gas is led through a volume in which the oil mist generated by the drive nozzles of the rotor is located.
  • a centrifuge with a center tube and shaft is known, the shaft having a feed line with one or more fluid connections.
  • the center tube is provided with openings in two sections. Part of the fluid in the centrifuge bypasses cleaning and drives the centrifuge, while the remaining fluid flows through the centrifuge and is cleaned. The fluid is then diverted through nozzles to drive the centrifuge.
  • the DE 10 2006 021 033 A1 describes a centrifuge rotor detection device for oil supply interruption.
  • a housing part of the centrifuge has a fluid inlet channel in which a bearing and a check valve are received.
  • the rotor has a pin which opens the check valve when the pin is received in the bearing.
  • US 5,904,841 A discloses an oil centrifuge with an integrated, rotatably mounted centrifuge rotor, with an inflow tube to the centrifuge rotor, which defines at least a portion of the flow path of the oil to the centrifuge rotor.
  • the flow path here has a throttling point with a reduced cross section in the form of a Venturi nozzle, but this is not in the flow path to the centrifuge rotor, but in a branch line which leads away from the centrifuge rotor.
  • the invention is based on the object of designing an oil centrifuge with a centrifuge rotor for simple operation with a long service life.
  • the oil centrifuge according to the invention is used, for example, for oil cleaning in internal combustion engines and has a rotatably mounted centrifuge rotor, with the aid of which dirt particles in the oil can be separated off.
  • the oil centrifuge is preferably integrated in an oil circuit, which advantageously has an oil filter with a filter element, which is designed as a ring filter, for example, as a main flow filter for coarse separation, and, downstream of the main flow filter, the oil centrifuge with the centrifuge rotor, which forms the bypass filter for fine separation.
  • a partial amount of the oil filtered by the oil filter for example 10-20%, is fed to the oil centrifuge.
  • the oil centrifuge is arranged in a bypass to the main flow of the oil coming from the oil filter.
  • the oil enters the centrifuge rotor via an inflow tube which forms at least a section of the flow path for the oil in the oil centrifuge.
  • the flow path inside the oil centrifuge and in front of the centrifuge rotor has a throttle point with a reduced cross section, the cross section upstream of the throttle point being expanded.
  • the cross section is also expanded downstream of the throttle.
  • the inflow tube has the throttle point.
  • the throttle point is a constriction, which causes a pressure loss in the oil flow.
  • the throttling point dampens pressure peaks and thereby ensures an equalization of the oil pressure in the centrifuge rotor, which is thus relieved of the pressure peaks, which leads to a reduction in the load on the centrifuge rotor and to an increase in the rotor service life.
  • By slowly expanding the cross-section downstream of the throttle point the remaining pressure loss can be kept relatively low, so that on the one hand there is a sufficiently high pressure in the centrifuge rotor to contribute to a high rotational speed and thus support the particle separation, and on the other hand in the throttle point the pressure fluctuations are reduced, so that the peak load is also further reduced accordingly.
  • the throttle point is preferably designed in such a way that the flow cross section of the flow path gradually tapers and no sudden cross-sectional jumps occur.
  • the throttle point is designed according to the invention as a Laval nozzle.
  • the flow cross section gradually narrows to a narrow point and gradually widens behind the narrow point, the flow cross section always being circular.
  • the flow path upstream and downstream of the throttle point has the same cross section, so that there is only a reduction in cross section in the area of the throttle point, and the full inflow pipe cross section is otherwise retained.
  • the area of the throttling point it can be expedient that it has a diameter of at most 90%, in particular at most 70%, preferably at most 50% of the largest diameter of the inflow pipe. This reduction in diameter in the area of the throttle point ensures adequate damping of the pressure peaks.
  • the cross section downstream of the throttle point is smaller than upstream, that is to say at the beginning of the throttle point.
  • the throttle point is advantageously located in the inflow region of the oil centrifuge or the inflow pipe, with designs possibly also being considered in which the throttle point is arranged at a distance from the end faces or on the outflow-side region of the inflow pipe. In any case, however, the throttle point is located upstream of the outflow openings in the inflow tube to the centrifuge rotor.
  • the inflow tube can be non-rotatably connected to the centrifuge rotor, for example in the case of a one-piece design of the inflow tube and centrifuge rotor.
  • the inflow tube rotates with the centrifuge rotor, it being possible for the inflow tube to also be designed separately, but can be connected to the centrifuge rotor.
  • the inflow tube is arranged fixed to the housing and therefore does not rotate with the centrifuge rotor. Both in the case of an arrangement fixed to the housing and in the case of a rotating arrangement of the inflow tube on the centrifuge rotor side, it lies in the longitudinal axis of the centrifuge rotor.
  • valve in the inflow tube or upstream of the inflow tube.
  • the valve is advantageously arranged upstream of the throttle point.
  • the throttle point can also be arranged at another point relative to the valve, for example in the valve housing, preferably in the inlet area of the valve.
  • the valve has a safety function to prevent an undesired transfer of oil into the area of the centrifuge rotor.
  • the valve is designed as a safety valve, which is only in the open position when the centrifuge rotor is correctly installed in order to allow the oil to flow through the inflow tube.
  • a valve body of the safety valve is held in the open position by the centrifuge rotor. If, on the other hand, the centrifuge rotor is missing or is incorrectly installed, the valve body is transferred from the oil pressure from the open position to a closed position in which the oil flow is interrupted.
  • a valve device which comprises a pressure valve and a safety valve connected downstream of the pressure valve, the pressure valve only moving into the open position when a limit pressure of, for example, 2 bar is exceeded becomes.
  • the downstream safety valve is held in the open position by the centrifuge rotor as described above.
  • the pressure valve and the safety valve can form a structural unit, wherein the two valves can be formed separately, but are connected to one another.
  • the valve body of the safety valve is acted upon, for example, by an adjusting pin in the open position, which is formed in one piece with the centrifuge rotor.
  • the safety valve is designed, for example, as a ball valve; accordingly, the valve member is formed by a ball.
  • the throttle point can be arranged upstream of the valve device in an inlet section for the oil, if present, or downstream of the valve device in the inflow pipe.
  • Fig. 1 and Fig. 2 are exemplified oil centrifuges 1 with centrifuge rotor 3 for an internal combustion engine, in which the in Fig. 3 throttle point described in more detail can be used.
  • the throttling point can be introduced into the flow path to the centrifuge rotor 3 regardless of the number and design of valve devices which are likewise located in the flow path.
  • Fig. 1 an oil centrifuge 1 for an internal combustion engine is shown.
  • the oil centrifuge 1 is preferably introduced into an oil circuit with an oil filter.
  • the oil centrifuge 1 can be part of an oil module 2 which has the oil filter and the oil centrifuge 1 and can be designed, for example, as a die-cast part, in particular made of aluminum.
  • the oil centrifuge 1 with the centrifuge rotor 3 lies downstream of the oil filter in a bypass channel to a main flow channel for the oil pre-cleaned by the oil filter and is overlapped by a pot-like or lid-like housing component 4 which is connected to the oil module 2 or a housing base, for example screwed on ,
  • the centrifuge rotor 3 is rotatably supported relative to the oil module 2 or the housing base and the housing component 4 and can rotate about its longitudinal axis 5.
  • a pressure valve 6 and a safety valve 7 connected downstream of the pressure valve 6, which are designed as a coherent valve device.
  • the pressure valve 6 and the safety valve 7 are designed as separate components, which, however, are connected and connected to one another.
  • the two valves 6, 7 can also be formed in one piece with a common housing.
  • the pressure valve 6 is designed as a piston valve, the spring-loaded piston 8, which forms the valve member of the pressure valve 6, is urged into the closed position and is pressed by the oil on the clean side of the oil module 2 in the direction of the open position.
  • the piston 8 of the pressure valve 6 opens as soon as the pressure reaches a pressure threshold, for example 2 bar. The flow path through the upstream pressure valve 6 is then released.
  • the downstream safety valve 7 is placed directly on the housing of the pressure valve 6 and connected to it, for example screwed.
  • the safety valve 7 is designed as a ball valve, accordingly the valve body of the safety valve 7 is formed by a ball 9 which is adjustably received by the housing of the safety valve 7.
  • An adjusting pin 10 protrudes into the safety valve 7, which is formed in one piece with an inflow tube 11, which is an integral part of the centrifuge rotor 3 and extends centrally on the inside of the centrifuge rotor 3.
  • the adjusting pin 10 of the centrifuge rotor 3 protrudes into the outflow path of the safety valve 7 and keeps the ball 9 of the safety valve at a distance from its sealing seat, so that the flow path in the safety valve 7 is kept clear. If, on the other hand, the adjusting pin 10 is missing, for example when the centrifuge rotor 3 is not or incorrectly installed, the ball 9 is adjusted into its sealing position by the pressure of the oil brought in and thus closes the flow path.
  • the housing of the pressure valve 6 is screwed into the oil module 2.
  • the flow path through the valves 6 and 7 is coaxial to the longitudinal axis 5 of the oil centrifuge 1 and centrifuge rotor 3.
  • the safety valve 7 projects axially into the inflow tube 11, which is formed in one piece with the centrifuge rotor 3 and rotates together with the latter; the inflow pipe 11 is part of the flow path of the oil to the centrifuge rotor 3.
  • the flow path has a throttle point with a reduced flow cross section, the throttle point not being shown here for reasons of clarity.
  • the throttle point can be arranged at any point in the flow path to the centrifuge rotor 3, but in front of outlet openings in the inflow tube 11 for introducing the oil into the centrifuge rotor 3.
  • the throttle point can be arranged, for example, in the housing of the pressure valve 6 or the safety valve 7. However, the throttle point can also be introduced downstream of the valves 6 and 7 into the inflow pipe 11 or upstream of the valves 6 and 7 into the inlet section of the oil centrifuge 1. At least upstream of the throttle point, the diameter or flow cross section of the flow path is widened with respect to the throttle point.
  • An advantageous form of the throttle point is in Fig. 3 shown.
  • the centrifuge rotor 3 is rotatably supported via two axially spaced bearing points.
  • a first bearing point is located on the outside of the housing of the pressure valve 6 and is either, as in the left half of the figure Fig. 1 shown as a pair of plain bearings executed with two plain bearing bushes, of which the inner plain bearing bush is located on the wall of the housing of the pressure valve 6 and the outer plain bearing bush on the inside of the inflow tube 11 of the centrifuge rotor 3.
  • the plain bearing bushes can consist of different materials, for example a material pair of steel sintered bronze.
  • the storage location exists, as in the right half of the picture Fig.
  • This second bearing point is designed as a slide bearing 14 and has a slide bearing bush 15 that extends into the end face of the inflow tube 11 is inserted on the centrifuge rotor 3, and a bearing pin 16 which is held on the inside of the housing component 4 via a rubber damper 17 and projects into the slide bearing bush 15.
  • the bearing pin 16 is designed, for example, as a steel pin, the plain bearing bush 15 can consist of sintered bronze.
  • the flow path through the oil centrifuge 1 is shown with arrows.
  • the filtration takes place in the oil filter, from the clean side of which the oil is guided axially through the valve device with the pressure valve 6 and the safety valve 7 into the inflow tube of the centrifuge rotor 3.
  • both valves 6, 7 are open, the oil passes radially into the rotor chambers of the centrifuge rotor via outlet openings in the wall of the inflow tube 11, as shown by the arrows, where particles are separated.
  • the oil then flows axially downwards and can be discharged through outflow openings. Due to the oil pressure and with a corresponding design of the outflow openings, the centrifuge rotor rotates about its longitudinal axis 5.
  • the oil centrifuge 1 basically has the same structure as in Fig. 1 on.
  • the storage of the centrifuge rotor is different 3, which is designed as a flying storage.
  • a first bearing point between the pressure valve 6 and the end face of the inflow tube 11 of the centrifuge rotor 3 is analogous to Fig. 1 formed and can either be designed as a plain bearing 12 with two plain bearing bushes or as a ball bearing 13.
  • a second bearing point is located at a relatively small axial distance on the safety valve 7 and, like the first bearing point, is designed either as a sliding bearing 18 with two sliding bearing bushes, which can optionally consist of different materials, such as steel and sintered bronze, or as a ball bearing 19.
  • the bearing is carried out on the housing of the safety valve 7 and on the inner wall of the inflow tube 11, which is formed in one piece with the centrifuge rotor 3.
  • FIG. 3 An embodiment of a throttle point 23 is shown in the inflow tube 11 of the centrifuge rotor 3.
  • the inflow of the oil to the centrifuge rotor 3 takes place via the inflow tube 11, which has a tube section 21 which is formed in one piece with a bottom-side rotor component 31.
  • the inflow pipe 11 defines the flow path for the oil.
  • the rotor component 31 is located at the bottom of the centrifuge rotor 3 and is formed separately from an upper rotor part 32.
  • the bottom-side rotor component 31 is designed such that it cannot rotate with the upper rotor part 32 and rotates together with the latter about the longitudinal axis 5.
  • upper rotor part 32 and bottom-side rotor component 31 are welded together.
  • the centrifuge rotor 3 can also be formed in one piece.
  • the tube section 21, which is formed in one piece with the bottom-side rotor component 31, forms the first part of the inflow tube 11 for supplying the oil into the centrifuge rotor 3.
  • the tube section 21 Adjacent to the inflow region 22, which faces away from the centrifuge rotor 3, the tube section 21 is provided with a throttle point 23 which has a cross section which is reduced in comparison to the other cross sections.
  • the diameter of the throttle point 23 is identified by d D
  • the diameter of the pipe section 21 upstream and downstream of the throttle point 23 is d K
  • the throttle point diameter d D not exceeding 40% to 90% of the maximum diameter d K of the pipe section 21.
  • the throttle point diameter is between approximately 50% and approximately 60% of the maximum diameter d K.
  • the diameter d K of the pipe section 21 is the same size upstream and downstream of the throttle point 23.
  • the throttle point 23 is designed for example in the manner of a Laval nozzle and dampens pressure peaks, as a result of which the load on the centrifuge rotor 3 is reduced.
  • the throttle point 23 is located axially approximately centrally in the tube section 21, which is flanged on the end face to the portion of the inflow tube 11 which is formed in one piece with the rotor upper part 32.
  • the diameter of the inflow pipe 11 in front of and behind the throttle point 23 is different, the diameter being expanded at least upstream of the throttle point 23 compared to the throttle point diameter.
  • the centrifuge rotor 3 is rotatably supported in two bearings 24 and 25.
  • the first bearing point 24 is located on the tube section 21 of the bottom-side rotor component 31.
  • the second bearing point 25 is on the axially opposite side in the upper region of the centrifuge rotor 3;
  • the centrifuge rotor 3 is rotatably mounted on the housing component 4 via the second bearing point 25.

Landscapes

  • Centrifugal Separators (AREA)

Claims (13)

  1. Filtre à huile centrifuge avec rotor centrifuge (3) intégré et logé de manière rotative, ayant un tube d'afflux (11) menant au rotor centrifuge (3) et définissant au moins une section du flux de l'huile vers le rotor centrifuge (3), dans lequel le trajet de flux vers le rotor centrifuge (3) présente un point d'étranglement (23) avec une section réduite, dans lequel la section est élargie au moins en amont du point d'étranglement (23), caractérisé en ce que le point d'étranglement (23) est exécuté en tant que tuyère de Laval.
  2. Filtre à huile centrifuge selon la revendication 1, caractérisé en ce que la section est élargie en amont et en aval du point d'étranglement (23).
  3. Filtre à huile centrifuge selon la revendication 2, caractérisé en ce que le trajet de flux présente la même section en amont et en aval du point d'étranglement (23).
  4. Filtre à huile centrifuge selon l'une des revendications 1 à 3, caractérisé en ce que le point d'étranglement (23) est réalisé dans le tube d'afflux (11).
  5. Filtre à huile centrifuge selon l'une des revendications 1 à 4, caractérisé en ce que le point d'étranglement (23) se situe dans la zone d'afflux du filtre à huile centrifuge (1), notamment du tube d'afflux (11).
  6. Filtre à huile centrifuge selon l'une des revendications 1 à 5, caractérisé en ce que le diamètre du point d'étranglement (23) correspond à 90% au maximum, notamment à 70% au maximum, de préférence à 50% au maximum du diamètre maximum du trajet de flux.
  7. Filtre à huile centrifuge selon l'une des revendications 1 à 6, caractérisé en ce que le tube d'afflux (11) est relié de manière solidaire en rotation au rotor centrifuge (3).
  8. Filtre à huile centrifuge selon l'une des revendications 1 à 7, caractérisé en ce que le tube d'afflux (11) est réalisé d'un seul tenant avec le rotor centrifuge (3).
  9. Filtre à huile centrifuge selon l'une des revendications 1 à 8, caractérisé en ce qu'une soupape pénètre dans le tube d'afflux (11).
  10. Filtre à huile centrifuge selon la revendication 9, caractérisé en ce que la soupape est disposée en amont du point d'étranglement (23).
  11. Filtre à huile centrifuge selon la revendication 9 ou 10, caractérisé en ce que la soupape est exécutée en tant que soupape de sûreté (7) dont le corps de soupape est maintenu en position d'ouverture par le rotor centrifuge (3).
  12. Filtre à huile centrifuge selon l'une des revendications 1 à 11, caractérisé en ce qu'une soupape de refoulement (6) et une soupape de sûreté (7) montée en aval de la soupape de refoulement (6) sont disposées dans le trajet d'afflux vers le rotor centrifuge (3), dans lequel le corps de soupape de la soupape de sûreté (7) est maintenu en position d'ouverture par le rotor de centrifuge (3).
  13. Rotor centrifuge (3) pour un filtre à huile centrifuge, notamment selon l'une des revendications précédentes, ayant un tube d'afflux (11) menant au rotor centrifuge (3) et définissant au moins une section du flux de l'huile vers le rotor centrifuge (3), dans lequel le trajet de flux vers le rotor centrifuge (3) présente un point d'étranglement (23) avec une section réduite, dans lequel la section est élargie au moins en amont du point d'étranglement (23), caractérisé en ce que le point d'étranglement (23) est exécuté en tant que tuyère de Laval.
EP14178737.4A 2013-07-31 2014-07-28 Centrifugeuse d'huile dotée d'un rotor de centrifugeuse Active EP2832448B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013012673 2013-07-31

Publications (2)

Publication Number Publication Date
EP2832448A1 EP2832448A1 (fr) 2015-02-04
EP2832448B1 true EP2832448B1 (fr) 2020-01-01

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EP14178737.4A Active EP2832448B1 (fr) 2013-07-31 2014-07-28 Centrifugeuse d'huile dotée d'un rotor de centrifugeuse

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US (1) US9844785B2 (fr)
EP (1) EP2832448B1 (fr)
DE (1) DE102014010928A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014010928A1 (de) * 2013-07-31 2015-02-05 Mann + Hummel Gmbh Ölzentrifuge mit Zentrifugenrotor
US10252280B2 (en) * 2013-07-31 2019-04-09 Mann+Hummel Gmbh Oil centrifuge having a throttle point and safety valve
GB2569167B (en) * 2017-12-08 2020-10-14 Mann & Hummel Gmbh Filter assembly having a valve movable between closed and open configurations

Citations (1)

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Publication number Priority date Publication date Assignee Title
US5904841A (en) * 1995-01-12 1999-05-18 The Glacier Metal Company Limited Fluid circulation centrifugal cleaner with pressure regulator

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GB246537A (en) 1924-09-17 1926-01-18 Richard Hollingsworth Griffin An improved signalling apparatus for motor cars or other vehicles
DE10063903A1 (de) * 2000-12-21 2002-07-04 Mann & Hummel Filter Freistrahlzentrifuge mit integriertem Ölabscheider
US6454694B1 (en) * 2001-08-24 2002-09-24 Fleetguard, Inc. Free jet centrifuge rotor with internal flow bypass
DE20213786U1 (de) * 2002-09-04 2004-02-12 Hengst Gmbh & Co.Kg Zentrifuge für die Reinigung von Schmieröl einer Brennkraftmaschine
DE10329199B4 (de) 2003-06-28 2016-08-04 Mahle Filtersysteme Gmbh Ölfilter eines Verbrennungsmotors eines insbesondere Kraftfahrzeuges
GB2406893B (en) 2003-10-08 2007-02-14 Mann & Hummel Gmbh Centifrugal separation apparatus and control valve arrangement therefor
DE202004017820U1 (de) 2004-11-17 2006-03-23 Hengst Gmbh & Co.Kg Freistrahlzentrifuge für die Reinigung des Schmieröls einer Brennkraftmaschine
US7393317B2 (en) * 2005-04-11 2008-07-01 Cummins Filtration Ip, Inc. Centrifuge rotor-detection oil-shutoff device
US7377893B2 (en) * 2005-04-25 2008-05-27 Fleetguard, Inc. Hero-turbine centrifuge with flow-isolated collection chamber
DE102006021033A1 (de) * 2006-05-05 2007-11-08 Fleetguard, Inc., Nashville Zentrifugenrotor-Erkennungsvorrichtung zur Ölzufuhr-Unterbrechung
GB2465374A (en) * 2008-11-14 2010-05-19 Mann & Hummel Gmbh Centrifugal separator with venturi
DE102013012670B4 (de) * 2013-07-31 2015-06-18 Mann + Hummel Gmbh Ölzentrifuge mit Zentrifugenrotor
DE102014010928A1 (de) * 2013-07-31 2015-02-05 Mann + Hummel Gmbh Ölzentrifuge mit Zentrifugenrotor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5904841A (en) * 1995-01-12 1999-05-18 The Glacier Metal Company Limited Fluid circulation centrifugal cleaner with pressure regulator

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US20150038310A1 (en) 2015-02-05
US9844785B2 (en) 2017-12-19
DE102014010928A1 (de) 2015-02-05
EP2832448A1 (fr) 2015-02-04

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