EP1268074B1 - Centrifugeuse a surfaces de separation orientees axialement - Google Patents

Centrifugeuse a surfaces de separation orientees axialement Download PDF

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Publication number
EP1268074B1
EP1268074B1 EP01943201A EP01943201A EP1268074B1 EP 1268074 B1 EP1268074 B1 EP 1268074B1 EP 01943201 A EP01943201 A EP 01943201A EP 01943201 A EP01943201 A EP 01943201A EP 1268074 B1 EP1268074 B1 EP 1268074B1
Authority
EP
European Patent Office
Prior art keywords
rotor
insert
centrifuge
separation surfaces
inner tube
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.)
Expired - Lifetime
Application number
EP01943201A
Other languages
German (de)
English (en)
Other versions
EP1268074A2 (fr
Inventor
Andrew J. Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP1268074A2 publication Critical patent/EP1268074A2/fr
Application granted granted Critical
Publication of EP1268074B1 publication Critical patent/EP1268074B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • 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

Definitions

  • the invention relates to a centrifuge, in particular a free-jet centrifuge for cleaning lubricating oil of an internal combustion engine, having axially oriented deposition surfaces according to the preamble of claim 1. Furthermore, the invention relates an insert for such a centrifuge rotor, having said deposition surfaces according to the preamble of claim 5.
  • Such deposition surfaces for centrifuge rotors are for example from the WO00 / 23194 known. These deposit surfaces are in a replaceable insert arranged and should cause the dirt pickup of the fluid to be centrifuged. If such an insert is sufficiently loaded with particles, it can be replaced or to be cleaned. This is a particularly economical operation of the centrifuge rotors possible because when reaching the highest dirt holding capacity of the rotor only the insert needs to be changed.
  • a centrifuge according to the The preamble of claim 1 is known from WO-A-9 951 353.
  • an insert according to claim 1 or 5 is housed in the centrifuge rotor. All in all the insert can be flowed through axially, d. H. that the deposition surfaces so axially are arranged in use, that they have an axial or at least substantially axial Allow it to flow through.
  • spiral arrangement of the deposition surfaces is thus to be understood that these with respect to a running through the axis of rotation of the rotor straight line an angle between 0 and 90 ° (0 ° would have an orientation as a radial rib and 90 ° mean a design as a peripheral wall).
  • an optimal separation is achieved because the described orientation of the Depositing surfaces for optimal acceleration of the particles to be separated by rotation of the rotor leads.
  • the particles are passing through the concave surface of the deposition surfaces accelerated and on the convex surface of the adjacent deposition surface or deposited on the outer peripheral edge of the insert.
  • the rotor must be replaced if the deposits have reached a level that the fluid no longer fast enough through the formed by the deposition surfaces Channels can flow.
  • the deposition surfaces extend in a constant angle ⁇ to any, passing through the axis of rotation of the rotor Levels. This causes a steady acceleration of the fluid in the said channels of the mission achieved.
  • each an inner and outer tube At this Pipes are attached to the deposition surfaces, leaving a more stable composite body arises. Due to the stability, the wall thickness of the individual walls can be minimized and thus the volume of the insert can be maximized, leaving that space for deposition of particles is available.
  • the insert is with the Inner and outer tube installed in the rotor so that the insert with the outer tube supported in the rotor and the inner tube with the spindle of the housing, which supports the storage carries for the rotor, communicates with low friction.
  • the insert can furthermore be arranged replaceably in the rotor. In this way, only needs to be replaced when reaching the end of life become. Instead of a replacement is also a cleaning of the insert conceivable because the deposition surfaces are arranged easily accessible.
  • the cleaning can z. B. by means of compressed air or by means of a cleaning jet along the axial deposition surfaces respectively.
  • FIG. 1 shows a centrifuge 104 with a rotor 10.
  • the housing 101 includes a spindle 12 on which the rotor is rotatably supported by means of bearing rings 16, 18.
  • the spindle is further hollow, so that via an inlet 102 accordingly of the arrow 20, the fluid can penetrate through openings 22, 24 in the rotor 10.
  • the rotor 10 may have a bearing tube which supports the bearing rings 16, 18 and separates the interior of the rotor from the spindle. In this bearing tube need additional Be provided openings for the passage of the fluid.
  • the rotor 10 comprises an outer wall 14.
  • the outer wall 14 is to the spindle sealed, in which case the bearing rings 16, 18 are used. About these prevents the centrifuged liquid from the centrifuge rotor in larger Quantities in the housing exits.
  • the liquid enters through said openings 22, 24 in the centrifuge rotor.
  • the liquid consists of the oil for an internal combustion engine.
  • the rotor 10 forms a chamber 30, which consists of the space between the bearing rings 16, 18 and the outer wall 14 results. Without any structure in the chamber 30, the fluid would take the path of least resistance. This path, as shown in calculations, extends along the spindle and behind an annular cutting disk 32 towards the drive chamber 33, which is located below the cutting disc. While the fluid follows this path, its rotation is but less than that of the centrifuge rotor. This is related to that in near the spindle acts a lower centrifugal force than on the outside of the Rotor. As a result, the particles to be separated have to travel a long distance, to get to the separation surface on the outer wall.
  • an insert 40 with Abscheidevid housed.
  • the use 40 extends from the spindle 12 (alternatively, but not shown, from the bearing tube) to an outer wall 14 of the insert.
  • the insert also has an upper one End face 42 and a lower end face 44. Not necessary, but beneficial the end face 42 and the end face 44 parallel to each other and at right angles to the Axis of rotation 46 of the centrifuge.
  • the insert is also designed so that it replaced can be.
  • the insert is suitable for a large To collect the amount of particles in the fluid to be centrifuged.
  • the insert is shown in more detail.
  • This includes an inner tube 48 and an outer tube 50.
  • the inner tube 48 is designed such that the diameter is substantially equal to the diameter of the spindle (not shown in Figure 1). This will be a Side flow of the liquid to be centrifuged outside the insert prevented. As a result, the fluid is forced through the one provided with the Abscheide perennial Use to flow.
  • the insert thus effectively added to the zuzentrifug Schlude Fluid in the necessary for the deposition of the particles rotational movement. Independently the diameter of the entire fluid is thus exposed to the same centrifugal force.
  • the outer tube 50 has a diameter which is also substantially equal to the inner diameter of the outer wall 14 of the rotor. This can be seen in FIG become.
  • the outer tube 50 is designed as a cylinder which is between extends the two end faces 42 and 44 of the insert.
  • the insert is designed in such a way that the particles settled on the concave curved Abscheidevid, wherein there is an additional tendency towards the outer diameter of the insert. This means that the insert is essentially from the outside inwards with the filter cake fills, as is already known from centrifuges according to the prior art.
  • FIGS. 2 and 3 further show that the insert has a larger number of Separation surfaces 52 includes. Each of these separation surfaces also extends from the upper end 42 to the lower end 44 of the insert. In addition, runs each of the separation surfaces between the inner tube 48 and the outer tube 50. Thus Each separation surface forms a guide surface, along which the particles in the zu centrifuging fluid to be deposited in use. there is a continuous course of the curvature of the separation surfaces of great advantage because the flow is the least disturbed in this way. Turbulence in the flow, which can have a negative impact on a deposit and on missions according to The prior art may be necessary in the described use completely be avoided.
  • the optimal angle can be between 30 and 30 60 °.
  • the design of the separation surfaces further ensures that nearby of the inner tube, where the lowest centrifugal force prevails, also the Abscheidweg for the particles are the least, since the distance between adjacent separation surfaces downsized to the inside of the insert.
  • the insert has a length X. These Length is given by the totality of the components of the insert, so the inner tube 48, the outer tube 50 and the entirety of the Abscheide Jerusalem 52.
  • the length X is smaller than the length Y of the outer wall of the rotor 10.
  • Areas 54 forming the collection of the fluid in the rotor and a preliminary calming of the same.
  • the areas 54 go steplessly into the outer wall 14 above.
  • a concentration of the fluid take place with particles to be separated. This is ensures that the filter cake in use preferably builds up on the outer tube 50, to ensure its stability. Furthermore, it prevents this from happening uneven filter cake builds up so that the rotor is optimally balanced with the insert remains.
  • An alternative, not shown, also allows the accommodation of several Inserts in a rotor.
  • a kind of modular system so that rotors of different capacity with a small number of different Inserts or even just one type of inserts can be formed.
  • an insert can be formed which includes fewer separation surfaces and the tasks of the areas 54 by the calming of the fluid takes over.

Landscapes

  • Centrifugal Separators (AREA)

Claims (5)

  1. Centrifugeuse, notamment centrifugeuse à jet libre, pour le nettoyage d'huile de graissage d'un moteur à combustion interne, comprenant un rotor (10) logé en rotation dans un boítier (101) avec un insert (40) contenant des surfaces de dépôt (52) pour des impuretés et pouvant être traversé axialement par le fluide à nettoyer, les surfaces de dépôt dans l'insert étant orientées en forme de spirale par rapport à l'axe de rotation du rotor,
    caractérisée en ce que
    l'insert présente un tube extérieur (50) auquel les surfaces de dépôt sont fixées et depuis lequel elles s'étendent vers l'intérieur, et l'insert présente un tube intérieur (48) auquel les surfaces de dépôt sont fixées et depuis lequel elles s'étendent vers l'extérieur, le tube intérieur coopérant sans friction avec une broche (12) du boítier pour le logement du rotor, et une paroi extérieure (14) du rotor s'appuyant sur la face intérieure, pour ainsi obtenir un corps composite stable.
  2. Centrifugeuse selon la revendication 1,
    caractérisée en ce que
    les surfaces de dépôt (52) présentent un angle a constant par rapport à des plans quelconques traversant l'axe de rotation du rotor (10).
  3. Centrifugeuse selon la revendication 2,
    caractérisée en ce que
    l'angle α est de 45°.
  4. Centrifugeuse selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'insert (40) est monté de façon interchangeable dans le rotor (10).
  5. Insert (40) muni de surfaces de dépôt (52) pour un rotor de centrifugeuse, ces surfaces de dépôt dans l'insert étant orientées en forme de spirale par rapport à l'axe de rotation du rotor de centrifugeuse associé,
    caractérisé en ce que
    l'insert présente un tube extérieur (50) auquel les surfaces de dépôt sont fixées et depuis lequel elles s'étendent vers l'intérieur, et un tube intérieur (48) auquel les surfaces de dépôt sont fixées et depuis lequel elles s'étendent vers l'extérieur, le tube intérieur coopérant lors de l'utilisation sans friction avec une broche (12) du boítier pour le logement du rotor, et une paroi extérieure (14) du rotor s'appuyant sur la face intérieure, pour obtenir ainsi un corps composite stable.
EP01943201A 2000-04-03 2001-03-29 Centrifugeuse a surfaces de separation orientees axialement Expired - Lifetime EP1268074B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US19420900P 2000-04-03 2000-04-03
US194209P 2000-04-03
PCT/EP2001/003563 WO2001074492A2 (fr) 2000-04-03 2001-03-29 Centrifugeuse a surfaces de separation orientees axialement

Publications (2)

Publication Number Publication Date
EP1268074A2 EP1268074A2 (fr) 2003-01-02
EP1268074B1 true EP1268074B1 (fr) 2005-09-28

Family

ID=22716725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01943201A Expired - Lifetime EP1268074B1 (fr) 2000-04-03 2001-03-29 Centrifugeuse a surfaces de separation orientees axialement

Country Status (5)

Country Link
EP (1) EP1268074B1 (fr)
AT (1) ATE305336T1 (fr)
AU (1) AU6584501A (fr)
DE (1) DE50107568D1 (fr)
WO (1) WO2001074492A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206823A1 (de) 2016-04-21 2017-10-26 Man Diesel & Turbo Se Zentrifuge sowie Einsatz und Bodenelement für eine Zentrifuge

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6551230B2 (en) 2000-04-04 2003-04-22 Fleetguard, Inc. Molded spiral vane and linear component for a centrifuge
US6540653B2 (en) 2000-04-04 2003-04-01 Fleetguard, Inc. Unitary spiral vane centrifuge module
US6652439B2 (en) * 2000-04-04 2003-11-25 Fleetguard, Inc. Disposable rotor shell with integral molded spiral vanes
EP1142644B1 (fr) * 2000-04-04 2004-09-01 Fleetguard, Inc. Centrifugeuse autopropulsée avec un module comprenant des aubes de séparation
US6602180B2 (en) 2000-04-04 2003-08-05 Fleetguard, Inc. Self-driven centrifuge with vane module
US7182724B2 (en) * 2004-02-25 2007-02-27 Fleetguard, Inc. Disposable centrifuge rotor
EP1787723B1 (fr) * 2005-11-18 2017-02-22 Ferrum AG Cartouche centrifuge
DE102008052630A1 (de) * 2008-10-22 2010-04-29 Gea Westfalia Separator Gmbh Zentrifuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US648664A (en) * 1899-04-27 1900-05-01 D H Burrell & Co Centrifugal liquid-separator.
US1719522A (en) * 1924-05-19 1929-07-02 Sharples Separator Company Cream separator
SE9801183D0 (sv) * 1998-04-02 1998-04-02 Alfa Laval Ab Rotor för centrifugalseparator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206823A1 (de) 2016-04-21 2017-10-26 Man Diesel & Turbo Se Zentrifuge sowie Einsatz und Bodenelement für eine Zentrifuge

Also Published As

Publication number Publication date
DE50107568D1 (de) 2006-02-09
AU6584501A (en) 2001-10-15
EP1268074A2 (fr) 2003-01-02
WO2001074492A3 (fr) 2002-04-04
ATE305336T1 (de) 2005-10-15
WO2001074492A2 (fr) 2001-10-11

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