EP1602410B1 - Centrifugeur à jet libre pour purifier les huiles lubrifiantes d'un moteur à combustion interne - Google Patents

Centrifugeur à jet libre pour purifier les huiles lubrifiantes d'un moteur à combustion interne Download PDF

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Publication number
EP1602410B1
EP1602410B1 EP05010220A EP05010220A EP1602410B1 EP 1602410 B1 EP1602410 B1 EP 1602410B1 EP 05010220 A EP05010220 A EP 05010220A EP 05010220 A EP05010220 A EP 05010220A EP 1602410 B1 EP1602410 B1 EP 1602410B1
Authority
EP
European Patent Office
Prior art keywords
rotor
lubricating oil
wall
centrifuge according
dirt
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.)
Not-in-force
Application number
EP05010220A
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German (de)
English (en)
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EP1602410A1 (fr
Inventor
Dieter Baumann
Karl Grosse Wiesmann
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.)
Ing Walter Hengst GmbH and Co KG
Original Assignee
Ing Walter Hengst GmbH and Co KG
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Filing date
Publication date
Application filed by Ing Walter Hengst GmbH and Co KG filed Critical Ing Walter Hengst GmbH and Co KG
Publication of EP1602410A1 publication Critical patent/EP1602410A1/fr
Application granted granted Critical
Publication of EP1602410B1 publication Critical patent/EP1602410B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/1028—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification
    • F01M2001/1035—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification comprising centrifugal filters

Definitions

  • the present invention relates to a free-jet centrifuge for cleaning the lubricating oil of an internal combustion engine, with a housing which is closed with a removable lid, with a rotor rotatably mounted in the housing and with channels for supplying the to be cleaned, pressurized lubricating oil and for discharging the cleaned, pressureless lubricating oil, wherein the rotor is made of plastic and integrally or with firmly interconnected parts, wherein the rotor has at least one recoil nozzle and a dirt collection area and wherein the rotor for disposal with the lid open can be completely removed from the housing.
  • the centrifuge has means for dividing the supplied lubricating oil flow in a first and a second partial flow and the rotor comprises a recoil nozzle (s) comprehensive drive part, which is flowed through by the first partial flow of lubricating oil, and a dirt collecting portion comprising the dirt collecting part of the second lubricating oil partial stream can be flowed through.
  • EP 1 071 512 B1 A free-jet centrifuge of the type described above is out EP 1 071 512 B1 known.
  • the rotor is here completely designed as a disposable part, which is removed from the centrifuge during regular maintenance and replaced by a fresh rotor. So that the rotor can be easily disposed of, in particular thermally recycled, this consists entirely of a readily combustible plastic.
  • this known free-jet centrifuge the full flow of lubricating oil flowing through the centrifuge first flows through the Dirt collection area of the rotor and then through the recoil nozzles.
  • the document shows EP-A-1 340 547 a centrifuge rotor and the document EP-A-1 287 895 shows a centrifuge with a rotor and with a liquid flow distribution on the inlet side in a partial flow to a drive part and a partial flow to a waste trap part.
  • the part of the flow through the dirt trap part is then transferred to the drive part and reunited there with the other, directly in the drive part guided partial flow.
  • the total flow then exits the rotor through the recoil nozzles.
  • the object is to provide a free-jet centrifuge, in which a rotor made entirely of plastic is exposed to lower loads by the lubricating oil pressure.
  • the solution of this object is achieved according to the invention with a free-jet centrifuge of the type specified, which is characterized in that the drive part can only be flowed through by the first partial flow of lubricating oil, that the second partial flow of lubricating oil from the dirt trap part directly in a pressurized area in the interior of the housing is feasible the pressure level on the one hand in the drive part and on the other hand in the waste trap part can be adjusted separately from each other.
  • the rotor has a one-piece upper part, an integral lower part and at least one intermediate wall disposed therebetween, which are connected, preferably welded, and that the upper part and the intermediate wall include the dirt collecting area and the lower part and the intermediate wall form the drive part.
  • the intermediate wall is required for the oil-side distribution of the rotor in the dirt collecting part on the one hand and the drive part on the other hand, resulting in a simple production of the rotor.
  • a single welding area is sufficient for the connection of the upper part and the lower part and intermediate wall, which is a further contribution to a simple and thus cost-effective production of the rotor.
  • the upper part comprises a radially inner and a radially outer annular wall and an upper-side cover wall, that the radially inner annular wall with its hollow interior forms a channel for the lubricating oil partial stream to be supplied to the waste collecting part and that the radially inner wall in its upper region has at least one passage opening from the channel in the dirt collecting area.
  • the lower part has a central inlet for the entire centrifuge supplied lubricating oil flow that leads from the inlet a first opening with a defined cross-section through the partition in the channel and that from the inlet at least one second aperture of defined cross-section leads into at least one nozzle chamber formed between the intermediate wall and the lower part.
  • all means for the division of the supplied lubricating oil flow in the part of the dirt trap on the one hand and the drive part on the other hand flowing part streams are arranged within the rotor. Outside the rotor no further means for the distribution of the oil flow are needed.
  • the lower part on the upper side a low, congruent with the radially inner annular wall of the upper part extending Has annular wall and that the second opening extends radially through the annular wall of the lower part.
  • the specific for the drive part oil partial flow can be supplied from the centrally located inlet on the shortest path through the second opening the drive part. If necessary, a plurality of apertures can be arranged distributed over the circumference of the low annular wall.
  • the intermediate wall is made in one piece with at least one pipe-outlet-type oil outlet channel which extends from a radially inner part of the dirt collecting area through the / a nozzle chamber leads to the bottom of the rotor and whose cross section is greater than the cross section of the first opening and the transfer opening (s). Due to the one-piece design of the intermediate wall with the ⁇ lauslwiekanal the construction of the rotor remains simple and it suffice in the best case, three items to form the complete rotor.
  • the intermediate wall is made in one piece and extending in a plane between the upper part and lower part.
  • the rotor comprises only three parts to be joined, in which case advantageously the joining of the parts can take place in a single plane extending in the radial direction.
  • the intermediate wall is made in two parts and that extends a radially outer part of the intermediate wall in a first plane and a radially inner part of the intermediate wall in a second plane between the upper part and lower part.
  • the rotor has an item more, but hereby greater freedom in terms of design, in particular the drive part is achieved.
  • the rotor in particular its most part of the rotor engaging dirt catcher part, with the lowest possible material thickness, without causing the risk of damage, is preferably provided in another embodiment that in the dirt catching part pointing in the radial direction, uniformly in the circumferential direction of the rotor spaced guide and partitions are provided which are integral with the upper part.
  • the guide and partition walls provide stiffening of the dirt trap part, in particular its radially outer peripheral wall, which is acted upon by the centrifugal forces arising during rotation of the rotor.
  • the one-piece design of the control and partitions with the rest of the rotor ensures ease of manufacture and no additional assembly steps are required for the baffles and partitions.
  • the guide and partitions ensure that during the acceleration of the rotor, the lubricating oil therein is rapidly accelerated without slippage, so that the centrifugal force used for the separation of dirt particles is very quickly effective.
  • stub shafts can be advantageously made in one piece with the upper part or the lower part of the rotor, so that no special manufacturing and assembly steps are necessary for this purpose.
  • centrifuge provides, instead of the stub shaft, that the rotor has in its center an axially continuous, up and down or only downwardly open cavity, that passes through the cavity for rotatably supporting the rotor, a housing-fixed axis and that between the axis and the rotor bearings are arranged, which remain in the removal of the rotor from the housing on the axis.
  • the rotor remains very simple in construction and is therefore inexpensive to produce.
  • the rotor is completely disposable, the bearings for the storage of the rotor when replacing the rotor remain on the fixed in the housing of the centrifuge axis and continue to be used for the new rotor. It is therefore disposed of here also in the maintenance of the centrifuge only the rotor made of plastic together with the dirt particle cake deposited therein.
  • the axis with the Storage remains as a lifetime component in the centrifuge.
  • the free-jet centrifuge is preferably provided in a further embodiment that passes through the housing fixed axis an oil inlet forming portion of an oil supply passage that of the oil inlet through at least one provided in the axis first transition opening with a defined cross-section of the first partial flow of lubricating oil in the dirt collection area is feasible and that from the oil inlet through at least one provided in the axis second crossing opening with a defined cross-section of the second partial flow of lubricating oil is feasible in the drive part.
  • the means for dividing the lubricating oil flow supplied to the centrifuge are integrated into the two partial flows for the waste collecting part and the drive part in the axis provided on the housing side. The rotor must therefore not have these means and can be of a correspondingly simple design.
  • a development of the above-mentioned centrifuge provides that a lower bearing of the rotor is formed by a sliding bearing with a bearing bushing placed on the axle, that downstream of the second crossing opening of the axis in the bearing bush at least one leading into the drive part further passage opening is provided and that the rotor is sealed with a central lower, sleeve-shaped region in the sliding seat mounted on the bearing bush.
  • the flow path for the lubricating oil partial flow to the drive part extends through the bearing bush and thus through the lower sliding bearing of the rotor, whereby its effective lubrication is reliably ensured.
  • the rotor sits here by means of its lower, sleeve-like shaped area tight and mechanically strong enough on the bearing bush, so that an undesirable vertical play of the rotor during operation of the centrifuge is sufficiently prevented.
  • the rotor can be removed from the bearing bush manually or by means of an auxiliary tool.
  • FIGS. 1 to 4 illustrated embodiments have in common that they have a mechanically integral rotor 2, but the rotor 2 functionally each have a drive part 3 and a dirt trap part 4, which are each traversed by its own lubricating oil partial stream.
  • the rotor 2 has an upper part 22 and a lower part 23 and an intermediate wall 24 arranged between these, these three parts are sealingly connected together and thus form the one-piece rotor 2.
  • the individual parts 22-24 of the rotor 2 are made a thermoplastic material and are welded together.
  • the upper part 22 of the rotor 2 has radially outside a peripheral wall 40, radially inwardly an inner wall 43 and axially above an upper wall 41, which together form a one-piece injection-molded part. From the top of the upper wall 41 projects also integrally formed with the upper part 22 stub shaft 5 '', which serves for the rotatable mounting of the rotor 2 in the housing, not shown here, of the centrifuge.
  • a dirt collecting area 4 ' is formed, which serves to receive dirt particles from the centrifuged lubricating oil.
  • the supply of the lubricating oil in the waste collecting part 4 takes place through the channel 30 'in the interior of the radially inner wall 43, which is connected via a plurality of radially extending oil inlets 44 with the dirt collecting area 4'.
  • the interior of the waste collecting part 4 extending in the radial direction and circumferentially spaced guide and partitions 48 are arranged, which are also integral with the upper part 22.
  • the drive part 3 consists of the lower part 23 and the intermediate wall 24.
  • the supply of the lubricating oil to the rotor 2 takes place centrally from below through the oil inlet 18 in the center of the lower part 23.
  • This oil inlet 18 is in the form of a pipe socket formed, which simultaneously forms a downwardly projecting lower stub shaft 5 'for the rotatable mounting of the rotor 2.
  • the oil inlet 18 is connected to the previously mentioned channel 30 'for supplying the lubricating oil to be cleaned to the dirt collecting part 4 via a first opening 24. 1 extending in the axial direction through the intermediate wall 24.
  • a radially extending second opening 24.2 of the inlet 18 is connected to the nozzle chambers 34 '.
  • the radial opening 24.2 extends through a low annular wall 30.1, which is formed integrally with the lower part 23 and extending from this dekkungstechnisch with the inner wall 43 of the upper part 22 upwards.
  • the lower end of the radially inner wall 43 of the upper part 22 and the axially upper end of the annular wall 30.1 of the lower part 23 each abut sealingly against the upper side or lower side of the intermediate wall 24.
  • intermediate wall 24 is still designed with at least one integrally formed, through one of the nozzle chambers 34 'downwardly extending tubular member which forms an oil outlet 47 for the purified lubricating oil.
  • the cross section of the first opening 24.1 is smaller than the cross section of the second opening 24.2.
  • the first opening 24.1 forms a throttle point at which the oil pressure is reduced, after which the oil in the interior of the waste collecting part 4 is depressurized.
  • the inlets 44 and the outlet 47 for the first partial oil flow with a ratio executed for the first opening 24.1 larger cross-section.
  • the return nozzles 34 form a throttle point, since the cross-section of the nozzles 34 is smaller than the cross section of the second opening 24.2, which leads the second partial oil flow in the nozzle chambers 34 '. This is in the nozzle chambers 34 'and the nozzles 34 of the full lubricating oil pressure and for the drive of the rotor 2 available.
  • the intermediate wall 24 extends here as a one-piece wall in a single radial plane through the lower part of the rotor. 2
  • FIG. 2 shows a modified in this regard embodiment of the rotor 2, in which now the intermediate wall of two intermediate wall parts 24 and 24 'is formed.
  • a radially outer intermediate wall part 24 lies in one of the position of the intermediate wall 24 according to FIG. 1 corresponding position between the upper part 22 and the lower part 23 of the rotor 2.
  • the annular wall 30.1 formed higher on the top of the lower part.
  • a central intermediate wall part 24.1 rests on the upper side of this higher annular wall 30.1 and has in its center the first opening 24.1 for the part of the lubricating oil flowing to the dirt trapping part 4.
  • the rotor 2 corresponds to FIG. 2 according to the execution FIG. 1 ,
  • FIG. 3 shows the rotor 2 FIG. 2 in a cross section along the line CC in FIG. 2 , Radial is outside in FIG. 3 the radially outer peripheral wall 40 of the waste collecting part 4 of the rotor 2 can be seen.
  • the inner wall 43 of the dirt trap part 4 lies radially inwards. Through the hollow interior of the inner wall 43 runs the channel 30 '.
  • FIG. 4 Finally, a complete centrifuge 1 in longitudinal section, wherein the centrifuge 1 has a one-piece rotor 2 which is rotatable about the axis of rotation 20.
  • the centrifuge 1 comprises a housing 10, which is closed on the upper side with a screw cap 14.
  • the housing 10 has an internal thread 11 and the cover 14 has an external thread 16, which are in releasable threaded engagement with each other.
  • the rotor 2 can be removed by stripping upward from the housing 10 and disposed of. A new rotor 2 can then be used in the reverse direction from above to complete the centrifuge 1 again.
  • the rotor 2 here also has a drive part 3 and a dirt trap part 4, which are not separable from each other, but form a unit.
  • the rotor 2 consists of a thermoplastic material and is made of an upper part 22 and a lower part 23 along a circumferential weld 40 'welded together.
  • the radially outer region of the interior of the waste collecting part 4 here again forms the dirt collecting area 4 ', which is limited to the outside by the wall 40, up through the wall 41 and down through the bottom 42 of the rotor 2.
  • two branch channels 33 are formed, each leading to a 'Rückdorfdüse 34 for driving the rotor 2.
  • the housing 10 of the centrifuge 1 here comprises a housing part 10 'arranged under the rotor 2, to which a central axis 5 for the rotatable mounting of the rotor 2 is connected.
  • the axle 5 is screwed to a central axle receptacle 12 of the housing part 10 '.
  • the axis 5 is hollow in a lower portion 53, whereby a flow path for lubricating oil is formed.
  • a minimum pressure valve 7 with a loaded in the closing direction by a spring valve body 70 which closes the oil inlet 18 of the centrifuge 1 in the absence or low oil pressure.
  • the rotor 2 is rotatably mounted on the axis 5 fixed to the housing.
  • the minimum pressure valve 7 opens.
  • lubricating oil to be cleaned flows through the inlet 18 in the axial direction upward past the valve body 70 of the minimum pressure valve 7.
  • radial passages 54 lead from the hollow interior of section 53 of the axis 5 to the outside.
  • radial channels 54 '' are formed, which together form a radial flow path from the section 53 into the branch channels 33 to the recoil nozzles 34.
  • the lubricating oil passing through the inlet 44 into the upper region of the waste collecting part 4 flows through the interior of the waste collecting part 4 from top to bottom, due to a rotation of the rotor 2 dirt particles by centrifugal radially outward in the interior of the waste collecting part 4, namely in the dirt collecting 4 ' , drop.
  • the cleaned lubricating oil leaves the dirt trap part 4 radially inwardly and downwardly through an oil outlet 47, from where the lubricating oil passes into a pressure-free region 13 in the interior of the housing 10. From there, the lubricating oil, for example, flow back into the oil pan of an associated internal combustion engine.
  • interrupted deflecting ribs 17 extending in the circumferential direction are provided on the underside of the drive part 3 and on the upper side of the housing part 10 '.
  • the exiting from the nozzles 34 lubricating oil partial flow passes radially outward from the Umlenkrippen 17 also in the unpressurized region 13 and from there back to the oil pan of the associated internal combustion engine.
  • a shield 17 ' which is mounted radially outwardly from the outlet 47 and parallel to and at a distance from the top of the housing part 10' thereto.
  • the radial channel 54 ' form a throttle point for flowing through the dirt trap part 4 lubricating oil partial flow to relieve the waste trap part 4 of the lubricating oil pressure.
  • the rotor 2 is seated in its assembled state by means of a lower portion 30 "of its tubular body 30 sealed and sufficiently tight on the bearing bush 21 of the lower sliding bearing 51 and with an upper end portion The fit is selected in both bearings 51 and 52 so that the rotor 2 is sufficiently fixed in the attached state, but with the cover removed 14 and remote fuse 38 can still be easily removed manually upwards ,

Landscapes

  • Centrifugal Separators (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Detergent Compositions (AREA)

Claims (13)

  1. Centrifugeuse à jet libre (1) pour l'épuration de l'huile de graissage d'un moteur à combustion interne, comprenant un boîtier (10) qui est fermé par un couvercle amovible (14), un rotor (2) situé rotatif dans le boîtier (10) et des canaux (18, 13) pour amener l'huile de graissage sous pression à épurer et évacuer l'huile de graissage sans pression à épurer, le rotor (2) étant réalisé en matière plastique et d'une seule pièce ou à partir de pièces reliées entre elles de manière solidaire, le rotor (2) comportant au moins une tuyère à réaction (34) et une zone collectrice d'impuretés (4') et le rotor (2) pouvant, lorsque le couvercle (14) est ouvert, être entièrement retiré du boîtier (10) pour être mis au rebut, la centrifugeuse (1) comportant des moyens pour séparer le flux d'huile de graissage amené en un premier et un deuxième flux partiel et le rotor (2) comportant une partie d'entraînement (3) qui inclut la tuyère / les tuyères à réaction et peut être traversée par le premier flux partiel d'huile de graissage et une partie de piégeage d'impuretés (4) incluant la zone collectrice d'impuretés (4'), laquelle partie peut être traversée par le deuxième flux partiel d'huile de graissage,
    caractérisée en ce que
    la partie d'entraînement (3) ne peut être traversée que par le premier flux partiel d'huile de graissage,
    le deuxième flux partiel d'huile de graissage peut passer directement de la partie de piégeage d'impuretés (4) à une zone sans pression (13) à l'intérieur du boîtier (10) et
    le niveau de pression est réglable séparément dans la partie d'entraînement (3), d'une part, et dans la partie de piégeage d'impuretés (4), d'autre part.
  2. Centrifugeuse à jet libre selon la revendication 1, caractérisée en ce que le rotor (2) comporte une partie supérieure (22) d'une seule pièce, une partie inférieure (23) d'une seule pièce et au moins une paroi intermédiaire (24, 24') située entre les deux, ces éléments étant reliés, et de préférence soudés entre eux, et en ce que la partie supérieure (22) et la paroi intermédiaire (24, 24') enferment la zone collectrice d'impuretés (4') et la partie inférieure (23) et la paroi intermédiaire (24, 24') constituent la partie d'entraînement (3).
  3. Centrifugeuse à jet libre selon la revendication 2, caractérisée en ce que la partie supérieure (22) inclut une paroi annulaire radialement intérieure et une paroi annulaire radialement extérieure (43, 40) et un plafond supérieur (41), en ce que la paroi annulaire radialement intérieure (43) constitue, avec son intérieur creux, un canal (30') pour le flux partiel d'huile de graissage à amener à la partie de piégeage d'impuretés (4) et en ce que la paroi radialement intérieure (43) comporte, en sa partie supérieure, au moins une ouverture de passage (44) du canal (30') dans la zone collectrice d'impuretés (4').
  4. Centrifugeuse à jet libre selon la revendication 2 ou 3, caractérisée en ce que la partie inférieure (23) comporte une admission centrale (18) pour tout le flux d'huile de graissage amené à la centrifugeuse, en ce qu'un premier orifice (24.1) de section définie permet le passage de l'admission (18) au canal (30') en passant par la paroi intermédiaire (24, 24') et en ce qu'au moins un deuxième orifice (24.2) de section définie permet le passage de l'admission (18) à au moins une chambre de tuyère (34') réalisée entre la paroi intermédiaire (24, 24') et la partie inférieure (23).
  5. Centrifugeuse à jet libre selon la revendication 4, caractérisée en ce que la partie inférieure (23) comporte, en sa partie supérieure, une paroi annulaire (30.1) basse qui coïncide avec la paroi annulaire (43) radialement intérieure de la partie supérieure (22) et en ce que le deuxième orifice (24.2) traverse radialement la paroi annulaire (30.1) de la partie inférieure (23).
  6. Centrifugeuse à jet libre selon la revendication 4 ou 5, caractérisée en ce que la paroi intermédiaire (24, 24') est réalisée d'une seule pièce avec au moins un canal de sortie d'huile (47) en forme d'embout tubulaire, qui mène de la partie radialement intérieure de la zone collectrice d'impuretés (4') vers la partie inférieure du rotor (2) en passant par la/une chambre de tuyère (34') et dont la section est supérieure à la section du premier orifice (24.1) et de l'ouverture / des ouvertures de passage (44).
  7. Centrifugeuse à jet libre selon l'une des revendications 2 à 6, caractérisée en ce que la paroi intermédiaire (24) est réalisée d'une seule pièce et s'étend dans un plan compris entre la partie supérieure (22) et la partie inférieure (23).
  8. Centrifugeuse à jet libre selon l'une des revendications 2 à 6, caractérisée en ce que la paroi intermédiaire (24, 24') est réalisée en deux pièces et en ce qu'une partie radialement extérieure (24) de la paroi intermédiaire (24, 24') s'étend dans un premier plan et une partie radialement intérieure (24') de la paroi intermédiaire (24, 24') s'étend dans un deuxième plan compris entre la partie supérieure (22) et la partie inférieure (23).
  9. Centrifugeuse à jet libre selon l'une des revendications 2 à 8, caractérisée en ce que sont prévues, dans la partie de piégeage d'impuretés (4), des parois de guidage et de séparation (48) orientées dans le sens radial et espacées régulièrement dans le sens du pourtour du rotor (2), lesquelles parois sont réalisées d'une seule pièce avec la partie supérieure (22).
  10. Centrifugeuse à jet libre selon l'une des revendications 1 à 9, caractérisée en ce qu'un moignon d'arbre centrique (5', 5") est respectivement monté en haut et en bas sur le rotor (2), ou formé d'une seule pièce sur celui-ci, pour permettre le logement rotatif du rotor (2).
  11. Centrifugeuse à jet libre selon l'une des revendications 1 à 9, caractérisée en ce que le rotor (2) comporte, en son centre, un espace creux (30') continu dans le sens axial et ouvert dans le haut et dans le bas ou uniquement dans le bas, en ce qu'un axe (5) solidaire du boîtier traverse l'espace creux (30') pour assurer le logement rotatif du rotor (2) et en ce que sont situés, entre l'axe (5) et le rotor (2), des paliers (51, 52) qui restent sur l'axe (5) lors du retrait du rotor (2) hors du boîtier (10).
  12. Centrifugeuse à jet libre selon la revendication 11, caractérisée en ce qu'un tronçon d'un canal d'amenée d'huile formant une admission d'huile (18) passe par l'axe (5) solidaire du boîtier, en ce que le premier flux partiel d'huile de graissage peut passer de l'admission d'huile (18) à la zone collectrice d'impuretés (4') en passant par au moins une première ouverture de passage (54') de section définie prévue dans l'axe (5) et en ce que le deuxième flux partiel d'huile de graissage peut passer de l'admission d'huile (18) à la partie d'entraînement (3) par au moins une deuxième ouverture de passage (54) de section définie prévue dans l'axe.
  13. Centrifugeuse à jet libre selon la revendication 12, caractérisée en ce qu'un palier inférieur (51) du rotor (2) est constitué par un palier lisse avec un coussinet (51') posé sur l'axe (5), en ce qu'au moins une autre ouverture de passage (54") menant à la partie d'entraînement (3) est prévue en aval de la deuxième ouverture de passage (54) de l'axe (5) dans le coussinet (51') et en ce que le rotor (2) est posé, en une zone centrale inférieure en forme de manchon (30"), avec siège coulissant, de manière étanche sur le coussinet (51').
EP05010220A 2004-06-02 2005-05-11 Centrifugeur à jet libre pour purifier les huiles lubrifiantes d'un moteur à combustion interne Not-in-force EP1602410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004008785U DE202004008785U1 (de) 2004-06-02 2004-06-02 Freistrahlzentrifugen für die Reinigung des Schmieröls einer Brennkraftmaschine
DE202004008785U 2004-06-02

Publications (2)

Publication Number Publication Date
EP1602410A1 EP1602410A1 (fr) 2005-12-07
EP1602410B1 true EP1602410B1 (fr) 2009-12-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010220A Not-in-force EP1602410B1 (fr) 2004-06-02 2005-05-11 Centrifugeur à jet libre pour purifier les huiles lubrifiantes d'un moteur à combustion interne

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EP (1) EP1602410B1 (fr)
AT (1) ATE451969T1 (fr)
DE (2) DE202004008785U1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005014427U1 (de) * 2005-09-12 2007-02-01 Hengst Gmbh & Co.Kg Zweiteiliger Rotor für eine Zentrifuge und Zentrifuge mit einem solchen Rotor
DE202005017208U1 (de) * 2005-11-02 2007-03-22 Hengst Gmbh & Co.Kg Rückstoßdüse für den Rotor einer Zentrifuge und Rotor mit solchen Rückstoßdüsen
DE202005020012U1 (de) * 2005-12-22 2007-05-10 Hengst Gmbh & Co.Kg Zentrifuge zum Reinigen einer Flüssigkeit
DE102007046000A1 (de) * 2007-09-26 2009-04-09 Scania Cv Ab Filter für hydraulischen Fluidkreislauf

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731313A (en) * 1926-05-24 1929-10-15 Laval Separator Co De Oil-purifying apparatus for motor-propelled vehicles
CH532422A (de) * 1970-12-23 1973-01-15 Sulzer Ag Zentrifugiereinrichtung zur Reinigung eines Betriebsmittels einer Kolbenbrennkraftmaschine
US3791576A (en) * 1972-01-10 1974-02-12 Sulzer Ag Centrifuge
US4106689A (en) * 1977-04-06 1978-08-15 The Weatherhead Company Disposable centrifugal separator
DE2905645A1 (de) * 1979-02-14 1980-08-28 Glacier Metal Co Ltd Zentrifugalseparator
DE4403425A1 (de) * 1993-02-20 1994-08-25 Audi Ag Verfahren und Vorrichtung zur Überwachung der Funktion einer Freistrahl-Zentrifuge in Druckumlauf-Schmiersystem
DE4430751A1 (de) * 1994-08-30 1996-03-07 Mann & Hummel Filter Fluidkreislauf mit einem Hauptstromfilter
GB9502055D0 (en) * 1995-02-02 1995-03-22 Glacier Metal Co Ltd Liquid cleaning system including back-flushing filter and centrifugal cleaner therefor
DE20010612U1 (de) * 2000-06-20 2001-10-31 Ing. Walter Hengst GmbH & Co. KG, 48147 Münster Freistrahl-Zentrifuge
US6454694B1 (en) * 2001-08-24 2002-09-24 Fleetguard, Inc. Free jet centrifuge rotor with internal flow bypass
US6793615B2 (en) * 2002-02-27 2004-09-21 Fleetguard, Inc. Internal seal for a disposable centrifuge
DE20213786U1 (de) * 2002-09-04 2004-02-12 Hengst Gmbh & Co.Kg Zentrifuge für die Reinigung von Schmieröl einer Brennkraftmaschine

Also Published As

Publication number Publication date
DE502005008695D1 (de) 2010-01-28
EP1602410A1 (fr) 2005-12-07
ATE451969T1 (de) 2010-01-15
DE202004008785U1 (de) 2005-10-13

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