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WO1992016303A1 - Filtres perfectionnes - Google Patents

Filtres perfectionnes Download PDF

Info

Publication number
WO1992016303A1
WO1992016303A1 PCT/GB1992/000431 GB9200431W WO9216303A1 WO 1992016303 A1 WO1992016303 A1 WO 1992016303A1 GB 9200431 W GB9200431 W GB 9200431W WO 9216303 A1 WO9216303 A1 WO 9216303A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
fluid
rest
cleaner according
support means
Prior art date
Application number
PCT/GB1992/000431
Other languages
English (en)
Inventor
James Mcnair
Nigel Henry New
Original Assignee
The Glacier Metal Company Limited
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 The Glacier Metal Company Limited filed Critical The Glacier Metal Company Limited
Publication of WO1992016303A1 publication Critical patent/WO1992016303A1/fr

Links

Classifications

    • 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

  • This invention relates to liquid filtration and is in particular concerned with centrifugal cleaners for use inter alia, in the lubricant oil circulation systems of internal combustion engines.
  • Centrifugal cleaners are well-known; they include a centrifuge member or rotor which is driven by the oil flow itself, the oil being constrained to flow through nozzles in the form of orifices directed generally tangentially with respect to the axis of rotation of the rotor.
  • the rotor itself is freely rotatable on a supporting spindle; it is conventional for the geometry of the interface
  • a centrifugal cleaner comprises a casing having a fluid inlet and a fluid outlet with an axially displaceable centrifuge rotor interposed therebetween, the cleaner further including support means for said rotor when at rest, spring means for biassing said support means towards a first position corresponding to the at rest position of the rotor when empty of fluid and detritus, together with switch means for indicating when the rotor is displaced a pre-chosen distance relative to said first position, said distance corresponding to a given mass of detritus in the rotor when at rest and with substantially all the fluid drained therefrom.
  • the invention thus provides a means of determining a specific change in the weight of the rotor due to the accumulation of detritus.
  • the means for sensing the position of the rotor may take the form of a magnet associated with the support means and a sensor, for example of the Hall-effect type, mounted externally or internally of the casing.
  • the spring is preferably of controlled compression characteristics so that the extent to which it is compressed will reflect (any increase in) the weight of the rotor when at rest on the support means.
  • the casing is preferably oriented in use so that the axis of rotation of the rotor is in a sensibly vertical plane, the spring means serving to bias the support means upwards against gravity.
  • the exact vertical position of the support means when the rotor is at rest and with substantially all the fluid drained therefrom at any time depends on the total mass of the rotor, which comprises the empty rotor mass plus the mass of any accumulated detritus entrapped within it.
  • a normally open switch may be used, closure of the switch indicating that a particular weight has been reached. It is only necessary to briefly interrupt the fluid flow, allow the rotor to drain and then check if the switch means has been actuated.
  • a plurality of switches may be used, each corresponding to a different pre-chosen mass of detritus in the at rest, substantially fluid free rotor.
  • the cleaner In use, the cleaner is run for a specified period of, for example, 6, 12, 24 or 48 hours and the oil supply is interrupted. After a suitable interval to allow oil to drain and the rotor to reach a complete standstill, the position of the rotor relative to its known, empty position is determined by the sensing means. Preferably the rotor is provided with a one-way valve to allow air to enter the rotor to accelerate drainage. Because a switch is used the indication will be of the "go" or "no go" variety; the rotor will either be full or not. A decision on replacement/overhaul of the cleaner can then be taken. Other types of switch means may be employed of course without departing from the scope of this invention. If more than one such means is provided, indications such as half full can be obtained.
  • Figure 1 is a schematic cross-sectional side view of a cleaner in accordance with the invention
  • Figure 2 is a similar view of another cleaner in accordance with the invention.
  • the cleaner has a base casting 1 and a cover 2.
  • the base casting has a fluid (oil) inlet 3, a cut-off valve shuttle 4 and a cut-off valve plug 5.
  • the base casting also has an outlet orifice 6.
  • a centrifuge rotor 10 is freely rotatably mounted inside the cover on a spindle 11, the upper end of which is located in the radial direction by a recess inside a bush 12 extending outwardly of the cover 2.
  • the upper end of the rotor is provided with a thrust bearing 31.
  • the lower end of the spindle 11 is screw threaded into a correspondingly threaded hole inside a boss 13 which projects from and is part of the base casting.
  • This lower part of the spindle 11 contains a fluid entry passage 14 which extends up into the rotor, the inside of which receives fluid via cross drillings 15 in the spindle.
  • the rotor itself contains an internal sleeve 16 around the spindle 11, fluid from the latter flowing up until it reaches ports 17 which allow it to enter the upper region of the rotor. After being centrifuged in the rotor, the fluid escapes into the sleeve 16 through orifices 17A located below an internal baffle 17B. From the orifices 17A the oil flows downwardly into the base area 19, from which it escapes into the casing 18 and thence to the outlet ⁇ via a pair of tangentially directed nozzles, (not shown in detail, but whose location is indicated at 19A).
  • the operation of the device is entirely conventional in that fluid passing through it is subjected to a combination of centrifugal force and sharp changes in direction before it finally escapes to the inside 18 of the cover and thence to the outlet 6. Relatively heavy detritus build up as a cake on the wall of the rotor.
  • Below the rotor there is an axially displaceable support member 20. Beneath the support member there is a helical spring 21, one end of which seats against the base casting 1 and the opposite end of which biasses the support member upwards to engage the lower regions of the rotor when the latter drops to its at rest position.
  • Attached to the support member is an arm 22 carrying a magnet 23, the latter being located close to the side wall 24 of the base casting 1.
  • On the outer surface of the side wall 24 there is a Hall-effect sensor 25 which is connected to a control panel (not shown) by a cable 26.
  • the support member is free to move to a limited extent in the axial direction, it is constrained in a radial direction by fastening screws 27. These prevent rotation of the arm/magnet relative to the sensor 25.
  • the spring 21 is calibrated so that its degree of axial compression corresponds to a known rotor weight including the weight of detritus trapped in the rotor. For example, by appropriate selection of the spring, a 5 mm compression may correspond to 5 kg of detritus in the rotor.
  • This routine lends itself to automation since it is possible to programme the control panel to shut off the fluid supply by means of a solenoid valve, wait a prechosen time for drainage to finish and then check the amount of detritus. The amount may be displayed by means of "go" and "no go” lamps colour coded to indicate at a glance the current status of the cleaner .
  • Figure 2 is identical to figure 1 except for the use of a simple switch 30 to detect when the total mass exceeds a pre-chosen limit corresponding to a "cleaner full" condition.
  • the switch 30 may be an electrical contact or it may be for example a microswitch.
  • the arm 22 is of reduced length; the magnet 23, and the sensor 25 are not necessary in this case.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

Un appareil à centrifugation pour le nettoyage de liquides tels que l'huile comprend des moyens (23, 25) permettant de déterminer le poids du détritus accumulé dans le rotor (10) en détectant le degré de compression d'un ressort (21) par ce dernier lorsqu'il est au repos, et après vidange pratiquement totale du liquide.
PCT/GB1992/000431 1991-03-15 1992-03-11 Filtres perfectionnes WO1992016303A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919105582A GB9105582D0 (en) 1991-03-15 1991-03-15 Improved filters
GB9105582.2 1991-03-15

Publications (1)

Publication Number Publication Date
WO1992016303A1 true WO1992016303A1 (fr) 1992-10-01

Family

ID=10691680

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000431 WO1992016303A1 (fr) 1991-03-15 1992-03-11 Filtres perfectionnes

Country Status (2)

Country Link
GB (1) GB9105582D0 (fr)
WO (1) WO1992016303A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023589A1 (fr) * 1995-02-02 1996-08-08 The Glacier Metal Company Limited Dispositif centrifuge de nettoyage d'un liquide
WO1997016255A1 (fr) * 1995-11-03 1997-05-09 Jacob Kalleberg Separateur destine a la separation de deux liquides
US6074336A (en) * 1996-03-19 2000-06-13 The Glacier Metal Company Limited Separator with control valve and interlock device
EP1066884A3 (fr) * 1999-07-07 2002-02-06 Fleetguard, Inc. Rotor jetable à entraínement automatique pour centrifugeuse
US6579220B2 (en) 1999-07-07 2003-06-17 Fleetguard, Inc. Disposable, self-driven centrifuge
US6793615B2 (en) 2002-02-27 2004-09-21 Fleetguard, Inc. Internal seal for a disposable centrifuge
US6821241B2 (en) * 2002-07-30 2004-11-23 Fleetguard, Inc. Centrifuge rotor with low-pressure shut-off and capacity sensor
US6974408B2 (en) * 2002-09-04 2005-12-13 Hengst Gmbh & Co. K.G. Centrifuge for the purification of lubricating oil of an internal-combustion engine
EP1623766A1 (fr) * 2004-07-30 2006-02-08 Mann+Hummel Gmbh Séparateur centrifugeuse
GB2417701A (en) * 2004-09-02 2006-03-08 Ford Global Tech Llc Centrifugal filter with annular motor
US7377893B2 (en) * 2005-04-25 2008-05-27 Fleetguard, Inc. Hero-turbine centrifuge with flow-isolated collection chamber
CN114412643A (zh) * 2022-01-25 2022-04-29 中国航发贵阳发动机设计研究所 集合油气分离功能的多级回油装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007701B (de) * 1953-06-18 1957-05-02 Siemens Ag Anordnung zur Bestimmung des Fuellungsgrades von Zentrifugen
DE1101295B (de) * 1959-05-15 1961-03-02 Siemens Ag Haengezentrifuge mit einer Einrichtung zur selbsttaetigen UEberwachung des Fuellvorganges
US4221323A (en) * 1978-12-07 1980-09-09 The Glacier Metal Company Limited Centrifugal filter with external service indicator
JPS5775164A (en) * 1980-10-29 1982-05-11 Toshiba Corp Centrifugal clarifier
SU986506A1 (ru) * 1981-01-04 1983-01-07 Владимирский Научно-Исследовательский Конструкторско-Технологический Институт Тракторных И Комбайновых Двигателей Устройство дл определени толщины осадка в роторе центробежного маслоочистител
GB2181675A (en) * 1985-10-22 1987-04-29 Atomic Energy Authority Uk Flow centrifuge for liquids-solids separation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007701B (de) * 1953-06-18 1957-05-02 Siemens Ag Anordnung zur Bestimmung des Fuellungsgrades von Zentrifugen
DE1101295B (de) * 1959-05-15 1961-03-02 Siemens Ag Haengezentrifuge mit einer Einrichtung zur selbsttaetigen UEberwachung des Fuellvorganges
US4221323A (en) * 1978-12-07 1980-09-09 The Glacier Metal Company Limited Centrifugal filter with external service indicator
JPS5775164A (en) * 1980-10-29 1982-05-11 Toshiba Corp Centrifugal clarifier
SU986506A1 (ru) * 1981-01-04 1983-01-07 Владимирский Научно-Исследовательский Конструкторско-Технологический Институт Тракторных И Комбайновых Двигателей Устройство дл определени толщины осадка в роторе центробежного маслоочистител
GB2181675A (en) * 1985-10-22 1987-04-29 Atomic Energy Authority Uk Flow centrifuge for liquids-solids separation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 154 (C-119)(1032) 14 August 1982 & JP,A,57 075 164 ( TOKYO SHIBAURA DENKI K.K. ) 11 May 1982 *
SOVIET INVENTIONS ILLUSTRATED Section PQ, Week K44, 14 December 1983 Derwent Publications Ltd., London, GB; Class P41, AN 83-806601/44 & SU,A,986 506 (VLADIMIR TRACCOMBN) 7 January 1983 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023589A1 (fr) * 1995-02-02 1996-08-08 The Glacier Metal Company Limited Dispositif centrifuge de nettoyage d'un liquide
WO1996023590A1 (fr) * 1995-02-02 1996-08-08 The Glacier Metal Company Limited Systeme de nettoyage de liquide comprenant un filtre de contre-rinçage et un dispositif de nettoyage centrifuge
US5906733A (en) * 1995-02-02 1999-05-25 The Glacier Metal Company Limited Liquid cleaning system including back-flushing filter and centrifugal cleaner therefor
WO1997016255A1 (fr) * 1995-11-03 1997-05-09 Jacob Kalleberg Separateur destine a la separation de deux liquides
US6074336A (en) * 1996-03-19 2000-06-13 The Glacier Metal Company Limited Separator with control valve and interlock device
EP1066884A3 (fr) * 1999-07-07 2002-02-06 Fleetguard, Inc. Rotor jetable à entraínement automatique pour centrifugeuse
US6579220B2 (en) 1999-07-07 2003-06-17 Fleetguard, Inc. Disposable, self-driven centrifuge
US6793615B2 (en) 2002-02-27 2004-09-21 Fleetguard, Inc. Internal seal for a disposable centrifuge
US6821241B2 (en) * 2002-07-30 2004-11-23 Fleetguard, Inc. Centrifuge rotor with low-pressure shut-off and capacity sensor
US6974408B2 (en) * 2002-09-04 2005-12-13 Hengst Gmbh & Co. K.G. Centrifuge for the purification of lubricating oil of an internal-combustion engine
EP1623766A1 (fr) * 2004-07-30 2006-02-08 Mann+Hummel Gmbh Séparateur centrifugeuse
US7338426B2 (en) 2004-07-30 2008-03-04 Mann & Hummel Gmbh Centrifugal separator with rotation detector
GB2417701A (en) * 2004-09-02 2006-03-08 Ford Global Tech Llc Centrifugal filter with annular motor
GB2417701B (en) * 2004-09-02 2008-02-13 Ford Global Tech Llc Centrifugal filter
US7377893B2 (en) * 2005-04-25 2008-05-27 Fleetguard, Inc. Hero-turbine centrifuge with flow-isolated collection chamber
CN114412643A (zh) * 2022-01-25 2022-04-29 中国航发贵阳发动机设计研究所 集合油气分离功能的多级回油装置

Also Published As

Publication number Publication date
GB9105582D0 (en) 1991-05-01

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