EP1268075A1 - Open jet centrifuge with monitoring means, and method for monitoring the same - Google Patents
Open jet centrifuge with monitoring means, and method for monitoring the sameInfo
- Publication number
- EP1268075A1 EP1268075A1 EP01938031A EP01938031A EP1268075A1 EP 1268075 A1 EP1268075 A1 EP 1268075A1 EP 01938031 A EP01938031 A EP 01938031A EP 01938031 A EP01938031 A EP 01938031A EP 1268075 A1 EP1268075 A1 EP 1268075A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- centrifuge
- monitoring
- sensor
- free jet
- 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.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000010687 lubricating oil Substances 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000007257 malfunction Effects 0.000 abstract description 8
- 239000012065 filter cake Substances 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000012806 monitoring device Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 241001073224 Baeopogon indicator Species 0.000 description 1
- XOJVVFBFDXDTEG-UHFFFAOYSA-N Norphytane Natural products CC(C)CCCC(C)CCCC(C)CCCC(C)C XOJVVFBFDXDTEG-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
-
- 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
- B04B11/043—Load indication with or without control arrangements
-
- 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
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B7/06—Safety devices ; Regulating
-
- 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
-
- 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
-
- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
Definitions
- the invention relates to a method for monitoring a system with a free jet centrifuge according to the preamble of claim 1.
- the invention also relates to free jet centrifuges with monitoring devices according to the preamble of claims 6 and 9.
- FIG. 1 of the document shows a centrifuge rotor which is mounted on an axis and has axial play.
- the nozzles 48 are oriented obliquely downward, so that the operation of the centrifuge produces an axial force component which presses the rotor against a weight ring against the contact force attached to the upper axial stop for the rotor. A malfunction is indicated if the rotor leaves the contact ring during operation.
- the cause of the error when leaving the contact ring cannot be determined beyond doubt by such a design of the monitoring device. This can be caused, for example, by an increase in the weight of the centrifuge due to the filter cake building up, and a blockage of the nozzles or a sluggishness of the slide bearings 30, 28 used.
- the axial force component which is generated by the nozzle position, is superimposed by an axial force due to the oil pressure, which results from the fact that the liquid to be centrifuged flows into the rotor from below and pushes it up on the axis. In the event of an impermissibly high pressure increase in the liquid, this can result in the rotor being pressed against the contact ring despite malfunctions and the control device thereby failing in terms of its function.
- control device described is not suitable if the centrifuge rotor is axially fixed in the housing, as in WO 99/54 051 (see FIG. 2).
- This design enables the use of ball bearings, which leads to a low resistance to rotation of the rotor and a reduction in the leakage current at the bearings.
- such a centrifuge design must also be monitored depending on the application.
- the object of the invention is therefore to provide methods and devices for monitoring the function of a free jet centrifuge which reliably determine malfunctions of the centrifuge. This object is solved by claims 1, 6 and 9.
- the method according to the invention is suitable for monitoring a system which in any case contains a free jet centrifuge and the liquid to be centrifuged.
- the system can also contain other components.
- the combination of centrifuge and liquid filter can also be considered as a system, the centrifuge being provided in the bypass flow for separating the finest suspended particles.
- Such an application arises, for. B. in the automotive field for cleaning the lubricating oil.
- the method is characterized in that the monitoring can take place independently of an axial force which acts on the rotor of the centrifuge along its axis of rotation. This has the advantage that the monitoring can take place independently of the interaction of the components generating the axial force.
- Malfunctions can thus be determined without having to consider the mechanical properties of the centrifuge, such as bearing wear or nozzle wear, and the course of the pressure of the liquid to be centrifuged. In particular, the determination is not dependent on the operation of the centrifuge, since the axial force component generated by the nozzles is not necessary. About the degree of filling of the centrifuge and thus its weight can, for. B. during the standstill of the centrifuge, a statement can be made, whereby disturbances that could distort the result can be largely excluded.
- the monitoring signal can be passed on to corresponding output devices which indicate malfunctions. This can in the automotive field, for. B. Indicator lights on the dashboard. However, the evaluation of the measurement signals by the motor electronics is also conceivable.
- the monitoring is carried out by a pressure sensor which generates a signal depending on the axial force acting on the rotor.
- a piezoelectric sensor can be used here.
- the measurement of the axial force is not dependent on the axial force generated by the nozzles.
- the axial force can be determined during the standstill of the centrifuge, whereby the advantages mentioned are achieved.
- a measurement can also be carried out during the operation of the centrifuge, whereby an axial force component of the nozzles must be taken into account if these are inclined.
- a purely horizontal effect of the nozzles is also conceivable. This has the advantage that the propulsion of the nozzles can only be used to drive the centrifuge, which means that higher speeds can be achieved.
- the pressure sensor can continue to be Fluids are determined.
- This can e.g. B. done by sensors that are already in the system, for. B. the internal combustion engine are provided. These values are evaluated anyway by the motor electronics and can be supplemented by the measured values determined directly on the centrifuge.
- other sensors in the system can also be used to make the most accurate statements possible about the condition of the centrifuge.
- a speed sensor which is designed in particular as an optoelectric sensor.
- An alternative embodiment of the sensor would be, for. B. a tachometer generator.
- the speed of the rotor can be determined with the aid of a speed sensor. This measurement signal can be evaluated as such. B. can be monitored whether the centrifuge reaches its nominal speed.
- additional statements are possible. For example, the startup behavior of the centrifuge can be determined using a time recording. The build-up of the filter cake in the rotor can be indirectly monitored via the run-up behavior, since the increasing inertia of the rotor leads to an increase in the run-up time.
- a comparison of the run-up time and the rotor weight allows additional statements about malfunctions of the centrifuge. For example, an increase in the bearing friction or a blockage of the nozzles could be recognized, since the run-up time would increase without an increase in the weight of the rotor.
- the applied pressure of the liquid to be centrifuged can also be evaluated here in order to increase the reliability of the monitoring.
- the time required for the centrifuge when changing between certain characteristic operating states can also be determined. Additional sensors are required for this, which indicate that characteristic operating states have been reached or left.
- B Signals about the load state of the engine, its oil requirement or the delivery rate of the oil pump in the lubricating oil circuit are considered. It is advantageous to apply the monitoring method to the liquid to be centrifuged itself.
- An important parameter in the functioning of the centrifuge is the viscosity of this liquid. So z. B. the lubricating oil of an internal combustion engine depending on the operating temperature and the aging of the lubricating oil, the viscosity. In such a case, the monitoring of the viscosity can be used to achieve individual oil change intervals, whereby the intervals can be extended to an optimal level. This increases both the economy in operation and the environmental compatibility of the internal combustion engine under consideration.
- the viscosity of the liquid must also be considered as a criterion for the function of the centrifuge. In this way, the influence of viscosity on the run-up behavior of the centrifuge can also be taken into account.
- a free jet centrifuge which is suitable for carrying out the described method is claimed in claim 6.
- the rotor of the centrifuge is axially fixed in at least one direction, the axial fixing of the rotor being used for a pressure sensor which can determine the axial force of the rotor in the direction of the axial fixing.
- the measured value determined in this way can be processed in the manner already described.
- the rotor is mounted in the housing without play in the axial direction.
- This is advantageous because when the rotor is at a standstill, an axial force acts downwards and when the rotor is operating, axial forces can also occur upwards. These are generated by a possible inclination of the drive nozzles of the rotor downwards and by the resulting oil pressure acting on the inner walls of the rotor.
- the axial force can also act downwards when the rotor is in operation.
- the system described here can therefore also function independently of the centrifuge acting on the rotor Determine the direction of the axial force.
- it is also possible to generate a continuous measurement signal since this does not depend on the axial force component generated by the inclination of the nozzles, but only has to consider this axial component if it arises.
- the signal is also continuous with regard to the measured value. It can thus z. B. the structure of the filter cake can be followed, whereby z. B. a conclusion on oil change intervals is possible.
- the centrifuge rotor is supported in the housing by a ball bearing. This can absorb the axial forces of the rotor and pass them on to the pressure sensor. This also reduces friction, which means that higher speeds can be achieved.
- a speed sensor can be attached to the free jet centrifuge for monitoring. This is integrated at a suitable point in the housing.
- a tachometer generator should e.g. B. be provided at one of the bearing points of the rotor, on the one hand to establish in the housing and on the other hand to connect to the rotating rotor.
- the measurement signal of the speed sensor can be processed in the manner already described.
- Figure 1 shows the schematic structure of a free jet centrifuge in section, on which a pressure sensor and a speed sensor are attached, and
- Figure 2 shows the arrangement of a free jet centrifuge in the lubricating oil circuit of an internal combustion engine as a block diagram.
- a free jet centrifuge is shown schematically as z. B. for cleaning lubricating oil of an internal combustion engine is used.
- the direction of flow of the fluid is indicated by arrows.
- the free jet centrifuge 10 has a housing 11 which is equipped with an inlet 12 and an outlet 13. The housing does not have to be designed separately.
- the rotor of the free jet centrifuge can be installed in other structures of the internal combustion engine just as well as, for. B. the oil pan.
- a rotor 14 of the centrifuge is mounted in a sliding bearing 16 with a central tube 15.
- the center tube simultaneously represents the rotor inlet 17 through which the oil enters the rotor.
- Drive nozzles 18 serve the oil as a rotor outlet.
- a bearing seat 19 for a ball bearing 20 is provided on the outside of the rotor. This is fixed to the rotor with its outer ring.
- the inner ring of the ball bearing 20 is provided with an intermediate piece 21 which is connected to a piezoelectric sensor 22. This sensor is supported in the housing 11. As a result, the sensor can absorb the axial force caused by the rotor and sends the corresponding axial force signal f to evaluation electronics 23.
- An optoelectric sensor 24 is also provided in the housing. This can generate a speed signal n via a marking 25 on the rotor. This is processed together with a temperature signal t in the evaluation electronics 23.
- the temperature signal t comes from a temperature sensor 26 for determining the Oil temperature, which is attached to the inlet 12.
- the evaluation electronics outputs a control signal s, which can be used to output an error.
- FIG. 2 shows the integration of the free jet centrifuge 10 in a lubricating oil circuit 27 of an internal combustion engine 28.
- the signals f, t already described converge in a motor control 29 together with a pressure signal p of the lubricating oil, a time signal z and further motor parameters a, b.
- the engine parameters can be the speed of the internal combustion engine, the air requirement of the internal combustion engine, the speed or delivery rate of the oil pump of the lubricating oil circuit or other parameters.
- the signals are processed in the engine control 29 and passed on to the dashboard 30 as control signal s.
- a pump 31, which is provided in the lubricating oil circuit 27, ensures a sufficient supply of the lubrication points (not shown).
- the free jet centrifuge 10 is arranged in the bypass flow to an oil filter 32.
- the oil supply to the free jet centrifuge can be regulated via a control valve 33.
- the various measurement signals can be stored as a map in the engine control 29. This makes it possible to assess that the free jet centrifuge is functioning properly.
- relationships between individual measurement signals can be stored in the controller.
- the relationship between ramp-up time and loading is an example. This results in a certain relationship between z and f.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Centrifugal Separators (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10016876A DE10016876A1 (en) | 2000-04-05 | 2000-04-05 | Open jet centrifuge with monitoring means and method for monitoring them |
DE10016876 | 2000-04-05 | ||
PCT/EP2001/003293 WO2001076760A1 (en) | 2000-04-05 | 2001-03-22 | Open jet centrifuge with monitoring means, and method for monitoring the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1268075A1 true EP1268075A1 (en) | 2003-01-02 |
EP1268075B1 EP1268075B1 (en) | 2004-11-24 |
Family
ID=7637637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01938031A Expired - Lifetime EP1268075B1 (en) | 2000-04-05 | 2001-03-22 | Open jet centrifuge with monitoring means, and method for monitoring the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030078152A1 (en) |
EP (1) | EP1268075B1 (en) |
AT (1) | ATE283114T1 (en) |
DE (2) | DE10016876A1 (en) |
WO (1) | WO2001076760A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040194511A1 (en) * | 2002-02-01 | 2004-10-07 | Chih-Hsing Cheng | Sol-gel-derived halogen-doped glass |
DE102004037414A1 (en) * | 2004-07-30 | 2006-03-23 | Mann + Hummel Gmbh | centrifugal |
GB2418988B (en) * | 2004-10-06 | 2008-09-17 | Ford Global Tech Llc | A soot management system for an engine |
SE528701C2 (en) * | 2005-06-08 | 2007-01-30 | Alfa Laval Corp Ab | Centrifugal separator for purification of a gas |
DE102012014474A1 (en) * | 2012-07-21 | 2014-01-23 | Daimler Ag | Centrifugal separator device for filtering blow-by gas in crank case ventilation device in motor car, has plate separator for filtering fluid, and monitoring and diagnostic apparatus for monitoring or diagnosing operability of separator |
CN103639072B (en) * | 2013-12-04 | 2015-05-27 | 浙江福隆汽车零部件有限公司 | Multifunctional centrifugal oil cleaner |
KR101470837B1 (en) * | 2014-04-08 | 2014-12-10 | 신흥정공(주) | Centrifugal filter with water separation structure and purifier system using the same |
WO2016161578A1 (en) * | 2015-04-08 | 2016-10-13 | Mann+Hummel Gmbh | Centrifugal separator |
GB201519346D0 (en) * | 2015-11-02 | 2015-12-16 | Pacy Teresa J H | Separator |
DK3290093T3 (en) | 2016-09-06 | 2022-07-11 | Alfa Laval Corp Ab | PROCEDURE FOR PURIFYING FUEL OIL FOR A DIESEL ENGINE |
WO2018148678A1 (en) * | 2017-02-13 | 2018-08-16 | Woodway Usa, Inc. | Oil filter centrifuge rotation indicator |
DE102017211979A1 (en) * | 2017-07-13 | 2019-01-17 | Bayerische Motoren Werke Aktiengesellschaft | Method for monitoring a crankcase ventilation device |
CN109854335A (en) * | 2019-03-26 | 2019-06-07 | 广西华原过滤系统股份有限公司 | A kind of new oil rotor filter and method with rotation speed monitoring function |
EP3983659B1 (en) * | 2019-06-12 | 2022-11-30 | Innio Jenbacher GmbH & Co OG | Internal combustion engine |
DE102019131509A1 (en) * | 2019-11-21 | 2021-05-27 | Gea Mechanical Equipment Gmbh | Nozzle monitoring device for a nozzle centrifuge, nozzle centrifuge, and method for monitoring nozzles of a nozzle centrifuge |
CN114733655B (en) * | 2022-06-13 | 2022-08-19 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Detection device and detection method for centrifugal blood component separator |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE922757C (en) * | 1952-03-14 | 1955-01-24 | Siemens Ag | Arrangement for determining the filling level of centrifuges |
DE1256160B (en) * | 1958-04-02 | 1967-12-07 | Heinrich Hinz Elmasch Und Appb | Method for determining the degree of filling of centrifuges, in particular sugar centrifuges |
GB1035542A (en) * | 1964-04-02 | 1966-07-13 | Glacier Co Ltd | Improvements in or relating to centrifugal separators |
DE2435733A1 (en) * | 1974-07-25 | 1976-02-12 | Braunschweigische Masch Bau | HANGING CENTRIFUGE FOR INTERMITTING OPERATION |
DE2559343C2 (en) * | 1975-12-31 | 1983-10-06 | Fa. Andreas Hettich, 7200 Tuttlingen | Arrangement for recording a maximum permissible speed of a replaceable rotor of a centrifuge |
GB1507742A (en) * | 1976-06-25 | 1978-04-19 | Glacier Metal Co Ltd | Centrifugal filters |
US4221323A (en) * | 1978-12-07 | 1980-09-09 | The Glacier Metal Company Limited | Centrifugal filter with external service indicator |
DE3241624C2 (en) * | 1982-11-11 | 1986-06-26 | Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover | Measuring method and measuring device for determining the solids loading of the drum of a centrifuge |
SU1554982A1 (en) * | 1987-05-18 | 1990-04-07 | Коломенский тепловозостроительный завод им.В.В.Куйбышева | Centrifuge for cleaning oil |
DE3818594A1 (en) * | 1988-06-01 | 1989-12-07 | Hermle Kg Berthold | CENTRIFUGE |
JPH05261316A (en) * | 1992-03-23 | 1993-10-12 | Toshiba Corp | Collected amount monitor of solid/liquid separator |
JPH08177447A (en) * | 1994-12-22 | 1996-07-09 | Komatsu Ltd | Centrifugal separating filter |
DE19911212A1 (en) * | 1999-03-12 | 2000-09-14 | Mann & Hummel Filter | Shaft bearing with spherical cap |
-
2000
- 2000-04-05 DE DE10016876A patent/DE10016876A1/en not_active Withdrawn
-
2001
- 2001-03-22 AT AT01938031T patent/ATE283114T1/en not_active IP Right Cessation
- 2001-03-22 EP EP01938031A patent/EP1268075B1/en not_active Expired - Lifetime
- 2001-03-22 DE DE50104606T patent/DE50104606D1/en not_active Expired - Fee Related
- 2001-03-22 WO PCT/EP2001/003293 patent/WO2001076760A1/en active IP Right Grant
-
2002
- 2002-10-04 US US10/264,250 patent/US20030078152A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0176760A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1268075B1 (en) | 2004-11-24 |
DE10016876A1 (en) | 2001-10-18 |
ATE283114T1 (en) | 2004-12-15 |
US20030078152A1 (en) | 2003-04-24 |
WO2001076760A1 (en) | 2001-10-18 |
DE50104606D1 (en) | 2004-12-30 |
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