EP0226886B1 - Centrifuge - Google Patents

Centrifuge Download PDF

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Publication number
EP0226886B1
EP0226886B1 EP86116668A EP86116668A EP0226886B1 EP 0226886 B1 EP0226886 B1 EP 0226886B1 EP 86116668 A EP86116668 A EP 86116668A EP 86116668 A EP86116668 A EP 86116668A EP 0226886 B1 EP0226886 B1 EP 0226886B1
Authority
EP
European Patent Office
Prior art keywords
information
rotor
coding
centrifuge
rotors
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
EP86116668A
Other languages
German (de)
English (en)
Other versions
EP0226886A1 (fr
EP0226886B2 (fr
Inventor
Alfred Grassl
Erhard Knorr
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.)
Kontron Instruments Holding NV
Original Assignee
Kontron Instruments Holding NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4291022&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0226886(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kontron Instruments Holding NV filed Critical Kontron Instruments Holding NV
Publication of EP0226886A1 publication Critical patent/EP0226886A1/fr
Publication of EP0226886B1 publication Critical patent/EP0226886B1/fr
Application granted granted Critical
Publication of EP0226886B2 publication Critical patent/EP0226886B2/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
    • B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
    • B04B13/003—Rotor identification systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges

Definitions

  • Modern centrifuges therefore usually have a corresponding rotor-specific overspeed protection, e.g. an optical scanning of a light / dark disk using an optocoupler or similar method or magnetic interrogation of a toothed disk or of permanent magnets.
  • a corresponding rotor-specific overspeed protection e.g. an optical scanning of a light / dark disk using an optocoupler or similar method or magnetic interrogation of a toothed disk or of permanent magnets.
  • the air resistance depending on the size, shape, surface and speed of the rotor used must be taken into account when controlling the temperature. This means that the cooling capacity must be adjusted accordingly. This is accomplished by a compensation circuit. The correct compensation value can be found in the corresponding nomograms of the individual rotors.
  • the magnets are arranged radially around the axis of rotation. Some of the magnets are used for speed monitoring and the other for coding. Both subsets differ in polarity.
  • the centrifuge shown in FIG. 1 is a fixed-angle centrifuge in which the sample vessels 1 are arranged at a certain angle of inclination in the rotor 2.
  • the rotor On its underside, the rotor carries a carrier ring 3 for receiving the coding.
  • two sensors 4, 4a are arranged opposite it for scanning the coding.
  • the magnetic pins of sector d are facing outwards with their south poles. They are used for coding the speed.
  • the magnets rotating past the sensor generate pulses with a signal voltage of approximately 270 mVpp. These are superimposed on the output voltage (Fig. 4a).
  • the sensor 4 is connected to the inverting input of an operational amplifier 11.
  • the signal is amplified and inverted about 30 times in the operational amplifier 11 (FIG. 4b).
  • the other input of the amplifier 11 is supplied with a bias voltage by a potentiometer 12, which keeps the output at + 6 volts.

Landscapes

  • Centrifugal Separators (AREA)

Claims (1)

  1. Centrifugeuse comprenant: un rotor interchangeable qui présente un support d'information lié au rotor et destiné à porter une information détectable par machine, sous la forme d'une surface annulaire coaxiale munie de barreaux magnétiques à aimantation permanente qui sont répartis sur des positions de la surface annulaire pour constituer une information codée; et un dispositif de lecture qui comprend des détecteurs destinés à explorer le support d'information et un circuit électronique destiné à traiter l'information reçue, les barreaux magnétiques à aimantation permanente étant dirigés vers les détecteurs, les uns par leur pôle nord et les autres par leur pôle sud, caractérisée en ce que différentes informations sont codées sous la forme de différentes polarités des barreaux magnétiques à aimantation permanente.
EP86116668A 1985-12-11 1986-12-01 Centrifuge Expired - Lifetime EP0226886B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH528585 1985-12-11
CH5285/85 1985-12-11

Publications (3)

Publication Number Publication Date
EP0226886A1 EP0226886A1 (fr) 1987-07-01
EP0226886B1 true EP0226886B1 (fr) 1990-08-29
EP0226886B2 EP0226886B2 (fr) 1994-01-05

Family

ID=4291022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116668A Expired - Lifetime EP0226886B2 (fr) 1985-12-11 1986-12-01 Centrifuge

Country Status (5)

Country Link
US (1) US4772254A (fr)
EP (1) EP0226886B2 (fr)
JP (1) JPS62140659A (fr)
DE (1) DE3673782D1 (fr)
FI (1) FI864811A (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857811A (en) * 1988-03-31 1989-08-15 E. I. Du Pont De Nemours And Company Evacuation pump control for a centrifuge instrument
DE3815449C2 (de) * 1988-05-06 1994-06-01 Sigma Laborzentrifugen Gmbh Zentrifuge, insbesondere Laborzentrifuge
SU1734865A1 (ru) * 1988-07-18 1992-05-23 Московское научно-производственное объединение "Биофизприбор" Устройство дл контрол центрифуги
DE69026039T2 (de) * 1989-12-08 1996-08-22 Hitachi Koki Kk System zum Festlegen der Betriebsbedingungen von Zentrifugenrotoren
FR2657793B1 (fr) * 1990-02-06 1992-04-24 Jouan Appareil de centrifugation a rotor amovible et a moyens d'identification des rotors.
DE4037458C2 (de) * 1990-11-24 1997-08-28 Heraeus Instr Gmbh Zentrifuge und Verfahren zum Betreiben der Zentrifuge
US5235864A (en) * 1990-12-21 1993-08-17 E. I. Du Pont De Nemours And Company Centrifuge rotor identification system based on rotor velocity
US5221250A (en) * 1991-01-07 1993-06-22 Beckman Instruments, Inc. Coding of maximum operating speed on centrifuge rotors and detection thereof
DE4208059A1 (de) * 1992-03-13 1993-09-16 Hermle Berthold Maschf Ag Zentrifuge
US5338283A (en) * 1992-10-09 1994-08-16 E. I. Du Pont De Nemours And Company Centrifuge rotor identification system
KR940013616A (ko) * 1992-12-14 1994-07-15 미리암 디. 메코너헤이 원심분리기 회전자 속도 제한 방법 및 제어 시스템
JP2514554B2 (ja) 1992-12-28 1996-07-10 株式会社久保田製作所 遠心機
DE4420562C2 (de) * 1994-06-13 1999-11-18 Busch Dieter & Co Prueftech Drehzahlmeßgerät
US5518493A (en) * 1994-07-07 1996-05-21 Beckman Instruments, Inc. Automatic rotor identification based on a rotor-transmitted signal
US5786898A (en) * 1996-08-23 1998-07-28 Fitzpatrick; Stephen T. Structure and method for centrifugal sedimentation particle size analysis of particles of lower density than their suspension medium
DE19723984C2 (de) * 1997-06-06 2000-02-17 Kendro Lab Prod Gmbh Auswechselbarer Zentrifugen-Rotor mit wenigstens einem Magnetkörper als Informationsträger sowie ein Verfahren zum Einbringen eines Magnetkörpers
FR2799395B1 (fr) * 1999-10-08 2001-12-21 Jouan Centrifugeuse a rotor presentant au moins un logement de reception d'un produit a centrifuger et un couvercle associe de fermeture, et ensemble comprenant une telle centrifugeuse et plusieurs rotors
US6368265B1 (en) 2000-04-11 2002-04-09 Kendro Laboratory Products, L.P. Method and system for energy management and overspeed protection of a centrifuge
JP3951582B2 (ja) * 2000-10-06 2007-08-01 日立工機株式会社 遠心分離機
US6572523B2 (en) 2001-04-05 2003-06-03 Fleetguard, Inc. Centrifuge rotation indicator
US6589151B2 (en) * 2001-04-27 2003-07-08 Hitachi Koki Co., Ltd. Centrifugal separator capable of reading a rotor identification signal under different rotor rotation conditions
JP3956646B2 (ja) * 2001-05-21 2007-08-08 日立工機株式会社 遠心機
JP5035632B2 (ja) * 2008-05-08 2012-09-26 日立工機株式会社 遠心分離機
US8182409B2 (en) * 2008-09-09 2012-05-22 The Western States Machine Company Centrifuge comprising magnetically coupled rotating basket
DE102008042971A1 (de) 2008-10-20 2010-04-22 Agilent Technologies Inc., Santa Clara Zentrifuge mit Magneteinrichtung
DE102011100044B4 (de) * 2011-04-29 2017-10-05 Thermo Electron Led Gmbh Sensoranordnung zur Identifikation eines in eine Zentrifuge eingesetzten Rotors und Zentrifuge
CN104338624B (zh) * 2013-08-07 2017-03-15 上海安亭科学仪器厂 一种离心机转子状态自动识别系统
CN104588219A (zh) * 2014-12-30 2015-05-06 上海力申科学仪器有限公司 离心机转子
GB2550185B (en) * 2016-05-12 2019-08-14 Cambustion Method to improve classification of particles in a gas stream by reducing thermal convective instabilities
CN115400886B (zh) * 2021-05-28 2024-10-15 青岛海特生物医疗有限公司 离心机转子识别系统及用于离心机转子识别的方法、装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8324912D0 (en) * 1983-09-17 1983-10-19 Fisons Plc Magnetic device
US4551715A (en) * 1984-04-30 1985-11-05 Beckman Instruments, Inc. Tachometer and rotor identification apparatus for centrifuges
US4663601A (en) * 1984-11-21 1987-05-05 Xomox Corporation Magnetic switch housing assembly

Also Published As

Publication number Publication date
FI864811A (fi) 1987-06-12
FI864811A0 (fi) 1986-11-26
US4772254A (en) 1988-09-20
JPS6333911B2 (fr) 1988-07-07
JPS62140659A (ja) 1987-06-24
DE3673782D1 (de) 1990-10-04
EP0226886A1 (fr) 1987-07-01
EP0226886B2 (fr) 1994-01-05

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