EP0685266A1 - Rotor d'une centrifugeuse pour laboratoire - Google Patents

Rotor d'une centrifugeuse pour laboratoire Download PDF

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Publication number
EP0685266A1
EP0685266A1 EP95100796A EP95100796A EP0685266A1 EP 0685266 A1 EP0685266 A1 EP 0685266A1 EP 95100796 A EP95100796 A EP 95100796A EP 95100796 A EP95100796 A EP 95100796A EP 0685266 A1 EP0685266 A1 EP 0685266A1
Authority
EP
European Patent Office
Prior art keywords
rotor
operating data
specific
data
information carrier
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.)
Withdrawn
Application number
EP95100796A
Other languages
German (de)
English (en)
Inventor
Karl-Heinz Römer
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.)
Sigma Laborzentrifugen GmbH
Original Assignee
Sigma Laborzentrifugen 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 Sigma Laborzentrifugen GmbH filed Critical Sigma Laborzentrifugen GmbH
Publication of EP0685266A1 publication Critical patent/EP0685266A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a rotor for a laboratory centrifuge according to the features of the preamble of claim 1.
  • Laboratory centrifuges are usually equipped with interchangeable rotors, which in turn have exchangeable separation vessels in the peripherally arranged receptacles, each of which is filled with the mixture of substances to be broken down into its components by centrifugal forces.
  • a large number of different separating vessels are used here, which differ in their shape, but also in their mass.
  • different permissible maximum speeds apply to these, which must be taken into account in the context of the centrifuge drive.
  • laboratory centrifuges are equipped with systems for automatic Equipped with rotor identification, which enables the respective rotor type and thus its respective rotor-specific maximum speed to be identified, in order to avoid operating errors with the associated dangerous situations.
  • These systems consist of an information carrier attached to the rotor, through which the respective rotor-specific operating data are coded, and a device for rotor identification, which is intended for reading these operating data.
  • a certain design of the receptacles of the rotor each of which is set up or can be set up specifically for the separating vessel, means that the information carrier of the rotor is inevitably encoded with the operating data tailored to the particular separating vessels used, that is to say in particular that for the rotor including of the separation vessels used applicable maximum speed.
  • This maximum speed is transferred to the control of the centrifuge drive via the already existing device for rotor identification.
  • separating vessels or groups of separating vessels can be used in a receptacle via the setting of a particular receptacle form, which correspond to the maximum speed corresponding to this receptacle form and coded by the setting thereof, but also by inevitably linking the setting of a certain receptacle form with
  • the corresponding coding of the information carrier of the rotor practically precludes the dangerous consequences of operating errors, since an inadvertent insertion of a separating vessel which is unsuitable for the respectively coded maximum speed is excluded, which can be achieved in the simplest way by means of geometric criteria and in that with the change in the Form of recording is inevitably linked to a change in the respective coded maximum speed.
  • the only prerequisite is that each set of recordings corresponds to certain operating data, which are coded by setting the record form directly by means of the information carrier mentioned in a machine-readable manner for the device for rotor identification.
  • the features of claim 3 are directed, for example, to a constructive design of the information carrier of the rotor and of the device for rotor identification.
  • the operating data required to operate the laboratory centrifuge are encoded by a specific arrangement of magnetically or optically active elements and the device for rotor identification is accordingly designed as a magnetically or optically active sensor.
  • the optically or magnetically active elements mentioned are preferably arranged to be exchangeable, so that the coding can be changed in a simple manner. It is essential to the invention that the arrangement of the elements mentioned is associated with the setting of a specific form of the receptacle of the rotor in order to establish the link between a receptacle form and the coding of the operating data mentioned.
  • claims 4 to 7 are directed to a structurally simple implementation of the combination of recording form on the one hand and coding of the information carrier mentioned on the other.
  • at least one link designed as a disk-shaped base body is provided, on which locking tabs are formed, which extend into the individual receptacles of the rotor.
  • the backdrop is attached to the rotor in a suitable manner and an adjustment of the receiving shape is dependent on the geometric design of the locking tabs for example, the contours of the separation vessels used.
  • almost any geometric shapes of structures engaging in the respective receptacle can be produced, which are adapted to certain shapes of separating vessels in order to be able to provide the desired number of different receptacle forms.
  • the magnetic or optical elements mentioned at the outset are connected to the backdrop in a fixed but interchangeable manner, so that coding of the information carrier is inevitably associated with the insertion of the backdrop.
  • This coding can in turn be changed by several scenes that interact with one another in such a way that the coding is changed in a defined sense by the addition of a further backdrop.
  • the operation of the laboratory centrifuge when removing all or all of the backdrops should always be designed in such a way that operation is only possible at the lowest possible maximum speed.
  • each of the separating vessels is equipped with machine-readable devices which encode each separating vessel-specific data and which, when the separating vessel is inserted into the respective receptacle of the rotor, are automatically read in by the rotor's own reading devices and used to code the information carrier of the rotor.
  • machine-readable devices which encode each separating vessel-specific data and which, when the separating vessel is inserted into the respective receptacle of the rotor, are automatically read in by the rotor's own reading devices and used to code the information carrier of the rotor.
  • FIGS referred to is the rotor of a laboratory centrifuge in FIGS referred to, which is rotatably mounted about an axis 2.
  • the rotor 1 is in screw connection with a drive shaft 3 extending in the direction of the axis 2, which in turn is connected to a motor in a manner not shown in the drawing. 4 with a fixed housing part is designated, which is penetrated by the drive shaft 3.
  • FIG. 1 and 2 show a conventionally designed rotor, which - in a uniform circumferential distribution - is provided with four suspension places 5 of identical design, which - based on the disk-like base body of the rotor 1 - are U-shaped in the top view and open radially on the outside Recesses are formed.
  • the rotor shown is thus designed as a swivel cup rotor and 6 denotes the two hinge pins of each hanger space 5 which are coaxial to one another and are intended for hanging in each swivel cup.
  • the individual hanger places 5 together with hanging pins 6 are dimensioned such that different types of swivel cups can be used.
  • 1 and 2 in this context show a round cup 7 on the one hand and a rectangular cup 8 on the other hand in diametrically opposite hanging positions.
  • These swivel cups can be swiveled in the suspended position about the respective axes of the suspension pins 6.
  • a rotor-specific maximum speed initially applies and for this purpose the rotor 1 has a machine-readable one, for example the rotor type and the permissible maximum speed encoding.
  • This is formed by an arrangement of magnetic bodies 9 which are arranged in a uniform distribution along a partial circle 10 which is coaxial with the axis 2.
  • This pitch circle is located on the underside of a hub section 11 of the rotor 1.
  • the magnet body is located directly opposite the magnet body, namely held by the facing housing part 4, and there is a magnetically or inductively effective sensor 12 which is used to receive a sensor element which is dependent on the arrangement of the magnet bodies 9. the pulse sequence containing the above information is suitable.
  • the coding can be designed in a variety of ways via the magnetic bodies 9, for example by a sequence of magnetic bodies 9 of alternating polarity, but also by a sequence of magnetic bodies and empty spaces in the context of the magnetic body arrangement of the partial circle 10. partial circles coaxial to one another can be provided.
  • a higher permissible maximum speed applies to the round cup 7 than for the rectangular cup 8.
  • the coding made via the hub section 11 initially relates to a fixed permissible maximum speed. If this maximum permissible speed is, for example, identical to that of the round cup 7, the coding of the hub section 11 must be changed when rectangular cups 8 are inserted such that the maximum permissible speed is now set to that of the rectangular cups 8.
  • This setting can be made manually in conventional rotors and reference is made below to the explanation of this process to the drawing figures 3 and 4, in which functional elements that correspond to those of FIGS. 1 and 2 agree, are numbered accordingly.
  • the individual magnetic bodies 9 are received in cylindrical holders, which in turn are inserted in through bores 13 of the hub section 11.
  • a link 14 is now proposed according to the invention, which is screwed together with the rotor 1 to the drive shaft 3.
  • the backdrop 14 is formed globally as a plate-like component and carries on the underside at defined positions of the pitch circle 10 brackets 15, which are equipped with the magnetic bodies 9 mentioned. These brackets 15 can be screwed to the link 14 in suitable positions along the pitch circle, as indicated at point 16. A removal of the backdrop 14 thus has the consequence that with this also removes the brackets 15 and gastric bodies 9 located in the bores 13, so that the coding state shown in FIGS. 3 and 4 is produced.
  • the brackets 15 are thus fastened to the link 14 in a manner which is specific for the representation of a maximum speed and which, as a result, is represented by the sequence of the magnetic bodies 9 along the pitch circle 10.
  • the rotor drive in particular its control, is designed in such a way that when the slide 14 is removed, the centrifuge can only be operated at the lowest possible permissible speed, so that at least one safety risk is eliminated.
  • the backdrop 14 is equipped in the peripheral area with locking tabs 17 which extend parallel to the axis 2 and protrude into the suspension places 5 in a characteristic manner.
  • the backdrop 14 in connection with its locking tabs 17 is dimensioned such that when the backdrop 14 is installed, rectangular cups 8 cannot be inserted into the hanger places 5, since this is spatially prevented by the locking tabs 17.
  • a further function of the link 14 in addition to that of an information carrier is thus that certain types of swivel cups are prevented from being inserted in a positive manner, such swivel cups having a maximum permissible rotational speed that is lower than that achieved by mounting the link 14 is specified. This exclusion function of the link 14 thus makes a significant contribution to avoiding operating errors which would otherwise exist in an operation of the centrifuge at such speeds that would not fit the swivel cups used.

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  • Centrifugal Separators (AREA)
EP95100796A 1994-06-03 1995-01-21 Rotor d'une centrifugeuse pour laboratoire Withdrawn EP0685266A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4419485 1994-06-03
DE19944419485 DE4419485C2 (de) 1994-06-03 1994-06-03 Rotor für eine Laborzentrifuge

Publications (1)

Publication Number Publication Date
EP0685266A1 true EP0685266A1 (fr) 1995-12-06

Family

ID=6519744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100796A Withdrawn EP0685266A1 (fr) 1994-06-03 1995-01-21 Rotor d'une centrifugeuse pour laboratoire

Country Status (2)

Country Link
EP (1) EP0685266A1 (fr)
DE (1) DE4419485C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007042200A1 (fr) * 2005-10-07 2007-04-19 Fritsch Gmbh Broyeur a boulets pourvu de moyens d'identification des cuves de broyage
WO2007042202A1 (fr) * 2005-10-07 2007-04-19 Fritsch Gmbh Broyeur a boulets avec detection de l'etat de fonctionnement
FR2951965A1 (fr) * 2009-11-04 2011-05-06 Bms Internat Centrifugeuse integrant des moyens tachymetriques montes dans une partie superieure de l'enceinte, en particulier montes sur le couvercle
FR3005275A1 (fr) * 2013-05-02 2014-11-07 Afi Centrifuge Centrifugeuse de laboratoire munie de moyens d'identification d'un accessoire rapporte sur son arbre moteur
EP1767790B1 (fr) 2005-09-22 2018-02-21 Pfeiffer Vacuum Gmbh Système de pompe à vide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982162A (en) * 1969-08-13 1976-09-21 David William Olliffe Centrifuges
DE3305461A1 (de) * 1982-02-17 1983-08-25 Kabushiki Kaisha Kubota Seisakusho, Tokyo Automatischer diskriminator zum unterscheiden zwischen verschiedenen rotortypen
DE3815449A1 (de) * 1988-05-06 1989-11-16 Sigma Laborzentrifugen Gmbh Zentrifuge, insbesondere laborzentrifuge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128649U (ja) * 1982-02-19 1983-08-31 株式会社久保田製作所 遠心分離機
DE3818594A1 (de) * 1988-06-01 1989-12-07 Hermle Kg Berthold Zentrifuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982162A (en) * 1969-08-13 1976-09-21 David William Olliffe Centrifuges
DE3305461A1 (de) * 1982-02-17 1983-08-25 Kabushiki Kaisha Kubota Seisakusho, Tokyo Automatischer diskriminator zum unterscheiden zwischen verschiedenen rotortypen
DE3815449A1 (de) * 1988-05-06 1989-11-16 Sigma Laborzentrifugen Gmbh Zentrifuge, insbesondere laborzentrifuge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1767790B1 (fr) 2005-09-22 2018-02-21 Pfeiffer Vacuum Gmbh Système de pompe à vide
EP3318764B1 (fr) 2005-09-22 2020-11-11 Pfeiffer Vacuum Gmbh Pompe à vide avec protection contre un excès de vitesse
WO2007042200A1 (fr) * 2005-10-07 2007-04-19 Fritsch Gmbh Broyeur a boulets pourvu de moyens d'identification des cuves de broyage
WO2007042202A1 (fr) * 2005-10-07 2007-04-19 Fritsch Gmbh Broyeur a boulets avec detection de l'etat de fonctionnement
FR2951965A1 (fr) * 2009-11-04 2011-05-06 Bms Internat Centrifugeuse integrant des moyens tachymetriques montes dans une partie superieure de l'enceinte, en particulier montes sur le couvercle
WO2011054901A1 (fr) * 2009-11-04 2011-05-12 Awel International Centrifugeuse intégrant des moyens tachymétriques montés dans une partie supérieure de l'enceinte, en particulier montés sur le couvercle
FR3005275A1 (fr) * 2013-05-02 2014-11-07 Afi Centrifuge Centrifugeuse de laboratoire munie de moyens d'identification d'un accessoire rapporte sur son arbre moteur

Also Published As

Publication number Publication date
DE4419485C2 (de) 1997-02-13
DE4419485A1 (de) 1995-12-07

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