EP0564834A2 - Centrifugeuse - Google Patents

Centrifugeuse Download PDF

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Publication number
EP0564834A2
EP0564834A2 EP93103874A EP93103874A EP0564834A2 EP 0564834 A2 EP0564834 A2 EP 0564834A2 EP 93103874 A EP93103874 A EP 93103874A EP 93103874 A EP93103874 A EP 93103874A EP 0564834 A2 EP0564834 A2 EP 0564834A2
Authority
EP
European Patent Office
Prior art keywords
cassette
centrifuge according
sleeve
centrifuge
rotor
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
Application number
EP93103874A
Other languages
German (de)
English (en)
Other versions
EP0564834A3 (en
EP0564834B1 (fr
Inventor
Hans-Peter c/o Dr. Molter GmbH Aeschlimann
Volker c/o Dr. Molter GmbH Schmidhuber
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.)
Ortho Clinical Diagnostics GmbH
Original Assignee
Dr Molter 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 Dr Molter GmbH filed Critical Dr Molter GmbH
Publication of EP0564834A2 publication Critical patent/EP0564834A2/fr
Publication of EP0564834A3 publication Critical patent/EP0564834A3/de
Application granted granted Critical
Publication of EP0564834B1 publication Critical patent/EP0564834B1/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
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
    • B04B5/0421—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes pivotably mounted

Definitions

  • the invention relates to a centrifuge according to the preamble of claim 1.
  • Centrifuges with a basic structure according to the type described above are already well known.
  • the cassette receptacles used can be designed, for example, as a frame part, in which a cassette can be inserted and removed again after centrifuging.
  • centrifuges The disadvantage of these centrifuges is that the cassette receptacles with the cassettes inserted therein on the one hand do not perform a constant swiveling movement and, on the other hand, are not held in a predetermined removal position when the centrifuge is at standstill, so that there is a risk that the centrifuged material can leak out in a cassette that is not hermetically sealed .
  • the invention has for its object to design a centrifuge of the type specified so that, on the one hand, during the centrifuging, an exact pivoting of the cassette receptacles, no overshoot over a swivel angle of 90 ° and, on the other hand, a blocking of the cassette receptacles in a predetermined position is ensured during the standstill of the centrifuge are to achieve better usability.
  • a radial flange should expediently be provided on the sleeve, on which at least one axial guide rod is to be fastened, which penetrates and is guided in the rotor and on whose lower end the locking disk is to be fastened. In this way, the height of the locking disk can be adjusted by adjusting the sleeve over the sleeve, its flange and its guide rod.
  • the locking stops of the cassette receptacles should expediently be designed as lateral projections of the cassette receptacles, which represents a structurally very simple solution.
  • this snap device again advantageously being designed as a ball screw should be working with a hole in the guide shaft.
  • the sleeve should on the one hand have an upper closed end, if possible in a rounded shape, and be of such a length that a cover closing the centrifuge presses the guide shaft into the lower switching position.
  • a weight that is laterally offset from the pivot axis of the cassette receptacle.
  • a limiting device should be provided to limit the pivoting movement of the cassette holders; this can advantageously and expediently consist of a locking projection which interacts with the respective rotor arm.
  • the weights already mentioned and arranged on the cassette receptacles should be arranged there, namely offset to the horizontal pivot axes of the cassette receptacles, that the cassette receptacles are automatically offset by 90 ° with respect to the rest position when the centrifuge is running.
  • the centrifuge 1 is arranged on a stand 2, partially shown, and within a housing 3 surrounding it, which is closed by means of a cover 4.
  • a drive motor 5 with a vertical drive shaft 6 is arranged in a central position inside the housing 3 or the stand 2.
  • a rotor 7 is fastened on the shaft 6 and carries two radially opposite rotor arms 8, 9. These arms 8, 9 are rotatable together with the rotor 7 and each consist of a base plate 10 and a cover plate 11.
  • a cassette holder 14 and 15 can be pivoted about a horizontal axis 12 and 13, respectively 1, the left-hand cassette holder 14 in FIG. 1 is shown in the rest or removal position, while the right-hand holder 15 in FIG. 1 is shown in the operating position, in which the cassette holder is pivoted by 90 ° with respect to the rest position.
  • a guide shaft 16 is provided on the rotor 7, on which a sleeve 17 is slidably fitted, which in turn has a central bore 18.
  • Fig. 1 shows the sleeve 17 in two different switching positions.
  • the sleeve 17 is equipped with a flange 19 on which downward guide rods 20 are attached. These pass through the rotor 7 and are guided in the rotor 7 in the axial direction.
  • a locking disk 21 is fastened, which is moved when the sleeve 17 is lowered and raised and can assume the two switching positions shown.
  • the guide shaft 16 is also equipped with a snap device in the form of a ball screw 22 which interacts with a transverse bore in the sleeve 17.
  • a snap device in the form of a ball screw 22 which interacts with a transverse bore in the sleeve 17.
  • the ball screw 22 In the upper switching position of the sleeve 17, the ball screw 22 is effective so that the sleeve 17 is held.
  • the locking action of the ball screw 22 is overcome and the sleeve 17 is moved into the lower switching position.
  • the outer diameter of the locking disk 21 is dimensioned such that the cassette receptacles 14, 15 can be pivoted about their horizontal axes 12, 13 without hindrance in the lower switching position. If a cassette holder 14, 15 has reached the pivoting position as shown in the left in FIG. 1 and the sleeve 17 is then moved into the upper switching position, the outer edge region of the locking disk 21 interferes with a locking projection 23, 24 of the cassette holders 14, 15 a pivoting back of the respective cassette holder approximately into the operating position shown in the right part of FIG. 1. Thus, when the centrifuge is stopped, all cassette receptacles 14, 15 can be held in a predetermined desired position or removal position and the removal of a cassette from the respective receptacle can be simplified.
  • the cassette receptacles 14, 15 have a bore for receiving the axis 12, 13 for their pivoting, which is attached to the end of the respective rotor arm 8, 9.
  • each cassette receptacle 14, 15 is equipped with a weight 25, 26 and 27, respectively, which is offset from the pivot axis 12, 13 (the latter see FIG. 3). This ensures that the receptacles 14, 15 each equipped with a cassette perform a defined pivoting movement about their horizontal axis 12, 13 and that the loaded receptacles are held in a precisely defined pivoting position during centrifugation.
  • the weight arranged eccentrically to the pivot axis 13 consists of two lateral projections 26 and 27.
  • FIG. 2 and 3 show in detail the cassette holder 15 of FIG. 1 in side view and in plan view.
  • the elongated cassette holder 15 has a front and a rear side wall 28 and 29, with a hole in the middle of the cassette holder in the upper region is provided for receiving the axis 13 for pivotally mounting the cassette holder 15.
  • the cassette holder 15 is also equipped with a lateral locking projection 24, which can be designed as a relatively narrow strip according to FIG. 3.
  • the cassette holder 15 is hollow, so that a slot-shaped opening 30 is formed, into which a correspondingly designed cassette can be inserted.
  • the invention is not limited to the arrangement of only two rotor arms 8, 9; instead, several rotor arms can be arranged instead, each of which is equipped with a cassette holder.
  • the sleeve 17 can be easily grasped by hand when the centrifuge is at a standstill and pulled into the upper switching position.
  • an upper cover 4 is placed on the housing 3 thereof, which presses with its lower side onto the upper end of the sleeve 17 and moves it into the lower switching position . The centrifuge 1 is thus automatically switched to an operational release position.
  • the sleeve 17 can also be designed such that it can be plugged onto two axially laterally offset shaft parts in order to achieve better lateral guidance.

Landscapes

  • Centrifugal Separators (AREA)
EP93103874A 1992-04-09 1993-03-10 Centrifugeuse Expired - Lifetime EP0564834B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4212006A DE4212006C2 (de) 1992-04-09 1992-04-09 Zentrifuge
DE4212006 1992-04-09

Publications (3)

Publication Number Publication Date
EP0564834A2 true EP0564834A2 (fr) 1993-10-13
EP0564834A3 EP0564834A3 (en) 1994-06-08
EP0564834B1 EP0564834B1 (fr) 1997-10-29

Family

ID=6456504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93103874A Expired - Lifetime EP0564834B1 (fr) 1992-04-09 1993-03-10 Centrifugeuse

Country Status (6)

Country Link
EP (1) EP0564834B1 (fr)
AT (1) ATE159669T1 (fr)
DE (2) DE4212006C2 (fr)
DK (1) DK0564834T3 (fr)
ES (1) ES2111088T3 (fr)
GR (1) GR3025860T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688606A1 (fr) * 1994-06-24 1995-12-27 Johnson & Johnson Clinical Diagnostics, Inc. Centrifugeuse améliorée et séparation de phases
US5851170A (en) * 1996-04-30 1998-12-22 Dade Behring Inc. Centrifuge with cam selectable rotational angles and method for unloading same
US6234948B1 (en) * 1997-10-27 2001-05-22 Michael Yavilevich Combined centrifugation assembly
US6620089B2 (en) * 2000-09-18 2003-09-16 Hitachi Koki Co., Ltd. Centrifugal separator having rotor with projection received in receiving member
US7422554B2 (en) * 2005-08-10 2008-09-09 The Drucker Company, Inc. Centrifuge with aerodynamic rotor and bucket design
CN110769940A (zh) * 2017-06-27 2020-02-07 泰肯贸易股份公司 离心处理单元

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420437A (en) * 1967-02-15 1969-01-07 Sorvall Inc Ivan Cell washing centrifuge
DE2626910A1 (de) * 1976-06-16 1977-12-29 Heraeus Christ Gmbh Zentrifuge, insbesondere zentrifuge mit schwenkbaren traegern
JPS5810653A (ja) * 1981-07-13 1983-01-21 Hitachi Koki Co Ltd 血球洗浄用遠心機
DE3512848A1 (de) * 1984-04-10 1985-10-17 Walter Sarstedt Kunststoff-Spritzgußwerk, 5223 Nümbrecht Zentrifuge
EP0160906A2 (fr) * 1984-05-11 1985-11-13 Kontron-Holding Ag Dispositif de transfert d'échantillons et analyse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420437A (en) * 1967-02-15 1969-01-07 Sorvall Inc Ivan Cell washing centrifuge
DE2626910A1 (de) * 1976-06-16 1977-12-29 Heraeus Christ Gmbh Zentrifuge, insbesondere zentrifuge mit schwenkbaren traegern
JPS5810653A (ja) * 1981-07-13 1983-01-21 Hitachi Koki Co Ltd 血球洗浄用遠心機
DE3512848A1 (de) * 1984-04-10 1985-10-17 Walter Sarstedt Kunststoff-Spritzgußwerk, 5223 Nümbrecht Zentrifuge
EP0160906A2 (fr) * 1984-05-11 1985-11-13 Kontron-Holding Ag Dispositif de transfert d'échantillons et analyse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 82 (P-189)(1227) 6. April 1983 & JP-A-58 010 653 (HITACHI KOKI K.K.) 21. Januar 1983 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688606A1 (fr) * 1994-06-24 1995-12-27 Johnson & Johnson Clinical Diagnostics, Inc. Centrifugeuse améliorée et séparation de phases
US5588946A (en) * 1994-06-24 1996-12-31 Johnson & Johnson Clinical Diagnostics, Inc. Centrifuge and phase separation
US5851170A (en) * 1996-04-30 1998-12-22 Dade Behring Inc. Centrifuge with cam selectable rotational angles and method for unloading same
US6234948B1 (en) * 1997-10-27 2001-05-22 Michael Yavilevich Combined centrifugation assembly
US6620089B2 (en) * 2000-09-18 2003-09-16 Hitachi Koki Co., Ltd. Centrifugal separator having rotor with projection received in receiving member
US7422554B2 (en) * 2005-08-10 2008-09-09 The Drucker Company, Inc. Centrifuge with aerodynamic rotor and bucket design
CN110769940A (zh) * 2017-06-27 2020-02-07 泰肯贸易股份公司 离心处理单元

Also Published As

Publication number Publication date
EP0564834A3 (en) 1994-06-08
DK0564834T3 (da) 1998-06-02
EP0564834B1 (fr) 1997-10-29
ES2111088T3 (es) 1998-03-01
GR3025860T3 (en) 1998-04-30
DE59307588D1 (de) 1997-12-04
DE4212006C2 (de) 1994-05-11
DE4212006A1 (de) 1993-10-14
ATE159669T1 (de) 1997-11-15

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