EP2827997B1 - Rotor pour centrifugeuse de laboratoire - Google Patents

Rotor pour centrifugeuse de laboratoire Download PDF

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Publication number
EP2827997B1
EP2827997B1 EP13745345.2A EP13745345A EP2827997B1 EP 2827997 B1 EP2827997 B1 EP 2827997B1 EP 13745345 A EP13745345 A EP 13745345A EP 2827997 B1 EP2827997 B1 EP 2827997B1
Authority
EP
European Patent Office
Prior art keywords
rotor
lid
nut
hub
opening
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.)
Active
Application number
EP13745345.2A
Other languages
German (de)
English (en)
Other versions
EP2827997A1 (fr
Inventor
Eckhard Tödteberg
Matthias Bittner
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
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Filing date
Publication date
Application filed by Sigma Laborzentrifugen GmbH filed Critical Sigma Laborzentrifugen GmbH
Publication of EP2827997A1 publication Critical patent/EP2827997A1/fr
Application granted granted Critical
Publication of EP2827997B1 publication Critical patent/EP2827997B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/02—Other accessories for centrifuges for cooling, heating, or heat insulating
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • 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
    • B04B2007/025—Lids for laboratory centrifuge rotors
    • 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
    • B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes
    • B04B2009/085—Locking means between drive shaft and rotor

Definitions

  • the invention relates to the rotor of a laboratory centrifuge according to the preamble of claim 1.
  • Laboratory centrifuges consist of a housing which can be closed by a lid, in which a rotor, which is connected to an electric drive, is suspended in a swingable manner.
  • the rotor is provided in the peripheral region with a series of receptacles in which vessels can be used, which are intended to receive a mixture to be treated by centrifugation.
  • the rotor is further equipped with a rotor hub, via which it can be plugged onto a drive shaft within the housing.
  • the centrifugation is frequently carried out under certain thermal conditions, so that a correspondingly conditioned state of the rotor or the interior of the housing is required.
  • the rotor hub of the rotor has undergone a special design, in such a way that it simultaneously forms a conveying member forms, which is intended to represent a relative to the rotor axially and centrally directed media flow, z. B. a cooling medium, in particular cooling air.
  • the rotor hub is provided on the outside with one, preferably a plurality of helical indentations, which are designed to exert a conveying effect in the manner of an axial fan, a screw conveyor or the like.
  • Several helical indentations can be arranged in the manner of a two- or multi-start thread.
  • An axially penetrating fluid stream is in direct thermal exchange with the rotor and thus also the mixtures to be treated.
  • said recesses extend between the two front ends of the rotor hub, which consists of an annular flange and an integrally formed on this neck part.
  • a media guide thus takes place over the edge regions of the rotor hub, whose core region is set up for attachment to a drive shaft. The intended use of the rotor hub is thus not hindered.
  • the design of the conveying member in the sense of claim 3 is advantageous in many cases, since in this way, for example, a cooling air flow from the top of the rotor through this through to the underside is represented.
  • the further guidance of the cooling air or another medium in the housing in a circulation or in conjunction with the ambient atmosphere can be done in any way.
  • claims 4 to 6 are directed to an embodiment of the rotor, which consists of a rotor body, a lid, a cover screw, a specially trained nut and the rotor hub. It can be seen that the cover can be removed by loosening the cover screw, without affecting the cohesion of the rotor by the way.
  • the nut is equipped with two internal threads, one of which is designed for screwing with the cover screw and the other for screwing to the rotor hub or its attachment part.
  • the end face of the attachment part is held within the nut at a distance from the end face of the associated with the cover screw part. In this way it is ensured that a media flow is not hindered by the radially outer side recesses of the rotor hub by screwing it with the mother.
  • a continuous axially directed central flow path through the rotor is arranged according to the features of claim 8, which incorporates the radially outer side recesses of the rotor hub and the cover screw.
  • the cover screw consists of a plate-like disk intended for actuation and a hollow cylinder-like part arranged thereon, which is inserted into a central opening of the disk, thereby representing an axial passage through the cover screw.
  • an existing between the lid and the rotor body annular space is formed sealed.
  • This embodiment is possible because the conveying member according to the invention is located in the vicinity of the axis of the rotor.
  • the features of claim 10 are directed to axially backlash-free assembly of the rotor hub.
  • a means is provided with the rotor according to the invention, which is characterized by a simple structure and with which a contribution to an improved and especially uniform guidance of a medium, in particular for the uniform thermal conditioning of the rotor of a laboratory centrifuge including the substance mixture to be treated.
  • FIG. 1 With 1 is in the Fig. 1 and 2 a with respect to its axis 2 a rotationally symmetrical structure exhibiting rotor of a by the way not graphically marked laboratory centrifuge referred to.
  • This consists of a rotor body 3, in its peripheral region are receptacles 4, which are intended in a conventional manner for the insertion of vessels in which there is a mixture to be treated by centrifugation mixture.
  • cover screw 6 which covers the rotor body 3 and is screwed over a coaxially to the axis 2 extending cover screw 6 with a nut 7, which is located below the lid 5.
  • cover screw 6 On the cover screw 6 is a hollow cylindrical, extending through a recess 8 of the lid 5 extending therethrough, an external thread-bearing part 9 is attached, which is in engagement with an internal thread 19 of the nut 7.
  • sealing ring 10 preferably in the manner of a four-lip seal between the cover 5 and the nut 7, in fact received in radially opposite annular recesses.
  • the cover 5 has a bowl-like curved shape which is open in the direction of the rotor body 3, the free edge 11 of which rests against a further sealing ring 12 which is accommodated in an annular recess of the rotor body 3. Also, this sealing ring 12 is preferably applied in the manner of a four-lip seal. It can be seen that in this way between the top of the rotor body 3 and the underside of the lid 5 facing a sealed, extending around the nut 7 around annular space 13 is arranged.
  • a rotor hub is referred to, which consists of an annular flange 15 and arranged on this hollow cylindrical neck portion 16, which latter extends in the installed state through an opening 17 of the rotor body 3 and into the nut 7 inside. His face 18 is located within the nut 7 at a distance in front of the facing end face 31 of the part 9 of the cover screw. 6
  • the attachment part 16 carries an external thread which is in engagement with a further internal thread 20 of the nut 7.
  • the annular flange 15 is braced with the interposition of a plate spring 21 with the rotor body 3, wherein on the internal thread 20, a composite with the nut 7 is made.
  • the rotor hub 14, in particular its attachment part 16 is provided radially on the outside with two, diametrically opposite helical indentations 25, 26, which have an equal pitch and extend approximately over an angle of 90 °.
  • the indentations 25, 26 have an approximately rectangular cross-sectional profile and are in the outer contour of the annular flange 15 as local recesses 26, 27 continued. In this way, there are two continuous helical, applied in the manner of a double-threaded thread channels starting in the free end face 28 of the annular flange 15 and ending in the free end face 18 of the attachment part 16th
  • the system of the indentations 24 to 27 performs the function of a conveying member in the manner of an axial fan or a screw conveyor, which in accordance with the operating speed of the rotor 1 and in in the embodiment shown in the counterclockwise direction slope of the recesses 24 to 27, a pressure gradient starting from the upper side inlet openings 29 of the recesses 24, 25 in the space between the end face 18 of the rotor hub 14 and the opposite facing end face 31 of the part 9 of the cover screw 6 to to the lower-side outlet openings 30 of the recesses 26, 27.
  • This pressure gradient generates a coaxial to the axis 2 air flow through the rotor 1, namely the input side via the opening 32 of the part 9 of the cover screw 6 and the rotor hub 14, ausgansproof via the outlet openings 30, thus from the top 23 to the bottom 22 of the rotor 1, which may be subjected to further treatment within the centrifuge housing.
  • the further treatment of the media flow generated in this way may be in conjunction with cooling devices in a circulation loop, in which the rotor hub 14 described above is incorporated. It can also be that hot air is dissipated into the environment and is at least partially replaced by cooler fresh air. It can finally be used in conjunction with a heating device for controlling the temperature of the rotor. In all these cases results in a thermal influence of the rotor 1, starting from the near-axis areas and, consequently, a homogenization of the conditions for the treatment of the mixture. LIST OF REFERENCE NUMBERS 1.

Claims (10)

  1. Rotor (1) pour une centrifugeuse de laboratoire avec un corps de rotor (3) muni dans la périphérie de logements (4) pour des récipients contenant un mélange de substances à traiter par centrifugation, et un moyeu de rotor (14) inséré dans une ouverture centrale (17) du corps de rotor (3) caractérisé en ce que, à l'extérieur du moyeu de rotor (14), s'étend au moins une rainure traversante (24, 27) en spirale, constituant, entre le côté supérieur (23) et le côté inférieur (22) du rotor (1), un organe de refoulement actif dans la direction de son axe (2) à la manière d'une machine à écoulement axial.
  2. Rotor (1) selon la revendication 1, caractérisé en ce que le moyeu de rotor (14) est constitué d'une bride annulaire (15) conçue pour s'appuyer contre le bord inférieur de l'ouverture (17) et d'un prolongement (16) annulaire cylindrique insérée dans l'ouverture (17) et en ce que l'au moins une rainure (25, 27) s'étend entre le côté frontal supérieur (18) du prolongement (16) et le côté frontal inférieur (28) de la bride annulaire (15).
  3. Rotor (1) selon la revendication 1 ou 2, caractérisé en ce que l'inclinaison de l'au moins une rainure (25, 27) est conçue selon le sens de rotation du rotor (1) de façon que l'organe de refoulement présente une direction axiale de refoulement d'un côté supérieur (23) du rotor (1) en direction de son côté inférieur (22).
  4. Rotor (1) selon l'une des revendications 1 à 3, caractérisé par un couvercle (5) recouvrant le côté supérieur du corps de rotor (3), qui limite, entre lui et le corps de rotor (3), un espace annulaire (13) coaxial par rapport à l'axe (2) du rotor (1).
  5. Rotor (1) selon l'une des revendications 2 à 4, caractérisé par un écrou (7), qui est vissé, du côté supérieur du corps de rotor (3), par l'intermédiaire d'un filetage interne (20), sur la pièce rapportée (16).
  6. Rotor (1) selon la revendication 5, caractérisé par une vis de couvercle (6), qui est vissée par l'intermédiaire d'une pièce cylindrique creuse (9) moulée sur elle, sur un filetage interne (19) de l'écrou (7).
  7. Rotor (1) selon la revendication 6, caractérisé en ce que, à l'intérieur de l'écrou (7), le côté frontal (18) du prolongement (16) est disposé à une certaine distance du côté frontal (31) de la pièce (9).
  8. Rotor (1) selon la revendication 6 ou 7, caractérisé en ce que la vis de couvercle (6) et le moyeu de rotor (14) forment un trajet d'écoulement axial central traversant.
  9. Rotor (1) selon l'une des revendications 4 à 8, caractérisé en ce que l'espace annulaire (13) est étanchéifié à l'aide de bagues d'étanchéité (10, 12) sur le bord interne ainsi que sur le bord externe (11) du couvercle (5).
  10. Rotor (1) selon l'une des revendications 2 à 9, caractérisé en ce que, entre la bride annulaire (15) et le bord de l'ouverture (17), est disposé un élément élastique.
EP13745345.2A 2012-08-24 2013-07-24 Rotor pour centrifugeuse de laboratoire Active EP2827997B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012008062U DE202012008062U1 (de) 2012-08-24 2012-08-24 Rotor für eine Laborzentrifuge
PCT/EP2013/002188 WO2014029458A1 (fr) 2012-08-24 2013-07-24 Rotor pour centrifugeuse de laboratoire

Publications (2)

Publication Number Publication Date
EP2827997A1 EP2827997A1 (fr) 2015-01-28
EP2827997B1 true EP2827997B1 (fr) 2016-03-23

Family

ID=47088429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13745345.2A Active EP2827997B1 (fr) 2012-08-24 2013-07-24 Rotor pour centrifugeuse de laboratoire

Country Status (5)

Country Link
US (1) US9079195B2 (fr)
EP (1) EP2827997B1 (fr)
CN (1) CN104039459B (fr)
DE (1) DE202012008062U1 (fr)
WO (1) WO2014029458A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012008062U1 (de) * 2012-08-24 2012-10-01 Sigma Laborzentrifugen Gmbh Rotor für eine Laborzentrifuge
FR3005273A1 (fr) * 2013-05-02 2014-11-07 Afi Centrifuge Centrifugeuse de laboratoire comprenant des moyens pour le verrouillage en translation d'un rotor sur un arbre moteur d'entrainement
EP3012027B1 (fr) * 2014-10-21 2016-09-21 Sigma Laborzentrifugen GmbH Ensemble d'embrayage actionné par la force centrifuge pour une centrifugeuse de laboratoire
DE102015216447A1 (de) * 2015-08-27 2017-03-02 Andreas Hettich Gmbh & Co. Kg Zentrifuge
DE102017130787A1 (de) * 2017-12-20 2019-06-27 Eppendorf Ag Zentrifugenrotor
DE102017130786A1 (de) * 2017-12-20 2019-06-27 Eppendorf Ag Zentrifugenrotor
CN112295748B (zh) * 2020-10-12 2021-11-09 王海洋 一种单细胞测序用细胞样品保存装置

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
GB751078A (en) * 1953-09-04 1956-06-27 Sandoz Ltd Improvements in or relating to centrifuges
US2878992A (en) * 1956-12-28 1959-03-24 Beckman Instruments Inc Centrifuge apparatus and rotor therefor
US2917229A (en) * 1958-04-17 1959-12-15 Lourdes Instr Company Refrigerated centrifuge
US3148146A (en) * 1962-05-25 1964-09-08 Clay Adams Inc Centrifuge
US3860166A (en) * 1972-04-18 1975-01-14 Anderson Lab Inc Apparatus for separating moisture from solids
JPS5453772U (fr) * 1977-09-24 1979-04-13
JPS57937Y2 (fr) * 1978-03-13 1982-01-07
DE4014439C1 (en) * 1990-05-05 1991-07-04 Heraeus Sepatech Gmbh, 3360 Osterode, De Laboratory centrifuge, with no contamination risk in cooling system - has air sucked into the housing and distributed by impeller to the side-walls of aerosol tight vessel, which surrounds the rotor
DE4233753C2 (de) * 1992-10-07 1998-01-29 Hettich Andreas Fa Vakuum-Zentrifuge
US5490830A (en) * 1994-04-12 1996-02-13 Global Focus Marketing & Distribution Air-cooled biohazard centrifuge
DE19615702C1 (de) * 1996-04-22 1997-10-02 Heraeus Instr Gmbh Labor-Zentrifuge
SE0203413D0 (sv) * 2002-11-19 2002-11-19 Alphahelix Ab Device and rotor means therefor
DE10316897B4 (de) * 2003-04-12 2005-06-02 Kendro Laboratory Products Gmbh Zentrifuge mit luftgekühltem Motor
DE102004058247B4 (de) * 2004-12-02 2013-03-14 Thermo Electron Led Gmbh Luftgekühlte Zentrifuge
US7192394B1 (en) * 2005-12-27 2007-03-20 Thermo Fisher Scientific Inc. Air-cooled centrifuge
WO2007134624A1 (fr) * 2006-05-23 2007-11-29 Eppendorf Ag Couvercle servant à fermer le rotor d'une centrifugeuse
CN200981076Y (zh) * 2006-06-27 2007-11-28 赵喜周 螺旋水冷复合辊道
CN201742232U (zh) * 2010-06-17 2011-02-09 佳木斯电机股份有限公司 屏蔽电泵电机转子轴承套的冷却结构
DE202012008062U1 (de) * 2012-08-24 2012-10-01 Sigma Laborzentrifugen Gmbh Rotor für eine Laborzentrifuge

Also Published As

Publication number Publication date
US9079195B2 (en) 2015-07-14
DE202012008062U1 (de) 2012-10-01
CN104039459A (zh) 2014-09-10
CN104039459B (zh) 2017-04-19
US20140349829A1 (en) 2014-11-27
EP2827997A1 (fr) 2015-01-28
WO2014029458A1 (fr) 2014-02-27

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