EP1329263B2 - Rotor mit Behälteraufnahmen für zu zentrifugierende Produkte und entsprechende Zentrifuge - Google Patents

Rotor mit Behälteraufnahmen für zu zentrifugierende Produkte und entsprechende Zentrifuge Download PDF

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Publication number
EP1329263B2
EP1329263B2 EP03290034.2A EP03290034A EP1329263B2 EP 1329263 B2 EP1329263 B2 EP 1329263B2 EP 03290034 A EP03290034 A EP 03290034A EP 1329263 B2 EP1329263 B2 EP 1329263B2
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Prior art keywords
rotation
axis
geometrical
rotor
image
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Expired - Lifetime
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EP03290034.2A
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English (en)
French (fr)
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EP1329263B1 (de
EP1329263A1 (de
Inventor
Jean Louis Fondin
Jérôme Beaucour
Serge Papin
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Jouan SA
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Jouan SA
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Priority to DE60301735.5T priority Critical patent/DE60301735T3/de
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    • 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

Definitions

  • the present invention relates to a centrifuge according to the preamble of claim 1. Such centrifuges are known from the state of the art.
  • the invention applies, for example, to the centrifugation of biological products.
  • rotors For the centrifugation of such products, generally frustoconical shaped rotors in which the housings have been formed in the form of recesses. These housings have elongated shapes and are, for each rotor, regularly distributed around its axis of rotation. These housings are intended to receive, for example, tubes containing the products to be centrifuged and closed by plugs.
  • the document JP-A-09262503 , US 6,045,494 and JP-A-0926 2503 describe rotors with a particular housing arrangement.
  • a centrifuge using such a rotor generally comprises a vessel, provided with refrigeration means and wherein the rotor is mounted on a rotating drive head.
  • An object of the invention is to solve this problem by limiting the noise caused by the rotational drive of rotors of the aforementioned type.
  • the subject of the invention is a centrifuge according to claim 1.
  • the centrifuge may comprise one or more of the features of the dependent claims.
  • FIGS. 1 and 2 schematically illustrate a centrifuge 1 which comprises a vessel 2, a rotor 3 disposed in the vessel 2, and means 4 for driving the rotor 3 in rotation about a substantially vertical axis of rotation A.
  • the tank 2 comprises a mobile access door 6 and means of refrigerating its interior atmosphere, which refrigeration means are not shown in the figures.
  • the rotor 3 is a generally frustoconical rotor of central axis A. It is equipped with a removable closure cover 7. The lid 7 has not been shown on the figure 2 .
  • the rotor 3 is for example made of metal and four eccentric housings with respect to the axis A are formed, namely a first pair of housing 8 1 and 8 2 and a second pair of housing 10 1 and 10 2 . It will be noted that the housings 10 1 and 10 2 are not represented on the figure 1 .
  • the housings 8 1 and 8 2 of the first pair are symmetrical to each other with respect to the axis A.
  • the housings 10 1 and 10 2 of the second pair are symmetrical to each other relative to each other. to axis A.
  • the housings 8 1 , 8 2 , 10 1 and 10 2 have an elongated similar shape along a respective longitudinal direction D.
  • each direction D is inclined with respect to the axis of rotation A and the section at a geometrical point situated above the rotor 3 and its cover 7.
  • the housings 8 1 , 8 2 , 10 1 and 10 2 open into the upper surface 12 of the rotor to allow, when the lid 7 is removed, to introduce into the housing containers containing the product or products to be centrifuged, for example tubes closed by plugs.
  • the rotor 3 would be invariant by a geometric rotation of axis A and angle equal to 90 ° ⁇ 2 ⁇ r ⁇ at ⁇ d .
  • the geometric image I dashed line of the housing 8 1 by such a rotation in a first direction S 1 would be merged with the housing 10 1 , housing directly following the housing 8 1 in this direction S 1 .
  • the housing 10 1 is not confused with this image I but is, in plan view, angularly offset from this image I by a non-zero angle ⁇ centered on the axis A and negative with respect to the direction S 1 .
  • the housing 10 1 is the image, by a geometric rotation of axis A and angle ⁇ , of the image I.
  • the longitudinal directions D of the housings 10 1 and of the image I form in plan view an angle ⁇ centered on the axis A and negative considering the direction S 1 .
  • the angle ⁇ is for example 4 ° and may be more generally between 2 ° and 10 °.
  • the housing 10 2 is angularly offset, in top view, of the not shown frame of the housing 8 2 with the aforementioned rotation.
  • the housings 8 1 , 8 2 , 10 1 and 10 2 are invariant by a geometric rotation of axis A and angle equal to 180 ° ⁇ rad) but not by a rotation of axis A and angle of 90 ° ⁇ 2 ⁇ r ⁇ at ⁇ d as in the state of the art.
  • the reason for this decrease or removal of noise may be as follows.
  • the zones Z ( figure 1 ) of the outer lateral surface 14 of the rotor 3 situated radially facing the housings 8 1 , 8 2 , 10 1 and 10 2 are deformed, under the effect of the centrifugal force, radially outwards more strongly than the zones of the outer lateral surface 14 located between the housing.
  • the reliefs thus created on the surface 14 are, like the housings 8 1 , 8 2 , 10 1 and 10 2 , invariant by a geometric rotation of axis A and angle equal to 180 ° ( ⁇ rad), and not by a geometric rotation of axis A and angle equal to 90 ° as in the state of the art.
  • the frequencies and intensities of the acoustic waves created during the rotational drive of the rotor are modified and the noise is reduced or eliminated.
  • the unbalance caused by the irregularity of disposition of the dwellings is relatively weak and acceptable because ⁇ is relatively small.
  • the angle ⁇ can be positive with respect to the direction S 1 .
  • housings 8 1 , 8 2 , 10 1 and 10 2 are conceivable.
  • the housing 10 1 is in top view translated laterally, with respect to the image I of the housing 8 1 , opposite to the direction S 1 of a non-zero distance d .
  • the longitudinal directions D of the housing 10 1 and the image I of the housing 8 1 are substantially parallel and spaced laterally from one another.
  • the distance d is for example 2mm and may be more generally between 1 and 5mm.
  • the housing 10 1 may be, in top view, laterally offset from the image I of the housing 8 1 in the direction S 1 .
  • the housing 10 1 may be, in top view, derived from a geometric translation of the image I, the direction of this translation not being necessarily orthogonal to the direction D of the image I.
  • the housing 10 1 can be deduced from the image I of the housing 8 1 by a geometric transformation in a radial plane containing the axis of rotation A and the longitudinal direction D of the image I.
  • figures 4 and 5 illustrate a third embodiment in which the longitudinal direction D of the housing 10 1 is angularly offset by a non-zero angle ⁇ with respect to the longitudinal direction D of the image I in the abovementioned plane P ( figure 4 ).
  • This plane P also contains the direction D of the housing 10 1 and corresponds to the right half-plane of the figure 5 .
  • the housing 10 1 is the image, by a geometric rotation of angle ⁇ in the plane P, of the image I.
  • angle ⁇ can be positive or negative.
  • This angle ⁇ has for example a value of 4 ° and may be more generally between 2 ° and 10 °.
  • the figure 6 illustrates another embodiment in which the housing 10 1 is obtained from the image I by geometric translation of a substantially constant distance ⁇ nonzero in the radial plane P.
  • the directions D of the housing 10 1 and the I image are substantially parallel and spaced from each other.
  • the aforementioned translation may be such that the housing 10 1 is closer to or further from the outer lateral surface 14 than the image I.
  • the angle ⁇ or the distance ⁇ are sufficiently small so that, on the one hand, the homogeneity of the centrifugation treatment experienced by products received in the housings 8 1 , 8 2 , 10 1 and 10 2 is satisfactory and on the other hand the unbalances are reduced.
  • the figure 7 illustrates yet another embodiment where the housing 10 1 is the image by a geometric transformation of the image I, this geometric transformation comprising a geometric rotation and a geometric translation in the plane of the figure 7 which is orthogonal to the axis of rotation A.
  • the rotation is a rotation of axis A and angle ⁇ .
  • Translation is a translation in the plane of the figure 7 a non-zero distance d in a direction that is not orthogonal to the direction D of the image I.
  • the figure 8 illustrates another embodiment where the housing 10 1 is obtained from the image I by a geometric transformation comprising a geometric rotation and a geometric translation in the radial plane P which comprises the axis of rotation A and the longitudinal direction D of the image I.
  • the rotation is a non-zero rotation of angle ⁇ and the translation a translation of a non-zero distance ⁇ in a direction orthogonal to the axis A.
  • the combination of a translation and a rotation makes it possible to increase the homogeneity of the centrifugation treatment undergone by products received in the housings 8 1 , 8 2 , 10 1 and 10 2 , to limit unbalance and to reduce aesthetic discomfort.
  • the geometric transformation between the image I and the housing 1 may comprise a translation and / or a rotation in a plane orthogonal to the axis of rotation A, and a translation and / or rotation in a radial plane containing axis A.
  • translations and rotations described above can be applied, for example separately each to a respective pair of housing when the number of housing is even and strictly greater than 4.
  • the housings are symmetrical in pairs with respect to the axis A.
  • the rotor 3 when the rotor 3 is provided with an even number n of housings, the rotor 3 will be invariant by a geometric rotation of axis A and of angle 180 ° which limits the unbalance. More generally, an invariance by a geometric rotation of axis A and angle strictly greater than 360 ⁇ ° not will limit the unbalance.
  • first housing whose geometric image, by a geometric rotation around the axis of rotation A and angle 360 / n ° in a direction of rotation, is distinct from a second housing of the rotor, this second housing directly following the first housing in the direction of rotation chosen.

Landscapes

  • Centrifugal Separators (AREA)

Claims (3)

  1. Zentrifuge mit einer Schale (2), einem Rotor (3), der in der Schale (2) angeordnet werden soll, und Mitteln (4) zum Rotationsantrieb des Rotors (3) um eine zentrale Rotationsachse (A) bei Geschwindigkeiten über 10.000 U/min, wobei in dem Rotor eine Anzahl n von Aufnahmen (81, 82, 101, 102) zur Aufnahme eines zu zentrifugierenden Produkts vorgesehen sind, wobei die Aufnahmen bezüglich der Rotationsachse exzentrisch sind, dadurch gekennzeichnet, dass das geometrische Bild (I) mindestens einer ersten Aufnahme (81) bezüglich einer geometrischen Rotation um die Rotationsachse (A) in einer ersten Rotationsrichtung (S1) und um einen Winkel von 360 ⁢ ° n
    Figure imgb0006
     von einer zweiten Aufnahme (101), die der ersten Aufnahme (81) in der ersten Rotationsrichtung (S1) direkt folgt, verschieden ist, dass die Aufnahmen (81, 82, 101, 102) eine im Wesentlichen analoge längliche Form entlang einer jeweiligen Längsrichtung (D) aufweisen und dass die zweite Aufnahme (101) im Wesentlichen das Bild des geometrischen Bildes (I) der ersten Aufnahme (81) nach einer geometrischen Transformation ist, dass die geometrische Transformation umfasst:
    - eine geometrische Rotation um einen von Null verschiedenen Winkel (α) in einer zur Rotationsachse (A) senkrechten Ebene, und/oder
    - eine geometrische Parallelverschiebung um einen von Null verschiedenen Abstand (d) in einer zur Rotationsachse (A) senkrechten Ebene, wobei die Richtung dieser Parallelverschiebung bezüglich der Längsrichtung (D) des geometrischen Bildes (I) der ersten Aufnahme geneigt ist,
    und dass die geometrische Transformation ferner umfasst:
    - eine geometrische Rotation um einen von Null verschiedenen Winkel (β) in einer Ebene, die die Rotationsachse (A) und die Längsrichtung des geometrischen Bildes (I) der ersten Aufnahme (81) enthält, und/oder
    - eine geometrische Parallelverschiebung um einen von Null verschiedenen Abstand (δ) in einer Ebene, die die Rotationsachse (A) und die Längsrichtung (D) des geometrischen Bildes (I) der ersten Aufnahme (81) enthält.
  2. Zentrifuge nach Anspruch 1, dadurch gekennzeichnet, dass die Aufnahmen (81, 82, 101, 102) bezüglich einer geometrischen Rotation um die Rotationsachse und um einen Winkel streng oberhalb 360 ⁢ ° n
    Figure imgb0007
     invariant sind.
  3. Zentrifuge nach Anspruch 2, dadurch gekennzeichnet, dass n eine gerade Zahl ist, die größer oder gleich 4 ist, und die Aufnahmen (81, 82, 101, 102) bezüglich der Rotationsachse (A) paarweise symmetrisch sind.
EP03290034.2A 2002-01-09 2003-01-07 Rotor mit Behälteraufnahmen für zu zentrifugierende Produkte und entsprechende Zentrifuge Expired - Lifetime EP1329263B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE60301735.5T DE60301735T3 (de) 2002-01-09 2003-01-07 Rotor mit Behälteraufnahmen für zu zentrifugierende Produkte und entsprechende Zentrifuge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0200219 2002-01-09
FR0200219A FR2834479B1 (fr) 2002-01-09 2002-01-09 Rotor a disposition amelioree de logements de reception de produits a centrifuger et centrifugeuse correspondante

Publications (3)

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EP1329263A1 EP1329263A1 (de) 2003-07-23
EP1329263B1 EP1329263B1 (de) 2005-10-05
EP1329263B2 true EP1329263B2 (de) 2014-07-30

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US (1) US6986731B2 (de)
EP (1) EP1329263B2 (de)
DE (1) DE60301735T3 (de)
FR (1) FR2834479B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008032073B4 (de) * 2008-07-08 2015-02-05 Thermo Electron Led Gmbh Ausschwingeinheit für eine Zentrifuge
CN104056731B (zh) * 2014-06-10 2017-03-29 苏州培英实验设备有限公司 离心振荡混匀一体机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1133436A (ja) † 1997-07-23 1999-02-09 Hitachi Koki Co Ltd 遠心分離機用アングルロータ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339836A (en) * 1965-02-02 1967-09-05 Internat Equipment Company Centrifuges
DE3341323C2 (de) * 1983-11-15 1987-02-19 Heraeus Separationstechnik GmbH, 3360 Osterode Laboratoriumszentrifuge
US4553955A (en) * 1984-06-01 1985-11-19 Beckman Instruments, Inc. Multi-angle adapter for fixed angle centrifuge rotor
US4820257A (en) * 1988-05-10 1989-04-11 Beckman Instruments, Inc. Rotor noise suppression
JPH05138072A (ja) * 1991-11-25 1993-06-01 Hitachi Koki Co Ltd 遠心分離機用ロータ
JP3456552B2 (ja) * 1994-10-05 2003-10-14 株式会社久保田製作所 遠心分離機のアングルロータ
US5605529A (en) * 1996-01-17 1997-02-25 Norfolk Scientific, Inc. High efficiency centrifuge rotor
JP3617172B2 (ja) * 1996-03-29 2005-02-02 日立工機株式会社 遠心分離機用ロータおよび遠心機
JPH1015436A (ja) * 1996-07-09 1998-01-20 Tomy Seiko:Kk 遠心分離方法および遠心分離機
JPH10328582A (ja) * 1997-05-29 1998-12-15 Tomy Seiko:Kk 遠心分離機のロータ
JP3967849B2 (ja) * 1998-07-01 2007-08-29 株式会社トミー精工 遠心分離機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1133436A (ja) † 1997-07-23 1999-02-09 Hitachi Koki Co Ltd 遠心分離機用アングルロータ

Also Published As

Publication number Publication date
DE60301735T3 (de) 2015-02-19
EP1329263B1 (de) 2005-10-05
FR2834479A1 (fr) 2003-07-11
EP1329263A1 (de) 2003-07-23
US20030158026A1 (en) 2003-08-21
DE60301735D1 (de) 2005-11-10
DE60301735T2 (de) 2006-03-16
US6986731B2 (en) 2006-01-17
FR2834479B1 (fr) 2004-11-19

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