EP1329263B1 - 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
EP1329263B1
EP1329263B1 EP03290034A EP03290034A EP1329263B1 EP 1329263 B1 EP1329263 B1 EP 1329263B1 EP 03290034 A EP03290034 A EP 03290034A EP 03290034 A EP03290034 A EP 03290034A EP 1329263 B1 EP1329263 B1 EP 1329263B1
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EP
European Patent Office
Prior art keywords
rotation
rotor
axis
geometrical
image
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
EP03290034A
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English (en)
French (fr)
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EP1329263B2 (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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Publication date
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Application filed by Jouan SA filed Critical Jouan SA
Priority to DE60301735.5T priority Critical patent/DE60301735T3/de
Publication of EP1329263A1 publication Critical patent/EP1329263A1/de
Application granted granted Critical
Publication of EP1329263B1 publication Critical patent/EP1329263B1/de
Publication of EP1329263B2 publication Critical patent/EP1329263B2/de
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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

Definitions

  • the present invention relates to a rotor of the type intended to be rotated about a central axis of rotation and in which a number n of receivers housing a product to be centrifuged are provided, the housing being eccentric with respect to the rotation axis.
  • the invention applies, for example, to centrifugation of products organic.
  • JP-A-09262503 discloses a rotor according to the preamble of claim 1.
  • a centrifuge using such a rotor generally comprises a tank, provided with refrigeration means and in which the rotor is mounted on a rotating head of training.
  • One object of the invention is to solve this problem by limiting the noise nuisance caused by the rotational drive of rotors of the type supra.
  • the subject of the invention is a rotor of the aforementioned type, having all the features of claim 1.
  • the invention further relates to a centrifuge comprising a tank, a rotor intended to be arranged in the tank, and means for rotating the rotor, characterized in that the rotor is a rotor as defined above.
  • FIGS 1 and 2 schematically illustrate a centrifuge 1 which comprises a tank 2, a rotor 3 disposed in the tank 2, and means 4 driving rotation of the rotor 3 about an axis of rotation A substantially vertical.
  • the tank 2 comprises a mobile access door 6 and means for refrigerating its interior atmosphere, which means refrigeration 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 was not shown in 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 shown in FIG.
  • 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 distribution of the housings 8 1 , 8 2 , 10 1 and 10 2 around the axis of rotation A is irregular.
  • the rotor 3 would be invariant by a geometric rotation of axis A and angle equal to 90 ° ( ⁇ / 2 rad).
  • 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 merged with this image I, but is, when viewed from above, angularly offset from this image I by a non-zero angle ⁇ centered on the axis A and negative with respect to 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 can be understood 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 rad) as in the state of the art.
  • the reason for this decrease or removal of noise may be as follows.
  • the zones Z (FIG. 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 deform under the effect of the centrifugal force radially outwards more strongly than the zones of the outer lateral surface 14 situated between the housings.
  • 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 even eliminated.
  • the unbalance caused by the irregularity of disposition housing is relatively low and acceptable due to the fact that ⁇ is relatively weak.
  • 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 a top view translated laterally with respect to the image I of the housing 8 1 , opposite to the direction S 1 of a distance d no nothing.
  • 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.
  • FIGS. 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 (FIG. Figure 4).
  • This plane P also contains the direction D of the housing 10 1 and corresponds to the right half-plane of FIG. 5.
  • the housing 10 1 is the image, by a geometric rotation of angle ⁇ in the plane P, of the picture I.
  • angle ⁇ can be positive or negative.
  • This angle ⁇ example a value of 4 ° and may be more generally between 2 ° and 10 °.
  • FIG. 6 illustrates another embodiment in which the housing 10 1 is obtained from the image I by geometric translation of a substantially constant distance ⁇ that is not zero in the radial plane P.
  • the directions D of the housing 10 1 and of the image I 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.
  • FIG. 7 illustrates yet another embodiment where the housing 10 1 is the image by a geometrical transformation of the image I, this geometrical transformation comprising a geometrical rotation and a geometric translation in the plane of FIG. is orthogonal to the axis of rotation A.
  • the rotation is a rotation of axis A and angle ⁇ .
  • the translation is a translation in the plane of FIG. 7 of a non-zero distance d in a direction that is not orthogonal to the direction D of the image I.
  • FIG. 8 illustrates another embodiment where the housing 10 1 is obtained from the image I by a geometrical transformation comprising a geometrical rotation and a geometrical 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 angle rotation ⁇ and the translation a translation of a non-zero distance ⁇ in one 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.
  • 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 an angle strictly greater than 360 ° / n will limit the unbalance.
  • first housing whose geometric image, by a rotation geometrically 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 following directly the first housing in the direction of rotation chosen.

Claims (6)

  1. Rotor (3) der Art, die zu einer Rotation um eine zentrale Rotationsachse (A) angetrieben werden soll und in dem 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 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, und daß die geometrische Transformation 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 umfaßt, wobei die Richtung dieser Parallelverschiebung bezüglich der Längsrichtung (D) des geometrischen Bildes (I) der ersten Aufnahme geneigt ist.
  2. Rotor 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 invariant sind.
  3. Rotor nach Anspruch 2, dadurch gekennzeichnet, daß n eine gerade Zahl ist, die größer als oder gleich 4 ist, und die Aufnahmen (81, 82, 101, 102) bezüglich der Rotationsachse (A) paarweise symmetrisch sind.
  4. Rotor nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die geometrische Transformation 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, umfaßt.
  5. Rotor nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die geometrische Transformation 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, umfaßt.
  6. Zentrifuge mit einer Schale (2), einem Rotor (3), der in der Schale (2) angeordnet werden soll, und Mitteln (4) zum Rotationsantrieb des Rotors (3), dadurch gekennzeichnet, daß der Rotor ein Rotor nach einem der vorangehenden Ansprüche ist.
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)

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

Family

ID=8871212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03290034.2A Expired - Lifetime EP1329263B2 (de) 2002-01-09 2003-01-07 Rotor mit Behälteraufnahmen für zu zentrifugierende Produkte und entsprechende Zentrifuge

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Country Link
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

Family Cites Families (12)

* 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
DE3341323A1 (de) * 1983-11-15 1985-05-30 Heraeus-Christ 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
JP4061672B2 (ja) † 1997-07-23 2008-03-19 日立工機株式会社 遠心分離機用アングルロータ
JP3967849B2 (ja) * 1998-07-01 2007-08-29 株式会社トミー精工 遠心分離機

Also Published As

Publication number Publication date
EP1329263B2 (de) 2014-07-30
US20030158026A1 (en) 2003-08-21
US6986731B2 (en) 2006-01-17
DE60301735T3 (de) 2015-02-19
DE60301735D1 (de) 2005-11-10
FR2834479A1 (fr) 2003-07-11
EP1329263A1 (de) 2003-07-23
DE60301735T2 (de) 2006-03-16
FR2834479B1 (fr) 2004-11-19

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