EP0222085B1 - Zentrifugenbecher für Rotoren vom Schwenkbechertyp - Google Patents

Zentrifugenbecher für Rotoren vom Schwenkbechertyp Download PDF

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Publication number
EP0222085B1
EP0222085B1 EP86111809A EP86111809A EP0222085B1 EP 0222085 B1 EP0222085 B1 EP 0222085B1 EP 86111809 A EP86111809 A EP 86111809A EP 86111809 A EP86111809 A EP 86111809A EP 0222085 B1 EP0222085 B1 EP 0222085B1
Authority
EP
European Patent Office
Prior art keywords
centrifuge
cup
beaker
arcuate surface
groove
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
Application number
EP86111809A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0222085A2 (de
EP0222085A3 (en
Inventor
Dieter Müller
Christian Hirsch
Peter Dr. Pantucek
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.)
Thermo Electron LED GmbH
Original Assignee
Heraeus Sepatech 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 Heraeus Sepatech GmbH filed Critical Heraeus Sepatech GmbH
Priority to AT86111809T priority Critical patent/ATE45686T1/de
Publication of EP0222085A2 publication Critical patent/EP0222085A2/de
Publication of EP0222085A3 publication Critical patent/EP0222085A3/de
Application granted granted Critical
Publication of EP0222085B1 publication Critical patent/EP0222085B1/de
Expired 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 present invention relates to a centrifuge cup for rotors of the swivel cup type with two cutouts formed on opposite outer sides in the upper cup wall for receiving the rotor carrying bolts, each cutout having a bottom surface and being delimited by an arcuate surface on its side facing the cup opening.
  • centrifuge cups are known, for example, from DE-AS 2 637 900 and US Pat. No. 4,531,652. These beakers are used, for example, to hold sample beakers or test tubes, for which purpose, if necessary, separate insert inserts for such tubes can be inserted into the centrifuge beaker. Since such centrifuge beakers are subjected to high forces during centrifugation, they are preferably made from an injection molding, for example an aluminum injection molding.
  • centrifuge cups made of a plastic material are known from DE-PS 29 38 317, in which, at least in the area of the suspension, metal parts are used for reinforcement.
  • centrifuge beakers mentioned above are used in rotors, as are described, inter alia, in US Pat. No. 4,147,294 or DE-GM 77 22 184.
  • the present invention is based on the object of specifying a centrifuge cup in which, in comparison to conventional centrifuge cups, higher load change cycles can be achieved and higher gravity fields can be driven without the known material fatigue in the area of the recesses receiving the supporting bolts, in particular in the form of cracks. occur.
  • the bottom surface of the recess has a dome-like depression which is arranged in the region of the ridge of the arcuate surface adjacent to it and in that at least one groove is formed in the ridge region of the arcuate surface.
  • the centrifuge cups designed according to the invention have proven themselves to be excellent in test runs. Compared to conventional centrifuge cups, they are characterized by higher achievable load change cycles without recognizable material fatigue. The cup weight is not increased by the measure according to the invention and nevertheless a higher stability is achieved.
  • a centrifuge beaker which has at least one further groove on both sides of the at least one groove on the comb area of the arc-shaped surface has proven successful. These additional grooves result in an even distribution of the load in the recess receiving the support bolt.
  • the arcuate surface of the recess is designed such that it widens in a funnel shape towards the bottom surface.
  • the centrifuge cup lies only with the front edge of the curved surface in the idle state.
  • a slight bending of the cup can be determined, so that there is a linear support of the curved surface in the axial direction of the carrying bolt. It has proven advantageous here for the surface to widen at an angle between 15 '(minutes) to 10 to the pivot axis of the cup. With this linear support, the cup is optimally supported on the rotor support bolts.
  • the end of the at least one groove formed in the curved surface should form part of the spherical recess in the bottom surface of the recess.
  • the centrifuge cup shown in the figures is a double blood cup bag, the cup volume of which, as can be seen in particular from FIGS. 1 and 2, is divided into two cup areas 2 by a partition 1.
  • a partition 1 In the upper area of the cup wall 3, offset by approximately one third of the cup height from the upper cup edge 4 to the center of the cup, there are recesses 5 on opposite outer sides Recording of not shown rotor support bolts.
  • These recesses 5 have a flat bottom surface 6 and they are delimited at the top, ie towards the cup edge 4 or the cup opening 7, by an arcuate surface 8.
  • the recess 5 is open so that the double blood bag cup can be placed on the supporting bolts of the centrifuge rotor from above. So that the cup can pivot freely on the support bolts of the rotor, the two opposite outer sides, in which the recesses 5 are formed, are flattened parallel to one another.
  • a groove 12 is formed in the area of the comb 10 of the arcuate surface 8, namely in the direction of the pivot axis 19 of the rotor support bolts, which merges into the dome-like recess 11, indicated in FIG. 4 by the reference number 13.
  • At least one further groove 14 is milled into the arcuate surface 8 on both sides of the at least one groove 12, as shown in FIG. 4, as is illustrated with reference to FIGS. 5 and 6. While the groove 12 runs out into the dome-like recess 11, the two further grooves 14 in this exemplary embodiment end in the corner region of the recess 5, which is formed by the bottom surface 6 and the curved surface 8. Instead of these three grooves, an embodiment is also possible in which two grooves are formed in the arc-shaped surface 8, these two arc-shaped grooves then, according to the exemplary embodiment according to FIG. 4, to merge into the dome-like depression 11.
  • a design of the recess 5 in which the arcuate surface 8 extends in a funnel shape towards the bottom surface 6 has a particularly advantageous effect on the tension conditions of the centrifuge cup.
  • This undercut of the arcuate surface 8 has the effect that, at the beginning of the centrifuging process, the cup only rests with the outer edge 15 on the carrying bolt, indicated by the dash-dotted line 16 in FIG. 4. With increasing speed and thus increasing load, the cup is deformed until a linear support is formed along the top of the pin. Depending on the load (loading, speed, etc.) and the associated deformation of the cup, the angle of the undercut, designated by reference number 17, should be between 15 '(minutes) to 10.
  • the axis 18 of the dome-like depression (see FIG. 6) runs in the direction of the pivot axis 19 (see FIG. 3) of the centrifuge cup.
  • the groove end of at least one groove 12 forms part of the dome-shaped recess 11, i.e. in cross section, the groove 12 has a radius corresponding to the dome-like depression 11. This measure has the particular advantage that the groove 12 and the dome-like recess 11 can be milled in one operation.

Landscapes

  • Centrifugal Separators (AREA)
EP86111809A 1985-11-11 1986-08-26 Zentrifugenbecher für Rotoren vom Schwenkbechertyp Expired EP0222085B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111809T ATE45686T1 (de) 1985-11-11 1986-08-26 Zentrifugenbecher fuer rotoren vom schwenkbechertyp.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539916A DE3539916C1 (de) 1985-11-11 1985-11-11 Zentrifugenbecher fuer Rotoren vom Schwenkbechertyp
DE3539916 1985-11-11

Publications (3)

Publication Number Publication Date
EP0222085A2 EP0222085A2 (de) 1987-05-20
EP0222085A3 EP0222085A3 (en) 1988-06-08
EP0222085B1 true EP0222085B1 (de) 1989-08-23

Family

ID=6285658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111809A Expired EP0222085B1 (de) 1985-11-11 1986-08-26 Zentrifugenbecher für Rotoren vom Schwenkbechertyp

Country Status (5)

Country Link
US (1) US4804100A (enrdf_load_stackoverflow)
EP (1) EP0222085B1 (enrdf_load_stackoverflow)
JP (1) JPS62114670A (enrdf_load_stackoverflow)
AT (1) ATE45686T1 (enrdf_load_stackoverflow)
DE (2) DE3539916C1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718885A (en) * 1986-12-18 1988-01-12 E. I. Du Pont De Nemours And Company Swinging bucket centrifuge rotor having an uninterrupted knife edge pivot
US5624370A (en) * 1995-12-15 1997-04-29 Sorvall Products, L.P. Bucket for use in a swinging bucket centrifuge rotor
US5728038A (en) * 1997-04-25 1998-03-17 Beckman Instruments, Inc. Centrifuge rotor having structural stress relief
DE102009015111A1 (de) * 2009-03-31 2010-10-14 Andreas Hettich Gmbh & Co. Kg Zentrifugenbecher
CN106573255B (zh) * 2014-09-30 2019-05-31 工机控股株式会社 离心机以及离心机用摆动转子
EP3311925B1 (de) 2016-10-24 2019-05-01 Sigma Laborzentrifugen GmbH Zentrifugenbecher und zentrifuge

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128905A (en) * 1964-04-14 Wire handle for a molded container
US3341047A (en) * 1966-05-10 1967-09-12 Abbott Lab Container and bail construction
US4032066A (en) * 1976-03-15 1977-06-28 Beckman Instruments, Inc. Adapters for centrifuge rotors
US4148433A (en) * 1977-06-29 1979-04-10 Beckman Instruments, Inc. Friction reducing insert for swinging bucket rotors
DE7722184U1 (de) * 1977-07-15 1977-10-27 Heraeus-Christ Gmbh, 3360 Osterode Zentrifugenrotor
US4147294A (en) * 1978-02-22 1979-04-03 Beckman Instruments, Inc. Rotor carrier for microtitration plate
DE2938317C2 (de) * 1979-09-21 1983-04-28 Fa. Andreas Hettich, 7200 Tuttlingen Zentrifugenbecher aus Kunststoffmaterial
US4342419A (en) * 1980-10-31 1982-08-03 Beckman Instruments, Inc. Safety cover for centrifuge bucket
US4439177A (en) * 1981-10-26 1984-03-27 Beckman Instruments, Inc. Rotor bucket liner
US4531652A (en) * 1984-06-25 1985-07-30 Kabushiki Kaisha Kubota Seisakusho Bucket for use in centrifugal separators

Also Published As

Publication number Publication date
JPS62114670A (ja) 1987-05-26
DE3539916C1 (de) 1986-11-13
DE3665137D1 (en) 1989-09-28
EP0222085A2 (de) 1987-05-20
EP0222085A3 (en) 1988-06-08
ATE45686T1 (de) 1989-09-15
US4804100A (en) 1989-02-14
JPS6316174B2 (enrdf_load_stackoverflow) 1988-04-07

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