DE1063532B - Centrifuge, especially ultracentrifuge, with exchangeable rotor - Google Patents

Centrifuge, especially ultracentrifuge, with exchangeable rotor

Info

Publication number
DE1063532B
DE1063532B DEP20229A DEP0020229A DE1063532B DE 1063532 B DE1063532 B DE 1063532B DE P20229 A DEP20229 A DE P20229A DE P0020229 A DEP0020229 A DE P0020229A DE 1063532 B DE1063532 B DE 1063532B
Authority
DE
Germany
Prior art keywords
centrifuge
rotor
ultracentrifuge
speed
rotors
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.)
Pending
Application number
DEP20229A
Other languages
German (de)
Inventor
Dipl-Math Dietrich Stams
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.)
Phywe AG
Original Assignee
Phywe AG
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 Phywe AG filed Critical Phywe AG
Priority to DEP20229A priority Critical patent/DE1063532B/en
Publication of DE1063532B publication Critical patent/DE1063532B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/08—Centrifuges for separating predominantly gaseous mixtures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
    • B04B13/003—Rotor identification systems

Landscapes

  • Centrifugal Separators (AREA)

Description

Zentrifuge, insbesondere Ultrazentrifuge, mit auswechselbarem Rotor Die für den Betrieb von Maschinen. zulässigen Höchstdrehzahlen sind durch die mechanische Festigkeit der rotierenden Teile begrenzt. Um die Überschreitung der höchstzulässigen Drehzahlen, welche eine Zerstörung des rotierenden Teils zur Folge haben könnte, zu verhindern, sind mannigfache Vorrichtungen bekannt.Centrifuge, especially ultracentrifuge, with exchangeable rotor Those for the operation of machines. permissible maximum speeds are due to the mechanical Limited strength of rotating parts. In order to exceed the maximum permissible Speeds, which could result in the destruction of the rotating part, To prevent a variety of devices are known.

Solche Vorrichtungen sind beispielsweise auch in Zentrifugen eingebaut. Bei diesen kommt es vor, daß sie mit verschiedenen Rotoren benutzt werden. können, deren Festigkeit und damit höchstzulässige Drehzahl je nach Größe, Form und Material des Rotars verschieden ist. Außerdem laufen Zentrifugenrotoren - von wenigen Ausnahmen abgesehen - in geschlossenen, Gehäusen, so daß während des Laufes nicht festgestellt werden kann, welcher Rotor gerade benutzt wird. Wird bei solchen Rotoren die Höchstdrehzahl überschritten, so ist damit häufig eine Zerstörung des Rotors und der gesamten Zentrifuge verbunden. Es ist also notwendig, die Höchstdrehzahl der Rotoren schon vor dem Anlauf der Zentrifuge zu begrenzen und von dein speziell benutzten Rotor abhängig zu machen, damit ein Überdrehen des Rotars verhindert wird.Such devices are also built into centrifuges, for example. With these it happens that they are used with different rotors. can, their strength and thus the maximum permissible speed depending on size, shape and material of the Rotar is different. In addition, centrifuge rotors run - with a few exceptions apart - in closed, housings, so that not detected during the run which rotor is currently being used. This is the maximum speed for such rotors exceeded, the rotor and the entire centrifuge are often destroyed tied together. It is therefore necessary to set the maximum speed of the rotors before starting limit the centrifuge and make it dependent on the particular rotor used, so that over-turning of the rotor is prevented.

Erfindungsgemäß wird vorgeschlagen, die Rotoren mit für ihre jeweilige Höchstdrehzahl charakteristischen. Elementen zu versehen und diese Elemente schon vor dem Anlaufen durch einen Fühler abzutasten und mit ihrer Hilfe die Höchstdrehzahl voreinzustellen bzw. zu begrenzen. Dabei ist zugleich dafür zu sorgen, daß erst nach Abtastung des Rotors und dadurch bewirkter Einstellung der Drehzahl die Zentrifuge in Betrieb gesetzt werden kann.According to the invention it is proposed that the rotors with for their respective Maximum speed characteristic. Elements and these elements already before starting to be scanned by a sensor and with its help the maximum speed preset or limit. At the same time, it must be ensured that only after scanning the rotor and thereby adjusting the speed, the centrifuge can be put into operation.

Das Abtasten der Elemente kann mit an sich bekannten mechanischen, elektrischen, magnetischen, thermischen oder optischen Mitteln geschehen, welche über einen Fühler den Antriebsmechanismus derart beeinflussen, daß eineÜberschreitung der eingestellten Drehzahl verhindert wird.The scanning of the elements can be carried out with known mechanical, electrical, magnetic, thermal or optical means happen, which influence the drive mechanism via a sensor in such a way that the the set speed is prevented.

Gleichermaßen kann es wichtig sein, mit der erfindungsgemäß ausgebildeten Vorrichtung anstatt der Höchstdrehzahl oder zusammen mit dieser weitere Drehzahlen, z. B. kritische Drehzahlen, einzustellen.Equally, it can be important to use the one designed according to the invention Device instead of the maximum speed or together with this additional speeds, z. B. critical speeds to adjust.

Die Zeichnung zeigt in Fig. 1 und 2 eine Ausführungsform eines solchen Rotors. Auf dem Rotar 1 ist bei 2 eine spiegelnde Fläche angeordnet, welche einen von einer Lichtquelle 3 ausgehenden Lichtstrahl 4 auf eine Fotozelle5 wirft. Die einzustellende Drehzahl für den, Rotor ist durch die Stellung der spiegelnden Fläche zum einfallenden Lichtstrahl charakterisiert. Die Fotozelle S beeinflußt durch ihren Fotostrom den Antriebsmechanismus für den Rotor.The drawing shows an embodiment of such a device in FIGS. 1 and 2 Rotor. On the Rotar 1 a reflective surface is arranged at 2, which a Throws light beam 4 emanating from a light source 3 onto a photocell 5. the The speed to be set for the rotor is determined by the position of the reflective surface characterized to the incident light beam. The photocell S is influenced by their Photocurrent the drive mechanism for the rotor.

Claims (3)

PATENTANSPRÜCHE: 1. Zentrifuge, insbesondere Ultrazentrifuge, mit auswechselbarem Rotor, dadurch gekennzeichnet, daß der Rotor mit an sich bekannten, für seine Höchstdrehzahl charakteristischen Elementen versehen ist, welche schon vor dem Anlauf der Zentrifuge mit an sich bekannten Mitteln abgetastet werden. PATENT CLAIMS: 1. Centrifuge, especially ultracentrifuge, with exchangeable rotor, characterized in that the rotor with per se known, features characteristic elements for its maximum speed, which already before the centrifuge is started up, they can be scanned by means known per se. 2. Zentrifuge nach Anspruch 1, dadurch gekennzeichnet, da.ß die Abtastung die Einstellung der zulässigen Höchstdrehzahl der Rotoren bewirkt und ihre Überschreitung verhindert. 2. Centrifuge according to Claim 1, characterized in that the scanning controls the setting causes the maximum permissible speed of the rotors and prevents it from being exceeded. 3. Zentrifuge nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Inbetriebnahme der Zentrifuge erst nach der Abtastung des Rotors möglich ist. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 365 263, 932 524; französische Patentschrift Nr. 692 953; USA.-Patentschriften Nr. 2 692 951, 2 731599. 3. Centrifuge according to Claims 1 and 2, characterized in that the centrifuge can only be started up after the rotor has been scanned. Considered publications: German Patent Specifications Nos. 365 263, 932 524; French Patent No. 692,953; U.S. Patent Nos. 2,692,951, 2,731,599.
DEP20229A 1958-02-28 1958-02-28 Centrifuge, especially ultracentrifuge, with exchangeable rotor Pending DE1063532B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP20229A DE1063532B (en) 1958-02-28 1958-02-28 Centrifuge, especially ultracentrifuge, with exchangeable rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP20229A DE1063532B (en) 1958-02-28 1958-02-28 Centrifuge, especially ultracentrifuge, with exchangeable rotor

Publications (1)

Publication Number Publication Date
DE1063532B true DE1063532B (en) 1959-08-13

Family

ID=7367757

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP20229A Pending DE1063532B (en) 1958-02-28 1958-02-28 Centrifuge, especially ultracentrifuge, with exchangeable rotor

Country Status (1)

Country Link
DE (1) DE1063532B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233175B (en) * 1962-01-09 1967-01-26 Martin Christ Fa Ultracentrifuge with exchangeable rotor and a device that indicates a certain speed
DE2622110A1 (en) * 1975-05-21 1976-12-02 Molter Gmbh Dr CENTRIFUGE
DE3305461A1 (en) * 1982-02-17 1983-08-25 Kabushiki Kaisha Kubota Seisakusho, Tokyo AUTOMATIC DISCRIMINATOR FOR DIFFERENTIATING BETWEEN DIFFERENT ROTOR TYPES
US5235864A (en) * 1990-12-21 1993-08-17 E. I. Du Pont De Nemours And Company Centrifuge rotor identification system based on rotor velocity
WO1996001697A1 (en) * 1994-07-07 1996-01-25 Beckman Instruments, Inc. Automatic rotor identification based on a rotor-transmitted signal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE365263C (en) * 1920-02-19 1922-12-12 Karl Sophus Frederik Petersen Device for automatically preventing motor vehicles from exceeding a certain speed
FR692953A (en) * 1929-07-02 1930-11-13 Ets Edouard Belin Method for controlling the frequency of vibrating tuning forks
US2692951A (en) * 1952-02-26 1954-10-26 Sun Oil Co Apparatus for measuring shaft rotation
DE932524C (en) * 1953-03-21 1955-09-01 Niebuhr K G Physikalisch Chemi Contact arrangement for the number of revolutions
US2731599A (en) * 1952-06-10 1956-01-17 Lawrence H Groeper Variable reluctance rotary speed sensing element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE365263C (en) * 1920-02-19 1922-12-12 Karl Sophus Frederik Petersen Device for automatically preventing motor vehicles from exceeding a certain speed
FR692953A (en) * 1929-07-02 1930-11-13 Ets Edouard Belin Method for controlling the frequency of vibrating tuning forks
US2692951A (en) * 1952-02-26 1954-10-26 Sun Oil Co Apparatus for measuring shaft rotation
US2731599A (en) * 1952-06-10 1956-01-17 Lawrence H Groeper Variable reluctance rotary speed sensing element
DE932524C (en) * 1953-03-21 1955-09-01 Niebuhr K G Physikalisch Chemi Contact arrangement for the number of revolutions

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233175B (en) * 1962-01-09 1967-01-26 Martin Christ Fa Ultracentrifuge with exchangeable rotor and a device that indicates a certain speed
DE2622110A1 (en) * 1975-05-21 1976-12-02 Molter Gmbh Dr CENTRIFUGE
DE3305461A1 (en) * 1982-02-17 1983-08-25 Kabushiki Kaisha Kubota Seisakusho, Tokyo AUTOMATIC DISCRIMINATOR FOR DIFFERENTIATING BETWEEN DIFFERENT ROTOR TYPES
US5235864A (en) * 1990-12-21 1993-08-17 E. I. Du Pont De Nemours And Company Centrifuge rotor identification system based on rotor velocity
WO1996001697A1 (en) * 1994-07-07 1996-01-25 Beckman Instruments, Inc. Automatic rotor identification based on a rotor-transmitted signal

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