GB1336347A - Centrifuge having a rotor and including a device for stabi lizing the rotor movement - Google Patents

Centrifuge having a rotor and including a device for stabi lizing the rotor movement

Info

Publication number
GB1336347A
GB1336347A GB4918071A GB4918071A GB1336347A GB 1336347 A GB1336347 A GB 1336347A GB 4918071 A GB4918071 A GB 4918071A GB 4918071 A GB4918071 A GB 4918071A GB 1336347 A GB1336347 A GB 1336347A
Authority
GB
United Kingdom
Prior art keywords
ring
flange
rotor
magnet
induction
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
GB4918071A
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.)
KERNVERFAHRENSTECHNIK GmbH
Original Assignee
KERNVERFAHRENSTECHNIK 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 KERNVERFAHRENSTECHNIK GmbH filed Critical KERNVERFAHRENSTECHNIK GmbH
Publication of GB1336347A publication Critical patent/GB1336347A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
    • H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
    • H02K49/043—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with a radial airgap
    • 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
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
    • H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
    • H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H02K7/16—Structural association with mechanical loads, e.g. with hand-held machine tools or fans for operation above the critical speed of vibration of the rotating parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

1336347 Eddy current damping KERNVERFAHRENSTECHNIK mbH GES FUR 22 Oct 1971 [6 Nov 1970] 49180/71 Heading F2S [Also in Division B2] In a centrifuge having a rotor 1 which revolves about a vertical axis, a device for stabilizing the rotor comprises a magnetic bearing consisting of an axially-polarized, ring-shaped magnet 6 and a ring or flange 3 made at least partly of ferromagnetic material, the ring or flange 3 being attached to the rotor 1 and the magnet 6 to the centrifuge housing, or vice versa, so as to leave a clearance 4 between the ring or flange and the magnet, and the ring or flange carrying at least one induction ring 9. As shown, the flange 3 is integral with a cover 2 of the rotor 1 and the induction ring 9, which may be of copper, aluminium or an alloy thereof, is embedded in a groove provided in the flange. The ring-shaped magnet 6 is a permanent magnet carried by a hub 5 which is vertically adjustable on a threaded spindle 7 connected to the centrifuge housing. The magnet 6 has an annular groove 11 on its underside facing the ring 9. If during operation the rotor is deflected radially as a consequence of vibrations, the interaction between the flange 3 and the magnet 6 generates restoring forces which return the rotor to its original position. At the same time, eddy currents are generated in the induction ring 9 which absorb at least part of the vibration energy. A number of spaced concentric induction rings may be embedded in the ring or flange 3.
GB4918071A 1970-11-06 1971-10-22 Centrifuge having a rotor and including a device for stabi lizing the rotor movement Expired GB1336347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702054679 DE2054679A1 (en) 1970-11-06 1970-11-06 Device for stabilizing the rotor movement of high-speed centrifuges

Publications (1)

Publication Number Publication Date
GB1336347A true GB1336347A (en) 1973-11-07

Family

ID=5787372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4918071A Expired GB1336347A (en) 1970-11-06 1971-10-22 Centrifuge having a rotor and including a device for stabi lizing the rotor movement

Country Status (4)

Country Link
DE (1) DE2054679A1 (en)
FR (1) FR2113563A5 (en)
GB (1) GB1336347A (en)
NL (1) NL7114953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028468A1 (en) * 2006-09-05 2008-03-13 Schaeffler Kg Drive device for separators

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2447136A1 (en) * 1974-10-02 1976-04-22 Denisow Wladilen Michailowitsc Ultra centrifuge for medicinal preparations - has magnetically hung rotor and drive inside vacuum tight housing with no revolving seals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028468A1 (en) * 2006-09-05 2008-03-13 Schaeffler Kg Drive device for separators

Also Published As

Publication number Publication date
DE2054679A1 (en) 1972-05-18
NL7114953A (en) 1972-05-09
FR2113563A5 (en) 1972-06-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee