GB9904382D0 - Bearing structure - Google Patents

Bearing structure

Info

Publication number
GB9904382D0
GB9904382D0 GB9904382A GB9904382A GB9904382D0 GB 9904382 D0 GB9904382 D0 GB 9904382D0 GB 9904382 A GB9904382 A GB 9904382A GB 9904382 A GB9904382 A GB 9904382A GB 9904382 D0 GB9904382 D0 GB 9904382D0
Authority
GB
United Kingdom
Prior art keywords
rotor
magnetic bearings
pivot
pairs
shaft end
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.)
Withdrawn
Application number
GB9904382A
Other versions
GB2335242A (en
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.)
Nidec Copal Electronics Corp
Original Assignee
Copal Electronics Co Ltd
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 Copal Electronics Co Ltd filed Critical Copal Electronics Co Ltd
Publication of GB9904382D0 publication Critical patent/GB9904382D0/en
Publication of GB2335242A publication Critical patent/GB2335242A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/062—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/058—Bearings magnetic; electromagnetic
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep 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
    • F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
    • 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
    • F16C32/0408—Passive magnetic bearings
    • F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
    • F16C32/0417—Passive magnetic bearings with permanent magnets on one part attracting the other part for axial load mainly
    • 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
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0425—Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly
    • 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
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

A bearing structure has one or two (figs 2, 5) pairs of axially spaced permanent magnetic bearings 3, 4 for radially supporting a rotor 1 at two supporting points in a non-contact manner. Thrust forces F1, F2 of each magnetic bearing in a pair act in opposite axial directions and a pivot 5a on an axis 7 of the rotor 1 bears a shaft end 5b of the rotor 1 when the shaft end 5b is displaced in an axial direction from the neutral position where all thrust forces acting on the rotor balance. The magnetic bearings 3, 4 may attract or repel (figs 4-6) and be orientated axially or radially (figs 4-6) of the rotor 1. To cope with excessive rotor displacements in both axial directions, a further stop 6 (8 fig 4) or second pivot (figs 7, 8) may be used. Stop 6 may also space the magnets 4a, 4b to prevent sticking. Two pairs of magnetic bearings may be concentric (fig 2). The rotor may be for a motor, fan or polygonal mirror.
GB9904382A 1998-03-12 1999-02-25 Rotor support with one or two pairs of permanent magnetic bearings and a pivot Withdrawn GB2335242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10529898 1998-03-12

Publications (2)

Publication Number Publication Date
GB9904382D0 true GB9904382D0 (en) 1999-04-21
GB2335242A GB2335242A (en) 1999-09-15

Family

ID=14403795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9904382A Withdrawn GB2335242A (en) 1998-03-12 1999-02-25 Rotor support with one or two pairs of permanent magnetic bearings and a pivot

Country Status (4)

Country Link
CN (1) CN1229307A (en)
DE (1) DE19910872A1 (en)
FR (1) FR2776037A1 (en)
GB (1) GB2335242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112334182A (en) * 2018-05-16 2021-02-05 开迪恩有限公司 Rotor bearing system

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105967B2 (en) * 2000-11-10 2006-09-12 Delta Electronics Inc. Heat dissipating device with a combination bearing assembly having magnetic bearing rings and a sleeve bearing
CN100368696C (en) * 2002-07-10 2008-02-13 特伯考尔公司 Device to relieve thrust load in a rotor-bearing system using permanent magnets
CA2463149C (en) 2002-08-30 2010-05-25 Ebm-Papst St. Georgen Gmbh & Co. Kg Arrangement with a plain bearing
DE10321925B4 (en) * 2003-05-15 2008-10-02 Vacuumschmelze Gmbh & Co. Kg Radial magnetic bearing, method for assembling a magnetic bearing and rotary machine with a radial magnetic bearing
FR2863023B1 (en) * 2003-12-01 2007-01-19 Cit Alcatel MAGNETIC ROD AND JOINT ASSEMBLY USING THE BALL
TWI249899B (en) 2004-02-20 2006-02-21 Delta Electronics Inc Magnetic-bearing motor and magnetic-bearing thereof
CN100570160C (en) * 2004-03-19 2009-12-16 台达电子工业股份有限公司 Magnetic-bearing motor and magnetic bearing assembly thereof
CN100392239C (en) * 2005-02-22 2008-06-04 曾碚凯 Vertical shaft high power wind-driven generator
JP4528153B2 (en) * 2005-02-23 2010-08-18 日本碍子株式会社 Method for manufacturing plugged honeycomb structure
EP1892816A1 (en) 2006-08-24 2008-02-27 Chien-Chun Yu Magnetic floating shaft set and apparatus using same
US7847454B2 (en) * 2007-03-08 2010-12-07 General Electric Company Encapsulated stator assembly and process for making
WO2010026523A2 (en) * 2008-09-04 2010-03-11 Koninklijke Philips Electronics N.V. Rotating ring apparatus
WO2011001290A2 (en) * 2009-07-02 2011-01-06 Steorn Limited Passive magnetic bearing
RU2475928C1 (en) * 2011-06-16 2013-02-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" High-rate magnetoelectric machine with vertical shaft
NL2010970C2 (en) * 2013-06-14 2014-12-17 Penta Robotics Patents B V MAGNETIC GLOBE HINGE AND ROBOT EQUIPPED WITH THE GLOBE HINGE.
CN103790962A (en) * 2014-01-14 2014-05-14 北京良明同创水处理设备开发中心 Magnetic push suspension bearing unit
CN107965521A (en) * 2017-12-20 2018-04-27 邢和海 Radial permanent magnet magnetic suspension bearing
DE102018201030A1 (en) 2018-01-24 2019-07-25 Kardion Gmbh Magnetic coupling element with magnetic bearing function
DE102018211327A1 (en) 2018-07-10 2020-01-16 Kardion Gmbh Impeller for an implantable vascular support system
JP7270375B2 (en) 2018-12-25 2023-05-10 株式会社前川製作所 Work tool for butchering bone-in meat
CN109780059A (en) * 2019-03-07 2019-05-21 苏州赛得尔智能科技有限公司 A kind of four-degree-of-freedom linear motor magnetic suspension bearing
DE102020102474A1 (en) 2020-01-31 2021-08-05 Kardion Gmbh Pump for conveying a fluid and method for manufacturing a pump
JP6892004B1 (en) * 2020-03-30 2021-06-18 ダイキン工業株式会社 Motor system and turbo compressor equipped with it

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE528187A (en) * 1953-04-22 1900-01-01
CH583856A5 (en) * 1974-09-27 1977-01-14 Balzers Patent Beteilig Ag
DE3300889A1 (en) * 1983-01-13 1984-07-19 Bosch Gmbh Robert CIRCUIT PUMP WITH MAGNETICALLY BEARED ROTOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112334182A (en) * 2018-05-16 2021-02-05 开迪恩有限公司 Rotor bearing system

Also Published As

Publication number Publication date
CN1229307A (en) 1999-09-22
FR2776037A1 (en) 1999-09-17
GB2335242A (en) 1999-09-15
DE19910872A1 (en) 1999-10-14

Similar Documents

Publication Publication Date Title
GB9904382D0 (en) Bearing structure
DE69017248D1 (en) Spindle motor.
WO2001086151A3 (en) Magnetic bearing with damping
CA2301151A1 (en) Turbocharger integrated bearing system
US6617732B1 (en) Magnetic bearing structure
TW430722B (en) Cooled screw-vacuum-pump
EP1115193A3 (en) Magnetic levitation motor and method for manufacturing the same
GB2376725A (en) Bearings
AU9178991A (en) High temperature superconducting magnetic bearings
EP0367387A3 (en) Eddy current retarder
EP1046821A3 (en) Magnetic bearing protective device and turbomolecular pump
DE50310380D1 (en) ARRANGEMENT WITH A SLIDING BEARING
FR2760496B1 (en) ARRANGEMENT OF A TREE IN A SUPPORT
SE9700256D0 (en) Magnet-stored high-speed vacuum pump
EP0848174A3 (en) Magnetic thrust compensators
EP0693630A3 (en) Magnetic thrust bearing
FI974401A0 (en) Foerfarande Foer producering av oevertrycksgas
US6933642B2 (en) Hydrodynamic gas bearing
KR960003029A (en) motor
JPS57154516A (en) Bearing device for rapidly rotating body
WO1996008831A3 (en) Improved permanent magnet design for high-speed superconducting bearings
EP1188932A3 (en) Bearing structure for laser fan
CN2288305Y (en) Magnetic suspension bearing
JPS61294218A (en) Fluid bearing device
JPH06235420A (en) Spindle motor

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)