WO2012154066A1 - Magnetic bearing and magnetic bearing mode of action - Google Patents

Magnetic bearing and magnetic bearing mode of action Download PDF

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Publication number
WO2012154066A1
WO2012154066A1 PCT/PL2012/000027 PL2012000027W WO2012154066A1 WO 2012154066 A1 WO2012154066 A1 WO 2012154066A1 PL 2012000027 W PL2012000027 W PL 2012000027W WO 2012154066 A1 WO2012154066 A1 WO 2012154066A1
Authority
WO
WIPO (PCT)
Prior art keywords
rings
magnetic
magnets
magnetic bearing
bearing
Prior art date
Application number
PCT/PL2012/000027
Other languages
French (fr)
Inventor
Paweł Krzysztof Licznerski
Sylwester WEBER
Original Assignee
Licznerski Pawel Krzysztof
Weber Sylwester
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 Licznerski Pawel Krzysztof, Weber Sylwester filed Critical Licznerski Pawel Krzysztof
Publication of WO2012154066A1 publication Critical patent/WO2012154066A1/en

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Classifications

    • 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
    • F16C32/0429—Passive magnetic bearings with permanent magnets on both parts repelling each other for both radial and axial load, e.g. conical magnets
    • 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
    • F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly

Definitions

  • This invention relates to magnetic bearing, which stabilizes the rotation of rotating machine parts using neodymium magnets at the same time in radial and axial direction.
  • the invention applies in particular to the oscillating and vibrating machinery, tank stirrers, horizontal transport systems, such as conveyor belts, conveyors, spiral feeders, rotating machines motors, generators, turbines, pumps and compressors, both in chemically aggressive, dirty, humid or dusty enviroment.
  • magnetic bearings where the sources of the levitating interactions are dynamic effects of magnetic forces emanating from the electromagnets called electromagnetic actuators.
  • electromagnetic actuators In such systems, a distinction is made independently axial controlled magnetic bearings (parallel to the axis of the rotor) and radial controlled magnetic bearings (perpendicular to the axis of the rotor).
  • axial controlled magnetic bearings parallel to the axis of the rotor
  • radial controlled magnetic bearings perpendicular to the axis of the rotor
  • the essence of magnetic bearing solutions according to the invention lies in its structure, consisting of two components of mobile and stationary one, arranged alternately, which are characterized by opposite polarization vectors and are equipped with magnetic rings 3 and 4, built from group of points magnets of any section or full magnets in the shape of rings or ring segments, which interact with each other preferably in places where the magnetic field lines have the opposite turn.
  • the essence of the mode of action of the magnetic bearing according to the invention is the combination of many separate and opposite arrangement of magnetic fields, mobile and stationary, as shown in Figure 4A, into one coherent rotating magnetic field system, as shown in Figure 4B, where there is mutual centering mobile magnetic systems relative to stationary magnetic systems, as a result of new waveforms generated magnetic field lines, the distance h between the axis of the rings 3 and axis of the rings 4 is between 0.5 a ⁇ h ⁇ 1.5 a, where a is the width of the rings 3 and rings 4, as shown in Figure 4 A and Figure 4B.
  • Figure 1A shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a series of magnet points in the shape of a cylinder and two mobile systems built from a single magnetic ring, also created from a series of point magnets in the shape of a cylinder.
  • Figure IB shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a series of point magnets in the shape of a trapezoid and two mobile systems built from a single magnetic ring, also created from a series of point magnets in the shape of a trapezoid.
  • Figure ID shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a segments of one annular magnet and two mobile systems built from a single magnetic ring, also formed from a segments of one annular magnet.
  • Figure IE shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a series of point magnets in the shape of a cylinder and two mobile systems built from a single magnetic ring formed from from one whole annular magnet.
  • Figure 2 shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single mobile magnetic ring formed from a series of point magnets in the shape of a cylinder and two stationary systems built from a single magnetic ring, also created from a series of point magnets in the shape of a cylinder.
  • Figure 3 shows in isometric view the assembly of an exemplary magnetic bearing system, built from a dual stationary magnetic rings formed from a series of point magnets in the shape of a cylinder and two mobile systems built from a dual magnetic rings, also created from a series of point magnets in the shape of a cylinder.
  • Figure 4A shows a schematic cross-sectional view of magnetic field lines before the magnetic merger of mobile and stationary parts
  • Figure 4B shows a schematic cross-sectional view of magnetic field lines after the magnetic merger of mobile and stationary parts corresponding to the arrangement in working status.
  • Preferred features of the bearing of the invention are simple design and extended the life of the bearings due to lack of friction, as well as vibration damping of the rotating machine parts such as engines, rotors and generators, compressors and pumps, rotors, and the rotating centrifuge parts, gears, etc.
  • the technical advantage of the invention is any scale of the point neodymium magnets, and any number of rings of this magnets, which are characteristics directly affect the strength of the magnetic bearing. No friction, no lubricant medium and the opportunity to work in any environment make the applicability of the bearings according to the invention are extremely versatile.

Abstract

This invention relates to magnetic bearing and magnetic bearing mode of action, stabilizing the rotation of rotating machine parts using neodymium magnets both in radial and axial direction, the bearing is composed of one stationary mounting component 1 and the two rotating components 2, wherein components 1 and 2 are equipped with magnetic rings 3 and 4 and are constructed from a series of point magnets of any section or full magnets in the shape of ring segments, and the polarization components 1 and 2 are opposed, in the bearing there is a mutual centering mobile magnetic systems relative to stationary magnetic systems as a result of new waveforms generated magnetic field lines, and the distance h between the axis of the rings 3 and axis of the rings 4 is between 0.5 a < h < 1.5 a, where a is the width of the rings 3 and rings 4.

Description

Magnetic bearing and magnetic bearing mode of action.
This invention relates to magnetic bearing, which stabilizes the rotation of rotating machine parts using neodymium magnets at the same time in radial and axial direction.
The invention applies in particular to the oscillating and vibrating machinery, tank stirrers, horizontal transport systems, such as conveyor belts, conveyors, spiral feeders, rotating machines motors, generators, turbines, pumps and compressors, both in chemically aggressive, dirty, humid or dusty enviroment.
There are examples of magnetic bearings, where the sources of the levitating interactions are dynamic effects of magnetic forces emanating from the electromagnets called electromagnetic actuators. In such systems, a distinction is made independently axial controlled magnetic bearings (parallel to the axis of the rotor) and radial controlled magnetic bearings (perpendicular to the axis of the rotor). Thus constructed systems are unstable and in need of an external control system to stabilize the position of a rotating object.
Such solutions are based on a completely different method of action than the object of the invention, they need the continuous power and as such are not taken into account for the present state of the art.
It is also known from patent specification EN 20 832, ball bearing lubricated with magnetic fluid, which is mounted on the spherical shaft pin (1), adjacent to the acetabulum (3), preferably porous, saturated liquid density (7) placed in the housing (5) and separating the pin from the permanent magnet (4) located in the socket housing, with both sides of the magnet and the acetabulum are multi-edge pole pieces (6) is also embedded in the socket housing. Magnetic fluid, located in the gaps formed between the surface of the spigot and performances polepieces a bearing seal and the fluid at the contact of the shaft and the acetabulum is a lubricating layer. There are also examples of passive magnetic bearings, the source of impacts on the levitating object are static interaction of magnetic forces of permanent magnets, especially neodymium. It is also known patent number of solutions, which contain solutions with permanent magnets as a source of influence, but different in its construction in comparison to the invention.
Analyzed in detail publications: JP 7123634, U.S. 5495221, WO 9716882, U.S. 5831362, U.S. 5894181, U.S. 61 18199, WO 0184693, U.S. 2002047404, U.S. 200207488. Analysis of the above publications did not show similar solutions to the invention in terms of spatial design solutions. The main difference between the invention and the above solutions concerns the mode of action of the magnetic bearing.
In the bearing according to the invention there is a group of points magnetic fields, which center and stabilize the rotating central magnetic field. Thus, controlling the position of the rotor is followed spontaneously only through preferred potentials of the mobile and immobile magnetic fields, which also tend to seek the lowest energy state, which provides a centering and stabilization of a rotating central magnetic field.
The essence of magnetic bearing solutions according to the invention lies in its structure, consisting of two components of mobile and stationary one, arranged alternately, which are characterized by opposite polarization vectors and are equipped with magnetic rings 3 and 4, built from group of points magnets of any section or full magnets in the shape of rings or ring segments, which interact with each other preferably in places where the magnetic field lines have the opposite turn.
The essence of the mode of action of the magnetic bearing according to the invention is the combination of many separate and opposite arrangement of magnetic fields, mobile and stationary, as shown in Figure 4A, into one coherent rotating magnetic field system, as shown in Figure 4B, where there is mutual centering mobile magnetic systems relative to stationary magnetic systems, as a result of new waveforms generated magnetic field lines, the distance h between the axis of the rings 3 and axis of the rings 4 is between 0.5 a < h < 1.5 a, where a is the width of the rings 3 and rings 4, as shown in Figure 4 A and Figure 4B.
The invention has been visualized in the accompanying drawings in the embodiments, in which:
Figure 1A shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a series of magnet points in the shape of a cylinder and two mobile systems built from a single magnetic ring, also created from a series of point magnets in the shape of a cylinder.
Figure IB shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a series of point magnets in the shape of a trapezoid and two mobile systems built from a single magnetic ring, also created from a series of point magnets in the shape of a trapezoid. Figure ID shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a segments of one annular magnet and two mobile systems built from a single magnetic ring, also formed from a segments of one annular magnet.
Figure IE shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single stationary magnetic ring formed from a series of point magnets in the shape of a cylinder and two mobile systems built from a single magnetic ring formed from from one whole annular magnet.
Figure 2 shows in isometric view the assembly of an exemplary magnetic bearing system, built from a single mobile magnetic ring formed from a series of point magnets in the shape of a cylinder and two stationary systems built from a single magnetic ring, also created from a series of point magnets in the shape of a cylinder.
Figure 3 shows in isometric view the assembly of an exemplary magnetic bearing system, built from a dual stationary magnetic rings formed from a series of point magnets in the shape of a cylinder and two mobile systems built from a dual magnetic rings, also created from a series of point magnets in the shape of a cylinder.
Figure 4A shows a schematic cross-sectional view of magnetic field lines before the magnetic merger of mobile and stationary parts,
Figure 4B shows a schematic cross-sectional view of magnetic field lines after the magnetic merger of mobile and stationary parts corresponding to the arrangement in working status.
Preferred features of the bearing of the invention are simple design and extended the life of the bearings due to lack of friction, as well as vibration damping of the rotating machine parts such as engines, rotors and generators, compressors and pumps, rotors, and the rotating centrifuge parts, gears, etc.
The technical advantage of the invention is any scale of the point neodymium magnets, and any number of rings of this magnets, which are characteristics directly affect the strength of the magnetic bearing. No friction, no lubricant medium and the opportunity to work in any environment make the applicability of the bearings according to the invention are extremely versatile.

Claims

Claims
1. Magnetic bearing with magnets, characterized in that it is composed of one stationary mounting component 1 and two mobile rotating components 2, the components 1 and 2 are equipped with magnetic rings 3 and 4, which are constructed from a series of point magnets of any section or full magnets in the shape of rings or slices.
2. Magnetic bearing with magnets, characterized in that it is composed of two stationary mounting components 1 and one mobile rotating component 2, the components 1 and 2 are equipped with magnetic rings 3 and 4, which are constructed from a series of point magnets of any section or full magnets in the shape of rings or slices.
3. Magnetic bearing of claim 1, 2, characterized in that the rings are shaped of the uniform magnetic rings.
4. Magnetic bearing of claim 1, 2, characterized in that the rings are shaped of the magnetic ring segments.
5. Magnetic bearing of claim 1, 2, characterized in that the rings are shaped of the points magnets of any cross-section.
6. Magnetic bearing of claim 1, 2, characterized in that the magnetic rings are in the form of mixed systems consisting of a single ring or ring segments or points magnets of any cross-section.
7. Magnetic bearing of claim 1, 2, characterized in that the components 1 and 2 have any number of rings 3 and 4, the polarization of all rings 3 mounted on the component 1 and all rings 4 mounted on the component 2 are identical.
8. Magnetic bearing according to claim 1, 2, characterized in that the polarization components 1 and 2 are the opposite.
9. The magnetic bearing mode of action according to the invention is characterized in that in the bearing multiple separate and opposed magnetic systems are connected into one coherent magnetic system, where there is a mutual centering mobile magnetic systems relative to stationary magnetic systems as a result of new waveforms generated magnetic field lines, and the distance h between the axis of the rings 3 and axis of the rings 4 is between 0.5 a < h <1.5 a, where a is the width of the rings 3 and rings 4.
PCT/PL2012/000027 2011-05-06 2012-04-30 Magnetic bearing and magnetic bearing mode of action WO2012154066A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.394800 2011-05-06
PL394800A PL394800A1 (en) 2011-05-06 2011-05-06 Magnetic bearing and magnetic bearing mode of action

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600069910A1 (en) * 2016-07-05 2018-01-05 Spinning Top Energy S R L FLYWHEEL ACCUMULATOR

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL423034A1 (en) * 2017-10-02 2019-04-08 Artur Łukasiewicz Magnetic bearing

Citations (14)

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Publication number Priority date Publication date Assignee Title
DE2116686A1 (en) * 1971-04-06 1972-10-19 Doerfler G Magnet bearings
JPS5536635A (en) * 1978-09-04 1980-03-14 Sumitomo Special Metals Co Ltd Magnetic bearing
JPS6353315A (en) * 1986-08-20 1988-03-07 Secoh Giken Inc Bearing device for rotary shaft
JPH01204211A (en) * 1988-02-09 1989-08-16 Hitachi Ltd Revolving head device
JPH0293119A (en) * 1988-09-29 1990-04-03 Fuji Elelctrochem Co Ltd Magnetic bearing device
JPH07123634A (en) 1993-10-20 1995-05-12 Mitsubishi Heavy Ind Ltd Passive-type magnetic bearing
US5495221A (en) 1994-03-09 1996-02-27 The Regents Of The University Of California Dynamically stable magnetic suspension/bearing system
WO1997016882A1 (en) 1995-11-03 1997-05-09 The Regents Of The University Of California Passive magnetic bearing element with minimal power losses
US5831362A (en) 1994-11-01 1998-11-03 The University Of Houston Magnet-superconductor flywheel and levitation systems
US5894181A (en) 1997-07-18 1999-04-13 Imlach; Joseph Passive magnetic bearing system
US6118199A (en) 1997-01-28 2000-09-12 Magnetal Ab Magnetic bearings
WO2001084693A1 (en) 2000-05-01 2001-11-08 Indigo Energy, Inc. Full levitation bearing system with improved passive radial magnetic bearings
US20020007488A1 (en) 2000-06-19 2002-01-17 Dan Kikinis Transparent object management for removable media recorders
US20020047404A1 (en) 2000-07-04 2002-04-25 Norbert Coenen Rotor spinning device with a contactless, passive, radial bearing for the spinning rotor

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2116686A1 (en) * 1971-04-06 1972-10-19 Doerfler G Magnet bearings
JPS5536635A (en) * 1978-09-04 1980-03-14 Sumitomo Special Metals Co Ltd Magnetic bearing
JPS6353315A (en) * 1986-08-20 1988-03-07 Secoh Giken Inc Bearing device for rotary shaft
JPH01204211A (en) * 1988-02-09 1989-08-16 Hitachi Ltd Revolving head device
JPH0293119A (en) * 1988-09-29 1990-04-03 Fuji Elelctrochem Co Ltd Magnetic bearing device
JPH07123634A (en) 1993-10-20 1995-05-12 Mitsubishi Heavy Ind Ltd Passive-type magnetic bearing
US5495221A (en) 1994-03-09 1996-02-27 The Regents Of The University Of California Dynamically stable magnetic suspension/bearing system
US5831362A (en) 1994-11-01 1998-11-03 The University Of Houston Magnet-superconductor flywheel and levitation systems
WO1997016882A1 (en) 1995-11-03 1997-05-09 The Regents Of The University Of California Passive magnetic bearing element with minimal power losses
US6118199A (en) 1997-01-28 2000-09-12 Magnetal Ab Magnetic bearings
US5894181A (en) 1997-07-18 1999-04-13 Imlach; Joseph Passive magnetic bearing system
WO2001084693A1 (en) 2000-05-01 2001-11-08 Indigo Energy, Inc. Full levitation bearing system with improved passive radial magnetic bearings
US20020007488A1 (en) 2000-06-19 2002-01-17 Dan Kikinis Transparent object management for removable media recorders
US20020047404A1 (en) 2000-07-04 2002-04-25 Norbert Coenen Rotor spinning device with a contactless, passive, radial bearing for the spinning rotor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600069910A1 (en) * 2016-07-05 2018-01-05 Spinning Top Energy S R L FLYWHEEL ACCUMULATOR
WO2018007931A1 (en) * 2016-07-05 2018-01-11 Spinning Top Energy S.R.L. Flywheel kinetic accumulator
US20190312482A1 (en) * 2016-07-05 2019-10-10 Spinning Top Energy S.R.L. Flywheel kinetic accumulator
US10804767B2 (en) 2016-07-05 2020-10-13 Spinning Top Energy S.R.L. Flywheel kinetic accumulator

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