CA2426846A1 - Magnetically hard object and method for adjusting the direction and position of a magnetic vector - Google Patents

Magnetically hard object and method for adjusting the direction and position of a magnetic vector Download PDF

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Publication number
CA2426846A1
CA2426846A1 CA002426846A CA2426846A CA2426846A1 CA 2426846 A1 CA2426846 A1 CA 2426846A1 CA 002426846 A CA002426846 A CA 002426846A CA 2426846 A CA2426846 A CA 2426846A CA 2426846 A1 CA2426846 A1 CA 2426846A1
Authority
CA
Canada
Prior art keywords
hard magnetic
magnetic
moulding
hard
moulded
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.)
Granted
Application number
CA002426846A
Other languages
French (fr)
Other versions
CA2426846C (en
Inventor
Peter Nusser
Conrad Kauffeldt
Werner Neumann
Kurt Graichen
Andreas Arndt
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.)
Berlin Heart GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2426846A1 publication Critical patent/CA2426846A1/en
Application granted granted Critical
Publication of CA2426846C publication Critical patent/CA2426846C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/205—Non-positive displacement blood pumps
    • A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
    • A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
    • A61M60/818—Bearings
    • A61M60/82—Magnetic 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
    • F16C32/0408—Passive magnetic bearings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Veterinary Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The invention relates to a hard magnetic object and a method for adjusting a magnetic vector of a hard magnetic object.

Therefore, the invention has the object, to provide a hard magnetic object and a method for its manufacture, which hard magnetic object has, without being influenced by an outside magnetic circuit, a desired resultant magnetic vector, which is in the frame of a predetermined tolerance range, and furthermore, that the hard magnetic object has a higher maximal energy density compared to the State of Art.

According to the invention a hard magnetic object, which magnetic vector is as far as possible within the frame of a predetermined tolerance range, consists at least of one hard magnetic moulding (1) and at least one further moulded element (11), which are combined with each other in such a way, that by means of shape, bringing together and aligning of the moulding (1) and of the moulded element (11), a predetermined direction and position of the magnetic vector of the hard magnetic object is achieved.
The magnetic vector of the hard magnetic object is the resultant magnetic vector of the magnetic vectors (4, 14) of the hard magnetic moulding (1) and of the moulded elements (11).

Claims (13)

1. ~Hard magnetic object, consisting of individual combined parts, characterised in that at least one hard magnetic moulding (1) and at least one moulded element (11, 21, 31) are combined with each other in such a way, that by shape, bringing together and alignment of the hard magnetic moulding (1) and of the moulded elements (11, 21, 31) a predetermined direction and position of a resultant (20, 20a) of a magnetic vector (4) of the hard magnetic moulding (1) and of the magnetic vectors (14, 24, 34) of the moulded elements (11, 21, 31) are achieved at the predetermined sides.
2. ~Hard magnetic object according to claim 1, characterised in that the moulded elements (11, 21, 31) consist of a ferromagnetic, ferrimagnetic, antiferromagnetic, paramagnetic, superparamagnetic or diamagnetic material.
3. ~Hard magnetic object according to claim 1 or 2, characterised in that that hard magnetic moulding (1) and the moulded elements (11, 21, 31) are rotational symmetrical bodies.
4. ~Hard magnetic object according to claim 1 or 2, characterised in that the hard magnetic moulding (1) and/or the moulded elements (11, 21, 31) are non rotational symmetrical bodies.
5. ~Hard magnetic object according to one of claims 1 to 4, characterised in that the hard magnetic moulding (1) and/or the moulded elements (11, 21, 31) are compact bodies.
6. ~Hard magnetic object according to one of claims 1 to 4, characterised in that the hard magnetic moulding (1) and/or the moulded elements (11, 21, 31) are hollow bodies.
7. Hard magnetic object according to one of claims 1 to 6, characterised in that the hard magnetic moulding (1) and the moulded elements (11, 21, 31) are arranged movable relative to each other and/or fixable.
8. Hard magnetic object according to one of claims 1 to 6, characterised in that the hard magnetic moulding (1) and the moulded elements (11, 21, 31) are fixedly connected to each other.
9. Hard magnetic object according to one of claims 1 to 8, characterised in that the moulded element (11) is formed as a hollow chamber in the hard magnetic moulding (1).
10. Method for adjusting a magnetic vector of a hard magnetic object, characterised in that by means of bringing together and aligning of hard magnetic mouldings (1) and moulded elements (11, 21, 31), an adjustment of the direction and of the position of a resultant magnetic vector (20, 20a) of the hard magnetic moulding (1) and of the magnetic vectors (14, 24, 34) of the moulded elements (11, 21, 31) is produced at the predetermined sides.
11. Method according to claim 10, characterised in that an initial determination of the magnetic vectors (4, 14, 24, 34) of the hard magnetic moulding (1) as well as of the moulded elements (11, 21, 31) is carried out in reference of their direction and position and following, by means of change of shape of the moulded elements (11, 21, 31) in connection with the bringing together and alignment of the moulded elements (11, 21, 31) to the hard magnetic moulding (1), a predetermined direction and position of the resultant magnetic vectors (14, 24, 34) are achieved at the predetermined sides.
12. Method according to claim 10, characterised in that the adjustment of the direction and of the position of the resultant magnetic vector of a hard magnetic object at the predetermined sides is achieved by means of determination and control of the resultant magnetic vector (20) during or after the combination of the hard magnetic object and the repeated purposeful change of the combination in correspondence with the resulting changes of the magnetic vector.
13. Utilisation of the hard magnetic object according to claim 1 as a component of a magnetic bearing.
CA2426846A 2001-08-24 2002-08-26 Magnetically hard object and method for adjusting the direction and position of a magnetic vector Expired - Fee Related CA2426846C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10142934 2001-08-24
DE10142934.7 2001-08-24
PCT/EP2002/009522 WO2003019587A1 (en) 2001-08-24 2002-08-26 Magnetically hard object and method for adjusting the direction and position of a magnetic vector

Publications (2)

Publication Number Publication Date
CA2426846A1 true CA2426846A1 (en) 2003-04-24
CA2426846C CA2426846C (en) 2011-10-04

Family

ID=7697418

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2426846A Expired - Fee Related CA2426846C (en) 2001-08-24 2002-08-26 Magnetically hard object and method for adjusting the direction and position of a magnetic vector

Country Status (9)

Country Link
EP (1) EP1419510B1 (en)
JP (1) JP4271030B2 (en)
CN (1) CN1237550C (en)
AT (1) ATE462190T1 (en)
AU (1) AU2002337022B2 (en)
CA (1) CA2426846C (en)
DE (1) DE10239958B4 (en)
RU (1) RU2299485C2 (en)
WO (1) WO2003019587A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9601251B2 (en) 2012-12-07 2017-03-21 Continental Teves Ag & Co. Ohg Correction of angle errors in permanent magnets

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2483380C2 (en) * 2011-04-07 2013-05-27 Олег Фёдорович Меньших Method of producing permanent magnets
GB2490863B (en) * 2011-05-06 2018-04-18 Edwards Ltd Magnetic bearing assembly
RU2502146C1 (en) * 2012-06-18 2013-12-20 Олег Фёдорович Меньших Method of magnetising ferromagnetic parallelepipeds
DE102014103060B4 (en) * 2014-03-07 2019-01-03 Pfeiffer Vacuum Gmbh Method for balancing a rotor of a vacuum pump or a rotor of a rotary unit for a vacuum pump
EP2930649B1 (en) * 2014-04-09 2016-07-13 MagCam NV Devices and methods for determining a magnetic field
GB201408899D0 (en) 2014-05-20 2014-07-02 Edwards Ltd Magnetic bearing
CN106644626B (en) * 2016-10-14 2019-05-10 西北工业大学 A kind of permanent magnetism enclosed experiment device for crystallization of protein
DE102017219024A1 (en) * 2017-10-25 2019-04-25 Zf Friedrichshafen Ag Magnetic field sensor and method for compensating a magnet
CN112908663A (en) * 2019-11-19 2021-06-04 中核(天津)科技发展有限公司 Method for improving magnetic eccentricity of annular magnet, annular magnet fixed with centering ring and application of annular magnet

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946863C (en) * 1950-05-27 1956-08-09 Deutsche Edelstahlwerke Ag Gripper magnet
BE508816A (en) * 1950-10-20
DE935626C (en) * 1953-09-03 1955-11-24 Heinrich Dipl-Ing Spodig Permanent eye magnet
DE1096795B (en) * 1955-03-07 1961-01-05 Wilhelm Donaubauer Holding device that can be placed on a magnetic clamping plate for processing wedge-shaped workpieces, e.g. V-ledges
GB1471148A (en) * 1973-07-16 1977-04-21 Strawson Hydraulics Ltd Production of permanent magnets
JPS5856401A (en) * 1981-09-30 1983-04-04 Toshiba Corp Production of sintered magnet
US4777464A (en) * 1986-09-27 1988-10-11 Sumitomo Special Metal Co., Ltd. Magnetic field generating device for NMR-CT
CA2141188A1 (en) * 1992-07-27 1994-02-03 Manlio G. Abele High field magnets for medical applications

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9601251B2 (en) 2012-12-07 2017-03-21 Continental Teves Ag & Co. Ohg Correction of angle errors in permanent magnets

Also Published As

Publication number Publication date
JP2004521520A (en) 2004-07-15
EP1419510B1 (en) 2010-03-24
CN1466768A (en) 2004-01-07
RU2299485C2 (en) 2007-05-20
RU2003112205A (en) 2004-11-10
DE10239958A1 (en) 2003-03-13
JP4271030B2 (en) 2009-06-03
CN1237550C (en) 2006-01-18
AU2002337022B2 (en) 2004-10-07
WO2003019587A1 (en) 2003-03-06
EP1419510A1 (en) 2004-05-19
DE10239958B4 (en) 2012-02-16
CA2426846C (en) 2011-10-04
ATE462190T1 (en) 2010-04-15

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Effective date: 20170828