CN107327484A - A kind of thrust magnetic bearing box-like field structure - Google Patents
A kind of thrust magnetic bearing box-like field structure Download PDFInfo
- Publication number
- CN107327484A CN107327484A CN201710755142.2A CN201710755142A CN107327484A CN 107327484 A CN107327484 A CN 107327484A CN 201710755142 A CN201710755142 A CN 201710755142A CN 107327484 A CN107327484 A CN 107327484A
- Authority
- CN
- China
- Prior art keywords
- iron core
- backboard
- mounting groove
- rotor
- circular mounting
- 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
Links
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
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
-
- 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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/30—Electric properties; Magnetic properties
- F16C2202/40—Magnetic
- F16C2202/42—Magnetic soft-magnetic, ferromagnetic
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of thrust magnetic bearing box-like field structure, including iron core and by copper cash around the magnet exciting coil being set as, the iron core includes iron core backboard and iron core web, the circle centre position of the iron core backboard is provided with axis hole, circular mounting groove is provided with iron core backboard, circular mounting groove is coaxially disposed with axis hole, the outer wall of the circular mounting groove is provided with positioning table terrace, the copper cash of magnet exciting coil is set around in circular mounting groove, iron core web is fixed on iron core backboard, and the outer circle wall of iron core web is positioned on positioning table terrace.Present invention reduces thrust disc quality, the maximum speed of rotor is improved；Rotor axial length is shortened, the maximum speed of rotor is improved；Have the advantages that it is low vortex, it is simple and reliable for structure, easy to assembly.
Description
Technical field：
The present invention relates to a kind of thrust magnetic bearing box-like field structure.
Background technology：
Coaxial annular field structure is a kind of low vortex, thrust magnetic bearing magnetic pole knot simple and reliable for structure, easy to assembly
Structure is (in such as Fig. 1, figure：1st, iron core；2nd, magnet exciting coil；400th, rotor；800th, thrust disc), the thrust magnetic bearing of this kind of structure for
High speed rotor has the disadvantage that：
1) thrust dish external diameter is big, quality is big, can reduce rotor maximum speed；As shown in Fig. 2 the magnetic in coaxial annular magnetic pole
Clearance between poles 100 are equal to the radial width of magnet exciting coil 2.Therefore when the timing of wire total sectional area one, the magnetic pole of coaxial annular magnetic pole
Gap is necessarily than larger, i.e. the annular magnetic pole radius ratio in outside is larger.Because annular magnetic pole is needed with thrust side surface with certain
Gap is relative to work, therefore uses the thrust dish external diameter and quality of the thrust magnetic bearing of coaxial annular magnetic pole all to compare
Greatly.Because thrust disc 800 is a heavier part on rotor, therefore the raising of thrust disc quality can cause rotor 400 intrinsic
Frequency declines, and then causes the reduction of rotor maximum speed.
2) axial length of thrust magnetic bearing electromagnet is big, can reduce rotor maximum speed；Such as Fig. 2, coaxial annular magnetic pole
The axial length of middle electromagnet is more than the axial height of magnet exciting coil 2 and the sum of the thickness of iron core 1.Therefore when wire total sectional area one
Regularly, the axial length of coaxial annular magnetic pole is also than larger.And the axial width of its magnet exciting coil 2 and radial width are into anti-
Than even wanting to reduce thrust disc quality by reducing magnetic pole gap, the axial length of magnetic pole will be greatly increased, and then make rotor
Length increase.Because rotor length increase can reduce rotor bow rigidity, therefore the increase of rotor length also results in rotor
Intrinsic frequency declines, and then causes the reduction of rotor maximum speed.
The content of the invention：
The present invention is to provide a kind of thrust magnetic bearing box-like magnetic pole knot to solve the problem of above-mentioned prior art is present
Structure.
The technical solution adopted in the present invention has：A kind of thrust magnetic bearing box-like field structure, including iron core and by copper cash
Around the magnet exciting coil being set as, the iron core includes iron core backboard and iron core web, and the circle centre position of the iron core backboard is provided with axis hole,
Circular mounting groove is provided with iron core backboard, circular mounting groove is coaxially disposed with axis hole, set on the outer wall of the circular mounting groove
There is positioning table terrace, the copper cash of magnet exciting coil is set around in circular mounting groove, and iron core web is fixed on iron core backboard, and iron core
The outer circle wall of web is positioned on positioning table terrace.
Further, it is fixedly connected between the iron core web and iron core backboard by screw.
Further, the iron core backboard and iron core web are made by soft magnetic materials.
The present invention has the advantages that：
1) thrust disc quality is reduced, the maximum speed of rotor is improved；
2) rotor axial length is shortened, the maximum speed of rotor is improved；
3) have the advantages that it is low vortex, it is simple and reliable for structure, easy to assembly.
Brief description of the drawings：
Fig. 1 is structure chart of the coaxial annular field structure on rotor in the prior art.
Fig. 2 is the structure chart of coaxial annular field structure in the prior art.
Fig. 3 is the structure chart of thrust magnetic bearing box-like field structure of the present invention.
Fig. 4 is the structure chart of iron core backboard in the present invention.
Fig. 5 is the schematic diagram of magnetic pole gap in the present invention.
Fig. 6 is structure chart of the field structure of the present invention on rotor.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figures 3 to 6, the present invention discloses a kind of thrust magnetic bearing box-like field structure, including iron core 1 and by copper cash
Around the magnet exciting coil 2 being set as, magnet exciting coil 2 is in iron core 1.
Iron core 1 includes iron core backboard 11 and iron core web 12, axis hole 110 is provided with the circle centre position of iron core backboard 11, in iron
Core backboard 11 is provided with circular mounting groove 111, and circular mounting groove 111 is coaxially disposed with axis hole 110.Outside circular mounting groove 111
Wall is provided with positioning table terrace 112, and the copper cash of magnet exciting coil 2 is set around in circular mounting groove 111, and iron core web 12 passes through screw
It is fixed on iron core backboard 11, and the outer circle wall of iron core web 12 is positioned on positioning table terrace 112.
Iron core backboard 11 and iron core web 12 are made by soft magnetic materials.
Advantage of the present invention is：
1) mass of thrust disc 800 is reduced, the maximum speed of rotor 400 is improved；Thrust magnetic bearing box-like field structure
In, magnetic pole gap 100 is no longer influenced by the limitation of the radial width of magnet exciting coil 2, therefore magnetic pole gap can be made smaller, thus pushes away
Power dish external diameter reduces, quality reduction.Because thrust disc is a heavier part on rotor, therefore the reduction energy of thrust disc quality
Rotor intrinsic frequency is enough improved, and then improves rotor maximum speed.
2) rotor axial length is shortened, the maximum speed of rotor is improved；In thrust magnetic bearing box-like field structure, magnetic
Clearance between poles 100 are no longer influenced by the limitation of magnet exciting coil radial width, therefore magnet exciting coil can be made very wide very thin, thus thrust magnetic
Bearing axial direction contraction in length, rotor length also shortens therewith.Because rotor length is to influence the key factor of rotor bow rigidity,
Therefore rotor intrinsic frequency can be improved by shortening rotor length, and then improve rotor maximum speed.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (3)
1. a kind of thrust magnetic bearing box-like field structure, including iron core (1) and by copper cash around the magnet exciting coil (2) being set as, it is special
Levy and be：The iron core (1) includes iron core backboard (11) and iron core web (12), and the circle centre position of the iron core backboard (11) is provided with
Axis hole (110), is provided with circular mounting groove (111), circular mounting groove (111) and axis hole (110) are coaxial on iron core backboard (11)
Set, the outer wall of the circular mounting groove (111) is provided with positioning table terrace (112), and the copper cash of magnet exciting coil (2) is set around circle
In shape mounting groove (111), iron core web (12) is fixed on iron core backboard (11), and the outer circle wall positioning of iron core web (12)
In on positioning table terrace (112).
2. thrust magnetic bearing box-like field structure as claimed in claim 1, it is characterised in that：The iron core web (12) and iron
Core backboard is fixedly connected between (11) by screw.
3. thrust magnetic bearing box-like field structure as claimed in claim 1, it is characterised in that：The iron core backboard (11) and iron
Core web (12) is made by soft magnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755142.2A CN107327484A (en) | 2017-08-29 | 2017-08-29 | A kind of thrust magnetic bearing box-like field structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755142.2A CN107327484A (en) | 2017-08-29 | 2017-08-29 | A kind of thrust magnetic bearing box-like field structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107327484A true CN107327484A (en) | 2017-11-07 |
Family
ID=60204672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710755142.2A Pending CN107327484A (en) | 2017-08-29 | 2017-08-29 | A kind of thrust magnetic bearing box-like field structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107327484A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0467148A1 (en) * | 1990-07-16 | 1992-01-22 | Balzers-Pfeiffer GmbH | Venting device for fast rotating vacuum pumps |
| JPH04209995A (en) * | 1990-11-30 | 1992-07-31 | Daikin Ind Ltd | Construction of low vacuum pump bearing |
| JPH0562735U (en) * | 1992-01-31 | 1993-08-20 | 光洋精工株式会社 | Bearing device |
| JPH116774A (en) * | 1997-04-25 | 1999-01-12 | Daikin Ind Ltd | Device and method for detecting temperature of rotor |
| JP2000213539A (en) * | 1999-01-26 | 2000-08-02 | Shimadzu Corp | Magnetic bearing device |
| JP2000257586A (en) * | 1999-03-08 | 2000-09-19 | Koyo Seiko Co Ltd | Turbo molecular pump |
| JP2000283088A (en) * | 1999-03-30 | 2000-10-10 | Shimadzu Corp | Turbo-molecule pump |
| JP2000283158A (en) * | 1999-01-28 | 2000-10-13 | Nsk Ltd | Radial magnetic bearing |
| US6422837B1 (en) * | 1999-03-29 | 2002-07-23 | Seiko Instruments Inc. | Magnetic bearing protection device |
| JP2003293980A (en) * | 2002-04-01 | 2003-10-15 | Shimadzu Corp | Magnetic bearing type turbo molecular pump |
| US20070024138A1 (en) * | 2003-09-17 | 2007-02-01 | Mecos Traxler Ag | Magnetic bearing device and vacuum pump |
| CN104736800A (en) * | 2012-09-20 | 2015-06-24 | 诺沃皮尼奥内股份有限公司 | Magnetic thrust bearing, turbo machine and method |
| CN207111709U (en) * | 2017-08-29 | 2018-03-16 | 南京磁谷科技有限公司 | A kind of thrust magnetic bearing box-like field structure |
-
2017
- 2017-08-29 CN CN201710755142.2A patent/CN107327484A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0467148A1 (en) * | 1990-07-16 | 1992-01-22 | Balzers-Pfeiffer GmbH | Venting device for fast rotating vacuum pumps |
| JPH04209995A (en) * | 1990-11-30 | 1992-07-31 | Daikin Ind Ltd | Construction of low vacuum pump bearing |
| JPH0562735U (en) * | 1992-01-31 | 1993-08-20 | 光洋精工株式会社 | Bearing device |
| JPH116774A (en) * | 1997-04-25 | 1999-01-12 | Daikin Ind Ltd | Device and method for detecting temperature of rotor |
| JP2000213539A (en) * | 1999-01-26 | 2000-08-02 | Shimadzu Corp | Magnetic bearing device |
| JP2000283158A (en) * | 1999-01-28 | 2000-10-13 | Nsk Ltd | Radial magnetic bearing |
| JP2000257586A (en) * | 1999-03-08 | 2000-09-19 | Koyo Seiko Co Ltd | Turbo molecular pump |
| US6422837B1 (en) * | 1999-03-29 | 2002-07-23 | Seiko Instruments Inc. | Magnetic bearing protection device |
| JP2000283088A (en) * | 1999-03-30 | 2000-10-10 | Shimadzu Corp | Turbo-molecule pump |
| JP2003293980A (en) * | 2002-04-01 | 2003-10-15 | Shimadzu Corp | Magnetic bearing type turbo molecular pump |
| US20070024138A1 (en) * | 2003-09-17 | 2007-02-01 | Mecos Traxler Ag | Magnetic bearing device and vacuum pump |
| CN104736800A (en) * | 2012-09-20 | 2015-06-24 | 诺沃皮尼奥内股份有限公司 | Magnetic thrust bearing, turbo machine and method |
| CN207111709U (en) * | 2017-08-29 | 2018-03-16 | 南京磁谷科技有限公司 | A kind of thrust magnetic bearing box-like field structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100487257C (en) | Permanent-magnetic biased axial magnetic bearing | |
| EP2850328B1 (en) | Magnetic bearing and method for mounting a ferromagnetic structure around the core of a magnetic bearing | |
| CN108716480B (en) | A kind of magnetic suspension structure and blower | |
| CN102387451A (en) | Split magnet loudspeaker | |
| CN105090245A (en) | Asymmetric permanent-magnet bias axial magnetic bearing | |
| CN102072249B (en) | Large-bearing-capacity radial magnetic bearing | |
| CN102392852B (en) | Axial magnetic bearing | |
| CN104632890A (en) | FDOF (four degrees of freedom) radial magnetic bearing with damping coil integrated structure | |
| CN110729873A (en) | Air gap field adjustable hybrid excitation magnetic lead screw | |
| CN207111709U (en) | A kind of thrust magnetic bearing box-like field structure | |
| US20150076959A1 (en) | Method of producing a rotor of an electric machine and rotor of an electric machine | |
| CN103939465B (en) | A kind of Simple Freedom Magnetic Bearing | |
| CN107327484A (en) | A kind of thrust magnetic bearing box-like field structure | |
| CN204664156U (en) | Permanent magnet biased axial magnetic suspension bearing and centrifugal compressor | |
| WO2024078084A1 (en) | Magnetic suspension active three-degree-of-freedom bearing, motor, and compressor | |
| CN102537048A (en) | Axial magnetic bearing capable of controlling radial twisting | |
| JPH0357700B2 (en) | ||
| WO2007123152A1 (en) | Solenoid | |
| CN102185461A (en) | Composite double-coil motor with axial and radial magnets | |
| CN108869545A (en) | A kind of axial-radial sextupole hybrid magnetic bearing of inverter-driven | |
| CN207470616U (en) | A kind of not uniform thickness thrust magnetic axis bearing structure | |
| CN107387560A (en) | A kind of not uniform thickness thrust magnetic axis bearing structure | |
| CN107387562A (en) | A kind of coaxial electromagnet structure of thrust magnetic bearing | |
| CN113090654A (en) | Permanent magnet biased axial magnetic bearing and use method thereof | |
| CN206738392U (en) | A kind of permanent magnet expulsive force type radial direction magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171107 |
|
| WD01 | Invention patent application deemed withdrawn after publication |