CN109441955A - A kind of magnetic axis holder structure to radiate for radial direction magnetic bearing and thrust magnetic bearing - Google Patents
A kind of magnetic axis holder structure to radiate for radial direction magnetic bearing and thrust magnetic bearing Download PDFInfo
- Publication number
- CN109441955A CN109441955A CN201811548085.1A CN201811548085A CN109441955A CN 109441955 A CN109441955 A CN 109441955A CN 201811548085 A CN201811548085 A CN 201811548085A CN 109441955 A CN109441955 A CN 109441955A
- Authority
- CN
- China
- Prior art keywords
- magnetic bearing
- thrust
- radial direction
- bearing seat
- magnetic
- 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
Links
- 230000017525 heat dissipation Effects 0.000 claims abstract description 10
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000009423 ventilation Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 abstract description 13
- 239000000725 suspension Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
-
- 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
-
- 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
- F16C37/00—Cooling of bearings
- F16C37/005—Cooling of bearings of magnetic bearings
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 magnetic axis holder structures to radiate for radial direction magnetic bearing and thrust magnetic bearing, the internal chamber wall of magnetic bearing seat is equipped with positioning convex platform, and the left side of positioning convex platform is radial direction magnetic bearing positioning surface, right side is thrust magnetic bearing positioning surface, radial direction magnetic bearing is placed in magnetic bearing seat, radial direction magnetic bearing is axially positioned in magnetic bearing seat by radial direction magnetic bearing fixed ring, two thrust magnetic bearings are separated by certain interval in magnetic bearing seat, spacer ring is placed between two thrust magnetic bearings, the thrust magnetic bearing of inside contacts on the thrust magnetic bearing positioning surface of positioning convex platform, thrust magnetic bearing axial is positioned in magnetic bearing seat by thrust magnetic bearing fixed ring, heat dissipation cavity is formed between radial direction magnetic bearing and the thrust magnetic bearing of inside；Several heat release holes are evenly equipped in the circumferencial direction of magnetic bearing seat.The channel cross-sectional area of cooling air is no longer limited by the magnetic circuit limitation of thrust magnetic bearing, can determine size according to actual needs.
Description
Technical field:
The present invention relates to a kind of magnetic axis holder structures to radiate for radial direction magnetic bearing and thrust magnetic bearing.
Background technique:
Magnetic suspension bearing during the work time, although not contacting directly with rotor, avoids frictional dissipation, due to
There are the influences of eddy-current loss and coil resistance for magnetic suspension bearing itself, it is also desirable to consider heat dissipation problem.
In order to facilitate the heat dissipation of magnetic suspension bearing, thrust magnetic bearing common practice is drilled on thrust magnetic bearing,
Uniformly distributed several ventilation holes on circumference, cooling air pass through ventilation hole under the drive of external fan or rotor radiator fan, from
And take away the heat of coil generation.But it has the following disadvantages:
1) vent area is limited, whether the quantity of ventilation hole, the diameter or distribution diameter of a circle in hole, it is necessary to tie
The magnetic structure for closing thrust magnetic bearing, avoids the magnetic saturation of regional area.
2) space inside ventilation hole and thrust magnetic bearing can generate resistance, and this part flow resistance to the flowing of cooling air
Because space is irregular, irregularities can be become, cause difficulty hence for the flow and pressure estimation of cooling air.It is too smart
True calculating can consume plenty of time and computer resource, and estimate it is inaccurate it will cause the cooling capacity of cooling air it is superfluous or
Person is insufficient.
Summary of the invention:
The present invention is provided a kind of for radial direction magnetic bearing and thrust to solve the above-mentioned problems of the prior art
The magnetic axis holder structure of magnetic bearing heat dissipation.
The technical solution adopted in the present invention has: a kind of magnetic bearing seat to radiate for radial direction magnetic bearing and thrust magnetic bearing
Structure, including magnetic bearing seat, radial direction magnetic bearing, radial direction magnetic bearing fixed ring, thrust magnetic bearing, thrust magnetic bearing fixed ring and every
Circle, the internal chamber wall of the magnetic bearing seat is equipped with positioning convex platform, and the left side of positioning convex platform is radial direction magnetic bearing positioning surface, fixed
The right side of position boss is thrust magnetic bearing positioning surface, and radial direction magnetic bearing is placed in magnetic bearing seat, and one end contacts at convex
On the radial direction magnetic bearing positioning surface of platform, radial direction magnetic bearing fixed ring is fixed on magnetic bearing seat and by radial direction magnetic bearing axially position
In in magnetic bearing seat, two thrust magnetic bearings are separated by certain interval in magnetic bearing seat, and spacer ring is placed between two thrust magnetic bearings,
The thrust magnetic bearing of inside contacts on the thrust magnetic bearing positioning surface of positioning convex platform, and thrust magnetic bearing fixed ring is fixed on magnetic axis
It holds on seat and thrust magnetic bearing axial is positioned in magnetic bearing seat, formed between the thrust magnetic bearing of radial direction magnetic bearing and inside
There is heat dissipation cavity；
Several heat release holes are evenly equipped in the circumferencial direction of magnetic bearing seat, which includes orthogonal horizontal part and erect
Straight portion, horizontal part arrange that vertical portion is located at the left side of thrust magnetic bearing positioning surface, and vertical along the axial direction of magnetic bearing seat
Portion connects with heat dissipation cavity.
Further, the thrust magnetic bearing fixed ring is equipped with several ventilation holes, and ventilation hole is connected with horizontal part.
Further, the cross section of the horizontal part is fan shape.
The invention has the following beneficial effects:
1) channel cross-sectional area of cooling air is no longer limited by the magnetic circuit limitation of thrust magnetic bearing, can be according to actual needs
Determine size.
2) channel is close to linear type, and flow resistance is smaller relative to the ventilation hole on thrust magnetic bearing, and radiating efficiency is higher.It can be with
Reduce the requirement for external fan or rotor cooling fan.
Detailed description of the invention:
Fig. 1 is structure of the invention figure.
Fig. 2 is the front sectional view of magnetic bearing seat in the present invention.
Fig. 3 is the left view of magnetic bearing seat in the present invention.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
Such as Fig. 1 to Fig. 3, a kind of magnetic axis holder structure to radiate for radial direction magnetic bearing and thrust magnetic bearing of the present invention, packet
Include magnetic bearing seat 1, radial direction magnetic bearing 2, radial direction magnetic bearing fixed ring 3, thrust magnetic bearing 4, thrust magnetic bearing fixed ring 5 and spacer ring
6, the internal chamber wall of magnetic bearing seat 1 is equipped with positioning convex platform 11, and the left side of positioning convex platform 11 is radial direction magnetic bearing positioning surface, fixed
The right side of position boss 11 is thrust magnetic bearing positioning surface, and radial direction magnetic bearing 2 is placed in magnetic bearing seat 1, and one end contacts at and determines
On the radial direction magnetic bearing positioning surface of position boss 11, radial direction magnetic bearing fixed ring 3 is fixed on magnetic bearing seat 1 and by radial direction magnetic bearing
2 are axially positioned in magnetic bearing seat 1.Two thrust magnetic bearings 4 are separated by certain interval in magnetic bearing seat 1, and spacer ring 6 is placed in two and pushes away
Between power magnetic bearing 4, the thrust magnetic bearing 4 of inside is contacted on the thrust magnetic bearing positioning surface of positioning convex platform 11, thrust magnetic axis
Fixed ring 5 is held to be fixed on magnetic bearing seat 1 and thrust magnetic bearing 4 is axially positioned in magnetic bearing seat 1.Radial direction magnetic bearing 2 with
Heat dissipation cavity 10 is formed between the thrust magnetic bearing 4 of inside.
Several heat release holes 8 are evenly equipped in the circumferencial direction of magnetic bearing seat 1, which includes orthogonal horizontal part
82 and vertical portion 83, the cross section of horizontal part 82 is fan shape, and arranges along the axial direction of magnetic bearing seat 1, vertical portion 83
Positioned at the left side of thrust magnetic bearing positioning surface, and vertical portion 83 connects with heat dissipation cavity 10.
Several ventilation holes 51 are equipped in thrust magnetic bearing fixed ring 5, ventilation hole 51 is connected with horizontal part 82.
The present invention improves thrust magnetic bearing radiating condition, improves the cooling of cooling air by changing magnetic axis holder structure
Efficiency.It slots in the thrust magnetic bearing radial mating surface of magnetic bearing seat, and axial depth of slotting is more than thrust magnetic bearing
Positioning table terrace, using fluting space as the channel of cooling air.Meanwhile it being processed in thrust magnetic bearing fixed ring corresponding logical
Air holes.Because radial mating surface is processed into intermittent circle without radial direction magnetic bearing height by the radial positioning of thrust magnetic bearing
Cylinder is can be received.Following benefit can be brought by doing so:
1) channel cross-sectional area of cooling air is no longer limited by the magnetic circuit limitation of thrust magnetic bearing, can be according to actual needs
Determine size.
2) channel is close to linear type, and flow resistance is smaller relative to the ventilation hole on thrust magnetic bearing, and radiating efficiency is higher.It can be with
Reduce the requirement for external fan or rotor cooling fan.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (3)
1. a kind of magnetic axis holder structure to radiate for radial direction magnetic bearing and thrust magnetic bearing, it is characterised in that: including magnetic bearing
Seat (1), radial direction magnetic bearing (2), radial direction magnetic bearing fixed ring (3), thrust magnetic bearing (4), thrust magnetic bearing fixed ring (5) and every
It encloses (6), the internal chamber wall of the magnetic bearing seat (1) is equipped with positioning convex platform (11), and the left side of positioning convex platform (11) is radial
The right side of magnetic bearing positioning surface, positioning convex platform (11) is thrust magnetic bearing positioning surface, and radial direction magnetic bearing (2) is placed in magnetic bearing seat
(1) in, and one end contacts on the radial direction magnetic bearing positioning surface of positioning convex platform (11), and radial direction magnetic bearing fixed ring (3) is fixed on
It is axially positioned in magnetic bearing seat (1) on magnetic bearing seat (1) and by radial direction magnetic bearing (2), two thrust magnetic bearings (4) are separated by centainly
Gap is set in magnetic bearing seat (1), and spacer ring (6) is placed between two thrust magnetic bearings (4), and the thrust magnetic bearing (4) of inside contradicts
In on the thrust magnetic bearing positioning surface of positioning convex platform (11), thrust magnetic bearing fixed ring (5) is fixed on magnetic bearing seat (1) and will
Thrust magnetic bearing (4) is axially positioned in magnetic bearing seat (1), shape between the thrust magnetic bearing (4) of radial direction magnetic bearing (2) and inside
At there is heat dissipation cavity (10)；
Several heat release holes (8) are evenly equipped in the circumferencial direction of magnetic bearing seat (1), which includes orthogonal level
Portion (82) and vertical portion (83), horizontal part (82) arrange that vertical portion (83) are located at thrust along the axial direction of magnetic bearing seat (1)
The left side of magnetic bearing positioning surface, and vertical portion (83) connect with heat dissipation cavity (10).
2. the magnetic axis holder structure to radiate as described in claim 1 for radial direction magnetic bearing and thrust magnetic bearing, feature exist
In: the thrust magnetic bearing fixed ring (5) is equipped with several ventilation holes (51), and ventilation hole (51) is connected with horizontal part (82).
3. the magnetic axis holder structure to radiate as described in claim 1 for radial direction magnetic bearing and thrust magnetic bearing, feature exist
In: the cross section of the horizontal part (82) is fan shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548085.1A CN109441955B (en) | 2018-12-18 | 2018-12-18 | Magnetic bearing seat structure for radiating radial magnetic bearing and thrust magnetic bearing |
| PCT/CN2019/107455 WO2020125115A1 (en) | 2018-12-18 | 2019-09-24 | Magnetic bearing seat structure for heat dissipation of radial magnetic bearing and thrust magnetic bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548085.1A CN109441955B (en) | 2018-12-18 | 2018-12-18 | Magnetic bearing seat structure for radiating radial magnetic bearing and thrust magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441955A true CN109441955A (en) | 2019-03-08 |
| CN109441955B CN109441955B (en) | 2024-03-19 |
Family
ID=65559269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811548085.1A Active CN109441955B (en) | 2018-12-18 | 2018-12-18 | Magnetic bearing seat structure for radiating radial magnetic bearing and thrust magnetic bearing |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109441955B (en) |
| WO (1) | WO2020125115A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848253A (en) * | 2019-11-11 | 2020-02-28 | 北京航空航天大学 | Three-degree-of-freedom radial-axial integrated hybrid magnetic bearing |
| WO2020125115A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Magnetic bearing seat structure for heat dissipation of radial magnetic bearing and thrust magnetic bearings |
| WO2024119833A1 (en) * | 2022-12-07 | 2024-06-13 | 珠海格力电器股份有限公司 | Magnetic bearing and magnetic bearing system |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0429614A (en) * | 1990-05-23 | 1992-01-31 | Matsushita Electric Ind Co Ltd | Magnetic bearing device |
| JPH0861366A (en) * | 1994-08-25 | 1996-03-08 | Koyo Seiko Co Ltd | Magnetic bearing device |
| EP0961044A2 (en) * | 1998-05-27 | 1999-12-01 | Seiko Seiki Kabushiki Kaisha | Magnetic bearing |
| US6057619A (en) * | 1998-12-22 | 2000-05-02 | Sundstrand Corporation | Stress relief in a magnetic thrust bearing |
| US20040088976A1 (en) * | 2002-08-20 | 2004-05-13 | Jens-Wolf Jaisle | Turbocharger with air-cooled magnetic bearing system |
| US20060175920A1 (en) * | 2002-07-12 | 2006-08-10 | Mitsubishi Denki Kabushiki Kaisha | Magnetic bearing spindle |
| CN103095048A (en) * | 2011-10-31 | 2013-05-08 | 株式会社安川电机 | Electrical rotating machine |
| CN104823363A (en) * | 2012-11-26 | 2015-08-05 | 株式会社明电舍 | Lubricating oil passage structure for bearing |
| CN105658977A (en) * | 2013-05-29 | 2016-06-08 | 诺沃皮尼奥内股份有限公司 | Magnetic bearing assembly having inner ventilation |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN107076211A (en) * | 2014-06-27 | 2017-08-18 | 热力学公司 | Cooling system for magnetic force cod |
| CN207573188U (en) * | 2017-12-04 | 2018-07-03 | 南京磁谷科技有限公司 | A kind of compressor cooling structure |
| CN108351031A (en) * | 2015-11-11 | 2018-07-31 | 日本伊格尔博格曼有限公司 | Magnetic fluid seal |
| CN209430619U (en) * | 2018-12-18 | 2019-09-24 | 南京磁谷科技有限公司 | A kind of magnetic axis holder structure to radiate for radial direction magnetic bearing and thrust magnetic bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441955B (en) * | 2018-12-18 | 2024-03-19 | 南京磁谷科技有限公司 | Magnetic bearing seat structure for radiating radial magnetic bearing and thrust magnetic bearing |
-
2018
- 2018-12-18 CN CN201811548085.1A patent/CN109441955B/en active Active
-
2019
- 2019-09-24 WO PCT/CN2019/107455 patent/WO2020125115A1/en active Application Filing
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0429614A (en) * | 1990-05-23 | 1992-01-31 | Matsushita Electric Ind Co Ltd | Magnetic bearing device |
| JPH0861366A (en) * | 1994-08-25 | 1996-03-08 | Koyo Seiko Co Ltd | Magnetic bearing device |
| EP0961044A2 (en) * | 1998-05-27 | 1999-12-01 | Seiko Seiki Kabushiki Kaisha | Magnetic bearing |
| US6057619A (en) * | 1998-12-22 | 2000-05-02 | Sundstrand Corporation | Stress relief in a magnetic thrust bearing |
| US20060175920A1 (en) * | 2002-07-12 | 2006-08-10 | Mitsubishi Denki Kabushiki Kaisha | Magnetic bearing spindle |
| US20040088976A1 (en) * | 2002-08-20 | 2004-05-13 | Jens-Wolf Jaisle | Turbocharger with air-cooled magnetic bearing system |
| CN103095048A (en) * | 2011-10-31 | 2013-05-08 | 株式会社安川电机 | Electrical rotating machine |
| CN104823363A (en) * | 2012-11-26 | 2015-08-05 | 株式会社明电舍 | Lubricating oil passage structure for bearing |
| CN105658977A (en) * | 2013-05-29 | 2016-06-08 | 诺沃皮尼奥内股份有限公司 | Magnetic bearing assembly having inner ventilation |
| CN107076211A (en) * | 2014-06-27 | 2017-08-18 | 热力学公司 | Cooling system for magnetic force cod |
| CN108351031A (en) * | 2015-11-11 | 2018-07-31 | 日本伊格尔博格曼有限公司 | Magnetic fluid seal |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN207573188U (en) * | 2017-12-04 | 2018-07-03 | 南京磁谷科技有限公司 | A kind of compressor cooling structure |
| CN209430619U (en) * | 2018-12-18 | 2019-09-24 | 南京磁谷科技有限公司 | A kind of magnetic axis holder structure to radiate for radial direction magnetic bearing and thrust magnetic bearing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125115A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Magnetic bearing seat structure for heat dissipation of radial magnetic bearing and thrust magnetic bearings |
| CN110848253A (en) * | 2019-11-11 | 2020-02-28 | 北京航空航天大学 | Three-degree-of-freedom radial-axial integrated hybrid magnetic bearing |
| WO2024119833A1 (en) * | 2022-12-07 | 2024-06-13 | 珠海格力电器股份有限公司 | Magnetic bearing and magnetic bearing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109441955B (en) | 2024-03-19 |
| WO2020125115A1 (en) | 2020-06-25 |
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Address after: 211102 No. 100 Jiuzhu Road, Jiangning Development Zone, Nanjing, Jiangsu Province Patentee after: Nanjing Cigu Technology Co.,Ltd. Country or region after: Zhong Guo Address before: 211102 No. 100 Jiuzhu Road, Jiangning Development Zone, Nanjing, Jiangsu Province Patentee before: NANJING CIGU Ltd.,Corp. Country or region before: Zhong Guo |