CN101338789A - Magnetic suspension bearing and heat radiation fan adopting same - Google Patents
Magnetic suspension bearing and heat radiation fan adopting same Download PDFInfo
- Publication number
- CN101338789A CN101338789A CNA2007100763879A CN200710076387A CN101338789A CN 101338789 A CN101338789 A CN 101338789A CN A2007100763879 A CNA2007100763879 A CN A2007100763879A CN 200710076387 A CN200710076387 A CN 200710076387A CN 101338789 A CN101338789 A CN 101338789A
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- CN
- China
- Prior art keywords
- bearing
- inner sleeve
- axle
- bearing inner
- outside
- 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
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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
- F16C39/00—Relieving load on bearings
- F16C39/06—Relieving load on bearings using magnetic means
- F16C39/063—Permanent magnets
- F16C39/066—Permanent magnets with opposing permanent magnets repelling each other
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- 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
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- 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
- F16C2360/00—Engines or pumps
- F16C2360/46—Fans, e.g. ventilators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to a magnetic suspension bearing, which comprises a pair of bearing housings, a bearing lining and a shaft; wherein, the bearing housings are symmetrically arranged on both ends of the bearing lining and have a certain interval with the bearing lining; the shaft is firmly inserted in the bearing lining; both the bearing lining and the bearing housings are made of magnetic material, and the magnetic poles of the corresponding surfaces of the bearing lining and the bearing housings are the same. The present invention also provides a radiator fan adopting the magnetic suspension bearing. The magnetic suspension bearing utilizes the magnetic force principle to realize the relative rotation without mechanical friction between the shaft and the bearing housings, therefore the service life of the structure of the bearing is greatly prolonged, moreover, the structure of the magnetic suspension bearing is simple, the bearing lining and the shaft are fixed together, and the magnetic suspension bearing can achieve the functions of other bearings with a complex structure and a large variety of elements only by adopting the magnetic bearing housings and the magnetic being lining.
Description
Technical field
The present invention relates to a kind of bearing, refer to a kind of magnetic suspension bearing especially and adopt the radiation fan of this magnetic suspension bearing.
Background technique
At present, bearing is widely used in the various device, and as fields such as hard disk drive, Digital video disc machine, mini disc machine, CD-Magnetic Optical and radiation fans, the bearing size of motor is little in these devices, to the rotating accuracy and the life requirements height of bearing.Thereby bearing becomes the key of these device operations, and its performance directly influences the runnability and the working efficiency of whole device.
Present widely used bearing comprises several classes such as ball bearing and oil-impregnated bearing.In these several class bearings, all can't avoid the problem of mechanical friction.The most direct consequence that mechanical friction brought promptly is that bearing life shortens, and causes whole device not run well after the bearing failure.In order to solve friction problem, people have done many trials, as the face of reducing friction, adopt lubricant oil or the like, though these measures have reduced the mechanical friction of bearing to a certain extent, but can not tackle the problem at its root, reason is that its these measures of adopting all are to have Mechanical Contact based on bearing.
Also there is the bearing that manufactures and designs with the on-mechanical way of contact to occur in recent years, i.e. magnetic suspension bearing.Magnetic suspension bearing utilizes the different suction mutually of magnetic magnetic pole, and the identical principle of repelling each other of magnetic pole makes bearing and axle realize the relative running of on-mechanical contact, thereby reaches the problem of eliminating mechanical friction.But the appurtenances of present magnetic suspension bearing are more, all need on bearing, to add fulcrum or power up magnetic control equipment, and its complex structure, and cost is higher, is unfavorable for the utilization on the industry, thereby have the very big space of improving.
Summary of the invention
In view of this, be necessary to provide a kind of and can eliminate the radiation fan that mechanical friction has the magnetic suspension bearing of the simple structure that is suitable for again and adopts this magnetic suspension bearing.
A kind of magnetic suspension bearing, comprise pair of bearings overcoat, bearing inner sleeve and axle, this is symmetrically placed in the two ends of bearing inner sleeve and keeps a determining deviation with bearing inner sleeve bearing outside, axle wears and is fixed in the bearing inner sleeve, this bearing inner sleeve and this are made by magnetic material bearing outside, and bearing inner sleeve is identical with the obverse magnetic pole of bearing outside.
A kind of radiation fan, comprise fan frame, magnetic suspension bearing, stator component, rotor component, magnetic suspension bearing comprises bearing inner sleeve and is symmetrically placed in the bearing inner sleeve two ends and keeps the pair of bearings overcoat of a determining deviation with bearing inner sleeve, rotor component comprises one, axle plugs and is fixed in the bearing inner sleeve, bearing inner sleeve and bearing outside are made by magnetic material, and bearing inner sleeve is identical with the obverse magnetic pole of bearing outside.
The magnetive attraction principle of utilizing above-mentioned magnetic suspension bearing realizes that axle and bearing outside do not have relatively rotating of machinery friction, improved the working life of bearing structure greatly, and it is simple in structure, bearing inner sleeve and axle are solid-located, only magnetic bearing outside of apparatus and bearing inner sleeve just can reach other complex structures, the function of the bearing that element is various.
Description of drawings
Fig. 1 is the schematic perspective view of magnetic suspension bearing in the preferred embodiment of the present invention.
Fig. 2 shows schematic representation for cuing open of Fig. 1.
Fig. 3 shows schematic representation for cuing open of another embodiment.
Fig. 4 shows schematic representation for the cuing open of radiation fan of adopting magnetic suspension bearing.
Embodiment
With reference to the accompanying drawings, be described further in conjunction with the embodiments.
Please consult Fig. 1 and Fig. 2 simultaneously, this magnetic suspension bearing mainly comprises pair of bearings overcoat 10, a bearing inner sleeve 20 and one 30.
Bearing outside 10 and bearing inner sleeve 20 are made by magnetic material.Bearing outside 10 integral body are in the shape of a hemispheroid, its inner hole 13 that forms a hemisphere shape, the hole 13 and the bearing outside 10 same centre ofs sphere.Bearing outside 10 also forms a through hole 11 in its hemisphere center of top, and this through hole 11 is connected with hole 13, and through hole 11 is total to central shaft with bearing outside 10.
The intermediate portion of bearing inner sleeve 20 is cylindrical shape, and two end portions is the hemisphere shape, and the both ends of the surface of bearing inner sleeve 20 form hemisphere face, and the cylindrical outer surface of hemisphere face and intermediate portion is tangent.Be formed centrally axis hole (not label) in the bearing inner sleeve 20, for axle 30 wear by, and axle 30 two ends expose to outside the two ends of bearing inner sleeve 20.Axle 30 is fixed together with bearing inner sleeve 20 and forms an integral body, its fixing mode has multiple, as can bearing inner sleeve 20 being shaped on the axle 30 when the moulding bearing inner sleeve 20, also can behind independent moulding bearing inner sleeve 20, axle 30 be inserted in the axis hole internal fixation of bearing inner sleeve 20.The hemisphere face diameter at the two ends of bearing inner sleeve 20 is less than the diameter in the hole 13 of bearing outside 10, thereby the two ends of bearing inner sleeve 20 can be placed in the hole 13 of bearing outside 10 and keep being separated, the diameter of while axle 30 is less than the diameter of the through hole 11 of bearing outside 10, thereby two ends of axle 30 can expose to outside the bearing outside 10 by through hole 11.
Bearing outside 10 is separately fixed at the two ends of bearing inner sleeve 20, and the hemisphere at the two ends of bearing inner sleeve 20 is contained in the hole 13 of bearing outside 10 and keeps a determining deviation with the internal surface of its bearing outside 10.The two ends of axle 30 also have certain interval by the through hole 11 of bearing outside 10 between axle 30 and the through hole 11.Two ends of axle 30 are loaded with load (figure does not show), and axle 30 rotates relative to bearing outside 10 together with bearing inner sleeve 20 during work.
Be the working principle that example illustrates this magnetic suspension bearing below with Fig. 2.The magnetic pole of supposing bearing outside 10 and bearing inner sleeve 20 as shown in Figure 2, and the magnetic intensity everywhere of bearing outside 10 and bearing inner sleeve 20 equates that all the magnetic force size that it is subjected to mutually only changes with the gap between them.The top of bearing inner sleeve 20 is the S utmost point, the bottom is the N utmost point, bearing outside 10 its internal surfaces that are positioned at the top of bearing inner sleeve 20 are the S utmost point, outer surface is the N utmost point, bearing outside 10 its internal surfaces that are positioned at the bottom of bearing inner sleeve 20 are the N utmost point, outer surface is the S utmost point, also is that the magnetic pole with the internal surface of its corresponding bearing outside 10 is identical respectively for the magnetic pole at two ends of bearing inner sleeve 20.
According to the principle that magnetic pole identically repels each other, phase out-phase is inhaled, the both ends of the surface of bearing inner sleeve 20 all are subjected to the repulsive force of bearing outside 10, the centre of sphere at the two ends of the hemisphere face quadrature at the two ends of the direction of these power and bearing inner sleeve 20 and sensing bearing inner sleeve 20.For the ease of the force analysis of bearing inner sleeve 20, these power are resolved into radially and two component in axial direction.Because bearing inner sleeve 20 and bearing outside 10 all are symmetric structures, when bearing inner sleeve 20 is stressed when reaching balance, bearing inner sleeve 20 can place the center in the hole 13 in the bearing outside 10, the centre of sphere that also is bearing outside 10 is on the central axis of bearing inner sleeve 20, the repulsion component radially of all directions that are subjected to of bearing inner sleeve 20 all equated and pointed to the axle center of bearing inner sleeve 20 this moment, thereby each repels component and cancels each other and make bearing inner sleeve 20 reach balance.Showing as bearing inner sleeve 20 in Fig. 2 all equates with the radial clearance of bearing outside 10, and in the axial direction, the axial spacing d1 of the internal surface of the bearing outside 10 that the top of bearing inner sleeve 20 is corresponding with it also equates with the axial spacing d2 of the internal surface of its corresponding bearing outside 10 with the bottom of bearing inner sleeve 20.
Above-mentioned state when being in balance for magnetic suspension bearing, when magnetic suspension bearing can be subjected to the influence of external force and then influence its balance in operation process, following surface analysis its by the conversion process of nonequilibrium state to equilibrium state.Suppose that axle 30 is subjected to downward axial force Pn, bearing inner sleeve 20 is damaged with the equilibrium state of axle 30, and then axially move down, make that d1 increases, d2 reduces, therefore the top of the bearing inner sleeve 20 axial repulsive force that is subjected to its corresponding bearing outside 10 reduces, the axial repulsive force that the bottom is subjected to its corresponding bearing outside 10 increases, and the magnetic force that bearing inner sleeve 20 is subjected to makes a concerted effort to increase and direction is axially upwards.When d1 increase, when d2 is reduced to a certain degree, the increment that magnetic force is made a concerted effort can with axial force Pn equal and opposite in direction, this moment the bearing inner sleeve 20 stressed balances that reach again.When same axle 30 is subjected to the footpath outward force, thereby the spacing between bearing inner sleeve 20 and the bearing outside 10 also can change and can reach stress balance again, and its principle and above-mentioned similar when being subjected to axial force does not repeat them here.
Be illustrated in figure 3 as another embodiment of the present invention.This magnetic suspension bearing is similar to the magnetic bearing structure in the foregoing description, comprises bearing outside 10a (10b), bearing inner sleeve 20a and axle 30a.Bearing outside 10a, 10b place the two ends of bearing inner sleeve 20a equally respectively, and form the two ends of hemispheric hole 13 in it with ccontaining bearing inner sleeve 20, wherein place the bearing outside 10a on top of bearing inner sleeve 20a the same with the bearing outside 10 of above-mentioned example, be provided with a through hole 11a for axle 30a wear by.Be formed centrally blind hole among the different bearing inner sleeve 20a, i.e. bottom sealing, an axle 30a plugs in the blind hole that is fixed in bearing inner sleeve 20a, has only its top to expose to outside the bearing inner sleeve 20a and wears through hole 11a by bearing outside 10a.Place the bearing outside 10b of the bottom of bearing inner sleeve 20a then also correspondingly to form the structure of sealing in the bottom.This embodiment is applicable to that the end of a 30a bears the situation of load (as the rotor component of radiation fan), and its working principle is same as the previously described embodiments thereby repeat no more.
The magnetive attraction principle of utilizing this magnetic suspension bearing realizes that axle 30 (30a) do not have rotating of machinery friction relative to bearing outside 10 (10a, 10b), improved the working life of bearing structure greatly, and it is simple in structure, bearing inner sleeve 20 (20a) is solid-located with axle 30 (30a), only the magnetic bearing outside 10 of apparatus (10a, 10b) just can reach other complex structures, the same function of bearing that element is various with bearing inner sleeve 20 (20a).
Be illustrated in figure 4 as and adopt the cuing open of a radiation fan of magnetic suspension bearing to show schematic representation.This radiation fan comprises fan frame 50, stator component 60, rotor component 70 and magnetic suspension bearing.
The bottom center of fan frame 50 upwards is convexly equipped with the circular axle bed 52 that forms a hollow, and axle bed 52 inwardly is convexly equipped with the baffle ring 54 that extends to form a circle near the inwall place on its top.
Magnetic suspension bearing comprises a bearing inner sleeve 20c and is symmetrically placed in pair of bearings overcoat 10c, the 10d at bearing inner sleeve 20c two ends.Bearing inner sleeve 20c has identical structure with bearing inner sleeve 20a in the foregoing description, and its center is provided with one and plugs fixing blind hole for an axle 30c.The structure of bearing outside 10c, 10d is also roughly identical with the structure of bearing outside 10a, 10b in the foregoing description, place the bearing outside 10c on the top of bearing inner sleeve 20c be provided with a through hole 11c for axle 30c wear by, the profile of different is bearing outside 10c, 10d is cylindrical shape for the axle bed 52 that cooperates hollow.
During this radiation fan assembling, with the stator component 60 sheathed peripheries that are fixed on axle bed 52.Bearing outside 10c is on the baffle ring 54 that is fixed on axle bed 52, and axle 30c wears by the through hole 11c on the bearing outside 10c, and plugs in the blind hole that is fixed on bearing inner sleeve 20c, thereby makes a 30c and bearing inner sleeve 20c be fixed into one.Bearing outside 10d is fixed on the bottom of bearing inner sleeve 20c and makes bearing inner sleeve 20c and place bearing outside 10c, the 10d at its two ends to keep a determining deviation, the bottom of bearing outside 10d again the sealing cover 80 by a circle is set in order to rigid bearing overcoat 10d.After this radiation fan energising, the alternating magnetic field that stator component 60 produces can drive the rotation of rotor component 70, thereby axle 30c can not have rotating of machinery friction relative to bearing outside 10c, 10d together with bearing inner sleeve 20c, and its working principle has described in detail in the above-described embodiments and do not repeated them here.This radiation fan does not rub owing to there being machinery in the magnetic suspension bearing operation process, thereby the working life that can improve radiation fan greatly.
Claims (13)
1. magnetic suspension bearing, it is characterized in that: comprise pair of bearings overcoat, bearing inner sleeve and axle, this is symmetrically placed in the two ends of bearing inner sleeve and keeps a determining deviation with bearing inner sleeve bearing outside, axle wears and is fixed in the bearing inner sleeve, this bearing inner sleeve and this are made by magnetic material bearing outside, and bearing inner sleeve is identical with the obverse magnetic pole of bearing outside.
2. magnetic suspension bearing as claimed in claim 1 is characterized in that: described bearing inner sleeve is cylindrical shape, and it all forms sphere with this corresponding outer surface to bearing outside.
3. magnetic suspension bearing as claimed in claim 1 is characterized in that: described bearing outside all is the hemisphere shape, and this is to the hole of the hemisphere shape at the two ends that form ccontaining bearing inner sleeve in the bearing outside respectively.
4. magnetic suspension bearing as claimed in claim 1 is characterized in that: all form the through hole that wears for axle on the described bearing outside, and the diameter of through hole is greater than the diameter of axle.
5. magnetic suspension bearing as claimed in claim 1 is characterized in that: the wherein through hole that formation wears for axle on the bearing outside, and the diameter of through hole is greater than the diameter of axle, and the bottom lock of another bearing outside.
6. magnetic suspension bearing as claimed in claim 1 is characterized in that: be formed centrally blind hole in the described bearing inner sleeve, an end of axle plugs in the blind hole that is fixed in bearing inner sleeve.
7. radiation fan, comprise fan frame, magnetic suspension bearing, stator component, rotor component, rotor component comprises one, it is characterized in that: magnetic suspension bearing comprises bearing inner sleeve and is symmetrically placed in the bearing inner sleeve two ends and keeps the pair of bearings overcoat of a determining deviation with bearing inner sleeve, axle plugs and is fixed in the bearing inner sleeve, bearing inner sleeve and bearing outside are made by magnetic material, and bearing inner sleeve is identical with the obverse magnetic pole of bearing outside.
8. radiation fan as claimed in claim 7 is characterized in that: described bearing inner sleeve is cylindrical shape, and it all forms sphere with this corresponding outer surface to bearing outside.
9. radiation fan as claimed in claim 7 is characterized in that: described bearing outside all is cylindrical shape, and this is to the hole of the hemisphere shape at the two ends that form ccontaining bearing inner sleeve in the bearing outside respectively.
10. magnetic suspension bearing as claimed in claim 7 is characterized in that: the wherein through hole that formation wears for axle on the bearing outside, and the diameter of through hole is greater than the diameter of axle, and the bottom lock of another bearing outside.
11. radiation fan as claimed in claim 7 is characterized in that: the bottom center of fan frame upwards is convexly equipped with the axle bed that forms a hollow, and described magnetic suspension bearing places in this axle bed.
12. radiation fan as claimed in claim 11 is characterized in that: the inwall on the top of described axle bed inwardly is convexly equipped with and extends to form a baffle ring, in order to fixedly to place the bearing outside on axle bed top.
13. radiation fan as claimed in claim 11 is characterized in that: the bottom of described axle bed is provided with a sealing cover, in order to fixedly to place the bearing outside of axle bed bottom.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100763879A CN101338789A (en) | 2007-07-04 | 2007-07-04 | Magnetic suspension bearing and heat radiation fan adopting same |
| US11/836,726 US20090010781A1 (en) | 2007-07-04 | 2007-08-09 | Bearing structure for cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100763879A CN101338789A (en) | 2007-07-04 | 2007-07-04 | Magnetic suspension bearing and heat radiation fan adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101338789A true CN101338789A (en) | 2009-01-07 |
Family
ID=40212929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100763879A Pending CN101338789A (en) | 2007-07-04 | 2007-07-04 | Magnetic suspension bearing and heat radiation fan adopting same |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20090010781A1 (en) |
| CN (1) | CN101338789A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943107A (en) * | 2009-07-10 | 2011-01-12 | 王忠玉 | Hemispherical magnetic suspension bearing of huge magnetic suspension vertical shaft diagonal windmill |
| CN102469743A (en) * | 2010-11-04 | 2012-05-23 | 技嘉科技股份有限公司 | Fan module and radiating system |
| CN102537046A (en) * | 2011-12-30 | 2012-07-04 | 张冰青 | Magnetic levitation bearings and magnetic levitation motor |
| CN104696356A (en) * | 2015-02-28 | 2015-06-10 | 深圳市金茂展微电机有限公司 | Bearing, motor and heat-radiating fan |
| CN106257075A (en) * | 2015-06-16 | 2016-12-28 | 蒙特雷布勒盖股份有限公司 | For the magnetic devices making the mandrel of rotation element pivot in watch and clock movement |
| CN109667777A (en) * | 2017-06-02 | 2019-04-23 | 东莞市杰伦塑胶灯饰有限公司 | A kind of control unit for magnetic suspension scavenger fan rotational speed regulation and rebalancing |
| CN110185639A (en) * | 2019-05-20 | 2019-08-30 | 宁波生久散热科技有限公司 | Novel magnetically levitated radiator fan |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4999157B2 (en) * | 2006-12-28 | 2012-08-15 | アネスト岩田株式会社 | Fluid machine coupled to drive source via magnetic coupling |
| US8556601B2 (en) * | 2009-12-16 | 2013-10-15 | Pc-Fan Technology Inc. | Heat-dissipating fan assembly |
| US20110158568A1 (en) * | 2009-12-28 | 2011-06-30 | Mingju Chen | Snap-on fan shaft seat |
| US8616207B2 (en) * | 2010-09-07 | 2013-12-31 | Inova Labs, Inc. | Oxygen concentrator heat management system and method |
| CN106300722A (en) * | 2015-05-18 | 2017-01-04 | 德昌电机(深圳)有限公司 | Motor and electrodynamic pump |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470208A (en) * | 1990-10-05 | 1995-11-28 | Kletschka; Harold D. | Fluid pump with magnetically levitated impeller |
| US6280157B1 (en) * | 1999-06-29 | 2001-08-28 | Flowserve Management Company | Sealless integral-motor pump with regenerative impeller disk |
| TW429289B (en) * | 1999-12-10 | 2001-04-11 | Delta Electronics Inc | Novel magnetic suspending bearing structure |
| US6498412B2 (en) * | 2001-01-26 | 2002-12-24 | Sunonwealth Electric Machine Industry Co., Ltd. | Fixing structure for a rotor of a brushless motor |
| US6849978B2 (en) * | 2002-02-05 | 2005-02-01 | Delta Electronics, Inc. | Motor having a magnetic bearing |
| JP2004150624A (en) * | 2002-09-03 | 2004-05-27 | Seiko Epson Corp | Magnetic bearing device |
| TW200521350A (en) * | 2003-12-25 | 2005-07-01 | Delta Electronics Inc | Magnetic bearing system |
| US20070090706A1 (en) * | 2005-10-20 | 2007-04-26 | Davis Glenn R | Frictionless suspension structure |
-
2007
- 2007-07-04 CN CNA2007100763879A patent/CN101338789A/en active Pending
- 2007-08-09 US US11/836,726 patent/US20090010781A1/en not_active Abandoned
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943107A (en) * | 2009-07-10 | 2011-01-12 | 王忠玉 | Hemispherical magnetic suspension bearing of huge magnetic suspension vertical shaft diagonal windmill |
| CN102469743A (en) * | 2010-11-04 | 2012-05-23 | 技嘉科技股份有限公司 | Fan module and radiating system |
| CN102537046A (en) * | 2011-12-30 | 2012-07-04 | 张冰青 | Magnetic levitation bearings and magnetic levitation motor |
| CN104696356A (en) * | 2015-02-28 | 2015-06-10 | 深圳市金茂展微电机有限公司 | Bearing, motor and heat-radiating fan |
| CN106257075A (en) * | 2015-06-16 | 2016-12-28 | 蒙特雷布勒盖股份有限公司 | For the magnetic devices making the mandrel of rotation element pivot in watch and clock movement |
| CN106257075B (en) * | 2015-06-16 | 2018-11-20 | 蒙特雷布勒盖股份有限公司 | Magnetic devices for pivoting the mandrel of rotating element in watch and clock movement |
| CN109667777A (en) * | 2017-06-02 | 2019-04-23 | 东莞市杰伦塑胶灯饰有限公司 | A kind of control unit for magnetic suspension scavenger fan rotational speed regulation and rebalancing |
| CN109667777B (en) * | 2017-06-02 | 2020-11-06 | 东莞市杰伦塑胶灯饰有限公司 | Control part for adjusting and rebalancing rotating speed of magnetic suspension ventilation fan |
| CN110185639A (en) * | 2019-05-20 | 2019-08-30 | 宁波生久散热科技有限公司 | Novel magnetically levitated radiator fan |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090010781A1 (en) | 2009-01-08 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |