CN101232218B - Fan and motor thereof - Google Patents
Fan and motor thereof Download PDFInfo
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- CN101232218B CN101232218B CN2007100040653A CN200710004065A CN101232218B CN 101232218 B CN101232218 B CN 101232218B CN 2007100040653 A CN2007100040653 A CN 2007100040653A CN 200710004065 A CN200710004065 A CN 200710004065A CN 101232218 B CN101232218 B CN 101232218B
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- bearing pedestal
- bearing
- spare
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Abstract
The invention discloses a fan, which comprises a motor and an impeller, wherein the motor drives the impeller to rotate, and the motor comprises a base seat, a bearing, a stator, a rotor and a magnetic body. The central part of the base seat extends to form a bearing support; the bearing is arranged inside the bearing support; the stator is sleeved on the outer circumference of the bearing support; the rotor and the stator correspond to each other; a rotating shaft passes through the bearing; the magnetic body is arranged at the bottom of the bearing support, and is positioned close to one end of the rotating shaft.
Description
Technical field
The present invention relates to a kind of fan and motor thereof, particularly relate to a kind of fan and motor thereof of keeping the rotor stability equilbrium running.
Background technology
When fan running, active force that comes from the outside or air-flow cause rotor outwards to move to the reaction force of rotor, make the rotor up-down vibration cause the equilbrium position to change, and produce mechanical interference with intraware or external module, cause noise to produce and component wear, and the outside athletic meeting of rotor adds the distance between greater trochanter and the magnetic induction part, influences the induction usefulness of magnetic induction part to magnetic field.
See also shown in Figure 1ly, for solving this problem, a kind of existing fan 1 comprises a motor 10 and an impeller 100, and motor 10 drives impeller 100 are rotated.Motor 10 comprises a base 11, a rotor 12, a bearing 13, a stator 14, a wear plate 17, a circuit board 18 and a Hall element (Hallelement) 19.The centre of base 11 is extended and is formed a bearing pedestal 111, is inserted in wear plate 17 and bearing 13 in it in regular turn.Stator 14 be sheathed on bearing pedestal 111 and with circuit board 18 electrical ties.Rotor 12 and stator 14 corresponding settings, and rotor 12 has a rotating shaft 121 and a magnet ring 122, and bearing pedestal 111 is inserted in rotating shaft 121, wears bearing 13 and butt wear plate 17, magnet ring 122 and stator 14 corresponding settings.Hall element 19 is in order to the pole change of inductiopn rotor 12.
When 100 runnings of motor 10 drives impeller, because of being subjected to extraneous active force or airflow influence, reaction force causes rotor 12 outwards to move, though keep certain levitated equilibrium position when the magnetic reciprocal force that rotor 12 and stator are 14 can make rotor 12 rotations, but the variation that air-flow switches the active force or the electromagnetic force of rotor 12, easily make rotor 12 up-down vibration cause the equilbrium position to change, and produce noise and component wear, influence the heat dissipation and the useful life of fan 1.For improving the smoothness that rotor 12 rotates, prior art is the distance of the center line of the center line of the magnet ring 122 by adjusting rotor 12 and stator 14 usually, also be that magnetic biasing is apart from D, to strengthen the magnetic reciprocal force of 14 of rotor 12 and stators, to reach the effect that rotor 12 balance and stabilities rotate of keeping.
Yet, because structural limitations makes magnetic biasing adjust apart from D certain scope is arranged, can't satisfy the needs of adjustment.And magnetic biasing is crossed conference apart from D and is produced electrical equipment switching sound (Switch Noise) and form noise, and the distance of 12 of the Hall element 19 that is arranged at circuit board 18 and rotors is increased, and make 19 field weakenings that can respond to of Hall element, and then cause motor 10 characteristics (for example current waveform and rotating speed etc.) to be affected.
Therefore, how to provide a kind of fan and motor thereof, avoid component wear and noise to keep the rotor stability equilbrium running, reduce the distance between rotor and sensing element simultaneously, improve the sensitivity of sensing element, and then promote reliability and useful life, become one of important topic magnetic field.
Summary of the invention
Because above-mentioned problem, purpose of the present invention is for providing a kind of fan and motor thereof by the bottom of magnetic in bearing pedestal is set, and be adjacent to an end of rotating shaft, make the end of magnetic and rotating shaft produce the magnetic reciprocal force, to keep rotating shaft stable equilibrium running, avoid component wear and noise, and then promote useful life.
Because above-mentioned problem, another object of the present invention is for providing a kind of fan and motor thereof, by the end generation magnetic reciprocal force of magnetic and rotating shaft, to reduce the distance between rotor and sensing element, improve the sensitivity of sensing element, and then promote reliability magnetic field.
Edge is that for reaching above-mentioned purpose, according to a kind of motor of the present invention, it comprises a base, a bearing, a stator, a rotor and a magnetic.The centre of base extends to form a bearing pedestal, and bearing is placed in the bearing pedestal, and stator is placed on the outer peripheral edges of bearing pedestal, the corresponding setting of rotor with stator, and have a rotating shaft and be arranged in bearing; Magnetic is arranged at the bottom of bearing pedestal, and is adjacent to an end of rotating shaft.
For reaching above-mentioned purpose, according to a kind of fan of the present invention, it has a motor and an impeller, the motor driven wheel rotation, and motor comprises a base, a bearing, a stator, a rotor and a magnetic.The centre of base extends to form a bearing pedestal, and bearing is placed in the bearing pedestal, and stator is placed on the outer peripheral edges of bearing pedestal, the corresponding setting of rotor with stator, and have a rotating shaft and be arranged in bearing; Magnetic is arranged at the bottom of bearing pedestal, and is adjacent to an end of rotating shaft.
From the above, because of foundation a kind of fan of the present invention and motor thereof, it is arranged at magnetic the bottom of bearing pedestal, the magnetic reciprocation of the end by magnetic and rotating shaft, do not need to continue to increase the offset distance (magnetic biasing apart from) of the center line of rotor and stator, promptly can keep rotating shaft stable equilibrium running.Compared with prior art, the present invention can avoid component wear and noise, promotes useful life, in addition, can reduce the distance between rotor and sensing element, improves the sensitivity of sensing element to magnetic field, promotes reliability.Moreover the present invention more can arrange in pairs or groups and hinder magnetic spare, effectively intercepts the influence of magnetic field to electronic component in the client, and the wearing piece of also can arranging in pairs or groups prevents the friction between rotating shaft and resistance magnetic spare.
Description of drawings
Fig. 1 is the schematic diagram of a kind of existing fan and motor thereof;
Fig. 2 is according to a kind of fan of preferred embodiment of the present invention and the schematic diagram of motor thereof;
Fig. 3 A to Fig. 3 D is for to have the schematic diagram that difference is provided with state according to the fan of preferred embodiment of the present invention and the resistance magnetic spare and the wearing piece of motor thereof.
The component symbol explanation:
1,2 fans, 10,20 motors
100,200 impellers, 11,21 bases
111,211 bearing pedestals, 12,22 rotors
121,221 rotating shafts, 122,222 magnet rings
13,23 bearings, 14,24 stators
17 wear plates, 18,28 circuit boards
19 Hall element 221a ends
25 magnetics 26,26 ' resistance magnetic spare
27 wearing pieces, 29 magnetic induction parts
D magnetic biasing distance
Embodiment
Hereinafter with reference to correlative type, a kind of fan and motor thereof according to preferred embodiment of the present invention are described, wherein components identical will be illustrated with identical reference marks.
See also shown in Figure 2ly, a kind of fan 2 of preferred embodiment of the present invention comprises a motor 20 and an impeller 200, and motor 20 drives impeller 200 are rotated, and motor 20 comprises a base 21, a bearing 23, a stator 24, a rotor 22 and a magnetic 25.The centre of base 21 extends to form a bearing pedestal 211, bearing 23 is placed in the bearing pedestal 211, stator 24 is placed on the outer peripheral edges of bearing pedestal 211, rotor 22 has a rotating shaft 221 and a magnet ring 222, magnet ring 222 and stator 24 corresponding settings, stator 24 twines a plurality of silicon steel sheet by a coil and is constituted, and 221 of rotating shafts wear and are installed on bearing 23.Magnetic 25 is a circulus, is arranged at the bottom of bearing pedestal 211, and be surrounded on rotating shaft 221 an end 221a around, and butt bearing 23, magnetic 25 is such as but not limited to a magnet, an electromagnet or a magnetite.
Action principle and effect that magnetic 25 is provided are as described below, when fan 2 is in operating condition, because of the active force in the external world or air-flow will make rotor 22 outwards move to the reaction force of rotor 22, and make rotor 22 exceed framework and cause the equilbrium position of rotor 22 and stator 24 to produce changing.Because magnetic 25 is around around the end 221a that is arranged at rotating shaft 221, by the magnetic reciprocal force between the end 221a of magnetic 25 and rotating shaft 221, magnetic 25 tightly adsorbs the end 221a of fixed rotating shaft 221, not only make the unlikely change in equilbrium position of rotor 22 and stator 24, more make the unlikely bump of the end 221a assembly on every side of rotating shaft 221, thereby can turn round continually and steadily.Simultaneously, resistance magnetic spare 26 can intercept the magnetic field of magnetic 25 to electronic component generation interference or other influences in the client.
See also shown in Fig. 3 A to Fig. 3 D, resistance magnetic spare 26 and wearing piece 27 are arranged at the mode of the bottom of bearing pedestal 211, and the different states that is provided with can be arranged.As shown in Figure 3A, resistance magnetic spare 26 can be shaped in the bottom of bearing pedestal 211, and magnetic 25 and wearing piece 27 are then accepted in its top.Perhaps, shown in Fig. 3 B, wearing piece 27 can with resistance magnetic spare 26 one-body molded making, the end 221a of wearing piece 27 butt rotating shafts 221, magnetic 25 is then accepted in resistance magnetic spare 26 tops.Perhaps, shown in Fig. 3 C, resistance magnetic spare 26 and wearing piece 27 can be shaped in the bottom of bearing pedestal 211.In addition, resistance magnetic spare 26 is disk shape or the ring plate shape except that as implied above, also can be shown in Fig. 3 D, resistance magnetic spare 26 ' be cylindric and be a resistance magnetosheath, be arranged at the bottom of bearing pedestal 211, be inserted in magnetic 25 and wearing piece 27 again, avoid the magnetic field of magnetic 25 that electronic component in the client is impacted, make the more polynary design of resistance magnetic spare 26 ' have.
In sum, because of being the bottom that magnetic is arranged at bearing pedestal according to a kind of fan of the present invention and motor thereof, the magnetic reciprocation of the end by magnetic and rotating shaft does not need to continue to increase the offset distance (magnetic biasing apart from) of the center line of rotor and stator, promptly can keep rotating shaft stable equilibrium running.Compared with prior art, the present invention can avoid component wear and noise, promotes useful life.In addition, can reduce the distance between rotor and sensing element, improve the sensitivity of sensing element, promote reliability magnetic field.Moreover the present invention more can arrange in pairs or groups and hinder magnetic spare, effectively intercepts the influence of magnetic field to electronic component in the client, and the wearing piece of also can arranging in pairs or groups prevents the friction between rotating shaft and resistance magnetic spare.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the appended claim its equivalent modifications of carrying out or change.
Claims (16)
1. motor comprises:
One base, its centre extends to form a bearing pedestal, and this bearing pedestal has closed bottom;
One bearing is placed in this bearing pedestal;
One stator is placed on the outer peripheral edges of this bearing pedestal;
One rotor, corresponding setting with this stator, and have a rotating shaft and be arranged in this bearing;
One hinders magnetic spare, is arranged at the bottom of this closure of this bearing pedestal; And
One single magnetic, be arranged at this bearing pedestal this closure the bottom and be arranged on this resistance magnetic spare, wherein this single magnetic is around an end of this rotating shaft.
2. motor as claimed in claim 1, wherein this resistance magnetic spare is formed in one in the bottom of this bearing pedestal, or is linked to the bottom of this closure of this bearing pedestal with gluing, welding or chimeric mode.
3. motor as claimed in claim 1 wherein should link with this magnetic by resistance magnetic spare.
4. motor as claimed in claim 1, wherein this resistance magnetic spare is positioned at this magnetic below.
5. motor as claimed in claim 1, wherein this resistance magnetic spare is disk shape, ring plate shape or cylindric.
6. motor as claimed in claim 5 is arranged at the bottom of this closure of this bearing pedestal when wherein this resistance magnetic spare is cylindric, this magnetic and wearing piece are inserted in wherein.
7. motor as claimed in claim 1, wherein this resistance magnetic spare is used to avoid an external system of this motor of magnetic interference of this magnetic.
8. motor as claimed in claim 1 more comprises:
One wearing piece is arranged at the bottom of this closure of this bearing pedestal and this end of this rotating shaft of butt.
9. motor as claimed in claim 8, wherein this magnetic and a wearing piece are accepted in this resistance magnetic spare top.
10. motor as claimed in claim 9, wherein this wearing piece and this resistance magnetic spare link.
11. motor as claimed in claim 9, wherein this wearing piece and this resistance magnetic spare are formed in one and make.
12. motor as claimed in claim 1, wherein this magnetic is a magnet, an electromagnet or a magnetite.
13. motor as claimed in claim 1, wherein this magnetic in the form of a ring, and be surrounded on this rotating shaft this end around, and this bearing of butt.
14. motor as claimed in claim 1 more comprises:
One magnetic induction part, corresponding setting with this rotor.
15. motor as claimed in claim 14, wherein this magnetic induction part is one to be arranged at the Hall element of a circuit board.
16. a fan has a motor and an impeller, this wheel rotation of this motor driven, and this motor comprises:
One base, its centre extends to form a bearing pedestal, and this bearing pedestal has closed bottom;
One bearing is placed in this bearing pedestal;
One stator is placed on the outer peripheral edges of this bearing pedestal;
One rotor, corresponding setting with this stator, and have a rotating shaft and be arranged in this bearing;
One hinders magnetic spare, is arranged at the bottom of this closure of this bearing pedestal;
One single magnetic, be arranged at this bearing pedestal this closure the bottom and be arranged on this resistance magnetic spare, wherein this single magnetic is around an end of this rotating shaft, and
One wearing piece is arranged at the bottom of this closure of this bearing pedestal, and this end of this rotating shaft of butt, and this wearing piece does not contact with this single magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100040653A CN101232218B (en) | 2007-01-23 | 2007-01-23 | Fan and motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100040653A CN101232218B (en) | 2007-01-23 | 2007-01-23 | Fan and motor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101232218A CN101232218A (en) | 2008-07-30 |
| CN101232218B true CN101232218B (en) | 2010-10-13 |
Family
ID=39898462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100040653A Active CN101232218B (en) | 2007-01-23 | 2007-01-23 | Fan and motor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101232218B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338102B (en) * | 2010-07-16 | 2013-12-04 | 台达电子工业股份有限公司 | Fan structure |
| CN103867461A (en) * | 2012-12-12 | 2014-06-18 | 富瑞精密组件（昆山）有限公司 | Cooling fan |
| CN106090012B (en) * | 2016-08-19 | 2018-11-16 | 珠海格力电器股份有限公司 | control method and device for magnetic suspension bearing |
| CN114183468B (en) * | 2021-12-08 | 2022-11-15 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6265798B1 (en) * | 1999-08-02 | 2001-07-24 | Delta Electronics, Inc. | Motor having a magnetic bearing |
| CN1638236A (en) * | 2003-12-24 | 2005-07-13 | 松下电器产业株式会社 | Brushless motor |
-
2007
- 2007-01-23 CN CN2007100040653A patent/CN101232218B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6265798B1 (en) * | 1999-08-02 | 2001-07-24 | Delta Electronics, Inc. | Motor having a magnetic bearing |
| CN1638236A (en) * | 2003-12-24 | 2005-07-13 | 松下电器产业株式会社 | Brushless motor |
Non-Patent Citations (2)
| Title |
|---|
| JP平11-93888A 1999.04.06 |
| JP平1-194832A 1989.08.04 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101232218A (en) | 2008-07-30 |
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