CN101494401A

CN101494401A - Motor and fan having dustproof and dissipating heat function

Info

Publication number: CN101494401A
Application number: CNA2008100045702A
Authority: CN
Inventors: 陈弘琪
Original assignee: Delta Optoelectronics Inc
Current assignee: Delta Electronics Inc; Delta Optoelectronics Inc
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2009-07-29
Anticipated expiration: 2028-01-25
Also published as: CN101494401B

Abstract

The invention provides a fan with dustproof and thermal discharge functions and a motor thereof. The motor comprises a shell that is provided with a closed space and composed of a heat conduction material, a stator fixed in the shell, and a rotor, which is provided with a rotating shaft and arranged through the stator and one end of which projects out of the closed space to be connected with an impeller, wherein, the stator and the rotor are contained in the closed space.

Description

The motor and the fan of the dustproof and heat sinking function of tool

Technical field

The present invention relates to a kind of motor, particularly relate to the motor and the fan of the dustproof and heat sinking function of a kind of tool.

Background technology

Motor is the parts that are used for converting electrical energy into mechanical energy, and in the extensive use mechanical structure in daily life, for example fan.Motor of a great variety, it is broadly divided into inner rotor motor and external-rotor motor, and these two main be respectively that the set position of rotor is the motor inboard or the outside.

Please refer to shown in Figure 1ly, existing external-rotor motor 1 comprises bearing pedestal 10, rotor 11, stator 12 and circuit board 13.Wherein this bearing pedestal 10 comprises a central siphon portion 101, and at least one bearing 102 is contained in the central siphon portion 101.Rotor 11 comprises rotating shaft 111, iron-clad 112 and magnet ring 113, and rotating shaft 111 is embedded at iron-clad 112 and is arranged in central siphon portion 101 and bearing 102, and magnet ring 113 is located on the inwall of iron-clad 112.

Stator 12 comprises a plurality of coil groups, and these a plurality of coil groups are linked to central siphon portion 101 and corresponding magnet ring 113 is provided with.Circuit board 13 is sheathed and be linked to central siphon portion 101, and is arranged on the bearing pedestal 10, and is electrically connected with coil groups.By the sense of current of circuit board 13 drive coil groups, make the magnet ring 113 of coil groups and rotor 11 produce the action of a magnetic field, and then make rotor 11 rotations.

Yet, the structure of this kind external-rotor motor 1, because the collocation of the gap between each member is more, so its sealing deficiency, make that its protection effect is relatively poor.For example there are clearance G in 10 of rotor 11 and bearing pedestals; therefore foreign matter, aqueous vapor or the outside dust etc. of external environment enter the inside of external-rotor motor 1 easily via clearance G; cause the unusual or damage of motor, thereby the reliability and the useful life of reducing external-rotor motor 1.

Summary of the invention

Because above-mentioned problem, the object of the present invention is to provide the motor and the fan of the dustproof and heat sinking function of a kind of tool.

Edge is that for reaching above-mentioned purpose, motor of the present invention comprises a housing, has a confined space, and is made of a heat conduction material; One stator is fixed in this housing; And a rotor, have a rotating shaft, be arranged in this stator, and the one distal process links with an impeller for outside this confined space, wherein this stator and this rotor are contained in this confined space.

For reaching above-mentioned purpose, fan of the present invention comprises a motor, and it comprises a housing, has a confined space, and is made of a heat conduction material; One stator is fixed in this housing; And a rotor, have a rotating shaft, be arranged in this stator, and the one distal process is for outside this confined space, wherein this stator and this rotor are contained in this confined space; And an impeller, be linked to this rotating shaft.

This housing is made of one first housing and one second housing.This first housing and this second housing can link by engaging, bonding or sealed mode.

This second housing has a central siphon portion, and this rotating shaft is located in this central siphon portion.This fan more comprises at least one bearing, is arranged in this central siphon portion, to support this rotating shaft.This fan more comprises a securing member, links with this rotating shaft, and contacts with this bearing.

In addition, this fan comprises a drive unit, is sheathed on this rotating shaft and is arranged in this confined space, and be electrically connected with this stator, and this drive unit comprises a circuit board.

Preferably, this fan more comprises a plurality of radiating fins, is arranged at this surface of shell.

In addition, this fan more comprises an enclosing cover, links with this housing, a drive unit or circuit board can be arranged in this enclosing cover.

This impeller comprises a wheel hub and is located on a plurality of blades around this wheel hub, and this hub surface has at least one through hole, and when this wheel rotation, extraneous cold air can suck via this through hole, will accumulate heat dissipation in this housing to extraneous.This impeller is preferably a receded disk impeller or an aial flow impeller.

From the above, because motor of the present invention is that stator, rotor and drive unit are contained in the confined space, this confined space is made of the housing with thermal conducting function.Motor of the present invention has splendid seal, to reach effective protection motor internal structure.In addition, more set up radiating fin, strengthen cooling surface area in surface of shell.Therefore, motor shell of the present invention can reach heat radiation and dustproof effect simultaneously.

Description of drawings

Fig. 1 is the schematic diagram of existing external-rotor motor;

Fig. 2 is the three-dimensional exploded view according to a kind of motor of preferred embodiment of the present invention;

The cutaway view of the fan that Fig. 3 connects to for motor shown in Figure 2 and impeller; And

Fig. 4 is the cutaway view according to the fan of another preferred embodiment of the present invention.

The main element symbol description

1,2 motors, 10 bearing pedestals

101

central siphon portions

102,27a, 27b bearing

11,22 rotors, 111,221 rotating shafts

112 iron-clads, 113 magnet rings

12,21 stators, 13 circuit boards

222 magnetic conduction shells, 23 drive units

24 confined spaces, 311 through holes

251 first housings, 252 second housings

2521 central siphon portions, 26 screws

29 securing members, 3 impellers

31 wheel hubs, 32 blades

4 radiating fins, 5 enclosing covers

Embodiment

Hereinafter with reference to relevant drawings, illustrate according to a kind of motor of preferred embodiment of the present invention and the fan that uses this motor.Wherein components identical will be illustrated with identical reference marks.

Fig. 2 is the three-dimensional exploded view that shows the motor of preferred embodiment of the present invention.Motor 2 comprises a stator 21, a rotor 22 and a drive unit 23.

Drive unit 23 is electrically connected with this stator 21, and this drive unit 23 has a circuit board.In addition, rotor 22 comprises a rotating shaft 221 and a magnetic conduction shell 222, and this rotating shaft 221 links or is embedded among magnetic conduction shell 222.This stator 21 is made up of silicon steel sheet and coil.

Motor 2 more comprises one first housing 251 and one second housing 252, the material of first housing 251 and second housing 252 can be copper, aluminium, metal or heat conducting material, and the two can engage, bonding or sealed mode links, to form a confined space 24 (as shown in Figure 3).At this, first housing 251 and second housing 252 are sealed by screw 26.In addition, first housing 251 has an accommodation space and has a central siphon portion 2521 with ccontaining this stator 21 and rotor 22, the second housings 252.In when assembling, stator 21 and drive unit 23 are sheathed on central siphon portion 2521, and the rotating shaft 221 of rotor 22 wore central siphon portion 2521, and protrude in outside second housing 252.This stator 21 is fixed in first housing 251, and the heat that is produced when motor running can dissipate to the external world by first housing 251 and second housing 252.

In addition, this motor 2 more comprises two bearing 27a, 27b, and when assembling, bearing 27a, 27b are sheathed on rotating shaft 221 and are arranged in the central siphon portion 2521.This bearing 27a, 27b can be an oiliness bearing or a ball bearing.In addition, this motor 2 more comprises a securing member 29, and it is in order to the position of location bearing 27b, and the opposing axial moment.

Fig. 3 is the motor 2 of displayed map 2 and the fan cutaway view after an impeller 3 bindings.This impeller 3 is made up of a wheel hub 31 and the blade 32 that is located on these wheel hub 31 base plate peripheries.This motor 2 is positioned at this wheel hub 31 belows, and part is contained in this wheel hub 31.Protruding in the 252 outer rotating shafts 221 of second housing links with this wheel hub 31.These wheel hub 31 surfaces have at least one through hole 311, and when this impeller 3 rotated, extraneous cold air can be forced to suck via this through hole 311, will accumulate heat dissipation in first housing 251 and second housing, 252 surfaces to extraneous, to reach radiating effect.This impeller 3 can be a receded disk impeller or an aial flow impeller.

Other sees also Fig. 4, it shows the fan of another preferred embodiment of the present invention, and its structure is roughly similar to above-mentioned fan shown in Figure 3, and both differences are that the surface of first housing 251 has more a plurality of radiating fins 4, can strengthen the surface area of heat radiation, the heat dissipation that motor produced is extremely extraneous.In addition, this fan more comprises an enclosing cover 5, is linked to this first housing 251, with the drive unit of ccontaining motor or circuit board 23 in it.

In sum, fan of the present invention and motor are that stator, rotor and drive unit are contained in the confined space, and confined space can be made of the housing with thermal conducting function.Compare with prior art, motor of the present invention has splendid seal, reaching effective protection motor internal structure, and then improves the reliability and the purpose in useful life.In addition, more set up radiating fin, strengthen cooling surface area in surface of shell.Therefore, the housing of fan of the present invention and motor can reach heat radiation and dustproof effect simultaneously.

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 comprise in the appended claims its equivalent modifications of carrying out or change.

Claims

1. motor comprises:

Housing has a confined space, and is made of a heat conduction material;

Stator is fixed in this housing; And

Rotor has rotating shaft, is arranged in this stator, and the one distal process is for outside this confined space, and wherein this stator and this rotor are contained in this confined space.

2. motor as claimed in claim 1, wherein this housing is made up of first housing and second housing.

3. motor as claimed in claim 2, wherein this first housing and this second housing link with engaging, bonding or sealed mode.

4. motor as claimed in claim 2, wherein this second housing has central siphon portion, and this rotating shaft is located in this central siphon portion.

5. motor as claimed in claim 4, it more comprises:

At least one bearing is arranged in this central siphon portion, to support this rotating shaft; And

Securing member links with this rotating shaft, to locate this bearing.

6. motor as claimed in claim 1, it more comprises drive unit or circuit board, is sheathed on this rotating shaft and is arranged in this confined space, and be electrically connected with this stator.

7. motor as claimed in claim 1, it more comprises a plurality of radiating fins, is arranged at this surface of shell.

8. motor as claimed in claim 1, it more comprises enclosing cover, links with this housing.

9. motor as claimed in claim 8, it more comprises drive unit or circuit board, is arranged in this enclosing cover.

10. fan comprises:

Motor comprises:

Housing has a confined space, and is made of a heat conduction material;

Stator is fixed in this housing; And

Rotor has a rotating shaft, is arranged in this stator, and the one distal process is for outside this confined space, and wherein this stator and this rotor are contained in this confined space; And

Impeller is linked to this rotating shaft.

11. fan as claimed in claim 10, wherein this housing is made up of first housing and second housing.

12. fan as claimed in claim 11, wherein this first housing and this second housing link with engaging, bonding or sealed mode.

13. fan as claimed in claim 12, wherein this second housing has central siphon portion, and this rotating shaft is located in this central siphon portion.

14. fan as claimed in claim 13, it more comprises: at least one bearing is arranged in this central siphon portion, to support this rotating shaft; And

Securing member links with this rotating shaft, to locate this bearing.

15. fan as claimed in claim 10, it more comprises drive unit or circuit board, is sheathed on this rotating shaft and is arranged in this confined space, and be electrically connected with this stator.

16. fan as claimed in claim 10, it more comprises a plurality of radiating fins, is arranged at this surface of shell.

17. fan as claimed in claim 10, it more comprises enclosing cover, links with this housing.

18. fan as claimed in claim 17, it more comprises drive unit or circuit board, is arranged in this enclosing cover.

19. fan as claimed in claim 10, wherein this impeller comprises wheel hub and is located on this wheel hub a plurality of blades on every side, and wherein this hub surface has at least one through hole, when this wheel rotation, extraneous cold air can suck via this through hole, will accumulate in the heat dissipation of this housing extremely extraneous.

20. fan as claimed in claim 10, wherein this heat conduction material is copper, aluminium or metal.