CN109742892A - A kind of radiator structure of external rotor electric machine - Google Patents
A kind of radiator structure of external rotor electric machine Download PDFInfo
- Publication number
- CN109742892A CN109742892A CN201910203475.3A CN201910203475A CN109742892A CN 109742892 A CN109742892 A CN 109742892A CN 201910203475 A CN201910203475 A CN 201910203475A CN 109742892 A CN109742892 A CN 109742892A
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- China
- Prior art keywords
- electric machine
- rotor
- radiator structure
- cooling fin
- external rotor
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Links
- 238000001816 cooling Methods 0.000 claims abstract description 68
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 13
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of radiator structures of external rotor electric machine, including stator and rotor, the rotor is covered in stator exterior, the apex rotor is fixedly installed with end cap by several equally distributed first bolts, the apex rotor offers the first mounting hole corresponding with the first bolt, the end cover surface offers the first bolt hole corresponding with the first bolt, the rotor bottom end is provided with the first cooling mechanism, the stator bottom end is provided with the second cooling mechanism, present invention improves over the structures of external rotor electric machine, in such a way that active heat dissipation and passive heat radiation combine, the heat Quick diffusing for enabling motor Inside coil to generate is gone out, avoid harm of the thermal accumlation to motor, extend the service life of motor.
Description
Technical field
The present invention relates to technical field of motors, specially a kind of radiator structure of external rotor electric machine.
Background technique
External rotor electric machine refers to that shell rotates, the fixed motor of axis, relatively conventional external rotor electric machine such as ceiling fan.Outside
During the work time, alternating current generates eddy-current loss in iron core and magnetic yoke to rotor electric machine, can generate a large amount of heat.These
Temperature increases when heat makes motor work, and excessively high temperature will affect the normal work of motor, can not only make conductor resistance
Increase to increase loss reduction efficiency, can also reduce the magnetic even loss of excitation of magnet steel (permanent magnet), when temperature is more than insulation
When the limit of working temperature of material, insulation failure can be made, be mutually grounded so as to cause certain or three-phase between short circuit etc. it is serious
Consequence.Therefore, it is necessary to improve the structure of current external rotor electric machine, reach better heat dissipation effect.
Summary of the invention
The purpose of the present invention is to provide a kind of radiator structures of external rotor electric machine, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of radiator structure of external rotor electric machine, including stator and rotor, the rotor are covered in stator exterior, the apex rotor
It is fixedly installed with end cap by several equally distributed first bolts, the apex rotor offers corresponding with the first bolt
First mounting hole, the end cover surface offer the first bolt hole corresponding with the first bolt, and the rotor bottom end is provided with
First cooling mechanism, the stator bottom end are provided with the second cooling mechanism.
Preferably, the stator includes inner cylinder, and the periphery fixing sleeve of the inner cylinder is equipped with iron core, around wired on the iron core
Circle.
Preferably, first cooling mechanism includes cooling fin, and the cooling fin is in the arc of microbend, the rotor floor
End is provided with guide plate, and the cooling fin is provided with multiple groups, and multiple groups cooling fin is uniformly arranged on guide plate bottom end, and the guide plate surface is opened
Equipped with several ventilation slots.
Preferably, the bottom end of the inner cylinder extends to below cooling fin, and passes through several second bolts and the second heat dissipation machine
Structure is fixedly connected, and the lower end surface of the inner cylinder offers the second mounting hole corresponding with the second bolt.
Preferably, the cooling fin, inner cylinder and the second cooling mechanism are aluminium material.
Preferably, second cooling mechanism includes several fan-shaped cooling fins, the sector fin surface offer with
The periphery of corresponding second bolt hole of second bolt, the sector cooling fin is provided with several equally distributed fins, described
Fan-shaped fin surface offers several location holes.
Preferably, the fin includes interconnecting piece, and one end of the interconnecting piece is connected on fan-shaped cooling fin, and the other end connects
Two groups of symmetrical branch portions are connected to, the branch portion is provided with lug boss far from one end of interconnecting piece.
Preferably, the outer side wall surface of the interconnecting piece is provided with several equally distributed first protrusions, the branch portion
Outer side wall surface be provided with it is several it is equally distributed second protrusion.
Compared with prior art, the beneficial effects of the present invention are: cooling fin can be with the rotation of rotor in motor work
And rotate, since cooling fin itself has certain radian, neighbouring air can be stirred, air-flow is caused to flow, is formed from upper past
Under brush effect, the heat near coil is distributed outward, formed heat dissipation effect；Air-flow is brushed in the second cooling mechanism simultaneously
On, make the heat Quick diffusing accumulated on the second cooling mechanism, helps to improve the heat dissipation effect of the second cooling mechanism；Heat dissipation
Piece, inner cylinder and the second cooling mechanism are aluminium material, and aluminium has good thermal conductivity, improve heat dissipation effect；One end of inner cylinder is straight
It connects and is directly contacted with the second cooling mechanism with iron core, coil contact, the other end, play conductive force, heat is promoted quickly to conduct
To the second cooling mechanism, passive heat radiation is carried out；Fin is arranged by special shape, is saving manufacture material, is reducing cost
While, the heat dissipation area of fin entirety is increased, radiating efficiency is improved, heat dissipation effect is more obvious；First protrusion and the
Two protrusions increase fin and extraneous contact area, improve heat dissipation effect, while playing the role of similar reinforcing rib, enhance
Integral strength.Present invention improves over the structures of external rotor electric machine, in such a way that active heat dissipation and passive heat radiation combine,
The heat Quick diffusing for enabling motor Inside coil to generate is gone out, and thermal accumlation is avoided to extend motor to the harm of motor
Service life.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the radiator structure of external rotor electric machine；
Fig. 2 is the bottom view of the second cooling mechanism in a kind of radiator structure of external rotor electric machine；
Fig. 3 is the enlarged drawing in Fig. 2 at A.
In figure: 1- stator, 2- rotor, 3- end cap, the first bolt of 4-, the first mounting hole of 5-, the first bolt hole of 6-, in 7-
Cylinder, 8- iron core, 9- coil, 10- guide plate, 11- cooling fin, the second cooling mechanism of 12-, the second mounting hole of 13-, the second bolt of 14-
Hole, 15- sector cooling fin, 16- fin, 17- location hole, 18- interconnecting piece, 19- branch portion, 20- lug boss, the first protrusion of 21-,
The second protrusion of 22-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1~3 are please referred to, the present invention provides a kind of technical solution: a kind of radiator structure of external rotor electric machine, including stator
1 with rotor 2, for 2 sets of the rotor outside stator 1,2 top of rotor is fixed by several equally distributed first bolts 4
End cap 3 is installed, 2 top of rotor offers first mounting hole 5 corresponding with the first bolt 4, and 3 surface of end cap is opened
Equipped with first bolt hole 6 corresponding with the first bolt 4,2 bottom end of rotor is provided with the first cooling mechanism, the stator 1
Bottom end is provided with the second cooling mechanism 12.
The stator 1 includes inner cylinder 7, and the periphery fixing sleeve of the inner cylinder 7 is equipped with iron core 8, is wound with coil on the iron core 8
9。
First cooling mechanism includes cooling fin 11, and the cooling fin 11 is in the arc of microbend, 2 bottom end of rotor
It is provided with guide plate 10, the cooling fin 11 is provided with multiple groups, and multiple groups cooling fin 11 is uniformly arranged on 10 bottom end of guide plate, the guide plate
10 surfaces offer several ventilation slots, and since cooling fin 11 is fixed on rotor 2, in motor work, cooling fin 11 can be with
The rotation of rotor 2 and rotate, since cooling fin 11 itself has certain radian, neighbouring air can be stirred, cause air-flow stream
It is dynamic, formed from top to bottom brush effect, the heat near coil 9 is distributed outward, forms heat dissipation effect；Air-flow brushes simultaneously
On the second cooling mechanism 12, make the heat Quick diffusing accumulated on the second cooling mechanism 12, helps to improve the second heat dissipation machine
The heat dissipation effect of structure 12.
The bottom end of the inner cylinder 7 extends to 11 lower section of cooling fin, and passes through several second bolts and the second cooling mechanism 12
It is fixedly connected, the lower end surface of the inner cylinder 7 offers the second mounting hole 13 corresponding with the second bolt.
The cooling fin 11, inner cylinder 7 and the second cooling mechanism 12 are aluminium material, and aluminium has good thermal conductivity, are improved
Heat dissipation effect；One end of inner cylinder 7 is directly contacted with iron core 8, coil 9, and the other end is directly contacted with the second cooling mechanism 12, is played
Conductive force promotes heat quickly to conduct to the second cooling mechanism 12, carries out passive heat radiation.
Second cooling mechanism 12 includes several fan-shaped cooling fins 15, and 15 surface of the sector cooling fin offers and the
The periphery of corresponding second bolt hole 14 of two bolts, the sector cooling fin 15 is provided with several equally distributed fins 16,
15 surface of the sector cooling fin offers several location holes 17.
The fin 16 includes interconnecting piece 18, and one end of the interconnecting piece 18 is connected on fan-shaped cooling fin 15, the other end
Two groups of symmetrical branch portions 19 are connected with, the branch portion 19 is provided with lug boss 20 far from one end of interconnecting piece 18, leads to
Special shape setting is crossed, while saving manufacture material, reducing cost, the whole heat dissipation area of fin 16 is increased, mentions
High radiating efficiency, heat dissipation effect are more obvious.
The outer side wall surface of the interconnecting piece 18 is provided with several equally distributed first protrusions 21, the branch portion 19
Outer side wall surface is provided with several equally distributed second protrusions 22, the first protrusion 21 and the second protrusion 22 increase fin 16 with
Extraneous contact area improves heat dissipation effect, while playing the role of similar reinforcing rib, enhances integral strength.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of radiator structure of external rotor electric machine, including stator (1) and rotor (2), it is characterised in that: rotor (2) set
External in stator (1), rotor (2) top is fixedly installed with end cap (3) by several equally distributed first bolts (4),
Rotor (2) top offers the first mounting hole (5) corresponding with the first bolt (4), and end cap (3) surface offers
The first bolt hole (6) corresponding with the first bolt (4), rotor (2) bottom end are provided with the first cooling mechanism, the stator
(1) bottom end is provided with the second cooling mechanism (12).
2. a kind of radiator structure of external rotor electric machine according to claim 1, it is characterised in that: the stator (1) includes
The periphery fixing sleeve of inner cylinder (7), the inner cylinder (7) is equipped with iron core (8), is wound with coil (9) on the iron core (8).
3. a kind of radiator structure of external rotor electric machine according to claim 2, it is characterised in that: first cooling mechanism
Including cooling fin (11), the cooling fin (11) is in the arc of microbend, and rotor (2) bottom end is provided with guide plate (10), institute
It states cooling fin (11) and is provided with multiple groups, multiple groups cooling fin (11) is uniformly arranged on guide plate (10) bottom end, guide plate (10) surface
Offer several ventilation slots.
4. a kind of radiator structure of external rotor electric machine according to claim 3, it is characterised in that: the bottom of the inner cylinder (7)
End extends to below cooling fin (11), and is fixedly connected by several second bolts with the second cooling mechanism (12), the inner cylinder
(7) lower end surface offers the second mounting hole (13) corresponding with the second bolt.
5. a kind of radiator structure of external rotor electric machine according to claim 4, it is characterised in that: the cooling fin (11),
Inner cylinder (7) and the second cooling mechanism (12) are aluminium material.
6. a kind of radiator structure of external rotor electric machine according to claim 5, it is characterised in that: second cooling mechanism
It (12) include several fan-shaped cooling fins (15), described sector cooling fin (15) surface offers corresponding with the second bolt second
Bolt hole (14), the periphery of the sector cooling fin (15) are provided with several equally distributed fins (16), the fan-shaped heat dissipation
Piece (15) surface offers several location holes (17).
7. a kind of radiator structure of external rotor electric machine according to claim 6, it is characterised in that: the fin (16) includes
One end of interconnecting piece (18), the interconnecting piece (18) is connected on fan-shaped cooling fin (15), and the other end is connected with two groups and symmetrically divides
The branch portion (19) of cloth, the branch portion (19) are provided with lug boss (20) far from the one end of interconnecting piece (18).
8. a kind of radiator structure of external rotor electric machine according to claim 7, it is characterised in that: the interconnecting piece (18)
Outer side wall surface is provided with several equally distributed first raised (21), the branch portion (19) if outer side wall surface be provided with
Do equally distributed second raised (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203475.3A CN109742892A (en) | 2019-03-18 | 2019-03-18 | A kind of radiator structure of external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203475.3A CN109742892A (en) | 2019-03-18 | 2019-03-18 | A kind of radiator structure of external rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109742892A true CN109742892A (en) | 2019-05-10 |
Family
ID=66370901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910203475.3A Pending CN109742892A (en) | 2019-03-18 | 2019-03-18 | A kind of radiator structure of external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109742892A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188373A (en) * | 2006-11-24 | 2008-05-28 | 阿斯莫株式会社 | Fan motor |
| CN101494401A (en) * | 2008-01-25 | 2009-07-29 | 台达电子工业股份有限公司 | Motor and fan having dustproof and dissipating heat function |
| CN102340208A (en) * | 2010-07-15 | 2012-02-01 | 建准电机工业股份有限公司 | Motor and cooling fan provided with same |
| CN209375321U (en) * | 2019-03-18 | 2019-09-10 | 开勒环境科技（上海）股份有限公司 | A kind of radiator structure of external rotor electric machine |
-
2019
- 2019-03-18 CN CN201910203475.3A patent/CN109742892A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188373A (en) * | 2006-11-24 | 2008-05-28 | 阿斯莫株式会社 | Fan motor |
| CN101494401A (en) * | 2008-01-25 | 2009-07-29 | 台达电子工业股份有限公司 | Motor and fan having dustproof and dissipating heat function |
| CN102340208A (en) * | 2010-07-15 | 2012-02-01 | 建准电机工业股份有限公司 | Motor and cooling fan provided with same |
| CN209375321U (en) * | 2019-03-18 | 2019-09-10 | 开勒环境科技（上海）股份有限公司 | A kind of radiator structure of external rotor electric machine |
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