CN107317412A - A kind of external rotor electric machine - Google Patents
A kind of external rotor electric machine Download PDFInfo
- Publication number
- CN107317412A CN107317412A CN201710432238.5A CN201710432238A CN107317412A CN 107317412 A CN107317412 A CN 107317412A CN 201710432238 A CN201710432238 A CN 201710432238A CN 107317412 A CN107317412 A CN 107317412A
- Authority
- CN
- China
- Prior art keywords
- inner stator
- casing
- heat conduction
- encapsulated layer
- conduction bar
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of external rotor electric machine, it is made up of outer rotor, inner stator and radiator structure, the outer rotor includes casing, the casing inner wall is provided with magnet steel, and the magnet steel surrounding is enclosed with plastic packaging layer；The modeling seal coat thickness of the magnet steel air gap side is less than 1/3rd of air gap thickness, improves radiating；The casing center is connected with rotating shaft；The inner stator is surrounded by encapsulated layer, by all inner stators one entirety of formation of motor；Improve the radiating of inner stator.The radiator structure includes upper heat conduction bar, heat sink and fin, top connection heat conduction bar, the bottom connection fin of the heat sink；The heat conduction bar is arranged in encapsulated layer, and the space between inner stator described in each two；The present invention improves thermal diffusivity, replaces original paint-dipping process, extends the life-span of Stator and electrical machine.
Description
Technical field
The present invention relates to machine field, and in particular to a kind of inner stator encapsulating structure of external rotor electric machine.
Background technology
Because inner stator, the outer rotor of external rotor electric machine are in the environment of an opposing seal, so radiating is bad, enter
And influence the life-span of motor.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of external rotor electric machine.Using closing outer rotor and inner stator,
And radiator structure is set in inner stator plastic packaging, good heat dissipation has been reached, original inner stator paint-dipping process is may replace, has extended motor
The effect in life-span.
The technical solution used in the present invention is as follows：
A kind of external rotor electric machine, is made up of outer rotor, inner stator and radiator structure,
The outer rotor includes casing, and the casing inner wall is provided with magnet steel, and the magnet steel surrounding is enclosed with plastic packaging layer；The magnetic
The modeling seal coat thickness of steel air gap side is less than 1/3rd of air gap thickness, improves radiating；The casing center is connected with rotating shaft；
The inner stator is surrounded by encapsulated layer, by all inner stators one entirety of formation of motor；Improve the radiating of inner stator.
The radiator structure includes upper heat conduction bar, heat sink and fin, the top connection heat conduction bar of the heat sink, under
Portion connects fin；The heat conduction bar is arranged in encapsulated layer, and the space between inner stator described in each two；
It is preferred that, the top of the encapsulated layer is less than bottom, beneficial to heat conduction and radiating.
It is preferred that, the bottom of the encapsulated layer is the bottom of casing.
Beneficial effect：
1. because inner stator is surrounded by encapsulated layer, by all inner stators one entirety of formation of motor, improve thermal diffusivity.
2. because inner stator is surrounded by encapsulated layer, replace original paint-dipping process.
3. improve thermal diffusivity provided with plastic packaging layer around the magnet steel on outer rotor.
4. the heat conduction bar of radiator structure is arranged on the plastic packaging layer between two inner stators, thermal conductivity is improved, recycles and dissipates
The heat sink and fin of heat structure distribute heat, extend the life-span of Stator and electrical machine.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of the radiator structure 6 of the present invention；
Fig. 3 is outer-rotor structure schematic diagram of the invention.
Embodiment
As shown in Figure 1-2, the inner stator encapsulating structure of a kind of external rotor electric machine, motor is by outer rotor, inner stator 3 and dissipates
Heat structure 6 is constituted, and the outer rotor includes casing 1, and the inwall of casing 1 is provided with magnet steel 2, and the center of casing 1 is connected with
Rotating shaft 4；The surrounding of inner stator 3 is enclosed with encapsulated layer 5, and all inner stators 3 of motor are formed into an entirety；The radiating knot
Structure 6 includes upper heat conduction bar 7, heat sink 8 and fin 9, top connection heat conduction bar 7, the bottom connection fin of the heat sink 8
9, the center of radiator structure 6 is provided with circular hole 10, for installing rotating shaft 4；The heat conduction bar 7 is arranged in encapsulated layer 5, and positioned at every
Space between two inner stators 3.The top of the encapsulated layer 5 is less than bottom, beneficial to radiating.The bottom of the encapsulated layer 5
Portion is the bottom of casing, and both overlap.The encapsulated layer 5 is filling using resin.
As shown in figure 3, the outer rotor includes casing 1, the inwall of casing 1 is provided with magnet steel 2, the week of the magnet steel 2
Enclose provided with plastic packaging layer 11；Plastic packaging 11 thickness of layer of the air gap side of magnet steel 2 are less than 1/3rd of air gap thickness, are conducive to heat
From the discharge of air gap side.
Claims (3)
1. a kind of external rotor electric machine, is made up of outer rotor, inner stator and radiator structure, it is characterised in that：
The outer rotor includes casing, and the casing inner wall is provided with magnet steel, and the magnet steel surrounding is enclosed with plastic packaging layer；The magnetic
The modeling seal coat thickness of steel air gap side is less than 1/3rd of air gap thickness；The casing center is connected with rotating shaft；
The inner stator is surrounded by encapsulated layer, by all inner stators one entirety of formation of motor；
The radiator structure includes upper heat conduction bar, heat sink and fin, and the top connection heat conduction bar of the heat sink, bottom connect
Connect fin；The heat conduction bar is arranged in encapsulated layer, and the space between inner stator described in each two.
2. a kind of external rotor electric machine as claimed in claim 1, it is characterised in that：The top of the encapsulated layer is less than bottom.
3. a kind of external rotor electric machine as claimed in claim 1, it is characterised in that：The bottom of the encapsulated layer is the bottom of casing
Portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710432238.5A CN107317412A (en) | 2017-06-09 | 2017-06-09 | A kind of external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710432238.5A CN107317412A (en) | 2017-06-09 | 2017-06-09 | A kind of external rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107317412A true CN107317412A (en) | 2017-11-03 |
Family
ID=60183737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710432238.5A Pending CN107317412A (en) | 2017-06-09 | 2017-06-09 | A kind of external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317412A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000058594A (en) * | 2000-06-17 | 2000-10-05 | 김용갑 | Ac generator |
| JP2003070208A (en) * | 2001-08-29 | 2003-03-07 | Yaskawa Electric Corp | Ac servomotor |
| WO2006069893A1 (en) * | 2004-12-23 | 2006-07-06 | Siemens Aktiengesellschaft | Electrical machine with cooled end windings of the stator winding |
| CN203206066U (en) * | 2013-03-08 | 2013-09-18 | 珠海格力电器股份有限公司 | Direct-current plastic packaged motor |
| CN203313027U (en) * | 2013-06-14 | 2013-11-27 | 宁波普尔机电制造有限公司 | External motor rotor brushless DC motor for rotary drum washing machine |
-
2017
- 2017-06-09 CN CN201710432238.5A patent/CN107317412A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000058594A (en) * | 2000-06-17 | 2000-10-05 | 김용갑 | Ac generator |
| JP2003070208A (en) * | 2001-08-29 | 2003-03-07 | Yaskawa Electric Corp | Ac servomotor |
| WO2006069893A1 (en) * | 2004-12-23 | 2006-07-06 | Siemens Aktiengesellschaft | Electrical machine with cooled end windings of the stator winding |
| CN203206066U (en) * | 2013-03-08 | 2013-09-18 | 珠海格力电器股份有限公司 | Direct-current plastic packaged motor |
| CN203313027U (en) * | 2013-06-14 | 2013-11-27 | 宁波普尔机电制造有限公司 | External motor rotor brushless DC motor for rotary drum washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171103 |
|
| WD01 | Invention patent application deemed withdrawn after publication |