KR101961615B1 - Electric motors - Google Patents
Electric motors Download PDFInfo
- Publication number
- KR101961615B1 KR101961615B1 KR1020150100611A KR20150100611A KR101961615B1 KR 101961615 B1 KR101961615 B1 KR 101961615B1 KR 1020150100611 A KR1020150100611 A KR 1020150100611A KR 20150100611 A KR20150100611 A KR 20150100611A KR 101961615 B1 KR101961615 B1 KR 101961615B1
- Authority
- KR
- South Korea
- Prior art keywords
- housing
- cooling water
- stator core
- unit
- rotor
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- 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
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A stator core unit fixed to the housing to be disposed in an inner space of the housing, and a rotor unit including a driving magnet for generating a rotating force by an electromagnetic interaction between the stator core unit and the stator core unit And a cooling water flow path through which cooling water flows is formed in the housing.
Description
The present invention relates to an electric motor.
Generally, an electric motor includes a stator having a coil wound thereon and a rotor rotated by an electromagnetic force of the coil.
In addition, the electric motor generates heat due to friction between air and various members during driving. Such a heat lowers the efficiency of the electric motor and shortens the service life of the product.
On the other hand, an AFPM (Axial Flux Permanent Magnet) motor is a type of electric motor, and generally refers to an electric motor in which the main magnetic flux flows parallel to the mechanical axis.
Such an AFPM motor mainly has permanent magnets in the rotor, and a stator in which a coil is wound around the bracket or the housing is disposed.
In addition, conventionally, air cooling type cooling methods for circulating and cooling air by the cooling method of the AFPM motor have been widely used. However, such air cooling type cooling method has a disadvantage in that cooling efficiency is low.
An electric motor capable of improving the cooling efficiency is provided.
An electric motor according to an embodiment of the present invention includes a housing having an inner space, a stator core unit fixed to the housing so as to be disposed in an inner space of the housing, and an electric motor And a cooling water flow path through which cooling water flows may be formed in the housing.
The housing includes first and second housings assembled to form an internal space, the first and second housings including first and second base portions having a disk shape, first and second base portions extending from the first and second bases, Two extension portions may be provided.
The cooling water flow path may have a spiral shape in the first and second base portions.
Wherein the stator core unit includes a stator core formed by assembling a plurality of unit cores, and a coil wound around each of the plurality of unit cores, wherein the plurality of unit cores are fixed to the plurality of unit cores, Holes may be formed.
The housing may have a pinhole corresponding to the fixing hole, and the cooling water channel may be disposed radially inward and outward of the pinhole.
The rotor unit may have a circular plate shape and may include a rotor spider on at least one surface of which the driving magnet is installed along a circumferential direction and a rotating shaft rotated in conjunction with the rotor spider.
The cooling efficiency can be improved.
1 is a schematic sectional view showing an electric motor according to an embodiment of the present invention.
2 is a partially cutaway perspective view showing a housing and a stator core unit of an electric motor according to an embodiment of the present invention.
3 is an explanatory diagram for explaining a flow path provided in a housing of an electric motor according to an embodiment of the present invention.
4 is a perspective view showing a stator core unit of an electric motor according to an embodiment of the present invention.
5 is a perspective view showing a rotor unit of an electric motor according to an embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The shape and size of elements in the drawings may be exaggerated for clarity.
FIG. 1 is a schematic sectional view showing an electric motor according to an embodiment of the present invention, FIG. 2 is a partial cutaway perspective view showing a housing and a stator core unit of an electric motor according to an embodiment of the present invention, FIG. 2 is an explanatory view for explaining a cooling water passage provided in a housing of an electric motor according to an embodiment of the present invention; FIG.
1 to 3, an
The
A cooling
The structure of the
The
On the other hand, the cooling
The first extended
A
The
As described above, the
Here, the term "circumferential direction" refers to the direction of rotation about the
The cooling
Here, the cooling
The
That is, the
As a result, the
The
On the other hand, the plurality of
A plurality of
The
5, the
The
The
Here, various types of bearings may be used as the
As described above, the cooling function can be performed when the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be obvious to those of ordinary skill in the art.
100: Electric motor
120: Housing
140: stator core unit
160: Rotor unit
Claims (6)
A stator core unit fixed to the housing to be disposed in an inner space of the housing; And
A rotor unit having a drive magnet for generating a rotational force by an electromagnetic interaction with the stator core unit;
/ RTI >
The stator core unit
A stator core formed by assembling a plurality of unit cores; And
A coil wound around each of the plurality of unit cores;
And,
A cooling water flow path through which cooling water flows is formed in the housing,
The housing is composed of first and second housings assembled to form an internal space,
The first and second housings include first and second base portions having a disk shape and first and second extending portions extending from the first and second bases,
Wherein the cooling water flow path is formed in a spiral shape in the first and second base portions disposed adjacent to both ends of the stator core,
Wherein the cooling water passage is connected to an inlet through which cooling water flows and an outlet through which cooling water circulated through the cooling water passage is discharged.
Wherein the plurality of unit cores are provided with fixing holes through which fixing pins for fixing to the housing pass.
A pinhole corresponding to the fixing hole is formed in the housing,
And the cooling water flow path is formed so as to be disposed on the inside and outside of the pin hole in the radial direction.
A rotor spider having a circular plate shape, the rotor spider being installed on at least one side of the driving magnet along a circumferential direction; And
A rotating shaft that rotates in conjunction with the rotor spider;
.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150100611A KR101961615B1 (en) | 2015-07-15 | 2015-07-15 | Electric motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150100611A KR101961615B1 (en) | 2015-07-15 | 2015-07-15 | Electric motors |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170010180A KR20170010180A (en) | 2017-01-26 |
KR101961615B1 true KR101961615B1 (en) | 2019-03-26 |
Family
ID=57992835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150100611A KR101961615B1 (en) | 2015-07-15 | 2015-07-15 | Electric motors |
Country Status (1)
Country | Link |
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KR (1) | KR101961615B1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005269845A (en) * | 2004-03-22 | 2005-09-29 | Nissan Motor Co Ltd | Structure for cooling stator of axial gap electric motor |
JP2006174550A (en) * | 2004-12-14 | 2006-06-29 | Nissan Motor Co Ltd | Stator structure of disk-type rotating electric machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100907937B1 (en) | 2007-06-29 | 2009-07-16 | 한국산업기술대학교산학협력단 | Electric motor cooling device |
-
2015
- 2015-07-15 KR KR1020150100611A patent/KR101961615B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005269845A (en) * | 2004-03-22 | 2005-09-29 | Nissan Motor Co Ltd | Structure for cooling stator of axial gap electric motor |
JP2006174550A (en) * | 2004-12-14 | 2006-06-29 | Nissan Motor Co Ltd | Stator structure of disk-type rotating electric machine |
Also Published As
Publication number | Publication date |
---|---|
KR20170010180A (en) | 2017-01-26 |
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