CN209730987U - It is configured to the electric motor of external-rotor motor - Google Patents
It is configured to the electric motor of external-rotor motor Download PDFInfo
- Publication number
- CN209730987U CN209730987U CN201920219186.8U CN201920219186U CN209730987U CN 209730987 U CN209730987 U CN 209730987U CN 201920219186 U CN201920219186 U CN 201920219186U CN 209730987 U CN209730987 U CN 209730987U
- Authority
- CN
- China
- Prior art keywords
- rotor cap
- electric motor
- cooling wheel
- cooling
- motor according
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to a kind of electric motor for being configured to external-rotor motor, which is used to increase the power density of electric motor.External-rotor motor includes the rotor cap with the hollow cylindrical of axial end wall, in the internal structure of rotor cap at least one air inlet on axial end wall, wherein on the axial end wall of rotor cap, arrangement has vaned cooling wheel, the cooling wheel rotates together in operation with rotor cap and generates cooling air stream, wherein the cooling wheel has a chopping disk, the chopping disk forms at least two flow channels for being individually used for cooling air stream in the cooling wheel, wherein the first flow channel with chopping disk is equipped at least one air inlet on the axial end wall of rotor cap, and the second flow path of the exterior lateral sides with rotor cap is in flowing junction.
Description
Technical field
The utility model relates to a kind of electric motors for being configured with the cooling external-rotor motor of improvement.
Background technique
In external-rotor motor, the power of electric motor is usually limited by winding temperature.Pass through turning for encapsulation winding
Son cover, is limited in the heat of winding only in ambient enviroment and distributes.Therefore, solution is known, In in the prior art
Cooling air stream is generated by the rotation of rotor cap in the operation of external-rotor motor, it is whole which can cool down motor
Body.
However, for the cooling performance of the Motor Components inside rotor cap, the cooling of the exterior lateral sides of rotor cap is not
Very effectively.
Utility model content
Therefore, it is provided based on the purpose of this utility model: when using identical material, being improved cooling to increase electric motor
Power density, the stator winding rotor cap especially inside rotor cap.
According to the utility model proposes a kind of electric motors for being configured to external-rotor motor comprising have axial end wall
Hollow cylindrical rotor cap, in the internal structure of rotor cap at least one air inlet on axial end wall.In rotor cap
On axial end wall, also arrangement has vaned cooling wheel, which rotates in operation together with rotor cap and generate cold
But air stream.The cooling wheel has a chopping disk, individually uses wherein the chopping disk in the cooling wheel forms at least two
In the flow channel of cooling air stream, wherein the first flow channel with chopping disk is equipped with extremely on the axial end wall of rotor cap
A few air inlet, and the second flow path of the exterior lateral sides with rotor cap are in flowing junction.
According to the utility model proposes a kind of electric motors for being configured to external-rotor motor, including with axial end wall
The rotor cap of hollow cylindrical, in the internal structure of rotor cap at least one air inlet on axial end wall, wherein in rotor cap
Axial end wall on, arrangement has vaned cooling wheel, and the cooling wheel is rotated and generated together in operation with rotor cap
Cooling air stream, wherein the cooling wheel has a chopping disk, the chopping disk forms at least two in the cooling wheel
It is individually used for the flow channel of cooling air stream, wherein axial end wall of the first flow channel with chopping disk in rotor cap
It is equipped at least one air inlet, and the second flow path of the exterior lateral sides with rotor cap is in flowing junction.
Advantageously, cooling wheel has the upper leaf for being formed in the axial suction side that it deviates from rotor cap by multiple blades
Loop, in rotor cap rotation, blade sucks cooling air stream, and wherein the cooling wheel of suction side includes first axis center
Suction inlet and the second suction inlet coaxial with the suction inlet of axial centre, the suction inlet at the first axis center and described
Two are mutually cut with the coaxial suction inlet of the suction inlet of axial centre by chopping disk.
Advantageously, the suction inlet of the axial centre at least one air inlet is on the axial end wall of rotor cap, and
And the exterior lateral sides of coaxial suction inlet and rotor cap are in flowing junction.
Advantageously, multiple blades of upper leaf loop pass through coaxially from the region of the suction inlet of axial centre along chopping disk
The region of suction inlet extends radially outwardly.
Advantageously, the end edge of the multiple blade is extended in the suction inlet of axial centre with arc.
Advantageously, the chopping disk of the cooling wheel is attached on the rotor cap sealed with sealing element, so that at least two flowings
Channel Ground Split sealed against one another.
Advantageously, the cooling wheel has the blade ring that is formed by guide vane, the blade ring dividing disc towards turn
On the downside of son cover.
Advantageously, the blade and the guide vane are configured to curved arc on identical circumferencial direction.
Advantageously, the quantity of the blade is greater than the quantity of the guide vane.
Advantageously, the quantity of the blade is twice of the guide vane quantity.
Advantageously, balance ring is formed in the suction side end edge of blade.
Advantageously, on side of the balance ring towards rotor cap, it is along the circumferential direction above distributed the guidance partition of multiple constructions,
These guidance partitions abut the chopping disk and the guide vane in radial directions.
Advantageously, the cooling wheel is secured directly on the axial end portion edge of rotor bell jar, and the cooling wheel
With the cooling wheel diameter of maximum, the cooling wheel diameter is in the range of ± the 10% of rotor cap outer dia.
Advantageously, the cooling wheel is integrally formed.
Advantageously, the cooling wheel is configured to radial cooling wheel, axial to suck cooling air stream and by two flowings
Channel radial blowout respectively.
By using cooling wheel and two flow channels distinguished by chopping disk are provided, the two flow channels are not
But enters the inside of rotor cap to the exterior lateral sides of hollow cylindrical rotor cap and by the corresponding opening on axial end wall, lead to
Supercooling wheel generates two flow paths.During the operation of electric motor, two cooling air streams are along two flow paths
Flowing, and the motor part being therefore arranged in rotor cap produces internal cooling, is specifically arranged next to adjacent shaft
The cooling heat to export rotor cap in outside to the stator winding of end wall, then in exterior lateral sides.Chopping disk is configured to and diameter
It is suitable to the chassis of impeller, and preferably, from the initial axially substantially then sucking of radially-arranged axial centre
Radially outward arc extends in region.
Preferably, cooling wheel is configured to radial cooling wheel, axial to suck cooling air stream and led to by two flowings
Road radial blowout respectively.
In the Advantageous embodiments for generating cooling air stream, cooling wheel has the axial direction for deviating from rotor cap at it
The upper leaf loop that suction side is formed by multiple blades, in rotor cap rotation, blade sucks cooling air stream.Pass through chopping disk
Cutting, the cooling wheel of suction side include first axis center suction inlet and with the suction inlet of axial centre it is coaxial second sucking
Mouthful.Since suction side, two individual flow channels are distributed along the upper side and lower side of chopping disk, wherein preferably, upside
Flow channel is distributed in rotor cap exterior lateral sides, opposite downside, i.e., towards the axial end wall of flow channel, it is preferable that it is extremely
It is distributed the air inlet of an axial end wall less.It is preferred that at the suction inlet of the axial centre at least one air inlet
In on the axial end wall of rotor cap, and the exterior lateral sides of coaxial suction inlet and rotor cap are in flowing junction.
Preferably, multiple air inlets are set on axial end wall, so that sufficiently large cooling air reaches rotor cap
It is internal.For example, the air inlet being along the circumferential direction distributed in axial end wall for this purpose is introduced into rotor cap.
The improved of electric motor be characterized in that, multiple blades of upper leaf loop are from the region of the suction inlet of axial centre
It is extended radially outwardly along chopping disk by the region of coaxial suction inlet.Therefore, the blade ring formed by blade and two suckings
Mouth directly effectively connection, and at the same time generating two individual cooling air streams.
In addition, a beneficial example scheme of blade is provided in the axially centered suction inlet region of blade
End edge extended in the suction inlet of axial centre with arc.It is generated in the suction inlet of relatively small axial centre sufficiently large
Cooling air stream and at the same time having low noise in terms of, this design scheme is advantageous.
In an advantageous embodiment, the chopping disk of cooling wheel is attached on the rotor cap sealed with sealing element, so that extremely
Few two flow channels are cut sealed against one anotherly.Between chopping disk and the axial end portion edge of rotor cap sealing element setting into
The radial outside of port, so that preventing the mixing and noise shape of two cooling air streams by the chopping disk on axial end portion edge
At exchange.Preferably, chopping disk has the annular groove in the position fixed reception portion for sealing element.
The improvement of the cooling wheel of external-rotor motor is additionally provided with: cooling wheel has the blade ring formed by guide vane, should
Blade ring is on downside of the dividing disc towards rotor cap.The cooling air stream that guide vane guidance axially sucks is radially outward.Stream
It is dynamic that air inlet is directly directed to by dividing disc.Preferably, blade and guide vane are configured to be bent on identical circumferencial direction
Arc, and therefore respectively generate a direction on identical cooling air stream.
Preferably, one embodiment scheme is further that wherein the quantity of suction side blade is greater than the blade of back side construction
Quantity.In particular, the quantity of blade is twice of guide vane quantity.
In another embodiment, balance ring is formed in the suction side end edge of blade, can be installed to balance branch
Frame or similar counterweight.Preferably, radially outward edge of the balance ring around the end edge of the blade of suction side blade ring.
With the axially opposite side in suction side, i.e., on the side towards rotor cap, in improvement project, in balance ring circumferentially side
It is distributed the guidance partition of multiple constructions upwards, these guidance partitions abut chopping disk and guide vane in radial directions.It is preferred that
Ground guides partition radially lineal layout, and shows in axis projection, indicates directing vane of the construction on chopping disk
The radial of piece extends.
In a beneficial example scheme, cooling wheel is directly anchored on the axial end portion edge of rotor bell jar.This
Outside, preferably it has maximum cooling wheel diameter, and the cooling wheel diameter is in the range of ± the 10% of rotor cap outer dia.In
In one beneficial embodiment, the cooling wheel diameter of maximum is 1-10% smaller than rotor cap outer dia.
In order to reduce the quantity of component, constructs integrally formed cooling wheel and be preferably beneficial by constructed in plastic material.
Electric motor according to the present utility model improves the cooling power to increase electric motor when using identical material
Density, the stator winding rotor cap especially inside rotor cap.
Detailed description of the invention
Other beneficial improvement projects of the utility model with reference to the accompanying drawings by below with the preferred embodiment of the utility model
Explanation further show together.In figure:
Fig. 1 be by the sectional view of the embodiment of outer rotor-type motor,
Fig. 2 is the detailed view of the cooling wheel on the rotor cap of Fig. 1,
Fig. 3 is the perspective view of the cooling wheel of Fig. 1,
Fig. 4 is the suction side axial plane figure of the cooling wheel of Fig. 1, and
Fig. 5 is the downside axial plane figure of the cooling wheel of Fig. 1,
Fig. 6 is the preferred geometries distribution of chopping disk.
Specific embodiment
Fig. 1 to Fig. 5 shows the embodiment for being configured to the electric motor of external-rotor motor 1, wherein stator winding 7
It is located in the stator bushing 15 in hollow cylindrical rotor cap 12.Rotor cap 12 is closed by electric motor protection cap 11, this turn
Sub- cover arrangement opens wide for axially end side, but is covered with roll guard 14.Ventilation passes through the roll guard 14 and may inhale
Enter cooling air stream.Bearing arrangement and electric motor protection to the feature unrelated with the utility model, such as stator bushing 15
The fastening of lid 11 will not be discussed in greater detail, they in Fig. 1 by clearly providing.
On the axial end wall 41 of rotor cap 12, integral type cooling wheel 10 is directly fixed by rivet 35.However, it can also
To be connect in another way with rotor cap 12, for example, being pressed in the shaft end portion of motor drive shaft 75.
The embodiment for the cooling wheel 10 being fastened on rotor cap 12 is shown specifically in Fig. 3 into Fig. 5.Cooling wheel 10 is designed
Radially impeller and sucking air axial in operation is then radial blows out them.Cooling wheel 10 includes the leaf grating of suction side
Ring, the leaf grating ring have multiple circumferentially disposed and arc-shaped bend blade 16, the blade 16 on chopping disk 22 from
The suction inlet 18 of axial centre extends radially outwardly.Chopping disk 22 is same outward the suction inlet 18 and radial level of axial centre
The suction inlet 17 of axis distinguishes, and the outside coaxial suction inlet 17 of the radial level is formed by the section between blade 16.In axial direction
In the region of the suction inlet 18 at center, blade 16 axially has arc distribution at end edge 21.Blade 16 passes through cutting
Disk 22 enter axial centre suction inlet 18, such as in the sucking side plan view of Fig. 4 it may be clearly seen that.
At the suction side end edge of blade 16, balance ring 27 is located in radially section.It is cooling for equilibrium
The balancing component (not shown) of wheel 10 and rotor cap 12 can be fixed in balance ring 27.(cooling wheel 10 is being shown referring to Fig. 5
Opposite rear side) in it can be seen that being configured in balance ring 27 radially to abut chopping disk 22 and along the circumferential direction be distributed
It is oriented to partition 24.In addition, construct multiple guide vanes 29 on chopping disk 22, they with corresponding leaf on axially opposite side
Piece 16 is bent to arc on same circumferencial direction.In contrast, guiding partition 24 not instead of arc-shaped bend extends, it is radial to
Outer linear extension.They are stretched in the circumferentially extending of guide vane 29.
Referring again to Fig. 1, two individually flowings are specified on two axial side in the chopping disk 22 in cooling wheel 10
Channel, for generating two individual cooling air stream S1 and S2.The axial end wall 41 of rotor cap 12 has in a circumferential direction
Multiple air inlets 9 of distribution.The suction inlet 18 of axial centre is stretched over the back side of cooling wheel 10, similarly, gives in the back side
The axial centre outlet 30 of subordinate out, cooling air stream S1 is radially outward stretched from the outlet.Cooling air stream S1 passes through axial direction
The suction inlet 18 at center sucks, and then the cooling air stream is conducted directly to air inlet through guide vane 19 along chopping disk 22 from outlet
Mouth 9, at air inlet, cooling air stream encounters stator winding 7, and then stator winding 7 is directly cooling by forced convertion.
In addition, chopping disk has groove 36 in its radially outer edge, wherein insertion sealing element is to cut two flowings
Channel and cooling air stream S1 and S2.Second cooling air stream S2 is by the axial sucking of coaxial suction inlet 18, then in suction side
It is guided by the exterior lateral sides 40 for radially outward arriving rotor cap 12 directed along chopping disk 22, at this, it is derived 12 heat of rotor cap
Amount.
Therefore, for the flow channel of the first cooling air stream S1 formed from the suction inlet 18 of axial centre to outlet 30,
The downside of chopping disk 22 and guide vane 29 are until air inlet 9.For the second cooling air stream S2 flow channel formed by
Blade 16 passes through coaxial suction inlet 17 until the radial outer end of cooling wheel 10 along the upside of chopping disk 22.
Chopping disk 22 have geometry shape special shape, with ensure the suction inlet 18 of axial centre and ensure its two
On a axial direction side the guiding surface for two cooling air streams S1 and S2 that is arranged radially outward, but in two different zones
In.This is shown in FIG. 6, wherein having radius r1* in the region of suction inlet 18, the radius ra* of chopping disk is adjacent at its
Transitional region in there is axially and radially component, and there is rb* in radially section, wherein radial distribution gradually becomes
For axial distribution.And the axial height h* of radial segment is zero, that is, decreases up to axial end wall 41.Maximum radius is true by r2*
It is fixed.Chopping disk 22 is determined in nondimensional coordinate (x, y) by function as described below:
In the solid line region of ra*:
If
If
In the dashdotted radial segment of h*:
Y=h*/(h*+ra*) is if (ra*+r1*)/r2* < x < (r2*-h*)/r2*
In the radially side region of the dotted line of rb*:
If
If
Claims (15)
1. a kind of electric motor for being configured to external-rotor motor, which is characterized in that including the hollow cylindrical with axial end wall
Rotor cap, in the internal structure of rotor cap at least one air inlet on axial end wall, wherein in the axial end wall of rotor cap
On, arrangement has vaned cooling wheel, and the cooling wheel rotates together in operation with rotor cap and generate cooling air stream,
Wherein the cooling wheel has a chopping disk, and the chopping disk forms at least two individually for cold in the cooling wheel
But the flow channel of air stream, wherein the first flow channel with chopping disk is equipped at least one on the axial end wall of rotor cap
A air inlet, and the second flow path of the exterior lateral sides with rotor cap is in flowing junction.
2. electric motor according to claim 1, which is characterized in that cooling wheel has the axis for deviating from rotor cap at it
The upper leaf loop formed to suction side by multiple blades, in rotor cap rotation, blade sucks cooling air stream, and wherein
The cooling wheel of suction side includes the suction inlet and the second suction inlet coaxial with the suction inlet of axial centre at first axis center, institute
State first axis center suction inlet and described second with the coaxial suction inlet of the suction inlet of axial centre by chopping disk it is mutual
Cutting.
3. electric motor according to claim 2, which is characterized in that the suction of the axial centre at least one air inlet
Entrance is on the axial end wall of rotor cap, and the exterior lateral sides of coaxial suction inlet and rotor cap are in flowing junction
In.
4. electric motor according to claim 2 or 3, which is characterized in that multiple blades of upper leaf loop are from axial direction
The region of the suction inlet of the heart is extended radially outwardly along chopping disk by the region of coaxial suction inlet.
5. electric motor according to claim 2, which is characterized in that the end edge of the multiple blade is extended with arc
Into the suction inlet of axial centre.
6. electric motor according to claim 1, which is characterized in that the chopping disk of the cooling wheel is attached to close with sealing element
On the rotor cap of envelope, so that at least two flow channels Ground Split sealed against one another.
7. electric motor according to claim 1, which is characterized in that the cooling wheel has the leaf formed by guide vane
Loop, the blade ring is on downside of the dividing disc towards rotor cap.
8. electric motor according to claim 7, which is characterized in that the blade and the guide vane are in identical circle
Curved arc is configured in circumferential direction.
9. electric motor according to claim 7 or 8, which is characterized in that the quantity of the blade is greater than the directing vane
The quantity of piece.
10. electric motor according to claim 7, which is characterized in that the quantity of the blade is the directing vane the piece number
Twice of amount.
11. electric motor according to claim 7, which is characterized in that balance ring is formed in the suction side end edge of blade
On edge.
12. electric motor according to claim 11, which is characterized in that on side of the balance ring towards rotor cap, edge
The guidance partition of multiple constructions is distributed on circumferencial direction, these guidance partitions abut the chopping disk and described in radial directions
Guide vane.
13. electric motor according to claim 1, which is characterized in that the cooling wheel is secured directly rotor bell jar
Axial end portion edge on, and the cooling wheel has maximum cooling wheel diameter, and the cooling wheel diameter is straight outside rotor cap
In the range of ± the 10% of diameter.
14. electric motor according to claim 1, which is characterized in that the cooling wheel is integrally formed.
15. electric motor according to claim 1, which is characterized in that the cooling wheel is configured to radial cooling wheel, axial
Suck cooling air stream and by the radial blowout respectively of two flow channels.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019101471.9A DE102019101471A1 (en) | 2019-01-22 | 2019-01-22 | External rotor motor with cooling wheel |
| DE102019101471.9 | 2019-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209730987U true CN209730987U (en) | 2019-12-03 |
Family
ID=68683509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920219186.8U Active CN209730987U (en) | 2019-01-22 | 2019-02-21 | It is configured to the electric motor of external-rotor motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209730987U (en) |
| DE (1) | DE102019101471A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141089A (en) * | 2020-01-16 | 2021-07-20 | 依必安派特穆尔芬根有限两合公司 | Ventilator with external rotor motor |
| CN114541078A (en) * | 2022-02-24 | 2022-05-27 | 冯聪亚 | Closed drying and dewatering washing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08191554A (en) * | 1995-01-09 | 1996-07-23 | Kokusan Denki Co Ltd | Outer rotor type dc induction motor with cooling fan |
| JPH10210727A (en) * | 1997-01-17 | 1998-08-07 | Nippon Electric Ind Co Ltd | Cooling fan mechanism of outer rotor brushless motor |
| JP3906572B2 (en) * | 1998-07-31 | 2007-04-18 | 松下電器産業株式会社 | Motor with self-cooling fan |
| JP6260291B2 (en) * | 2014-01-20 | 2018-01-17 | 日本電産株式会社 | motor |
-
2019
- 2019-01-22 DE DE102019101471.9A patent/DE102019101471A1/en active Pending
- 2019-02-21 CN CN201920219186.8U patent/CN209730987U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141089A (en) * | 2020-01-16 | 2021-07-20 | 依必安派特穆尔芬根有限两合公司 | Ventilator with external rotor motor |
| CN113141089B (en) * | 2020-01-16 | 2024-05-31 | 依必安派特穆尔芬根有限两合公司 | Ventilator with external rotor motor |
| CN114541078A (en) * | 2022-02-24 | 2022-05-27 | 冯聪亚 | Closed drying and dewatering washing machine |
| CN114541078B (en) * | 2022-02-24 | 2023-09-19 | 冯聪亚 | Enclosed drying and dewatering washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019101471A1 (en) | 2020-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11686314B2 (en) | Fan motor | |
| CN101105188B (en) | Suction cleaner blower | |
| JP6155544B2 (en) | Centrifugal fan | |
| US9131814B2 (en) | Electric blower and electric cleaner using same | |
| EP3639717A2 (en) | Fan motor | |
| TWI454619B (en) | Air supply fan | |
| US6386839B1 (en) | High performance radiator fan | |
| US20160186771A1 (en) | Rotor hub assembly, electric fan | |
| JP3562763B2 (en) | In-line pump | |
| CN209730987U (en) | It is configured to the electric motor of external-rotor motor | |
| CN110073540A (en) | Thermostat unit, humidity control system and vehicle | |
| TW201711349A (en) | Power mechanism for unmanned aerial vehicle and motor thereof capable of blocking sand and dust from entering a hollow body and preventing a stator from being contaminated by the sand and dust | |
| TWI723518B (en) | Electric vacuum cleaner with electric blower | |
| US10418883B2 (en) | Cover assembly and motor | |
| JP2018071551A (en) | Centrifugal fan | |
| KR102425457B1 (en) | A Fan Motor | |
| JP5124197B2 (en) | Electric blower | |
| JP6451756B2 (en) | Centrifugal fan | |
| JP2020193602A (en) | Blower and cleaner | |
| JP2009197593A (en) | Fan device | |
| CN214304426U (en) | Centrifugal fan and electric product | |
| CN210738913U (en) | Fan wheel | |
| CN218293943U (en) | Wind wheel and air conditioner | |
| CN212225567U (en) | Air duct system component and fixed impeller thereof | |
| CN220435089U (en) | Impeller and inflator pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |