CN110752689A - Radiating fin type outer rotor motor and stratospheric airship - Google Patents
Radiating fin type outer rotor motor and stratospheric airship Download PDFInfo
- Publication number
- CN110752689A CN110752689A CN201911188085.XA CN201911188085A CN110752689A CN 110752689 A CN110752689 A CN 110752689A CN 201911188085 A CN201911188085 A CN 201911188085A CN 110752689 A CN110752689 A CN 110752689A
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- cover plate
- outer rotor
- inner stator
- external rotor
- shaft
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- 230000003014 reinforcing effect Effects 0.000 claims description 25
- 238000004804 winding Methods 0.000 claims description 10
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims description 8
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 8
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 6
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000005347 demagnetization Effects 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 4
- 239000005437 stratosphere Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
-
- 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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
-
- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to the field of heat dissipation of an airship and provides a radiating fin type outer rotor motor and a stratospheric airship, wherein the radiating fin type outer rotor motor comprises an inner stator assembly, an outer rotor assembly, an inner stator fixing device and an outer rotor supporting device; the outer rotor assembly comprises an outer rotor, permanent magnet blocks arranged on the inner surface of the outer rotor, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively fixed at two ends of the outer rotor along the axial direction, and the outer rotor, the first cover plate and the second cover plate form a cavity and surround the inner stator assembly; the first cover plate is connected with the outer rotor supporting device; the outer surface of the outer rotor is in a radiating fin shape, or the outer rotor component further comprises a radiating fin which is fixed on the outer surface of the outer rotor; the inner stator fixing device is connected with the inner stator assembly. The invention is beneficial to the radiation of the heat of the permanent magnet blocks to the outer air deep cooling position by increasing the area of the outer surface of the outer rotor, and prevents the demagnetization failure of the permanent magnet blocks.
Description
Technical Field
The invention relates to the field of motor heat dissipation, in particular to a motor device of a stratospheric airship.
Background
The stratospheric airship flies in the stratospheric environment, and the flowing heat dissipation effect of air is poor due to the thin air. The traditional motor heat dissipation method generally needs to add a fan and an air duct to improve the air flow heat dissipation efficiency, but the weight and the energy consumption are increased, and the complexity of the system is improved.
At present, the developed stratospheric airship propulsion motor mostly adopts a permanent magnet inner rotor mode, and heat of an inner rotor permanent magnet of the motor is accumulated in a closed motor stator cavity after being heated, so that the heat is difficult to be led out, and the temperature of the inner rotor is high. The highest working temperature of the sintered Nd-Fe-B permanent magnet is 150 ℃, and when the highest temperature of the Nd-Fe-B permanent magnet exceeds 150 ℃, the motor loses power due to demagnetization.
The heat dissipation of the motor of the propulsion system of the stratospheric airship is an urgent problem to be solved.
The statements in the background section are merely prior art as they are known to the inventors and do not, of course, represent prior art in the field.
Disclosure of Invention
Aiming at the problem of heat dissipation of a stratospheric airship motor in the prior art, the invention aims to provide a heat dissipation sheet type outer rotor motor, which comprises the following components: the inner stator assembly, the outer rotor assembly, the inner stator fixing device and the outer rotor supporting device;
the outer rotor assembly comprises an outer rotor, permanent magnet blocks arranged on the inner surface of the outer rotor, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively fixed at two ends of the outer rotor along the axial direction, and the outer rotor, the first cover plate and the second cover plate form a cavity and surround the inner stator assembly; the first cover plate is connected with the outer rotor supporting device; the outer surface of the outer rotor is in a radiating fin shape, or the outer rotor component further comprises a radiating fin which is fixed on the outer surface of the outer rotor;
the inner stator fixing device is connected with the inner stator assembly.
According to the radiating fin type outer rotor motor provided by the invention, the external radiation area of the outer surface of the outer rotor is increased, and the permanent magnet blocks directly radiate heat to the outer air deep cooling position through the outer surface of the outer rotor, so that the radiating efficiency of the permanent magnet blocks is improved.
Further, the inner stator assembly includes an inner stator and an inner stator slot winding disposed on the inner stator.
Further, the inner stator fixing device comprises an inner stator shaft fixing support frame, an inner stator shaft and an inner stator shaft bearing, the inner stator shaft penetrates through the center of the second cover plate and is connected with the inner stator shaft fixing support frame and the inner stator assembly, and the inner stator shaft bearing is arranged on the inner stator shaft and is fixed on the second cover plate.
Furthermore, the inner stator shaft bearing adopts a centripetal thrust bearing. The radial thrust bearing can simultaneously bear radial force and axial force with a large range, and is suitable for an airship motor needing the axial force. When the motor rotates, the inner ring of the inner stator shaft bearing and the inner stator shaft are fixed, and the outer ring of the inner stator shaft bearing rotates along with the second cover plate.
Furthermore, the outer rotor supporting device comprises an outer rotor shaft fixing support frame, an outer rotor shaft and an outer rotor shaft bearing, the outer rotor shaft is fixed at the center of the first cover plate and connected with the first cover plate and the outer rotor shaft fixing support frame, and the outer rotor shaft bearing is arranged on the outer rotor shaft and fixed on the outer rotor shaft fixing support frame.
Further, the outer rotor shaft bearing is a radial thrust bearing. The radial thrust bearing can simultaneously bear radial force and axial force with a large range, and is suitable for an airship motor needing the axial force. The inner ring of the outer rotor shaft bearing is fixedly connected with the outer rotor shaft, the outer ring of the outer rotor shaft bearing is fixedly connected with the outer rotor shaft fixing support frame, when the motor rotates, the inner ring of the outer rotor shaft bearing and the outer rotor shaft rotate along with the first cover plate, and the outer ring of the outer rotor shaft bearing and the outer rotor shaft fixing support frame are fixed.
Further, the first cover plate and the outer rotor shaft are integrally formed.
Furthermore, the first cover plate and the second cover plate are fans with blades, the first cover plate and the second cover plate rotate along with the outer rotor to form airflow in a fixed direction, and the airflow enters the cavity through the first cover plate and is discharged out of the cavity through the second cover plate. Two cover plates of the outer rotor are arranged in a fan mode with blades, one surface of each cover plate sucks cooling air along with the rotation of the outer rotor of the motor, and the other surface of each cover plate discharges hot air in the cavity, so that air is forced to convect, and a heat dissipation effect is achieved.
Further, the first cover plate comprises outer ring fan blades, middle ring reinforcing ribs and inner ring fan blades; the middle ring reinforcing ribs are arranged between the outer ring fan blades and the inner ring fan blades. The middle ring reinforcing ribs are used for enhancing the mechanical strength and rigidity of the first cover plate.
Further, the second cover plate comprises outer ring fan blades, middle ring reinforcing ribs, inner ring fan blades, inner ring reinforcing ribs and shaft holes; the shaft hole is arranged at the center of the second cover plate; the inner ring reinforcing ribs are arranged between the inner ring fan blades and the shaft hole, and the middle ring reinforcing ribs are arranged between the outer ring fan blades and the inner ring fan blades. The inner ring reinforcing ribs and the middle ring reinforcing ribs are used for enhancing the mechanical strength and rigidity of the second cover plate.
Furthermore, the permanent magnet blocks adopt neodymium iron boron permanent magnet blocks or samarium cobalt permanent magnet blocks.
Furthermore, samarium cobalt permanent magnet blocks are adopted as the permanent magnet blocks.
The maximum magnetic energy product of the Nd-Fe-B permanent magnet is 260BHmax/(kj/m2) But its maximum working temperature is only 150 ℃; the maximum magnetic energy product of samarium cobalt permanent magnet is reduced to 200BHmax/(kj/m2) But the maximum working temperature can reach 300 ℃, so that the motor can work under severer environmental conditions.
The invention also provides a stratospheric airship which comprises the radiating fin type outer rotor motor.
The invention has the beneficial effects that:
the invention aims at the motor of the stratospheric airship in an outer-air cryogenic environment, the outer surface of the outer rotor of the motor is arranged into a radiating fin shape or the outer surface of the outer rotor is provided with the radiating fin, so that the area of heat radiation of the outer rotor to an outer space is increased, the heat radiation of permanent magnet blocks on the outer rotor is facilitated, and the demagnetization of the permanent magnet blocks is prevented.
The invention also sets the cover plates at the two sides of the outer rotor as fans to cool the inner cavity of the outer rotor and the electromagnetic winding of the inner stator by forced air, greatly improves the thermal environment of the inner cavity of the outer rotor and the electromagnetic winding of the inner stator, and is beneficial to the heat dissipation of the permanent magnet blocks on the outer rotor.
The permanent magnet iron block made of samarium cobalt can bear higher maximum working temperature which reaches 300 ℃, so that the motor can work under severer thermal environment conditions.
Through the improvement, the invention obviously improves the adaptability of the motor to continuous work in the stratosphere environment and avoids the phenomenon of demagnetization loss caused by high heat of permanent magnet blocks in the motor when the motor works in the stratosphere environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural view of a fin type outer rotor motor according to a first embodiment;
fig. 2 is a longitudinal sectional view of outer rotor 7 of the first embodiment, in which only an upper structure symmetrical to a lower portion thereof is shown;
fig. 3 is a schematic structural view of the first cover plate 11;
fig. 4 is a schematic structural view of the second cover plate 4;
fig. 5 is a schematic structural view of a fin type outer rotor motor according to a second embodiment;
fig. 6 is a longitudinal sectional view of outer rotor 7 and heat radiating fins 13 of the second embodiment, in which only an upper structure symmetrical with a lower portion thereof is shown;
the fan comprises a main shaft, an inner stator, an outer rotor, an inner stator shaft, an outer rotor shaft, an inner rotor shaft bearing, a first cover plate, an inner stator shaft fixing support frame, a second cover plate, an inner stator tooth groove winding, a permanent magnet block, a 7 outer rotor, an outer rotor shaft fixing support frame, a rotor shaft bearing, a first cover plate, a second cover plate, a stator, a heat radiating fin, a fan blade, a 15 shaft hole, a middle ring reinforcing rib, a 17 inner ring fan blade, an inner ring reinforcing rib, a 18 inner ring reinforcing rib, a fan blade, a 20 middle ring reinforcing rib.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection, either mechanically, electrically, or in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As a first embodiment of the present invention, there is shown a fin type outer rotor motor including: the inner stator assembly, the outer rotor assembly, the inner stator fixing device and the outer rotor supporting device.
As shown in fig. 1, the inner stator assembly includes an inner stator 12 and an inner stator slot winding 5 fixed to the inner stator.
As shown in fig. 1, the outer rotor assembly includes permanent magnet blocks 6, an outer rotor 7, a first cover plate 11 and a second cover plate 4, the first cover plate 11 and the second cover plate 4 are respectively fixed at both ends of the outer rotor 7 in the axial direction, the outer rotor 7, the first cover plate 11 and the second cover plate 4 form a cavity and surround the inner stator 12 and the inner stator slot winding 5. As can be seen from fig. 2, the outer surface of outer rotor 7 is provided in the shape of a fin, where the hatched portion represents a cross section of outer rotor 7, and the outer surface of outer rotor 7 is seen in the shape of a fin from the cross section. The permanent magnet 6 is arranged on the inner surface of the outer rotor 7 corresponding to the internal stator tooth space winding 5, the permanent magnet 6 can be neodymium iron boron permanent magnet or samarium cobalt permanent magnet, preferably samarium cobalt permanent magnet, and the maximum working temperature of the samarium cobalt permanent magnet is 300 ℃.
As a preferred embodiment, as shown in fig. 3, the first cover plate 11 is a fan with blades, and the specific structure includes an outer ring blade 19, a middle ring rib 20 and an inner ring blade 21, and the middle ring rib 20 is disposed between the outer ring blade 19 and the inner ring blade 21 for enhancing the mechanical strength and rigidity of the first cover plate 11. As shown in fig. 4, the second cover plate 4 is a fan with blades, and the specific structure includes an outer ring fan blade 14, a middle ring reinforcing rib 16, an inner ring fan blade 17, an inner ring reinforcing rib 18 and a shaft hole 15; the shaft hole 15 is arranged at the center of the second cover plate 4, the inner stator shaft 2 of the inner stator fixing device penetrates through the shaft hole 15 to fix the inner stator 12, and the outer ring of the inner stator shaft bearing 3 on the inner stator shaft 2 is fixed with the shaft hole 15; the inner ring reinforcing ribs 18 are arranged between the inner ring fan blades 17 and the shaft hole 15, the middle ring reinforcing ribs 16 are arranged between the outer ring fan blades 14 and the inner ring fan blades 17, and the inner ring reinforcing ribs 18 and the middle ring reinforcing ribs 16 are used for enhancing the mechanical strength and rigidity of the second cover plate 4.
As shown in fig. 1, the inner stator fixing device for fixing an inner stator assembly includes an inner stator shaft fixing support frame 1, an inner stator shaft 2 and an inner stator shaft bearing 3, wherein the inner stator shaft 2 passes through a shaft hole 15 at the center of a second cover plate 4 and is connected with the inner stator shaft fixing support frame 1 and an inner stator 12; the inner stator shaft bearing 3 adopts a centripetal thrust bearing, the inner ring of the inner stator shaft bearing 3 is fixed on the inner stator shaft 2, and the outer ring of the inner stator shaft bearing 3 is fixed with the shaft hole 15 of the second cover plate 4.
As shown in fig. 1, the outer rotor supporting device is used for supporting the rotation of the outer rotor assembly, and includes an outer rotor shaft fixing support frame 8, an outer rotor shaft 9 and an outer rotor shaft bearing 10, the outer rotor shaft 9 is fixed at the center of a first cover plate 11, and is connected with the first cover plate 11 and the outer rotor shaft fixing support frame 8, the outer rotor shaft 9 and the first cover plate 11 can be integrally formed or detachably connected, the outer rotor shaft bearing 10 adopts a radial thrust bearing, the inner ring of the outer rotor shaft bearing 10 is fixed on the outer rotor shaft 9, and the outer ring of the outer rotor shaft bearing 10 is fixed on the outer rotor shaft fixing support frame 8.
Under the action of the permanent magnet 6 and the inner stator tooth groove assembly 5, the inner stator 12 is fixed under the action of the inner stator shaft 2 and the inner stator shaft fixing support frame 1, and the outer rotor 7 rotates around the inner stator 12 and drives the first cover plate 11, the second cover plate 4 and the outer rotor shaft 9 to rotate. The permanent magnet blocks 6 and the inner stator tooth groove windings 5 generate heat in the rotating process of the outer rotor 7, the permanent magnet blocks 6 transmit the heat to the outer rotor 7, and the outer surface of the outer rotor 7 is in the shape of cooling fins, so that the heat can be rapidly radiated to an outer air deep cooling position. Meanwhile, the first cover plate 11 sucks cold air W1 in the rotating process, the cold air W1 enters a cavity formed by the outer rotor 7, the first cover plate 11 and the second cover plate 4, the permanent magnet 6, the inner stator 12 and the inner stator tooth space winding 5 are cooled, and the cold air W1 forms hot air W2 after heat exchange; the hot air W2 is discharged out of the chamber by the second cover plate 4, thereby forming an air flow pattern with strong exhaust cooling. By the mode, the adaptability of the motor to continuously work in the stratosphere environment is obviously improved, and the phenomenon of demagnetization loss caused by high heat of permanent magnet blocks in the motor working in the stratosphere environment is avoided.
As a second embodiment of the present invention, a fin type outer rotor motor is shown, and the structure of the outer rotor motor of the second embodiment is basically the same as that of the first embodiment, except that: as shown in fig. 5, the fin type outer rotor motor further includes fins 13 fixed to an outer surface of the outer rotor 7. As shown in fig. 6, outer rotor 7 has a cylindrical structure, and the hatched portion inclined to the left in the drawing indicates a cross section of outer rotor 7; the radiating fins 13 are cylindrical radiators, the hatched portions inclined to the right in the drawing indicate the cross sections of the radiating fins 13, the inner rings of the radiating fins 13 are directly sleeved on the outer rings of the outer rotor 7, and compared with the process of directly processing the outer surfaces of the outer rotor 7 into the shapes of the radiating fins in the first embodiment, the processing difficulty can be reduced by using the cylindrical radiators. The radiating fins 13 increase the area of the outer surface of the outer rotor 7, the permanent magnet blocks 6 generate heat in the rotating process, the heat is transferred to the radiating fins 13 through the outer rotor 7, and the radiating fins 13 radiate the heat to the deep outside.
As a third embodiment of the present invention, a stratospheric airship including the fin type outer rotor motor of the first or second embodiment is shown.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A fin type external rotor motor, comprising: the inner stator assembly, the outer rotor assembly, the inner stator fixing device and the outer rotor supporting device;
the outer rotor assembly comprises an outer rotor, permanent magnet blocks arranged on the inner surface of the outer rotor, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively fixed at two ends of the outer rotor along the axial direction, and the outer rotor, the first cover plate and the second cover plate form a cavity and surround the inner stator assembly; the first cover plate is connected with the outer rotor supporting device; the outer surface of the outer rotor is in a radiating fin shape, or the outer rotor component further comprises a radiating fin which is fixed on the outer surface of the outer rotor;
the inner stator fixing device is connected with the inner stator assembly.
2. The fin type external rotor motor according to claim 1, wherein the inner stator assembly includes an inner stator and an inner stator slot winding provided on the inner stator.
3. The fin type external rotor motor according to claim 1, wherein the inner stator fixing means includes an inner stator shaft fixing support frame, an inner stator shaft passing through a center of the second cover plate and connecting the inner stator shaft fixing support frame and the inner stator assembly, and an inner stator shaft bearing provided on the inner stator shaft and fixed on the second cover plate.
4. The finned external rotor electric machine according to claim 3, wherein the internal stator shaft bearing is a radial thrust bearing.
5. The fin type external rotor electric machine according to claim 1, wherein the external rotor supporting means includes an external rotor shaft fixing support frame, an external rotor shaft, and an external rotor shaft bearing, the external rotor shaft is fixed at the center of the first cover plate, connecting the first cover plate and the external rotor shaft fixing support frame, and the external rotor shaft bearing is disposed on the external rotor shaft and fixed on the external rotor shaft fixing support frame.
6. The finned external rotor electric machine according to claim 5, wherein the external rotor shaft bearing is a radial thrust bearing.
7. The fin type external rotor motor according to claim 5, wherein the first cover plate and the external rotor shaft are integrally formed.
8. The finned external rotor electric machine according to claim 1, wherein the first cover plate and the second cover plate are fans with blades, the first cover plate and the second cover plate rotate with the external rotor to form airflow in a fixed direction, and the airflow enters the chamber from the first cover plate and exits the chamber through the second cover plate.
9. The finned external rotor electric machine according to claim 8, wherein the first cover plate includes outer ring fan blades, middle ring reinforcing ribs and inner ring fan blades; the middle ring reinforcing ribs are arranged between the outer ring fan blades and the inner ring fan blades.
10. The fin-type external rotor electric machine according to claim 8, wherein the second cover plate includes outer ring fan blades, middle ring reinforcing ribs, inner ring fan blades, inner ring reinforcing ribs, and shaft holes; the shaft hole is arranged at the center of the second cover plate; the inner ring reinforcing ribs are arranged between the inner ring fan blades and the shaft hole, and the middle ring reinforcing ribs are arranged between the outer ring fan blades and the inner ring fan blades.
11. The fin-type external rotor motor according to claim 1, wherein the permanent magnet blocks are neodymium iron boron permanent magnet blocks or samarium cobalt permanent magnet blocks.
12. A stratospheric airship comprising the fin type outer rotor motor according to any one of claims 1 to 11.
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CN201911188085.XA CN110752689A (en) | 2019-11-28 | 2019-11-28 | Radiating fin type outer rotor motor and stratospheric airship |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113911311A (en) * | 2021-10-19 | 2022-01-11 | 北京空天高科技有限公司 | Propeller-linked driving device shafting and stratospheric airship |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113911311A (en) * | 2021-10-19 | 2022-01-11 | 北京空天高科技有限公司 | Propeller-linked driving device shafting and stratospheric airship |
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