CN207664813U - A kind of totally enclosed motor and its air-cooled impeller and the electric vehicle for using the motor - Google Patents
A kind of totally enclosed motor and its air-cooled impeller and the electric vehicle for using the motor Download PDFInfo
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- CN207664813U CN207664813U CN201721352581.0U CN201721352581U CN207664813U CN 207664813 U CN207664813 U CN 207664813U CN 201721352581 U CN201721352581 U CN 201721352581U CN 207664813 U CN207664813 U CN 207664813U
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Abstract
A kind of totally enclosed motor, including：Engine base；It is fixed on the end cap of the stator and axial two ends of covering engine base of engine base inner cavity；It is fixed on the rotor of shaft, shaft is supported on end cap through bearing；Rotor, stator respectively have axial ventilation road；Turn, air gap is not less than 0.25mm between stator；Fan impeller one rated pressure is relatively low and flow is larger by two rotated with rotor coaxial in engine base inner cavity, its import covers the opening of rotor axial ventilating duct left end, it exports the opening towards stator shaft orientation ventilating duct left end, another rated pressure is higher and flow is smaller, its import meet to turn, between stator air gap left end opening, opening of the outlet towards stator shaft orientation ventilating duct left end.The design is substantially reduced motor temperature, especially p-m rotor Wen Sheng.The air-cooled impeller used in the motor integrally combines two fan impellers, facilitates production and repair.Using the electric vehicle of the motor due to motor improved cooling loss of weight, more batteries can be installed and extend the full charge range of driving.
Description
Technical field
The present invention relates to a kind of totally enclosed motor more particularly to its cooling structure, IPC classification belongs to H02K9/06.
Background technology
The traditional design of totally enclosed motor cooling structure is visible《Design of electrical motor》(the old generation of Xi'an Communications University is female, machinery
Industrial publishing house's nineteen eighty-two Beijing the 1st edition), cooling effect turns the lower motor of temperature of rotor limit value, such as permanent magnetism
Sub- motor owes ideal.
Term of the present invention and common knowledge are also shown national standard and professional standard GB/T 2900.25《Electrician
Term electric rotating machine》、GB/T 19075《Industrial ventilation machine vocabulary and type definition》、JB/T 2977《Wind turbine and Roots blower
Term》、JB/T 10562《General service propeller fan technical conditions》With JB/T 10563《General service centrifugal fan skill
Art condition》And《Ventilation blower》(Huazhong Institute of Technology Li Qing is suitable, China Machine Press the 1st edition, Beijing in 1981),《Electrical engineering
Handbook》With《Mechanical engineering manual》.
Invention content
The technical problem to be solved by the present invention is to propose that a kind of totally enclosed motor, cooling system are set than tradition
Meter is substantially reduced Wen Sheng, the especially Wen Sheng of rotor of motor, and relatively simple for structure, and reliability is preferably and energy consumption is relatively low.
The technical solution that the present invention solves the technical problem is a kind of totally enclosed motor, including：
--- engine base；
--- it is fixed on the end cap of the stator and axial two ends of covering engine base of engine base inner cavity；
--- it is fixed on the rotor of shaft, shaft is supported on end cap through bearing；
It is characterized in that：
A) rotor, stator respectively have axial ventilation road；
B) turn, gas length is not less than 0.25mm between stator；
C) further include two fan impellers rotated in engine base inner cavity and rotor coaxial, and two impeller：
--- one rated pressure is relatively low and flow is larger, and import covers the opening of rotor axial ventilating duct left end,
Opening of the outlet towards stator shaft orientation ventilating duct left end；
--- another rated pressure is higher and flow is smaller, import meet to turn, between stator air gap left end opening, go out
Mouth leads to the opening of stator shaft orientation ventilating duct left end.
When the motor operation, the impeller generates the circulating current of following below scheme in engine base inner cavity：
1, opening --- rated pressure relatively low and the larger impeller of flow --- stator axis of rotor axial ventilating duct left end
To ventilating duct --- the opening of rotor axial ventilating duct right end；
2, between stator and rotor air gap left end opening --- rated pressure higher and the smaller impeller of flow --- stator shaft orientation
Ventilating duct --- the opening of air gap right end between stator and rotor.
The two impellers rated value is adapted to the drag characteristic of respective flow, can get preferable flow efficiency and cooling effect.
One of modular design of the technical solution is：
--- the rated pressure is relatively low and the larger impeller of flow is axial-flow type, has around blade and same with shaft
The import of the air duct of the rotary surface shape of axis, the air duct is close to rotor left end and makes even with rotor outer circle；The busbar of the surfaces of revolution
The segmental arc of engine base inner circle or the connection of line segment or segmental arc and line segment are bent towards to increase with radius since the rotor left end.
--- the rated pressure is higher and the smaller impeller of flow is centrifugal, using the air duct as hub disk, before
Disk is not more than 8mm in entrance at a distance from hub disk, and then the distance of front and back disk expands along sprue direction.
The modular design of the technical solution second is that：
--- the rated pressure is relatively low and the larger impeller of flow is centrifugal, and hub disk is tightly placed in shaft, shroud
Import be close to rotor left end and make even with rotor axial ventilating duct most outer；Shroud takes the surfaces of revolution shape coaxial with the shaft
Shape, the busbar of the surfaces of revolution are the segmental arc or line segment or arc for increasing and bending towards engine base inner circle since the rotor left end with radius of turn
The connection of section and line segment.
--- the rated pressure is higher and the smaller impeller of flow is centrifugal, and rotor left end is close in the import of hub disk
And make even with rotor outer circle, shroud is not more than 8mm in entrance at a distance from hub disk, and later, the distance of front and back disk is along mainstream
Road direction expands.
Rated pressure in the two of design is relatively low and the shroud and rated pressure of the larger impeller of flow are higher and flow compared with
The hub disk of small impeller may be designed as one, and the one section is in " people " font along sprue direction, can avoid cross section of fluid channel
Energy loss jumpy, more compact structure.
Above-mentioned technical proposal is further designed to：
--- the rated pressure is higher and the smaller impeller of flow uses Forword vane, can get higher pressure, with
The resistance for overcoming air gap runner larger；In addition the number of blade is preferably equivalent at least 30, can be conducive to obtain higher pressure；
--- the rated pressure is relatively low and the larger impeller of flow uses backward inclined blade, can get higher efficiency, with
Just power consumption is saved when rotor axial ventilating duct generates larger flow；In addition the number of blade is preferably no more than 30, makes operating point
There is higher efficiency；
--- the receded disk impeller that the rated pressure is higher and flow is smaller mutually meets place towards winding direction with stator winding
Stretch out blade.Impeller rotate when, these blades can agitation air brush stator winding left part, be allowed to cooling；
--- the axially extended blade of rotor right-hand end ring.When impeller rotates, these blades can agitation air brush it is fixed
Sub- winding right part, is allowed to cooling；
--- the rotor cylinder surface is fabricated to big screw pitch multiple thread, and screw thread is to left-handed by the specified steering of motor
Into.When motor rotates, which will reinforce the cooling air-flow of air gap channel and dramatically increases surface heat transfer area；
--- the end cap or/and inboard wall of base have shape and the relevant radiating ribs of airflow direction, to increase heat exchange
Area and surface coefficient of heat transfer；
--- water cooling is implemented in the shell setting circulating water flow channel of the engine base；
--- above-mentioned two impeller is fabricated to whole double leaf wheel assembly, to facilitate production and repair.
The air-cooled impeller of the one used in the electronic electric motor of the technical program, which is characterized in that including：
--- axle sleeve (91), for being coaxially anchored on the shaft on the left of the rotor；
--- it is in coaxially the 1st disk (92), the 2nd disk (93) and the 3rd disk of rotary surface shape around axle sleeve (91)
(94), it arranges from left to right；
--- the 1st disk (92) couples axle sleeve (91)；The 1st centrifugal blade (95) is in the 1st disk (92) and the 2nd disk
(93) couple with the two between, the 2nd blade (96) couples between the 2nd disk (93) and the 3rd disk (94) with the two；
--- the end internal diameter of the 2nd disk (93) right end (98) is most not less than each axial ventilation road left end opening of the rotor
Diameter of a circle where outer, waist stretch out to the right the guide ring (97) of coaxial rotary surface shape；The end of guide ring (97) right end
End is concordant with the at the end of the axial of the 2nd disk (93) right end (98), and outer diameter is equal to or slightly less than the outside diameter of the rotor (12)；
The width that 3rd disk (94) right end is formed by opening (973) on the outside of guide ring (97) is not more than 8mm.
The very convenient manufacture of air-cooled impeller and installation of the one, and cost is relatively low.
Using the electric vehicle of above-mentioned technical proposal motor, mitigates weight because motor cooling effect improves, can use
Significantly extend the full charge range of driving in the more batteries of installation.
Technical solution of the present invention and its modular design will further illustrate in a specific embodiment.
Description of the drawings
Fig. 1 is 1 electric motor structure main cross-sectional schematic diagram of the embodiment of the present invention.
Fig. 2 is 1 motor bilobed wheel modular construction main cross-sectional schematic diagram of the embodiment of the present invention.
Fig. 3 is 1 motor right end cap left view schematic diagram of the embodiment of the present invention.
Fig. 4 is 2 electric motor structure main cross-sectional schematic diagram of the embodiment of the present invention.
Specific implementation mode
1 motor of the embodiment of the present invention is similar to such as《Design of electrical motor》Enclosed motor traditional structure shown in middle Fig. 8-3
On the basis of improve, as shown in Figure 1.The design that the motor continues to use traditional structure includes：
--- engine base 5；
--- the end cap 71,72 at 5 axial two ends of covering engine base；
--- it is fixed on the stator 10 of 5 inner cavity of engine base, stator 10 includes stator core 101 and stator winding 102；
--- be fixed on the rotor 12 of shaft 6, rotor 12 include rotor core 3 and positioned at secondly end for compress iron core or
And conductive end ring 4, shaft 6 are supported on end cap 71,72 through bearing；
--- the outer circle of rotor 12 and between the iron core inner circle of stator 10 have air gap 32.
Design is changed：
--- the structure for cancelling original machine seat external air cooling system is changed to the shell setting water-cooling sandwich 8 of engine base 5, with pipe fitting
(not shown) is connected to the outer water circulation system of machine；
--- a plurality of axial ventilation road 21 is formed between 5 inner cylinder of engine base and the iron core outer cylinder of stator 10；
--- rotor 12 is p-m rotor, and a plurality of axial ventilation road 31 is arranged in iron core 3；
--- it is 0.5~3mm (preferably 1mm) that gas length, which increases,；
--- rotor core outer round surface machines depth about 1~3mm, about 1/4 rotor length of screw pitch, triangle or trapezoidal
Multiple thread, and by the specified steering of motor be precession to the left；
--- the radiating ribs 15 of 72 inner surface of end cap processing protrusion, and by the specified steering of motor with bearing hole outer circle
Direction of the tangent line as muscle, as shown in Figure 3；
--- the axially extended internal fan blade 121 of 12 right end of rotor retains, but the interior wind that 12 left end of rotor is axially extended
Fan leaf is cancelled, and the whole double leaf wheel assembly 9 of installation is changed to.
The more detailed situation of structure of double leaf wheel assembly 9 is further shown in Fig. 2~Fig. 4, is described as follows：
--- double leaf wheel assembly 9 includes axle sleeve 91, the 1st disk 92, the 2nd disk 93, the 3rd disk 94, the 1st blade the 95, the 2nd
Blade 96 and the 1st guide ring 97；
--- 91 main body of axle sleeve is cylindrical shape, is anchored on shaft 6, and the two is coaxial in axis 1.1st end face 911 of axle sleeve 91
Towards the 71, the 2nd end face 912 of left side end cap towards rotor core 3；
--- the 1st disk 92, the 2nd disk 93 and the 3rd disk 94 are the rotation planar with axis 1 for axis, between according to
It is secondary to be spaced and coupled by the 1st blade 95 and the 2nd blade 96.
--- the 1st disk 92 is fixed at the left side 911 of axle sleeve 91, and busbar is since the 1st end face 911 of axle sleeve 91
Radius of turn increases, first vertical with axis 1, is then tilted to 71 direction of left end cap, then vertical with axis 1；
--- the busbar of the 2nd disk 93 is and axis 1 first since 12 left end axial direction ventilating duct of rotor, 31 most outer
Parallel-segment 98, then radius of turn increase so that being tilted to engine base inner circle, latter end is through a bit of arc transition, then develops into and axis
Line 1 is vertical；
--- guide ring 97 is that coaxial and outer diameter is straight equal to or slightly less than (within difference 3mm) 12 outer circles of rotor with rotor 12
The cylindrical shape of diameter, the waist of the left end of coupled rotor 12 and the 2nd disk 93.93 waist connection place of guide ring 97 and the 2nd disk
Section streamwise be in " people " font；
--- the busbar of the 3rd disk 94 is open from 32 left end of air gap and no more than at rotor outer circle radius 8mm (preferably 5mm)
Start radius of turn to increase along camber line and tilt towards engine base inner circle, latter end develops into vertical with axis 1.
1st blade, 95 number of blade is 16~24, and exit installation angle is 30 °~60 °, and blade is wider shorter, and as rear
The 1st receded disk impeller that 1st disk 92 of disk and the 2nd disk 93 as shroud are constituted, with lower rated pressure and
Larger metered flow, certain driving air-flow are circulated along stator shaft orientation ventilating duct 21 and rotor axial ventilating duct 31, can cut
The larger rotor axial ventilating duct 31 in face generates larger flow fully to take away the calorific value of rotor.
2nd blade, 96 number of blade is 35~55, and exit installation angle is 110 °~150 °, and blade is relatively narrow longer, with conduct
2nd disk 93 of hub disk and the 3rd disk 94 as shroud constitute the 2nd receded disk impeller, with higher rated pressure and
Smaller metered flow, certain driving air-flow air gap 32 and rotor axial ventilating duct 31 between stator and rotor circulate, can be in section
Smaller air gap channel keeps high flow velocities with effectively cooling rotor surface, for preventing p-m rotor high temperature loss of excitation from having important work
With.
In addition, the blade of the 2nd blade 96 protrudes from except the 2nd disk 93 and the 3rd disk 94 and close to 102 end of stator winding
Portion, the protrusion stir the air of 102 end perimeter of winding when impeller rotates, and are cooled down to end.
The air-flow of above-mentioned two circulation canal is cooled down when flowing through shell especially stator shaft orientation ventilating duct 21 by engine base 5,
Engine base 5 is then water cooled the cooling of interlayer 8.
Experiment shows the full-enclosed permanent-magnet motor for electric vehicle for 100KW or so, the rated value of above-mentioned two impeller
It can be adapted to the drag characteristic of respective flow, reach higher flow efficiency.
By above-mentioned design, 97 outer circumference surface of guide ring meets to be not more than 8mm (preferably 5mm) the wide the 2nd with 94 phase of the 3rd disk
The import 973 of receded disk impeller.The transition that it is about 6mm wide that the outer circumference surface of guide ring 97 is mutually met with the inner peripheral surface of stator winding
Channel 974.Air gap 32, transition passage 974 and import 973 are along airflow direction successively substantially to just.Experiment shows that the design is reduced
The flow losses that relatively narrow 32 eluting gas of air gap acutely expands.
2 motor of the embodiment of the present invention is as shown in figure 4, the difference of itself and embodiment 1 is mainly by the in former embodiment 1
1 disk 92 and blade 95 are cancelled, and are changed to be fixed on axle sleeve 91 with axial--flow blading 99 and are constituted aial flow impeller, and with the 2nd disk
As air duct, the outer rim of axial--flow blading 99 is fixedly connected the 2nd disk inner wall.Double leaf wheel assembly 9 ' thus become aial flow impeller
And the combination of the 2nd receded disk impeller.By can analogy size, aial flow impeller can in greater flow and more compared to receded disk impeller
There is higher efficiency in the operating point of low-pressure, is especially suitable for having the relatively high power in larger cross-section stator and rotor axial ventilation road electronic
The case where machine.
The present embodiment can have following design to change：
--- engine base still maintains《Design of electrical motor》Enclosed motor tradition exogenous wind air-cooled structure, is not provided with shown in middle Fig. 8-3
Implement water cooling in circulating water flow channel；
--- stator and rotor ventilating duct shapes axial convex ribs, to increase heat exchange area；
--- guide ring 97 can also need to be changed to radius of turn along the widened truncated cone-shaped in sprue direction in response to structure,
But small nose circle shape invariance；
--- during the specified duty pressure is higher and smaller relatively low with the pressure and flow same motor of larger category of flow
The comparison of two impeller characteristics, concrete numerical value need to specifically be designed in response to flow where two impellers in same motor；
--- structure need to take into account pneumatic efficiency, heat exchanger effectiveness, stability and manufacture economy to runner everywhere, pass through experiment
Or hydrodynamics method, select more appropriate section or/and surface shape.
Above example expresses the more specific and detailed several embodiments of the present invention, but cannot therefore be understood to
Limitation to scope of patent protection of the present invention.Those of ordinary skill in the art are done in the case that not departing from basic idea of the present invention
The modification and improvement gone out, especially those, which belong to, changes the equivalent feature of bad invention and belongs to protection scope of the present invention.
Claims (13)
1. a kind of totally enclosed motor, including：
--- engine base；
--- it is fixed on the end cap of the stator and axial two ends of covering engine base of engine base inner cavity；
--- it is fixed on the rotor of shaft, shaft is supported on end cap through bearing；
It is characterized in that：
A) rotor and stator respectively have axial ventilation road；
B) turn, gas length is not less than 0.25mm between stator；
C) further include two fan impellers rotated in engine base inner cavity and rotor coaxial, and two impeller：
--- one rated pressure is relatively low and flow is larger, and import covers the opening of rotor axial ventilating duct left end, outlet
Towards the opening of stator shaft orientation ventilating duct left end；
--- another rated pressure is higher and flow is smaller, import meet to turn, between stator air gap left end opening, outlet is logical
Toward the opening of stator shaft orientation ventilating duct left end.
2. according to motor described in claim 1, it is characterised in that：
--- the rated pressure is relatively low and the larger impeller of flow is axial-flow type, has around blade and coaxial with shaft
The import of the air duct of rotary surface shape, the air duct is close to rotor left end and makes even with rotor outer circle；The busbar of the surfaces of revolution is certainly
Rotor left end starts to increase with radius of turn and bend towards the segmental arc of engine base inner circle or the connection of line segment or segmental arc and line segment；
--- the rated pressure is higher and the smaller impeller of flow is centrifugal, using the air duct as hub disk, shroud in
Entrance is not more than 5mm at a distance from hub disk, and then the distance of front and back disk is gradually expanded along sprue direction.
3. according to motor described in claim 1, it is characterised in that：
--- the rated pressure is relatively low and the larger impeller of flow is centrifugal, and hub disk is tightly placed in shaft, shroud into
It tight-lipped patch rotor left end and makes even with rotor axial ventilating duct most outer；Shroud takes the rotary surface shape coaxial with the shaft,
The busbar of the surfaces of revolution is the segmental arc or line segment or segmental arc for increasing and bending towards engine base inner circle since the rotor left end with radius of turn
With the connection of line segment；
--- the rated pressure is higher and the smaller impeller of flow be it is centrifugal, the import of hub disk be close to rotor left end and with
Rotor outer circle is made even, and shroud is not more than 8mm in entrance at a distance from hub disk, and later, the distance of front and back disk is along sprue side
To expansion.
4. according to motor described in claim 3, it is characterised in that：Rated pressure is relatively low and the shroud of the larger impeller of flow and
The higher hub disk with the smaller impeller of flow of rated pressure is integrated, and the section of the one is in " people " word along sprue direction
Shape.
5. according to motor described in claim 3, it is characterised in that：The rated pressure is relatively low and the larger centrifugal leaf of flow
Wheel uses backward inclined blade, the number of blade to be not more than 30.
6. according to motor described in claim 2 or claim 3, it is characterised in that：The rated pressure is higher and flow compared with
Small receded disk impeller uses Forword vane, the number of blade to be no less than 30.
7. according to motor described in claim 2 or claim 3, it is characterised in that：The rated pressure is higher and flow compared with
Small receded disk impeller mutually meets place with stator winding and stretches out blade towards winding direction.
8. according to motor described in claim 1 or claim 2 or claim 3, it is characterised in that：The rotor right-hand end
The axially extended blade of ring.
9. according to any one of Claims 1 to 5 motor, it is characterised in that：The rotor cylinder surface is fabricated to big screw pitch
Multiple thread, and screw thread is precession to the left by the specified steering of motor.
10. according to any one of Claims 1 to 5 motor, it is characterised in that：The end cap or/and inboard wall of base have
The shape radiating ribs consistent with airflow direction.
11. according to any one of Claims 1 to 5 motor, it is characterised in that：Circulating water flow is arranged in the shell of the engine base
Channel.
12. the air-cooled impeller used in a kind of motor as claimed in claim 4, which is characterized in that including：
--- axle sleeve (91), for being coaxially anchored on the shaft on the left of the rotor；
--- it is coaxially surround the 1st disk (92), the 2nd disk (93) and the 3rd disk (94) that axle sleeve (91) is in rotary surface shape,
It arranges from left to right；
--- the 1st disk (92) couples axle sleeve (91)；The 1st centrifugal blade (95) is in the 1st disk (92) and the 2nd disk (93)
Between couple with the two, the 2nd blade (96) couples between the 2nd disk (93) and the 3rd disk (94) with the two；
--- the end internal diameter of the 2nd disk (93) right end (98) is not less than each axial ventilation road left end opening of the rotor most outer
Place diameter of a circle, waist stretch out to the right the guide ring (97) of coaxial rotary surface shape；The end of guide ring (97) right end with
The at the end of the axial of 2nd disk (93) right end (98) is concordant, and outer diameter is equal to or slightly less than the outside diameter of the rotor (12)；3rd
The width that disk (94) right end is formed by import (973) on the outside of guide ring (97) is not more than 8mm.
13. a kind of electric vehicle, it is characterised in that：It uses any one of Claims 1 to 55 motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721352581.0U CN207664813U (en) | 2017-10-18 | 2017-10-18 | A kind of totally enclosed motor and its air-cooled impeller and the electric vehicle for using the motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721352581.0U CN207664813U (en) | 2017-10-18 | 2017-10-18 | A kind of totally enclosed motor and its air-cooled impeller and the electric vehicle for using the motor |
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| Publication Number | Publication Date |
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| CN207664813U true CN207664813U (en) | 2018-07-27 |
Family
ID=62938353
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| CN201721352581.0U Active CN207664813U (en) | 2017-10-18 | 2017-10-18 | A kind of totally enclosed motor and its air-cooled impeller and the electric vehicle for using the motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681830A (en) * | 2017-10-18 | 2018-02-09 | 江门市地尔汉宇电器股份有限公司 | A kind of totally enclosed motor and its air-cooled impeller and the electric car using the motor |
| CN110729834A (en) * | 2019-11-15 | 2020-01-24 | 合肥巨一动力系统有限公司 | Air-cooled rotor structure of permanent magnet synchronous motor |
-
2017
- 2017-10-18 CN CN201721352581.0U patent/CN207664813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681830A (en) * | 2017-10-18 | 2018-02-09 | 江门市地尔汉宇电器股份有限公司 | A kind of totally enclosed motor and its air-cooled impeller and the electric car using the motor |
| CN110729834A (en) * | 2019-11-15 | 2020-01-24 | 合肥巨一动力系统有限公司 | Air-cooled rotor structure of permanent magnet synchronous motor |
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| GR01 | Patent grant | ||
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Address after: 529040 No. 336 Qinglan Road, Jiangmen High-tech Development Zone, Guangdong Province Patentee after: Hanyu Group Co., Ltd. Address before: 529040 No. 336 Qinglan Road, Jiangmen High-tech Development Zone, Jiangmen City, Guangdong Province Patentee before: Jiangmen Idear-hanyu Electrical Joint-stock Co., Ltd. |
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