CN209692493U - A kind of electric machine structure - Google Patents

A kind of electric machine structure Download PDF

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Publication number
CN209692493U
CN209692493U CN201920707847.1U CN201920707847U CN209692493U CN 209692493 U CN209692493 U CN 209692493U CN 201920707847 U CN201920707847 U CN 201920707847U CN 209692493 U CN209692493 U CN 209692493U
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China
Prior art keywords
aluminium ring
electric machine
air
machine structure
bearing
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Application number
CN201920707847.1U
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Chinese (zh)
Inventor
吴师年
梁成林
李爱霞
林炎虎
谢绍保
林永
侯文�
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Zhongshan Broad Ocean Motor Co Ltd
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Zhongshan Broad Ocean Motor Co Ltd
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Priority to CN201920707847.1U priority Critical patent/CN209692493U/en
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Abstract

The utility model discloses a kind of electric machine structures, including shaft, cylinder casing, drive end bearing bracket, rear end cap, stator module and cast-aluminum rotor component, drive end bearing bracket and rear end cap are installed respectively and form cavity in centre in the both ends of cylinder casing, cast-aluminum rotor component includes rotor core, upper end aluminium ring, lower end aluminium ring, conductive aluminum strip, the side wall of cylinder casing is that sealing makes cool exterior air cannot pass through cylinder casing to enter cavity, rear end cap is that sealing makes cool exterior air cannot pass through rear end cap to enter cavity, several ventilation holes are set on drive end bearing bracket, axial ventilation air duct is set in rotor core, the upper end aluminium ring axially extends upward M on piece air blade, lower end aluminium ring axially downwardly stretch out air blade under N piece, M and N is integer, and M > N, change the pressure difference at the vent passages of rotor or more two sides, make inside motor Air circulation is generated, so that the air inside motor is carried out effective heat dissipation effect from the outflow of the ventilation hole of drive end bearing bracket, structure is simple.

Description

A kind of electric machine structure
Technical field:
The utility model relates to a kind of electric machine structures.
Background technique:
Existing motor includes cast-aluminum rotor, and cast-aluminum rotor includes rotor core, end ring and conductive bar, in rotor core Between offer axis hole, end ring is mounted on the both ends of rotor core, and the rotor core is equipped with several ventilation holes, conductive bar The end ring at rotor core both ends is electrically connected across rotor core, in order to radiate to motor inside, is turned in cast aluminium The equal and uniformly distributed air blade of quantity is set on sub- both ends end ring end face, and rotor drives air blade synchronous during rotation The hot-air inside stirring motor is operated, so that heat circulation transmitting is distributed, to reach the temperature reduced inside motor The purpose of degree.
But there are limitations for this design, for the electric machine structure and cooling system of different structure, the effect of heat dissipation is poor It is different larger, such as motor includes drive end bearing bracket, casing and rear end cap, drive end bearing bracket and rear end cap are separately mounted to the both ends of casing, preceding End cap is equipped with several through-holes, and rear end cap is end cover, and when rotor rotates, rotor two sides disposed at air vent pressure is suitable, ventilation Two-way pressure is suitable in hole, and differential pressure is not present, causes both ends air that convection current will not occur, cannot effectively radiate.
Utility model content:
The purpose of the utility model is to provide a kind of electric machine structures, and rear end cap and cylinder casing are all close in the prior art for solution When the specific condition lower rotor part rotation of envelope, rotor two sides disposed at air vent pressure is suitable, and two-way pressure is suitable in ventilation hole, is not present The technical issues of differential pressure causes both ends air that convection current will not occur, cannot effectively radiate.
The purpose of this utility model is achieved by following technical proposals.
The purpose of the utility model is to provide a kind of electric machine structure, including it is shaft, cylinder casing, drive end bearing bracket, rear end cap, fixed Sub-component and cast-aluminum rotor component, cast-aluminum rotor component are mounted in shaft, are protruding with first bearing seat among drive end bearing bracket, and first First bearing is installed inside bearing block, second bearing seat is protruding among rear end cap, second bearing is installed inside second bearing seat, Drive end bearing bracket and rear end cap are installed respectively and form cavity, the stator module and cast-aluminum rotor in centre in the both ends of cylinder casing Component is mounted on inside cavity, and cylinder casing is set with outside stator module, is cased with stator module outside cast-aluminum rotor component, Shaft support is mounted in first bearing and second bearing, the cast-aluminum rotor component include rotor core, upper end aluminium ring, under Aluminium ring, conductive aluminum strip are held, upper end aluminium ring, lower end aluminium ring are mounted on the upper surface and lower end surface of rotor core, conductive aluminum strip respectively Upper end aluminium ring and lower end aluminium ring are electrically connected across rotor core, it is characterised in that: the side wall of cylinder casing is sealing, Rear end cap is sealing, several ventilation holes are arranged on drive end bearing bracket, axial ventilation air duct, the upper end is arranged in rotor core Aluminium ring axially extends upward M on piece air blade, and the lower end aluminium ring axially downwardly stretches out air blade under N piece, and M and N are whole Number, and M > N.
Upper end aluminium ring axially extends upward M on piece air blade and is circumferentially uniformly distributed.
Lower end aluminium ring axially downwardly stretches out under N piece air blade circumferentially non-uniform Distribution.
Several lower air blades are divided into several groups, every group of at least 2 lower air blades, and air blade is circumferentially uniform under each group Distribution.
Air blade is staggered certain angle in circumferencial direction under M on piece air blade and N piece.
M>1.5N。
Upper end aluminium ring axially extends upward 8 on piece air blades, and the lower end aluminium ring axially downwardly stretches out 4 lower fan blades Piece.
To form circumference symmetrical with 2 for one for 4 lower air blades.
The drive end bearing bracket is arranged radially several annular dowels and several radial directions centered on first bearing seat from inside to outside Dowel, annular dowel and radially connected muscle intersect to form ventilation hole.
Several installation feet are stretched out in the bottom surface of rear end cap, and installation foot is circumferentially uniformly distributed.
The utility model compared with prior art, has the effect that
1) motor of the utility model includes shaft, cylinder casing, drive end bearing bracket, rear end cap, stator module and cast-aluminum rotor Component, the side wall of cylinder casing are sealings, and rear end cap is sealing, several ventilation holes, rotor core is arranged on drive end bearing bracket Upper setting axial ventilation air duct, the upper end aluminium ring axially extend upward M on piece air blade, the lower end aluminium ring it is axial to Air blade under lower stretching N piece, M and N are integers, and M > N, change pressure difference of the rotor up and down at the vent passages of two sides, make electricity Air circulation is generated inside machine, and the air inside motor is made to carry out effective heat dissipation effect, structure from the outflow of the ventilation hole of drive end bearing bracket Simply;
2) further advantage elaborates in a particular embodiment.
Detailed description of the invention:
Fig. 1 is the perspective view of the utility model motor;
Fig. 2 is another angle perspective view of the utility model motor;
Fig. 3 is the top view of the utility model motor;
Fig. 4 is the cross-sectional view of A-A in Fig. 3;
Fig. 5 is the perspective view of the utility model cast-aluminum rotor;
Fig. 6 is another angle perspective view of the utility model cast-aluminum rotor;
Fig. 7 is the bottom view of the utility model cast-aluminum rotor;
Fig. 8 is the top view of the utility model cast-aluminum rotor;
Fig. 9 is the utility model motor internal gas flow schematic diagram.
Specific embodiment:
The utility model is described in further detail below by specific embodiment and in conjunction with attached drawing.
Embodiment one:
As shown in Figures 1 to 9, provided in this embodiment is a kind of electric machine structure, including shaft 1, cylinder casing 2, front end Lid 3, rear end cap 4, stator module 5 and cast-aluminum rotor component 6, cast-aluminum rotor component 6 are mounted in shaft 1, convex among drive end bearing bracket 3 There is first bearing seat 31 out, first bearing be installed inside first bearing seat 31, second bearing seat 41 is protruding among rear end cap 4, Second bearing is installed, the both ends of cylinder casing 2 install drive end bearing bracket 3 and rear end cap 4 and respectively in centre inside second bearing seat 41 Cavity 20 is formed, the stator module 5 and cast-aluminum rotor component 6 are mounted on 20 the inside of cavity, the outside suit of stator module 5 There is cylinder casing 2, stator module 5 is cased with outside cast-aluminum rotor component 6, the bearing of shaft 1 is mounted on first bearing and second bearing On, the cast-aluminum rotor component 6 includes rotor core 61, upper end aluminium ring 62, lower end aluminium ring 63, conductive aluminum strip, upper end aluminium ring 62, lower end aluminium ring 63 is mounted on the upper surface 611 and lower end surface 612 of rotor core 61 respectively, and conductive aluminum strip passes through rotor core 61 are electrically connected upper end aluminium ring 62 and lower end aluminium ring 63, it is characterised in that: the side wall of cylinder casing 2 be sealing make outside Cold air cannot pass through cylinder casing 2 enter cavity 20, rear end cap 4 be sealing so that cool exterior air is cannot pass through rear end cap 4 Into cavity 20, several ventilation holes 30 are set on drive end bearing bracket 3, axial ventilation air duct 613 is set in rotor core 61, it is described Upper end aluminium ring 62 axially extends upward M on piece air blade 621, and the lower end aluminium ring 63 axially downwardly stretches out air blade under N piece 631, M and N is integer, and M > N, changes pressure difference of the rotor up and down at the vent passages of two sides, makes to generate air inside motor Circulation makes the air inside motor carry out effective heat dissipation effect from the outflow of the ventilation hole of drive end bearing bracket, and structure is simple.
Upper end aluminium ring 62 described above axially extends upward M on piece air blade 621 and is circumferentially uniformly distributed, structure letter It is single, connection and reasonable arrangement.
Lower end aluminium ring 63 described above axially downwardly stretches out under N piece the circumferentially non-uniform Distribution of air blade 631, can be with Change the pressure of ventilating duct, realizes the circulation of motor inner air, effectively radiate.
Several lower air blades 631 described above are divided into several groups, every group of at least 2 lower air blades 631, each group leeward Blade 631 is circumferentially uniformly distributed.
Air blade 631 is staggered certain angle in circumferencial direction under M on piece air blade 621 described above and N piece, Ke Yigai Pressure changeable is poor.
M > 1.5N described above.
Upper end aluminium ring 62 described above axially extends upward 8 on piece air blades 621, the lower end aluminium ring 63 it is axial to 4 lower air blades 631 of lower stretching can effectively change upper and lower pressure difference, flow convenient for air, accelerate heat dissipation.
To form circumference symmetrical with 2 for one for the lower air blade 631 of described above 4.
The drive end bearing bracket 3 is arranged radially 32 He of several annular dowels centered on first bearing seat 31 from inside to outside Several radially connected muscle 33, annular dowel 32 and radially connected muscle 33 intersect to form ventilation hole 30, are good heat dissipation effects, Structure is simple.
Several installation feet 42 are stretched out in the bottom surface of above-mentioned rear end cap 4, and installation foot 42 is circumferential to be uniformly distributed, and install convenient for motor In load.
As shown in figure 9, passing through the simulation of Pressure Simulation software, axial ventilation air duct 613, two sides are set in rotor core 61 Pressure difference at axial ventilation air duct 613 is obvious, larger without the pressure at fan blade;Upper air blade 621 and lower about 631 air blade There is apparent pressure difference to generate, so that air circulation will be generated inside motor, is effectively radiated by the aperture of drive end bearing bracket.
The electric machine structure of the utility model motor equal with lower air blade with traditional upper air blade carries out load temperature rise Contrast test, temperature rise can reduce 6K-8K, be shown in Table 1, obvious using the embodiment of the utility model heat dissipation effect, can be in class Like being promoted on structural electromotor, while according to this scheme thinking, design can be advanced optimized, reach benefit maximum Change.
Table 1
Above embodiments are the better embodiment of the utility model, and however, the embodiments of the present invention are not limited thereto, Made changes, modifications, substitutions, combinations, simplifications under other any spiritual essence and principles without departing from the utility model are Equivalent substitute mode, is included within the protection scope of the utility model.

Claims (10)

1. a kind of electric machine structure, including shaft (1), cylinder casing (2), drive end bearing bracket (3), rear end cap (4), stator module (5) and Cast-aluminum rotor component (6), cast-aluminum rotor component (6) are mounted on shaft (1), are protruding with first bearing seat among drive end bearing bracket (3) (31), first bearing is installed inside first bearing seat (31), is protruding with second bearing seat (41), the second axis among rear end cap (4) It holds and second bearing is installed inside seat (41), the both ends of cylinder casing (2) install drive end bearing bracket (3) and rear end cap (4) and respectively in Between form cavity (20), the stator module (5) and cast-aluminum rotor component (6) are mounted on cavity (20) the inside, stator module (5) it is set with outside cylinder casing (2), is cased with stator module (5) outside cast-aluminum rotor component (6), shaft (1) bearing installation In first bearing and second bearing, the cast-aluminum rotor component (6) include rotor core (61), upper end aluminium ring (62), under Aluminium ring (63), conductive aluminum strip are held, upper end aluminium ring (62), lower end aluminium ring (63) are mounted on the upper surface of rotor core (61) respectively (611) rotor core (61) are passed through and are electrically connected upper end aluminium ring (62) and lower end aluminium ring (63) with lower end surface (612), conductive aluminum strip Get up, it is characterised in that: the side wall of cylinder casing (2) be sealing, rear end cap (4) be sealing, drive end bearing bracket (3) if on be arranged A ventilation hole (30) is done, axial ventilation air duct (613) are set in rotor core (61), the upper end aluminium ring (62) is axially upwards It stretches out M on piece air blade (621), the lower end aluminium ring (63) axially downwardly stretches out air blade (631) under N piece, and M and N are Integer, and M > N.
2. a kind of electric machine structure according to claim 1, it is characterised in that: upper end aluminium ring (62) axially extends upward M piece Upper air blade (621) is circumferentially uniformly distributed.
3. a kind of electric machine structure according to claim 2, it is characterised in that: lower end aluminium ring (63) axially downwardly stretches out N piece Lower air blade (631) circumferentially non-uniform Distribution.
4. a kind of electric machine structure according to claim 3, it is characterised in that: several lower air blades (631) are divided into several groups, Every group of at least 2 lower air blades (631), air blade (631) is circumferentially uniformly distributed under each group.
5. a kind of electric machine structure according to claim 1 or 2 or 3 or 4, it is characterised in that: M on piece air blade (621) and N Air blade (631) is staggered certain angle in circumferencial direction under piece.
6. a kind of electric machine structure according to claim 1 or 2 or 3 or 4, it is characterised in that: M > 1.5N.
7. a kind of electric machine structure according to claim 6, it is characterised in that: upper end aluminium ring (62) axially extends upward 8 Upper air blade (621), the lower end aluminium ring (63) axially downwardly stretch out 4 lower air blades (631).
8. a kind of electric machine structure according to claim 7, it is characterised in that: 4 lower air blades (631) are with 2 for one group It is symmetrical at circumference.
9. a kind of electric machine structure according to claim 1 or 2 or 3 or 4, it is characterised in that: the drive end bearing bracket (3) is with first Centered on bearing block (31), it is arranged radially several annular dowels (32) and several radially connected muscle (33), annular from inside to outside Dowel (32) and radially connected muscle (33) intersect to form ventilation hole (30).
10. a kind of electric machine structure according to claim 1 or 2 or 3 or 4, it is characterised in that: stretch the bottom surface of rear end cap (4) Several installation feet (42) out, installation foot (42) are circumferentially uniformly distributed.
CN201920707847.1U 2019-05-17 2019-05-17 A kind of electric machine structure Active CN209692493U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920707847.1U CN209692493U (en) 2019-05-17 2019-05-17 A kind of electric machine structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920707847.1U CN209692493U (en) 2019-05-17 2019-05-17 A kind of electric machine structure

Publications (1)

Publication Number Publication Date
CN209692493U true CN209692493U (en) 2019-11-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920707847.1U Active CN209692493U (en) 2019-05-17 2019-05-17 A kind of electric machine structure

Country Status (1)

Country Link
CN (1) CN209692493U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113824249A (en) * 2021-09-03 2021-12-21 珠海格力电器股份有限公司 Electric machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113824249A (en) * 2021-09-03 2021-12-21 珠海格力电器股份有限公司 Electric machine
CN113824249B (en) * 2021-09-03 2022-07-26 珠海格力电器股份有限公司 Electric machine

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