CN218526151U - Outer rotor permanent magnet motor for industrial fan - Google Patents
Outer rotor permanent magnet motor for industrial fan Download PDFInfo
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- CN218526151U CN218526151U CN202222381201.3U CN202222381201U CN218526151U CN 218526151 U CN218526151 U CN 218526151U CN 202222381201 U CN202222381201 U CN 202222381201U CN 218526151 U CN218526151 U CN 218526151U
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- end cover
- assembly
- heat dissipation
- permanent magnet
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Abstract
The utility model discloses an outer rotor permanent-magnet machine for industrial fan, include: the stator assembly at least comprises a stator core and a winding coil, and heat dissipation holes are formed in the axial direction of the stator core; the rotor assembly and the stator iron core form an axial circulation gap; the end cover component is connected with the rotor component and is provided with a convex rib; the rotating shaft assembly axially penetrates through the stator assembly, is connected with the stator assembly and is rotationally connected with the end cover assembly; a radial flow gap is formed between the end cover assembly and the stator assembly; axial circulation clearance, radial circulation clearance and louvre intercommunication form heat dissipation channel, and when the end cover subassembly drove the protruding muscle and rotate, gaseous circulation is in order to realize the cooling in the heat dissipation channel. The utility model forms a heat dissipation channel inside the motor, the convex ribs can stir gas by rotating, thereby increasing the gas flowing speed and realizing the effect of cooling the inside of the motor; the heat dissipation ribs increase the contact area between the lower end cover and the air, improve the heat dissipation efficiency and accelerate the cooling of the motor.
Description
Technical Field
The utility model belongs to the technical field of the motor, especially, relate to an outer rotor permanent-magnet machine for industrial fan.
Background
The large industrial fan is also called as an HVLS fan (High-Vo ume Low-Speed large air volume, low air Speed), a large energy-saving fan or a large industrial ceiling fan, and is arranged at a High place in space, a driving system drives large fan blades to slowly rotate at a certain angle so as to realize large-scale air flow, and a large amount of air flow is pushed to continuously flow to the ground from top to bottom and flows and diffuses along the periphery of the horizontal direction so as to generate continuous and three-dimensional breeze effects, thereby realizing the functions of natural ventilation, human body cooling, dehumidification and the like.
The traditional asynchronous industrial fan consists of a three-phase asynchronous motor and a gear reduction box, and has the problems of heavy equipment, low transmission efficiency, high temperature rise, small output torque, high noise, periodic maintenance, high maintenance cost and the like. At present, in the existing outer rotor industrial fan permanent magnet motor, a permanent magnet is generally directly pasted on the inner circular surface of a shell, the reliability is poor, and the magnetic steel is often dropped due to the failure of high-temperature super glue, so that the industrial fan is in failure; the industrial fan also adopts hoist and mount mostly, because of lacking anti-disengaging structure or unreasonable, the fixed mode who adds huge flabellum is not good enough, causes the risk that the flabellum falls even the motor easily, takes place the incident.
The existing motor for the industrial fan does not have a heat dissipation function, and is easy to generate a situation of local overheating after being used for a long time, so that the normal use of the industrial fan is adversely affected.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a can dispel the heat to motor inside, guarantee the long-time normal use of industrial fan external rotor permanent-magnet machine for industrial fan.
The utility model provides a technical scheme that its technical problem adopted is: an outer rotor permanent magnet motor for an industrial fan, comprising:
the stator assembly at least comprises a stator core and a winding coil, and heat dissipation holes are formed in the stator core in the axial direction;
the rotor assembly and the stator iron core form an axial circulation gap;
the end cover component is connected with the rotor component and is provided with a convex rib;
the rotating shaft assembly axially penetrates through the stator assembly, is connected with the stator assembly and is rotationally connected with the end cover assembly;
a radial flow gap is formed between the end cover assembly and the stator assembly;
the axial circulation gap, the radial circulation gap and the heat dissipation holes are communicated to form a heat dissipation channel, and when the end cover assembly drives the convex ribs to rotate, gas circulates in the heat dissipation channel in a circulating mode to achieve cooling.
The utility model forms a heat dissipation channel inside the motor, the convex ribs can stir gas by rotating, and the gas flowing speed is increased, so that the gas in the heat dissipation channel circulates, and the effect of cooling the inside of the motor is realized; the weight of the motor is greatly reduced due to the arrangement of the heat dissipation holes.
Furthermore, the end cover assembly comprises an upper end cover and a lower end cover which are respectively connected with the rotor assembly, and a plurality of convex ribs are arranged on one side surface of the end cover assembly in opposite directions. All set up a plurality of protruding muscle in upper end cover and the opposite one side of lower extreme cover, increase the stirring dynamics to gaseous in the heat dissipation channel, gaseous circulation in the heat dissipation channel with higher speed.
Furthermore, the convex ribs are radially and uniformly distributed at intervals along the circumferential direction. The convex ribs can not only accelerate the circulation of gas in the heat dissipation channel, but also increase the structural strength of the upper end cover and the lower end cover.
Furthermore, the surface of lower end cover is radial evenly spaced along circumference and has laid a plurality of heat dissipation muscle, and the inner of a plurality of heat dissipation muscle encloses and establishes and form the gathering chamber, and the air current in this gathering chamber can be followed adjacent heat dissipation muscle the clearance, along radial outside flow. The heat dissipation ribs increase the contact area between the lower end cover and the air, and improve the heat dissipation efficiency. And it is radial and evenly spaced to lay, can form the diverging form structure of centrifugal fan blade, when the motor rotates, the air in the gathering intracavity blows outwards radially under the centrifugal force effect, still can flow to the rotor core surface upwards simultaneously, the cooling of the acceleration motor.
Further, the rotor subassembly includes rotor core and magnet steel, rotor core's inner circle is equipped with a plurality of magnetic steel grooves, is equipped with the blend stop between the adjacent magnetic steel groove. The stop strip can offset the tangential force that the magnet steel received when the rotor subassembly rotated, makes the magnet steel can not exceed the limit of glue adhesion force and drop because of the moment of torsion is too big.
Furthermore, a plurality of mounting holes are formed in the upper end cover, and the connecting piece can be connected with the fan blades after penetrating out of the mounting holes. The connecting piece is convenient for the erection joint of motor and flabellum, avoids dust or water droplet etc. to get into stator module simultaneously, guarantees the effective use of motor.
Further, the end cover assembly is an aluminum casting. The weight of the motor can be reduced, and the use risk is reduced.
Furthermore, the rotating shaft assembly comprises a main shaft which is respectively rotatably connected with the upper end cover and the lower end cover through bearings, and the upper end of the main shaft penetrates out of the upper end cover and is connected with a coupler. The shaft coupling can hang extension rod size according to the customer and realize the customization, and hoist and mount adaptability is high.
Further, the upper end cover and the lower end cover respectively form a bearing installation chamber, and a reinforcing member is arranged in the bearing installation chamber; the upper end cover is formed with a removal hole. The reinforcing member can improve the strength of the bearing installation chamber, prevent the bearing from being damaged and prolong the service life of the bearing; the disassembly hole is convenient for the disassembly of the end cover, and reduces the damage to the rotor core when the end cover is disassembled.
Further, the outer wall of the coupler forms an anti-drop ring. The anti-drop ring plays the role of anti-drop protection of the industrial fan.
The beneficial effects of the utility model are that: a heat dissipation channel is formed in the motor, the convex ribs rotate to stir gas and increase the gas flowing speed, so that the gas in the heat dissipation channel circulates, and the effect of cooling the interior of the motor is realized; the heat dissipation ribs increase the contact area between the lower end cover and air, improve the heat dissipation efficiency, and when the motor rotates, the air in the collection cavity is blown outwards along the radial direction under the action of centrifugal force and also flows upwards to the surface of the rotor iron core, so that the cooling of the motor is accelerated; the weight of the motor is greatly reduced due to the arrangement of the heat dissipation holes; the safety in use is high, and installation adaptability is good.
Drawings
Fig. 1 is a first perspective view of the present invention.
Fig. 2 is a second perspective view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
Fig. 4 is a partial sectional view of the present invention.
Fig. 5 is a perspective view of the middle lower end cap of the present invention.
Fig. 6 is a perspective view of the middle coupling of the present invention.
Fig. 7 is a partial schematic view of the rotor core according to the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, an outer rotor permanent magnet motor for an industrial fan includes a stator assembly 1, a rotor assembly 2, an end cap assembly 3, and a rotating shaft assembly 4.
The stator assembly 1 at least includes a stator core 11, a winding coil 12, and an insulator 13, the insulator 13 is attached to a tooth portion of the stator core 11, and heat dissipation holes 14 are formed in an axial direction of the stator core 11, where the axial direction refers to an up-down direction taking the direction shown in fig. 3 as an example.
An axial flow gap 21 is formed between the rotor assembly 2 and the stator core 11. Specifically, rotor subassembly 2 includes rotor core 22 and magnet steel 23, wherein rotor core 22 is laminated for the silicon steel sheet blanking and is formed, interior circle side is gone up and is had a plurality of magnetic steel grooves 24, as shown in fig. 7, use high temperature resistant glue to glue the magnet steel in magnetic steel groove 24, can guarantee that the magnet steel also can keep good adhesive force under the high temperature environment, wherein rotor core 22's adjacent magnetic steel groove 24 both sides have blend stop 25, the tangential force that magnet steel 23 received when being used for offsetting rotor subassembly 2 rotates, make magnet steel 23 can not drop because of the too big limit that exceeds the glue adhesive force of moment of torsion. The axial flow gap 21 is formed between the magnetic steel 23 and the stator core 11.
The end cover assembly 3 comprises an upper end cover 32 and a lower end cover 33, and the materials of the end cover assembly are all made of aluminum castings, so that the weight of the motor can be greatly reduced, and the risk is reduced; the upper end cap 32 and the lower end cap 33 are respectively connected to the rotor assembly 2, and specifically, the upper end cap 32 and the lower end cap 33 are both connected to the rotor core 22 through bolts, so that they are encapsulated to form a closed cavity for accommodating the stator assembly 1.
And the opposite sides of the upper end cover 32 and the lower end cover 33, i.e. the inner side surfaces thereof facing the rotor assembly 2, are provided with ribs 35. The ribs 35 are uniformly arranged in a radial shape along the circumferential direction at intervals, and two ends of each rib 35 are connected with the outer wall of the inner ring and the inner wall of the outer ring of the end cover respectively. A radial flow gap 31 is formed between the end cover assembly 3 and the stator assembly 1, specifically, the radial flow gap 31 is formed between the upper end cover 32 and the stator assembly 1, and between the lower end cover 33 and the stator assembly 1, where the radial direction refers to the left and right direction as shown in fig. 3 as an example.
Regarding the mounting means of flabellum, a plurality of installation screw holes are generally reserved on the upper end cover to current mode, and this scheme makes outside dust or water droplet directly get into stator module 1 easily, causes the motor short circuit to burn out easily, and the upper end cover adopts the aluminium material in addition, and the screw hole probably can't bear the weight of huge flabellum under extreme circumstances, appears the danger that the flabellum falls. In this embodiment, the top cover 32 forms a plurality of mounting holes 321, and the connecting member 6 can be connected to the fan blade after passing through the mounting holes 321. Specifically, the connecting piece 6 is a high-strength bolt and is provided with an anti-slip nut 61, so that the installation and fixation of the huge fan blades can be guaranteed.
To facilitate the detachment of the upper cap 32, a plurality of detachment holes 322 are formed in each of the upper cap 32 and the lower cap 33. When the end cover is disassembled, the bolt is inserted into the disassembling hole 322 in a rotating manner, so that the end part of the bolt is abutted against the inside of the motor to facilitate the disassembling of the end cover, and the damage to the rotor core 22 during the disassembling of the end cover is reduced.
The rotating shaft component 4 axially penetrates through the stator component 1 and is fixedly connected with the stator component 1, specifically, the rotating shaft component 4 is fixedly installed on the central axis position of the stator component 1, and the rotating shaft component 4 is rotatably connected with the end cover component 3, specifically, is rotatably connected with the upper end cover 32 and the lower end cover 33. Specifically, the rotating shaft assembly 4 includes a main shaft 41, the main shaft 41 is rotatably connected to the upper end cover 32 and the lower end cover 33 through a bearing 42, and an upper end of the main shaft 41 penetrates through the upper end cover 32 and is connected to a coupler 43.
In order to facilitate the installation of the main shaft 41, the upper end cover 32 and the lower end cover 33 respectively form a bearing installation chamber 34, a reinforcing member 341 is disposed in the bearing installation chamber 34, specifically, the reinforcing member 341 is disposed on a side away from the main shaft 41, and in this embodiment, the reinforcing member 341 is a steel sleeve, which can improve the strength of the bearing 42, prevent the bearing 42 from being damaged, and prolong the service life of the bearing 42.
The coupler 43 and the spindle 41 can be connected through bolts and used for motor suspension and hoisting, the outer diameter of the coupler 43 can be customized according to the size of a suspension extension rod of a customer, and the requirement of hoisting size is met. The outer wall of the coupling 43 forms a slip-off preventing ring 44, and the slip-off preventing ring 44 is provided with a plurality of connecting holes 441, and the connecting holes 441 can be connected with an external connecting piece to play a role in preventing the industrial fan from slipping off and protecting.
Regarding the heat transfer of the motor, when the motor is powered on in the motor, the winding coil 12 generates heat, a part of the heat is transferred to the stator core 11 through the insulating material in the slot, and further transferred to the main shaft 41, the upper and lower bearings 42, the upper end cover 32, the lower end cover 33 and the rotor core 22 in sequence, and the other part of the heat is directly transferred to the rotor core 22 through the axial flow gap 21; meanwhile, the bottom surfaces of the upper end cover 32 and the lower end cover 33 are provided with a plurality of convex ribs 35 which are distributed in a dispersing manner, on one hand, the design is used as a measure for reinforcing the structural strength of the aluminum end cover, more importantly, when the motor rotates, the ribs and the fan blades rotate along with the upper end cover 32 and the lower end cover 33, gas is stirred in an inner cavity of the motor, so that upper cavity gas is blown to the edge and moves downwards through the axial circulation gap 21, lower cavity gas flows from the edge to the axial direction and then moves upwards through the heat dissipation holes 14 reserved on the stator iron core 11, circulating gas flow is formed, and heat generated by the end part of the winding coil 12 is rapidly transferred to the upper end cover 32 and the rotor iron core 22.
In other words, the axial circulation gap 21, the radial circulation gap 31 and the heat dissipation holes 14 are communicated to form the heat dissipation channel 5, and after the motor is started, the end cover assembly 3 rotates relative to the rotating shaft assembly 4 to drive the convex ribs 35 to rotate, so that gas is stirred to flow, and the gas circulates in the heat dissipation channel 5 to realize the function of cooling the inside of the motor.
As shown in fig. 1, a plurality of heat dissipation ribs 331 are uniformly distributed on the outer surface of the lower end cover 33 in a radial shape at intervals, the inner ends of the plurality of heat dissipation ribs 331 are surrounded to form a collection cavity 332, and the airflow in the collection cavity 332 can flow outward in the radial direction from the gap between adjacent heat dissipation ribs 331, so as to form heat dissipation on the outer wall of the motor and on the lower end cover 33.
In other words, outside the motor, a plurality of heat dissipation ribs 331 are annularly distributed on the lower surface of the lower end cover 33, on one hand, a contact surface with air is increased to improve heat dissipation efficiency, on the other hand, the heat dissipation ribs 331 are distributed in a centrifugal fan blade divergence structure, and a gathering cavity 332 is reserved in the middle of the heat dissipation ribs 331.
The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.
Claims (10)
1. An outer rotor permanent magnet motor for an industrial fan, comprising:
the stator assembly (1) at least comprises a stator core (11) and a winding coil (12), wherein heat dissipation holes (14) are formed in the stator core (11) in the axial direction;
a rotor assembly (2) forming an axial flow gap (21) with the stator core (11);
the end cover component (3) is connected with the rotor component (2) and is provided with a convex rib (35);
the rotating shaft assembly (4) axially penetrates through the stator assembly (1) and is connected with the stator assembly, and is rotationally connected with the end cover assembly (3);
a radial circulation gap (31) is formed between the end cover assembly (3) and the stator assembly (1);
axial circulation clearance (21), radial circulation clearance (31) and louvre (14) intercommunication form heat dissipation channel (5), drive protruding muscle (35) and rotate when end cover subassembly (3), and gaseous circulation is in order to realize the cooling in heat dissipation channel (5).
2. The outer rotor permanent magnet motor for industrial fans according to claim 1, characterized in that: the end cover assembly (3) comprises an upper end cover (32) and a lower end cover (33), the upper end cover and the lower end cover are respectively connected with the rotor assembly (2), and a plurality of convex ribs (35) are arranged on the surface of one opposite side of the end cover.
3. An outer rotor permanent magnet motor for an industrial fan according to claim 1 or 2, wherein: the convex ribs (35) are radially and uniformly distributed at intervals along the circumferential direction.
4. The outer rotor permanent magnet motor for industrial fans according to claim 2, characterized in that: the outer surface of lower end cover (33) is radial along the circumference and evenly arranges a plurality of heat dissipation muscle (331) at interval evenly, and the inner of a plurality of heat dissipation muscle (331) encloses and establishes and form and gather chamber (332), and the air current in this gathering chamber (332) can be followed adjacent heat dissipation muscle (331) clearance, along radial outside flow.
5. The outer rotor permanent magnet motor for industrial fans according to claim 2, characterized in that: the rotor assembly (2) comprises a rotor core (22) and magnetic steel (23), the inner ring of the rotor core (22) is provided with a plurality of magnetic steel grooves (24), and a barrier strip (25) is arranged between every two adjacent magnetic steel grooves (24).
6. The outer rotor permanent magnet motor for industrial fans according to claim 2, characterized in that: the upper end cover (32) is provided with a plurality of mounting holes (321), and the connecting piece (6) can be connected with the fan blades after penetrating out of the mounting holes (321).
7. The outer rotor permanent magnet motor for industrial fans according to claim 1, characterized in that: the end cover assembly (3) is an aluminum casting.
8. An outer rotor permanent magnet motor for an industrial fan according to claim 2, wherein: the rotating shaft assembly (4) comprises a main shaft (41) which is respectively rotatably connected with the upper end cover (32) and the lower end cover (33) through a bearing (42), and the upper end of the main shaft (41) penetrates through the upper end cover (32) and is connected with a coupler (43).
9. The outer rotor permanent magnet motor for industrial fans of claim 8, wherein: the upper end cover (32) and the lower end cover (33) respectively form a bearing installation chamber (34), and a reinforcing member (341) is arranged in the bearing installation chamber (34); the upper end cover (32) is formed with a removal hole (322).
10. The outer rotor permanent magnet motor for industrial fans of claim 8, wherein: the outer wall of the coupler (43) forms an anti-drop ring (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222381201.3U CN218526151U (en) | 2022-09-07 | 2022-09-07 | Outer rotor permanent magnet motor for industrial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222381201.3U CN218526151U (en) | 2022-09-07 | 2022-09-07 | Outer rotor permanent magnet motor for industrial fan |
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| Publication Number | Publication Date |
|---|---|
| CN218526151U true CN218526151U (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222381201.3U Active CN218526151U (en) | 2022-09-07 | 2022-09-07 | Outer rotor permanent magnet motor for industrial fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117543896A (en) * | 2023-11-13 | 2024-02-09 | 南京望达数字测绘有限公司 | High-power high-speed electric motorcycle wheel hub motor |
-
2022
- 2022-09-07 CN CN202222381201.3U patent/CN218526151U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117543896A (en) * | 2023-11-13 | 2024-02-09 | 南京望达数字测绘有限公司 | High-power high-speed electric motorcycle wheel hub motor |
| CN117543896B (en) * | 2023-11-13 | 2024-09-10 | 南京望达数字测绘有限公司 | High-power high-speed electric motorcycle wheel hub motor |
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