Self-circulation heat dissipation external rotor motor
By designing a multi-layered air duct system with heat dissipation fins and centrifugal impeller assemblies in the external rotor motor, the problem of insufficient heat dissipation performance of the external rotor motor is solved, self-circulating heat dissipation is achieved, and the service life of the motor is extended.
Patent Information
- Application Number
- CN202422827721.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing external rotor motors have limited heat dissipation performance, making it difficult to achieve effective circulating heat dissipation, resulting in a short service life.
A self-circulating heat dissipation external rotor motor was designed. By connecting heat dissipation fins on the base to form an air duct and combining it with a centrifugal impeller assembly, heat dissipation is achieved through self-circulating heat dissipation. The structure of the stator assembly, rotor assembly and end cover is optimized to form a multi-layer air duct system.
It achieves excellent self-circulating heat dissipation performance, thus improving the service life of the motor.
Smart Images
Figure CN223583926U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an outer rotor motor, especially relates to a self-circulation heat dissipation outer rotor motor. BACKGROUND
[0002] The outer rotor motor is a kind of motor, and rotor is in the outside, stator is in the inside, with simple structure, small axial size and other advantages, is widely used in charging pile, energy storage and other fields.
[0003] In order to facilitate heat dissipation, the relevant outer rotor motor is generally provided with heat dissipation ribs, but the heat dissipation performance of heat dissipation rib is limited, it is difficult to circulate heat dissipation to the relevant outer rotor motor, and the service life of the relevant outer rotor motor is easily low. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of self-circulation heat dissipation outer rotor motor, it has good self-circulation heat dissipation performance.
[0005] Technical scheme:
[0006] A kind of self-circulation heat dissipation outer rotor motor, comprising:
[0007] Base, the base is connected with several first heat dissipation ribs in circumference, and there is first air duct between adjacent first heat dissipation ribs;
[0008] Stator assembly is sleeved to the outer one end of the base;
[0009] Rotary connection of one end of the base is rotator assembly, and rotator assembly is rotatably sleeved in stator assembly outer;
[0010] Centrifugal impeller assembly is sleeved to the outer rotator assembly, and centrifugal impeller assembly and first air duct are communicated;
[0011] End cover is connected to the other end of the base;
[0012] Electronic module is connected in the base, and electronic module and stator assembly are electrically connected.
[0013] Optionally further comprising:
[0014] Several through holes are arranged in the rotator assembly;
[0015] First spacing is formed between the stator assembly and the rotator assembly;
[0016] Second spacing is formed between the base and the rotator assembly;
[0017] Wherein, the first spacing and the several through holes are communicated, and the second spacing is communicated with the first spacing and centrifugal impeller assembly.
[0018] Optionally, the plurality of through holes are uniformly distributed along the circumference of the rotor assembly.
[0019] Optionally, the end cover comprises:
[0020] a cover body;
[0021] a plurality of second heat dissipation ribs connected to the side surface of the cover body in the circumferential direction, the second heat dissipation ribs having second air channels therebetween, the plurality of second heat dissipation ribs and the plurality of first heat dissipation ribs being in corresponding contact, and the plurality of second air channels and the plurality of first air channels being in corresponding communication.
[0022] Optionally, the end cover further comprises:
[0023] a plurality of heat dissipation rib units connected to the end surface of the cover body, the plurality of heat dissipation rib units and the plurality of second heat dissipation ribs being in corresponding connection;
[0024] a third air channel formed between adjacent heat dissipation rib units, the third air channel and the second air channel being in communication.
[0025] Optionally, the heat dissipation rib unit comprises:
[0026] a plurality of bent heat dissipation ribs connected to the end surface of the cover body, the plurality of bent heat dissipation ribs and the plurality of second heat dissipation ribs being in corresponding connection;
[0027] a fourth air channel formed between adjacent bent heat dissipation ribs, the fourth air channel and the second air channel being in communication.
[0028] Optionally, the rotor assembly further comprises a rotating shaft rotatably connected to one end of the base through a bearing, and the rotor assembly is sleeved outside the rotating shaft.
[0029] Optionally, the rotor assembly further comprises a fixing ring sleeved outside the rotor assembly, and the fixing ring is connected to the centrifugal impeller assembly.
[0030] Optionally, the rotor assembly comprises:
[0031] an outer shell rotatably connected to one end of the base, and the centrifugal impeller assembly is sleeved outside the outer shell;
[0032] a plurality of magnetic tiles spaced and connected to the outer shell in the circumferential direction, and the plurality of magnetic tiles are rotatably sleeved outside the stator assembly.
[0033] Optionally, the stator assembly comprises:
[0034] a framework sleeved outside one end of the base, and the rotor assembly is rotatably sleeved outside the framework.
[0035] A plurality of windings are wound on the skeleton, and the plurality of windings are electrically connected with the electronic module.
[0036] Advantages:
[0037] (1) In the heat dissipation, the heat generated by the electronic module and part of the heat generated by the stator assembly are sequentially transmitted to the base and the plurality of first heat radiating ribs, then transmitted to the centrifugal impeller assembly through the plurality of first air ducts, and finally dissipated to the periphery of the self-circulating heat dissipation outer rotor motor of the embodiment through the centrifugal impeller assembly, which has good self-circulating heat dissipation performance and is convenient for improving the service life of the self-circulating heat dissipation outer rotor motor of the embodiment.
[0038] (2) In the heat dissipation, the air outside first enters the rotor assembly through the plurality of through holes, then flows through the first spacing and carries away another part of the heat of the stator assembly, then flows to the centrifugal impeller assembly through the second spacing, and finally dissipated to the periphery of the self-circulating heat dissipation outer rotor motor of the embodiment through the centrifugal impeller assembly, which has good self-circulating heat dissipation performance and is further convenient for improving the service life of the self-circulating heat dissipation outer rotor motor of the embodiment. BRIEF DESCRIPTION OF DRAWINGS
[0039] Figure 1 It is a structure diagram of a self-circulating heat dissipation outer rotor motor of the embodiment 1 of the utility model.
[0040] Figure 2 It is a structure diagram of a self-circulating heat dissipation outer rotor motor of the embodiment 1 of the utility model.
[0041] Figure 3 It is a structure diagram of a self-circulating heat dissipation outer rotor motor of the embodiment 1 of the utility model.
[0042] Figure 4 It is Figure 3 It is a sectional view of A-A.
[0043] Figure 5 It is Figure 3 It is a second sectional view of A-A.
[0044] In the figure: 1, base; 11, first heat radiating rib; 12, first air duct; 13, mounting ear; 14, mounting hole; 2, stator assembly; 21, skeleton; 3, rotor assembly; 31, shell; 311, through hole; 32, magnetic tile; 4, centrifugal impeller assembly; 5, end cover; 51, cover body; 52, second heat radiating rib; 53, second air duct; 54, heat radiating rib unit; 541, bent heat radiating rib; 542, fourth air duct; 55, third air duct; 6, electronic module; 71, first spacing; 72, second spacing; 81, rotating shaft; 82, bearing; 9, fixing ring. DETAILED DESCRIPTION
[0045] In order to make the technical scheme of the utility model more clear, the utility model will be further described in detail below in combination with the drawings and specific embodiments.
[0046] Embodiment 1
[0047] As Figure 1 , Figure 4 - Figure 5 The embodiment provides a self-circulation heat dissipation outer rotor motor, which comprises a base 1, a plurality of first heat dissipation ribs 11 are connected to the base 1 in the circumferential direction, and a first air duct 12 is arranged between adjacent first heat dissipation ribs 11; a stator assembly 2 is sleeved on one end outside of the base 1; a rotor assembly 3 is rotationally connected to one end of the base 1, and the rotor assembly 3 is rotationally sleeved outside the stator assembly 2; a centrifugal impeller assembly 4 is sleeved outside the rotor assembly 3, and the centrifugal impeller assembly 4 is communicated with the first air duct 12; an end cover 5 is connected to the other end of the base 1; an electronic module 6 is connected in the base 1, and the electronic module 6 is electrically connected with the stator assembly 2.
[0048] Specifically, during heat dissipation, the heat generated by the electronic module 6 and part of the heat generated by the stator assembly 2 are sequentially transmitted to the base 1 and the plurality of first heat dissipation ribs 11, then transmitted to the centrifugal impeller assembly 4 through the plurality of first air ducts 12, and finally dissipated to the periphery of the self-circulation heat dissipation outer rotor motor of the embodiment through the centrifugal impeller assembly 4, so that the self-circulation heat dissipation performance is good, and the service life of the self-circulation heat dissipation outer rotor motor of the embodiment is improved.
[0049] The base 1 is used for bearing the plurality of first heat dissipation ribs 11, the plurality of first heat dissipation ribs 11 cooperate with the plurality of first air ducts 12 to dissipate heat, the plurality of first heat dissipation ribs 11 are preferably distributed along the circumferential direction of the base 1, so that the plurality of first air ducts 12 are distributed along the circumferential direction of the base 1, the heat dissipation uniformity is good, a plurality of mounting ears 13 can also be uniformly connected in the circumferential direction of the base 1, mounting holes 14 are arranged on the mounting ears 13, and the self-circulation heat dissipation outer rotor motor of the embodiment is fixed; the stator assembly 2 is used for generating a magnetic field; the rotor assembly 3 is used for driving the centrifugal impeller assembly 4 to rotate around the stator assembly 2; the centrifugal impeller assembly 4 is used for forming a negative pressure, so that the heat from the plurality of first air ducts 12 is transmitted to the periphery of the self-circulation heat dissipation outer rotor motor of the embodiment; the end cover 5 is used for realizing the sealing of the self-circulation heat dissipation outer rotor motor of the embodiment, so as to protect the internal parts such as the electronic module 6 and the stator assembly 2; the electronic module 6 can specifically include a controller, a sensor and the like, and is used for controlling the stator assembly 2.
[0050] Further, as Figure 4 - Figure 5Further comprising: a plurality of through holes 311 arranged on the rotor assembly 3; a first spacing 71 formed between the stator assembly 2 and the rotor assembly 3; a second spacing 72 formed between the base 1 and the rotor assembly 3; wherein the first spacing 71 and the plurality of through holes 311 are communicated, and the second spacing 72 is communicated with the first spacing 71 and the centrifugal impeller assembly 4.
[0051] Specifically, during heat dissipation, the air from the outside enters the rotor assembly 3 through the plurality of through holes 311, then flows through the first spacing 71 and carries away another part of the heat of the stator assembly 2, and then flows to the centrifugal impeller assembly 4 through the second spacing 72, and finally dissipates to the surroundings of the self-circulating heat dissipation outer rotor motor through the centrifugal impeller assembly 4, which has good self-circulating heat dissipation performance and further improves the service life of the self-circulating heat dissipation outer rotor motor.
[0052] Wherein, the plurality of through holes 311 facilitate the air from the outside to enter the rotor assembly 3, and the number of the plurality of through holes 311 is not limited, and is preferably six; the first spacing 71 and the second spacing 72 are both used for carrying away another part of the heat of the stator assembly 2, facilitating heat dissipation.
[0053] Further, as shown in FIG. 1, the plurality of through holes 311 are arranged on the rotor assembly 3. Figure 3 Specifically, the circumferential uniform distribution facilitates the uniformity of heat dissipation of another part of the heat of the stator assembly 2.
[0054] Further, as shown in FIG. 1, the plurality of through holes 311 are arranged on the rotor assembly 3. Figure 1 Further, as shown in FIG. 1, the plurality of through holes 311 are arranged on the rotor assembly 3.
[0055] Specifically, during heat dissipation, the air from the outside enters the rotor assembly 3 through the plurality of through holes 311, then flows through the first spacing 71 and carries away another part of the heat of the stator assembly 2, and then flows to the centrifugal impeller assembly 4 through the second spacing 72, and finally dissipates to the surroundings of the self-circulating heat dissipation outer rotor motor through the centrifugal impeller assembly 4, which has good self-circulating heat dissipation performance and further improves the service life of the self-circulating heat dissipation outer rotor motor.
[0056] Further, as shown in FIG. 1, the plurality of through holes 311 are arranged on the rotor assembly 3. Figure 1The end cover 5 further comprises: a plurality of heat dissipation fin units 54 connected to the end face of the cover body 51, the plurality of heat dissipation fin units 54 being connected to the second heat dissipation fins 52 correspondingly; and third air channels 55 formed between adjacent heat dissipation fin units 54, the third air channels 55 being communicated with the second air channels 53.
[0057] Specifically, during heat dissipation, air at the end face of the cover body 51 flows through the third air channels 55 first, and carries away heat of the plurality of heat dissipation fin units 54, and then flows through the second air channels 53, and carries away heat of the second heat dissipation fins 52.
[0058] The plurality of heat dissipation fin units 54 are used for heat dissipation, and the plurality of heat dissipation fin units 54 are preferably distributed evenly along the circumference of the end face of the cover body 51, so that the third air channels 55 are distributed evenly along the circumference of the end face of the cover body 51, and the uniformity of heat dissipation is ensured; the third air channels 55 are used for guiding air at the end face of the cover body 51, so that the air at the end face of the cover body 51 enters the second air channels 53 along the third air channels 55, and thus more air is allowed to participate in heat dissipation, and the heat dissipation performance is ensured to be good.
[0059] Further, as shown in Figure 1 The heat dissipation fin unit 54 comprises: a plurality of bent heat dissipation fins 541 connected to the end face of the cover body 51, the plurality of bent heat dissipation fins 541 being connected to the second heat dissipation fins 52 correspondingly; and fourth air channels 542 formed between adjacent bent heat dissipation fins 541, the fourth air channels 542 being communicated with the second air channels 53.
[0060] Specifically, during heat dissipation, air at the end face of the cover body 51 flows through the fourth air channels 542 first, and carries away heat of the plurality of bent heat dissipation fins 541, and then flows through the second air channels 53, and carries away heat of the second heat dissipation fins 52.
[0061] The plurality of bent heat dissipation fins 541 are used for heat dissipation, and the plurality of bent heat dissipation fins 541 are preferably distributed equidistantly along the radial direction of the end face of the cover body 51, so that the uniformity of heat dissipation is ensured to be good; the fourth air channels 542 are used for guiding air at the end face of the cover body 51, so that the air at the end face of the cover body 51 enters the second air channels 53 along the fourth air channels 542, and thus more air is allowed to participate in heat dissipation, and the heat dissipation performance is ensured to be good.
[0062] Further, as shown in Figure 4 The further comprises a rotating shaft 81 rotatably connected to one end of the base 1 through a bearing 82, and the rotor assembly 3 is sleeved on the rotating shaft 81. Specifically, the rotating shaft 81 and the bearing 82 facilitate rotation of the rotor assembly 3 around one end of the base 1, and the number of the bearings 82 is preferably two.
[0063] Further, as shown in Figure 2Further comprising a fixing ring 9 sleeved outside the rotor assembly 3, the fixing ring 9 is connected with the centrifugal impeller assembly 4. Specifically, the fixing ring 9 is used to realize the connection of the rotor assembly 3 and the centrifugal impeller assembly 4, the connection mode of the fixing ring 9 and the rotor assembly 3 is preferably interference fit connection, and the fixing ring 9 and the centrifugal impeller assembly 4 are preferably detachably connected through fasteners.
[0064] Further, as shown in Figure 4 , the rotor assembly 3 comprises: an outer shell 31 rotationally connected with one end of the base 1, and the centrifugal impeller assembly 4 is sleeved outside the outer shell 31; a plurality of magnetic tiles 32 are connected in the outer shell 31 in a circumferential direction, and the plurality of magnetic tiles 32 are rotationally sleeved outside the stator assembly 2. Specifically, the outer shell 31 is used to carry the centrifugal impeller assembly 4, the plurality of magnetic tiles 32 and the like; the plurality of magnetic tiles 32 are used to magnetically cooperate with the stator assembly 2, and the connection mode between the plurality of magnetic tiles 32 and the outer shell 31 is preferably glue joint.
[0065] Further, as shown in Figure 4 , the stator assembly 2 comprises: a framework 21 sleeved outside one end of the base 1, and the rotor assembly 3 is rotationally sleeved outside the framework 21; a plurality of windings are wound on the framework 21, and the plurality of windings are electrically connected with the electronic module 6. Specifically, the framework 21 is used to carry the plurality of windings; and the plurality of windings are used to generate a magnetic field.
[0066] The above embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. A self-circulating heat dissipation external rotor motor, characterized in that, include: A base (1) is provided with a plurality of first heat dissipation fins (11) connected circumferentially, and a first air duct (12) is provided between adjacent first heat dissipation fins (11). A stator assembly (2) sleeved on one end of the base (1); A rotor assembly (3) is rotatably connected to one end of the base (1), and the rotor assembly (3) is rotatably sleeved outside the stator assembly (2); A centrifugal impeller assembly (4) is fitted outside the rotor assembly (3), and the centrifugal impeller assembly (4) is connected to the first air duct (12); End cap (5) connected to the other end of the base (1); An electronic module (6) is connected to the base (1), and the electronic module (6) is electrically connected to the stator assembly (2).
2. The self-circulating heat dissipation external rotor motor according to claim 1, characterized in that, Also includes: A plurality of through holes (311) are provided in the rotor assembly (3); A first gap (71) is formed between the stator assembly (2) and the rotor assembly (3); A second gap (72) is formed between the base (1) and the rotor assembly (3); The first spacing (71) and the plurality of through holes (311) are connected, and the second spacing (72) is connected to the first spacing (71) and the centrifugal impeller assembly (4).
3. The self-circulating heat dissipation external rotor motor according to claim 2, characterized in that, The plurality of through holes (311) are evenly distributed along the circumference of the rotor assembly (3).
4. A self-circulating heat dissipation external rotor motor according to any one of claims 1-3, characterized in that, The end cap (5) includes: Cover body (51); A plurality of second heat dissipation ribs (52) are connected circumferentially to the side of the cover body (51), and a second air duct (53) is provided between adjacent second heat dissipation ribs (52). The plurality of second heat dissipation ribs (52) and the plurality of first heat dissipation ribs (11) are in corresponding contact, and the plurality of second air ducts (53) and the plurality of first air ducts (12) are in corresponding communication.
5. A self-circulating heat dissipation external rotor motor according to claim 4, characterized in that, The end cap (5) also includes: Multiple heat dissipation rib units (54) are connected to the end face of the cover body (51), and the multiple heat dissipation rib units (54) and a number of second heat dissipation ribs (52) are correspondingly connected; A third air duct (55) is formed between adjacent heat dissipation fin units (54), and the third air duct (55) is connected to the second air duct (53).
6. A self-circulating heat dissipation external rotor motor according to claim 5, characterized in that, The heat dissipation fin unit (54) includes: A plurality of bent heat dissipation ribs (541) are connected to the end face of the cover body (51), and the plurality of bent heat dissipation ribs (541) and the plurality of second heat dissipation ribs (52) are connected accordingly. A fourth air duct (542) is formed between adjacent bent heat dissipation fins (541), and the fourth air duct (542) is connected to the second air duct (53).
7. A self-circulating heat dissipation external rotor motor according to any one of claims 1-3, characterized in that, It also includes a rotating shaft (81), which is rotatably connected to one end of the base (1) via a bearing (82), and the rotor assembly (3) is sleeved on the outside of the rotating shaft (81).
8. A self-circulating heat dissipation external rotor motor according to any one of claims 1-3, characterized in that, It also includes a retaining ring (9), which is sleeved on the outside of the rotor assembly (3) and is connected to the centrifugal impeller assembly (4).
9. A self-circulating heat dissipation external rotor motor according to any one of claims 1-3, characterized in that, The rotor assembly (3) includes: The housing (31) is rotatably connected to one end of the base (1), and the centrifugal impeller assembly (4) is sleeved on the housing (31); A plurality of magnetic tiles (32) are circumferentially spaced within the outer casing (31), and the plurality of magnetic tiles (32) are rotatably sleeved on the outside of the stator assembly (2).
10. A self-circulating heat dissipation external rotor motor according to any one of claims 1-3, characterized in that, The stator assembly (2) includes: A frame (21) is sleeved on one end of the base (1), and the rotor assembly (3) is rotatably sleeved on the frame (21); Several windings are wound around the skeleton (21), and the several windings are electrically connected to the electronic module (6).