Outer rotor housing, outer rotor and motor

Abstract

This utility model provides an outer rotor housing, an outer rotor, and a motor. The outer rotor housing includes a main body comprising a tubular body and an end panel at one end of the tubular body. The end panel has multiple air inlets along its circumferential direction. Each air inlet corresponds to at least one air guide, used to either guide cold air from outside the main body housing into the main body housing or to guide cold air from inside the main body housing to the outside through the air inlet. When the air guide is outside the main body housing, the outer rotor housing rotates, and the air guide forces cold air from outside the main body housing into the main body housing through the air inlets, thereby achieving overall motor cooling. When the air guide is inside the main body housing, the outer rotor housing rotates, and the air guide forces hot air from inside the main body housing to the outside through the air inlets, thereby achieving overall motor cooling. This design improves cooling efficiency, reduces costs, and increases motor utilization without requiring additional cooling equipment.

Description

Technical Field

[0001] This utility model relates to the field of external rotor housing technology, and in particular to an external rotor housing, an external rotor, and a motor. Background Technology

[0002] External rotor housings are used in electric motors, and existing motor cooling solutions often involve directly installing heat dissipation slots on the outer rotor housing or adding additional cooling equipment. Directly installing heat dissipation slots on the outer rotor housing results in poor heat dissipation; adding additional cooling equipment significantly increases operating costs. Therefore, there is an urgent need to design an external rotor housing that offers good heat dissipation and low cost. Summary of the Invention

[0003] This utility model provides an outer rotor housing, an outer rotor, and a motor to solve the problems of poor heat dissipation and high cost of existing outer rotor housings.

[0004] An outer rotor housing includes a main housing and an air guide component;

[0005] The main body shell includes a tubular body and an end panel disposed at one end of the tubular body, and the end panel is provided with a plurality of air inlets along the circumferential direction;

[0006] Each of the aforementioned air inlets is provided with at least one of the aforementioned air guides, which are used to introduce cold air from outside the main body shell into the main body shell through the air inlet or to guide hot air from inside the main body shell to outside the main body shell through the air inlet.

[0007] Preferably, the air guide component includes any one of an air guide plate, an air guide shell, and an air guide fan blade.

[0008] Preferably, each of the air guide plates is located in the side area of ​​the air inlet, and one side of each of the air guide plates is connected to a side wall of the air inlet, which is a side wall adjacent to the inner side wall and / or the outer side wall of the air inlet.

[0009] At least a portion of the air guide plate is located outside or inside the main body shell, and there is an angle between it and the end panel.

[0010] Preferably, each of the air guide plates is located in the middle area of ​​an air inlet, and the opposite two sides of each air guide plate are respectively connected to the inner and outer side walls of an air inlet.

[0011] At least a portion of the air guide plate is located outside or inside the main body shell, and there is an angle between it and the end panel.

[0012] Preferably, the air guide shell includes an arc-shaped shell and two shell walls extending from opposite sides of the arc-shaped shell in the same direction;

[0013] One side of the arc-shaped housing is connected to one side wall of the air inlet, and this side wall is adjacent to the inner side wall and / or the outer side wall of the air inlet.

[0014] One side of each of the two shell walls is respectively connected to the inner and outer side walls of the air inlet;

[0015] The arc-shaped shell and the two shell walls are located outside or inside the main shell, forming an air intake channel or an air exhaust channel that communicates with the air inlet.

[0016] Preferably, the fan blade includes a blade and a fixing portion disposed at one end of the blade;

[0017] The fixing part is installed on the end panel and is located in the area of ​​the inner side wall of the air inlet or the area of ​​the outer side wall of the air inlet.

[0018] The blade is located inside the air inlet, at least a portion of the blade is located outside or inside the main body shell, and there is an angle between the plane of the blade and the end panel.

[0019] Preferably, an exhaust frame is installed on the tubular body, the exhaust frame including a fixing sleeve and at least one agitator extending from the periphery of the fixing sleeve along the radial direction of the fixing sleeve;

[0020] The fixing sleeve is fitted onto the tubular body and is located in the area near the end panel;

[0021] The agitator is used to agitate the cold air outside the main body shell.

[0022] Preferably, the agitator includes a support plate extending radially along the fixed sleeve and a baffle plate extending axially from one side of the support plate along the fixed sleeve.

[0023] The support plate and the wind deflector work together to form an exhaust channel.

[0024] An outer rotor includes a permanent magnet and an outer rotor housing; the permanent magnet is disposed on the inner wall of the outer rotor housing.

[0025] An electric motor includes a stator and the said outer rotor housing; the stator is mounted inside the outer rotor.

[0026] The outer rotor housing provided in this embodiment of the utility model has multiple air inlets arranged circumferentially on the end panel, with these inlets spaced apart along the circumferential direction of the main body housing. Cold air outside the main body housing can enter the main body housing through these inlets, and the other end of the main body housing serves as an air outlet, allowing hot air inside the main body housing to flow out. Hot air inside the main body housing can also flow out through the multiple air inlets. Each air inlet is equipped with at least one air guide. This arrangement allows the outer rotor housing to rotate when the air guide is outside the main body housing, forcing cold air from outside the main body housing into the main body housing through the air inlets, thus achieving overall motor cooling. Conversely, when the air guide is inside the main body housing, the outer rotor housing rotates, forcing hot air inside the main body housing to the outside through the air inlets, again achieving overall motor cooling. Compared to existing technologies, this design improves heat dissipation without requiring additional cooling equipment, reduces costs, and increases motor utilization. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a first shaft side view of the outer rotor housing in one embodiment of the present invention;

[0029] Figure 2 This is a second shaft side view of the outer rotor housing in one embodiment of the present invention;

[0030] Figure 3 This is a third axial view of the outer rotor housing in one embodiment of the present invention;

[0031] Figure 4 This is a fourth axial side view of the outer rotor housing in one embodiment of the present invention;

[0032] Figure 5 This is a fifth axial view of the outer rotor housing in one embodiment of the present invention.

[0033] Among them, 1. Main shell; 11. Tubular main body; 12. End panel; 2. Air guide component; 21. Air guide plate; 22. Air guide shell; 221. Arc-shaped shell; 222. Shell wall; 23. Air guide fan blade; 231. Blade; 232. Fixing part; 3. Air inlet; 4. Exhaust frame; 41. Fixing sleeve; 42. Air agitator; 421. Support plate; 422. Baffle plate; 423. Reinforcing rib. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] This utility model embodiment provides an outer rotor housing, see reference. Figures 1-4 The outer rotor housing includes a main body housing 1 and an air guide 2. The main body housing 1 includes a tubular body 11 and an end panel 12 disposed at one end of the tubular body 11. The end panel 12 is provided with a plurality of air inlets 3 along the circumferential direction. Each air inlet 3 is provided with at least one air guide 2, which is used to introduce cold air outside the main body housing 1 into the main body housing 1 through the air inlet 3 or to guide cold air inside the main body housing 1 to the outside of the main body housing 1 through the air inlet 3.

[0038] As an example, the outer rotor housing is mainly used in motors. It can be said that the outer rotor housing and the motor housing together constitute the outer shell of the motor, or that the outer rotor housing is the outer shell of the motor. When the motor is working, the stator is fixed, and the outer rotor rotates around the motor's shaft. In other words, the outer rotor housing can rotate around the motor's shaft. The outer rotor housing includes a main body 1 and an air guide 2. The main body 1 includes a tubular body 11 and an end panel 12 disposed at one end of the tubular body 11. Multiple air inlets 3 are provided on the end panel 12 along the circumferential direction, and these multiple air inlets 3 are spaced apart along the circumferential direction of the main body 1. Cold air outside the main body 1 can enter the main body 1 through the multiple air inlets 3. The other end of the main body 1 serves as an air outlet, from which hot air inside the main body 1 can flow out. Hot air inside the main body 1 can flow to the outside of the main body 1 through the multiple air inlets 3. Each air inlet 3 is equipped with at least one air guide 2. With this configuration, when the air guide 2 is outside the main body shell 1, the outer rotor shell rotates, and the air guide 2 can force the cold air outside the main body shell 1 into the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. When the air guide 2 is inside the main body shell 1, the outer rotor shell rotates, and the air guide 2 can force the hot air inside the main body shell 1 to the outside of the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. Compared with the existing technology, this method improves the heat dissipation effect, reduces costs, and increases the utilization rate of the motor without the need for additional heat dissipation equipment.

[0039] In one embodiment, reference is made to Figures 1-4 The air guide component 2 includes any one of the air guide plate 21, air guide shell 22, and air guide fan blade 23.

[0040] As an example, the structure of the air guide 2 is introduced, specifically including any one of the air guide plate 21, air guide shell 22, and air guide fan blade 23. When the air guide 2 is located outside the main body shell 1, the outer rotor shell rotates, and any one of the air guide plate 21, air guide shell 22, and air guide fan blade 23 can force the cold air outside the main body shell 1 into the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. When the air guide 2 is located inside the main body shell 1, the outer rotor shell rotates, and any one of the air guide plate 21, air guide shell 22, and air guide fan blade 23 can force the hot air inside the main body shell 1 to be forced out of the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor.

[0041] In one embodiment, reference is made to Figure 1 Each air guide plate 21 is located in the side area of ​​an air inlet 3. One side of each air guide plate 21 is connected to one side wall of an air inlet 3. The side wall is adjacent to the inner side wall and / or the outer side wall of the air inlet 3. At least a portion of the air guide plate 21 is located outside or inside the main body shell 1 and has an angle with the end panel 12.

[0042] As an example, a first arrangement of the air guide plate 21 is introduced. Each air guide plate 21 is located in the side area of ​​an air inlet 3. During installation, one side of each air guide plate 21 is connected to one side wall of an air inlet 3. This side wall is adjacent to the inner side wall and / or the outer side wall of the air inlet 3. For example, the air inlet 3 may be, but is not limited to, a trapezoidal opening. The trapezoidal opening includes an inner side wall, an outer side wall, a first waist wall, and a second waist wall. The inner side wall is the side wall close to the center of the end panel 12, and the outer side wall is the side wall away from the center of the end panel 12. One side of the air guide plate 21 is connected to the first waist wall or the second waist wall. At least a portion of the air guide plate 21 is located outside or inside the main body shell 1, and there is an angle between it and the end panel 12. With this configuration, when at least a portion of the air guide plate 21 is located outside the main body shell 1 and the outer rotor shell rotates, the air guide plate 21 forces the cold air outside the main body shell 1 into the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. When at least a portion of the air guide plate 21 is located inside the main body shell 1 and the outer rotor shell rotates, the air guide plate 21 forces the hot air inside the main body shell 1 to the outside of the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. Furthermore, the air guide plate 21 can also be considered part of the outer rotor housing. During the manufacturing of the outer rotor housing, the main body housing 1 is produced using blanking and stamping processes. The air guide plate 21 is then created on the main body housing 1 by cutting and stamping. Next, the air guide plate 21 is bent so that at least a portion of it is located outside or inside the main body housing 1, and forms an angle with the end panel 12. This arrangement allows for the production of the air guide plate 21 using different processing methods depending on the actual rotation direction of the motor. This processing is integrated with other stamping processes for the motor, eliminating the need for separate processing and avoiding increased manufacturing costs. The angle ranges from 5° to 90°.

[0043] In one embodiment, reference is made to Figure 1 Each air guide plate 21 is located in the middle area of ​​an air inlet 3, and the opposite sides of each air guide plate 21 are respectively connected to the inner and outer side walls of an air inlet 3; at least a portion of the air guide plate 21 is located outside or inside the main body shell 1, and there is an angle between it and the end panel 12.

[0044] As an example, a second arrangement of the air guide plate 21 is introduced. Each air guide plate 21 is located in the middle area of ​​the air inlet 3. During installation, the opposite two sides of each air guide plate 21 are respectively connected to the inner and outer side walls of the air inlet 3. For example, the air inlet 3 can be, but is not limited to, a trapezoidal opening. The trapezoidal opening includes an inner side wall, an outer side wall, a first waist wall, and a second waist wall. The inner side wall is the side wall close to the center of the end panel 12, and the outer side wall is the side wall away from the center of the end panel 12. The opposite two sides of the air guide plate 21 are respectively connected to the inner side wall and the outer side wall. In this way, each air guide plate 21 divides an air inlet 3 into a first air inlet area and a second air inlet area. At least a portion of the air guide plate 21 is located outside or inside the main body shell 1, and forms an angle with the end panel 12. This arrangement allows for the following cooling effects: When at least a portion of the air guide plate 21 is outside the main body shell 1, the outer rotor shell rotates clockwise, and the air guide plate 21 forces cold air from outside the main body shell 1 into the main body shell 1 through the first air inlet area, thus achieving overall motor cooling; when the outer rotor shell rotates counterclockwise, the air guide plate 21 forces cold air from outside the main body shell 1 into the main body shell 1 through the second air inlet area, thus achieving overall motor cooling; when at least a portion of the air guide plate 21 is inside the main body shell 1, the outer rotor shell rotates clockwise, and the air guide plate 21 forces hot air from inside the main body shell 1 to outside the main body shell 1 through the first air inlet area, thus achieving overall motor cooling; when the outer rotor shell rotates counterclockwise, the air guide plate 21 forces hot air from inside the main body shell 1 to outside the main body shell 1 through the second air inlet area, thus achieving overall motor cooling. The angle ranges from 5° to 90°.

[0045] In one embodiment, reference is made to Figure 2 The air guide shell 22 includes an arc-shaped shell 221 and two shell walls 222 extending from opposite sides of the arc-shaped shell 221 in the same direction; one side of the arc-shaped shell 221 is connected to one side wall of the air inlet 3, which is a side wall adjacent to the inner side wall and / or the outer side wall of the air inlet 3; one side of the two shell walls 222 is respectively connected to the inner and outer side walls of the air inlet 3; the arc-shaped shell 221 and the two shell walls 222 are located outside or inside the main shell 1 to form an air intake channel or an air exhaust channel communicating with the air inlet 3.

[0046] As an example, the structure of the air guide shell 22 is described. The air guide shell 22 includes an arc-shaped shell 221 and two shell walls 222. The two shell walls 222 are components extending from opposite sides of the arc-shaped shell 221 in the same direction. During installation, one side of the arc-shaped shell 221 is connected to one side wall of the air inlet 3. This side wall is adjacent to the inner side wall and / or the outer side wall of the air inlet 3. One side of each of the two shell walls 222 is connected to the inner and outer side walls of the air inlet 3, respectively. For example, the air inlet 3 can be, but is not limited to, a rectangular opening. The rectangular opening includes an inner side wall, an outer side wall, and two waist walls. The inner side wall is the side wall near the center of the end panel 12, and the outer side wall is the side wall away from the center of the end panel 12. The arc-shaped shell 221 is then connected to the air inlet 3. One side of the arc-shaped shell 221 is connected to either of the two waist walls, and one side of each of the two shell walls 222 is connected to the inner and outer side walls of the air inlet 3, respectively. With this configuration, the arc-shaped shell 221 and the two shell walls 222 are located outside the main body shell 1 to form an air intake channel communicating with the air inlet 3. When the outer rotor shell rotates, the air intake channel forces the cold air outside the main body shell 1 into the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. Alternatively, the arc-shaped shell 221 and the two shell walls 222 are located inside the main body shell 1 to form an exhaust channel communicating with the air inlet 3. When the outer rotor shell rotates, the exhaust channel forces the hot air inside the main body shell 1 to the outside of the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. In addition, the air guide shell 22 can also be said to be part of the outer rotor shell. When making the outer rotor shell, the main shell 1 is made by blanking and stamping process, and the air guide shell 22 is made directly on the main shell 1 by cutting and stamping (or by using a groove). With this setting, the air guide shell 22 is made by processing in different directions according to the actual rotation direction of the motor. The processing method is to process it together with other stamping processes of the motor, without the need for separate processing, thus avoiding increasing the process cost.

[0047] In one embodiment, reference is made to Figure 3 and Figure 4 The guide fan blade 23 includes a blade 231 and a fixing part 232 disposed at one end of the blade 231; the fixing part 232 is mounted on the end panel 12 and is located in the area of ​​the inner side wall of the air inlet 3 or the area of ​​the outer side wall of the air inlet 3; the blade 231 is located inside the air inlet 3, at least a portion of the blade 231 is located outside or inside the main body shell 1, and there is an angle between the plane of the blade 231 and the end panel 12.

[0048] As an example, the structural form of the guide fan blade 23 is introduced. The guide fan blade 23 includes a blade 231 and a fixing part 232, which is disposed at one end of the blade 231. During installation, the fixing part 232 is installed on the end panel 12 by means of welding, screwing, snap-fitting, or bonding, located in the area of ​​the inner wall of the air inlet 3 or the area of ​​the outer wall of the air inlet 3, for example. Figure 3 The fixing part 232 of the central guide fan blade 23 is installed on the end panel 12 by welding. The fixing part 232 is located in the area of ​​the inner side wall of the air inlet 3 to ensure the reliability of the guide fan blade 23. Figure 4 The fixing part 232 of the central guide fan blade 23 is installed on the end panel 12 by screw connection. The fixing part 232 is located in the area of ​​the inner side wall of the air inlet 3, which facilitates the installation and removal of the guide fan blade 23. The blade 231 is located inside the air inlet 3, and the blade 231 can divide the air inlet 3 into a first air inlet area and a second air inlet area. When at least a portion of the blade 231 is located outside the main body shell 1, and there is an angle between the plane of the blade 231 and the end panel 12, the outer rotor shell rotates clockwise, and the blade 231 forces cold air outside the main body shell 1 into the main body shell 1 through the first air inlet area, thereby achieving the purpose of heat dissipation for the entire motor; when the outer rotor shell rotates counterclockwise, the blade 231 forces cold air outside the main body shell 1 into the main body shell 1 through the second air inlet area, thereby achieving the purpose of heat dissipation for the entire motor; when at least a portion of the blade 231 is located inside the main body shell 1, and there is an angle between the plane of the blade 231 and the end panel 12, the outer rotor shell rotates clockwise, and the blade 231 forces hot air outside the main body shell 1 to the outside of the main body shell 1 through the first air inlet area, thereby achieving the purpose of heat dissipation for the entire motor; when the outer rotor shell rotates counterclockwise, the blade 231 forces hot air outside the main body shell 1 to the outside of the main body shell 1 through the second air inlet area, thereby achieving the purpose of heat dissipation for the entire motor. The angle ranges from 5° to 90°.

[0049] In one embodiment, reference is made to Figure 5 An exhaust frame 4 is installed on the tubular body 11. The exhaust frame 4 includes a fixed sleeve 41 and at least one agitator 42 extending from the periphery of the fixed sleeve 41 along the radial direction of the fixed sleeve 41. The fixed sleeve 41 is fitted onto the tubular body 11 and is located in the area near the end panel 12. The agitator 42 is used to agitate the cold air outside the body shell 1.

[0050] As an example, an exhaust frame 4 is installed on the tubular body 11. The exhaust frame 4 includes a fixing sleeve 41 and at least one agitator 42. During installation, the fixing sleeve 41 is fitted onto the tubular body 11, located in the area near the end panel 12. Specifically, the fixing sleeve 41 is installed on the tubular body 11 by snap-fit, welding, or screw connection. A part of the fixing sleeve 41 covers the tubular body 11, and the other part covers the end panel 12. The at least one agitator 42 is a component extending radially from the periphery of the fixing sleeve 41. In other words, the agitator 42 is a component extending radially from the periphery of the fixing sleeve 41 along the main body shell 1. When the outer rotor shell rotates, the agitator 42 can agitate the cold air outside the main body shell 1, forcibly disturbing the airflow around the main body shell 1, thereby achieving the purpose of cooling the entire motor. At least one agitator 42 can be designed as multiple agitators, which are arranged at intervals along the circumferential direction of the fixing sleeve 41. In this example, the exhaust fan 4 and the air guide 2 work together to dissipate heat from the entire motor through two methods, thereby improving heat dissipation efficiency.

[0051] In one embodiment, reference is made to Figure 5 The agitator 42 includes a support plate 421 extending radially along the fixed sleeve 41 and a baffle plate 422 extending axially from one side of the support plate 421 along the fixed sleeve 41; the support plate 421 and the baffle plate 422 cooperate to form an exhaust channel.

[0052] As an example, the agitator 42 includes a support plate 421 and a baffle plate 422. The support plate 421 is a component that extends from the periphery of the fixed sleeve 41 along the radial direction of the fixed sleeve 41, and the baffle plate 422 is a component that extends from one side of the support plate 421 along the axial direction of the fixed sleeve 41. Alternatively, the baffle plate 422 can be described as a component that extends from the periphery of the fixed sleeve 41 along the axial direction of the main body shell 1. With this arrangement, the support plate 421 and the baffle plate 422 cooperate to form an exhaust channel. When the outer rotor shell rotates, the agitator 42 can agitate the cold air outside the main body shell 1 and forcibly disturb the air flow around the main body shell 1, thereby achieving the purpose of cooling the entire motor. In addition, each support plate 421 is provided with a reinforcing rib 423. The reinforcing rib 423 can effectively improve the support strength of the support plate 421. The reinforcing rib 423 also makes the support plate 421 form a depression on one side of the exhaust channel. The air in the exhaust channel will flow through the depression, thereby generating a certain force to accelerate the air flow speed.

[0053] This utility model embodiment provides an outer rotor, including a permanent magnet and an outer rotor housing; the permanent magnet is disposed on the inner wall of the outer rotor housing.

[0054] As an example, the outer rotor includes a permanent magnet and an outer rotor housing. During installation, the permanent magnet is placed on the inner wall of the outer rotor housing, providing the magnetic field required by the motor. The outer rotor housing includes a main body 1 and an air guide 2. The main body 1 includes a tubular body 11 and an end panel 12 disposed at one end of the tubular body 11. Multiple air inlets 3 are provided on the end panel 12 in the circumferential direction, and the multiple air inlets 3 are spaced apart along the circumferential direction of the main body 1. Cold air outside the main body 1 can enter the main body 1 through the multiple air inlets 3. The other end of the main body 1 serves as an air outlet, from which hot air inside the main body 1 can flow out. Hot air inside the main body 1 can flow to the outside of the main body 1 through the multiple air inlets 3. Each air inlet 3 is equipped with at least one air guide 2. With this configuration, when the air guide 2 is outside the main body shell 1, the outer rotor shell rotates, and the air guide 2 can force the cold air outside the main body shell 1 into the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. When the air guide 2 is inside the main body shell 1, the outer rotor shell rotates, and the air guide 2 can force the hot air inside the main body shell 1 to the outside of the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. Compared with the existing technology, this method improves the heat dissipation effect, reduces costs, and increases the utilization rate of the motor without the need for additional heat dissipation equipment.

[0055] This utility model provides an electric motor, including a stator and an outer rotor; the stator is installed inside the outer rotor.

[0056] As an example, the motor includes, but is not limited to, an external rotor motor, specifically comprising a stator and an external rotor. The stator is installed inside the external rotor. When the motor is operating, the stator is fixed, and the external rotor rotates around the motor's shaft. In other words, the external rotor housing can rotate around the motor's shaft. The external rotor includes a permanent magnet and an external rotor housing. During installation, the permanent magnet is placed on the inner wall of the external rotor housing, providing the magnetic field required by the motor. The external rotor housing includes a main body 1 and an air guide 2. The main body 1 includes a tubular body 11 and an end panel 12 disposed at one end of the tubular body 11. Multiple air inlets 3 are provided on the end panel 12 in the circumferential direction, and the multiple air inlets 3 are spaced apart along the circumferential direction of the main body 1. Cold air outside the main body 1 can enter the main body 1 through the multiple air inlets 3. The other end of the main body 1 serves as an air outlet, from which hot air inside the main body 1 can flow out. Hot air inside the main body 1 can flow to the outside of the main body 1 through the multiple air inlets 3. Each air inlet 3 is equipped with at least one air guide 2. With this configuration, when the air guide 2 is outside the main body shell 1, the outer rotor shell rotates, and the air guide 2 can force the cold air outside the main body shell 1 into the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. When the air guide 2 is inside the main body shell 1, the outer rotor shell rotates, and the air guide 2 can force the hot air inside the main body shell 1 to the outside of the main body shell 1 through the air inlet 3, thereby achieving the purpose of heat dissipation for the entire motor. Compared with the existing technology, this method improves the heat dissipation effect, reduces costs, and increases the utilization rate of the motor without the need for additional heat dissipation equipment.

[0057] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An outer rotor housing, characterized in that, It includes a main body shell and a wind guiding member; The main body shell includes a tubular main body and an end panel provided at one end of the tubular main body. A plurality of air inlets are provided on the end panel along the circumferential direction; Each of the air inlets is correspondingly provided with at least one of the wind guiding members, which is used to introduce the cold air outside the main body shell into the main body shell through the air inlet or to guide the hot air inside the main body shell to the outside of the main body shell through the air inlet.

2. The outer rotor housing according to claim 1, wherein The wind guiding member includes any one of a wind guiding plate, a wind guiding shell, and a wind guiding fan blade.

3. The outer rotor housing according to claim 2, wherein Each of the wind guiding plates is located in the side region of the air inlet. One side of each of the wind guiding plates is connected to one side wall of the air inlet, and this side wall is the side wall adjacent to the inner side wall and / or the outer side wall of the air inlet; At least a part of the wind guiding plate is located outside or inside the main body shell, and there is an included angle between the wind guiding plate and the end panel.

4. The outer rotor housing according to claim 2, wherein, Each of the wind guiding plates is located in the middle region of the air inlet. The opposite two sides of each of the wind guiding plates are respectively connected to the inner and outer side walls of the air inlet; At least a part of the wind guiding plate is located outside or inside the main body shell, and there is an included angle between the wind guiding plate and the end panel.

5. The outer rotor housing according to claim 2, wherein The wind guiding shell includes an arc-shaped shell body and two shell walls extending from opposite sides of the arc-shaped shell body in the same direction; One side of the arc-shaped shell body is connected to one side wall of the air inlet, and this side wall is the side wall adjacent to the inner side wall and / or the outer side wall of the air inlet; One sides of the two shell walls are respectively connected to the inner and outer side walls of the air inlet; The arc-shaped shell body and the two shell walls are located outside or inside the main body shell to form an air inlet channel or an air exhaust channel communicating with the air inlet.

6. The outer rotor housing according to claim 2, wherein The wind guiding fan blade includes a blade and a fixing part provided at one end of the blade; The fixing part is installed on the end panel and is located in the region where the inner side wall of the air inlet is located or the region where the outer side wall of the air inlet is located; The blade is located inside the air inlet. At least a part of the blade is located outside or inside the main body shell, and there is an included angle between the plane where the blade is located and the end panel.

7. The outer rotor housing according to claim 1, wherein An air exhaust frame is installed on the tubular main body. The air exhaust frame includes a fixing sleeve and at least one air stirring member extending from the periphery of the fixing sleeve in the radial direction of the fixing sleeve; The fixing sleeve is sleeved on the tubular main body and is located in the region close to the end panel; The air stirring member is used to stir the cold air outside the main body shell.

8. The outer rotor housing according to claim 7, wherein The air stirring member includes a support plate extending in the radial direction of the fixing sleeve and a wind blocking plate extending from one side edge of the support plate in the axial direction of the fixing sleeve; The support plate and the wind blocking plate cooperate to form an air exhaust channel.

9. An external rotor, characterized in that, It includes a permanent magnet and the outer rotor shell according to any one of claims 1-8; the permanent magnet is arranged on the inner wall of the outer rotor shell.

10. A motor, characterized in that, It includes a stator and the outer rotor according to claim 9; the stator is installed inside the outer rotor.

Images