A motor with an internal heat dissipation structure

Abstract

The utility model relates to the technical field of motors, and specifically to a motor with an internal heat dissipation structure. The motor with an internal heat dissipation structure can achieve heat dissipation inside the motor. Specifically, the air inlet heat dissipation component and the air outlet heat dissipation group are used to achieve air inlet and air outlet inside the motor under the rotation of the outer rotor, and then the heat dissipation channel formed between the air inlet heat dissipation component, the air outlet heat dissipation component and the auxiliary heat dissipation component is combined to guide the outlet air with the heat inside the motor, thereby achieving heat dissipation inside the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor with an internal heat dissipation structure. Background Art

[0002] When the motor is working, heat is generated. The rotor keeps rotating, causing the motor to heat up. If the motor heats up for a long time, it is easy to cause thermal damage to the internal components of the motor and reduce the service life of the motor. Therefore, the motor needs to be cooled. However, the commonly used motor cooling requires external auxiliary cooling, that is, there is generally no cooling structure inside the motor, which greatly reduces the cooling efficiency.

[0003] In summary, it is necessary to provide a motor with an internal heat dissipation structure to solve the problem in the prior art that auxiliary heat dissipation is used on the outside of the motor, resulting in low heat dissipation efficiency inside the motor. Utility Model Content

[0004] The utility model aims to provide a motor with an internal heat dissipation structure, and the specific technical solution is as follows:

[0005] A motor with an internal heat dissipation structure, the motor comprising a stator, an outer rotor and a control mechanism, the outer rotor being coaxially arranged on the outside of the stator and rotatable relative to the stator; the control mechanism being arranged on one axial end of the stator and connected to the stator and the outer rotor; the outer rotor being rotatable relative to the control mechanism; the internal heat dissipation structure comprising an air inlet heat dissipation component, an air outlet heat dissipation component and an auxiliary heat dissipation component; the air inlet heat dissipation component and the air outlet heat dissipation component being detachably arranged on the axial ends of the outer rotor respectively; the auxiliary heat dissipation component being coaxially arranged between the outer rotor and the stator and fixedly connected to the stator, with a gap between the auxiliary heat dissipation component and the outer rotor; the auxiliary heat dissipation component being connected to the control mechanism at one axial end; a heat dissipation channel being formed between the air inlet heat dissipation component, the air outlet heat dissipation component and the auxiliary heat dissipation component.

[0006] Optionally, the air inlet and heat dissipation assembly includes a first inner ring member, a first outer ring member and air inlet and heat dissipation fins; the first outer ring member is coaxially arranged on the outside of the first inner ring member; the first inner ring member is detachably arranged on the rotating shaft of the outer rotor, and the first outer ring member is detachably arranged on the outer shell of the outer rotor; the number of the air inlet and heat dissipation fins is multiple, and all of them are detachably arranged between the first inner ring member and the first outer ring member.

[0007] Optionally, the air inlet surface of the air inlet heat dissipation fin is inclined, and an angle between the air inlet direction on the air inlet surface and the rotation direction of the rotating shaft of the outer rotor is an obtuse angle.

[0008] Optionally, first connecting holes are provided on both ends of the air inlet heat dissipation fins, and first fixing holes adapted to the first connecting holes are provided on the first inner ring member and the first outer ring member; and reinforcing ribs are provided between the first inner ring member and the first outer ring member.

[0009] Optionally, a plurality of first fastening holes are provided on the first inner ring member and the first outer ring member, and a plurality of first mounting holes matching the first fastening holes are provided on the rotating shaft and the outer shell of the outer rotor.

[0010] Optionally, the air outlet heat dissipation assembly includes a second inner ring member, a second outer ring member and air outlet heat dissipation fins; the second outer ring member is coaxially arranged on the outer side of the second inner ring member; the second inner ring member is detachably arranged on the rotating shaft of the outer rotor, and the second outer ring member is detachably arranged on the outer shell of the outer rotor; the number of the air outlet heat dissipation fins is multiple, and all of them are detachably arranged between the second inner ring member and the second outer ring member.

[0011] Optionally, the air outlet surface of the air outlet heat dissipation fin is inclined, and an angle between the air outlet direction on the air outlet surface and the rotation direction of the shaft of the outer rotor is an obtuse angle.

[0012] Optionally, second connecting holes are provided on both ends of the air outlet heat dissipation fins, and second fixing holes adapted to the second connecting holes are provided on the second inner ring member and the second outer ring member; and reinforcing ribs are provided between the second inner ring member and the second outer ring member.

[0013] Optionally, a plurality of second fastening holes are provided on the second inner ring member and the second outer ring member, and a plurality of second mounting holes adapted to the second fastening holes are provided on the rotating shaft and the outer shell of the outer rotor.

[0014] Optionally, the auxiliary heat dissipation assembly includes a first auxiliary heat dissipation fin and a second auxiliary heat dissipation fin; the number of the first auxiliary heat dissipation fins is multiple and they are annularly arranged between the outer rotor and the stator; the number of the second auxiliary heat dissipation fins is multiple and they are annularly arranged on the control mechanism; the second auxiliary heat dissipation fins are connected to the first auxiliary heat dissipation fins, and the two form a heat dissipation channel between the air inlet heat dissipation assembly and the air outlet heat dissipation assembly.

[0015] The application of the technical solution of the utility model has at least the following beneficial effects:

[0016] The utility model provides a motor with an internal heat dissipation structure, which can achieve heat dissipation inside the motor. Specifically, the air inlet heat dissipation component and the air outlet heat dissipation group are used to achieve air inlet and air outlet inside the motor under the rotation of the outer rotor, and then the heat dissipation channel formed between the air inlet heat dissipation component, the air outlet heat dissipation component and the auxiliary heat dissipation component is combined to guide the outlet air with the heat inside the motor, thereby achieving heat dissipation inside the motor.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the structure of a motor with an internal heat dissipation structure in an embodiment (the direction of the arrow in the figure indicates the rotation direction of the outer rotor shaft);

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle air inlet heat dissipation assembly, the stator, the outer rotor and the first auxiliary heat dissipation fin assembly (the direction of the arrow in the figure indicates the rotation direction of the outer rotor shaft);

[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the central air outlet heat dissipation assembly, the stator, the outer rotor and the first auxiliary heat dissipation fin assembly (the direction of the arrow in the figure indicates the rotation direction of the outer rotor shaft);

[0022] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle air inlet heat sink fin;

[0023] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle air outlet heat dissipation fin;

[0024] Among them, 1. air inlet heat dissipation component, 1.1. first inner ring component, 1.2. first outer ring component, 1.3. air inlet heat dissipation fins, 1.3.1. air inlet surface, 2. air outlet heat dissipation component, 2.1. second inner ring component, 2.2. second outer ring component, 2.3. air outlet heat dissipation fins, 2.3.1. air outlet surface, 3. auxiliary heat dissipation component, 3.1. first auxiliary heat dissipation fins, 3.2. second auxiliary heat dissipation fins, A1. stator, A2. outer rotor, A2.1. rotating shaft, A2.2. outer casing, A3. control mechanism. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0026] Example:

[0027] See also Figure 1-Figure 5 , a motor with an internal heat dissipation structure, the motor includes a stator A1, an outer rotor A2 and a control mechanism A3, the outer rotor A2 is coaxially arranged on the outside of the stator A1 and is rotatable relative to the stator A1; the control mechanism A3 is arranged on one axial end of the stator A1 and is connected to the stator A1 and the outer rotor A2; the outer rotor A2 is rotatable relative to the control mechanism A3; the internal heat dissipation structure includes an air inlet heat dissipation component 1, an air outlet heat dissipation component 2 and an auxiliary heat dissipation component 3; the air inlet heat dissipation component 1 and the air outlet heat dissipation component 2 are respectively detachably arranged on the axial ends of the outer rotor A2; the auxiliary heat dissipation component 3 is coaxially arranged between the outer rotor A2 and the stator A1, and is fixedly connected to the stator A1, and there is a gap between the auxiliary heat dissipation component 3 and the outer rotor A2 to avoid affecting the rotation of the outer rotor A2; the auxiliary heat dissipation component 3 is connected to the control mechanism A3 at one axial end; a heat dissipation channel is formed between the air inlet heat dissipation component 1, the air outlet heat dissipation component 2 and the auxiliary heat dissipation component 3.

[0028] See also Figure 2 and Figure 4 The air inlet and heat dissipation assembly 1 includes a first inner ring member 1.1, a first outer ring member 1.2 and air inlet and heat dissipation fins 1.3; the first outer ring member 1.2 is coaxially arranged on the outer side of the first inner ring member 1.1; the first inner ring member 1.1 is detachably arranged on the rotating shaft A2.1 of the outer rotor A2, and the first outer ring member 1.2 is detachably arranged on the outer shell A2.2 of the outer rotor A2; the number of the air inlet and heat dissipation fins 1.3 is multiple, and all of them are detachably arranged between the first inner ring member 1.1 and the first outer ring member 1.2.

[0029] See also Figure 4 The air inlet surface 1.3.1 of the air inlet heat dissipation fin 1.3 is tilted, and the angle between the air inlet direction on the air inlet surface 1.3.1 and the rotation direction of the rotating shaft A2.1 of the outer rotor A2 is an obtuse angle, which is convenient for efficient and rapid air intake.

[0030] A first connecting hole is provided on both ends of the air inlet heat dissipation fin 1.3, and a first fixing hole adapted to the first connecting hole is provided on the first inner ring member 1.1 and the first outer ring member 1.2. Connectors (such as bolts) are inserted into the first connecting hole and the adapted first fixing hole, so that the two ends of the air inlet heat dissipation fin 1.3 can be detachably connected with the first inner ring member 1.1 and the first outer ring member 1.2.

[0031] Reinforcing ribs are provided between the first inner annular member 1.1 and the first outer annular member 1.2 to enhance the firmness therebetween.

[0032] A plurality of first fastening holes are arranged on the first inner ring member 1.1 and the first outer ring member 1.2, and a plurality of first mounting holes adapted to the first fastening holes are arranged on the rotating shaft A2.1 and the outer shell A2.2 of the outer rotor A2. Connectors (such as bolts) are inserted into the first fastening holes and the adapted first mounting holes, so as to realize a detachable connection between the first inner ring member 1.1 and the rotating shaft A2.1 of the outer rotor A2, and a detachable connection between the first outer ring member 1.2 and the outer shell A2.2 of the outer rotor A2.

[0033] See also Figure 3 and Figure 5 The air outlet heat dissipation assembly 2 includes a second inner ring member 2.1, a second outer ring member 2.2 and air outlet heat dissipation fins 2.3; the second outer ring member 2.2 is coaxially arranged on the outer side of the second inner ring member 2.1; the second inner ring member 2.1 is detachably arranged on the rotating shaft A2.1 of the outer rotor A2, and the second outer ring member 2.2 is detachably arranged on the outer shell A2.2 of the outer rotor A2; the number of the air outlet heat dissipation fins 2.3 is multiple, and all of them are detachably arranged between the second inner ring member 2.1 and the second outer ring member 2.2.

[0034] See also Figure 5 The air outlet surface 2.3.1 of the air outlet heat dissipation fin 2.3 is inclined, and the angle between the air outlet direction on the air outlet surface 2.3.1 and the rotation direction of the rotating shaft A2.1 of the outer rotor A2 is an obtuse angle, which is convenient for efficient and rapid air outlet.

[0035] Second connecting holes are provided on both ends of the air outlet heat dissipation fins 2.3, and second fixing holes adapted to the second connecting holes are provided on the second inner ring member 2.1 and the second outer ring member 2.2. Connectors (such as bolts) are inserted into the second connecting holes and the adapted second fixing holes, so that the two ends of the air outlet heat dissipation fins 2.3 can be detachably connected with the second inner ring member 2.1 and the second outer ring member 2.2.

[0036] Reinforcing ribs are provided between the second inner annular member 2.1 and the second outer annular member 2.2 to enhance the firmness therebetween.

[0037] A plurality of second fastening holes are arranged on the second inner ring member 2.1 and the second outer ring member 2.2, and a plurality of second mounting holes adapted to the second fastening holes are arranged on the rotating shaft A2.1 and the outer shell A2.2 of the outer rotor A2. Connectors (such as bolts) are inserted into the second fastening holes and the adapted second mounting holes, so as to realize a detachable connection between the second inner ring member 2.1 and the rotating shaft A2.1 of the outer rotor A2, and a detachable connection between the second outer ring member 2.2 and the outer shell A2.2 of the outer rotor A2.

[0038] The auxiliary heat dissipation component 3 includes a first auxiliary heat dissipation fin 3.1 and a second auxiliary heat dissipation fin 3.2; the first auxiliary heat dissipation fin 3.1 is multiple in number and is annularly arranged between the outer rotor A2 and the stator A1; the second auxiliary heat dissipation fin 3.2 is multiple in number and is annularly arranged on the control mechanism A3; the second auxiliary heat dissipation fin 3.2 is connected to the first auxiliary heat dissipation fin 3.1, and the two form a heat dissipation channel between the air inlet heat dissipation component 1 and the air outlet heat dissipation component 2.

[0039] The heat dissipation principle of the motor with internal heat dissipation structure is as follows:

[0040] The air inlet heat dissipation component 1 and the air outlet heat dissipation group are used to realize the air inlet and air outlet of the motor under the rotation of the outer rotor A2, and the heat dissipation channel formed by the air inlet heat dissipation component 1, the air outlet heat dissipation component 2 and the auxiliary heat dissipation component 3 is combined to guide the air with the heat inside the motor, thereby completing the heat dissipation inside the motor;

[0041] Specifically, in the air inlet heat dissipation component 1, the air inlet surface 1.3.1 of the air inlet heat dissipation fin 1.3 is tilted, and the angle between the air inlet direction on the air inlet surface 1.3.1 and the rotation direction of the rotating shaft A2.1 of the outer rotor A2 is an obtuse angle, which is convenient for efficient and rapid air intake; in the air outlet heat dissipation component 2, the air outlet surface 2.3.1 of the air outlet heat dissipation fin 2.3 is tilted, and the angle between the air outlet direction on the air outlet surface 2.3.1 and the rotation direction of the rotating shaft A2.1 of the outer rotor A2 is an obtuse angle, which is convenient for efficient and rapid air outlet.

[0042] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A motor with an internal heat dissipation structure, the motor comprising a stator (A1), an outer rotor (A2) and a control mechanism (A3), the outer rotor (A2) being coaxially arranged on the outside of the stator (A1) and rotatable relative to the stator (A1); the control mechanism (A3) being arranged at one axial end of the stator (A1) and connected to the stator (A1) and the outer rotor (A2); the outer rotor (A2) being rotatable relative to the control mechanism (A3); characterized in that: The internal heat dissipation structure comprises an air inlet heat dissipation component (1), an air outlet heat dissipation component (2) and an auxiliary heat dissipation component (3); the air inlet heat dissipation component (1) and the air outlet heat dissipation component (2) are respectively detachably arranged at two axial ends of the outer rotor (A2); the auxiliary heat dissipation component (3) is coaxially arranged between the outer rotor (A2) and the stator (A1), and is fixedly connected to the stator (A1), with a gap between the outer rotor (A2); the auxiliary heat dissipation component (3) is connected to the control mechanism (A3) at one axial end; and a heat dissipation channel is formed between the air inlet heat dissipation component (1), the air outlet heat dissipation component (2) and the auxiliary heat dissipation component (3).

2. The motor with an internal heat dissipation structure according to claim 1, characterized in that: The air inlet heat dissipation assembly (1) comprises a first inner ring member (1.1), a first outer ring member (1.2) and air inlet heat dissipation fins (1.3); the first outer ring member (1.2) is coaxially arranged on the outer side of the first inner ring member (1.1); the first inner ring member (1.1) is detachably arranged on the rotating shaft (A2.1) of the outer rotor (A2), and the first outer ring member (1.2) is detachably arranged on the outer shell (A2.2) of the outer rotor (A2); there are a plurality of air inlet heat dissipation fins (1.3), and all of them are detachably arranged between the first inner ring member (1.1) and the first outer ring member (1.2).

3. The motor with an internal heat dissipation structure according to claim 2, characterized in that: The air inlet surface (1.3.1) of the air inlet heat dissipation fin (1.3) is arranged to be inclined, and the angle between the air inlet direction on the air inlet surface (1.3.1) and the rotation direction of the rotating shaft (A2.1) of the outer rotor (A2) is an obtuse angle.

4. The motor with an internal heat dissipation structure according to claim 2, characterized in that: First connection holes are provided at both ends of the air inlet heat dissipation fin (1.3); first fixing holes adapted to the first connection holes are provided on the first inner ring member (1.1) and the first outer ring member (1.2); and reinforcing ribs are provided between the first inner ring member (1.1) and the first outer ring member (1.2).

5. The motor with an internal heat dissipation structure according to claim 2, characterized in that: A plurality of first fastening holes are arranged on the first inner ring member (1.1) and the first outer ring member (1.2), and a plurality of first mounting holes matching the first fastening holes are arranged on the rotating shaft (A2.1) and the outer shell (A2.2) of the outer rotor (A2).

6. The motor with an internal heat dissipation structure according to claim 1, characterized in that: The air outlet heat dissipation assembly (2) comprises a second inner ring member (2.1), a second outer ring member (2.2) and air outlet heat dissipation fins (2.3); the second outer ring member (2.2) is coaxially arranged on the outer side of the second inner ring member (2.1); the second inner ring member (2.1) is detachably arranged on the rotating shaft (A2.1) of the outer rotor (A2), and the second outer ring member (2.2) is detachably arranged on the outer shell (A2.2) of the outer rotor (A2); the number of the air outlet heat dissipation fins (2.3) is plural, and all of them are detachably arranged between the second inner ring member (2.1) and the second outer ring member (2.2).

7. The motor with an internal heat dissipation structure according to claim 6, characterized in that: The air outlet surface (2.3.1) of the air outlet heat dissipation fin (2.3) is arranged to be inclined, and the angle between the air outlet direction on the air outlet surface (2.3.1) and the rotation direction of the rotating shaft (A2.1) of the outer rotor (A2) is an obtuse angle.

8. The motor with an internal heat dissipation structure according to claim 6, characterized in that: Second connection holes are provided at both ends of the air outlet heat dissipation fins (2.3); second fixing holes adapted to the second connection holes are provided on the second inner ring member (2.1) and the second outer ring member (2.2); and reinforcing ribs are provided between the second inner ring member (2.1) and the second outer ring member (2.2).

9. The motor with an internal heat dissipation structure according to claim 6, characterized in that: A plurality of second fastening holes are arranged on the second inner ring member (2.1) and the second outer ring member (2.2), and a plurality of second mounting holes matching the second fastening holes are arranged on the rotating shaft (A2.1) and the outer shell (A2.2) of the outer rotor (A2).

10. The motor with an internal heat dissipation structure according to any one of claims 1 to 9, characterized in that: The auxiliary heat dissipation assembly (3) comprises a first auxiliary heat dissipation fin (3.1) and a second auxiliary heat dissipation fin (3.2); the first auxiliary heat dissipation fin (3.1) is in plurality and is circumferentially arranged between the outer rotor (A2) and the stator (A1); the second auxiliary heat dissipation fin (3.2) is in plurality and is circumferentially arranged on the control mechanism (A3); the second auxiliary heat dissipation fin (3.2) is connected to the first auxiliary heat dissipation fin (3.1), and a heat dissipation channel is formed between the second auxiliary heat dissipation fin (3.2) and the air inlet heat dissipation assembly (1) and the air outlet heat dissipation assembly (2).

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