Stator support, motor and aircraft

Abstract

The utility model provides a stator support, a motor and an aircraft. The stator support comprises a support body provided with an air duct, and a heat dissipation piece installed on the support body and located in the air duct. A heat exchange oil channel is formed in the heat dissipation piece, and the heat dissipation piece is used for conducting air cooling heat dissipation on cooling oil flowing through the heat exchange oil channel through airflow flowing through the air channel. The stator bracket is convenient to disassemble, assemble, replace and maintain, improves the heat dissipation efficiency, reduces the weight of the stator bracket, and facilitates the light weight of the motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a stator bracket, a motor and an aircraft. Background Art

[0002] In the related art, the inner surface of the stator bracket of the motor can be provided with an integrally formed heat exchange rib, so as to exchange heat with the external convection air through the heat exchange rib to achieve heat dissipation of the motor. The disadvantage of the above scheme is that since the heat exchange rib and the stator bracket need to be integrally manufactured, the two need to be manufactured using the same material; and considering the functional requirements such as the structural strength of each component in the motor or the manufacturing method such as die-casting mold, the selectivity of the manufacturing materials of the stator bracket and the heat exchange rib is relatively limited, and the selected materials often have poor thermal conductivity. Therefore, in order to ensure the heat dissipation effect of the motor, the thickness and spacing of the heat exchange rib are required to be set larger, but the space available for arranging the heat exchange rib in the motor is small, which will result in a smaller heat dissipation area arranged on the motor, and thus lead to low heat dissipation efficiency. Utility Model Content

[0003] The utility model aims at the technical problems of low heat dissipation efficiency of motors in the prior art and provides a stator bracket, a motor and an aircraft.

[0004] In view of the above technical problems, an embodiment of the utility model provides a stator bracket, including a bracket body provided with an air duct, and a heat sink installed on the bracket body and located in the air duct; a heat exchange oil channel is provided in the heat sink, and the heat sink is used to perform air cooling and heat dissipation on the cooling oil flowing through the heat exchange oil channel through the air flow flowing through the air duct.

[0005] Optionally, the heat sink includes at least two heat exchange blocks installed in the air duct, each of the heat exchange blocks is provided with a heat exchange space, and all the heat exchange spaces are connected in sequence to form the heat exchange oil channel.

[0006] Optionally, the heat sink further includes heat exchange ribs; the heat exchange ribs are arranged on the outer side wall of the heat exchange block at a position opposite to the heat exchange space.

[0007] Optionally, the heat exchange block includes a heat exchange body and a delivery pipe; the heat exchange space is arranged on the heat exchange body and connected to the delivery pipe, and connection holes connected to the air duct are arranged one by one at positions opposite to the delivery pipe on the bracket body; the delivery pipes are inserted into the connection holes one by one; all the heat exchange spaces are connected in sequence through the delivery pipe to form the heat exchange oil channel.

[0008] Optionally, the delivery pipe includes an input pipe for inputting cooling oil into the heat exchange oil channel, an output pipe for outputting cooling oil from the heat exchange oil channel, and a connecting pipe for cooling oil to flow in the heat exchange oil channel; the input pipe, output pipe and connecting pipe are connected to each other.

[0009] Optionally, the heat sink further comprises a connecting member, wherein the connecting member and the heat exchange body are located on opposite sides of the connecting hole; the connecting member is connected between two adjacent delivery pipes, and a connecting oil passage connecting between the two adjacent delivery pipes is provided on the connecting member.

[0010] Optionally, a first mounting portion is provided on the bracket body; a second mounting portion adapted to the first mounting portion is provided on the heat sink; and the heat sink is mounted on the first mounting portion of the bracket body via the second mounting portion.

[0011] Optionally, the first mounting portion is a first mounting hole provided on the bracket body;

[0012] A mounting plate is provided on the heat exchange body or the delivery pipe, and the second mounting portion is a second mounting hole provided on the mounting plate; the bracket body is bolted to the heat sink through the first mounting hole and the second mounting hole.

[0013] A motor comprises the stator bracket.

[0014] An aircraft comprises the motor.

[0015] In the utility model, by setting an air duct on the bracket body and setting a heat sink with a heat exchange oil passage in the air duct, when the motor is running, the heat generated by the motor can be carried to the heat exchange oil passage through the cooling oil, and then the cooling oil in the heat exchange oil passage is cooled by air through the airflow flowing through the air duct. The heat sink provided by the utility model is easy to disassemble, replace, and maintain; and the heat sink can be made of a material different from that of the bracket body. Furthermore, while the material of the bracket body can meet the functional requirements of each component in the motor, the material of the heat sink can be selected from a material with a low density and a high thermal conductivity. Furthermore, while ensuring that the motor can operate normally, the heat dissipation efficiency can be further improved, and at the same time, the weight of the stator bracket is reduced, which is conducive to the lightweight of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of a stator bracket provided in one embodiment of the utility model.

[0018] Figure 2It is a cross-sectional view of a stator bracket provided in one embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of a support body of a stator support provided in one embodiment of the utility model.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of a support body of a stator support provided by an embodiment of the utility model from another perspective.

[0021] Figure 5 It is a bottom view of a support body of a stator support provided in one embodiment of the utility model.

[0022] Figure 6 It is a top view of a support body of a stator support provided in one embodiment of the utility model.

[0023] Figure 7 It is a structural schematic diagram of a heat exchange block of a stator bracket provided in one embodiment of the utility model.

[0024] Figure 8 It is a cross-sectional view of a heat exchange block of a stator bracket provided in one embodiment of the utility model.

[0025] Fig. 9 It is a structural schematic diagram of a heat sink of a stator bracket provided in one embodiment of the utility model.

[0026] The reference numerals in the specification are as follows:

[0027] 100, bracket body; 110, air duct; 120, connecting hole; 130, mounting groove; 140, first mounting part; 200, heat sink; 210, heat exchange oil channel; 220, heat exchange block; 221, heat exchange space; 222, heat exchange body; 223, delivery pipe; 2231, input pipe; 2232, output pipe; 2233, connecting pipe; 230, heat exchange rib; 240, connector; 250, mounting plate; 251, second mounting part. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0030] like Figures 1 to 9 As shown, an embodiment of the utility model provides a stator bracket, including a bracket body 100 provided with an air duct 110, and a heat sink 200 installed on the bracket body 100 and located in the air duct 110; a heat exchange oil channel 210 is provided in the heat sink 200, and the heat sink 200 is used to perform air cooling and heat dissipation on the cooling oil flowing through the heat exchange oil channel 210 through the air flow flowing through the air duct 110.

[0031] It can be understood that the stator bracket can be set in different motors as needed, especially various high-power and long-duration motors, as long as the motor is placed in an environment where external airflow can pass through the air duct, so that the airflow can pass through the air duct 110 to air-cool the cooling oil in the heat exchange oil passage 210 of the heat sink 200 located in the air duct 110. Among them, the structure and shape of the air duct 110 can be set as required, as long as the airflow can flow through the air duct 110. The heat sink 200 is located in the air duct 110 and uses the airflow in the air duct 110 to air-cool the cooling oil flowing through the heat exchange oil passage 210. It can be installed on the bracket body 100, and can also be installed in other parts of the motor through other structures.

[0032] The material of the heat sink 200 can be set according to actual conditions. For example, a material with low density and high thermal conductivity can be used, so as to improve the heat dissipation efficiency and reduce the weight of the stator bracket. The heat sink 200 can be composed of a heat exchange block 220, or a plurality of heat exchange blocks 220 that are interconnected, as long as a heat exchange oil passage 210 that allows cooling oil to flow can be formed in the heat sink 200. The cooling oil can absorb the heat of the bracket body 100 or other components and then flow into the heat dissipation oil passage 210, and then the cooling oil in the heat dissipation oil passage 210 is cooled by air through the air flow flowing through the air duct 110, thereby cooling the cooling oil.

[0033] In this embodiment, the stator bracket can be used in a motor for driving the fan blades to rotate, such as a motor for driving the blades to rotate in an aircraft, so that when the motor is running, the fan blades can be driven to rotate so that the flow rate of the airflow entering the air duct 110 is faster, thereby obtaining a better air-cooling and heat dissipation effect. When the motor is running, the motor generates heat, and the cooling oil absorbs the generated heat and flows into the heat exchange oil channel 210. At this time, since the motor drives the fan blades to rotate, the fan blades drive the airflow to accelerate through the air duct 110, so that the cooling oil in the heat exchange oil channel 210 located in the air duct 110 can be air-cooled and heat dissipated.

[0034] In the above embodiment of the utility model, by setting the air duct 110 on the bracket body 100, and setting the heat sink 200 with the heat exchange oil passage 210 in the air duct 110, when the motor is running, the heat generated by the motor can be carried to the heat exchange oil passage 210 through the cooling oil, and then the cooling oil in the heat exchange oil passage 210 is cooled by air through the airflow flowing through the air duct 110. The heat sink 200 provided by the utility model is easy to disassemble, replace, and maintain; the heat sink 200 can be made of a material different from the bracket body 100, and then, while the material of the bracket body 100 can meet the functional requirements of each component in the motor, the material of the heat sink 200 can be selected from a material with low density and high thermal conductivity, thereby improving the heat dissipation efficiency and reducing the weight of the stator bracket.

[0035] like Figures 2 to 9 As shown, in one embodiment, the heat sink 200 includes at least two heat exchange blocks 220 installed in the air duct 110, each of the heat exchange blocks 220 is provided with a heat exchange space 221, and all the heat exchange spaces 221 are connected in sequence to form the heat exchange oil passage 210. It can be understood that all the heat exchange blocks 220 are in the air duct 110. The shape and size of the heat exchange block 220 can be set according to actual conditions, as long as the heat exchange spaces 221 of all the heat exchange blocks 220 are connected in sequence to form the heat exchange oil passage 210 located in the air duct 110.

[0036] In this embodiment, providing a plurality of the heat exchange blocks 220 can reduce the difficulty of processing the heat sink 200, and at the same time can make the heat sink 200 more flexibly and efficiently arranged in the air duct 110, thereby improving the space utilization of the air duct 110, and further arranging more heat dissipation area in the air duct 110, further improving the heat dissipation efficiency.

[0037] like Figure 7As shown, in one embodiment, the heat sink 200 further includes a heat exchange rib 230; the heat exchange rib 230 is arranged on the outer wall of the heat exchange block 220 at a position opposite to the heat exchange space 221. It can be understood that the heat exchange rib 230 can be a heat dissipation fin or a heat dissipation pipe used to increase the heat dissipation area of ​​the heat exchange block 220. The heat exchange rib 230 is arranged on the outer wall of the heat exchange block 220, thereby increasing the heat dissipation area of ​​the heat exchange block 220. When the air flow passes through the air duct 110, it can directly contact the surface of the heat exchange rib 230, thereby taking away the heat on the heat exchange rib 230, avoiding heat accumulation on the heat exchange block 220, and thus improving the heat dissipation efficiency and heat dissipation effect of the heat exchange block 220. Among them, the shape of the heat exchange rib 230 can be set as needed, as long as the heat dissipation area of ​​the heat exchange block 220 can be increased, thereby improving the heat dissipation efficiency of the heat exchange block 220. The heat exchange rib 230 may be made of a material with low density and high thermal conductivity, thereby improving heat dissipation efficiency while reducing the weight of the stator bracket. The connection method between the heat exchange rib 230 and the heat exchange block 220 includes, but is not limited to, one or more of welding, bonding, clamping or integral molding, as long as the heat exchange rib 230 and the heat exchange block 220 can conduct heat to each other and are firmly connected.

[0038] like Figures 7 to 9As shown, in one embodiment, the heat exchange block 220 includes a heat exchange body 222 and a delivery pipe 223; the heat exchange space 221 is arranged on the heat exchange body 222 and connected to the delivery pipe 223, and the position on the support body 100 opposite to the delivery pipe 223 is provided with a connection hole 120 connected to the air duct 110 in a one-to-one correspondence; the delivery pipe 223 is plugged into the connection hole 120 in a one-to-one correspondence; all the heat exchange spaces 221 are connected in sequence through the delivery pipe 223 to form the heat exchange oil channel 210. It can be understood that the cooling oil located outside the stator support can enter the heat exchange oil channel 210 through the delivery pipe 223, and then perform air cooling and heat dissipation. The size, shape and number of the connection hole 120 can be set according to actual conditions, and the size of the connection hole 120 is adapted to the delivery pipe 223 so as to be plugged into the delivery pipe 223. In this embodiment, the connection holes 120 correspond to the positions of the delivery pipes 223 one by one, and the delivery pipes 223 are inserted into the connection holes 120 one by one. The outer wall of the delivery pipe 223 can fit the inner wall of the connection hole 120, thereby preventing foreign matter from entering the air duct 110 from the gap between the connection hole 120 and the delivery pipe 223. The shape and structure of the heat exchange space 221 can be set according to demand. For example, the heat exchange space 221 can be an integral space for easy manufacturing, or it can be composed of a plurality of connected subspaces or a bent tubular space, so that the cooling oil can flow fully in the heat exchange space 221 to a greater extent, thereby improving the heat dissipation effect.

[0039] like Figures 7 to 9 As shown, in one embodiment, the delivery pipe 223 includes an input pipe 2231 for inputting cooling oil into the heat exchange oil channel 210, an output pipe 2232 for outputting cooling oil from the heat exchange oil channel 210, and a connecting pipe 2233 for cooling oil to flow in the heat exchange oil channel 210; the input pipe 2231, the output pipe 2232 and the connecting pipe 2233 are connected to each other.

[0040] It can be understood that at least two delivery pipes 223 can be provided on each heat exchange block 220, so that the cooling oil can flow into the heat exchange body 222 through one of the delivery pipes 223 and flow out through the other delivery pipe 223. Fig. 9As shown, when a plurality of the heat exchange blocks 220 are connected in sequence, one of the delivery pipes 223 of at least one heat exchange block 220 among all the heat exchange blocks 220 will become an input pipe 2231 for supplying cooling oil to the heat exchange oil passage 210; and one of the delivery pipes 223 of at least one heat exchange block 220 will become an output pipe 2232 for supplying cooling oil to the heat exchange oil passage 210; and other delivery pipes 223 except the input pipe 2231 and the output pipe 2232 can be regarded as connecting pipes 2233. It can be understood that the input pipe 2231, the output pipe 2232 and the connecting pipe 2233 can be set to one or more, which can be set according to specific circumstances. In this embodiment, all input pipes 2231, all output pipes 2232 and all the heat exchange bodies 222 are interconnected through the connecting pipe 2233 to form the heat exchange oil channel 210. Cooling oil can be input into the heat exchange oil channel 210 through the input pipe 2231 and output from the heat exchange oil channel 210 through the output pipe 2232.

[0041] like Fig. 9 As shown, in one embodiment, the heat sink 200 further includes a connector 240, and the connector 240 and the heat exchange body 222 are located on opposite sides of the connection hole 120; the connector 240 is connected between two adjacent delivery pipes 223, and a connecting oil passage connecting the two adjacent delivery pipes 223 is provided on the connector 240. It can be understood that since the two adjacent delivery pipes 223 connected by the connector 240 belong to two adjacent heat exchange blocks 220 respectively, the two adjacent delivery pipes 223 connected by the connector 240 are both connecting pipes 2233, and at this time, the connecting oil passage on the connector 240 is used to connect the two connecting pipes 2233. Among them, the shape of the connector 240 can be set according to actual conditions, as long as the two adjacent delivery pipes 223 can be connected and kept sealed through the connecting oil passage provided therein. The connector 240 can be located in the air duct 110 or outside the air duct 110. The connecting member 240 may be connected to the bracket body 100 or may not be connected to the bracket body 100. The connecting oil passage may be a through hole provided on the connecting member 240, or may be a groove provided on the connecting member 240, and the groove may be fitted and connected with the stator body to form the connecting oil passage.

[0042] like Figures 2 to 9As shown, in one embodiment, the stator bracket is provided with a mounting groove 130, which is arranged between two adjacent connection holes 120 and is used to install the connector 240, so that the connector 240 can be embedded and installed in the bracket body 100 through the mounting groove 130, thereby avoiding increasing the volume of the bracket body 100. It is understandable that the connection method of the connector 240 and the bracket body 100 may also include but is not limited to welding (such as friction welding, etc.), bonding or clamping, etc., as long as the connecting oil channel arranged therein can connect the two adjacent delivery pipes 223 and keep them sealed.

[0043] like Figures 2 to 7 As shown, in one embodiment, the bracket body 100 is provided with a first mounting portion 140; the heat sink 200 is provided with a second mounting portion 251 adapted to the first mounting portion 140; the heat sink 200 is mounted on the first mounting portion 140 of the bracket body 100 through the second mounting portion 251. It can be understood that the first mounting portion 140 can be a screw hole, a through hole, a buckle or other elements. The first mounting portion 140 can be set on the bracket body 100 according to actual conditions, as long as it can be adapted to the second mounting portion 251, so that the heat sink 200 can be mounted on the first mounting portion 140 of the bracket body 100 through the second mounting portion 251.

[0044] like Figures 2 to 7 As shown, in one embodiment, the first mounting portion 140 is a first mounting hole provided on the bracket body 100; a mounting plate 250 is provided on the heat exchange body 222 or the delivery pipe 223, and the second mounting portion 251 is a second mounting hole provided on the mounting plate 250; the bracket body 100 is bolted to the heat sink 200 through the first mounting hole and the second mounting hole. It can be understood that the bolts can pass through the second mounting hole and the first mounting hole respectively to realize the screw fixing connection between the bracket body 100 and the heat exchange block 220, so that the heat sink 200 can be stably installed on the bracket body 100.

[0045] An embodiment of the utility model further provides a motor, comprising the stator bracket. The specific structure of the stator bracket can refer to the above embodiment, and will not be repeated here.

[0046] In the motor of the above embodiment of the utility model, by setting the air duct 110 on the bracket body 100, and setting the heat sink 200 with the heat exchange oil passage 210 in the air duct 110, when the motor is running, the heat generated by the motor can be carried to the heat exchange oil passage 210 through the cooling oil, and then the cooling oil in the heat exchange oil passage 210 is cooled by air through the airflow flowing through the air duct 110. The heat sink 200 provided by the utility model is easy to disassemble, replace, and maintain; the heat sink 200 can be made of a material different from the bracket body 100, and then, while the material of the bracket body 100 can meet the functional requirements of each component in the motor, the material of the heat sink 200 can be selected from a material with low density and high thermal conductivity, thereby improving the heat dissipation efficiency and reducing the weight of the stator bracket.

[0047] An embodiment of the utility model further provides an aircraft, comprising the motor. The specific structure of the motor can refer to the above embodiment, and will not be described in detail here.

[0048] In the aircraft of the above-mentioned embodiment of the utility model, by setting the air duct 110 on the bracket body 100 of the motor, and setting the heat sink 200 with the heat exchange oil passage 210 in the air duct 110, when the motor is running, the heat generated by the motor can be carried to the heat exchange oil passage 210 through the cooling oil, and then the cooling oil in the heat exchange oil passage 210 can be air-cooled and dissipated by the airflow flowing through the air duct 110. The heat sink 200 provided by the utility model is easy to disassemble, replace, and maintain; the heat sink 200 can be made of a material different from the bracket body 100, and then, while the material of the bracket body 100 can meet the functional requirements of each component in the motor, the material of the heat sink 200 can be selected from a material with low density and high thermal conductivity, thereby improving the heat dissipation efficiency and reducing the weight of the stator bracket.

[0049] The above are merely embodiments of the stator bracket, motor and aircraft of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stator bracket, characterized in that: It includes a bracket body provided with an air duct, and a heat sink installed on the bracket body and located in the air duct; a heat exchange oil channel is provided in the heat sink, and the heat sink is used to perform air cooling and heat dissipation on the cooling oil flowing through the heat exchange oil channel through the air flow flowing through the air duct.

2. The stator support according to claim 1, characterized in that: The heat sink comprises at least two heat exchange blocks installed in the air duct, each of the heat exchange blocks is provided with a heat exchange space, and all the heat exchange spaces are connected in sequence to form the heat exchange oil channel.

3. The stator support according to claim 2, characterized in that: The heat sink also includes heat exchange ribs; the heat exchange ribs are arranged on the outer side wall of the heat exchange block at a position opposite to the heat exchange space.

4. The stator support according to claim 2, characterized in that: The heat exchange block includes a heat exchange body and a delivery pipe; the heat exchange space is arranged on the heat exchange body and connected to the delivery pipe, and connection holes connected to the air duct are arranged one by one at positions opposite to the delivery pipe on the bracket body; the delivery pipes are inserted into the connection holes one by one; all the heat exchange spaces are connected in sequence through the delivery pipe to form the heat exchange oil channel.

5. The stator support according to claim 4, characterized in that: The delivery pipe includes an input pipe for inputting cooling oil into the heat exchange oil channel, an output pipe for outputting cooling oil from the heat exchange oil channel, and a connecting pipe for cooling oil to flow in the heat exchange oil channel; the input pipe, the output pipe and the connecting pipe are connected to each other.

6. The stator support according to claim 4, characterized in that: The heat sink also includes a connecting piece, and the connecting piece and the heat exchange body are located on opposite sides of the connecting hole; the connecting piece is connected between two adjacent delivery pipes, and a connecting oil passage communicating between the two adjacent delivery pipes is provided on the connecting piece.

7. The stator support according to claim 4, characterized in that: The bracket body is provided with a first mounting portion; the heat sink is provided with a second mounting portion adapted to the first mounting portion; the heat sink is mounted on the first mounting portion of the bracket body through the second mounting portion.

8. The stator support according to claim 7, characterized in that: The first mounting portion is a first mounting hole provided on the bracket body; A mounting plate is provided on the heat exchange body or the delivery pipe, and the second mounting portion is a second mounting hole provided on the mounting plate; the bracket body is bolted to the heat sink through the first mounting hole and the second mounting hole.

9. A motor, characterized in that: It comprises a stator support as claimed in any one of claims 1 to 8.

10. An aircraft, characterized in that: Comprising the motor as claimed in claim 9.

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