Motor housing and motor

Abstract

The utility model relates to the technical field of motors, and discloses a motor shell and a motor, the motor shell comprises a cylindrical inner shell and a cylindrical outer shell, the outer shell is coaxially sleeved outside the inner shell and can form a flow channel for cooling liquid to flow through with the inner shell, the flow channel is arranged to extend from a first end of the motor shell to a second end of the motor shell, and the first end of the motor shell is connected with the outer shell. The motor housing is arranged in a zigzag manner in the circumferential direction of the motor housing; according to the technical scheme provided by the utility model, the contact area between the cooling liquid and the motor shell is obviously increased, namely, the heat dissipation area is increased, the heat dissipation effect is improved, experimental data shows that under the same cooling condition, the heat dissipation efficiency of the motor shell provided by the utility model is improved by about 20% compared with that of a traditional mode of arranging heat dissipation fins, and the heat dissipation efficiency of the motor shell provided by the utility model is greatly improved. Compared with a traditional mode of arranging a spiral flow channel, the efficiency is improved by about 10%.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor housing and a motor. Background Technology

[0002] With the continuous development of motor technology, higher requirements are being placed on the heat dissipation performance of motors. Traditional motor cooling methods include installing heat dissipation fins on the motor housing or setting up spiral flow channels on the motor housing, using flowing coolant to carry away the heat generated by the motor during operation. While heat dissipation fins are structurally simple, their heat dissipation area is limited and uneven; spiral flow channels, although increasing the heat dissipation area to some extent, suffer from high coolant flow resistance, limiting their cooling effect. Therefore, developing a motor housing that can effectively improve the heat dissipation performance of motors to ensure their normal operation is of significant practical importance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing motor housings in terms of poor heat dissipation, and to provide a motor housing that can significantly increase the heat dissipation area, thereby effectively improving the heat dissipation efficiency of the motor housing.

[0004] To achieve the above objectives, the present invention provides a motor housing, comprising a cylindrical inner housing and an outer housing. The outer housing is coaxially sleeved outside the inner housing and can be enclosed with the inner housing to form a flow channel for coolant to flow through. The flow channel is configured to extend from a first end to a second end of the motor housing and is arranged in a folded-back manner in the circumferential direction of the motor housing.

[0005] Preferably, the flow channel includes multiple U-shaped sub-flow channels, which are arranged sequentially along the axial direction of the motor housing and connected end to end.

[0006] Preferably, the plurality of U-shaped sub-channels are provided in multiple sets, and the plurality of U-shaped sub-channels are arranged at intervals along the circumference of the motor housing.

[0007] Preferably, the second ends of the plurality of U-shaped sub-channels in two adjacent groups are connected near the motor housing.

[0008] Preferably, the outer surface of the inner shell is recessed inward to form a first groove, which, together with the inner wall of the outer shell, forms the flow channel.

[0009] Preferably, the inner wall of the outer shell is recessed to one side of its outer wall to form a second groove, the second groove and the outer surface of the inner shell enclosing each other to form the flow channel.

[0010] Preferably, the outer casing is provided with a water inlet and a water outlet, which are respectively connected to the flow channel to form a flowing coolant in the flow channel through an external cooling system.

[0011] Preferably, the inner housing is provided with a housing mounting base, and the outer housing is provided with a through hole for the housing mounting base to pass through.

[0012] This utility model also provides an electric motor having the above-described motor housing.

[0013] By employing the aforementioned technical solution, and arranging the flow channels in a zigzag pattern along the circumference of the motor housing, extending from one end to the other, the contact area between the coolant and the motor housing is significantly increased, thus increasing the heat dissipation area and improving the heat dissipation effect. The inventors of this application have discovered that this zigzag arrangement of the flow channels achieves a larger heat dissipation area while maintaining low coolant flow resistance, thereby ensuring better heat dissipation. Experimental data shows that, under the same cooling conditions, in terms of heat dissipation efficiency, the motor housing provided by this invention is approximately 20% more efficient than the traditional method of setting heat dissipation fins, and approximately 10% more efficient than the traditional method of setting spiral flow channels. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a motor housing provided by this utility model;

[0015] Figure 2 yes Figure 1 Exploded view of the motor housing;

[0016] Figure 3 yes Figure 1 A sectional view of the motor housing;

[0017] Figure 4 This is a schematic diagram of the unfolded flow channel provided by this utility model.

[0018] Explanation of reference numerals in the attached figures

[0019] 100. Motor housing; 101. First end; 102. Second end; 110. Inner housing; 111. First groove; 120. Outer housing; 121. Through hole; 130. Flow channel; 131. U-shaped sub-flow channel; 132. Liquid inlet; 133. Liquid outlet; 140. Water inlet; 150. Water outlet; 160. Housing mounting base. Detailed Implementation

[0020] To make the technical means, creative features, objectives, and effects of this utility model readily understandable, the present utility model is further explained below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a motor housing, which includes a cylindrical inner housing 110 and an outer housing 120. The outer housing 120 is coaxially sleeved outside the inner housing 110 and can be enclosed with the inner housing 110 to form a flow channel 130 for coolant to flow through. The flow channel 130 is configured to extend from a first end 101 to a second end 102 of the motor housing 100 and is arranged in a folded-back shape in the circumferential direction of the motor housing 100.

[0022] In the technical solution provided by this utility model, the inner shell 110 and the outer shell 120 are tightly fitted together to form a flow channel 130 for the coolant to flow through, thereby carrying away the heat generated by the motor during operation and achieving reliable heat dissipation. By arranging the flow channel 130 in a zigzag pattern on the circumference of the motor housing 100 and extending from the first end 101 to the second end 102 of the motor housing 100, the contact area between the coolant and the motor housing 100 is significantly increased, i.e., the heat dissipation area is increased, and the heat dissipation effect is improved. The inventors of this application have found that this zigzag arrangement of the flow channel 130 of this utility model achieves a larger heat dissipation area while maintaining low coolant flow resistance, thus ensuring a better heat dissipation effect. Experimental data shows that, under the same cooling conditions, in terms of heat dissipation efficiency, the motor housing 100 provided by this utility model is about 20% more efficient than the traditional method of setting heat dissipation fins and about 10% more efficient than the traditional method of setting spiral flow channels. This not only meets the heat dissipation requirements of the motor for long-term stable operation, but also improves the overall performance and reliability of the motor.

[0023] In this invention, the inner shell 110 and the outer shell 120 can be connected and fixed in any suitable manner to form a flow channel 130 for the coolant to flow through. For example, the outer surface of the inner shell 110 is fitted to the inner wall of the outer shell 120 and connected by welding. This connection method ensures the sealing of the flow channel 130, allowing the coolant to flow in the direction constrained by the flow channel 130 and promptly remove the heat generated during motor operation.

[0024] In the technical solution of this utility model, by tightly fitting the inner shell 110 and the outer shell 120 together and fixing them by welding, the structural strength of the motor shell 100 is enhanced and the service life of the motor is improved.

[0025] In a further technical solution, the outer casing 120 is also provided with structures such as turbulence columns that can extend into the flow channel 130. The turbulence columns can disturb the flowing coolant, improve the heat exchange effect between the coolant and the motor housing 100, and thus further improve the heat dissipation effect of the motor housing 100.

[0026] In this invention, the inner housing 110 can be made of high-strength, corrosion-resistant aluminum alloy to ensure its stability and reliability during long-term use. The outer housing 120 is made of lightweight aluminum alloy, thus reducing the overall weight of the motor housing 100.

[0027] In this invention, the coolant flowing through the flow channel 130 can be any suitable component, which can be commonly used in the field, as long as it can carry away the heat of the motor housing 100 in time when flowing through the flow channel 130. For example, the coolant can be cooling water, which has the advantages of being readily available and low in cost.

[0028] It is understandable that a key aspect of this invention is to improve space utilization and increase the cooling area through the design of the flow channel 130, thereby enhancing the heat dissipation effect. In some embodiments of this invention, combined with... Figure 4 As shown, the flow channel 130 includes a plurality of U-shaped sub-flow channels 131, which are arranged sequentially along the axial direction of the motor housing 100 and connected end to end.

[0029] Furthermore, to facilitate processing and forming, in some embodiments, multiple sets of the plurality of U-shaped sub-channels 131 are provided, and the multiple sets of the plurality of U-shaped sub-channels 131 are arranged at circumferential intervals along the motor housing 100. For example, as shown... Figure 4 The diagram shown is an unfolded schematic of a flow channel 130 provided by this utility model. Two sets of multiple U-shaped sub-flow channels 131 are arranged at intervals in the circumferential direction of the motor housing 100, and each set includes four U-shaped sub-flow channels 131.

[0030] In this invention, each group of multiple U-shaped sub-channels 131 along the axial direction of the motor housing 100 can be provided with an independent inlet 132 and outlet 133. These inlets 132 and outlets 133 are connected to an external cooling system, forming flowing coolant within the multiple U-shaped sub-channels 131, thereby carrying away heat from the motor housing 100. It is understood that by providing independent inlets 132 and outlets 133, flowing coolant can be formed in each group of multiple U-shaped sub-channels 131, thus improving heat dissipation efficiency. However, this solution requires the arrangement of a large number of pipes and has a high implementation cost.

[0031] In some embodiments, the second ends 102 of two adjacent sets of the plurality of U-shaped sub-channels 131 near the motor housing 100 are connected. With the above arrangement, only one set of inlet 132 and outlet 133 needs to be provided. For example, as shown... Figure 4 In the scheme shown, which has two sets of multiple U-shaped sub-channels 131, an inlet 132 is provided at the first end 101 near the motor housing 100 of one set of multiple U-shaped sub-channels 131, and an outlet 133 is provided at the first end 101 near the motor housing 100 of the other set of multiple U-shaped sub-channels 131. The second ends 102 near the motor housing 100 of the two sets of multiple U-shaped sub-channels 131 are connected.

[0032] In some embodiments, the outer surface of the inner housing 110 is recessed inward to form a first groove 111, which, together with the inner wall of the outer housing 120, forms the flow channel 130. In the above embodiments, the first groove 111, provided on the outer surface of the inner housing 110, constitutes the main body of the flow channel 130. It is arranged in a folded-back shape in the circumferential direction of the inner housing 110 and extends further from one end of the inner housing 110 to the other end, thereby achieving maximum coverage of the outer surface of the inner housing 110. The first groove 111 further engages with the inner wall of the outer housing 120 to form the flow channel 130 for coolant to flow through.

[0033] It should be noted that in this utility model, the first groove 111 on the inner shell 110 serves as the main body of the flow channel 130, which has the advantages of simple structure, convenient processing, and low cost. By processing the first groove 111 on the outer surface of the inner shell 110, complex molds and welding processes are avoided, the process steps in the processing are reduced, the product yield is improved, and the product cost is reduced.

[0034] In some embodiments, the inner wall of the outer casing 120 is recessed towards its outer wall to form a second groove (not shown in the figure), and the second groove and the outer surface of the inner casing 110 enclose the flow channel 130. It is understood that the flow channel 130 can also be formed by the enclosure of the inner casing 110 and the outer casing 120 through the above solution, but the cooling effect is slightly worse than the aforementioned solution of recessing the outer surface of the inner casing 110 inward to form the first groove 111.

[0035] In some embodiments, the housing 120 is provided with an inlet 140 and an outlet 150, which are respectively connected to the flow channel 130 to form a flowing coolant within the flow channel 130 by an external cooling system. The inlet 140 and outlet 150 facilitate the connection of the flow channel 130 to an external system.

[0036] In this invention, to facilitate the installation of the motor housing 100, a housing mounting base 160 is provided on the inner housing 110, and a through hole 121 is provided on the outer housing 120 for the housing mounting base 160 to pass through. With the above arrangement, the motor housing 100 can be installed in the desired position via the housing mounting base 160. Furthermore, in some embodiments of this invention, two housing mounting bases 160 are provided, and the two housing mounting bases 160 are spaced apart circumferentially along the motor housing 100.

[0037] This utility model also provides an electric motor having the aforementioned motor housing 100. The advantages of the electric motor in this utility model are the same as the advantages of the aforementioned motor housing 100, which will not be elaborated upon here.

[0038] The foregoing has shown and described the basic principles, main features, and characteristics of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electric machine housing, characterized in that, It includes a cylindrical inner shell (110) and an outer shell (120). The outer shell (120) is coaxially sleeved outside the inner shell (110) and can be enclosed with the inner shell (110) to form a flow channel (130) for coolant to flow through. The flow channel (130) is configured to extend from a first end (101) to a second end (102) of the motor housing (100) and is arranged in a folded-back shape in the circumferential direction of the motor housing (100).

2. The motor housing of claim 1, wherein, The flow channel (130) includes multiple U-shaped sub-flow channels (131), which are arranged sequentially along the axial direction of the motor housing (100) and connected end to end.

3. The motor housing of claim 2, wherein, The plurality of U-shaped sub-channels (131) are provided in multiple sets, and the plurality of U-shaped sub-channels (131) are arranged at circumferential intervals along the motor housing (100).

4. The motor housing of claim 3, wherein, The second ends (102) of the two adjacent sets of the plurality of U-shaped sub-channels (131) near the motor housing (100) are connected.

5. The motor housing of claim 1, wherein, The outer surface of the inner shell (110) is recessed inward to form a first groove (111), which, together with the inner wall of the outer shell (120), forms the flow channel (130).

6. The motor housing of claim 1, wherein, The inner wall of the outer shell (120) is recessed to one side of its outer wall to form a second groove, which, together with the outer surface of the inner shell (110), forms the flow channel (130).

7. The motor housing of claim 1, wherein, The outer casing (120) is provided with a water inlet (140) and a water outlet (150), which are respectively connected to the flow channel (130) to form a flowing coolant in the flow channel (130) through an external cooling system.

8. The motor housing of claim 1, wherein, The inner housing (110) is provided with a housing mounting base (160), and the outer housing (120) is provided with a through hole (121) for the housing mounting base (160) to pass through.

9. An electric machine characterized by The motor has a motor housing (100) as described in any one of claims 1-8.

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