Motor shell, motor and electric equipment

Abstract

The invention discloses a motor shell, a motor and electric equipment, the motor shell comprises a plurality of connecting units, the plurality of connecting units are sequentially connected end to end in the circumferential direction, each of the plurality of connecting units comprises a bottom plate, the bottom plate is in contact with a stator assembly, and the bottom plate is provided with an evaporation end; the cover plate is arranged on the outer side of the bottom plate, the cover plate extends in the direction away from the bottom plate in the radial direction of the bottom plate, the cover plate is provided with a condensation end, and the condensation end is communicated with the evaporation end. The shell comprises a plurality of connecting units, in this way, in the machining process of the shell, the connecting units serve as one machining unit to be machined in batches, the machining cost can be reduced, the production period can be shortened, each connecting unit comprises a bottom plate and a cover plate, each bottom plate is provided with an evaporation end, each cover plate is provided with a condensation end, and the condensation ends are communicated with the evaporation ends, so that heat transfer paths of the shell can be enriched; the condensation backflow capability of the shell is obviously improved, and the heat dissipation capability of the shell is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to a motor housing, a motor, and electrical equipment. Background Technology

[0002] In related technologies, the motor housing includes a finned housing and a phase change heat pipe. The finned housing has at least one heat dissipation fin and heat pipe assembly channels evenly distributed along the circumference of the end face of the finned housing. At least one of the heat pipe assembly channels is located next to the heat dissipation fin. The axis of the heat pipe assembly channel is parallel to the axis of the finned housing. The phase change heat pipe is installed in the heat pipe assembly channel to evenly conduct local heat from the finned housing to the entire finned housing.

[0003] However, existing motor housings also have significant drawbacks: there is a certain contact thermal resistance between the heat pipes and the heat pipe assembly channels, and the heat transfer direction of the heat pipes is unidirectional, which has limited improvement on heat transfer within the housing. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a motor housing that can reduce processing costs and production cycle. In addition, it can enrich the heat transfer path, significantly improve the condensation reflux capacity, and greatly enhance the heat dissipation capacity of the housing.

[0005] The present invention further proposes an electric motor.

[0006] The present invention further proposes an electrical device.

[0007] The housing of the motor according to the present invention includes: a plurality of connecting units, the plurality of connecting units being connected end to end in the circumferential direction, each of the plurality of connecting units including: a base plate, the base plate being in contact with a stator assembly, the base plate being provided with an evaporation end; a cover plate, the cover plate being disposed on the outside of the base plate, the cover plate extending in the radial direction of the base plate in a direction away from the base plate, the cover plate being provided with a condensation end, the condensation end being in communication with the evaporation end.

[0008] According to the present invention, the housing of the motor includes multiple connecting units. In this way, during the processing of the housing, the connecting units are processed in batches as a processing unit, which can reduce processing costs and production cycle. The connecting unit includes a base plate and a cover plate. The base plate is provided with an evaporation end, and the cover plate is provided with a condensation end. The condensation end is connected to the evaporation end, which can enrich the heat transfer path of the housing, significantly improve the condensation reflux capacity of the housing, and greatly improve the heat dissipation capacity of the housing.

[0009] In some examples of the present invention, the projection of the base plate in the axial direction is an arc-shaped structure, the cover plate is constructed as a raised sheet-like structure, and there are multiple cover plates, which are spaced apart in the circumferential direction of the base plate.

[0010] In some examples of the present invention, both the evaporation end and the condensation end are vacuum chambers, and the vacuum chambers are filled with a phase change working fluid.

[0011] In some examples of the present invention, aluminum powder or copper powder is disposed in the vacuum chamber; and / or a copper mesh is disposed in the vacuum chamber, the copper mesh being sintered to form a capillary core structure.

[0012] In some examples of the present invention, the particle size of the aluminum powder or the copper powder is a, and the mesh size of the copper mesh is b. The values ​​of a and b are in the range of: 30μm≤a≤150μm, 30 mesh≤b≤300 mesh.

[0013] In some examples of the present invention, each of the plurality of the connecting units further includes a filling tube, which is connected to the vacuum cavity.

[0014] In some examples of the present invention, each of the plurality of connecting units further includes: a side plate, which covers both ends of the base plate and the cover plate in the axial direction of the base plate, and the filling tube is disposed on the side plate.

[0015] In some examples of the present invention, the phase change working fluid is water, methanol, or acetone.

[0016] In some examples of the present invention, each of the multiple connecting units further includes a support column disposed within the evaporation end.

[0017] In some examples of the present invention, the projection of the support column in the radial direction is circular, rectangular or hexagonal.

[0018] In some examples of the present invention, each of the plurality of connecting units further includes a reinforcing member disposed on the outer side of the cover plate.

[0019] The motor according to the present invention includes: a stator assembly, the stator assembly including: a stator core and a stator winding, the stator winding being wound on the stator core; and a housing of the motor described above, wherein the stator core is nested inside the base plate.

[0020] The electrical equipment according to the present invention includes: the motor described above.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the housing according to an embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of the housing according to an embodiment of the present invention;

[0025] Figure 3 This is a structural diagram of the connecting unit;

[0026] Figure 4 This is a schematic diagram of the end face of the connecting unit;

[0027] Figure 5 This is a cross-sectional view of an electric motor according to another embodiment of the present invention.

[0028] Figure label:

[0029] 1. Shell;

[0030] 10. Base plate; 100. Evaporator end; 20. Cover plate; 200. Condenser end; 30. Filling pipe; 40. Side plate; 50. Support column; 70. Connecting unit; 2. Motor; 60. Stator assembly; 600. Stator core; 601. Stator winding. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0032] The following is for reference. Figures 1-5 The housing 1 of the motor according to an embodiment of the present invention is described.

[0033] like Figures 1-4As shown, the housing 1 of the motor according to an embodiment of the present invention includes: a plurality of connecting units 70, which are connected end-to-end in the circumferential direction. The plurality of connecting units 70 are the main part of the housing 1. The plurality of connecting units 70 are connected end-to-end in the circumferential direction to form a closed annular structure, thereby forming the housing 1. In this way, during the processing of the housing 1, the connecting units 70 are processed in batches as a processing unit, which can greatly reduce processing costs and production cycle. It should be noted that the plurality of connecting units 70 are spliced ​​together by argon arc welding and / or laser welding. This ensures that the weld seams between the plurality of connecting units 70 are smooth, dimensionally accurate, and structurally simple and elegant, while also guaranteeing the firmness and reliability of the connection between the plurality of connecting units 70. The three-dimensional configuration of the plurality of connecting units 70 can increase the heat transfer area, achieving rapid heat distribution on the plane, and also extend the heat transfer distance, enhancing the process of heat transfer from the internal working fluid gas-liquid phase change to the outside.

[0034] like Figures 1-4 As shown, each of the multiple connecting units 70 includes a base plate 10 and a cover plate 20. The base plate 10 is a component of the shell 1, primarily used for mounting other components and serving an evaporation function. The cover plate 20 is a major component of the shell 1, primarily providing protection, sealing, and condensation functions. It should be noted that the base plate 10 and cover plate 20 are machined integrally using an extrusion and drawing process. This results in a single, stable, and robust structure, facilitating installation. Furthermore, requiring only one processing mold, it simplifies manufacturing, significantly reducing processing costs and production cycle. The base plate 10 and cover plate 20 are connected using diffusion welding and / or brazing processes. This ensures a smooth weld seam, precise dimensions, a simple and elegant structure, and guarantees the strength and reliability of the connection between the base plate 10 and cover plate 20. The base plate 10 and cover plate 20 can be made of aluminum alloy or copper.

[0035] like Figure 5 As shown, the base plate 10 is in contact with the stator assembly 60, and the base plate 10 is provided with an evaporation end 100. When the base plate 10 is installed, it is in contact with the stator assembly 60, and the stator core 600 is nested inside the base plate 10. The evaporation end 100 is provided inside the base plate 10. The evaporation end 100 can mainly achieve the effect of heat absorption through evaporation, which can improve the evaporation capacity at the base plate 10.

[0036] like Figures 1-4As shown, the cover plate 20 is disposed on the outer side of the base plate 10. In the radial direction of the base plate 10, the cover plate 20 extends away from the base plate 10. The cover plate 20 is provided with a condensing end 200, which is connected to the evaporating end 100. The cover plate 20 is disposed on the outer side of the base plate 10, and the cover plate 20 is provided with a condensing end 200. The condensing end 200 mainly releases heat through condensation. In the radial direction of the base plate 10, the cover plate 20 extends away from the base plate 10, which increases the contact area between the cover plate 20 and the external environment, thereby improving the heat dissipation effect of the cover plate 20. The condensing end 200 is connected to the evaporating end 100, so the heat absorbed in the evaporating end 100 can be introduced into the condensing end 200. Therefore, the circulating heat exchange process of the shell 1 can be realized.

[0037] Therefore, the housing 1 includes multiple connecting units 70. In this way, during the processing of the housing 1, the connecting units 70 are processed in batches as a processing unit, which can reduce processing costs and production cycle. The connecting unit 70 includes a base plate 10 and a cover plate 20. The base plate 10 is provided with an evaporation end 100, and the cover plate 20 is provided with a condensation end 200. The condensation end 100 is connected to the evaporation end 200. This can enrich the heat transfer path of the housing 1, significantly improve the condensation reflux capacity of the housing 1, and greatly improve the heat dissipation capacity of the housing 1.

[0038] Specifically, such as Figures 1-4 As shown, in the axial direction, the projection of the base plate 10 is an arc-shaped structure, and the cover plate 20 is constructed as a raised sheet-like structure. There are multiple cover plates 20, spaced apart circumferentially on the base plate 10. The arc-shaped projection of the base plate 10 allows multiple connecting units 70 to be connected end-to-end via the multiple base plates 10, forming a closed annular structure. Understandably, for the same circumference, a circle has a larger area, thus increasing the contact area of ​​the base plate 10 and improving its evaporative heat absorption effect. The raised sheet-like structure of the cover plate 20 allows for the formation of a larger evaporation end 100 inside the housing 1. The multiple cover plates 20 meet the heat dissipation requirements of the cover plate 1 at the cover plate 20. The spaced arrangement of the multiple cover plates 20 circumferentially on the base plate 10 avoids interference between them and allows for a wider distribution range, further enhancing the heat dissipation capacity of the housing 1 at the cover plate 20.

[0039] Among them, such as Figure 2 and Figure 4As shown, both the evaporation end 100 and the condensation end 200 are vacuum chambers filled with a phase change working fluid. Vacuuming the evaporation end 100 and the condensation end 200 significantly improves the condensation reflux capacity of the shell 1, greatly enhancing its heat dissipation capacity at the cover plate 20. Furthermore, the vacuum chamber helps reduce energy consumption and losses, making the shell 1 more suitable for actual operating conditions. The phase change working fluid is a medium that can convert thermal energy into mechanical energy. Filling the vacuum chamber with the phase change working fluid transforms the single heat transfer mode into a combination of heat transfer and phase change heat transfer, effectively improving the thermal conductivity of the shell 1 and reducing the operating temperature of the stator core 600 and stator winding 601.

[0040] In addition, such as Figure 2 and Figure 4 As shown, aluminum or copper powder is placed inside the vacuum chamber, and / or a copper mesh is placed inside the vacuum chamber, with the copper mesh sintered to form a capillary wick structure. The aluminum or copper powder and the capillary wick structure play a crucial role in the heat dissipation process of the shell 1, primarily by absorbing and releasing heat, promoting circulation, and enhancing the condensation and reflux capacity of the shell 1, thereby achieving efficient heat conduction. The copper mesh is formed into the capillary wick structure by sintering using a graphite mold.

[0041] Of course, such as Figure 2 and Figure 4 As shown, the particle size of the aluminum or copper powder is 'a', and the mesh size of the copper mesh is 'b'. The values ​​of 'a' and 'b' are in the range of: 30μm ≤ a ≤ 150μm, 30 mesh ≤ b ≤ 300 mesh. It should be noted that the particle size 'a' of the aluminum or copper powder needs to meet certain ranges. Specifically, the particle size 'a' cannot be too small, i.e., less than 30μm, as this would affect the thermal conductivity of the aluminum or copper powder. Furthermore, if the aluminum or copper powder is too densely packed, it would be unfavorable for powder arrangement and would increase costs. At the same time, the particle size 'a' cannot be too large, i.e., greater than 150μm, as this would also affect the thermal conductivity of the aluminum or copper powder within the vacuum cavity, impacting the condensation and reflux capacity of the shell 1 and hindering the improvement of the shell's heat dissipation capacity. Therefore, the particle size 'a' of the aluminum or copper powder is set to 30μm-150μm, within which the performance of the aluminum or copper powder is optimal, and its thermal conductivity is strongest. Of course, the particle size 'a' of aluminum or copper powder can be appropriately increased or decreased from 30μm to 150μm as long as it does not affect the performance of the aluminum or copper powder.

[0042] It should be noted that the mesh count b of the copper mesh needs to meet certain ranges. Specifically, the mesh count b cannot be too small, that is, less than 30 mesh. Otherwise, after the copper mesh is sintered to form a capillary core structure, it will affect the reflux capacity of the capillary core structure and the condensation reflux capacity of the shell 1, which is not conducive to improving the heat dissipation capacity of the shell. At the same time, the mesh count b of the copper mesh cannot be too large, that is, greater than 300 mesh. If the mesh count b is too large, the copper mesh will be set too densely, even if the capillary core structure can meet the reflux capacity. This is not conducive to the arrangement of the copper mesh and will increase the cost. Therefore, the mesh count b of the copper mesh is set to 30-300 mesh. Under this setting, the copper mesh performance is the best, and the reflux capacity is the strongest after the copper mesh is sintered to form a capillary core structure.

[0043] Furthermore, such as Figures 1-4 As shown, each of the multiple connecting units 70 also includes a filling pipe 30, which is connected to the vacuum chamber. The filling pipe 30 mainly serves to inject liquid substances. Since it is connected to the vacuum chamber, the filling pipe 30 can inject a liquid phase-change working medium into the vacuum chamber. This transforms the single heat conduction mode of the shell 1 into a combination of heat conduction and phase-change heat transfer modes, effectively improving the thermal conductivity of the shell 1 and reducing the operating temperature of the stator core 600 and stator winding 601. It should be noted that a hydraulic device is used to clamp the filling pipe 30 and perform a mechanical seal. Then, the clamped portion of the filling pipe 30 is welded and sealed using argon arc welding. This results in a smooth weld at the clamped portion of the filling pipe 30, precise dimensions, a simple and elegant structure, and ensures the sealing performance of the clamped portion.

[0044] In addition, such as Figure 1 and Figure 3 As shown, each of the multiple connecting units 70 also includes: a side plate 40, which covers both ends of the base plate 10 and the cover plate 20 in the axial direction of the base plate 10, and a filling pipe 30 is disposed on the side plate 40.

[0045] The side plate 40 is a component of the motor housing 1. It is spliced ​​with the base plate 10 and the cover plate 20 to form the housing 1. In the axial direction of the base plate 10, the side plate 40 covers both ends of the base plate 10 and the cover plate 20. At this time, the side plate 40 splices with the base plate 10 and the cover plate 20 to form the housing 1. The filling pipe 30 is set on the side plate 40. The side plate 40 has a reserved liquid injection port. The filling pipe 30 is welded to the side plate 40 as the phase change working medium filling inlet. The filling pipe 30 and the side plate 40 are welded together. This can make the weld between the filling pipe 30 and the side plate 40 smooth, accurate in size, simple and elegant in structure, and can also ensure the firmness and reliability of the connection between the filling pipe 30 and the side plate 40. It should be noted that the side plate 40 is machined using an extrusion and drawing process, resulting in a single, integrated structure that is more stable and robust, facilitating installation. Furthermore, requiring only one processing mold simplifies manufacturing, significantly reducing processing costs and production cycle. The side plate 40 is connected to the base plate 10 and cover plate 20 using diffusion welding and / or brazing processes. This ensures smooth welds, precise dimensions, and a simple, elegant structure, while also guaranteeing the strength and reliability of the connection between the side plate 40 and the base plate 10 and cover plate 20. This allows for mass production of the housing 1, further reducing processing costs and production cycle. The side plate 40 can be made of aluminum alloy or copper.

[0046] It should be noted that, as Figure 2 and Figure 4 As shown, the phase change working medium is water, methanol, or acetone. Water, methanol, or acetone have good fluidity and property stability, and are easy to obtain in large quantities, which is more in line with the actual working conditions of shell 1. The vacuum cavity is filled with water, methanol, or acetone, which can transform the single heat conduction heat transfer mode of shell 1 into multiple heat transfer modes combining heat conduction and phase change heat transfer. This can effectively improve the thermal conductivity of shell 1 and reduce the operating temperature of stator core 600 and stator winding 601.

[0047] In addition, such as Figure 2 and Figure 4As shown, each of the multiple connecting units 70 also includes a support column 50, which is disposed within the evaporation end 100. The support column 50 mainly serves to support and facilitate reflux. Its placement within the evaporation end 100 enhances the reflux capacity of the evaporation end 100 and the overall strength of the shell 1. The sintering material of the support column 50 is the same as that of the vacuum chamber, using copper mesh sintering. It should be noted that multiple support columns 50 are arranged in an array within the evaporation end 100. This arrangement avoids interference between the multiple support columns 50 and allows for a wider distribution, further improving the reflux capacity of the evaporation end 100 and the overall strength of the shell 1.

[0048] Optionally, such as Figure 2 and Figure 4 As shown, the projection of the support column 50 in the radial direction of the base plate 10 is a circle, rectangle, or hexagon. This allows for greater structural diversity of the support column 50, enabling selection based on actual conditions. Furthermore, circular, rectangular, or hexagonal structures are simpler, easier to manufacture and install, and the support column 50 is more suitable for actual working conditions.

[0049] It should be noted that each of the multiple connecting units 70 also includes a reinforcing member, which is disposed on the outer side of the cover plate 20. The reinforcing member mainly serves to enhance condensation. By arranging the reinforcing member on the outer side of the cover plate 20, the condensation capacity of the housing 1 can be further improved. The reinforcing member can be configured as a heat dissipation reinforcing rib such as fins or pin ribs.

[0050] It should be noted that the motor housing 1 can be cooled not only by air cooling but also by liquid cooling.

[0051] During the manufacturing process of housing 1, connecting unit 70 is processed in batches as a processing unit. The specific manufacturing process of connecting unit 70 is as follows:

[0052] Step 1: The shell 1 is integrally formed by extrusion and drawing process through mechanical processing to form a bottom plate 10, a cover plate 20 and a side plate 40, and an array of support columns 50 are processed on the bottom plate 10.

[0053] Step 2: Using graphite abrasives, capillary core structures are formed on the outer side of the support column 50 and the inner side of the base plate 10 and the cover plate 20 by sintering, so that a condensation end 200 is formed in the capillary core structure.

[0054] Step 3: Using diffusion welding and / or brazing processes, the base plate 10, cover plate 20 and side plate 40 are welded according to the internal structure of the multiple connecting units 70 to form multiple connecting units 70;

[0055] Step 4: The cover plate 20 is reserved with a liquid injection port, and the filling pipe 30 is welded in to fill the liquid phase change working fluid;

[0056] Step 5: Vacuum the multiple connection units 70 to remove internal air;

[0057] Step 6: Use a hydraulic device to clamp the filling tube 30 and perform a mechanical seal. Then, weld and seal the clamped part of the filling tube 30 by argon arc welding to complete the structural processing of multiple connection units 70.

[0058] like Figure 5 As shown, the motor 2 according to an embodiment of the present invention includes a stator assembly 60, which includes a stator core 600 and a stator winding 601. The stator winding 601 is wound on the stator core 600. In the above embodiment, the motor housing 1 has the stator core 600 nested inside the base plate 10. The main function of the stator assembly 60 is to generate a rotating magnetic field. The stator core 600 and the stator winding 601 are components of the stator assembly 60. The stator core 600 mainly forms the main magnetic circuit and fixes the stator winding. The stator winding is mainly used to form one phase or the entire electromagnetic circuit. The stator winding 601 is wound on the stator core 600, which generates a rotating magnetic field. The stator core 600 is nested inside the base plate 10, so the heat generated by the stator core 600 and the stator winding 601 during operation is quickly conducted through the housing 1 for heat dissipation, which can reduce the operating temperature of the motor 2 and improve the reliability of the motor 2's safe operation.

[0059] The electrical equipment according to an embodiment of the present invention is characterized in that it includes: the motor 2 described in the above embodiments.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0061] In the description of this invention, "first feature" and "second feature" may include one or more of the features. In the description of this invention, "a plurality of" means two or more. In the description of this invention, "above" or "below" the second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them. In the description of this invention, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0062] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A housing (1) for an electric motor, characterized in that, include: Multiple connecting units (70) are connected end-to-end in the circumferential direction, and each of the multiple connecting units (70) includes: A base plate (10) is in contact with a stator assembly (60), and the base plate (10) is provided with an evaporation end (100); A cover plate (20) is disposed on the outside of the base plate (10). In the radial direction of the base plate (10), the cover plate (20) extends away from the base plate (10). The cover plate (20) is provided with a condensing end (200) which is connected to the evaporating end (100).

2. The housing (1) of the motor according to claim 1, characterized in that, In the axial direction, the projection of the base plate (10) is an arc-shaped structure, the cover plate (20) is constructed as a raised sheet-like structure, and there are multiple cover plates (20), which are spaced apart in the circumferential direction of the base plate (10).

3. The housing (1) of the motor according to claim 1, characterized in that, Both the evaporation end (100) and the condensation end (200) are vacuum chambers, and the vacuum chambers are filled with a phase change working fluid.

4. The housing (1) of the motor according to claim 3, characterized in that, The vacuum chamber is filled with aluminum powder or copper powder; and / or A copper mesh is disposed inside the vacuum chamber, and the copper mesh is sintered to form a capillary core structure.

5. The housing (1) of the motor according to claim 4, characterized in that, The particle size of the aluminum powder or the copper powder is a, and the mesh size of the copper mesh is b. The values ​​of a and b are in the following ranges: 30μm≤a≤150μm, 30 mesh≤b≤300 mesh.

6. The housing (1) of the motor according to claim 3, characterized in that, Each of the multiple connection units (70) further includes a filling tube (30) that is connected to the vacuum cavity.

7. The housing 1 of the motor according to claim 6, characterized in that, Each of the multiple connecting units (70) further includes a side plate (40) in the axial direction of the base plate (10), the side plate (40) covering both ends of the base plate (10) and the cover plate (20), and the filling tube (30) is disposed on the side plate (40).

8. The housing (1) of the motor according to claim 3, characterized in that, The phase change working medium is water, methanol, or acetone.

9. The housing (1) of the motor according to claim 1, characterized in that, Each of the multiple connecting units (70) further includes a support column (50) disposed within the evaporation end (100).

10. The housing (1) of the motor according to claim 9, characterized in that, In the radial direction, the projection of the support column (50) is circular, rectangular or hexagonal.

11. The housing (1) of the motor according to claim 1, characterized in that, Each of the multiple connecting units (70) further includes a reinforcing member disposed on the outside of the cover plate (20).

12. An electric motor (2), characterized in that, include: A stator assembly (60) includes a stator core (600) and a stator winding (601), wherein the stator winding (601) is wound on the stator core (600); The housing (1) of the motor according to any one of claims 1-11, wherein the stator core (600) is nested inside the base plate (10).

13. An electrical appliance, characterized in that, include: The motor (2) as described in claim 12.

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