Motor and washing machine

Abstract

The utility model discloses a motor. The motor is used for a washing machine. The motor comprises a stator shell and an electric control box, a heat dissipation groove is formed in the electric control box, and the heat dissipation groove sinks towards one side of the stator shell. According to the motor provided by the embodiment of the invention, the heat dissipation grooves are formed in the electric control box, so that the heat dissipation area of the stator is increased, and the heat dissipation effect of the stator is improved. And meanwhile, the thickness of the plastic layer on the outer side of the stator is reduced by arranging the heat dissipation grooves, so that the heat of the stator can be better radiated outwards through the plastic layer, the heat dissipation efficiency is further improved, and the influence on the motor performance and even the motor burning caused by untimely heat dissipation of the stator are avoided. In addition, heat dissipation parts do not need to be additionally arranged on the electric control box, consumption of manufacturing materials of the electric control box is reduced due to the arrangement of the heat dissipation grooves, and the production cost of the motor can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more specifically, to a motor and a washing machine. Background Art

[0002] In the related art, the motor includes a stator, which usually generates heat when working and needs to be dissipated. However, the stator has a stator housing outside for protecting the stator, and the heat dissipation effect of the stator housing is not ideal and cannot meet the heat dissipation requirements of the stator. Utility Model Content

[0003] Embodiments of the present application provide a motor and a washing machine.

[0004] The motor of the embodiment of the present application includes a stator housing and an electric control box, wherein the electric control box includes an electric control box connected to the stator housing, and a heat dissipation groove is opened on the electric control box, and the heat dissipation groove is recessed toward one side of the stator housing.

[0005] In the motor of the embodiment of the present application, by providing a heat dissipation slot on the electric control box, the heat dissipation area of ​​the stator is increased, and the heat dissipation effect of the stator is improved. At the same time, the provision of the heat dissipation slot also reduces the thickness of the plastic layer on the outside of the stator, so that the heat of the stator can be better radiated outward through the plastic layer, further improving the heat dissipation efficiency, and avoiding the impact on the motor performance caused by the untimely heat dissipation of the stator or even burning the motor. In addition, the electric control box of the embodiment of the present application does not need to be equipped with additional heat dissipation parts, and the provision of the heat dissipation slot also reduces the consumption of materials for making the electric control box, which is conducive to reducing the production cost of the motor.

[0006] In some embodiments, the stator housing and the electric control box are made of the same material.

[0007] In this way, using the same material can simplify the production process and reduce the number of times materials need to be replaced or parameters need to be adjusted on the production line, thereby improving production efficiency and reducing production costs.

[0008] In some embodiments, the stator housing is made of bulk molding compound.

[0009] Thus, since bulk molding compound is a thermosetting plastic product with excellent performance, it has excellent insulation performance, chemical corrosion resistance, mechanical properties and heat resistance, and since the thermal conductivity of bulk molding compound is much greater than that of air, bulk molding compound can play a heat dissipation role to a certain extent.

[0010] In some embodiments, the electric control box and the stator housing are an integrated structure formed integrally.

[0011] Thus, the one-piece processing and forming is conducive to reducing the processing difficulty of the electric control box and the electric control box. In addition, the one-piece processing and forming of the electric control box and the electric control box is also conducive to improving the structural strength of the electric control box and the electric control box.

[0012] In some embodiments, the heat dissipation slot is formed by a shell extraction process on the electric control box.

[0013] In this way, the overall weight of the electric control box can be effectively reduced by removing part of the material inside the electric control box through the shell extraction process. At the same time, the shell extraction process can significantly reduce the amount of materials required in the manufacturing process, thereby reducing production costs.

[0014] In some embodiments, the motor includes a rotating shaft, and the heat dissipation slot is in a fan ring shape, and the heat dissipation slot surrounds the rotating shaft.

[0015] The fan-shaped heat sink is uniform and symmetrical, so the heat can be more evenly distributed over the entire heat sink, thus improving the heat dissipation efficiency. The fan-shaped heat sink can also effectively guide the air flow, while reducing the resistance during air flow, promoting the convection and radiation of heat, and further improving the heat dissipation effect.

[0016] In some embodiments, the inner diameter of the heat dissipation slot is 35-50 mm.

[0017] Thus, if the inner diameter is less than 35 mm, the thickness of the rotor support frame will be too small, and the strength of the rotor support frame will be greatly reduced. If the inner diameter is greater than 50 mm, the thickness of the rotor support frame will be too large, and the strength of the rotor support frame will not change significantly with the increase of thickness, so it is not advisable to continue to increase it.

[0018] In some embodiments, the outer diameter of the heat dissipation slot is 75-90 mm.

[0019] In this case, if the outer diameter is less than 75mm, the width of the heat sink will be too small, and the heat dissipation capacity of the heat sink will be greatly reduced. If the outer diameter is greater than 90mm, the outer wall of the heat sink will be too thin or even extend out of the electric control box due to the size of the electric control box, thus affecting the structural strength of the electric control box. On the other hand, further increasing the outer diameter has no significant effect on increasing the heat dissipation efficiency, and the cost performance is not high.

[0020] In some embodiments, the depth of the heat dissipation groove along the axial direction of the motor is 10-30 mm.

[0021] In this case, if the depth of the heat sink is less than 10 mm, the bottom wall thickness of the heat sink will be too large, and the heat dissipation efficiency will be affected by the bottom wall thickness and it will be difficult to meet the actual heat dissipation requirements. If the depth of the heat sink is greater than 30 mm, the depth of the heat sink is too large, and the heat dissipation efficiency has no significant change with the increase of thickness. However, due to the small thickness, the strength of the rotor support frame is greatly reduced, affecting the structural strength of the electric control box, so it is not advisable to continue to increase it.

[0022] A washing machine according to another embodiment of the present application comprises the motor described in any one of the above items.

[0023] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a schematic diagram of the structure of the motor according to the embodiment of the present application.

[0026] Description of the main component symbols: motor 100 , stator housing 10 , rotating shaft 20 , electric control box 30 , electric control box 31 , heat dissipation slot 32 , connecting part 321 , rotor support frame 33 , bearing 331 . DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. In the description of the present application, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The disclosure of this article provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0031] In the related art, the motor includes a stator, which usually generates heat when working and needs to be dissipated. However, the stator has a stator housing outside for protecting the stator, and the heat dissipation effect of the stator housing is not ideal and cannot meet the heat dissipation requirements of the stator.

[0032] See also Figure 1 A washing machine according to an embodiment of the present application includes a motor 100, the motor 100 includes an electric control box 30, the motor 100 includes a stator housing 10, the electric control box 30 includes an electric control box 31 connected to the stator housing 10, and a heat dissipation groove 32 is opened on the electric control box 31, and the heat dissipation groove 32 is recessed toward one side of the stator housing 10.

[0033] In the motor 100 of the embodiment of the present application, by providing the heat dissipation slot 32 on the electric control box 31, the heat dissipation area of ​​the stator is increased, and the heat dissipation effect of the stator is improved. At the same time, the provision of the heat dissipation slot 32 also reduces the thickness of the plastic layer on the outside of the stator, so that the heat of the stator can be better radiated outward through the plastic layer, further improving the heat dissipation efficiency, and avoiding the impact on the performance of the motor 100 caused by the untimely heat dissipation of the stator or even burning the motor 100. In addition, the electric control box 30 of the embodiment of the present application does not need to be equipped with additional heat dissipation parts, and the provision of the heat dissipation slot 32 also reduces the consumption of materials for making the electric control box, which is conducive to reducing the production cost of the motor 100.

[0034] Specifically, a washing machine is a cleaning appliance that uses electrical energy to generate mechanical action to wash clothes. There are many types of washing machines. Common washing machines can be divided into stirring washing machines, jet washing machines, vibration washing machines, ultrasonic washing machines, pulsator washing machines and drum washing machines according to their working principles and structural characteristics. Among them, whether it is a pulsator washing machine or a drum washing machine, the motor 100 is one of the core components of the washing machine. In this embodiment, a drum washing machine is taken as an example.

[0035] The motor 100 refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines. The working principle of the motor 100 is to input electric energy into the motor 100 through the power supply system, convert the electric energy into mechanical energy, drive the washing tub or washing shaft to rotate, thereby completing the actions of washing, rinsing and drying. The performance of the motor 100 directly affects the washing effect and operation stability of the washing machine. In this embodiment, the motor 100 selects a plastic-coated stator drive motor.

[0036] In this embodiment, the motor 100 is provided with an electric control box 30 for controlling the motor. The electric control box 30 is also called a motor control box or a motor controller and is an important component of the electrical system. Its main function is to manage and adjust the power output of the motor to ensure that the motor 100 can run efficiently and smoothly. The electric control box 30 achieves precise control of the motor 100 by controlling electrical parameters such as current and voltage to ensure safe and efficient operation of the motor 100. A circuit board is usually provided at the bottom of the electric control box 30, and a control component and a drive module are provided on the circuit board.

[0037] In this embodiment, the electric control box 31 of the electric control box 30 is arranged on the side of the stator housing 10 away from the driving end of the rotating shaft 20, and the plane where the bottom of the electric control box 31 of the electric control box 30 is located is perpendicular to the axis of the rotating shaft 20. Such an arrangement, on the one hand, is convenient for production and processing, and is conducive to reducing the difficulty of electrical connection between the electric control box 30 and the motor 100. On the other hand, at this time, the heat dissipation groove 32 is arranged at the bottom of the electric control box 31, which can more easily realize the heat dissipation of all positions of the stator arranged around the rotating shaft 20.

[0038] The heat dissipation slot 32 refers to a slot-shaped structure used to assist the motor 100 in dissipating heat. The heat dissipation principle is that the heat dissipation slot 32 reduces the thickness of the plastic on the outside of the motor 100, thereby improving the heat dissipation capacity. At the same time, the heat dissipation slot 32 expands the heat dissipation area, further improving the heat dissipation efficiency of the motor 100. The main function of the heat dissipation slot 32 is to quickly disperse the heat to the surrounding environment during the operation of the electronic device, thereby ensuring the normal operation of the electronic device.

[0039] The heat dissipation groove 32 is provided at the bottom of the electric control box 31, and the depth direction of the heat dissipation groove 32 is the axial direction of the rotating shaft 20 of the motor 100. The side wall of the heat dissipation groove 32 is slightly inclined. The inclined side wall design can increase the contact area between the heat dissipation groove 32 and the air, so that the air can more fully exchange heat with the heat dissipation groove 32 during the flow process. This helps to take away the heat from the heat dissipation groove 32 more effectively, thereby improving the heat dissipation efficiency. The inclined side wall can reduce the resistance of the air when it flows through the heat dissipation groove 32, so that the air flows more smoothly. This helps to reduce the energy consumption of fans or other heat dissipation equipment, while improving the heat dissipation performance.

[0040] The inclined side wall design can guide the air to flow along a specific path, so that the air can be more evenly distributed in various parts of the heat dissipation slot 32. This helps to avoid local overheating of the heat dissipation slot 32 and improve the overall heat dissipation effect.

[0041] Enhanced structural stability: In some cases, the inclined sidewall design can also enhance the structural stability of the heat sink 32. This design can reduce material deformation and stress concentration caused by temperature changes, thereby extending the service life of the heat sink 32.

[0042] In addition, the side wall of the heat dissipation groove 32 is slightly inclined to facilitate demoulding during processing. The side wall of the heat dissipation groove 32 is slightly inclined to form a draft angle, which is conducive to allowing the molded product to be ejected from the mold smoothly.

[0043] In this embodiment, taking a washing machine that can drive 6 to 10 kg as an example, the current generated by the motor 100 is >1A, and the corresponding heat load requires a heat dissipation area of ​​>40,000 square centimeters. Compared with the heat dissipation area of ​​the original stator housing 10 of the motor 100, an additional heat dissipation area of ​​more than 30% is required. Therefore, the heat dissipation area increased by the heat dissipation groove 32 should be greater than 30% of the heat dissipation area of ​​the stator housing 10.

[0044] In some embodiments, the stator housing and the electric control box are made of the same material.

[0045] In this way, using the same material can simplify the production process and reduce the number of times materials need to be replaced or parameters need to be adjusted on the production line, thereby improving production efficiency and reducing production costs.

[0046] In some embodiments, the material of the stator housing 10 is bulk molding compound.

[0047] Thus, since bulk molding compound is a thermosetting plastic product with excellent performance, it has excellent insulation performance, chemical corrosion resistance, mechanical properties and heat resistance, and since the thermal conductivity of bulk molding compound is much greater than that of air, bulk molding compound can play a heat dissipation role to a certain extent.

[0048] Specifically, Bulk Molding Compound (BMC) is a semi-dry process for manufacturing glass fiber reinforced thermosetting products. It is pre-mixed into a paste with unsaturated polyester resin, low shrinkage / low profile additives, initiators, internal release agents, mineral fillers, etc., and then thickeners, colorants, etc. are added. It is stirred with glass fibers of different lengths in a special material kettle to undergo a thickening process, and finally a bulk intermediate material is formed, which can be used for molding and injection molding.

[0049] Bulk molding compound has a series of excellent properties. For example, its tensile, bending, impact strength and other properties are higher than thermoplastics, and its creep resistance is also better than thermoplastics; it has good corrosion resistance to water, ethanol, aliphatic hydrocarbons, grease, and oil; its heat resistance is better than that of general engineering plastics, and its heat deformation temperature HDT is 200-280℃, and it can be used at 130℃ for a long time; its aging resistance is very good, and it can be used indoors for 15-20 years, and its strength retention rate is above 60% after 10 years of outdoor exposure; in addition, its arc resistance is also outstanding, which can reach about 190 seconds.

[0050] See also Figure 1 In some embodiments, the electric control box 31 and the housing are integrally formed into an integrated structure.

[0051] Thus, the one-piece processing is conducive to reducing the processing difficulty of the electric control box 30 and the electric control box 31 . In addition, the one-piece processing of the electric control box 30 and the electric control box 31 is also conducive to improving the structural strength of the electric control box 30 and the electric control box 31 .

[0052] Specifically, one-piece molding technology is a manufacturing process that means a part or product is made in one process without the need for secondary or more processing. This process is widely used in the manufacturing industry. Through one-piece molding technology, multiple parts or materials can be combined into a whole, thereby improving the accuracy and efficiency of the equipment.

[0053] The integrated processing and forming technology mainly includes injection molding, die casting, extrusion molding, compression molding, stamping molding, etc. In this embodiment, the integrated processing and forming technology uses injection molding. Injection molding uses an injection molding machine to inject molten plastic into a mold for molding. This process has the advantages of high precision, high complexity, and high production speed, and is suitable for mass production.

[0054] See also Figure 1 In some embodiments, the electric control box 31 is formed into a heat dissipation slot 32 by shell extraction.

[0055] In this way, by removing part of the material inside the electric control box 31 through the shell extraction process, the overall weight of the electric control box 31 can be effectively reduced. At the same time, the shell extraction process can significantly reduce the amount of materials required in the manufacturing process, thereby reducing production costs.

[0056] Specifically, shelling refers to converting a solid object into a hollow shell with a specified thickness through some operation. This usually involves creating a thin wall with a specified thickness in a three-dimensional solid object, and creating a new face by offsetting the existing face to the inside or outside of the original position. This operation is very common in product design, mechanical manufacturing and other fields, helping to reduce product weight and save materials while maintaining the necessary structural strength.

[0057] By forming the heat dissipation groove 32 by shelling the electric control box 31, the material consumption is reduced by 10% to 15% compared with the case where the heat dissipation groove 32 is not provided, which effectively reduces the production cost. At the same time, the heat dissipation area is increased by 30%, which improves the heat dissipation efficiency.

[0058] See also Figure 1 In some embodiments, the motor 100 includes a rotating shaft 20 , and the heat dissipation groove 32 is in the shape of a fan ring, and the heat dissipation groove 32 surrounds the rotating shaft 20 .

[0059] In this way, the fan-shaped heat dissipation slot 32 has uniformity and symmetry, and the heat can be more evenly distributed over the entire heat dissipation slot 32, thereby improving the heat dissipation efficiency. The fan-shaped heat dissipation slot 32 can also effectively guide the air flow, while reducing the resistance during air flow, promoting the convection and radiation of heat, and further improving the heat dissipation effect.

[0060] Specifically, a rotor support frame 33 is formed at the rotating shaft 20. In addition, while ensuring the heat dissipation effect, the rotor support frame 33 can also ensure the structural strength at the edge of the rotating shaft 20 of the motor 100, avoiding easy damage due to low structural strength caused by too thin material.

[0061] The rotor support frame 33 is an integral structure formed by integral injection molding with the electric control box 31 and the stator housing 10. The rotor support frame 33 has a ring-shaped cross section and a mounting hole in the middle of the rotor support frame 33. The tail end of the rotating shaft 20 of the motor 100 is inserted into the mounting hole, and the rotating shaft 20 can rotate in the mounting hole.

[0062] The rotor support frame 33 is truncated cone-shaped as a whole, and the truncated cone-shaped design makes the support frame more stable in structure. Since the truncated cone has a large bottom area, it can effectively disperse various forces and moments generated by the rotor, reduce local stress concentration, and thus improve the stability and reliability of the entire rotor support frame 33.

[0063] The truncated cone shape design enables the rotor support frame 33 to have a larger bearing area in the vertical direction, which means that the support frame can bear a larger weight and load. For a high-speed rotor, this design can ensure that it remains stable during operation and avoid failures caused by overload.

[0064] The truncated cone-shaped rotor support frame 33 also helps to reduce the vibration and noise generated by the rotor during operation. Since the support frame has good stability and load-bearing capacity, it can effectively suppress the vibration of the rotor, reduce the noise level, and improve the stability and comfort of the equipment operation.

[0065] In addition, the shape of the truncated cone-shaped support frame is relatively simple, and is easy to manufacture and process. Since the side of the truncated cone-shaped rotor support frame 33 has a certain slope, the slope is also convenient for demoulding during injection molding. Further, the corners of the rotor support frame 33 are provided with transition fillets or chamfers, and the connection between the rotor support frame 33 and the bottom of the heat dissipation slot 32 is also provided with a transition fillet.

[0066] The top surface of the rotor support frame 33 is slightly lower than the bottom surface of the electric control box 31, and one side of the rotor support frame 33 is connected to the side surface of the electric control box 31. Such a configuration is conducive to further strengthening the structural strength of the rotor support frame 33. At the same time, since a circuit board needs to be installed in the electric control box 31, the top surface of the rotor support frame 33 is slightly lower than the bottom surface of the electric control box 31, which can also prevent the rotor from axially displacing due to assembly and other reasons during rotation, thereby preventing the rotor from touching the circuit board.

[0067] When the heat sink 32 includes a connection portion 321 for connecting a circuit board or other components, the heat sink 32 needs to avoid the connection portion 321. In this embodiment, the connection portion 321 is a connection column, which is connected to the inner wall of the heat sink 32 closest to the connection column, thereby improving the connection strength of the connection column.

[0068] In other embodiments, if the connection column is at a distance from the inner wall of the heat dissipation slot 32, a reinforcing rib may be provided at the connection between the connection column and the bottom wall. One end of the reinforcing rib is connected to the connection column, and the other end of the reinforcing rib is connected to the bottom wall. There may be multiple reinforcing ribs, and multiple reinforcing ribs are provided around the connection column.

[0069] In other embodiments, the connection portion 321 may also be configured as a buckle, and the buckle may be connected to the inner wall of the heat dissipation slot 32 closest to the buckle, thereby improving the connection strength of the buckle. When the buckle is at a distance from the inner wall of the heat dissipation slot 32, a reinforcing rib may also be provided at the connection between the buckle and the bottom wall. One end of the reinforcing rib is connected to the buckle, and the other end of the reinforcing rib is connected to the bottom wall. There may be multiple reinforcing ribs, and multiple reinforcing ribs are provided on both sides of the buckle.

[0070] The rotor support frame 33 may be provided with an accommodating cavity, in which a bearing 331 is provided, and the rotating shaft 20 is connected to the rotor support frame 33 via the bearing 331. The bearing 331 is provided between the rotating shaft 20 and the rotor support frame 33, which reduces the friction and energy loss between the rotating shaft 20 and the rotor support frame 33, thereby improving the overall performance and operation efficiency of the machine equipment.

[0071] The bearing 331 connection has high resistance to torsion and radial force, which helps to avoid failure of the connection structure due to loosening of the lock, etc. This stability ensures the continuity and reliability of the equipment during operation.

[0072] The bearing 331 connection enables the load to be more evenly distributed on each component, reducing the risk of damage caused by local overload. In addition, by preloading the bearing 331, the bearing capacity and life of the bearing 331 can be further improved.

[0073] The bearing 331 can help the rotating shaft 20 to be accurately positioned in the shaft of the rotor support frame 33, and prevent the deviation and shaking of the rotating shaft 20. This precise positioning helps to improve the working efficiency of the motor 100 and reduce vibration and noise.

[0074] In addition, the bearing 331 isolates the rotating shaft 20 and the rotor support frame 33, avoiding wear caused by direct friction between the rotating shaft 20 and the rotor support frame 33, and the cost of replacing the bearing 331 is relatively low. Since the bearing 331 connection can significantly improve the stability and reliability of the equipment, it can reduce downtime and maintenance costs caused by failures, thereby further reducing the overall maintenance cost.

[0075] In other embodiments, the electric control box 31 and the stator housing 10 may also be separately processed and formed, and connected by fasteners. In this case, the rotor support frame 33 may be an integrated structure formed by integral processing with the stator housing 10. A fan-shaped slot is provided at the bottom of the electric control box 31, and a through hole is provided at the bottom of the heat dissipation groove 32. The rotor support frame 33 passes through the through hole to form a fan-shaped heat dissipation groove 32 with the electric control box 30.

[0076] In other embodiments, the electric control box 31 and the stator housing 10 may also be separately processed and formed, and connected by fasteners. In this case, the rotor support frame 33 and the electric control box 31 may be an integrated structure formed by integral processing. Optionally, the fan-shaped heat dissipation groove 32 may be formed by the rotor support frame 33 and the electric control box 31, and the fan-shaped heat dissipation groove 32 may also be formed by the rotor support frame 33, the stator housing 10 and the electric control box 31.

[0077] In other embodiments, the heat sink 32 may also be provided in other shapes. Optionally, the heat sink 32 may be a circular heat sink, a fan-shaped heat sink, or a circular ring-shaped heat sink with the center on the axis of the rotating shaft 20. It should be noted that when the heat sink 32 is a circular heat sink or a fan-shaped heat sink with the center on the axis of the rotating shaft 20, a mounting hole needs to be provided in the middle of the heat sink 32, and the rear end of the rotating shaft 20 of the motor 100 is inserted into the mounting hole, and the rotating shaft 20 can rotate in the mounting hole. Since the bottom wall around the mounting hole is relatively thin, a reinforcement portion may be appropriately provided at the edge of the mounting hole to enhance the structural strength of the mounting hole.

[0078] In other embodiments, the number of the heat dissipation slots 32 may be multiple, and the multiple heat dissipation slots 32 are evenly spaced around the rotating shaft 20. Furthermore, the total heat dissipation area increased by the multiple heat dissipation slots 32 should exceed 30% of the total heat dissipation area of ​​the motor 100 itself.

[0079] See also Figure 1 In some embodiments, the inner diameter of the heat dissipation slot 32 is 35 to 50 mm.

[0080] Thus, if the inner diameter is less than 35 mm, the thickness of the rotor support frame 33 will be too small, and the strength of the rotor support frame 33 will be greatly reduced. If the inner diameter is greater than 50 mm, the thickness of the rotor support frame 33 will be too large, and the strength of the rotor support frame 33 will not change significantly with the increase of thickness, so it is not suitable to continue to increase.

[0081] Specifically, in the present application, taking a washing machine that can drive 6-10kg as an example, the current generated by the motor 100 is greater than 1A, and the corresponding heat load requires a heat dissipation area of ​​greater than 40,000 square centimeters, which requires an additional heat dissipation area of ​​more than 30% compared to the heat dissipation area of ​​the stator housing 10 of the original motor 100. In order to ensure that sufficient heat dissipation area is added without affecting the structural strength of the electric control box 31 and the stator housing 10, the inner diameter of the heat dissipation slot 32 can be set to 35-50mm.

[0082] Since the side of the rotor support frame 33 has a certain slope, the inner diameter of the bottom of the heat dissipation slot 32 is different from the inner diameter of the slot of the heat dissipation slot 32. The inner diameter of the bottom of the heat dissipation slot 32 should be slightly larger than the inner diameter of the slot of the heat dissipation slot 32. Therefore, the inner diameter of the bottom of the heat dissipation slot 32 should not be greater than 50 mm, and the inner diameter of the slot of the heat dissipation slot 32 should not be less than 35 mm.

[0083] In other embodiments, the model of the washing machine and the model of its motor 100 may be different. In this case, the current and heat generated by the different models will also be different, and the required heat dissipation area will also be different. At this time, the inner diameter of the heat dissipation groove 32 can be calculated according to actual needs to obtain a value range.

[0084] See also Figure 1 In some embodiments, the outer diameter of the heat dissipation slot 32 is 75 to 90 mm.

[0085] Thus, if the outer diameter is less than 75 mm, the width of the heat sink 32 will be too small, and the heat dissipation capacity of the heat sink 32 will be greatly reduced. If the outer diameter is greater than 90 mm, the outer wall of the heat sink 32 will be too thin or even extend out of the electric control box 31 due to the size of the electric control box 31, thereby affecting the structural strength of the electric control box 31. On the other hand, further increasing the outer diameter has no significant effect on increasing the heat dissipation efficiency, and the cost performance is not high.

[0086] Specifically, in the present application, taking a washing machine capable of driving 6 to 10 kg as an example, the current generated by the motor 100 is >1A, and the corresponding heat load requires a heat dissipation area of ​​>40,000 square centimeters. Compared with the heat dissipation area of ​​the stator housing 10 of the original motor 100, an additional heat dissipation area of ​​more than 30% is required. In order to ensure sufficient heat dissipation area without affecting the structural strength of the electric control box 31 and the stator housing 10, the outer diameter of the heat dissipation groove 32 can be set to 75 to 90 mm.

[0087] Since the side wall of the heat dissipation slot 32 is inclined, the outer diameter of the bottom of the heat dissipation slot 32 is not the same as the outer diameter of the slot of the heat dissipation slot 32. The outer diameter of the bottom of the heat dissipation slot 32 is slightly smaller than the outer diameter of the slot of the heat dissipation slot 32. Therefore, the outer diameter of the bottom of the heat dissipation slot 32 should be no less than 75 mm, and the outer diameter of the slot of the heat dissipation slot 32 should be no more than 90 mm.

[0088] In other embodiments, the model of the washing machine and the model of its motor 100 may be different. In this case, the current and heat generated by the different models will also be different, and the required heat dissipation area will also be different. At this time, the outer diameter of the heat dissipation groove 32 can be calculated according to actual needs to obtain a value range.

[0089] See also Figure 1 In some embodiments, the depth of the heat dissipation groove 32 along the axial direction of the motor 100 is 10 to 30 mm.

[0090] In this way, if the depth of the heat dissipation groove 32 is less than 10 mm, the bottom wall thickness of the heat dissipation groove 32 will be too large, and the heat dissipation efficiency will be affected by the bottom wall thickness and it is difficult to meet the actual heat dissipation requirements. If the depth of the heat dissipation groove 32 is greater than 30 mm, the depth of the heat dissipation groove 32 is too large, and the heat dissipation efficiency has no significant change with the increase of thickness. However, due to the small thickness, the strength of the rotor support frame 33 is greatly reduced, affecting the structural strength of the electric control box 30, so it is not suitable to continue to increase.

[0091] Specifically, in the present application, taking a washing machine that can drive 6 to 10 kg as an example, the current generated by the motor 100 is >1A, and the corresponding heat load requires a heat dissipation area of ​​>40,000 square centimeters. Compared with the heat dissipation area of ​​the original stator housing 10 of the motor 100, an additional heat dissipation area of ​​more than 30% is required. In order to ensure sufficient heat dissipation area without affecting the structural strength of the electric control box 31 and the stator housing 10, the depth of the heat dissipation groove 32 along the axial direction of the motor 100 can be set to 10 to 30 mm.

[0092] In other embodiments, the model of the washing machine and the model of its motor 100 may be different. In this case, the current and heat generated by the different models will also be different, and the required heat dissipation area will also be different. In this case, the depth of the heat dissipation groove 32 along the axial direction of the motor 100 can be calculated according to actual needs to obtain a value range.

[0093] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0095] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: The motor comprises a stator housing and an electric control box, wherein the electric control box is connected to the stator housing, and a heat dissipation groove is provided on the electric control box, and the heat dissipation groove is recessed toward one side of the stator housing.

2. The motor according to claim 1, characterized in that The stator housing and the electric control box are made of the same material.

3. The motor according to claim 2, characterized in that The stator housing and the electric control box are made of bulk molding compound.

4. The motor according to claim 2, characterized in that The electric control box and the stator housing are an integrated structure.

5. The motor according to claim 1, characterized in that The heat dissipation groove is formed by the electric control box through shell extraction.

6. The motor according to claim 1, characterized in that The motor comprises a rotating shaft, and the heat dissipation groove is in a fan-shaped ring shape, and the heat dissipation groove surrounds the rotating shaft.

7. The motor according to claim 6, characterized in that The inner diameter of the heat dissipation groove is 35-50 mm.

8. The motor according to claim 6, characterized in that The outer diameter of the heat dissipation groove is 75-90 mm.

9. The motor according to claim 6, characterized in that The depth of the heat dissipation groove is 10-30 mm.

10. A washing machine, characterized in that: A motor comprising any one of claims 1 to 9.

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