Electric control box, electric control assembly, motor assembly and washing machine

Abstract

The application discloses an electric control box, an electric control assembly, a motor assembly and a washing machine. The electric control box comprises a box body and a heat conduction component. The box body is made of plastic and is formed with an inner cavity for accommodating an electric control panel. The heat conduction component is made of metal material and is provided with a contact portion on one side and a plurality of heat dissipation fins on the other side. The heat conduction component is in close contact with the box body. The contact portion is located in the inner cavity to connect electronic components of the electric control panel. The heat dissipation fins extend to the outside of the box body. The contact portion is connected with the electronic components generating heat, so as to conduct the heat of the electronic components to the heat conduction component. On one hand, the heat is dissipated through the plurality of fins of the heat conduction component. On the other hand, the heat is dissipated to the outside through the box body, thereby helping the electronic components to dissipate heat. Since the contact portion is located in the inner cavity of the box body, the electronic components are prevented from being exposed to contact with water vapor, thereby improving the use reliability. The heat conduction component is used to conduct and dissipate heat, so that a metal electric control box is not needed, thereby reducing the manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an electric control box, an electric control assembly, a motor assembly and a washing machine. BACKGROUND

[0002] In the related art, the electric control assembly includes an electric control box and an electric control board installed inside the electric control box. Some electronic components on the electric control board generate a large amount of heat during operation, which needs to be dissipated in time. For example, heat dissipation fins are installed on the electronic components, or a metal electric control box with good heat conductivity is used to help the electronic components dissipate heat. However, the electric control assembly is usually located inside the household appliance, and the internal environment of some household appliances is relatively humid (such as a washing machine). The electronic components cannot be exposed, which makes it difficult to install heat dissipation fins, and the assembly process is complicated and inefficient. Moreover, the metal electric control box has the problems of high cost and the risk of electric leakage, and its use is limited. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an electric control box which can satisfy the heat dissipation of electronic components and has low cost.

[0004] The present application also provides an electric control assembly using the above electric control box.

[0005] The present application also provides a motor assembly and a washing machine using the above electric control assembly.

[0006] The present application also provides a washing machine having the above motor assembly.

[0007] According to the electric control box of the first aspect of the present application, the electric control box includes a box body made of plastic and a heat conduction component made of metal. The heat conduction component is in close contact with the box body. The contact part of the heat conduction component is connected to the electronic components that generate heat, so as to conduct the heat of the electronic components to the heat conduction component. On the one hand, the heat is dissipated through the multiple fins of the heat conduction component, and on the other hand, the heat is dissipated to the outside through the box body, thereby helping the electronic components dissipate heat. Since the contact part is located in the inner cavity of the box body, the electronic components conduct heat through the heat conduction component, preventing the electronic components from being exposed to contact with water vapor and improving the use reliability. The heat conduction component is used to conduct and dissipate heat, and a metal electric control box is not needed, thereby reducing the manufacturing cost.

[0008] According to the electric control box of the first aspect of the present application, the electric control box includes a box body made of plastic and a heat conduction component made of metal. The heat conduction component is in close contact with the box body. The contact part of the heat conduction component is connected to the electronic components that generate heat, so as to conduct the heat of the electronic components to the heat conduction component. On the one hand, the heat is dissipated through the multiple fins of the heat conduction component, and on the other hand, the heat is dissipated to the outside through the box body, thereby helping the electronic components dissipate heat. Since the contact part is located in the inner cavity of the box body, the electronic components conduct heat through the heat conduction component, preventing the electronic components from being exposed to contact with water vapor and improving the use reliability. The heat conduction component is used to conduct and dissipate heat, and a metal electric control box is not needed, thereby reducing the manufacturing cost.

[0009] According to some embodiments of the first aspect of the present application, the heat-conducting component is integrally injection molded with the box body, the box body wraps the heat-conducting component, the contact portion protrudes into the inner cavity and is exposed, and the heat-dissipation fins protrude outside the box body and are exposed.

[0010] According to some embodiments of the first aspect of the present application, the bottom wall of the inner cavity is provided with a through hole, and the heat-conducting component is arranged in the through hole, and the peripheral wall of the heat-conducting component is connected to the inner wall of the through hole.

[0011] According to some embodiments of the first aspect of the present application, the peripheral wall of the heat-conducting component is provided with an insertion plate, and the insertion plate is embedded in the inner wall of the through hole.

[0012] According to some embodiments of the first aspect of the present application, the heat-conducting component is arranged in the inner cavity, and the heat-conducting component is attached to the bottom wall of the inner cavity.

[0013] According to some embodiments of the first aspect of the present application, a plurality of the heat-dissipation fins are arranged in parallel and vertically.

[0014] According to some embodiments of the first aspect of the present application, the heat-conducting component includes a bottom plate, the contact portion is arranged on the bottom plate, and the end surface of the contact portion connected to the bottom plate is greater than or equal to the end surface of the contact portion connected to the electronic component.

[0015] According to some embodiments of the first aspect of the present application, the bottom plate is provided with a clearance groove arranged at the periphery of the contact portion, and the depth of the clearance groove is greater than or equal to 1 mm.

[0016] According to some embodiments of the second aspect of the present application, the electronic control assembly includes the electronic control box and the electronic control board as described in the first aspect of the present application, and the electronic control board is located in the inner cavity and has an electronic component connected to the contact portion.

[0017] According to some embodiments of the second aspect of the present application, an insulating heat-conducting grease is arranged between the electronic component and the contact portion.

[0018] According to some embodiments of the second aspect of the present application, the contact portion is provided with at least one connecting hole, and a fastener is arranged in the connecting hole to fix the electronic component.

[0019] According to some embodiments of the second aspect of the present application, the box body is provided with a plurality of fixing columns arranged in the bottom wall of the inner cavity in a circumferential direction, and the electronic control board is fixed to the fixing columns by a fastener.

[0020] According to the electric control assembly of the second aspect of the embodiments of the present application, the fixing column has a supporting surface abutting against the electric control board, and the distance between the supporting surface and the contact portion is greater than or equal to the thickness of the electronic component in the axial direction of the fixing column.

[0021] According to some embodiments of the second aspect of the present application, the inner cavity is filled with potting glue, and the potting glue wraps the electric control board.

[0022] According to the electric machine assembly of the third aspect of the embodiments of the present application, the electric control box is provided with an assembling portion facing the electric machine body, and the assembling portion is fixedly connected with the electric machine body by fasteners.

[0023] According to the washing machine of the fourth aspect of the embodiments of the present application, the electric control box is provided with a mounting portion around the outer periphery, and the mounting portion is fixedly connected with the machine shell by fasteners.

[0024] According to the washing machine of the fifth aspect of the embodiments of the present application, the electric control assembly is the electric control assembly of the second aspect of the embodiments of the present application.

[0025] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] Additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0027] Figure 1 It is a front view of the electric control box of the first aspect of the embodiments of the present application;

[0028] Figure 2 It is a front view of the heat conduction component in the electric control box of the first aspect of the embodiments of the present application; Figure 1

[0029] It is a sectional view of A-A of the electric control box of the first aspect of the embodiments of the present application; Figure 3 Figure 2 It is a sectional view of B-B of the electric control box of the first aspect of the embodiments of the present application;

[0030] Figure 4 Figure 2 It is a partial sectional view of the electric control assembly of the second aspect of the embodiments of the present application;

[0031] Figure 5 It is a full sectional view of the electric control assembly of the second aspect of the embodiments of the present application;

[0032] Figure 6 It is a full sectional view of the electric control assembly of the second aspect of the embodiments of the present application;

[0033] Figure 7 It is a sectional view of A-A of the electric control assembly of the second aspect of the embodiments of the present application; Figure 6 ​​a close-up view of C of FIG. 1;

[0034] Figure 8 a structural schematic diagram of a motor assembly according to a third embodiment of the present application;

[0035] Figure 9 a structural schematic diagram of a motor assembly according to a third embodiment of the present application;

[0036] The reference signs are as follows:

[0037] The box body 100, the inner cavity 101, the through hole 102, the mounting portion 110, the fixing column 120, and the assembly portion 130;

[0038] The heat conduction component 200, the contact portion 201, the connecting hole 202, the empty slot 203, the heat conduction fin 210, and the plugboard 220;

[0039] The electric control board 300 and the electronic component 310;

[0040] The motor body 400. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0042] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, if there is a description of first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0044] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0045] Part of household appliances has an electric control assembly to control power components such as motors, compressors, etc. The electric control assembly usually includes an electric control box and an electric control board. The electric control board is located inside the electric control box to protect the electric control board from collision and water vapor contact. The electric control box also has a heat dissipation function. Some electronic components on the electric control board generate a lot of heat during operation, which needs to be dissipated in time by the electric control box.

[0046] In the related art, a heat sink can be installed on the electronic components to help the electronic components dissipate heat. However, the electric control assembly is usually located inside the household appliance, and the internal environment of some household appliances is relatively humid (such as a washing machine). The electronic components cannot be exposed, which makes it difficult to install a heat sink. The overall structure of the electric control assembly is relatively complex, and the assembly is cumbersome. Alternatively, a metal electric control box with good thermal conductivity can be used to help the electronic components dissipate heat. The metal electric control box has high cost and leakage risk, and its use is limited.

[0047] Therefore, an embodiment of the first aspect of the present application proposes an electric control box that can simplify the assembly steps of the electric control assembly, is suitable for humid environments, and has lower manufacturing cost than a metal electric control box.

[0048] Reference Figures 1 to 7 An embodiment of the first aspect of the present application proposes an electric control box. The electric control box includes a box body 100 and a heat conducting component 200. The box body 100 is made of plastic, such as plastic with a thermal conductivity greater than or equal to 0.3 W / (m·K). The box body 100 forms an inner cavity 101 for accommodating an electric control board 300. The electric control board 300 is usually placed in the inner cavity 101 and is fixedly connected to the box body 100 by screws or buckles. On the one hand, the box body 100 protects the electric control board 300 from collision. On the other hand, the box body 100 isolates the electric control board 300 in the closed inner cavity 101 to prevent water or water vapor from contacting the electric control board 300, which helps to improve the service life of the electric control board 300.

[0049] Since the electric control board 300 is located in the inner cavity 101, the heat generated by the electronic components 310 on the electric control board 300 needs to be dissipated, and therefore the heat conduction component 200 is designed, which is made of metal material, one side of the heat conduction component 200 is provided with the contact part 201 located in the inner cavity 101, and the other side is provided with a plurality of heat conduction fins 210, the heat conduction component 200 is in close contact with the box body 100, the plurality of heat conduction fins 210 extend to the outside of the box body 100, the contact part 201 is used to connect the electronic components 310 of the electric control board 300, the heat generated by the electronic components 310 is conducted to the heat conduction component 200 through the contact part 201, most of the heat is dissipated through the plurality of heat conduction fins 210, and a small part of the heat is conducted to the box body 100, and the heat is dissipated by the box body 100, so as to reduce the temperature of the electronic components 310, prevent the electronic components 310 from being damaged due to over-temperature, and improve the use reliability of the electric control assembly.

[0050] The electric control assembly adopts the electric control box of the first aspect of the embodiment of the application, the box body 100 made of plastic material is connected with the heat conduction component 200 made of metal material, the contact part 201 of the heat conduction component 200 is connected with the heat-generating electronic components 310, so as to conduct the heat of the electronic components 310 to the heat conduction component 200, on the one hand, the heat is dissipated by the plurality of heat conduction fins 210, and on the other hand, part of the heat is conducted to the box body 100, which helps to cool the electronic components 310 and is beneficial to the stable operation of the electronic components 310. Since the contact part 201 is located in the inner cavity 101 of the box body 100, the electronic components 310 conduct heat through the heat conduction component 200 without being exposed, which prevents the electronic components 310 from being exposed to water vapor and improves the use reliability; the heat is conducted by the heat conduction component 200, and a metal material electric control box is not needed, the box body 100 is made of plastic material, which is easy to process and has low cost, and can reduce the assembly cost of the electric control assembly and improve the economic benefit.

[0051] It can be understood that the corresponding heat conduction component 200 can be designed according to the shape of the box body 100, for example, the box body 100 is a rectangular body, and the heat conduction component 200 is a rectangular plate fitting the box body 100, the larger the area of the heat conduction component 200 in contact with the box body 100, the higher the heat conduction efficiency, which is beneficial to dissipating heat.

[0052] It can be understood that the heat conduction component 200 is embedded in the box body 100, which can be one side of the heat conduction component 200 located in the inner cavity 101 to form the contact part 201, or one end of the heat conduction component 200 located in the inner cavity 101 to form the contact part 201. In addition, the heat conduction component 200 itself can extend to the outer wall of the box body 100, on the one hand, the heat is dissipated by the plurality of heat conduction fins 210, and on the other hand, the heat is dissipated by the exposed surface of the heat conduction component 200, and the heat dissipation efficiency is higher.

[0053] It can be understood that the box body 100 is made of plastic material, and the box body 100 is formed by mold injection molding. In the injection molding, the heat conduction component 200 is integrally injection molded with the box body 100. After the plastic is cooled and shaped, the box body 100 wraps part of the heat conduction component 200, achieving the purpose of close contact. Figure 6 and Figure 7 As shown in the drawings, one side of the heat conduction component 200 is located in the inner cavity 101, and a protrusion forms a contact part 201. A plurality of heat conduction fins 210 are arranged on one side of the heat conduction component 200, and the plurality of heat conduction fins 210 are exposed outside the box body 100. The heat of the electronic components 310 is conducted through the contact part 201 and the heat conduction component 200, and is dissipated through the plurality of heat conduction fins 210 and the box body 100, helping the electronic components 310 to dissipate heat quickly. The box body 100 is made of plastic material, and is integrally formed with the heat conduction component 200 by injection molding, which is convenient for processing and manufacturing. After shaping, the electric control box is an integral part, which is convenient for assembly and simplifies the production process. A plurality of positioning holes can be provided on the heat conduction component 200, which are matched with positioning pins of the mold to accurately position the heat conduction component 200, prevent displacement of the heat conduction component 200, and ensure the relative position of the box body 100 and the heat conduction component 200 is accurate, and the two are closely combined.

[0054] It can be understood that considering that the role of the heat conduction component 200 is to conduct the heat generated by the electronic components 310 to the plurality of heat conduction fins 210 and the box body 100, the contact area between the heat conduction component 200 and the box body 100 is a key element. In the design, the peripheral wall of the heat conduction component 200 is wrapped by the box body 100, so that the heat can be conducted through the contact part of the heat conduction component 200 and the box body 100, meeting the requirement of heat dissipation rate. As shown in the drawings, Figure 2 The total area of the heat conduction component 200 is several times larger than the area of the contact part 201, preferably 8 to 10 times, which can arrange more heat conduction fins 210, which is beneficial to heat dissipation.

[0055] It can be understood that considering that the role of the heat conduction component 200 is to quickly conduct heat, the heat conduction component 200 is made of a metal plate, preferably an aluminum plate, which has the advantages of high thermal conductivity, high structural strength, and small specific gravity. One side of the metal plate forms a contact part 201 protruding into the inner cavity for contacting the electronic components 310, and the other side is provided with a plurality of heat conduction fins 210. In the production process, the heat conduction component 200 is made by casting or extrusion process, and then placed in the injection mold to manufacture the electric control box by integrally molding. The box body 100 and the heat conduction component 200 are in close contact and combination, and the metal plate can also increase the structural strength and rigidity of the box body 100, prevent the box body 100 from deforming, and improve the service life.

[0056] It can be understood that, as shown in the drawings, Figure 6 and Figure 7As shown, the peripheral wall of the heat conduction component 200 is provided with an insertion plate 220, which is embedded in the box body 100 after injection molding, so that the heat conduction component 200 is combined with the box body 100 more tightly, and the structure is more stable and reliable. The thickness of the insertion plate 220 is less than that of the heat conduction component 200, and a step is formed, which is combined with the box body 100 more tightly and has a larger contact area.

[0057] With reference to Figure 6 and Figure 7 It can be understood that the box body 100 is provided with a through hole 102, which penetrates the inside and outside of the box body 100, and the heat conduction component 200 is arranged in the through hole 102. The side of the heat conduction component 200 facing the inner cavity 101 is provided with a contact part 201, and the side of the heat conduction component 200 away from the inner cavity 101 is provided with a plurality of heat conduction fins 210. The heat conduction component 200 and the plurality of heat conduction fins 210 are both exposed and can dissipate heat, further improving the heat dissipation effect.

[0058] It should be understood that a rib can also be arranged on the periphery of the heat conduction component 200 instead of the insertion plate 220, and the box body 100 wraps the rib, which is beneficial to increase the contact area between the heat conduction component 200 and the box body 100, accelerate the conduction of heat, and increase the structural strength of the heat conduction component 200 and reduce the risk of deformation by using the rib.

[0059] It should be understood that, in order to facilitate heat transfer and processing, the heat conduction component 200 is arranged as a rectangular bottom plate, and the contact part 201 is a trapezoidal structure protruding on the bottom plate. The end surface of the contact part 201 connected to the bottom plate is greater than or equal to the end surface of the contact part 201 connected to the electronic components 310, so as to facilitate tool processing and facilitate heat conduction and accelerate heat dissipation.

[0060] With reference to Figure 2 , the bottom plate is provided with an empty slot 203 arranged around the contact part 201 to provide a gap to prevent the bottom plate from contacting the pins of the electronic components 310. The depth of the empty slot 203 is greater than or equal to 1mm, and the distance between the bottom plate and the pins of the electronic components 310 is also greater than or equal to 1mm, which has sufficient electrical clearance and meets the safety requirements.

[0061] It can be understood that in other embodiments, the heat-conducting component 200 is assembled with the box body 100 as a whole, the heat-conducting component 200 and the box body 100 are manufactured separately, and then the heat-conducting component 200 is fixed on the bottom wall of the inner cavity 101 to realize close fitting, and the plurality of heat-conducting fins 210 extend to the outside of the box body 100. The box body 100 can be provided with through holes 102 matched with the plurality of heat-conducting fins 210, and the plurality of heat-conducting fins 210 can pass through the through holes 102, or the box body 100 can be provided with a plurality of fin holes, the shape of the fin hole is the same as that of the heat-conducting fin 210, and the heat-conducting fin 210 can pass through the fin hole. Considering that the box body 100 is a plastic part, the heat-conducting component 200 and the box body 100 can be fixed by heat fusion, which can realize sealing and prevent water and water vapor from entering the inner cavity 101.

[0062] It can be understood that the heat-conducting component 200 can also be fixed on the outer wall of the box body 100, the box body 100 is provided with a through hole 102, the heat-conducting component 200 covers the through hole 102, and the contact part 201 of the heat-conducting component 200 passes through the through hole 102 to enter the inner cavity 101, and the box body 100 can wrap the peripheral wall of the contact part 201 or can have a gap. Since the heat-conducting component 200 and the plurality of heat-conducting fins 210 are located outside the box body 100, heat dissipation is more favorable.

[0063] Referring to Figures 4 to 6 , the plurality of heat-conducting fins 210 of the heat-conducting component 200 substantially cover the side surface of the heat-conducting component 200, the heat generated by the electronic components 310 is transmitted to the plurality of heat-conducting fins 210 through the contact part 201 and the heat-conducting component 200, and the plurality of heat-conducting fins 210 have a large surface area, which is favorable for heat dissipation. In actual use, an air flow can be driven by a fan, the air flow flows through the plurality of heat-conducting fins 210, quickly carries away the heat, and improves the heat dissipation efficiency.

[0064] It can be understood that the plurality of heat-conducting fins 210 are arranged in parallel and vertically, heat is dissipated to the air outside the electric control box through the heat-conducting fins 210, the air near the heat-conducting fins 210 absorbs heat, the temperature rises and the density decreases, and the air flows upward by itself to form a buoyancy-driven flow, which is favorable for carrying away heat. The vertically arranged heat-conducting fins 210 are parallel to the direction of gravity, which has the least effect on the buoyancy-driven flow, and is favorable for heat dissipation.

[0065] It can be understood that the more heat-conducting fins 210, the more favorable for heat dissipation. Considering that the heat-conducting component 200 is a rectangular body, the plurality of heat-conducting fins 210 are arranged on the side surface of the heat-conducting component 200 to accelerate the heat dissipation speed.

[0066] It can be understood that the heat-conducting fin 210 and the heat-conducting component 200 can be an integral structure, or can be a split structure, for example, the heat-conducting component 200 can be integrally formed with a plurality of heat-conducting fins 210, which is simple to process and low in cost. The plurality of heat-conducting fins 210 can also be independent parts, which are then assembled to the side of the heat-conducting component 200, and a suitable number is selected according to the heat dissipation requirement.

[0067] With reference to Figures 1 to 6 The electric control assembly provided by the second aspect of the present application comprises the electric control box and the electric control board 300 of the first aspect of the present application. The electric control box comprises the box body 100 and the heat-conducting component 200. The box body 100 is made of plastic with a heat-conducting coefficient greater than or equal to 0.3 W / (m·K). The box body 100 is formed with an inner cavity 101. The electric control board 300 is located in the inner cavity 101 of the box body 100. The inner cavity 101 can be filled with potting glue, which is used to wrap the electric control board 300 to prevent the electric control board 300 from contacting water or water vapor. The heat-conducting component 200 is made of metal material. One side of the heat-conducting component 200 is provided with a contact portion 201 located in the inner cavity 101. The other side of the heat-conducting component 200 is provided with a plurality of heat-conducting fins 210. The heat-conducting component 200 is in close contact with the box body 100. The plurality of heat-conducting fins 210 extend to the outside of the box body 100. The electric control board 300 has electronic components 310. The electronic components 310 generate heat during operation. The electronic components 310 are connected to the contact portion 201. Insulating heat-conducting grease can be applied on the contact portion 201. The insulating heat-conducting grease fills the gap between the electronic components 310 and the contact portion 201, and plays the role of insulation and heat conduction. Generally, the electric control board 300 is placed in the inner cavity 101 as a whole. The electric control board 300 is fixedly connected to the box body 100 by screws or buckles. On the one hand, the box body 100 plays a protective role to avoid the electric control board 300 from being impacted. On the other hand, the box body 100 plays a role of isolation to limit the electric control board 300 in the closed inner cavity 101, preventing water or water vapor from contacting the electric control board 300, which is conducive to improving the service life of the electric control board 300.

[0068] Since the electric control board 300 is located in the inner cavity 101, the heat generated by the electronic components 310 on the electric control board 300 during operation needs to be dissipated. The heat-conducting component 200 is in close contact with the box body 100. The contact portion 201 is connected to the electronic components 310 of the electric control board 300. The heat generated by the electronic components 310 is conducted to the heat-conducting component 200 through the contact portion 201. On the one hand, the heat is dissipated by the plurality of heat-conducting fins 210. On the other hand, part of the heat is conducted to the box body 100 to help the electronic components 310 cool down, preventing the electronic components 310 from being damaged due to over-temperature, and improving the use reliability of the electric control assembly.

[0069] The electronic control assembly adopts the electronic control box of the first aspect embodiment of the present invention. Since the contact part 201 is located in the inner cavity 101 of the box body 100, the electronic component 310 can be sealed in the inner cavity 101 and abut against the contact part 201 without being exposed, thus preventing the electronic component 310 from contacting moisture due to exposure and improving the reliability of use. The heat conduction component 200 is used to conduct heat, so there is no need to use a metal electronic control box. The box body 100 is made of plastic, which is easy to process and has a low cost. Moreover, it can reduce the assembly cost of the electronic control assembly and improve economic efficiency.

[0070] Reference Figure 2 and Figure 5 It is understood that the contact portion 201 is provided with at least one connection hole 202, and usually two connection holes 202 are provided and placed at both ends of the contact portion 201. The electronic component 310 is fixed to the contact portion 201 through the connection holes 202 and fasteners to maintain a tight connection, which is conducive to heat transfer.

[0071] Reference Figure 1 and Figure 6 It is understandable that the housing 100 is provided with multiple fixing posts 120. The number of fixing posts 120 is determined according to the shape of the inner cavity 101. The multiple fixing posts 120 are distributed on the bottom wall of the inner cavity 101, usually circumferentially spaced. The electronic control board 300 is fixed to the fixing posts 120 by fasteners, which can be bolts, directly screwed into the fixing posts 120. The end face of the fixing post 120 that contacts the electronic control board 300 is the support surface. In the axial direction of the fixing post 120, the distance between the support surface and the contact part 201 is greater than or equal to the thickness of the electronic component 310, which is sufficient to accommodate the electronic component 310, prevent the electronic control board 300 from deforming, and improve the stability of use.

[0072] Reference Figure 8 and Figure 9 The motor assembly proposed in the third aspect embodiment of the present invention includes a motor body 400 and an electronic control assembly according to the second aspect embodiment. The housing 100 of the electronic control assembly is provided with an assembly part 130 facing the motor body 400. The assembly part 130 is fixed to the motor body 400 by fasteners. Alternatively, the assembly part 130 can be first inserted into the insertion hole (not shown in the figure) of the motor body 400 and then fixed by fasteners to realize the mating installation of the motor body 400 and the electronic control assembly. Other parts of the motor body 400 and the housing 100 can also be fixed by fasteners.

[0073] The fourth aspect embodiment of the present application provides a washing machine, the washing machine is internally provided with the motor assembly of the third aspect embodiment, the motor assembly is composed of a motor body 400 and an electric control assembly, the electric control assembly is installed on the outer wall of the motor body 400, and the operation of the motor body 400 is controlled through the electric control board 300 of the electric control assembly. The box body 100 of the electric control assembly is made of plastic, the box body 100 is connected with the heat conduction component 200 made of metal, the contact part 201 of the heat conduction component 200 is located in the inner cavity 101 of the box body 100, and the electronic components 310 of the electric control board 300 can be sealed in the inner cavity 101 and abut against the contact part 201, without being exposed, so that the electronic components 310 are prevented from being contacted with water vapor due to exposure, and the use reliability is improved; heat is conducted by using the heat conduction component 200, the electric control box made of metal is not needed, the box body 100 is made of plastic, is easy to process, has low cost, and can reduce the assembly cost of the electric control assembly and improve economic benefits.

[0074] It can be understood that the electric control assembly and the motor body 400 are fixed as a whole, the box body 100 of the electric control assembly is provided with the mounting part 110, two mounting parts 110 are oppositely arranged on the two sides of the box body 100, the mounting part 110 is fixed to the shell of the washing machine through bolts and other fasteners, and the motor body 400 can also be provided with two mounting parts 110 and is fixed to the shell of the washing machine through bolts and other fasteners, so that the installation and fixation of the motor assembly are completed, and the structure is simple and convenient to operate.

[0075] The fifth aspect embodiment of the present application provides a washing machine, which comprises the electric control assembly of the second aspect embodiment, the electric control assembly is separated from the driving motor of the washing machine, the electric control assembly is installed in the interior of the washing machine and is electrically connected to the driving motor of the washing machine, so as to control the operation of the driving motor. The washing machine has all the technical effects of the electric control assembly, and details are not repeated.

[0076] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the present application.

Claims

1. An electric control box, characterized by, include: The box body is made of plastic and has an inner cavity for accommodating the electronic control board; A heat-conducting component, which is made of metal, has a contact portion on one side and multiple heat dissipation fins on the other side. The heat-conducting component is in close contact with the housing. The contact portion is located in the inner cavity to connect the electronic components of the control board. The heat dissipation fins extend to the outside of the housing. The heat-conducting component and the housing are integrally injection molded, and the housing encloses the heat-conducting component; the bottom wall of the inner cavity is provided with a through hole, the heat-conducting component is arranged in the through hole, and the peripheral wall of the heat-conducting component is connected to the inner wall of the through hole; the peripheral wall of the heat-conducting component is provided with an insert plate, and the insert plate is embedded in the inner wall of the through hole; the thickness of the insert plate is less than the thickness of the heat-conducting component to form a step; The heat-conducting component includes a base plate, and the contact portion is disposed on the base plate. The end face of the contact portion connected to the base plate is greater than or equal to the end face of the contact portion connected to the electronic component. The base plate is provided with a clearance groove, which is arranged around the contact portion.

2. The electric control box according to claim 1, wherein The contact portion protrudes into the inner cavity and is exposed, and the heat dissipation fins protrude to the outside of the housing and are exposed.

3. The electric control box according to claim 1, wherein The heat-conducting component is installed in the inner cavity and is in contact with the bottom wall of the inner cavity.

4. The electric control box according to any one of claims 1 to 3, characterized in that, The multiple heat dissipation fins are arranged in parallel and vertically.

5. The electrically controlled box according to claim 1, wherein, The depth of the clearance groove is greater than or equal to 1 mm.

6. An electrically controlled assembly, characterized by The device includes an electrical control box and an electrical control board as described in any one of claims 1 to 5, the electrical control board being located in the inner cavity and having electronic components connected to the contact portion.

7. The electrically controlled assembly of claim 6, wherein, An insulating and thermally conductive grease is provided between the electronic component and the contact portion.

8. The electrically controlled assembly of claim 6, wherein, The contact portion is provided with at least one connection hole, and a fastener is provided in the connection hole to fix the electronic component.

9. The electrically controlled assembly of claim 6, wherein, The box body is provided with multiple fixing posts, which are arranged circumferentially at intervals on the bottom wall of the inner cavity. The electronic control board is fixed to the fixing posts by fasteners.

10. The electrically controlled assembly of claim 9, wherein, The fixing post has a support surface that abuts against the electronic control board, and along the axial direction of the fixing post, the distance between the support surface and the contact portion is greater than or equal to the thickness of the electronic component.

11. The electrically controlled assembly of claim 6, wherein, The inner cavity is filled with potting compound, which encapsulates the electronic control board.

12. An electric machine assembly characterized by The device includes a motor body and an electronic control assembly as described in any one of claims 6 to 11, wherein the electronic control box is provided with a mounting portion facing the motor body, and the mounting portion is fixedly connected to the motor body by fasteners.

13. A laundry machine characterised in that, The device includes a housing and a motor assembly as described in claim 12, wherein the outer periphery of the electrical control box is provided with a mounting portion, and the mounting portion is fixedly connected to the housing by fasteners.

14. A laundry machine characterised in that, Includes the electronic control components as described in any one of claims 6 to 11.

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