CN115652592A - Electric control box, electric control assembly, motor assembly and washing machine - Google Patents

Abstract

The invention discloses an electric control box, an electric control assembly, a motor assembly and a washing machine, wherein the electric control box comprises a box body and a heat conduction component, the box body is made of plastics, an inner cavity for accommodating an electric control board is formed in the box body, the heat conduction component is made of metal materials, a contact part is arranged on one side of the heat conduction component, a heat conduction surface is arranged on the other side of the heat conduction component, the heat conduction surface is in close contact with the box body, the contact part is positioned in the inner cavity to be connected with electronic components of the electric control board, the box body of the electric control box is connected with the heat conduction component, and the contact part of the heat conduction component is connected with the electronic components which generate heat, so that the heat of the electronic components is conducted to the box body and then is radiated outwards through the box body to help the electronic components to dissipate heat. The heat conducting component is used for conducting heat, an electric control box made of metal materials is not needed, and the manufacturing cost is reduced.

Description

Automatically controlled box, automatically controlled subassembly, motor element and washing machine

Technical Field

The invention 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

In the correlation technique, automatically controlled subassembly includes automatically controlled box and installs the automatically controlled board in automatically controlled box inside, and the heat that some electronic components on the automatically controlled board produced in service is more, needs in time distribute away the heat, for example install the fin on electronic components, perhaps use the automatically controlled box of metal that the heat conductivity is good to help electronic components to dispel the heat. However, the electronic control component is usually located inside the household appliance, and the internal environment of part of the household appliance is relatively humid (such as a washing machine), so that electronic components cannot be exposed, and the heat sink is difficult to mount; the metal electric control box has the problems of high cost and electric leakage risk, and is limited in use.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the electric control box which can meet the heat dissipation of electronic components and is low in cost.

The invention also provides an electric control assembly applying the electric control box.

The invention also provides a motor component and a washing machine applying the electric control component.

The invention also provides a washing machine with the electric control assembly.

According to the first aspect of the invention, the electric control box comprises a box body and a heat conducting component, wherein the box body is made of plastic, an inner cavity for accommodating the electric control board is formed in the box body, the heat conducting component is made of metal materials, one side of the heat conducting component is provided with a contact part, the other side of the heat conducting component is provided with a heat conducting surface, the heat conducting surface is in close contact with the box body, and the contact part is positioned in the inner cavity to be connected with electronic components of the electric control board.

The electronic control box according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the box body of automatically controlled box is connected with heat-conducting component, heat-conducting surface and the box body in close contact with of heat-conducting component, and the contact site of heat-conducting component is connected with the electronic components who generates heat to conduct electronic components's heat to the box body, outwards disperse through the box body again, help electronic components dispels the heat. Because the contact part is positioned in the inner cavity of the box body, the electronic components conduct heat through the heat conduction part, the electronic components are prevented from being exposed to contact with water vapor, and the use reliability is improved; the heat conducting component is used for conducting heat, an electric control box made of metal materials is not needed, and the manufacturing cost is reduced.

According to some embodiments of the first aspect of the present invention, the heat conducting member is integrally injection molded with the case body, the case body wraps the heat conducting member, and the contact portion protrudes into the inner cavity and is exposed.

According to some embodiments of the first aspect of the present invention, a surface area of the heat-conducting member wrapped by the case is at least half of a surface area of the heat-conducting member.

According to some embodiments of the first aspect of the present invention, the heat conducting member is disposed in the cavity, and the heat conducting surface is attached to a bottom wall of the cavity.

According to some embodiments of the first aspect of the present invention, the outer wall of the case is provided with a heat dissipating rib, and the heat conducting surface faces the heat dissipating rib.

According to some embodiments of the first aspect of the present invention, the outer wall of the box body is provided with a plurality of the heat dissipation ribs, and the plurality of the heat dissipation ribs are arranged in parallel and arranged vertically.

According to some embodiments of the first aspect of the present invention, the area of the plurality of heat dissipating rib distribution areas is 40% to 50% of the surface area of the outer wall of the case.

According to some embodiments of the first aspect of the present invention, the heat-conducting member includes a bottom plate and an edge plate, the edge plate is located on a side of the bottom plate and perpendicular to the bottom plate, the bottom plate is connected to a bottom wall of the inner cavity, the edge plate is connected to a side wall of the inner cavity, and the contact portion is provided on the bottom plate.

According to some embodiments of the first aspect of the present invention, the bottom plate is formed with the contact portion through a stamping process, an end surface of the contact portion is rectangular, and an end surface width of the contact portion is equal to or less than an intersection line distance between the contact portion and the bottom plate.

According to some embodiments of the first aspect of the present invention, the heat conducting member is a heat pipe, one side of the heat pipe protrudes to form the contact portion, and the other side of the heat pipe forms the heat conducting surface.

According to some embodiments of the first aspect of the present invention, the heat conducting member comprises at least two heat pipes embedded in the case body, and the contact portion protrudes into the inner cavity and is exposed.

An electrical control assembly according to a second aspect of the present invention includes an electrical control box according to the first aspect of the present invention, and an electrical control board located in the inner cavity, the electrical control board having electronic components connected to the contact portions.

According to some embodiments of the second aspect of the present invention, an insulating thermal grease is disposed between the electronic component and the contact portion.

According to the electronic control assembly of the embodiment of the second aspect of the invention, the contact portion is provided with at least one connecting hole, and a fastening piece is arranged in the connecting hole to fix the electronic component.

According to the electric control assembly disclosed by the embodiment of the second aspect of the invention, the box body is provided with a plurality of fixing posts which are arranged on the bottom wall of the inner cavity at intervals along the circumferential direction, and the electric control board is fixed on the fixing posts through fasteners.

According to the electronic control assembly of the embodiment of the second aspect of the invention, the fixing column has a supporting surface abutting against the electronic control board, and the distance between the supporting surface and the contact part is greater than or equal to the thickness of the electronic component along the axial direction of the fixing column.

According to some embodiments of the second aspect of the invention, the inner cavity is filled with a potting adhesive, and the potting adhesive wraps the electronic control board.

According to the motor assembly of the third aspect of the invention, the motor assembly comprises a motor body and the electric control assembly of the second aspect of the invention, the electric control box is provided with a plug connector facing the motor body, and the motor body is provided with a plug hole matched with the plug connector.

The washing machine according to the fourth aspect of the invention comprises a machine shell and the motor assembly of the third aspect of the invention, wherein the outer periphery of the electric control box is provided with a mounting part which is fixedly connected with the machine shell through a fastening part.

The washing machine according to the fifth aspect embodiment of the invention comprises the electric control assembly according to the second aspect embodiment.

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.

Drawings

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

FIG. 1 is an exploded view of an electrical control assembly according to some embodiments of the second aspect of the present invention;

FIG. 2 is a bottom view of the electrical control assembly of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at C;

FIG. 5 is a cross-sectional view B-B of FIG. 2;

FIG. 6 is a schematic structural view of the heat-conductive member of FIG. 1;

fig. 7 is a schematic structural view of a motor assembly according to an embodiment of the third aspect of the present invention;

FIG. 8 is an exploded view of a motor assembly in accordance with an embodiment of the third aspect of the present invention;

FIG. 9 is a cross-sectional view of the electrical control assembly of FIG. 8;

FIG. 10 is a schematic structural diagram of the electrical control box of FIG. 8;

FIG. 11 is an exploded view of an electrical control assembly in accordance with further embodiments of the second aspect of the present invention;

fig. 12 is a schematic structural view of the heat-conductive member in fig. 11.

The reference numbers are as follows:

the heat dissipation structure comprises a box body 100, an inner cavity 101, a heat dissipation rib 110, a fixing column 120, a plug connector 130 and an installation part 140;

a heat conduction member 200, a contact portion 201, a positioning hole 202, a connection hole 203, a bottom plate 210, a side plate 220, and a heat pipe 230;

the electronic control board 300, the electronic component 310 and the pouring sealant 320;

motor body 400, plug hole 401.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Some household appliances have an electric control assembly to control power components (such as a motor and a compressor), the electric control assembly generally comprises an electric control box and an electric control plate, the electric control plate is positioned in an inner cover of the electric control box, and the electric control plate is protected by the electric control box so as to avoid collision and water vapor from contacting the electric control plate; the electric control box also has a heat dissipation function, and a part of electronic components on the electric control board generate more heat in the running process, so that the electric control box is required to dissipate the heat in time.

In the related art, a mode of installing radiating fins on electronic components can be adopted, the radiating fins are utilized to help the electronic components to radiate heat, however, the electric control assembly is usually located inside the household appliance, the internal environment of part of the household appliance is wet (such as a washing machine), the electronic components cannot be exposed, the radiating fins are difficult to install, the overall structure of the electric control assembly is complex, and the assembly is complicated. Or the electronic components are cooled by the aid of the metal electronic control box with good heat conductivity, and the metal electronic control box has the problems of high cost and electric leakage risk and is limited in use.

Therefore, the embodiment of the first aspect of the present invention provides an electrical control box, which can simplify the assembly steps of the electrical control assembly, is suitable for a humid environment, and has a lower manufacturing cost than a metal electrical control box.

Referring to fig. 1 to 6, an embodiment of the first aspect of the present invention provides an electronic control box, which includes a box body 100 and a heat conducting component 200, where the box body 100 is made of plastic, for example, plastic with a heat conductivity coefficient greater than or equal to 0.3W/(m · K), a heat dissipating rib 110 is disposed on an outer wall of the box body 100, an inner cavity 101 is formed in the box body 100, the inner cavity 101 is used to accommodate an electronic control board 300, the electronic control board 300 is generally disposed in the inner cavity 101, and the electronic control board 300 is fixedly connected to the box body 100 through screws or fasteners, on one hand, the box body 100 plays a role of protecting and avoiding the electronic control board 300 from being collided; on the other hand, the box body 100 plays an isolation role, the electric control board 300 is limited in the closed inner cavity 101, water or water vapor is prevented from contacting the electric control board 300, and the service life of the electric control board 300 is prolonged.

Because the automatically controlled board 300 is located inner chamber 101, the heat that electronic components 310 on the automatically controlled board 300 produced in service need to distribute, therefore the design has heat conduction component 200, heat conduction component 200 is made by metal material, one side of heat conduction component 200 is provided with and is located inner chamber 101 and forms contact site 201, the opposite side forms the heat-conducting surface, the heat-conducting surface is with body 100 in close contact with, contact site 201 is used for connecting electronic components 310 of automatically controlled board 300, the heat that electronic components 310 produced conducts to heat conduction component 200 through contact site 201, and then conduct to box body 100, utilize box body 100 and heat dissipation muscle 110 to disperse the heat and go out, thereby reduce electronic components's 310 temperature, prevent that electronic components 310 from damaging because of the overtemperature, improve the reliability in utilization of automatically controlled subassembly.

The electronic control assembly adopts the electronic control box of the first aspect of the invention, the box body 100 of the electronic control box is connected with the heat conducting component 200 made of metal, and the contact part 201 of the heat conducting component 200 is connected with the electronic component 310 which generates heat, so that the heat of the electronic component 310 is conducted to the box body 100 and then dissipated outwards, and the heat dissipation of the electronic component 310 is facilitated. Because the contact part 201 is positioned in the inner cavity 101 of the box body 100, the electronic component 310 conducts heat through the heat conduction part 200 without being exposed, the electronic component 310 is prevented from contacting water vapor due to exposure, and the use reliability is improved; the heat conducting component 200 is used for conducting heat, an electric control box made of metal is not needed, the box body 100 is made of plastic, the processing is easy, the cost is low, the manufacturing cost of the electric control box can be reduced, and the economic benefit is improved.

It can be understood that the corresponding heat conducting member 200 can be designed according to the shape of the box 100, for example, if the box 100 is a rectangular body, the heat conducting member 200 is a plate adapted to the box 100, and the larger the contact area between the heat conducting member 200 and the box 100 is, the higher the heat transfer efficiency is, which is beneficial to dissipating heat.

It is understood that the heat-conducting member 200 is embedded in the case 100, and one side surface of the heat-conducting member 200 is located in the cavity 101 to form the contact portion 201, or one end portion of the heat-conducting member 200 is located in the cavity 101 to form the contact portion 201. In addition, a part of the heat conducting member 200 may extend to the outer wall of the case 100, on one hand, the heat conducting member 200 conducts the heat of the electronic component 310 to the case 100 for heat dissipation, and on the other hand, the heat conducting member 200 itself can dissipate the heat at the same time, so that the heat dissipation efficiency is higher.

It can be understood that the box body 100 is made of plastic, the box body 100 is injection molded through a mold, in the injection molding, the heat conducting part 200 and the box body 100 are integrally injection molded, after the plastic is cooled and shaped, the box body 100 wraps a part of the heat conducting part 200 to achieve the purpose of close contact, the other part of the heat conducting part 200 extends to the inner cavity 101 to serve as the contact part 201, the heat of the electronic component 310 is conducted to the box body 100 through the contact part 201 and the heat conducting part 200, and the electronic component 310 is helped to dissipate heat quickly. The box body 100 is made of plastic and is integrally formed with the heat conducting component 200 through injection molding, so that the box is convenient to process and manufacture, and the formed electric control box is an integral piece, so that the assembly is convenient, and the production flow is simplified. The heat-conducting member 200 is provided with a plurality of positioning holes 202, and the positioning holes 202 are matched with positioning pins of a mold to accurately position the heat-conducting member 200, so that the heat-conducting member 200 is prevented from shifting, the heat-conducting member 200 is wrapped by the box body 100, and the heat-conducting member 200 and the box body are tightly combined.

It can be understood that, considering that the heat-conducting member 200 is used to conduct the heat generated by the electronic component 310 to the case 100, wherein the contact area between the heat-conducting member 200 and the case 100 is a critical element, the surface area of the heat-conducting member 200 wrapped by the case 100 is at least half of the surface area of the heat-conducting member 200, so that the heat can be conducted through the contact surface between the heat-conducting member 200 and the case 100, and the heat dissipation rate is satisfied. Referring to fig. 1 and 3, the surface area of the heat conduction member 200 wrapped by the case 100 exceeds 90% of the surface area of the heat conduction member 200, the heat conduction member 200 only retains the contact portion 201 having a shape and a size close to those of the electronic component 310, and the rest is wrapped by the case 100, so that when the heat of the electronic component 310 is conducted to the heat conduction member 200, the heat can be quickly conducted to the case 100 in a wide range, and the heat dissipation is accelerated.

It can be understood that, considering that the heat-conducting member 200 functions to rapidly conduct heat, the heat-conducting member 200 is a metal plate, preferably an aluminum plate, which has advantages of high heat conductivity, structural strength, and low specific gravity. A portion of the metal plate forms a contact 201 protruding into the cavity for contacting the electronic component 310. In the production process, the metal plate is made into the heat conducting part 200 in a stamping mode, then the heat conducting part 200 is placed into an injection mold, the electric control box is manufactured in an injection molding and integrated forming mode, the box body 100 is in close contact with and combined with the heat conducting part 200, the structural strength and rigidity of the box body 100 can be improved by utilizing the metal plate, the box body 100 is prevented from deforming, and the service life is prolonged.

Referring to fig. 3 and 6, it can be understood that the heat conducting member 200 includes a bottom plate 210 and a side plate 220, the side plate 220 may be disposed on one side of the bottom plate 210, the side plates 220 may be disposed on both sides of the bottom plate 210, or the side plates 220 are disposed on multiple sides of the bottom plate 210, the contact portion 201 is disposed on the bottom plate 210, the bottom plate 210 corresponds to the bottom wall of the inner cavity 101, and the side plate 220 corresponds to the side wall of the inner cavity 101, so as to increase the contact area between the metal plate and the box 100, which is beneficial to conducting heat, and increase the structural strength of the box 100 by using the side plate 220, which reduces the risk of deformation. In addition, because the bottom plate 210 and the side plate 220 are perpendicular to each other or form a certain included angle, after the box body 100 and the metal plate are integrally injection-molded, the binding force can be increased, and the service life is prolonged. The heat conducting surface may cover the side plate 220, and a plurality of heat dissipating ribs 110 may be correspondingly disposed corresponding to the bottom plate 210 and the two side plates 220, so as to further improve the heat dissipating efficiency.

It should be understood that, the bottom plate 210 is formed by stamping the contact portion 201, and in view of convenience of demolding, a trapezoidal stamping die is used, for example, the end surface of the contact portion 201 is rectangular, and the width of the end surface of the contact portion 201 is less than or equal to the intersection line distance between the contact portion 201 and the bottom plate 210, so as to facilitate demolding, reduce deformation during stamping, and maintain uniform wall thickness, which is beneficial to heat conduction.

It should be understood that the metal plate may also have a rib disposed at the edge of the bottom plate 210 instead of the side plate 220, and the box 100 is wrapped with the rib, which is beneficial to increase the contact area between the metal plate and the box 100, accelerate heat conduction, increase the structural strength of the box 100 by the rib, and reduce the risk of deformation.

Referring to fig. 11 and 12, in other embodiments, the heat conducting member 200 is a heat pipe 230, a portion of the heat pipe 230 protrudes to form the contact portion 201, and other portions of the heat pipe 230 are wrapped by the case 100. The heat generated by the electronic component 310 during operation is conducted to the heat pipe 230 through the contact portion 201, and then conducted to the box body 100 through the heat pipe 230, and the heat is dissipated by the box body 100, so that the electronic component 310 is cooled, and the electronic component 310 is prevented from being damaged due to over-temperature.

It should be understood that a heat pipe is a widely used heat transfer device, and includes a pipe shell made of metal material and a wick made of capillary porous material, wherein the pipe shell is pumped to negative pressure and then filled with a proper amount of working liquid, and the wick close to the inner wall is filled with liquid and then sealed. One end of the heat pipe is an evaporation section (heating section), the other end is a condensation section (cooling section), and a heat insulation section can be arranged in the middle according to application requirements. When the evaporation section contacts the heat source (electronic component 310), the working liquid in the heat pipe is heated and evaporated, and the heat is taken away, the heat is the evaporation latent heat of the working liquid, the steam flows to the condensation section of the heat pipe from the central channel, and is condensed into liquid, and simultaneously releases latent heat, and under the action of capillary force, the liquid flows back to the evaporation section, and a closed cycle is completed, so that a large amount of heat is transferred to the condensation section from the evaporation section, the condensation section is embedded into the inside of the box body 100, and the pipe shell made of metal materials is used for conducting the heat to the box body 100, so that the purpose of heat dissipation is achieved.

Referring to fig. 11 and 12, it can be understood that the heat conducting member 200 includes two heat pipes 230, the two heat pipes 230 are arranged in a U-shape, one ends of the two heat pipes 230 are embedded in the case 100, and the other ends of the two heat pipes 230 form contact portions 201 for contacting the electronic component 310, and heat generated by the electronic component 310 is conducted to the two heat pipes 230 and then conducted to the case 100 through the two heat pipes 230, so that the heat transfer efficiency is higher. Of course, three heat pipes 230 may be used, or a greater number of heat pipes 230 may be specifically determined according to the volume of the electronic control box and the heat dissipation requirement, and is not limited herein.

Of course, a heat pipe 230 may also be adopted, the heat pipe 230 is U-shaped or other shapes, the middle part of the heat pipe 230 protrudes to form the contact portion 201 (evaporation section), and the end part of the heat pipe 230 is used as a condensation section, which can also conduct heat quickly, so as to achieve the purpose of cooling the electronic component 310.

Referring to fig. 1 to 5, the heat dissipating rib 110 of the case 100 is located on a side of the case 100 away from the inner cavity 101, and corresponds to the position of the heat conducting member 200, the heat generated by the electronic component 310 is transferred to the case 100 through the heat conducting member 200, and the heat dissipating rib 110 is utilized by the case 100 to accelerate the heat dissipation. In practical use, the fan can be used for driving airflow, and the airflow flows through the heat dissipation ribs 110, so that heat is taken away quickly, and the heat dissipation efficiency is improved.

It can be understood that the outer wall of box body 100 sets up a plurality of heat dissipation muscle 110, a plurality of heat dissipation muscle 110 are parallel arrangement and along vertical arrangement, the heat distributes to the outer air of automatically controlled box in through heat dissipation muscle 110, the near air heat absorption of heat dissipation muscle 110, the temperature rise and density reduce, can flow in the line, form buoyancy drive flow, be favorable to taking away the heat, vertical arrangement's heat dissipation muscle 110 is on a parallel with the direction of gravity, influence to buoyancy drive flow is minimum, be favorable to the heat dissipation.

It can be understood that the more the heat dissipation ribs 110 are, the more the heat dissipation is facilitated, and through experiments, the area of the distribution area of the plurality of heat dissipation ribs 110 is 40% to 50% of the surface area of the outer wall of the box body 100, so that a better heat dissipation effect can be obtained. Considering that the case 100 is generally rectangular and the bottom wall of the case 100 has the largest area, the plurality of heat dissipation ribs 110 are disposed at the bottom wall of the case 100 and cover the bottom wall of the case 100, and the heat conduction member 200 corresponds to the plurality of heat dissipation ribs 110 to quickly conduct heat to the plurality of heat dissipation ribs 110, thereby increasing the heat dissipation speed.

It can be understood that the distance between the heat dissipating ribs 110 and the heat conducting member 200 should be as small as possible to accelerate the heat conduction, and usually the distance is set to 1mm to 2mm, and 1.5mm can be adopted, so as to not only meet the requirement of wrapping the heat conducting member 200, but also quickly conduct the heat from the heat conducting member 200 to the heat dissipating ribs 110, which is beneficial to the heat dissipation.

It can be understood that the heat dissipation ribs 110 and the box 100 may be an integral structure or a separate structure, for example, if the box 100 is an injection molded part, a plurality of heat dissipation ribs 110 may be integrally injection molded, and the heat dissipation ribs are easy to process and low in cost. The plurality of heat dissipation ribs 110 may also be independent components, and then assembled to the outer wall of the case 100, and a metal bracket may be added inside the heat dissipation ribs 110 to help heat transfer and improve the heat dissipation effect.

Referring to fig. 1 to 6, an electronic control assembly according to a second embodiment of the present invention includes an electronic control box according to the first embodiment and an electronic control board 300, where the electronic control box includes a box body 100 and a heat conducting member 200, the box body 100 is made of plastic with a thermal conductivity of 0.3W/(m · K) or more, the box body 100 is formed with an inner cavity 101, the electronic control board 300 is located in the inner cavity 101 of the box body 100, one side of the metal heat conducting member 200 is provided with a contact portion 201 located in the inner cavity 101, and the other side of the metal heat conducting member 200 is formed with a heat conducting surface in close contact with the box body 100, the electronic control board 300 has an electronic component 310, the electronic component 310 generates heat during operation, the electronic component 310 is connected to the contact portion 201, and an insulating and heat conducting grease can be applied on the contact portion 201 to fill a gap between the electronic component 310 and the contact portion 201, and plays roles of insulation and heat conduction. Usually, the electric control board 300 is integrally arranged in the inner cavity 101, and the electric control board 300 is fixedly connected with the box body 100 through screws or buckles, so that on one hand, the box body 100 plays a role in protection, and the electric control board 300 is prevented from being collided; on the other hand, the box body 100 plays an isolation role, the electric control board 300 is limited in the closed inner cavity 101, water or water vapor is prevented from contacting the electric control board 300, and the service life of the electric control board 300 is prolonged.

Because automatically controlled board 300 is located inner chamber 101, the heat that electronic components 310 on automatically controlled board 300 produced in service need distribute, therefore the design has heat conduction component 200, heat conduction component 200 and box 100 in close contact with, the electronic components 310 of automatically controlled board 300 is connected to contact site 201, the heat that electronic components 310 produced passes through contact site 201 conduction to heat conduction component 200, reconvey to box 100, utilize box 100 to distribute the heat away, thereby reduce electronic components 310's temperature, prevent that electronic components 310 from damaging because of overtemperature, improve electronic control assembly's reliability of use.

The electronic control assembly adopts the electronic control box of the first aspect of the invention, the box body 100 of the electronic control box is connected with the heat conducting component 200, and the contact part 201 of the heat conducting component 200 is connected with the electronic component 310 which generates heat, so that the heat of the electronic component 310 is conducted to the box body 100 and then radiated outwards, and the heat dissipation of the electronic component 310 is facilitated. Because the contact part 201 is positioned in the inner cavity 101 of the box body 100, the electronic component 310 can be sealed in the inner cavity 101 to abut against the contact part 201 without being exposed, so that the electronic component 310 is prevented from contacting water vapor due to exposure, and the use reliability is improved; the heat conducting component 200 is used for conducting heat, an electric control box made of metal is not needed, the box body 100 is made of plastic, the processing is easy, the cost is low, the manufacturing cost of the electric control box can be reduced, and the economic benefit is improved.

Referring to fig. 6 and 9, it can be understood that the contact portion 201 is provided with at least one connection hole 203, and two connection holes 203 are generally provided and are respectively disposed at two ends of the contact portion 201, so that the electronic component 310 is fixed to the contact portion 201 through the connection holes 203 and the fasteners, and the tight connection is maintained, which is beneficial to heat transfer.

Referring to fig. 9 and 10, it can be understood that the box 100 is provided with a plurality of fixing posts 120, the number of the fixing posts 120 is set according to the shape of the inner cavity 101, the plurality of fixing posts 120 are distributed on the bottom wall of the inner cavity 101 and are generally uniformly distributed at intervals in the circumferential direction, the electronic control board 300 is fixed to the fixing posts 120 through fasteners, and the fasteners can be bolts directly screwed into the fixing posts 120. It can be understood that the end surface of the fixing post 120 contacting the electronic control board 300 is a supporting surface, and in the axial direction of the fixing post 120, the thickness of the supporting surface and the contact portion 201 is greater than or equal to the thickness of the electronic component 310, which is enough to accommodate the electronic component 310, so as to avoid deformation of the electronic control board 300 and improve the use stability.

Referring to fig. 7 and 8, a motor assembly according to a third embodiment of the present invention is provided, including a motor body 400 and an electronic control assembly according to the second embodiment, a box 100 of the electronic control assembly is provided with a plug 130 facing the motor body 400, the motor body is provided with a plug hole 401, the plug 130 is inserted into the plug hole 401, so as to implement the matching installation of the motor body 400 and the electronic control assembly, and may further be fixed by a fastener.

In a fourth embodiment of the present invention, a washing machine is provided, in which the motor assembly of the third embodiment is disposed inside a casing, an electric control assembly is mounted on an outer wall of the motor body 400, and the operation of the motor body 400 is controlled by the electric control board 300. The electronic control assembly comprises the electronic control box and the electronic control board 300, the box body 100 of the electronic control box is made of plastic with a heat conductivity coefficient of 0.3W/(m.K) or more, the outer wall of the box body 100 is provided with the heat dissipation ribs 110, the box body 100 is provided with the inner cavity 101, the electronic control board 300 is positioned in the inner cavity 101 of the box body 100, one side of the heat conduction component 200 is provided with a contact part 201 positioned in the inner cavity 101, the other side of the heat conduction component 200 is provided with a heat conduction surface which is in close contact with the body 100, the electronic control board 300 is provided with the electronic component 310, the electronic component 310 can generate heat during operation, the electronic component 310 is connected with the contact part 201, insulating and heat conducting grease can be coated on the contact part 201, the insulating and heat conducting grease fills a gap between the electronic component 310 and the contact part 201, and plays roles of insulation and heat conduction. Usually, the electric control board 300 is integrally arranged in the inner cavity 101, and the electric control board 300 is fixedly connected with the box body 100 through screws or buckles, so that on one hand, the box body 100 plays a role in protection and the electric control board 300 is prevented from being collided; on the other hand, the box body 100 plays an isolation role, the electric control board 300 is limited in the sealed inner cavity 101, the pouring sealant 320 is injected into the inner cavity 101 in consideration of the fact that the environment inside the washing machine is relatively humid, the pouring sealant 320 wraps the electric control board 300 to isolate the electric control board 300, water or water vapor is prevented from contacting the electric control board 300, and the service life of the electric control board 300 is prolonged. The heat of the electronic component 310 is conducted to the heat conducting member 200 through the contact portion 201, and then conducted to the box body 100 through the heat conducting member 200, and is outwards radiated through the box body 100 and the radiating ribs 110, so that the heat of the electronic component 310 is radiated, and the electronic component 310 is prevented from being over-heated.

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 installation part 140, two installation parts 140 are oppositely arranged on two sides of the box body 100, the installation part 140 is fixed on the shell of the washing machine through fasteners such as bolts, the motor body 400 can also be provided with two installation parts 140, and then the two installation parts are fixed on the shell of the washing machine through fasteners such as bolts, so that the installation and fixation of the motor assembly are completed, the structure is simple, and the operation is convenient.

In a fifth aspect of the present invention, a washing machine is provided, which has the electric control assembly of the second aspect, the electric control assembly is separate from a driving motor of the washing machine, and the electric control assembly is installed inside the washing machine and electrically connected to the driving motor of the washing machine, so as to control the operation of the driving motor.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (20)

1. Automatically controlled box, its characterized in that includes:

the box body is made of plastics, and an inner cavity for accommodating the electric control board is formed in the box body;

the heat conduction component is made of metal materials, one side of the heat conduction component is provided with a contact part, the other side of the heat conduction component is provided with a heat conduction surface, the heat conduction surface is in close contact with the box body, and the contact part is positioned in the inner cavity to be connected with electronic components of the electronic control board.

2. The electrical control box according to claim 1, wherein the heat conducting member is integrally injection molded with the box body, the box body wraps the heat conducting member, and the contact portion protrudes into the inner cavity and is exposed.

3. An electrical control box according to claim 2, wherein the surface area of the heat conducting member that is wrapped by the box body is at least half of the surface area of the heat conducting member.

4. An electrical control box according to claim 1, wherein the heat conducting member is disposed in the cavity, and the heat conducting surface is attached to a bottom wall of the cavity.

5. The electrical control box according to any one of claims 1 to 4, wherein the outer wall of the box body is provided with a heat dissipating rib, and the heat conducting surface faces the heat dissipating rib.

6. The electrical control box according to claim 5, wherein a plurality of the heat dissipation ribs are arranged on the outer wall of the box body, and the plurality of the heat dissipation ribs are arranged in parallel and vertically.

7. The electrical box according to claim 6, wherein the area of the plurality of heat dissipation rib distribution areas is 40% to 50% of the surface area of the outer wall of the box body.

8. The electrical control box according to any one of claims 1 to 4, wherein the heat-conducting member includes a bottom plate and an edge plate, the edge plate is located on a side of the bottom plate and perpendicular to the bottom plate, the bottom plate is connected to a bottom wall of the inner cavity, the edge plate is connected to a side wall of the inner cavity, and the contact portion is provided on the bottom plate.

9. The electrical control box according to claim 8, wherein the bottom plate is formed with the contact portion through a stamping process, an end surface of the contact portion is rectangular, and an end surface width of the contact portion is less than or equal to an intersection line interval between the contact portion and the bottom plate.

10. The electrical control box according to any one of claims 1 to 4, wherein the heat conduction member is a heat pipe, one side of the heat pipe protrudes to form the contact portion, and the other side of the heat pipe forms the heat conduction surface.

11. The electrical control box according to claim 10, wherein said heat conducting member comprises at least two of said heat pipes, said contact portion protruding into said inner cavity and being exposed.

12. An electrical control assembly comprising an electrical control pod according to any of claims 1 to 11 and an electrical control board located in the internal cavity, the electrical control board having electronic components connected to the contact portions.

13. An electrical control assembly according to claim 12, wherein an insulating and thermally conductive grease is provided between the electronic component and the contact portion.

14. An electronic control assembly according to claim 12, wherein the contact portion is provided with at least one attachment aperture in which a fastener is provided to secure the electronic component.

15. The electrical control assembly according to claim 12, wherein the box body is provided with a plurality of fixing posts arranged at intervals along a circumferential direction on a bottom wall of the inner cavity, and the electrical control board is fixed to the fixing posts through fasteners.

16. The electronic control assembly according to claim 15, wherein the fixing post has a supporting surface abutting against the electronic control board, and a distance between the supporting surface and the contact portion in an axial direction of the fixing post is greater than or equal to a thickness of the electronic component.

17. The electrical control assembly of claim 12, wherein the cavity is filled with a potting adhesive, the potting adhesive encapsulating the electrical control board.

18. An electric motor assembly, characterized in that it comprises an electric motor body and an electric control assembly according to any one of claims 12 to 17, said electric control box being provided with a plug-in unit facing said electric motor body, said electric motor body being provided with a plug-in hole for engaging said plug-in unit.

19. The washing machine, characterized by comprising a machine shell and the motor assembly as claimed in claim 18, wherein the periphery of the electric control box is provided with a mounting part, and the mounting part is fixedly connected with the machine shell through a fastening piece.

20. Laundry washing machine, characterized in that it comprises an electrically controlled assembly according to any one of claims 12 to 17.

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