Electric control box assembly and air conditioner outdoor unit with same

Abstract

The invention discloses an electric control box assembly and an air conditioner outdoor unit with the electric control box assembly, the electric control box assembly comprises an electric control box, the electric control box defines a first cavity and a heat dissipation air channel, the first cavity is not communicated with the heat dissipation air channel, and the heat dissipation air channel is provided with a heat dissipation inlet and a heat dissipation outlet; the electric control element is arranged in the first cavity, and the heating element is arranged in the heat dissipation air channel. According to the electric control box assembly, the first cavity and the heat dissipation air channel which are not communicated are defined in the electric control box, so that the use safety of the electric control element can be guaranteed, the ignition event of the electric control element caused by refrigerant leakage is effectively avoided, meanwhile, the heat dissipation effect of the heating element can be guaranteed, and the service life of the electric control element is prolonged. Therefore, the heating element can not break down due to overheating in the normal use process, the use safety of the electric control box assembly can be improved, and the safety and reliability of the air conditioner outdoor unit can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an electric control box assembly and an air conditioner outdoor unit having the electric control box assembly. Background Art

[0002] The operation of the electric control module in the electric control box of the air conditioner outdoor unit will generate heat. In order to cool down, the general electric control box must add an air duct, which is connected to the external space to ensure the heat dissipation of the components in the electric control module and facilitate cooling. However, when the air conditioner outdoor unit has a refrigerant leak or other faults, the refrigerant will also enter the electric control box along the air duct, causing damage to the electrical components in the electric control box. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention is to propose an electric control box assembly, which can ensure the safe use of electric control elements and effectively avoid the occurrence of ignition events caused by refrigerant leakage of electric control elements. At the same time, it can also ensure the heat dissipation effect of heating elements, so that the heating elements will not fail due to overheating during normal use, thereby improving the safety of the use of the electric control box assembly, thereby improving the safety and reliability of the air conditioner outdoor unit.

[0004] The present invention also provides an air-conditioning outdoor unit having the electric control box assembly.

[0005] According to the first aspect of the present invention, an electric control box assembly is used for an air conditioner outdoor unit, and the electric control box assembly includes: an electric control box, the electric control box defines a first cavity and a heat dissipation duct, the first cavity is not connected to the heat dissipation duct, and the heat dissipation duct has a heat dissipation inlet and a heat dissipation outlet; an electric control element and a heating element, the electric control element is arranged in the first cavity, and the heating element is arranged in the heat dissipation duct.

[0006] According to the electric control box assembly of the present invention, by defining a non-connected first cavity and a heat dissipation duct in the electric control box, the safe use of the electric control element can be ensured, and the occurrence of ignition incidents of the electric control element due to refrigerant leakage can be effectively avoided. At the same time, the heat dissipation effect of the heating element can be ensured, so that the heating element will not malfunction due to overheating during normal use, thereby improving the safety of the use of the electric control box assembly, thereby improving the safety and reliability of the air-conditioning outdoor unit.

[0007] According to some embodiments of the present invention, the electric control box includes: a box body and a box cover, one side of the box body is open, the box cover is arranged on the open side of the box body, the heating element and the electric control element are both arranged on the side of the box cover facing the box body, and the heat dissipation inlet and the heat dissipation outlet are both formed on the box body.

[0008] According to some embodiments of the present invention, the electric control box assembly further includes a cover plate, which is connected to the box cover and covers the outside of the heating element, and the cover plate cooperates with the box body to define the heat dissipation duct.

[0009] According to some embodiments of the present invention, the cover plate includes an annular portion and a baffle portion, the annular portion is connected to the box cover and extends in a ring shape along the circumference of the heating element, and the baffle portion is connected to the side of the annular portion away from the box cover and extends along the circumference of the annular portion; the box body is provided with a surrounding plate, which extends along the circumference of the annular portion, and the peripheral edge of the surrounding plate is sealed and connected to the peripheral edge of the cover plate to define the heat dissipation duct.

[0010] According to some embodiments of the present invention, the enclosure includes a side plate portion and a top plate portion, the side plate portion extending along the circumference of the annular portion and docking with the baffle portion in the circumference of the annular portion, and the top plate portion being connected to an end of the side plate portion away from the box cover and being sealedly connected to the baffle portion.

[0011] According to some embodiments of the present invention, the electric control box assembly further comprises an electric control board, which is disposed on a side of the box cover facing the box body, and the electric control element and the heating element are both disposed on the electric control board.

[0012] According to some embodiments of the present invention, the electric control box assembly further includes: a heat sink, which is disposed outside the first cavity and the heat dissipation duct, and is connected to the electric control board to dissipate heat for the electric control board.

[0013] According to some embodiments of the present invention, the heat dissipation inlet is arranged toward the heat dissipation element and communicates with the heat dissipation element, and the heat dissipation outlet is arranged away from the heat dissipation element.

[0014] According to some embodiments of the present invention, the heating element includes a base and a heating body disposed on the base, and the base is fixedly connected to the electric control board.

[0015] According to some embodiments of the present invention, the box body is connected to the box cover by snap-fitting and / or by fasteners.

[0016] According to some embodiments of the present invention, the heating element is a PFC inductor.

[0017] An air conditioner outdoor unit according to a second aspect of the present invention comprises a housing, a wind wheel and an electric control box assembly according to the first aspect of the present invention, wherein the wind wheel and the electric control box assembly are both arranged in the housing.

[0018] According to the air conditioner outdoor unit of the present invention, the overall performance of the air conditioner outdoor unit is improved by providing the electric control box assembly of the first aspect.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of an outdoor unit of an air conditioner according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of an electric control box assembly according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of an electric control box assembly from another angle according to an embodiment of the present invention;

[0023] Figure 4 is along Figure 3 A cross-sectional view of the line AA shown in FIG.

[0024] Figure 5 is a partial schematic diagram of an electric control box assembly according to an embodiment of the present invention;

[0025] Figure 6 is a cross-sectional view of the electric control box assembly at another angle according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 1000. Air conditioner outdoor unit;

[0028] 100. Electric control box assembly;

[0029] 10. electric control box; 11. box body; 111. enclosure; 1111. side plate; 1112. top plate; 12. box cover; 13. heat dissipation duct; 131. heat dissipation inlet; 132. heat dissipation outlet; 14. first cavity;

[0030] 20. Electronic control components;

[0031] 30. Heating element; 31. Base; 32. Heating body;

[0032] 40. cover plate; 50. electric control panel; 60. heat sink;

[0033] 200. Shell; 300. Wind wheel. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] First, refer to Figure 1 The air-conditioning outdoor unit 1000 according to the second embodiment of the present invention is briefly described. The air-conditioning outdoor unit 1000 includes the electric control box assembly 100 according to the first embodiment of the present invention.

[0036] like Figure 1 As shown, the air conditioner outdoor unit 1000 according to the second aspect of the present invention comprises a housing 200 , a wind wheel 300 and an electric control box assembly 100 according to the first aspect of the present invention, and the wind wheel 300 and the electric control box assembly 100 are both arranged in the housing 200 .

[0037] Reference below Figure 2-Figure 6 An electric control box assembly 100 according to an embodiment of a first aspect of the present invention is described.

[0038] like Figure 2-Figure 5 As shown, the electric control box assembly 100 according to the first aspect of the embodiment of the present invention is used for an air conditioner outdoor unit 1000, and the electric control box assembly 100 includes: an electric control box 10, an electric control element 20 and a heating element 30, the electric control box 10 defines a first cavity 14 and a heat dissipation duct 13, the first cavity 14 is not connected to the heat dissipation duct 13, and the heat dissipation duct 13 has a heat dissipation inlet 131 and a heat dissipation outlet 132; the electric control element 20 is arranged in the first cavity 14, and the heating element 30 is arranged in the heat dissipation duct 13.

[0039] Specifically, a accommodating cavity is formed inside the electric control box 10, which can be used to accommodate the electric control element 20 and the heating element 30. The electric control box 10 can provide installation space and protection for the electric control element 20 and the heating element 30. At the same time, the electric control element 20 and the heating element 30 can also be integrated in the electric control box 10, thereby increasing the aesthetics and integration of the electric control box assembly 100.

[0040] Among them, the first cavity 14 is formed as a sealed space, and the electronic control component 20 is arranged in the first cavity 14, which can effectively prevent impurities such as dust and rainwater from entering the first cavity 14 and causing damage to the electronic control component 20; at the same time, when the air-conditioning outdoor unit 1000 has abnormal conditions such as refrigerant leakage, it can also effectively prevent the refrigerant from entering the first cavity 14 and causing the electronic control component 20 to ignite, and then effectively prevent the refrigerant leakage from causing the air-conditioning outdoor unit 1000 to burn, thereby improving the overall safety of the air-conditioning outdoor unit 1000.

[0041] The heat dissipation duct 13 can guide the airflow and limit the flow direction. The heat dissipation duct 13 has a heat dissipation inlet 131 and a heat dissipation outlet 132. The heating element 30 is arranged in the heat dissipation duct 13. When the air conditioner outdoor unit 1000 is running, the airflow can enter the heat dissipation channel from the heat dissipation inlet 131, and then exchange heat with the heating element 30 in the heat dissipation duct 13 to cool the heating element 30. The airflow after heat exchange is discharged along the heat dissipation outlet 132, so that the heating element 30 will not malfunction due to overheating during normal use, thereby improving the working safety of the heating element 30 and improving the safety and reliability of the electric control box assembly 100.

[0042] According to the electric control box assembly 100 of the embodiment of the present invention, by defining a non-connected first cavity 14 and a heat dissipation duct 13 in the electric control box 10, the safe use of the electric control element 20 can be ensured, and the occurrence of ignition events caused by refrigerant leakage of the electric control element 20 can be effectively avoided. At the same time, the heat dissipation effect of the heating element 30 can also be ensured, so that the heating element 30 will not malfunction due to overheating during normal use, thereby improving the safety of the use of the electric control box assembly 100, thereby improving the safety and reliability of the air-conditioning outdoor unit 1000.

[0043] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the electric control box 10 comprises: a box body 11 and a box cover 12, one side of the box body 11 is open, the box cover 12 is set on the open side of the box body 11, the heating element 30 and the electric control element 20 are both set on the side of the box cover 12 facing the box body 11, and the heat dissipation inlet 131 and the heat dissipation outlet 132 are both formed on the box body 11. Among them, the box body 11 has a receiving cavity, which can accommodate the electric control and the internal heating element 30 and the electric control element 20, and the box cover 12 is set on the open side of the box body 11 to prevent dust and other impurities from entering, thereby improving the safety of the electric control box assembly 100.

[0044] For example Figure 1 As shown, when the electric control box assembly 100 is arranged on the air-conditioning outdoor unit 1000, the box cover 12 is arranged above the box body 11, that is, the heating element 30 and the electric control element 20 are placed upside down, which can be beneficial to protect the heating element 30 and the electric control element 20, and can effectively avoid damage to the heating element 30 and the electric control element 20 caused by accumulation of impurities such as water or dust, thereby further improving the safety of the electric control box assembly 100.

[0045] According to some embodiments of the present invention, Figure 5As shown, the electric control box assembly 100 further includes a cover plate 40, which is connected to the box cover 12 and covers the outside of the heating element 30, and the cover plate 40 cooperates with the box body 11 to define a heat dissipation duct 13. The cover plate 40 cooperates with the box body 11 to isolate the first cavity 14 and the heat dissipation duct 13, thereby ensuring the sealing of the first cavity 14, effectively preventing the refrigerant or other impurities from entering the first cavity 14 through the heat dissipation duct 13 and causing damage to the electric control element 20, thereby further improving the safety of the electric control element 20 and improving the safety and reliability of the whole machine; at the same time, the cover plate 40 can also isolate the heating element 30 and the electric control element 20, effectively preventing the heating element 30 from overheating and causing damage to the electric control element 20, thereby improving the safety of the electric control box assembly 100.

[0046] According to some embodiments of the present invention, Figure 5 As shown, the cover plate 40 includes an annular portion and a baffle portion, the annular portion is connected to the box cover 12 and extends in a ring shape along the circumference of the heating element 30, and the baffle portion is connected to the side of the annular portion away from the box cover 12 and extends along the circumference of the annular portion; the box body 11 is provided with a surrounding plate 111, the surrounding plate 111 extends along the circumference of the annular portion, and the periphery of the surrounding plate 111 is sealed and connected to the periphery of the cover plate 40 to define a heat dissipation duct 13.

[0047] Among them, the peripheral sealing connection between the enclosure 111 and the cover plate 40 can define the heat dissipation duct 13 and completely isolate the heat dissipation duct 13 from the first cavity 14; at the same time, the peripheral sealing connection between the enclosure 111 and the cover plate 40 can further define the airflow direction of the heat dissipation duct 13, thereby ensuring that the airflow flows along the circumferential direction of the heating element 30, and preventing the airflow from flowing out in directions other than the heat dissipation outlet 132. In this way, it can also avoid reducing the airflow passing through the heating element 30 and reducing the cooling effect, thereby further ensuring the cooling effect of the heating element 30 and ensuring that the heating element 30 will not fail due to overheating during normal use, thereby improving the safety and reliability of the electric control box assembly 100.

[0048] According to some embodiments of the present invention, Figure 6 As shown, the enclosure 111 includes a side plate portion 1111 and a top plate portion 1112. The side plate portion 1111 extends along the circumference of the annular portion and docks with the baffle portion in the circumference of the annular portion. The top plate portion 1112 is connected to one end of the side plate portion 1111 away from the box cover 12 and is sealed to the baffle portion.

[0049] Among them, the enclosure 111 is connected to the cover plate 40, so that the heat dissipation duct 13 is formed with only two vents, namely the heat dissipation inlet 131 and the heat dissipation outlet 132. In this way, the airflow can only move along the heat dissipation inlet 131 to the heat dissipation outlet 132, and then the heating element 30 can be dissipated in a targeted manner, thereby further increasing the cooling effect of the heating element 30, ensuring that the heating element 30 will not fail due to overheating during normal use, and improving the safety and reliability of the electric control box assembly 100.

[0050] For example Figure 4 As shown, the top plate portion 1112 is formed with a first plate portion and a second plate portion, the first plate portion extends in a horizontal direction, one end of the second plate portion is connected to one end of the first plate portion, and the other end extends toward the heating element 30, forming a certain angle with the first plate portion, so that the top plate portion 1112 can be arranged along the circumference of the heating element 30, and then, the movement range of the airflow can be limited, and the cooling area of ​​the airflow on the heating element 30 can be increased, thereby further improving the cooling effect of the airflow on the heating element 30.

[0051] According to some embodiments of the present invention, Figure 5 As shown, the electric control box assembly 100 further includes an electric control board 50, which is arranged on the side of the box cover 12 facing the box body 11, and the electric control element 20 and the heating element 30 are both arranged on the electric control board 50. Among them, the electric control board 50 is an important component of the electric control box assembly 100, and the electric control board 50 is composed of many unit circuits. Various input signals are processed by the electric control board 50 and control the air conditioner outdoor unit through the output circuit. The electric control board 50 is the control center of the electric control system; at the same time, the electric control board 50 is also equipped with electrical components for controlling the air conditioner outdoor unit 1000, so as to realize the operation of the air conditioner equipment such as the compressor, the fan, and the electric belt.

[0052] According to some embodiments of the present invention, Figure 5 As shown, the electric control box assembly 100 further includes: a heat sink 60, which is disposed outside the first cavity 14 and the heat dissipation duct 13, and is connected to the electric control board 50, and is used to dissipate heat for the electric control board 50. The heat sink 60 has a heat conduction function, and the heat generated by the electric control board 50 can be transferred to the heat sink 60, and then dissipated to the air through the heat sink 60, thereby completing the heat dissipation of the electric control board 50, thereby improving the safety of the use of the electric control board 50. The heat sink 60 can include multiple types, for example, it can be a heat sink.

[0053] According to some embodiments of the present invention, Figure 6As shown, the heat dissipation inlet 131 is arranged toward the heat dissipation element 60 and communicates with the heat dissipation element 60, and the heat dissipation outlet 132 is arranged away from the heat dissipation element 60. Specifically, the heat dissipation inlet 131 and the heat dissipation element 60 are located on the side of the electric control box 10 facing the wind wheel 200, so that the airflow driven by the wind wheel 200 can not only exchange heat with the heating element 30, but also with the heat dissipation element 60, thereby achieving overall cooling of the electric control box assembly 100, and further improving the safety of the electric control box assembly 100.

[0054] For example Figure 6 As shown, the heat dissipation inlet 131 and the heat dissipation outlet 132 are arranged relative to each other, which can be beneficial to the circulation of airflow and increase the smoothness of airflow, thereby improving the heat dissipation effect of the heating element 30, thereby increasing the safety and reliability of the heating element 30 during use.

[0055] According to some embodiments of the present invention, Figure 5 As shown, the heating element 30 includes a base 31 and a heating body 32 disposed on the base 31, and the base 31 is fixedly connected to the electric control board 50. The base 31 can be used to install the heating body 32, and can also isolate the electric control board 50 and the heating body 32, which can effectively prevent the heating body 32 from overheating and causing damage to the electric control board 50, thereby improving the safety of the electric control box assembly 100.

[0056] Optionally, the base 31 and the cover plate 40 are fixedly connected by snap fasteners, wherein a plurality of protrusions are formed on the base 31, and a groove matching the protrusions is formed on the side of the cover plate 40 facing the box cover 12, and the grooves correspond to the protrusions one by one. In this way, the convenience of installing and disassembling the base 31 and the cover plate 40 can be improved, and thus the convenience of installing, disassembling and repairing the electric control box assembly 100 can be improved.

[0057] According to some embodiments of the present invention, the box body 11 and the box cover 12 are connected by snap-fitting and / or by fasteners. That is, the box body 11 and the box cover 12 can be connected only by snap-fitting, so that the convenience of connecting and disassembling the box body 11 and the box cover 12 can be improved; they can also be connected only by fasteners, so that the tightness of the connection between the box body 11 and the box cover 12 can be increased, and then the sealing of the electric control box assembly 100 can be improved; in addition, they can also be connected by both snap-fitting and fasteners, so that the sealing of the electric control box 100 can be improved, and the convenience of installing and disassembling the electric control box 100 can also be increased.

[0058] Among them, the snap-on connection may include multiple types, for example, it may be a snap-on connection; the fastener connection also includes multiple types, for example, the fastener may be a bolt or a screw.

[0059] For example Figure 4As shown, a mating groove is also formed on the box cover 12, and an extension portion extending toward the box cover 12 is formed on the periphery of the box body 11, and the extension portion is matingly connected with the mating groove. When the electric control box assembly 100 is used for the air-conditioning outdoor unit 1000, the box cover 12 is arranged above the box body 11. In this way, the box cover 12 and the box body 11 are connected through the mating groove, which can effectively prevent impurities such as rainwater from entering the box body 11 along the connection between the box cover 12 and the box body 11 and causing damage to the electric control element 20, thereby improving the safety of the electric control box assembly 100.

[0060] According to some embodiments of the present invention, the heating element 30 is a PFC (Power Factor Correction) inductor, wherein the PFC inductor can improve the power factor in the circuit, reduce the reactive power in the circuit, and thus improve the power conversion effect.

[0061] Furthermore, the PFC inductor is an enameled wire, which will not cause sparks when exposed, thereby further improving the safety of the electric control box assembly 100, thereby improving the safety and reliability of the entire machine.

[0062] The air conditioner outdoor unit 1000 according to the second embodiment of the present invention comprises a housing 200 , a wind wheel 300 and an electric control box assembly 100 according to the first embodiment of the present invention, wherein the wind wheel 300 and the electric control box assembly 100 are both arranged in the housing 200 .

[0063] Among them, the shell 200 provides installation space for the wind wheel 300 and the electric control box 10; the wind wheel 300 is suitable for driving the air flow in the heat dissipation duct 13 to flow from the heat dissipation inlet 131 to the heat dissipation outlet 132, thereby achieving cooling of the heating element 30 of the electric control box assembly 100.

[0064] For example Figure 1 As shown, the electric control box assembly 100 is arranged obliquely above the wind wheel 300 assembly, the heat dissipation inlet 131 is arranged toward the wind wheel 300, and the heat dissipation outlet 132 is arranged away from the wind wheel 300. At this time, the rotation of the wind wheel 300 can drive the circumferential airflow to rotate along the circumference of the wind wheel 300, and then drive the airflow to enter from the heat dissipation inlet 131. At the same time, the heat dissipation outlet 132 is arranged away from the wind wheel 300, and no airflow is generated at the heat dissipation outlet 132, and then no resistance is generated at the heat dissipation outlet 132, which can be conducive to the smooth discharge of the airflow, and then the heat dissipation effect of the heating element 30 can be improved.

[0065] According to the air-conditioning outdoor unit 1000 of the embodiment of the present invention, the overall performance of the air-conditioning outdoor unit 1000 is improved by disposing the electric control box assembly 100 of the first embodiment.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric control box assembly, used for an air conditioner outdoor unit, characterized in that: include: An electric control box, the electric control box defines a first cavity and a heat dissipation air duct, the first cavity is not connected to the heat dissipation air duct, and the heat dissipation air duct has a heat dissipation inlet and a heat dissipation outlet; An electric control element and a heating element, wherein the electric control element is arranged in the first cavity, and the heating element is arranged in the heat dissipation duct.

2. The electric control box assembly according to claim 1, characterized in that: The electric control box includes: a box body and a box cover, one side of the box body is open, the box cover is arranged on the open side of the box body, the heating element and the electric control element are both arranged on the side of the box cover facing the box body, and the heat dissipation inlet and the heat dissipation outlet are both formed on the box body.

3. The electric control box assembly according to claim 2, characterized in that: The electric control box assembly also includes a cover plate, which is connected to the box cover and covers the outside of the heating element. The cover plate cooperates with the box body to define the heat dissipation duct.

4. The electric control box assembly according to claim 3, characterized in that: The cover plate includes an annular portion and a baffle portion, wherein the annular portion is connected to the box cover and extends in an annular shape along the circumference of the heating element, and the baffle portion is connected to a side of the annular portion away from the box cover and extends along the circumference of the annular portion; The box body is provided with a surrounding plate, which extends along the circumference of the annular portion, and the circumference of the surrounding plate is sealed and connected to the circumference of the cover plate to define the heat dissipation duct.

5. The electric control box assembly according to claim 4, characterized in that: The enclosure includes a side plate portion and a top plate portion, wherein the side plate portion extends along the circumference of the annular portion and docks with the baffle portion in the circumference of the annular portion, and the top plate portion is connected to an end of the side plate portion away from the box cover and is sealed to the baffle portion.

6. The electric control box assembly according to claim 2, characterized in that: It also includes an electric control board, which is arranged on the side of the box cover facing the box body, and the electric control element and the heating element are both arranged on the electric control board.

7. The electric control box assembly according to claim 6, characterized in that: Also includes: A heat sink is disposed outside the first cavity and the heat dissipation duct, and is connected to the electric control board to dissipate heat for the electric control board.

8. The electric control box assembly according to claim 7, characterized in that: The heat dissipation inlet is arranged toward the heat dissipation element and communicates with the heat dissipation element, and the heat dissipation outlet is arranged away from the heat dissipation element.

9. The electric control box assembly according to claim 6, characterized in that: The heating element comprises a base and a heating body arranged on the base, and the base is fixedly connected to the electric control board.

10. The electric control box assembly according to claim 2, characterized in that: The box body is connected to the box cover by snap-fitting and / or by fasteners.

11. The electric control box assembly according to claim 1, characterized in that: The heating element is a PFC inductor.

12. An air conditioner outdoor unit, characterized in that: It comprises a shell, a wind wheel and an electric control box assembly according to any one of claims 1 to 11, wherein the wind wheel and the electric control box assembly are both arranged in the shell.

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