Electric control box assembly and air conditioner outdoor unit having same

Abstract

Provided are an electric control box assembly (100) and an air conditioner outdoor unit (1000) having same. The electric control box assembly (100) comprises: an electric control box (10), the electric control box (10) defining a first cavity (14) and a heat dissipation air duct (13), the first cavity (14) being not communicated with the heat dissipation air duct (13), and the heat dissipation air duct (13) having a heat dissipation inlet (131) and a heat dissipation outlet (132); and an electric control element (20) and a heating element (30), the electric control element (20) being arranged in the first cavity (14), and the heating element (30) being arranged in the heat dissipation air duct (13).

Description

Electric control box assembly and air conditioner outdoor unit having the same

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on two Chinese patent applications with application numbers 2023111144246 and 2023223584384, both with application date of August 30, 2023, and claims the priority of these two Chinese patent applications. The entire contents of these two Chinese patent applications are hereby incorporated into this application by reference. Technical Field

[0003] The present application relates to the technical field of air conditioning, and in particular to an electric control box assembly and an air conditioning outdoor unit having the same. Background Art

[0004] The electronic control module in the air conditioner's outdoor unit generates heat during operation. To cool the unit, these units typically require an air duct connected to the outside air to dissipate heat from the components within the module, thus facilitating cooling. However, if the air conditioner's outdoor unit experiences a refrigerant leak, the refrigerant can enter the control box through the duct, potentially damaging the components within.

[0005] Application Contents

[0006] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent.

[0007] In view of this, the present application needs to provide an electronic control box assembly, which can ensure the safe use of electronic control components and effectively avoid the occurrence of ignition incidents caused by refrigerant leakage of electronic control components. At the same time, it can also ensure the heat dissipation effect of the heating components, so that the heating components will not malfunction due to overheating during normal use, thereby improving the safety of the use of the electronic control box assembly, thereby improving the safety and reliability of the air-conditioning outdoor unit.

[0008] According to the first aspect of the present application, the electronic control box assembly is used for an air-conditioning outdoor unit, and the electronic control box assembly includes: an electronic control box, which 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 electronic control element and a heating element, the electronic control element is arranged in the first cavity, and the heating element is arranged in the heat dissipation duct.

[0009] According to the electronic control box assembly of the present application, by defining a non-connected first cavity and a heat dissipation duct in the electronic control box, the safe use of the electronic control components can be ensured, and the occurrence of ignition incidents caused by refrigerant leakage of the electronic control components can be effectively avoided. At the same time, the heat dissipation effect of the heating components can be ensured, so that the heating components will not malfunction due to overheating during normal use, thereby improving the safety of the use of the electronic control box assembly and thus improving the safety and reliability of the air-conditioning outdoor unit.

[0010] According to an example of the present application, 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.

[0011] According to an example of the present application, 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.

[0012] According to an example of the present application, 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 periphery of the surrounding plate is sealed with the periphery of the cover plate to define the heat dissipation duct.

[0013] According to an example of the present application, the enclosure includes a side plate portion and a top plate portion, 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 one end of the side plate portion away from the box cover and is sealed with the baffle portion.

[0014] According to an example of the present application, the electric control box assembly further includes an electric control board, which is arranged on a 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.

[0015] According to an example of the present application, the electric control box assembly further includes: a heat sink, which is arranged on the outside of the first cavity and the heat dissipation duct, and is connected to the electric control board for dissipating heat for the electric control board.

[0016] According to an example of the present application, 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.

[0017] According to an example of the present application, the heating element includes a base and a heating body provided on the base, and the base is fixedly connected to the electric control board.

[0018] According to an example of the present application, the box body is connected to the box cover by snap-fitting and / or by fasteners.

[0019] According to an example of the present application, the heating element is a PFC inductor.

[0020] According to the second aspect of the present application, an air-conditioning outdoor unit is provided, comprising a housing, a wind wheel and an electric control box assembly according to the first aspect of the present application, wherein the wind wheel and the electric control box assembly are both arranged in the housing.

[0021] According to the air-conditioning outdoor unit of the present application, the overall performance of the air-conditioning outdoor unit is improved by providing the electric control box assembly of the first aspect.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0024] FIG2 is a schematic diagram of an electric control box assembly according to an embodiment of the present application;

[0025] FIG3 is a schematic diagram of the electric control box assembly according to an embodiment of the present application from another angle;

[0026] FIG4 is a cross-sectional view taken along line AA shown in FIG3 ;

[0027] FIG5 is a partial schematic diagram of an electric control box assembly according to an embodiment of the present application;

[0028] FIG6 is a cross-sectional view of the electric control box assembly according to an embodiment of the present application from another angle.

[0029] Figure 1: Air conditioner outdoor unit 1000; Electric control box assembly 100; Electric control box 10; Box body 11; 111, enclosure 111; Side panel 1111; Top panel 1112; Box cover 12; Heat dissipation duct 13; Heat dissipation inlet 131; Heat dissipation outlet 132; First cavity 14; Electric control element 20; Heating element 30; Base 31; Heating body 32; Cover plate 40; Electric control board 50; Heat sink 60; Housing 200; Wind wheel 300. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present application, 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 application, and should not be construed as limiting the present application.

[0031] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0032] First, an air-conditioning outdoor unit 1000 according to an embodiment of the second aspect of the present application is briefly described with reference to FIG1 . The air-conditioning outdoor unit 1000 includes an electric control box assembly 100 according to an embodiment of the first aspect of the present application.

[0033] As shown in Figure 1, the air-conditioning outdoor unit 1000 according to the second aspect of the present application includes a shell 200, a wind wheel 300 and an electric control box assembly 100 according to the first aspect of the present application, and the wind wheel 300 and the electric control box assembly 100 are both arranged in the shell 200.

[0034] The electric control box assembly 100 according to the first embodiment of the present application will be described below with reference to FIG. 2 to FIG. 6 .

[0035] As shown in Figures 2 to 5, the electric control box assembly 100 according to the embodiment of the first aspect of the present application is used for an air-conditioning outdoor unit 1000. 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. 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.

[0036] 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 be integrated in the electric control box 10, thereby increasing the aesthetics and integration of the electric control box assembly 100.

[0037] 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 thus 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.

[0038] The heat dissipation duct 13 can guide and control the flow of air. The heat dissipation duct 13 has a heat dissipation inlet 131 and a heat dissipation outlet 132. The heating element 30 is disposed within the heat dissipation duct 13. When the air conditioner outdoor unit 1000 is in operation, air can enter the heat dissipation duct from the heat dissipation inlet 131, then exchange heat with the heating element 30 within the heat dissipation duct 13, cooling the heating element 30. The airflow after heat exchange is discharged through the heat dissipation outlet 132, preventing the heating element 30 from malfunctioning due to overheating during normal use. This improves the operating safety of the heating element 30 and the safety and reliability of the electrical control box assembly 100.

[0039] According to the electric control box assembly 100 of the embodiment of the present application, 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 incidents 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.

[0040] According to some embodiments of the present application, as shown in FIG2 and FIG4 , the electric control box 10 includes: a box body 11 and a box cover 12. One side of the box body 11 is open, and the box cover 12 is arranged to cover the open side of the box body 11. The heating element 30 and the electric control element 20 are both arranged on the side of the box cover 12 facing the box body 11. The heat dissipation inlet 131 and the heat dissipation outlet 132 are both formed on the box body 11. 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. The box cover 12 is arranged to cover 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.

[0041] For example, as shown in Figure 1, when the electric control box assembly 100 is set on the air-conditioning outdoor unit 1000, the box cover 12 is set above the box body 11, that is, the heating element 30 and the electric control element 20 are placed upside down. In this way, it is 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.

[0042] According to some embodiments of the present application, as shown in FIG5 , 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. 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 from the heat dissipation duct 13, thereby ensuring the sealing of the first cavity 14 and effectively preventing 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 enhancing the safety and reliability of the entire device. At the same time, the cover plate 40 can also isolate the heating element 30 from 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.

[0043] According to some embodiments of the present application, as shown in Figure 5, 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 with the periphery of the cover plate 40 to define a heat dissipation duct 13.

[0044] Among them, the peripheral sealing connection between the enclosure 111 and the cover plate 40 can define the heat dissipation duct 13 while completely isolating 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 the reduction of the airflow passing through the heating element 30 and the reduction of 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 electrical control box assembly 100.

[0045] According to some embodiments of the present application, as shown in Figure 6, 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, and the top plate portion 1112 is connected to the end of the side plate portion 1111 away from the box cover 12 and is sealed with the baffle portion.

[0046] 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 in the direction from 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 malfunction due to overheating during normal use, and improving the safety and reliability of the electrical control box assembly 100.

[0047] For example, as shown in Figure 4, 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. In this way, 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.

[0048] According to some embodiments of the present application, as shown in FIG5 , the electric control box assembly 100 further includes an electric control board 50, which is disposed on the side of the box cover 12 facing the box body 11. The electric control element 20 and the heating element 30 are both disposed on the electric control board 50. The electric control board 50 is an important component of the electric control box assembly 100. The electric control board 50 is composed of many unit circuits. Various input signals are processed by the electric control board 50 and then controlled through output circuits to control the air conditioner outdoor unit. The electric control board 50 is the control center of the electric control system. Furthermore, the electric control board 50 is also equipped with electrical components for controlling the air conditioner outdoor unit 1000, thereby controlling the operation of air conditioning equipment such as the compressor, fan, and electric heating belt.

[0049] According to some embodiments of the present application, as shown in FIG5 , the electric control box assembly 100 further includes a heat sink 60 disposed outside the first cavity 14 and the heat dissipation duct 13 . The heat sink 60 is connected to the electric control board 50 and is used to dissipate heat from the electric control board 50. The heat sink 60 has a heat conduction function, allowing heat generated by the electric control board 50 to be transferred to the heat sink 60 and then dissipated into the air through the heat sink 60 , thereby dissipating heat from the electric control board 50 and improving the safety of the electric control board 50. The heat sink 60 can include various types, for example, a heat sink.

[0050] According to some embodiments of the present application, as shown in FIG6 , the heat dissipation inlet 131 is disposed toward and communicates with the heat dissipation element 60, and the heat dissipation outlet 132 is disposed 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. In this way, 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.

[0051] For example, as shown in FIG6 , the heat dissipation inlet 131 and the heat dissipation outlet 132 are arranged relative to each other, which can facilitate the circulation of airflow, increase the smoothness of airflow, and further improve the heat dissipation effect of the heating element 30 , thereby increasing the safety and reliability of the heating element 30 during use.

[0052] According to some embodiments of the present application, as shown in FIG5 , the heating element 30 includes a base 31 and a heating element 32 disposed on the base 31. The base 31 is fixedly connected to the electric control board 50. The base 31 can be used to mount the heating element 32 and can also isolate the electric control board 50 from the heating element 32, effectively preventing the heating element 32 from overheating and causing damage to the electric control board 50, thereby improving the safety of the electric control box assembly 100.

[0053] 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 cooperating with the protrusions is formed on the side of the cover plate 40 facing the box cover 12, and the grooves correspond one-to-one to the protrusions. In this way, the convenience of installing and disassembling the base 31 and the cover plate 40 can be improved, thereby improving the convenience of installing, disassembling and repairing the electric control box assembly 100.

[0054] According to some embodiments of the present application, the box body 11 and the box cover 12 are connected by snap-fitting and / or by fasteners. In other words, the box body 11 and the box cover 12 can be connected only by snap-fitting, which can improve the convenience of connecting and removing the box body 11 and the box cover 12; or they can be connected only by fasteners, which can increase the tightness of the connection between the box body 11 and the box cover 12, thereby improving the sealing of the electric control box assembly 100; in addition, they can be connected by both snap-fitting and fasteners, which can improve the sealing of the electric control box 100 while also increasing the convenience of installing and removing the electric control box 100.

[0055] Among them, the snap connection may include multiple types, for example, it may be a snap connection; the fastener connection also includes multiple types, for example, the fastener may be a bolt or a screw.

[0056] For example, as shown in Figure 4, a matching 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 matched with the matching 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 matching 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 electronic control element 20, thereby improving the safety of the electric control box assembly 100.

[0057] According to some embodiments of the present application, the heating element 30 is a PFC (Power Factor Correction) inductor. 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.

[0058] 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 and thus improving the safety and reliability of the entire machine.

[0059] The air-conditioning outdoor unit 1000 according to the second embodiment of the present application includes a housing 200, a wind wheel 300 and an electrical control box assembly 100 according to the first embodiment of the present application. The wind wheel 300 and the electrical control box assembly 100 are both arranged in the housing 200.

[0060] Among them, the shell 200 provides installation space for the wind wheel 300 and the electronic 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 electronic control box assembly 100.

[0061] For example, as shown in Figure 1, 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 facilitate the smooth discharge of the airflow, and thus improve the heat dissipation effect of the heating element 30.

[0062] According to the air-conditioning outdoor unit 1000 of the embodiment of the present application, the overall performance of the air-conditioning outdoor unit 1000 is improved by providing the electric control box assembly 100 of the embodiment of the first aspect described above.

[0063] In the description of this application, it should be understood that the terms "center", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0065] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0066] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0068] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electric control box assembly, used for an air conditioner outdoor unit, comprising: 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, comprising: 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, further comprising a cover plate, wherein the cover plate is connected to the box cover and covers the outer side of the heating element, and the cover plate cooperates with the box body to define the heat dissipation duct.

4. The electric control box assembly according to claim 3, wherein the cover plate comprises 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. 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, wherein 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 any one of claims 2 to 5, further comprising an electric control board, wherein the electric control board is arranged on a 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, further comprising: A heat sink is disposed outside the first cavity and the heat dissipation duct, and the heat sink 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 , wherein 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 any one of claims 6 to 8, wherein 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 any one of claims 2 to 9, wherein the box body is connected to the box cover by snap-fitting and / or by fasteners.

11. The electric control box assembly according to any one of claims 1 to 10, wherein the heating element is a PFC inductor.

12. An air conditioner outdoor unit, comprising a housing, 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 housing.

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