Electric control box assembly and air conditioner outdoor unit with same

Abstract

The application discloses an electric control box assembly and an air conditioner outdoor unit with the same. The electric control box assembly comprises an electric control box, the electric control box defines a first cavity and a heat dissipation air duct, the first cavity is not communicated with the heat dissipation air duct, the heat dissipation air 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 air duct. According to the electric control box assembly, the first cavity and the heat dissipation air duct which are not communicated are defined in the electric control box, the use safety of the electric control element can be ensured, the occurrence of the electric control element ignition caused by the refrigerant leakage can be effectively avoided, meanwhile, the heat dissipation effect of the heating element can be ensured, the heating element will not be overheated and fail in the normal use process, and then the use safety of the electric control box assembly can be improved, so that the safety and reliability of the air conditioner outdoor unit can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an electric control box assembly and an air conditioner outdoor unit with the same. BACKGROUND

[0002] The electric control module in the electric control box of the air conditioner outdoor unit generates heat during operation. In order to reduce the temperature, a general electric control box needs to be provided with an air duct connected with the outside space to ensure the heat dissipation of the components in the electric control module and facilitate the temperature reduction. However, when the air conditioner outdoor unit has a refrigerant leakage or other faults, the refrigerant will also enter the electric control box through the air duct, causing damage to the electrical components in the electric control box. SUMMARY

[0003] The present application aims to solve at least one of the problems in the prior art. To this end, the present application provides an electric control box assembly which can ensure the safe use of electric control components, effectively avoid the occurrence of sparking events caused by refrigerant leakage of the electric control components, and 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 safe use of the electric control box assembly and the safety and reliability of the air conditioner outdoor unit.

[0004] The present application also provides an air conditioner outdoor unit with the above electric control box assembly.

[0005] The electric control box assembly according to the first aspect of the present application is used in an air conditioner outdoor unit, and includes an electric control box, the electric control box defining a first cavity and a heat dissipation air duct, the first cavity being not communicated with the heat dissipation air duct, the heat dissipation air duct having a heat dissipation inlet and a heat dissipation outlet; an electric control component and a heating component, the electric control component being arranged in the first cavity, and the heating component being arranged in the heat dissipation air duct.

[0006] The electric control box assembly according to the present application can ensure the safe use of electric control components, effectively avoid the occurrence of sparking events caused by refrigerant leakage of the electric control components, and 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 safe use of the electric control box assembly and the safety and reliability of the air conditioner outdoor unit.

[0007] According to some embodiments 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 component and the electric control component 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 application, the electric control box assembly further comprises a cover plate connected to the box cover and covering the outside of the heat generating element, the cover plate and the box body cooperatively define the heat dissipation air duct.

[0009] According to some embodiments of the present application, the cover plate comprises a ring-shaped portion connected to the box cover and extending in a ring shape along the circumference of the heat generating element, and a baffle portion connected to the side of the ring-shaped portion away from the box cover and extending along the circumference of the ring-shaped portion; the box body is provided with a surrounding plate extending along the circumference of the ring-shaped portion, and the surrounding plate is sealingly connected to the cover plate to define the heat dissipation air duct.

[0010] According to some embodiments of the present application, the surrounding plate comprises a side plate portion extending along the circumference of the ring-shaped portion and abutting the baffle portion in the circumferential direction of the ring-shaped portion, and a top plate portion connected to the end of the side plate portion away from the box cover and sealingly connected to the baffle portion.

[0011] According to some embodiments of the present application, the electric control box assembly further comprises an electric control board arranged on the side of the box cover facing the box body, and the electric control element and the heat generating element are arranged on the electric control board.

[0012] According to some embodiments of the present application, the electric control box assembly further comprises a heat dissipation member arranged outside the first cavity and the heat dissipation air duct, the heat dissipation member being connected to the electric control board for dissipating heat from the electric control board.

[0013] According to some embodiments of the present application, the heat dissipation inlet is arranged towards the heat dissipation member and communicates with the heat dissipation member, and the heat dissipation outlet is arranged away from the heat dissipation member.

[0014] According to some embodiments of the present application, the heat generating element comprises a base and a heat generating body arranged on the base, and the base is fixedly connected to the electric control board.

[0015] According to some embodiments of the present application, the box body and the box cover are connected by a clamping connection and / or fasteners.

[0016] According to some embodiments of the present application, the heat generating element is a PFC inductor.

[0017] The air conditioner outdoor unit according to the second aspect of the present application comprises a shell, a fan wheel, and the electric control box assembly according to the first aspect of the present application, and the fan wheel and the electric control box assembly are arranged in the shell.

[0018] The air conditioner outdoor unit according to the present application improves the overall performance of the air conditioner outdoor unit by arranging the electric control box assembly according to the first aspect.

[0019] Additional aspects and advantages of the present application will be partially given in the following description, partially will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

[0023] Figure 4 is a sectional view along the line A-A shown in Figure 3

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

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

[0026] REFERENCE NUMERALS:

[0027] 1000, air conditioner outdoor unit;

[0028] 100, electric control box assembly;

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

[0030] 20, electric control element;

[0031] 30, heat generating element; 31, base; 32, heat generating main body;

[0032] 40, cover plate; 50, electric control board; 60, heat dissipation member;

[0033] 200, housing; 300, fan wheel. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example embodiments in which the same or similar elements or elements having the same or similar functions are denoted by the same reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.​

[0035] First, with reference to Figure 1 The air conditioner outdoor unit 1000 according to the embodiment of the second aspect of the present application is briefly described, which comprises the electric control box assembly 100 according to the embodiment of the first aspect of the present application.

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

[0037] The electric control box assembly 100 according to the embodiment of the first aspect of the present application is described below with reference to Figures 2-6

[0038] As Figures 2-5 shown, the electric control box assembly 100 according to the embodiment of the first aspect of the present application is used in the air conditioner outdoor unit 1000, and the electric control box assembly 100 comprises 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 air duct 13, the first cavity 14 is not communicated with the heat dissipation air duct 13, and the heat dissipation air 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 air duct 13.

[0039] Specifically, the electric control box 10 has an accommodating cavity formed inside, which can be used to accommodate the electric control element 20 and the heating element 30, and the electric control box 10 can provide mounting space and protection for the electric control element 20 and the heating element 30, and 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 aesthetic appearance and integration of the electric control box assembly 100.

[0040] Among them, the first cavity 14 is formed as a sealed space, and the electric control element 20 is arranged in the first cavity 14, which can effectively avoid impurities such as dust and rainwater from entering the first cavity 14 and causing damage to the electric control element 20; at the same time, when the air conditioner outdoor unit 1000 has an abnormal situation such as refrigerant leakage, the refrigerant can also be effectively prevented from entering the first cavity 14 to cause the electric control element 20 to be ignited, thereby effectively avoiding the situation that the refrigerant leakage causes the air conditioner outdoor unit 1000 to burn, so as to improve the overall safety of the air conditioner outdoor unit 1000.

[0041] ​The heat dissipation air duct 13 can guide and limit the flow direction of the air flow. The heat dissipation air duct 13 has a heat dissipation inlet 131 and a heat dissipation outlet 132, and the heating element 30 is arranged in the heat dissipation air duct 13. When the air conditioner outdoor unit 1000 is running, the air flow can enter the heat dissipation passage from the heat dissipation inlet 131, and then exchange heat with the heating element 30 in the heat dissipation air duct 13 to cool the heating element 30. The air flow after heat exchange is discharged along the heat dissipation outlet 132, so that the heating element 30 will not fail 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 application, by defining the first cavity 14 and the heat dissipation air duct 13 which are not communicated in the electric control box 10, the use safety of the electric control element 20 can be ensured, the occurrence of the sparking event caused by the refrigerant leakage of the electric control element 20 can be effectively avoided, and the heat dissipation effect of the heating element 30 can be ensured, so that the heating element 30 will not fail due to overheating during normal use, thereby improving the use safety of the electric control box assembly 100, and improving the safety and reliability of the air conditioner outdoor unit 1000.

[0043] According to some embodiments of the present application, as shown in Figure 2 and Figure 4 The electric control box 10 comprises a box body 11 and a box cover 12. The box body 11 is open on one side, and the box cover 12 is arranged on the open side of the box body 11. The heating element 30 and the electric control element 20 are arranged 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 formed on the box body 11. The box body 11 has a receiving cavity which can accommodate the heating element 30 and the electric control element 20 inside the electric control box. The box cover 12 is arranged on the open side of the box body 11, which can prevent dust and other impurities from entering, thereby improving the safety of the electric control box assembly 100.

[0044] For example, as shown in Figure 1 When the electric control box assembly 100 is arranged on the air conditioner 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. In this way, the heating element 30 and the electric control element 20 can be protected, and damage to the heating element 30 and the electric control element 20 caused by the accumulation of water or dust and other impurities can be effectively avoided, thereby further improving the use safety of the electric control box assembly 100.

[0045] According to some embodiments of the present application, as shown in Figure 5As shown, the electric control box assembly 100 further comprises a cover plate 40 connected with the box cover 12 and covering the outer side of the heating element 30, and the cover plate 40 cooperates with the box body 11 to define the heat dissipation air duct 13. The cover plate 40 cooperates with the box body 11 to isolate the first cavity 14 and the heat dissipation air 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 air duct 13 to damage the electric control element 20, thereby further improving the safety of the electric control element 20 and 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 overheating of the heating element 30 from damaging the electric control element 20, thereby improving the safety of the electric control box assembly 100.

[0046] According to some embodiments of the present application, as shown in Figure 5 As shown, the cover plate 40 comprises a ring-shaped portion and a baffle portion, the ring-shaped portion is connected with 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 ring-shaped portion away from the box cover 12 and extends along the circumference of the ring-shaped portion; the box body 11 is provided with a surrounding plate 111 extending along the circumference of the ring-shaped portion, and the circumferential edge of the surrounding plate 111 is sealingly connected with the circumferential edge of the cover plate 40 to define the heat dissipation air duct 13.

[0047] The sealing connection of the surrounding plate 111 and the circumferential edge of the cover plate 40 can not only define the heat dissipation air duct 13, but also completely isolate the heat dissipation air duct 13 from the first cavity 14. At the same time, the sealing connection of the surrounding plate 111 and the circumferential edge of the cover plate 40 can further define the airflow direction of the heat dissipation air duct 13, thereby ensuring the airflow to flow along the circumference of the heating element 30 and preventing the airflow from flowing out in directions other than the heat dissipation outlet 132. This can also avoid the reduction of airflow passing through the heating element 30 and the decline of cooling effect, thereby further ensuring the cooling effect of the heating element 30 and preventing the heating element 30 from failing 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 application, as shown in Figure 6 As shown, the surrounding plate 111 comprises a side plate portion 1111 extending along the circumference of the ring-shaped portion and abutting the baffle portion in the circumferential direction of the ring-shaped portion, and a top plate portion 1112 connected to the end of the side plate portion 1111 away from the box cover 12 and sealingly connected with the baffle portion.

[0049] The surrounding plate 111 is connected with the cover plate 40, so that the heat dissipation air duct 13 only has two air vents, i.e., the heat dissipation inlet 131 and the heat dissipation outlet 132. In this way, the airflow only moves in the direction from the heat dissipation inlet 131 to the heat dissipation outlet 132, thereby targeted heat dissipation can be performed on the heating element 30, so that the cooling effect of the heating element 30 can be further increased, and the safety and reliability of the electric control box assembly 100 can be improved.

[0050] For example Figure 4 As shown in the figure, the top plate part 1112 is formed with a first plate part and a second plate part. The first plate part extends in the horizontal direction. One end of the second plate part is connected with one end of the first plate part, and the other end extends towards the heating element 30 and forms a certain angle with the first plate part. In this way, the top plate part 1112 can be arranged along the circumference of the heating element 30, thereby the movement range of the airflow can be limited, the cooling area of the heating element 30 by the airflow can be increased, and the cooling effect of the heating element 30 by the airflow can be further improved.

[0051] According to some embodiments of the present application, as Figure 5 As shown in the figure, the electric control box assembly 100 further comprises an electric control board 50. The electric control board 50 is arranged 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 arranged on the electric control board 50. The electric control board 50 is an important component of the electric control box assembly 100. Various input signals are processed by the electric control board 50 and then controlled by the output circuit to control the entire air conditioner outdoor unit. The electric control board 50 is the control center of the electric control system. Meanwhile, the electric control board 50 is also provided with electric elements for controlling the air conditioner outdoor unit 1000, so as to control the operation of the compressor, the fan, the electric heating belt and other air conditioning equipment.

[0052] According to some embodiments of the present application, as Figure 5 As shown in the figure, the electric control box assembly 100 further comprises a heat dissipation member 60. The heat dissipation member 60 is arranged outside the first cavity 14 and the heat dissipation air duct 13. The heat dissipation member 60 is connected with the electric control board 50 and is used for dissipating heat for the electric control board 50. The heat dissipation member 60 has a heat conduction function, so that the heat generated by the electric control board 50 can be transferred to the heat dissipation member 60, and then dissipated to the air through the heat dissipation member 60, thereby completing the heat dissipation of the electric control board 50 and improving the use safety of the electric control board 50. The heat dissipation member 60 can include various heat dissipation fins.

[0053] According to some embodiments of the present application, as Figure 6As shown, the heat dissipation inlet 131 is arranged towards and communicates with the heat dissipation member 60, and the heat dissipation outlet 132 is arranged away from the heat dissipation member 60. Specifically, the heat dissipation inlet 131 and the heat dissipation member 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 exchange heat with the heat dissipation member 60, thereby achieving overall cooling of the electric control box assembly 100 and further improving the use 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 opposite to each other, which can facilitate the circulation of airflow, increase the smoothness of airflow passing through, 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.

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

[0056] Optionally, the base 31 is fixedly connected with the cover plate 40 by buckling, wherein a plurality of protrusions are formed on the base 31, and a plurality of grooves corresponding to the protrusions are formed on the side of the cover plate 40 facing the box cover 12. This can improve the convenience of mounting and dismounting the base 31 and the cover plate 40, thereby improving the convenience of mounting, dismounting and repairing the electric control box assembly 100.

[0057] According to some embodiments of the present application, the box body 11 and the box cover 12 are connected by clamping and / or fasteners. That is, the box body 11 and the box cover 12 can be connected only by clamping, which can improve the convenience of connecting and dismounting the box body 11 and the box cover 12; or can be connected only by fasteners, which can increase the connection tightness of the box body 11 and the box cover 12, thereby improving the sealing performance of the electric control box assembly 100; or can be connected by both clamping and fasteners, which can improve the sealing performance of the electric control box 100 while increasing the convenience of mounting and dismounting the electric control box 100.

[0058] The clamping connection can include various types, such as buckling connection. The fastener connection also includes various types, such as bolts or screws.

[0059] For example Figure 4As shown, the box cover 12 is further formed with a matching groove, and the periphery of the box body 11 is formed with an extension extending towards the box cover 12, and the extension is matched and connected with the matching groove, wherein when the electric control box assembly 100 is used for the air conditioner outdoor unit 1000, the box cover 12 is arranged above the box body 11, so that the box cover 12 is connected with the box body 11 through the matching groove, which can effectively avoid the impurities such as rainwater entering the box body 11 along the connection between the box cover 12 and the box body 11 to cause damage to the electric control element 20, and further can improve the use safety of the electric control box assembly 100.

[0060] 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 further improve the power conversion effect.

[0061] Further, the PFC inductor is an enameled wire, and the exposure will not cause sparking, and further the safety of the electric control box assembly 100 can be improved, so that the safety and reliability of the whole machine can be improved.

[0062] According to the air conditioner outdoor unit 1000 of the second aspect of the present application, the air conditioner outdoor unit 1000 comprises a shell 200, a fan wheel 300 and the electric control box assembly 100 according to the first aspect of the present application, and the fan wheel 300 and the electric control box assembly 100 are arranged in the shell 200.

[0063] The shell 200 provides mounting space for the fan wheel 300 and the electric control box 10; the fan wheel 300 is adapted to drive the airflow in the heat dissipation air duct 13 to flow from the heat dissipation inlet 131 to the heat dissipation outlet 132, and further to realize the 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 fan wheel 300 assembly, the heat dissipation inlet 131 is arranged towards the fan wheel 300, and the heat dissipation outlet 132 is arranged away from the fan wheel 300, at this time, the rotation of the fan wheel 300 can drive the circumferential airflow to rotate along the circumference of the fan wheel 300, and further 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 fan wheel 300, and no airflow is generated at the heat dissipation outlet 132, and further no resistance is generated at the heat dissipation outlet 132, so that the airflow can be smoothly discharged, and further the heat dissipation effect of the heating element 30 can be improved.

[0065] According to the air conditioner outdoor unit 1000 of the present application, the electric control box assembly 100 of the above first aspect is arranged, and the overall performance of the air conditioner outdoor unit 1000 is improved.

[0066] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0067] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0068] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] In the description of the present application, the description of 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 the present application, the illustrative description of the above terms is not necessarily directed 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 the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0070] Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electric control box assembly for an air conditioner outdoor unit, characterized by, The electric control box assembly comprises: an electric control box defining a first cavity and a heat dissipation air duct, the first cavity being not communicated with the heat dissipation air duct, the heat dissipation air duct having a heat dissipation inlet and a heat dissipation outlet; an electric control element arranged in the first cavity and a heating element arranged in the heat dissipation air duct.

2. The electrical control box assembly of claim 1, wherein, The electric control box comprises a box body and a box cover, the box body being open on one side, the box cover being arranged on the open side of the box body, the heating element and the electric control element being arranged on the side of the box cover facing the box body, the heat dissipation inlet and the heat dissipation outlet being formed on the box body.

3. The electrical control box assembly of claim 2, wherein, The electric control box assembly further comprises a cover plate connected with the box cover and covering the outside of the heating element, the cover plate and the box body cooperating to define the heat dissipation air duct.

4. The electrical control box assembly of claim 3, wherein, The cover plate comprises a ring-shaped portion connected with the box cover and extending in a ring shape along the circumference of the heating element, and a baffle portion connected on the side of the ring-shaped portion away from the box cover and extending along the circumference of the ring-shaped portion. The box body is provided with a surrounding plate extending along the circumference of the ring-shaped portion, the surrounding plate being sealingly connected with the cover plate along the circumference to define the heat dissipation air duct.

5. The electrical control box assembly of claim 4, wherein, The surrounding plate comprises a side plate portion extending along the circumference of the ring-shaped portion and abutting the baffle portion in the circumferential direction of the ring-shaped portion, and a top plate portion connected on the end of the side plate portion away from the box cover and sealingly connected with the baffle portion.

6. The electrical control box assembly of claim 2, wherein, The electric control box assembly further comprises an electric control board arranged on the side of the box cover facing the box body, the electric control element and the heating element being arranged on the electric control board.

7. The electrical control box assembly of claim 6, wherein, The electric control box assembly further comprises: a heat dissipation member arranged outside the first cavity and the heat dissipation air duct, the heat dissipation member being connected with the electric control board for dissipating heat from the electric control board.

8. The electrical control box assembly of claim 7, wherein, The heat dissipation inlet is arranged towards the heat dissipation member and is communicated with the heat dissipation member, and the heat dissipation outlet is arranged away from the heat dissipation member.

9. The electrical control box assembly of claim 6, wherein, The heating element comprises a base and a heating body arranged on the base, the base being fixedly connected with the electric control board.

10. The electrical control box assembly of claim 2, wherein, The box body and the box cover are connected by a clamping connection and / or fasteners.

11. The electrical control box assembly of claim 1, wherein, The heating element is a PFC inductor.

12. An air conditioner outdoor unit characterized by comprising: The electric control box assembly according to any one of claims 1-11 is arranged in a housing together with a fan wheel.

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