Electric appliance box assembly, air conditioner outdoor unit and air conditioner

Abstract

The utility model provides an electric appliance box assembly, an air conditioner outdoor unit and an air conditioner, relates to the technical field of air conditioners, and solves the technical problem of poor heat dissipation effect due to the fact that only a radiator is adopted to dissipate heat of an electric appliance box part in the prior art. The electric appliance box assembly, the air conditioner outdoor unit and the air conditioner comprise an electric appliance box body and a first flow guide cover. A ventilation grid is arranged on the electric appliance box main body, the first flow guide cover is buckled on the ventilation grid, and the first flow guide cover and the ventilation grid form a heat dissipation channel for heat dissipation air to circulate; a flow guide part facing the electric appliance box main body is arranged on the first flow guide cover, an extension part extending towards the direction of the first flow guide cover is formed on the ventilation grille, and the orthographic projection of the flow guide part in the vertical direction partially coincides with the orthographic projection of the extension part in the vertical direction. The utility model provides the electric appliance box assembly, the air conditioner outdoor unit and the air conditioner, which can improve the heat dissipation effect of the electric appliance box assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an electrical box component, an air conditioner outdoor unit and an air conditioner. Background Art

[0002] On the mainboard of the vertical discharge box, the components that need heat dissipation are divided into front components and back components. The components that need to be paid attention to on the front are: inductors, capacitors, chokes, etc.; the components that need to be paid attention to on the back are: IPM modules, IGBT modules, rectifier bridges, diodes, etc. The electronic components on the electrical box parts will generate high temperatures during operation. If the heat is not dissipated in time, the electronic components will burn out or explode.

[0003] In the prior art, a radiator is usually used as a heat dissipation component of the electrical box component of the air conditioner outdoor unit to enhance the heat dissipation. However, the amount of heat dissipation air flowing through the radiator is small, resulting in poor heat dissipation effect of the radiator, which can easily cause the electronic components in the electrical box component to be damaged due to high temperature.

[0004] The prior art also provides a heat dissipation component, which increases the heat dissipation effect of the electrical box component by arranging a guide structure on the radiator. The guide structure is used to collect the heat dissipation wind onto the radiator. However, the heat dissipation effect of the electrical box component is improved only by changing the heat dissipation effect of the radiator. When the heat dissipation is performed on the electrical box component of an air conditioner having multiple components, the heat dissipation effect is still poor. Utility Model Content

[0005] The purpose of the utility model is to provide an electrical box assembly, an air conditioner outdoor unit and an air conditioner, so as to solve the technical problem that only a radiator is used to dissipate heat from the electrical box components in the prior art, and the heat dissipation effect is poor. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by the utility model are described in detail below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The electric appliance box assembly provided by the utility model comprises an electric appliance box body and a first air guide cover;

[0008] in:

[0009] The electrical box body is provided with a ventilation grille, the first air guide cover is buckled on the ventilation grille, and a heat dissipation channel for heat dissipation air to flow is formed between the first air guide cover and the ventilation grille;

[0010] The first air guide cover is provided with an air guide portion facing the electrical box body, and the ventilation grille is provided with an extension portion extending on the electrical box body toward the first air guide cover, and the orthographic projection of the air guide portion in the vertical direction partially overlaps with the orthographic projection of the extension portion in the vertical direction.

[0011] Preferably, the orthographic projection dimension of the air guide portion in the vertical direction is a, the orthographic projection dimension of the extension portion in the vertical direction is b, the orthographic projection dimension of the first air guide cover in the vertical direction is c, and 1.05c≤a+b≤1.35c.

[0012] Preferably, the guide portion is a guide plate arranged to be inclined downward toward the electrical box body.

[0013] Preferably, the first air deflector is overlapped above the extension portion, and the overlap length between the first air deflector and the extension portion is 100 mm-120 mm.

[0014] Preferably, it further comprises a second air guide cover, a radiator is arranged on the electrical box, and the second air guide cover is arranged on one side of the radiator;

[0015] The second air guide cover is provided with an air guide portion, and the cross-sectional area of ​​the air guide portion decreases along the flow direction of the heat dissipation air.

[0016] Preferably, a gap is provided between the second air guide cover and the radiator.

[0017] Preferably, the first air guide cover and the second air guide cover are integrally formed.

[0018] Preferably, the first air guide cover and the second air guide cover are connected to the electrical box body by means of a snap structure and / or screws.

[0019] An air conditioner outdoor unit comprises the electrical box assembly as described above.

[0020] Preferably, the air conditioner outdoor unit comprises a casing, an axial flow fan blade assembly and a compressor, and the electrical box assembly is arranged between the axial flow fan blade assembly and the compressor.

[0021] Preferably, a partition is provided between the axial flow fan blade assembly and the compressor, both ends of the partition are fixed on the outer shell, and the electrical box assembly is provided on the partition.

[0022] An air conditioner comprises the air conditioner outdoor unit as described above.

[0023] The beneficial effects of the utility model are as follows: the electrical box assembly, air-conditioning outdoor unit and air conditioner provided by the utility model include an electrical box main body and a first air guide cover, a ventilation grille is arranged on the electrical box main body, the first air guide cover is buckled on the ventilation grille, and a heat dissipation channel for heat dissipation wind to circulate is formed between the first air guide cover and the electrical box main body, firstly, the air on one side (high-pressure area) of the compressor of the air-conditioning outdoor unit can flow into the axial fan blade cavity (low-pressure area) through the heat dissipation channel between the ventilation grille and the first air guide cover, taking away the heat of the components on the circuit board on the electrical box main body, thereby improving the heat dissipation effect of the electrical box components.

[0024] Secondly, the first air guide cover is provided with an air guide portion facing the electrical box body, which can guide the wind in the heat dissipation channel to the side of the electrical box body facing the axial flow fan blade cavity to achieve increased heat dissipation effect of the electrical box body.

[0025] In addition, the ventilation grille is provided with an extension portion extending on the electrical box body in the direction of the first air guide cover, and the orthographic projection of the air guide portion in the vertical direction partially overlaps with the orthographic projection of the extension portion in the vertical direction, thereby ensuring that the air guide portion and the extension portion partially overlap in the vertical direction, thereby ensuring that when it rains, rainwater splashes onto the first air guide cover under the rotation of the axial flow fan blades, thereby having a good waterproof effect and also having an insect-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the air conditioner outdoor unit of the utility model;

[0028] Figure 2 It is a three-dimensional diagram of the electrical box assembly of the utility model (I);

[0029] Figure 3 It is a three-dimensional diagram of the electrical box assembly of the utility model (II);

[0030] Figure 4 It is a cross-sectional view of the electrical box assembly of the utility model;

[0031] Figure 5 The utility model is an electrical box component Figure 4 Side view of

[0032] Figure 6It is a structural schematic diagram of the main body of the electrical box of the utility model;

[0033] Figure 7 It is a structural schematic diagram of the flow guide structure of the utility model.

[0034] In the figure:

[0035] 100. Electrical box body;

[0036] 110. Ventilation grille;

[0037] 120, extension;

[0038] 130. Radiator;

[0039] 140, a first positioning portion;

[0040] 150, second positioning portion;

[0041] 200. diversion structure;

[0042] 210, first fairing;

[0043] 220, second fairing;

[0044] 230, diversion part;

[0045] 240, drainage;

[0046] 300, housing;

[0047] 310, partition;

[0048] 400, axial flow fan blade assembly;

[0049] 500. Compressor. DETAILED DESCRIPTION

[0050] Please refer to the attached figure below Figure 1 to Figure 7And the text content understands the content of the utility model and the difference between the utility model and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the utility model by means of the accompanying drawings and the enumeration of some optional embodiments of the utility model. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the utility model in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementations, so those skilled in the art should know that: any technical means provided by the utility model can be replaced or any two or more technical means or technical features provided by the utility model can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the utility model. The scope of protection of the utility model should include any alternative technical solutions that can be thought of by those skilled in the art without creative labor and new technical solutions obtained by combining any two or more technical means or technical features provided by the utility model.

[0051] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0053] The utility model provides an electrical box component, an air conditioner outdoor unit and an air conditioner with improved heat dissipation effect.

[0054] Combine the following Figure 1 to Figure 7 The technical solution provided by the utility model is described in more detail.

[0055] The utility model provides an electrical box assembly, comprising an electrical box body 100 and a first air guide cover 210;

[0056] in:

[0057] The electrical box body 100 is provided with a ventilation grille 110, the first air guide cover 210 is buckled on the ventilation grille 110, and a heat dissipation channel for heat dissipation air to flow is formed between the first air guide cover 210 and the ventilation grille 110;

[0058] The first air guide cover 210 is provided with an air guide portion 230 facing the electrical box body 100, and the ventilation grille 110 is provided with an extension portion 120 extending toward the first air guide cover 210, and the orthographic projection of the air guide portion 230 in the vertical direction partially overlaps with the orthographic projection of the extension portion 120 in the vertical direction.

[0059] The electrical box assembly provided by the utility model includes an electrical box body 100 and a first air guide cover 210. A ventilation grille 110 is arranged on the electrical box body 100. The first air guide cover 210 is buckled on the ventilation grille 110, and a heat dissipation channel for heat dissipation wind to circulate is formed between the first air guide cover 210 and the electrical box body 100. First, the air on one side (high-pressure area) of the air conditioner outdoor unit compressor 500 can flow into the axial fan blade cavity (low-pressure area) through the heat dissipation channel between the ventilation grille 110 and the first air guide cover 210, taking away the heat of the components on the circuit board on the electrical box body 100, thereby improving the heat dissipation effect of the electrical box components.

[0060] Secondly, the first air guide cover 210 is provided with an air guide portion 230 facing the electrical box body 100 , and the air guide portion 230 can guide the wind in the heat dissipation channel to the side of the electrical box body 100 facing the axial flow fan blade cavity to achieve increased heat dissipation effect of the electrical box body 100 .

[0061] In addition, the ventilation grille 110 is provided with an extension portion 120 extending on the electrical box body 100 in the direction of the first air guide cover 210, and the orthographic projection of the air guide portion 230 in the vertical direction partially overlaps with the orthographic projection of the extension portion 120 in the vertical direction, which can ensure that the air guide portion 230 and the extension portion 120 have partial overlap in the vertical direction, and can ensure that when it rains, when rainwater splashes onto the first air guide cover 210 under the rotation of the axial flow fan blades, it has a good waterproof effect and can also play an insect-proof role.

[0062] In some embodiments of the present invention, the orthographic projection dimension of the guide portion 230 in the vertical direction is a, the orthographic projection dimension of the extension portion 120 in the vertical direction is b, and the orthographic projection dimension of the first air guide cover 210 in the vertical direction is c, 1.05c≤a+b≤1.35c.

[0063] In some of the above embodiments of the present invention, in order to ensure a good waterproof effect while taking into account ventilation capacity, 1.05c≤a+b≤1.35c.

[0064] Specifically, the overlap degree of the guide portion 230 and the extension portion 120 in the vertical direction was measured. When a+b<c, the rain test result failed. The size was subsequently adjusted to a+b≈1.15c to pass the rain test. If the size of a+b is too large, the resistance of the heat dissipation channel will increase, the ventilation capacity will decrease, and the temperature rise of the mainboard of the air conditioner will be too high when it is working.

[0065] In some embodiments of the present invention, the guide portion 230 is a guide plate that is tilted downward toward the electrical box body 100 .

[0066] In some of the above-mentioned embodiments of the utility model, the guide portion 230 is a guide plate arranged to be tilted downward. The guide plate is arranged to be tilted downward, which can better achieve the guiding effect of the heat dissipation wind, increase the downward wind guiding capacity of the guide plate, and increase the wind guiding area blowing toward the electrical box, thereby further improving the heat dissipation effect of the electrical box body 100.

[0067] Specifically, the inclination angle of the guide plate is 30-60 degrees.

[0068] Preferably, the inclination angle of the guide plate is 45 degrees.

[0069] Furthermore, in order to ensure the connection effect between the first air guide cover 210 and the electrical box body 100, the first air guide cover 210 is laid above the extension part 120, and the overlapping length between the first air guide cover 210 and the extension part 120 is 100mm-120mm.

[0070] In this further improvement, the overlapping length between the first air deflector 210 and the extension portion 120 can be beneficial to the stability of the first air deflector 210 .

[0071] In some embodiments of the present invention, a second air guide cover 220 is further included. The electrical box is provided with a radiator 130, and the second air guide cover 220 is provided on one side of the radiator 130;

[0072] The second air guide cover 220 is provided with a guide portion 240 , and the cross-sectional area of ​​the guide portion 240 decreases along the flow direction of the heat dissipation air.

[0073] In some of the above-mentioned embodiments of the utility model, the electrical box assembly also includes a second air guide cover 220, and the second air guide cover 220 is partially on one side of the radiator 130 arranged on the electrical box. The second air guide cover 220 is provided with a drainage portion 240, and the drainage portion 240 is used to collect the heat dissipation wind to the radiator 130, thereby improving the heat dissipation effect of the electrical box main body 100 by improving the heat dissipation effect of the radiator 130.

[0074] The cross section of the guide portion 240 decreases along the flow direction of the heat dissipation air, which can maximize the introduction of the heat dissipation air and ensure that the electrical box body 100 has a good heat dissipation effect.

[0075] It can be understood that the second air guide cover 220 is arranged on one side of the radiator 130 arranged on the electrical box, which means that the radiator 130 includes a first part and a second part, the first part is located inside the second air guide cover 220, and the second part is located outside the second air guide cover 220.

[0076] Furthermore, the drainage portion 240 is substantially funnel-shaped.

[0077] In some embodiments of the present invention, a gap is provided between the second air guide cover 220 and the radiator 130 to increase the flow rate of heat exchange air and enhance the heat exchange effect.

[0078] In some embodiments of the present invention, the first air guide cover 210 and the second air guide cover 220 are integrally formed.

[0079] In some of the above embodiments of the present invention, the first air guide cover 210 and the second air guide cover 220 are fixed on the electrical box body 100 at the same time, which effectively reduces the installation efficiency and improves the connection effect of the electrical box body 100, the first air guide cover 210 and the second air guide cover 220.

[0080] In some other embodiments of the present invention, the first air guide cover 210 and the second air guide cover 220 are connected to the electrical box body 100 by means of a snap-fit ​​structure and / or screws.

[0081] In some other embodiments of the utility model mentioned above, the first air deflector 210 and the second air deflector 220 are connected to the electrical box body 100 through a snap-fit ​​structure, and the snap-fit ​​structure is a snap-fit ​​structure in the prior art, for example, a snap block and a snap slot match, a protrusion and a groove match, etc.

[0082] or;

[0083] The first air guide cover 210 and the second air guide cover 220 are connected to the electrical box body 100 by screws. By setting mounting holes on the first air guide cover 210 and the second air guide cover 220, setting mounting holes at corresponding positions on the electrical box body 100, and connecting the electrical box body 100, the first air guide cover 210 and the second air guide cover 220 by screws, the first air guide cover 210 and the electrical box body 100, and the second air guide cover 220 and the electrical box body 100 are installed.

[0084] The utility model also provides an air-conditioner outdoor unit, comprising the electrical appliance box assembly as described above.

[0085] Furthermore, the air conditioner outdoor unit includes an axial flow fan blade assembly 400 and a compressor 500 , and the electrical box assembly is arranged between the axial flow fan blade assembly 400 and the compressor 500 .

[0086] The utility model provides an air conditioner outdoor unit, including an axial flow fan blade assembly 400, a compressor 500 and the electrical box assembly as described above, wherein the electrical box assembly is arranged between the axial flow fan blade assembly 400 and the compressor 500, and firstly enables the air on one side (high pressure area) of the air conditioner outdoor unit compressor 500 to flow into the axial flow fan blade cavity (low pressure area) through the heat dissipation channel between the ventilation grille 110 and the first air guide cover 210, thereby taking away the heat of the components on the circuit board on the electrical box body 100, thereby improving the heat dissipation effect of the electrical box components.

[0087] Secondly, the first air guide cover 210 is provided with an air guide portion 230 facing the electrical box body 100 , and the air guide portion 230 can guide the wind in the heat dissipation channel to the side of the electrical box body 100 facing the axial flow fan blade cavity to achieve increased heat dissipation effect of the electrical box body 100 .

[0088] In addition, the ventilation grille 110 is provided with an extension portion 120 extending on the electrical box body 100 in the direction of the first air guide cover 210, and the orthographic projection of the air guide portion 230 in the vertical direction partially overlaps with the orthographic projection of the extension portion 120 in the vertical direction, which can ensure that the air guide portion 230 and the extension portion 120 have partial overlap in the vertical direction, and can ensure that when it rains, when rainwater splashes onto the first air guide cover 210 under the rotation of the axial flow fan blades, it has a good waterproof effect and can also play an insect-proof role.

[0089] In some embodiments of the present invention, a partition 310 is provided between the axial fan blade assembly 400 and the compressor 500 , the partition 310 is provided on the housing 300 of the air conditioner outdoor unit, and the electrical box assembly is provided on the partition 310 .

[0090] Specifically, a first positioning hole and a second positioning hole are provided on the partition 310, and a first positioning portion 140 and a second positioning portion 150 are provided on the electrical box assembly. The first positioning portion 140 is matched with the first positioning hole, and the second positioning portion 150 is matched with the second positioning hole. The electrical box assembly is positioned on the partition 310 by the first positioning portion 140 and the first positioning hole, and the second positioning portion 150 and the second positioning hole.

[0091] In some embodiments of the present invention, the extension portion 120 overlaps the partition 310 to ensure that the electrical box assembly is stably connected to the partition 310 and the electrical box assembly is stably connected.

[0092] In some embodiments of the present invention, a positioning structure is further provided between the partition plate 310 and the housing 300 of the air conditioner outdoor unit to ensure the stability of the electrical box assembly.

[0093] The utility model also provides an air conditioner, comprising the air conditioner outdoor unit as described above.

[0094] Embodiment 1:

[0095] The electrical box assembly provided by the utility model includes an electrical box body 100 and a guide structure 200. The guide structure 200 is used to direct the air on one side (high-pressure area) of the air conditioner outdoor unit compressor 500 through the heat dissipation channel between the ventilation grille 110 and the first guide cover 210 into the axial flow fan blade cavity (low-pressure area), taking away the heat of the components on the circuit board on the electrical box body 100, and can gather the heat dissipation wind to the radiator 130 of the electrical box body 100.

[0096] Furthermore, the flow guiding structure 200 includes a first flow guiding cover 210 and a second flow guiding cover 220, wherein:

[0097] The electrical box body 100 is provided with a ventilation grille 110, the first air guide cover 210 is buckled on the ventilation grille 110, and a heat dissipation channel for heat dissipation air to flow is formed between the first air guide cover 210 and the electrical box body 100;

[0098] The first air guide cover 210 is provided with an air guide portion 230 facing the electrical box body 100, and the ventilation grille 110 is provided with an extension portion 120 extending on the electrical box body 100 toward the first air guide cover 210, and the orthographic projection of the air guide portion 230 in the vertical direction partially overlaps with the orthographic projection of the extension portion 120 in the vertical direction.

[0099] Specifically, the guide portion 230 is a guide plate arranged to be tilted downward toward the electrical box body 100. The extension portion 120 is a frame body enclosed on the ventilation grille 110. The frame body guides the wind flowing from the ventilation grille 110 to the first guide cover 210, and guides the wind to the other side of the electrical box body 100 through the guide portion 230.

[0100] More specifically, the orthographic projection dimension of the air guide portion 230 in the vertical direction is a, the orthographic projection dimension of the extension portion 120 in the vertical direction is b, and the orthographic projection dimension of the first air guide cover 210 in the vertical direction is c, and 1.05c≤a+b≤1.35c.

[0101] Furthermore, a radiator 130 is disposed on the electrical box body 100 , and the second air guide cover 220 is disposed on one side of the radiator 130 ;

[0102] The second air guide cover 220 is provided with a guide portion 240 , and the cross section of the guide portion 240 is decreasing along the flow direction of the heat dissipation air.

[0103] Specifically, a gap is provided between the second air guide cover 220 and the radiator 130 to increase the flow rate of the heat exchange air and enhance the heat exchange effect.

[0104] The air conditioner outdoor unit provided by the utility model comprises a housing 300, an axial flow fan blade assembly 400 and a compressor 500, wherein the electrical box assembly is arranged between the axial flow fan blade assembly 400 and the compressor 500.

[0105] Specifically, a partition plate 310 is disposed between the axial fan blade assembly 400 and the compressor 500 , both ends of the partition plate 310 are fixed on the housing 300 , and the electrical box assembly is disposed on the partition plate 310 .

[0106] The air conditioner provided by the utility model comprises the air conditioner outdoor unit as described above.

[0107] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" 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 representation of the above terms does 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.

[0108] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An electrical box assembly, characterized in that: It includes an electrical box body and a first air guide cover; in: The electrical box body is provided with a ventilation grille, the first air guide cover is buckled on the ventilation grille, and a heat dissipation channel for heat dissipation air to flow is formed between the first air guide cover and the ventilation grille; The first air guide cover is provided with an air guide portion facing the electrical box body, the ventilation grille is formed with an extension portion extending toward the first air guide cover, and the orthographic projection of the air guide portion in the vertical direction partially overlaps with the orthographic projection of the extension portion in the vertical direction.

2. The electrical box assembly according to claim 1, characterized in that: The orthographic projection dimension of the air guide portion in the vertical direction is a, the orthographic projection dimension of the extension portion in the vertical direction is b, and the orthographic projection dimension of the first air guide cover in the vertical direction is c, 1.05c≤a+b≤1.35c.

3. The electrical box assembly according to claim 1, characterized in that: The guide part is a guide plate arranged to be inclined downward toward the main body of the electrical box.

4. The electrical box assembly according to claim 1, characterized in that: The first air deflector is arranged above the extension portion, and the overlapping length between the first air deflector and the extension portion is 100 mm-120 mm.

5. The electrical box assembly according to any one of claims 1 to 4, characterized in that: It also includes a second air guide cover, the electrical box is provided with a radiator, and the second air guide cover is provided on one side of the radiator; The second air guide cover is provided with an air guide portion, and the cross-sectional area of ​​the air guide portion decreases along the flow direction of the heat dissipation air.

6. The electrical box assembly according to claim 5, characterized in that: A gap is arranged between the second air guide cover and the radiator.

7. The electrical box assembly according to claim 5, characterized in that: The first air guide cover and the second air guide cover are integrally formed.

8. An air conditioner outdoor unit, characterized in that: It comprises an electrical box assembly as described in any one of claims 1-7.

9. The air conditioner outdoor unit according to claim 8, characterized in that: The air conditioner outdoor unit comprises a housing, an axial flow fan blade assembly and a compressor, wherein the electrical box assembly is arranged between the axial flow fan blade assembly and the compressor; A partition is arranged between the axial flow fan blade assembly and the compressor, two ends of the partition are fixed on the housing, and the electrical box assembly is arranged on the partition.

10. An air conditioner, characterized in that: Comprising an air conditioner outdoor unit as described in claim 8 or 9.

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