An electrical box assembly, air conditioner

Abstract

The application provides an electric appliance box assembly and an air conditioner. The electric appliance box assembly comprises a main body for mounting components, the main body having a first side and a second side; and a flow guide cover, the main body (1) being inserted into the flow guide cover from an open end of the flow guide cover, the main body being at least partially located in the flow guide cover, a gap being formed between the main body and the flow guide cover, an air inlet being formed between the open end of the flow guide cover and the second side, and an air outlet being formed between the open end of the flow guide cover and the first side, air flowing into the gap from the air inlet and flowing out of the air outlet. According to the application, the technical problem of poor heat dissipation of the electric appliance box in the prior art, which leads to reduced reliability of the components, can be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to an electric appliance box assembly and an air conditioner. BACKGROUND

[0002] The electric appliance box of an air conditioner integrates many electric components. When working, the electric components generate heat. In order to dissipate the heat of the electric components of the electric appliance box, a heat pipe heat dissipation structure is used to dissipate the heat of the electric components.

[0003] The existing heat pipe heat dissipation structure mainly comprises heat dissipation fins and a heat pipe. The heat pipe is used to collect the heat of the electric components, and the heat dissipation fins are connected with the heat pipe and used to dissipate the heat of the heat pipe. At present, the cooperation mode of the electric components in the electric appliance box of the existing air conditioner and the heat pipe heat dissipation structure is that the heat pipe of the heat pipe heat dissipation structure adopts a long strip-shaped heat pipe, and the multiple components of the electric appliance box are distributed on both sides of the long strip-shaped heat pipe. When dissipating the heat of the electric appliance box with multiple components, since the multiple components are concentrated on a line, the heat emitted is also concentrated, and the electric appliance box cannot effectively and uniformly dissipate the heat, which will greatly affect the reliability and service life of the components, and in severe cases, will cause component failure, unit damage and even safety accidents.

[0004] Since the electric appliance box in the prior art has poor heat dissipation effect, which leads to the technical problem of reduced reliability and service life of the electric components, the present application researches and designs an electric appliance box assembly and an air conditioner. SUMMARY

[0005] Therefore, the present application provides an electric appliance box assembly and an air conditioner, which can solve the technical problem of poor heat dissipation effect of the electric appliance box in the prior art, which leads to reduced reliability of the electric components.

[0006] In order to solve the above problems, the present application provides an electric appliance box assembly, which comprises: a main body, the main body is used to mount components, and the main body has a first side and a second side; a fairing, the main body (1) is inserted into the fairing from the opening end of the fairing, the main body is at least partially located in the fairing, there is a gap between the main body and the fairing, an air inlet is formed between the opening end of the fairing and the second side, and an air outlet is formed between the opening end of the fairing and the first side, air flows into the gap from the air inlet and flows out of the air outlet.

[0007] In some embodiments, the part of the main body located in the fairing is provided with a heat dissipation member, the heat dissipation member is located on the first side, and the air flowing into the gap can flow through the heat dissipation member.

[0008] In some embodiments, the fairing comprises a third side wall, a bottom wall and a fourth side wall, one side of the bottom wall is connected to the third side wall, the other side of the bottom wall is connected to the fourth side wall, one end of the third side wall away from the bottom wall forms an air inlet between the second side, one end of the fourth side wall away from the bottom wall forms an air outlet between the first side, and the bottom wall is connected to the end of the main body by a connecting piece.

[0009] In some embodiments, the main body has a first end extending into the fairing, a grating is arranged between the bottom wall and the first end, one end of the grating is arranged on the bottom wall, and the other end of the grating is arranged on the first end, and the airflow in the gap can flow through the grating.

[0010] In some embodiments, a baffle is arranged on the first side, the baffle is opposite to one end of the fourth side wall away from the bottom wall, and the baffle and one end of the fourth side wall away from the bottom wall form an air outlet.

[0011] In some embodiments, the fourth side wall comprises a first section, a second section and a third section, two ends of the second section are connected to the first section and the third section respectively, and one end of the first section away from the second section is connected to the bottom wall, so that the bottom wall, the first section, the second section and the third section form a stepped structure.

[0012] In some embodiments, the minimum distance between the baffle and the fourth side wall is a, the width direction is perpendicular to the first side, the width of the second section is b, and the minimum distance between the third section and the first side is c, which satisfies b≥1.2a and a≤0.5c.

[0013] In some embodiments, a>10mm.

[0014] In some embodiments, the first protrusion is arranged on both sides of the bottom wall, the first protrusion extends towards the main body, the length direction is the direction of the bottom wall towards the main body, the width direction is perpendicular to the first side, the length of the first protrusion e is 20mm-40mm, and the width of the first protrusion f is 5mm-15mm.

[0015] The application also provides an air conditioner comprising the above-mentioned electrical box assembly, a fan and a compressor, the second side faces the compressor, and the first side faces the fan.

[0016] In some embodiments, when the minimum distance between the baffle and the fourth side wall is a, the width direction is perpendicular to the first side, the width of the second section is b, the minimum distance between the third section and the first side is c, the radial direction of the air inlet is the horizontal direction, and the horizontal distance between the body and the fan blade profile is d, c≤0.8d is satisfied.

[0017] The electric appliance box assembly and the air conditioner provided by the application have the following beneficial effects.

[0018] The gap between the body and the flow guide cover forms an airflow channel, so that the airflow flows into the gap from the air inlet and flows out of the air outlet. When the airflow flows in the gap, the heat of the body can be taken away, thereby cooling the body. The problem that the heat of the high-temperature components on the mainboard of the electric appliance box cannot be taken away due to the unreasonable air flow through the high-temperature components is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. The drawings in the following description are only exemplary, and those skilled in the art can also obtain other drawings according to the provided drawings without creative labor.

[0020] Figure 1 is a perspective view of the electric appliance box assembly of the embodiment of the application;

[0021] Figure 2 is a structural schematic view of the body in the electric appliance box assembly of the embodiment of the application;

[0022] Figure 3 is a bottom view of the flow guide cover in the electric appliance box assembly of the embodiment of the application;

[0023] Figure 4 is a perspective view of the flow guide cover in the electric appliance box assembly of the embodiment of the application

[0024] Figure 5 is a top view of the flow guide cover in the electric appliance box assembly of the embodiment of the application

[0025] Figure 6 is a side view of the electric appliance box assembly of the embodiment of the application Figure 1 ;

[0026] Figure 7 is a side view of the electric appliance box assembly of the embodiment of the application Figure 2 ;

[0027] Figure 8is a side view of an electrical box assembly according to an embodiment of the present invention Figure 3 ;

[0028] Figure 9 is a side view dimensioned drawing of an electrical box assembly according to an embodiment of the present invention

[0029] Figure 10 is a side view of a fairing in an electrical box assembly according to an embodiment of the present invention

[0030] Figure 11 is an assembly drawing of an electrical box assembly according to an embodiment of the present invention

[0031] Figure 12 is a structural schematic view of an air conditioner according to another embodiment of the present invention.

[0032] 1, main body; 2, fairing; 3, heat dissipation piece; 4, baffle; 5, main plate; 6, grille; 7, first section; 8, second section; 9, third section; 10, fan; 11, first protrusion; 12, second protrusion; 13, third protrusion; 14, fourth protrusion; 15, first side; 16, second side; 17, gap; 18, air outlet; 19, air inlet; 20, third side wall; 21, bottom wall; 22, fourth side wall; 23, first end; 24, compressor. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and not intended to be limiting on the application or its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0034] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0035] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "above" or "above" other elements or features would then be oriented "below" or "below" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative descriptors used herein interpreted accordingly.

[0036] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any actual physical or chronological difference between the components they describe, but are used merely for convenience and to distinguish one component from another. Unless otherwise stated, the use of these words is not intended to imply a special relationship or order among the components they describe, and these words should not be construed as limiting the scope of the present application.

[0037] With reference to Figures 1-12 As shown, according to the embodiment of the present application, an electrical box assembly is provided, comprising: a main body 1 for mounting components, the main body 1 having a second side 15 and a second side 16; a fairing 2, the main body 1 is inserted into the fairing 2 from the open end of the fairing 2, the main body 1 is at least partially located in the fairing 2, there is a gap 17 between the main body 1 and the fairing 2, the open end of the fairing 2 and the second side 16 form an air inlet 19, the open end of the fairing 2 and the first side 15 form an air outlet 18, air flows from the air inlet 19 into the gap 17, and flows out from the air outlet 18. In this technical solution, with reference to Figure 1 As shown, by the gap 17 between the main body 1 and the fairing 2, the gap 17 forms an air flow channel, so that the air flows from the air inlet 19 into the gap 17, and flows out from the air outlet 18. When the air flows in the gap 17, it can take away the heat of the main body 1, thereby cooling the main body 1. Thus, the problem that air cannot reasonably pass through the high-temperature components of the electrical box main board 5, so it cannot take away the heat of the high-temperature components on the main board 5, causing poor heat dissipation performance of the main board 5, is avoided. The main body 1 is the main body of the electrical box. The main body 1 is at least partially located in the fairing 2, that is, the main body 1 is inserted into the fairing 2, and the width of the opening of the fairing 2 is greater than the thickness of the main body 1, so that a gap 17 is formed between the fairing 2 and the main body 1.

[0038] In some embodiments, a heat sink 3 is provided on the portion of the main body 1 located inside the air guide shroud 2. The heat sink 3 is located on the second side 16, and airflow can pass through the heat sink 3 when it flows into the gap 17. In this technical solution, see [reference needed]. Figure 4 As shown, heat is collected from the main body 1 by the heat sink 3. When airflow flows into the gap 17, it can quickly exchange heat with the heat sink 3, thereby reducing the temperature of the main body 1. There can be a gap 17 between the heat sink 3 and the inner wall of the guide shroud 2, or the heat sink 3 can be in contact with the inner wall of the guide shroud 2, so that all the airflow passes through the heat sink 3, thereby improving the heat exchange efficiency between the heat sink 3 and the airflow. The heat sink 3 can be a finned heat exchanger, with the fins arranged in the same direction as the airflow so that the airflow can flow through the gap 17 between the fins.

[0039] In some embodiments, the air deflector 2 is U-shaped and includes a third sidewall 20, a bottom wall 21, and a fourth sidewall 22. One side of the bottom wall 21 is connected to the third sidewall 20, and the other side is connected to the fourth sidewall 22. An air inlet 19 is formed between the end of the third sidewall 20 facing away from the bottom wall 21 and the second side 16. An air outlet 18 is formed between the end of the fourth sidewall 22 facing away from the bottom wall 21 and the first side 15. The bottom wall 21 is connected to the end of the main body 1 via a connector. In this technical solution, the connector can be a screw. (See also...) Figure 2 and Figure 3 As shown, two connecting columns can be provided on the end of the main body 1, and two screw holes can be provided on the bottom wall 21. The screw holes and connecting columns are connected by screws, so that the flow guide shroud 2 is installed on the main body 1. Furthermore, due to the supporting effect of the connecting columns, a gap 17 is formed between the bottom wall 21 and the end of the main body 1, which is the airflow channel, to ensure that the airflow flows smoothly from the second side 16 to the second side 15, and performs all-round heat exchange on the main body 1.

[0040] In some embodiments, the main body 1 has a first end 23 extending into the air guide shroud 2, and a grille 6 is disposed between the bottom wall 21 and the first end 23. One end of the grille 6 is disposed on the first end 23 of the main body 1, and the other end is disposed on the bottom wall 21. Airflow within the gap 17 can flow through the grille 6. In this technical solution, see [reference needed]. Figure 2 As shown, a grille 6 is provided between the bottom wall 21 and the first end 23 of the main body 1. The grille 6 prevents larger insects, such as cockroaches and moths, from entering and causing malfunctions in the main circuit board of the electrical box, while smaller insects are less likely to damage the main circuit board components. The distance between the bottom wall 21 and the end of the main body 1 is at least 3mm, ensuring both the installation strength of the air guide shroud 2 and the airflow.

[0041] In some embodiments, the first side 15 is provided with a baffle 4 opposite to one end of the fourth side wall 22 away from the bottom wall 21, and the baffle 4 and the fourth side wall 22 form an air outlet 18. In this technical solution, referring to Figure 6 As shown, the baffle 4 can be arranged vertically with the main body 1, or can be arranged obliquely away from the bottom wall 21. In the radial cross section of the air inlet 19, the angle between the baffle 4 and the horizontal plane is preferably 15°-45°. The heat dissipation member 3 is arranged on the side of the baffle 4 facing the bottom wall 21, and the baffle 4 can limit the heat dissipation member 3, thereby ensuring the stability of the heat dissipation member 3. When installing, since the first side 15 faces the fan 10, the component mainboard 5 is installed on the second side 16. When the air conditioner is turned on in rainy days, rainwater will adhere to the axial flow fan blades of the fan 10, and the water droplets will flow into the air outlet 18 along the direction of rotation of the axial flow fan blades, thereby flowing into the flow guide cover 2. The baffle 4 can effectively block the rainwater flowing into the air outlet 18 while ensuring the air volume of the air outlet 18, thereby preventing the rainwater from entering the second side 16 and causing damage to the components, and improving the water blocking capacity of the electrical box when the air conditioner is turned on in rainy days.

[0042] In some embodiments, the fourth side wall 22 includes a first section 7, a second section 8, and a third section 9. The two ends of the second section 8 are connected to the first section 7 and the third section 9, respectively. The end of the first section 7 away from the second section 8 is connected to the bottom wall 21. The heat dissipation member 3 is opposite to the third section 9. Further, the first section 7 is parallel to the third section 9, and the second section 8 is parallel to the bottom wall 21, so that the bottom wall 21, the first section 7, the second section 8, and the third section 9 form a stepped structure. In this technical solution, referring to Figure 8 As shown, the heat dissipation member 3 is opposite to the third section 9, and the bottom wall 21, the first section 7, the second section 8, and the third section 9 form a stepped structure. When the air conditioner is turned on in rainy days, rainwater will adhere to the axial flow fan blades of the fan 10, and the water droplets will flow into the air outlet 18 along the direction of rotation of the axial flow fan blades, thereby flowing into the flow guide cover 2. The rainwater flows from the air outlet 18 to the bottom wall 21 in the flow guide cover 2. When the rainwater flows through the heat dissipation member 3, it first exchanges heat with the heat dissipation member 3, and then collides with the second section 8 and the bottom wall 21, so that the rainwater flows through the heat dissipation member 3 again under the action of gravity and is discharged from the air outlet 18. At this time, the heat dissipation member is subjected to secondary heat exchange, thereby improving the heat dissipation efficiency of the heat dissipation member 3, preventing the rainwater from entering the second side 16 and causing damage to the components, and improving the water blocking capacity of the electrical box when the air conditioner is turned on in rainy days. The first section 7 and the second section 8 can be connected vertically, or can be connected through a slope, or can be connected through a circular arc chamfer, and other connection modes with the same effect are also available.

[0043] In some embodiments, the minimum distance between the baffle 4 and the fourth side wall 22 is a, the width of the second section 8 is b, the minimum distance between the third section 9 and the first side 15 is c, which satisfies b≥1.2a, a≤0.5c, in the technical solution, referring to Figure 7 As shown, after the body 1 and the fairing 2 are assembled, b≥1.2a must be met to ensure the water blocking capacity of the second section 8, and when b=a, the rain test result is unqualified. In the simulation experiment, the size of the second section 8 b≈1.18a passes the rain test, and a≤0.5c ensures the design size of other features. If the size of a is too large, it will cause the length of other features to be too short, preferably a>10mm to ensure the heat dissipation capacity. If the size of a is too small, it will cause the ventilation capacity of the gap 17 to be insufficient; the size of c is too long, which will cause interference between the fairing and the axial flow fan blade. Therefore, the size of c determines the distance from the axial flow fan blade on the air conditioner outdoor unit, so the value is different on each air conditioner outdoor unit.

[0044] In some embodiments, referring to Figure 4 and Figure 5 As shown, the first protrusion 11 is arranged on both sides of the bottom wall 21, the first protrusion 11 extends towards the body 1, the direction of the bottom wall 21 towards the body 1 is the length direction, and the direction perpendicular to the first side 15 is the width direction. The length e of the first protrusion 11 is 20mm-40mm, and the width f of the first protrusion 11 is 5mm-15mm. In the technical solution, through the first protrusion 11, positioning between the fairing 2 and the body 1 is formed during installation, which ensures that the difficulty in assembling with the electrical appliance box is reduced. The length of the first protrusion 11 is 20mm-40mm, and the width of the first protrusion 11 is 5mm-15mm. The length of the first protrusion 11 is not too short to ensure the stability between the fairing and the electrical appliance box after assembly, and the length of the first protrusion 11 is not too long to ensure that it does not affect the design of other features.

[0045] Referring to Figure 3As shown, the side of the baffle 4 away from the bottom wall 21 is provided with a plurality of fourth protrusions 14 extending along the width direction of the baffle 4, the maximum height of the fourth protrusions 14 is between 5mm and 10mm, the fourth protrusions 14 are too long to affect the assembly difficulty, and too short to limit the position, the first side 15 is provided with second protrusions 12 located outside the flow guide cover 2, the height direction is perpendicular to the direction of the baffle 4, the maximum height of the second protrusions 12 is between 10mm and 15mm, and the width only needs to ensure the strength. The second protrusions 12 limit the horizontal degree of freedom and ensure the stability of the electrical box in the vertical direction after installation. The first side 15 is also provided with two third protrusions 13 located on both sides of the heat dissipation piece 3, the length direction of the main body 1 is the length direction, the length of the third protrusions 13 is ensured to be between 35mm and 55mm, and a guide structure is arranged at the lower end of the third protrusions 13, the length of the third protrusions 13 is too short to ensure the assembly stability, and too long will lead to complex assembly. The assembly simplicity of the electrical box on the partition plate is ensured, and the stability of the electrical box in the horizontal direction after installation is also ensured. The third protrusions 13 are slightly larger than the first protrusions 11 in size, and cooperate with the stepped structure limiting the position of the flow guide cover 2, that is, the second section 8, so that the assembly simplicity of the flow guide cover and the electrical box during assembly is ensured, and the freedom degrees of the flow guide cover in the front, back, left and right directions after placement are limited, and the stability of the assembly during subsequent screw connection of the flow guide cover and the electrical box is ensured.

[0046] The application also provides an air conditioner comprising the electrical box assembly, and further comprising a fan 10 and a compressor, for reference Figure 12 As shown, the second side 16 faces the compressor 24, and the first side 15 faces the fan 10. In the technical scheme, the fan 10 has an axial flow fan blade, and since the air pressure on the side of the compressor 24 is higher than that on the side of the axial flow fan blade in the air conditioner outdoor unit, air flows from the side of the compressor 24 to the side of the axial flow fan blade along the air duct in the flow guide cover, and at the same time, the heat on the main plate of the electrical box is taken away. The main plate 5 of the electrical box is located on the side of the main body 1 facing the compressor, that is, the first side 15, so that the rainwater on the fan 10 cannot directly contact the main plate 5.

[0047] The electrical box assembly of the application is applied to an air conditioner outdoor unit, a partition plate is arranged in the outdoor unit, the partition plate divides the space in the outdoor unit into two chambers, one chamber is a fan chamber, and one chamber is a compressor chamber, the electrical box assembly of the application is arranged on the partition plate, the air outlet 19 is connected with the fan chamber, and the air inlet is connected with the compressor chamber, the ground is a horizontal plane, the vertical direction is perpendicular to the ground, the main body 1 is perpendicular to the horizontal plane, and the axial direction of the axial flow fan is parallel to the horizontal plane.

[0048] In some embodiments, when the minimum distance between the baffle 4 and the fourth side wall 22 is a, the width of the second section 8 is b, the minimum distance between the third section 9 and the first side 15 is c, and the radial direction of the air inlet 19 is the horizontal direction, the horizontal distance between the main body and the outline of the fan blade is d, it satisfies c≤0.8d. In this technical solution, referring to FIG. 12, the horizontal distance between the electrical box installation position and the outline of the axial fan blade is d, that is, the horizontal distance between the first side 15 and the outline of the axial fan blade is d, and the requirement is c≤0.8d. When the size c=d, the flow guide cover interferes with the axial fan blade, the safety factor is 0.8, the fault tolerance of the structure is ensured, the size a can have a larger range of size design capability under the premise of structural safety. Figure 11

[0049] Those skilled in the art can easily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0050] The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. An electrical box assembly, characterized in that: include: The main body (1) is used to mount components, and the main body (1) has a first side (15) and a second side (16). A flow guide (2) is provided, wherein the main body (1) is inserted into the flow guide (2) from the opening end of the flow guide (2), the main body (1) is at least partially located inside the flow guide (2), there is a gap (17) between the main body (1) and the flow guide (2), an air inlet (19) is formed between the opening end of the flow guide (2) and the second side (16), and an air outlet (18) is formed between the opening end of the flow guide (2) and the first side (15). Airflow flows into the gap (17) from the air inlet (19) and flows out from the air outlet (18). The main body (1) is provided with a heat sink (3) on the part inside the air guide (2). The heat sink (3) is located on the first side (15). When the airflow flows into the gap (17), it can flow through the heat sink (3). The air guide (2) includes a third sidewall (20), a bottom wall (21) and a fourth sidewall (22). One side of the bottom wall (21) is connected to the third sidewall (20), and the other side is connected to the fourth sidewall (22). An air inlet (19) is formed between the end of the third sidewall (20) facing away from the bottom wall (21) and the second side (16). An air outlet (18) is formed between the end of the fourth sidewall (22) facing away from the bottom wall (21) and the first side (15). The bottom wall (21) is connected to the end of the main body (1) through a connector. A baffle (4) is provided on the first side (15). The baffle (4) is opposite to the end of the fourth side wall (22) that is away from the bottom wall (21), and an air outlet (18) is formed between the baffle (4) and the end of the fourth side wall (22) that is away from the bottom wall (21).

2. The electrical box assembly according to claim 1, characterized in that: The main body (1) has a first end (23) extending into the air guide (2), and a grille (6) is provided between the bottom wall (21) and the first end (23). One end of the grille (6) is provided on the bottom wall (21), and the other end is provided on the first end (23). The airflow in the gap (17) can flow through the grille (6).

3. The electrical box assembly according to claim 1, characterized in that: The fourth sidewall (22) includes a first segment (7), a second segment (8) and a third segment (9). The two ends of the second segment (8) are connected to the first segment (7) and the third segment (9) respectively. The end of the first segment (7) facing away from the second segment (8) is connected to the bottom wall (21) so that the bottom wall (21), the first segment (7), the second segment (8) and the third segment (9) are connected to form a stepped structure.

4. The electrical box assembly according to claim 3, characterized in that: The minimum distance between the baffle (4) and the fourth sidewall (22) is a, the width direction is perpendicular to the first side (15), the width of the second segment (8) is b, and the minimum distance between the third segment (9) and the first side (15) is c, which satisfies b≥1.2a and a≤0.5c.

5. The electrical box assembly according to claim 4, characterized in that: The value of a is greater than 10 mm.

6. The electrical box assembly according to claim 1, characterized in that: The bottom wall (21) has a first protrusion (11) on both sides. The first protrusion (11) extends toward the main body (1), with the direction of the bottom wall (21) toward the main body (1) as the length direction and the direction perpendicular to the first side (15) as the width direction. The length e of the first protrusion (11) is 20mm~40mm and the width f of the first protrusion (11) is 5mm-15mm.

7. An air conditioner, characterized in that: The electrical box assembly including any one of claims 1-6 further includes a fan (10) and a compressor (24), the second side (16) facing the compressor (24) and the first side (15) facing the fan (10).

8. The air conditioner according to claim 7, characterized in that: When the fourth sidewall (22) includes a first section (7), a second section (8) and a third section (9), the two ends of the second section (8) are respectively connected to the first section (7) and the third section (9), and the end of the first section (7) facing away from the second section (8) is connected to the bottom wall (21), so that the bottom wall (21), the first section (7), the second section (8) and the third section (9) are connected to form a stepped structure, the minimum distance between the baffle (4) and the fourth sidewall (22) is a, the direction perpendicular to the first side (15) is the width direction, the width of the second section (8) is b, the minimum distance between the third section (9) and the first side (15) is c, the radial direction of the air inlet (19) is the horizontal direction, and the horizontal distance between the main body and the blade outline of the fan (10) is d, which satisfies that c≤0.8d.

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