Electrical box and air conditioner

Abstract

The present application provides an electrical box and an air conditioner. An installation cavity is formed inside the main body of the electrical box, and a first air inlet and a first air outlet communicating with the installation cavity are provided on the main body of the electrical box. The main board assembly is installed in the installation cavity, the radiator is connected to the main board assembly and extends from the installation cavity to the outside of the main body of the electrical box. The air duct is provided on the main body of the electrical box and covers the radiator, and an air cavity is formed inside the air duct. A second air inlet and a second air outlet communicating with the air cavity are provided on the air duct, the radiator is located between the second air inlet and the second air outlet in the air cavity, and the second air outlet is connected to the first air outlet. The wind generating component is provided on the air duct and is used for generating an air flow in the air cavity. By adopting the technical solution of the present invention, the main board assembly can be cooled in two ways, achieving all-round temperature reduction of the main board assembly and improving the heat dissipation efficiency and heat dissipation amount of the electrical box.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and more particularly, to an electric box and an air conditioner. Background Art

[0002] With the improvement of the national living standard, air conditioners have become essential household appliances in home life. Among them, the electric box is one of the important components. The electric box component mainly consists of an electric box, an electric box cover, a radiator, and a control main board. The main board includes multiple electrical components such as IPM, IGBT, diodes, and rectifier bridges. When the temperature of these electrical components is too high, it will cause damage to the control main board. Therefore, the heat dissipation of the electric box is crucial.

[0003] Generally, the electric box is placed horizontally on the outdoor unit and straddles the middle partition of the outdoor unit, and is assembled in the air field side cavity and the compressor cavity. When the electric box is in use, only the air flow in the air field side cavity is used to dissipate heat from the radiator, and the actual heat dissipation effect is poor. Summary of the Invention

[0004] Embodiments of the present invention provide an electric box and an air conditioner to solve the technical problem of poor heat dissipation of the electric box in the prior art.

[0005] An embodiment of the present application provides an electric box, including: an electric box body, an installation cavity is formed in the electric box body, and a first air inlet and a first air outlet communicating with the installation cavity are opened on the electric box body; a main board assembly, installed in the installation cavity; a radiator, connected to the main board assembly and extending from the installation cavity to the outside of the electric box body; an air duct, disposed on the electric box body and covering the radiator, an air cavity is formed in the air duct, a second air inlet and a second air outlet communicating with the air cavity are opened on the air duct, the radiator is located between the second air inlet and the second air outlet in the air cavity, and the second air outlet is connected to the first air outlet; a wind power component, disposed on the air duct for generating an air flow in the air cavity.

[0006] In one embodiment, the first air inlet is opened at one end of the electric box body for communicating with the compressor cavity; the first air outlet is opened at the other end of the electric box body for communicating with the air field side cavity.

[0007] In one embodiment, the air duct is disposed along the length direction of the electric box body.

[0008] In one embodiment, the second air inlet is located at one end of the air duct for communicating with the compressor cavity; the second air outlet is opened at the other end of the air duct for communicating with the air field side cavity.

[0009] In one embodiment, a rectifying section is formed in the part of the air cavity between the radiator and the second air inlet, and the rectifying section is used to rectify the air flow entering from the air inlet.

[0010] In one embodiment, the rectifying section includes a first arc section located on one side of the air cavity and a second arc section opposite to the first arc section, and the first arc section and the second arc section are used to guide the air flow entering from the second air inlet to the radiator.

[0011] In one embodiment, a constriction part is formed in the rectifying section, and the constriction part is used to increase the flow velocity of the air flow.

[0012] In one embodiment, a first waterproof structure is formed at the first air outlet, and the first waterproof structure is used to block between the first air outlet, the radiator and the fan in the air field side cavity.

[0013] In one embodiment, the first waterproof structure is an arc-shaped shielding wall, which is bent towards the second air outlet.

[0014] In one embodiment, a second waterproof structure is further provided at the first air outlet, and the second waterproof structure is used to block between the radiator and the first air outlet.

[0015] In one embodiment, the second waterproof structure is a stepped retaining wall, and the opening of the stepped retaining wall is opposite to the first waterproof structure.

[0016] In one embodiment, the main board assembly divides the installation cavity into a heat dissipation cavity and a sealed cavity in the installation cavity. The pin surface of the main board assembly is located in the sealed cavity, and the electrical component mounting surface of the main board assembly is located in the heat dissipation cavity. The first air inlet and the first air outlet are connected to the heat dissipation cavity.

[0017] In one embodiment, the electrical box body includes a box body and a cover body provided on the box body. A heat dissipation cavity is formed between the box body and the main board assembly, and a sealed cavity is formed between the cover body and the main board assembly.

[0018] In one embodiment, the box body and the cover body are connected by a snap structure.

[0019] In one embodiment, the snap structure includes a convex buckle provided on the top of the box body and a groove provided on the bottom of the cover body, and the convex buckle is engaged with the groove.

[0020] In one embodiment, the wind power component is arranged in the air cavity.

[0021] In one embodiment, the wind power component is located at the second air inlet.

[0022] In one embodiment, the wind power component is a perfusion fan.

[0023] The present application also provides an air conditioner, including an electrical box, which is the above-mentioned electrical box.

[0024] In one embodiment, the air conditioner includes an outdoor unit. A wind field side cavity and a compressor cavity are formed on the outdoor unit. The electrical box is arranged between the wind field side cavity and the compressor cavity. The first air inlet and the second air inlet are connected to the compressor cavity, and the first air outlet and the second air outlet are connected to the wind field side cavity.

[0025] In one embodiment, a ventilation port connected to the compressor cavity is provided on the outdoor unit, and the ventilation port is opposite to the first air inlet and the second air inlet.

[0026] In the above embodiment, an air flow is generated in the air cavity by a wind power component, and the air flow flows from the second air inlet along the air cavity to the second air outlet. During this process, the radiator in the air cavity is cooled. Since the radiator is connected to the main board assembly, the main board assembly can be effectively cooled by the radiator. Since the second air outlet is connected to the first air outlet, after the air flow blows out from the second air outlet, a negative pressure will be formed at the second air outlet, so that the air flow can be inhaled from the first air inlet into the installation cavity and then blown out from the second air outlet. Thus, the main board assembly in the installation cavity can be cooled. In this way, by adopting the technical solution of the present invention, the main board assembly can be cooled in two ways, achieving all-round cooling of the main board assembly and improving the heat dissipation efficiency and heat dissipation amount of the electrical box. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0028] Figure 1 is a perspective three-dimensional structural schematic diagram of an embodiment of the electrical box according to the present invention;

[0029] Figure 2 is Figure 1 the cross-sectional structural schematic diagram of the electrical box;

[0030] Figure 3 is Figure 1 the front three-dimensional structural schematic diagram of the electrical box and its partial enlarged view;

[0031] Figure 4 is Figure 3 the cross-sectional structural schematic diagram of the electrical box;

[0032] Figure 5 is Figure 2 the structural schematic diagram of the electrical box from another angle and its partial enlarged view;

[0033] Figure 6 isFigure 2 Schematic cross-sectional structure diagram of the box body of the electrical box;

[0034] Figure 7 It is a schematic structural diagram of an embodiment of an air conditioner according to the present invention. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the implementation manners and the accompanying drawings. Here, the illustrative implementation manners of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0036] Figure 1 and Figure 2 FIG. shows an embodiment of the electrical box of the present invention. The electrical box includes an electrical box main body 10, a main board assembly 20, a radiator 30, an air duct 40, and a wind power component 50. An installation cavity is formed in the electrical box main body 10. A first air inlet 11 and a first air outlet 12 communicating with the installation cavity are formed on the electrical box main body 10. The main board assembly 20 is installed in the installation cavity. The radiator 30 is connected to the main board assembly 20 and extends from the installation cavity to the outside of the electrical box main body 10. The air duct 40 is provided on the electrical box main body 10 and covers the radiator 30. An air cavity is formed in the air duct 40. A second air inlet 41 and a second air outlet 42 communicating with the air cavity are formed on the air duct 40. The radiator 30 is located between the second air inlet 41 and the second air outlet 42 in the air cavity. The second air outlet 42 is connected to the first air outlet 12. The wind power component 50 is provided on the air duct 40 and is used to generate an air flow in the air cavity.

[0037] Applying the technical solution of the present invention, an air flow is generated in the air cavity by the wind power component 50, and the air flow flows from the second air inlet 41 along the air cavity to the second air outlet 42. During this process, the radiator 30 in the air cavity is cooled. Since the radiator 30 is connected to the main board assembly 20, the main board assembly 20 can be effectively cooled by the radiator 30. Since the second air outlet 42 is connected to the first air outlet 12, when the air flow blows out from the second air outlet 42, a negative pressure will be formed at the second air outlet 42, and then the air flow can be sucked from the first air inlet 11 into the installation cavity and blown out from the second air outlet 42. Thus, the main board assembly 20 in the installation cavity can be cooled. In this way, by adopting the technical solution of the present invention, the main board assembly 20 can be cooled in two ways, achieving all-round cooling of the main board assembly 20, and improving the heat dissipation efficiency and heat dissipation amount of the electrical box.

[0038] Optionally, as Figure 1 shown, in the technical solution of this embodiment, the wind power component 50 is arranged in the air cavity. More preferably, the wind power component 50 is located at the second air inlet 41.

[0039] As other alternative embodiments, the wind component 50 can also be installed at the second air inlet 41 or the second air outlet 42 to generate an air flow.

[0040] Preferably, in the technical solution of this embodiment, the above-mentioned wind component 50 is a perfusion fan. As other alternative embodiments, the wind component 50 can also be an axial flow fan.

[0041] As Figure 4 and Figure 7 shown, in the technical solution of this embodiment, the first air inlet 11 is opened at one end of the electric box body 10 and is used to communicate with the compressor cavity 62. The first air outlet 12 is opened at the other end of the electric box body 10 and is used to communicate with the air field side cavity 61. When in use, when the fan in the air field side cavity 61 generates an air flow, a negative pressure will be formed in the air field side cavity 61, and then a suction force can be generated on the first air outlet 12 to allow the air flow to be sucked from the compressor cavity 62 into the first air inlet 11.

[0042] As Figure 3 and Figure 4 shown, the air duct 40 is arranged along the length direction of the electric box body 10 to adapt to the layout of the above-mentioned first air inlet 11 and first air outlet 12. Similarly, it is also suitable for installation on the outdoor unit. More preferably, the second air inlet 41 is located at one end of the air duct 40 and is used to communicate with the compressor cavity 62; the second air outlet 42 is opened at the other end of the air duct 40 and is used to communicate with the air field side cavity 61. Similarly, when the fan in the air field side cavity 61 generates an air flow during use, a negative pressure will be formed in the air field side cavity 61, and then a suction force can be generated on the second air outlet 42 to allow the air flow to be sucked from the compressor cavity 62 into the second air inlet 41.

[0043] As Figure 4 shown, in order to improve the heat dissipation effect of the radiator 30, in the technical solution of this embodiment, a rectifying section 43 is formed in the part of the air cavity between the radiator 30 and the second air inlet 41, and the rectifying section 43 is used to rectify the air flow entering from the air inlet. By rectifying the air flow entering from the air inlet through the rectifying section 43, the flow rate of the air flow can be increased, and the air flow can also be more targeted to blow towards the radiator 30. Optionally, as Figure 4 shown, the rectifying section 43 includes a first arc section on one side of the air cavity and a second arc section opposite to the first arc section, and the first arc section and the second arc section are used to guide the air flow entering from the second air inlet 41 to the radiator 30. Through the cooperation of the first arc section and the second arc section, the air flow can be guided more smoothly, reducing the generation of noise.

[0044] As Figure 4As shown, preferably, a necked-down portion 431 is formed in the rectifying section 43. During use, the wind pressure can be increased through the necked-down portion 431, thereby increasing the flow velocity of the air current, so that the air current can more efficiently carry away the heat on the radiator 30.

[0045] By adopting the technical solution of the present invention, the cross-flow fan can efficiently transfer the air current. By adjusting the rotational speed of the cross-flow fan or adjusting the profile lines of the first arc section and the second arc section, the regulation of the wind field and the air volume can be achieved. Furthermore, it can be applied to models with different energy segments, realizing the high efficiency of heat dissipation and the wide range of use, achieving generalization, and saving the project development cost.

[0046] When the existing electrical box is in use, water droplets in the wind field side cavity are likely to enter the electrical box, which is likely to cause accidents such as main board short circuits. To avoid this technical problem, in the technical solution of this embodiment, a first waterproof structure 121 is formed at the first air outlet 12. The first waterproof structure 121 is used to block between the first air outlet 12, the radiator 30, and the fan in the wind field side cavity 61. In this way, it can prevent the fan in the wind field side cavity 61 from throwing water droplets onto the radiator 30 or into the first air outlet 12, thereby avoiding accidents such as main board short circuits. Preferably, in the technical solution of this embodiment, the first waterproof structure 121 is an arc-shaped shielding wall that bends towards the second air outlet 42. The arc-shaped shielding wall can guide the air current at the first air outlet 12 to flow out from the second air outlet 42.

[0047] As Figure 4 and Figure 6 shown, more preferably, a second waterproof structure 122 is further provided at the first air outlet 12. The second waterproof structure 122 is used to block between the radiator 30 and the first air outlet 12. In this way, the second waterproof structure 122 can prevent the water droplets formed on the radiator 30 from entering the space where the main board assembly 20 is located through the first air outlet 12, further avoiding accidents such as main board short circuits. Preferably, as Figure 3 and Figure 4 shown, the second waterproof structure 122 is a stepped retaining wall, and the opening of the stepped retaining wall is opposite to the first waterproof structure 121. In this way, the stepped retaining wall and the first waterproof structure 121 can completely achieve the waterproof effect on the first air outlet 12.

[0048] By adopting the electrical box of the present invention, it can effectively prevent water droplets or water vapor from entering the space where the main board assembly 20 is located, eliminating the hidden danger of damage to the main board assembly 20 caused thereby.

[0049] As Figure 4As shown, in the technical solution of this embodiment, the main board assembly 20 divides the installation cavity into a heat dissipation cavity 15 and a sealed cavity 16 within the installation cavity. The pin surface of the main board assembly 20 is located within the sealed cavity 16, and the electrical component mounting surface of the main board assembly 20 is located within the heat dissipation cavity 15. The first air inlet 11 and the first air outlet 12 are connected to the heat dissipation cavity 15. The flowing air in the heat dissipation cavity 15 can effectively dissipate heat from the electrical components mounted on the electrical component mounting surface of the main board assembly 20. Since the pin surface of the main board assembly 20 does not require heat dissipation, placing this pin surface within the sealed cavity 16 can effectively prevent bugs from entering the pin surface and causing a short - circuit accident.

[0050] Optionally, the above - mentioned electrical components can be IPM, IGBT, diodes, rectifier bridges, etc.

[0051] As Figure 5 shown, preferably, in the technical solution of this embodiment, the electrical box body 10 includes a box body 13 and a cover body 14 provided on the box body 13. A heat dissipation cavity 15 is formed between the box body 13 and the main board assembly 20, and a sealed cavity 16 is formed between the cover body 14 and the main board assembly 20. To make the connection between the box body 13 and the cover body 14 more convenient and tighter, the box body 13 and the cover body 14 are connected by a snap - fit structure. Optionally, the snap - fit structure includes a convex buckle 131 provided on the top of the box body 13 and a groove 141 provided on the bottom of the cover body 14, and the convex buckle 131 is engaged with the groove 141. As another optional implementation, the convex buckle 131 can also be provided on the cover body 14 and the groove 141 can be provided on the box body 13.

[0052] As Figure 7 shown, the present invention also provides an air conditioner, which includes the above - mentioned electrical box. The air conditioner adopting the above - mentioned electrical box can achieve more efficient and stable heat dissipation of the electrical box, thereby ensuring the stability of the air conditioner circuit system. The air conditioner includes an outdoor unit 60, on which a wind field side cavity 61 and a compressor cavity 62 are formed, and the electrical box is arranged between the wind field side cavity 61 and the compressor cavity 62. The first air inlet 11 and the second air inlet 41 are connected to the compressor cavity 62, and the first air outlet 12 and the second air outlet 42 are connected to the wind field side cavity 61.

[0053] As a preferred implementation, as Figure 7 shown, the outdoor unit 60 is provided with a ventilation port 63 connected to the compressor cavity 62, and the ventilation port 63 is opposite to the first air inlet 11 and the second air inlet 41. By providing the ventilation port 63 in the compressor cavity 62 and making the ventilation port 63 opposite to the first air inlet 11 and the second air inlet 41, the cooler fresh air in the atmosphere can directly enter the first air inlet 11 and the second air inlet 41 through the ventilation port 63, so as to achieve more efficient heat dissipation of the electrical box.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electrical appliance box, characterized in that: include: An electrical box body (10), wherein a mounting cavity is formed in the electrical box body (10), and a first air inlet (11) and a first air outlet (12) communicating with the mounting cavity are provided on the electrical box body (10); A mainboard assembly (20) is installed in the installation cavity; A heat sink (30) is connected to the mainboard assembly (20) and extends from the mounting cavity to the outside of the electrical box body (10); An air duct (40) is provided on the electrical box body (10) and covers the radiator (30), an air cavity is formed in the air duct (40), a second air inlet (41) and a second air outlet (42) communicating with the air cavity are provided on the air duct (40), the radiator (30) is located between the second air inlet (41) and the second air outlet (42) in the air cavity, and the second air outlet (42) is communicated with the first air outlet (12); A wind force component (50) is provided on the air duct (40) and is used to generate airflow in the air cavity; A rectifying section (43) is formed in the portion of the air cavity between the radiator (30) and the second air inlet (41), and the rectifying section (43) is used to rectify the airflow entering from the air inlet; The rectifying section (43) comprises a first arc section located on one side of the air cavity and a second arc section opposite to the first arc section, wherein the first arc section and the second arc section are used to guide the airflow entering from the second air inlet (41) to the radiator (30).

2. The electrical box according to claim 1, characterized in that: The first air inlet (11) is provided at one end of the electrical box body (10) and is used to communicate with the compressor cavity (62); the first air outlet (12) is provided at the other end of the electrical box body (10) and is used to communicate with the wind farm side cavity (61).

3. The electrical box according to claim 1, characterized in that: The air duct (40) is arranged along the length direction of the electrical box body (10).

4. The electrical box according to claim 1, characterized in that: The second air inlet (41) is located at one end of the air duct (40) and is used to communicate with the compressor cavity (62); the second air outlet (42) is opened at the other end of the air duct (40) and is used to communicate with the wind farm side cavity (61).

5. The electrical appliance box according to claim 1, characterized in that: A constricted portion (431) is formed in the rectifying section (43), and the constricted portion (431) is used to increase the flow rate of the airflow.

6. The electrical appliance box according to claim 1, characterized in that: A first waterproof structure (121) is formed at the first air outlet (12), and the first waterproof structure (121) is used to shield the first air outlet (12), the radiator (30), and the fan of the wind farm side cavity (61).

7. The electrical appliance box according to claim 6, characterized in that: The first waterproof structure (121) is an arc-shaped shielding wall, which is curved toward the second air outlet (42).

8. The electrical appliance box according to claim 6, characterized in that: A second waterproof structure (122) is also provided at the first air outlet (12), and the second waterproof structure (122) is used to block between the radiator (30) and the first air outlet (12).

9. The electrical appliance box according to claim 8, characterized in that: The second waterproof structure (122) is a stepped retaining wall, and an opening of the stepped retaining wall is opposite to the first waterproof structure (121).

10. The electrical appliance box according to claim 1, characterized in that: The mainboard assembly (20) divides the installation cavity into a heat dissipation cavity (15) and a sealing cavity (16) in the installation cavity; the pin surface of the mainboard assembly (20) is located in the sealing cavity (16); the electrical component installation surface of the mainboard assembly (20) is located in the heat dissipation cavity (15); and the first air inlet (11) and the first air outlet (12) are connected to the heat dissipation cavity (15).

11. The electrical appliance box according to claim 10, characterized in that: The electrical box body (10) comprises a box body (13) and a cover body (14) arranged on the box body (13); the heat dissipation cavity (15) is formed between the box body (13) and the mainboard assembly (20); and the sealed cavity (16) is formed between the cover body (14) and the mainboard assembly (20).

12. The electrical appliance box according to claim 11, characterized in that: The box body (13) and the cover body (14) are connected via a snap-fit structure.

13. The electrical appliance box according to claim 12, characterized in that: The buckle structure comprises a convex buckle (131) arranged on the top of the box body (13), and a groove (141) arranged on the bottom of the cover body (14), and the convex buckle (131) and the groove (141) are engaged with each other.

14. The electrical appliance box according to claim 1, characterized in that: The wind force component (50) is arranged in the wind cavity.

15. The electrical appliance box according to claim 1, characterized in that: The wind force component (50) is located at the second air inlet (41).

16. The electrical appliance box according to claim 1, characterized in that: The wind force component (50) is an irrigation fan.

17. An air conditioner, comprising an electrical box, characterized in that: The electrical appliance box is the electrical appliance box according to any one of claims 1 to 16.

18. The air conditioner according to claim 17, wherein: The air conditioner comprises an outdoor unit (60), a wind farm side cavity (61) and a compressor cavity (62) are formed on the outdoor unit (60), the electrical box is arranged between the wind farm side cavity (61) and the compressor cavity (62), the first air inlet (11) and the second air inlet (41) are connected to the compressor cavity (62), and the first air outlet (12) and the second air outlet (42) are connected to the wind farm side cavity (61).

19. The air conditioner according to claim 18, wherein: The external unit (60) is provided with a vent (63) communicating with the compressor cavity (62), and the vent (63) is opposite to the first air inlet (11) and the second air inlet (41).

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