Electric control box with heat dissipation structure

Abstract

The utility model relates to the technical field of electric control box heat management, in particular to an electric control box with a heat dissipation structure. The electric cabinet with the heat dissipation structure comprises a shell, a flow equalizing plate and an air deflector. Wherein the shell is provided with a containing cavity, an electronic element is arranged in the containing cavity, and an air inlet is formed in the shell. The flow equalizing plate is arranged in the shell, and a plurality of through holes are formed in the flow equalizing plate. The air guide plate is arranged in the shell, an air channel is formed between the air guide plate and the flow equalizing plate, and the flow equalizing plate is located between the containing cavity and the air channel; the air channel is communicated with the containing cavity through the through hole, and the air channel is communicated with the air inlet. The air guide plate is provided with a plurality of step portions, the air channel is provided with a near-end area and a far-end area, the near-end area is close to the air inlet, air flow in the air channel flows to the far-end area from the near-end area, and the distance between the step portions and the flow equalizing plate is gradually decreased in the direction from the near-end area to the far-end area. The heat dissipation uniformity of the electric cabinet with the heat dissipation structure can be improved, and the heat dissipation performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology for electrical control boxes, and in particular to an electrical control box with a heat dissipation structure. Background Technology

[0002] Currently, most electrical control boxes employ an internal air duct system for heat dissipation, utilizing an external fan to blow air through the duct. However, the cross-sectional area of ​​the existing air ducts is constant, making it unsuitable for varying airflow and pressure requirements. This results in excessive airflow near the duct and insufficient airflow at the far end, leading to uneven heat dissipation and reduced cooling performance.

[0003] Therefore, there is an urgent need to design an electrical control box with a heat dissipation structure to solve the above technical problems. Utility Model Content

[0004] The purpose of this invention is to provide an electrical control box with a heat dissipation structure to improve the uniformity of heat dissipation and enhance heat dissipation performance.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides an electrical control box with a heat dissipation structure, comprising:

[0007] The housing has a receiving chamber in which electronic components are disposed, and an air inlet is provided on the housing;

[0008] A flow equalization plate is disposed inside the housing, and the flow equalization plate is provided with a plurality of through holes;

[0009] An air guide plate is disposed inside the housing, and an air duct is formed between the air guide plate and the flow equalization plate. The flow equalization plate is located between the accommodating chamber and the air duct. The air duct communicates with the accommodating chamber through the through hole and is also connected to the air inlet.

[0010] The air guide plate has multiple stepped sections, and the air duct has a near-end area and a far-end area. The near-end area is close to the air inlet, and the airflow in the air duct flows from the near-end area to the far-end area. Along the direction from the near-end area to the far-end area, the distance between the stepped section and the flow equalization plate gradually decreases.

[0011] As an optional technical solution for an electrical control box with a heat dissipation structure, several through holes are evenly distributed on the flow equalization plate.

[0012] As an optional technical solution for an electrical control box with a heat dissipation structure, an air outlet is provided on the top of the housing, the air outlet is connected to the accommodating chamber, and the air inlet is provided on the side wall of the housing.

[0013] As an optional technical solution for an electrical control box with a heat dissipation structure, the projected area of ​​the air outlet is smaller than the projected area of ​​the accommodating chamber along the height direction of the electrical control box with the heat dissipation structure.

[0014] As an optional technical solution for an electrical control box with a heat dissipation structure, two flow equalization plates and two air guide plates are provided, and the flow equalization plates and the air guide plates are arranged in a one-to-one correspondence; the two flow equalization plates are arranged symmetrically about the axis of the housing, and the two air guide plates are arranged symmetrically about the axis of the housing.

[0015] As an optional technical solution for an electrical control box with a heat dissipation structure, two air inlets are provided, and each air inlet corresponds to one of the air ducts.

[0016] As an optional technical solution for an electrical control box with a heat dissipation structure, the air inlet is provided with a louver assembly, which is movably connected to the side wall of the air inlet.

[0017] As an optional technical solution for an electrical control box with a heat dissipation structure, the through hole is one of the following shapes: circular, elliptical, square, or triangular.

[0018] As an optional technical solution for an electrical control box with a heat dissipation structure, the housing, the flow equalization plate, and the air guide plate are all metal parts.

[0019] As an optional technical solution for an electrical control box with a heat dissipation structure, the air guide plate is bonded or snapped to the inner wall of the housing; the flow equalization plate is bonded or snapped to the inner wall of the housing.

[0020] The beneficial effects of this utility model include at least the following:

[0021] This utility model provides an electrical control box with a heat dissipation structure, which includes a shell, a flow equalization plate, and an air guide plate. The shell has a receiving chamber containing electronic components, and an air inlet is located on the shell. The flow equalization plate is disposed within the shell and has several through holes. The air guide plate is disposed within the shell, forming an air duct between the air guide plate and the flow equalization plate. The flow equalization plate is located between the receiving chamber and the air duct; the air duct communicates with the receiving chamber through the through holes and with the air inlet. The air guide plate has multiple stepped sections, and the air duct has a proximal section and a distal section. The proximal section is close to the air inlet, and the airflow within the air duct flows from the proximal section to the distal section. Along the direction from the proximal section to the distal section, the distance between the stepped sections and the flow equalization plate gradually decreases. In other words, the cross-sectional area of ​​the air duct gradually decreases from the near end to the far end, thereby increasing the air pressure in the far end and compensating for the air pressure attenuation caused by the increased airflow length. This prevents a decrease in airflow velocity in the far end, suppresses turbulence, balances local air pressure differences, and improves the heat dissipation uniformity of the control box with a heat dissipation structure, thus enhancing its heat dissipation performance. Simultaneously, the air duct connects to the housing chamber through the through-holes in the flow equalization plate, distributing low-temperature airflow to the surfaces of electronic components within the housing chamber, improving heat exchange efficiency and temperature field uniformity. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the electrical control box with heat dissipation structure provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the electrical control box with heat dissipation structure provided in this embodiment of the utility model;

[0025] Figure 3 This is a top view of the electrical control box with a heat dissipation structure provided in an embodiment of this utility model;

[0026] Figure 4 This is a side view of the electrical control box with a heat dissipation structure provided in an embodiment of the present utility model;

[0027] Figure 5 This is a simulation diagram of the thermal radiation distribution of the electrical control box in existing technology;

[0028] Figure 6This is a simulation diagram of the thermal radiation distribution of an electrical control box with a heat dissipation structure provided in an embodiment of this utility model.

[0029] Figure Labels

[0030] 10. Housing; 11. Receiving chamber; 12. Electronic components; 13. Air inlet; 14. Air duct; 141. Proximal area; 142. Distal area; 15. Air outlet;

[0031] 20. Flow equalization plate; 21. Through hole;

[0032] 30. Air guide plate; 31. Step section. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] This embodiment provides an electrical control box with a heat dissipation structure, which improves the uniformity of heat dissipation and enhances heat dissipation performance.

[0041] like Figures 1-4 As shown, the electrical control box with a heat dissipation structure mainly includes a housing 10, a flow equalization plate 20, and an air guide plate 30. The housing 10 has a receiving chamber 11, within which electronic components 12 are housed, and an air inlet 13 is provided on the housing 10. The flow equalization plate 20 is disposed within the housing 10 and has several through holes 21. The air guide plate 30 is disposed within the housing 10, forming an air duct 14 between the air guide plate 30 and the flow equalization plate 20. The flow equalization plate 20 is located between the receiving chamber 11 and the air duct 14; the air duct 14 communicates with the receiving chamber 11 through the through holes 21 and is also connected to the air inlet 13. The air guide plate 30 has multiple stepped sections 31, and the air duct 14 has a near-end region 141 and a far-end region 142. The near-end region 141 is close to the air inlet 13, and the airflow in the air duct 14 flows from the near-end region 141 to the far-end region 142. Along the direction from the near-end region 141 to the far-end region 142, the distance between the stepped section 31 and the flow equalization plate 20 gradually decreases.

[0042] Based on the above design, in this embodiment, the distance between the stepped portion 31 of the air guide plate 30 and the flow equalization plate 20 gradually decreases along the direction from the near end region 141 to the far end region 142. That is, the cross-sectional area of ​​the air duct 14 gradually decreases from the near end region 141 to the far end region 142, thereby increasing the wind pressure in the far end region 142, compensating for the wind pressure attenuation problem in the far end region 142 caused by the increase in the length of the air path, avoiding the decrease in airflow velocity in the far end region 142, thereby suppressing turbulence and balancing local wind pressure differences, and thus improving the heat dissipation uniformity of the electrical control box with heat dissipation structure and improving heat dissipation performance. At the same time, the air duct 14 is connected to the accommodating chamber 11 through the through hole 21 of the flow equalization plate 20, uniformly distributing the low-temperature airflow to the surface of the electronic components 12 in the accommodating chamber 11, improving heat exchange efficiency and temperature field uniformity.

[0043] Understandable, Figures 3-4 The arrow in the diagram indicates the direction of airflow, and a fan (not shown in the diagram) is installed at the air inlet 13.

[0044] In some optional embodiments, a plurality of through holes 21 are evenly distributed on the flow equalization plate 20. The air volume distribution is achieved by the evenly distributed through holes 21, avoiding excessive air volume in local areas (such as the near-end region 141) or insufficient air volume (such as the far-end region 142) due to the concentration of through holes 21. At the same time, the evenly distributed through holes 21 can also reduce the processing complexity and improve the processing efficiency.

[0045] like Figure 1 and Figure 4 As shown, an air outlet 15 is provided on the top of the housing 10, and the air outlet 15 communicates with the accommodating chamber 11. An air inlet 13 is provided on the side wall of the housing 10. That is to say, the height of the air outlet 15 is higher than the height of the air inlet 13. By utilizing the natural rising characteristic of hot air, the hot air is accelerated to be discharged in a directional manner, avoiding the stagnation of hot air or interference with the electrical wiring at the top, reducing airflow path turbulence, and improving heat dissipation efficiency.

[0046] Furthermore, in this embodiment, along the height direction of the electrical control box with the heat dissipation structure, the projected area of ​​the air outlet 15 is smaller than the projected area of ​​the accommodating chamber 11. Reducing the area of ​​the air outlet 15 can enhance the hot air exhaust speed, form a stable unidirectional flow path, and at the same time prevent external airflow backflow, further optimizing heat exchange efficiency.

[0047] like Figures 1-4 As shown, in this embodiment, there are two flow equalization plates 20 and two air guide plates 30, and the flow equalization plates 20 and the air guide plates 30 are arranged in a one-to-one correspondence; the two flow equalization plates 20 are arranged symmetrically about the axis of the housing 10, and the two air guide plates 30 are arranged symmetrically about the axis of the housing 10. There are also two air inlets 13, and the air inlets 13 are arranged in a one-to-one correspondence with the air ducts 14.

[0048] The airflow pressure on both sides is balanced by the symmetrically distributed air guide plates 30 and flow equalization plates 20, eliminating the local eddy phenomenon caused by the unbalanced airflow on one side, reducing the temperature field difference, and improving the heat dissipation uniformity of the electrical control box with heat dissipation structure.

[0049] In addition, this embodiment adopts a design of dual air inlets 13 and dual air ducts 14, so that each air inlet 13 corresponds to an independent air duct 14, ensuring balanced airflow on both sides and avoiding heat dissipation blind spots caused by insufficient airflow on one side.

[0050] In some optional embodiments, the air inlet 13 is provided with a louver assembly (not shown in the figure), which is movably connected to the side wall of the air inlet 13. The louver assembly can adjust its opening angle according to the load status of the electrical control box; for example, it increases the air intake under high load and decreases the air intake under low load, optimizing the balance between energy consumption and heat dissipation efficiency. At the same time, the louver assembly can prevent external foreign objects from entering the housing, improving the sealing performance of the housing 10 and making it suitable for harsh environments such as dust or humidity.

[0051] In some alternative implementations, the through hole 21 can be one of a circle, an ellipse, a square, or a triangle.

[0052] Specifically, when the through-hole 21 is designed as a circle, it exhibits the lowest air resistance, making it suitable for areas requiring high-speed airflow. When the through-hole 21 is designed as a square or triangular shape, it increases airflow turbulence and enhances local heat dissipation, making it suitable for areas with high heat radiation. When the through-hole 21 is designed as an ellipse, it balances air resistance and turbulence, adapting to areas with medium to low heat loads. Furthermore, different shapes of through-holes 21 can be combined to precisely allocate airflow to match the differences in heat radiation distribution on the electronic control board, achieving dynamic heat dissipation optimization.

[0053] In some alternative embodiments, the housing 10, the flow equalization plate 20, and the air guide plate 30 are all made of metal. The metal material can absorb some heat and dissipate it through the surface of the housing 10, thus assisting the air-cooling system in improving overall heat dissipation efficiency. At the same time, metal components have high-temperature resistance and deformation resistance, making them suitable for high-vibration or impact environments.

[0054] For example, the housing 10, the flow equalization plate 20, and the air guide plate 30 can all be made of materials such as stainless steel, aluminum alloy, and copper alloy.

[0055] In some optional embodiments, the air guide plate 30 is bonded or snap-fitted to the inner wall of the housing 10; the flow equalization plate 20 is bonded or snap-fitted to the inner wall of the housing 10, thereby achieving a detachable connection between the air guide plate 30 and the housing 10, and between the flow equalization plate 20 and the housing 10, reducing subsequent maintenance costs. Furthermore, the structure of the air guide plate 30 and the flow equalization plate 20 can be adjusted according to the layout of the electronic control components, improving flexibility.

[0056] like Figures 5-6 As shown, by comparing the thermal radiation simulation diagrams before optimization (existing technology) and after optimization (this application), the following conclusions can be drawn, specifically the improvement in temperature field uniformity.

[0057] Before optimization: The temperature distribution showed significant differences, with obvious high-temperature hotspots in some areas (concentrated in red areas), and the retention of hot air led to heat accumulation.

[0058] After optimization: along the airflow direction, the distance between the stepped part 31 of the air guide plate 30 and the flow equalization plate 20 gradually decreases, so that the cross-sectional area of ​​the air duct 14 gradually decreases from the near end area 141 to the far end area 142, the range of high temperature hot spots is greatly reduced, and the overall temperature distribution tends to be uniform (the color transition is smooth), which verifies the effectiveness of wind pressure balance and turbulence suppression.

[0059] The simulation results intuitively demonstrate the effect of the gradient design of the cross-sectional area of ​​the air duct 14 in this embodiment on improving heat dissipation efficiency and temperature field uniformity, especially in terms of temperature control in high heat load areas.

[0060] Optionally, in this embodiment, ANSYS Fluent, COMSOL Multiphysics, or OpenFOAM simulation software can be used to perform CFD (Computational Fluid Dynamics) simulation on the electrical control box with a heat dissipation structure.

[0061] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0062] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An electrical control box with a heat dissipation structure, characterized in that, include: The housing (10) has a receiving chamber (11) in which electronic components (12) are disposed, and an air inlet (13) is provided on the housing (10). A flow equalization plate (20) is disposed inside the housing (10), and the flow equalization plate (20) is provided with a plurality of through holes (21); An air guide plate (30) is disposed inside the housing (10). An air duct (14) is formed between the air guide plate (30) and the flow equalization plate (20). The flow equalization plate (20) is located between the accommodating chamber (11) and the air duct (14). The air duct (14) communicates with the accommodating chamber (11) through the through hole (21) and is also connected to the air inlet (13). The air guide plate (30) has multiple stepped portions (31), and the air duct (14) has a near-end region (141) and a far-end region (142). The near-end region (141) is close to the air inlet (13), and the airflow in the air duct (14) flows from the near-end region (141) to the far-end region (142). Along the direction from the near-end region (141) to the far-end region (142), the distance between the stepped portion (31) and the flow equalization plate (20) gradually decreases.

2. The electrical control box with a heat dissipation structure according to claim 1, characterized in that, Several through holes (21) are evenly distributed on the flow equalization plate (20).

3. The electrical control box with a heat dissipation structure according to claim 1, characterized in that, The top of the housing (10) is provided with an air outlet (15), which is connected to the accommodating chamber (11), and the air inlet (13) is provided on the side wall of the housing (10).

4. The electrical control box with a heat dissipation structure according to claim 3, characterized in that, Along the height direction of the electrical control box with heat dissipation structure, the projected area of ​​the air outlet (15) is smaller than the projected area of ​​the accommodating chamber (11).

5. The electrical control box with a heat dissipation structure according to claim 1, characterized in that, The flow equalization plate (20) and the air guide plate (30) are both set in pairs, and the flow equalization plate (20) and the air guide plate (30) are set in a one-to-one correspondence; the two flow equalization plates (20) are symmetrically arranged about the axis of the housing (10), and the two air guide plates (30) are symmetrically arranged about the axis of the housing (10).

6. The electrical control box with a heat dissipation structure according to claim 5, characterized in that, The air inlet (13) is configured as two, and the air inlet (13) is configured in a one-to-one correspondence with the air duct (14).

7. The electrical control box with a heat dissipation structure according to any one of claims 1-6, characterized in that, The air inlet (13) is provided with a louver assembly, which is movably connected to the side wall of the air inlet (13).

8. The electrical control box with a heat dissipation structure according to any one of claims 1-6, characterized in that, The through hole (21) is one of the following: circular, elliptical, square, or triangular.

9. The electrical control box with a heat dissipation structure according to any one of claims 1-6, characterized in that, The housing (10), the flow equalization plate (20), and the air guide plate (30) are all metal parts.

10. The electrical control box with a heat dissipation structure according to any one of claims 1-6, characterized in that, The air guide plate (30) is bonded or snapped to the inner wall of the housing (10); the flow equalization plate (20) is bonded or snapped to the inner wall of the housing (10).

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