A distribution box cooling system

Abstract

The utility model discloses a kind of distribution box cooling systems, belong to distribution box heat dissipation technical field, comprising: inner box and outer box;The inner box is used to install required electrical components, the inner box is installed in the outer box, and spacing is left between the two, the bottom and top of outer box are provided with fan;Wind shield, the wind shield is spaced apart and is set on the inner wall of outer box;Air deflector, the wind shield is spaced apart and is set on the outer wall of inner box, and wind shield of the same layer is located directly below wind shield;The connecting position of the air deflector and the inner box is provided with air inlet hole;The application is through inner box and outer box double-layer layout, cooperate bottom air inlet, top air outlet axial flow fan, form the forced convection channel from top to bottom, and the heat dissipation efficiency is greatly improved compared with conventional simple fan structure heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for distribution boxes, specifically a cooling system for distribution boxes. Background Technology

[0002] As the core equipment for power distribution, the electrical components inside the distribution box generate a lot of heat during operation. Traditional distribution boxes usually rely on natural heat dissipation or simple fans for cooling, but in high-temperature environments or under high loads, the heat dissipation efficiency is insufficient, which can easily lead to component aging, failure, or even safety accidents.

[0003] Therefore, a high-efficiency heat dissipation cooling system for electrical distribution boxes needs to be designed. Utility Model Content

[0004] To address the problems of existing technologies, this utility model provides a power distribution box cooling system, comprising: Inner box and outer box; The inner enclosure is used to install the required electrical components. The inner enclosure is installed inside the outer enclosure with a gap between them. Fans are provided at the bottom and top of the outer enclosure. Wind deflectors are spaced apart on the inner wall of the outer casing; The wind deflector is spaced apart on the outer wall of the inner box, and the wind deflectors at the same level are located directly below the wind deflector. An air inlet is provided at the connection point between the air guide plate and the inner box.

[0005] Furthermore, the inner casing is made of copper and carbon fiber alloy, and its outer surface is provided with heat sinks at intervals. The heat sinks are parallel to the top of the inner casing and are located between adjacent air inlets.

[0006] Furthermore, the wind deflector is inclined downward and has a ring structure, and a slit is left between the wind deflector and the inner box, the slit being between 3mm and 5mm.

[0007] Furthermore, the air guide plate is inclined upward, and the inclination angle is the same as the downward inclination angle of the wind baffle, both being between 30° and 45°. A narrow gap, between 2mm and 4mm, is left between the air guide plate and the outer casing. The air inlet is horizontally set and its width is between 4mm and 6mm.

[0008] Furthermore, the fan is an axial flow fan, with the bottom fan used to draw outside air into the outer casing and the top fan used to draw air from the inner and outer casings to the outside.

[0009] Furthermore, the heat sink has a trapezoidal cross-section, and the end of the heat sink away from the inner casing has a rounded corner.

[0010] Furthermore, a temperature sensor is installed inside the inner casing, and both the temperature sensor and the fan are connected to an external controller. The controller is used to adjust the fan speed according to the real-time temperature inside the inner casing.

[0011] Furthermore, both the wind deflector and the air guide plate are made of aluminum alloy and are coated with a heat dissipation coating with a thickness of 0.1mm-0.3mm.

[0012] The beneficial effects of this utility model are: This application utilizes a double-layered layout of inner and outer casings, combined with an axial flow fan that draws air in from the bottom and exhausts it from the top, to form a forced convection channel from top to bottom. Furthermore, a downward-sloping annular baffle and an upward-sloping air guide plate guide the outside cold air to flow orderly along the outer wall of the inner casing. The air first enters through the bottom of the outer casing, is guided upwards by the air guide plate to the outer wall of the inner casing, and then is constrained by the annular baffle to prevent dissipation. Finally, it is exhausted by the top fan. Simultaneously, the air inlet at the connection point between the air guide plate and the inner casing further guides the airflow to contact the inner wall of the inner casing, forming a dual airflow path of external circumferential flow and internal contact flow. This solves the problems of turbulent airflow and heat dissipation dead zones in traditional systems, significantly improving heat dissipation efficiency compared to traditional simple fan structures. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the outer casing provided by this utility model; Figure 2 This is a schematic diagram of the internal structure of the inner box provided by this utility model; Figure 3 This is a partially enlarged structural schematic diagram of the present invention.

[0014] Figure label: In the diagram: 1 is the inner casing, 2 is the outer casing, 3 is the fan, 4 is the baffle, 5 is the air guide plate, 6 is the heat sink, and 7 is the air inlet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 This utility model provides a power distribution box cooling system, comprising: The inner box 1 and the outer box 2 are coaxially nested cylindrical structures. The inner housing 1 is used to install the required electrical components. The inner housing 1 is installed inside the outer housing 2, and there is a gap between the two. Fans 3 are provided at the bottom and top of the outer housing 2. An axial flow fan is embedded at the bottom center and the top center of the outer housing 2. The fan axis is collinear with the central axis of the inner and outer housings and is sealed to the outer housing through a flange. Wind baffles 4 are spaced out on the inner wall of the outer casing 2; they are spaced 3-5 layers apart along the height of the inner wall of the outer casing and are fixed to the inner wall of the outer casing by welding. The wind guide plate 5 and the wind baffle plate 4 are spaced apart on the outer wall of the inner box 1, and the wind baffle plate 4 at the same level is located directly below the wind baffle plate 4. The air guide plates are aligned with the wind baffles along the height of the outer wall of the inner box and are fixed to the outer wall of the inner box with bolts. The air guide plates on the same layer are located directly below the wind baffles. An air inlet 7 is provided at the connection position between the air guide plate 5 and the inner box 1.

[0017] In some embodiments, the inner casing 1 is made of copper and carbon fiber alloy, and heat sinks 6 are spaced apart on its outer surface. The heat sinks 6 are parallel to the top of the inner casing 1 and are located between adjacent air inlets.

[0018] The inner casing is made of copper and carbon fiber alloy (75%-85% copper and 15%-25% carbon fiber), and is formed by die casting.

[0019] The heat sink has a ring-shaped structure, which is integrally die-cast with the inner casing and is evenly distributed along the circumference of the inner casing and spaced apart along the axial direction.

[0020] In some embodiments, the wind deflector 4 is inclined downward and has an annular structure, and a slit is left between the wind deflector 4 and the inner box 1, the slit being between 3mm and 5mm.

[0021] The wind deflector is connected to the inner wall of the outer casing by welding, and is arranged in 3 to 5 layers to constrain the airflow to flow upward along the outer wall of the inner casing.

[0022] In some embodiments, the air guide plate 5 is inclined upwards at the same angle as the downward inclination angle of the wind baffle plate 4, both being between 30° and 45°. A narrow gap is left between the air guide plate 5 and the outer casing 2, the gap being between 2mm and 4mm. The air inlet is horizontally set, and its width is between 4mm and 6mm.

[0023] The air inlet is a horizontal rectangular hole, with 8-12 holes evenly distributed along the circumference of the inner box. The inner end connects to the inside of the inner box, and the outer end is flush with the upper surface of the air guide plate. It is used to guide the airflow from the slit of the air guide plate into the air inlet.

[0024] In some embodiments, the fan 3 is an axial flow fan, with the bottom fan 3 used to draw outside air into the outer casing 2, and the top fan 3 used to draw air from the inner casing 1 and the outer casing 2 to the outside.

[0025] The bottom fan has an upward-facing air outlet, drawing in outside air from the bottom of the outer casing and transporting it upwards along the gap between the outer and inner casings; the top fan has a downward-facing air inlet, drawing hot air from inside the inner casing and the gaps to the outside, forming a forced convection channel from bottom to top.

[0026] In some embodiments, the heat sink 6 has a trapezoidal cross-section, and the end of the heat sink 6 away from the inner casing 1 is provided with a rounded corner.

[0027] The heat sink has an isosceles trapezoidal cross-section, which is curved to fit the cylindrical surface of the inner casing. The end away from the inner casing has a rounded corner, which helps to reduce airflow resistance.

[0028] In some embodiments, a temperature sensor is provided inside the inner housing 1, and both the temperature sensor and the fan 3 are connected to an external controller. The controller is used to adjust the speed of the fan 3 according to the real-time temperature inside the inner housing 1.

[0029] In some embodiments, both the wind deflector 4 and the air guide plate 5 are made of aluminum alloy and are coated with a heat dissipation coating with a thickness of 0.1mm-0.3mm.

[0030] The wind deflector and air guide plate are made of 6063 aluminum alloy and coated with ceramic-based heat dissipation coating.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling system for a distribution box, characterized in that, include: Inner box and outer box; The inner enclosure is used to install the required electrical components. The inner enclosure is installed inside the outer enclosure with a gap between them. Fans are provided at the bottom and top of the outer enclosure. Wind deflectors are spaced apart on the inner wall of the outer casing; The wind deflector is spaced apart on the outer wall of the inner box, and the wind deflectors at the same level are located directly below the wind deflector. An air inlet is provided at the connection point between the air guide plate and the inner box.

2. The distribution box cooling system according to claim 1, characterized in that, The inner casing is made of copper and carbon fiber alloy, and its outer surface is provided with heat sinks at intervals. The heat sinks are parallel to the top of the inner casing and are located between adjacent air inlets.

3. The distribution box cooling system according to claim 1, characterized in that, The wind baffle is inclined downward and has a ring structure. A narrow gap of 3mm-5mm is left between the wind baffle and the inner box.

4. The distribution box cooling system according to claim 1, characterized in that, The air guide plate is tilted upward, and the tilt angle is the same as the downward tilt angle of the wind baffle, both being between 30° and 45°. A narrow gap is left between the air guide plate and the outer casing, the gap being between 2mm and 4mm. The air inlet is horizontally set, and its width is between 4mm and 6mm.

5. The distribution box cooling system according to claim 1, characterized in that, The fan is an axial flow fan. The bottom fan is used to draw outside air into the outer casing, and the top fan is used to draw air from the inner and outer casings to the outside.

6. The distribution box cooling system according to claim 2, characterized in that, The heat sink has a trapezoidal cross-section, and the end of the heat sink away from the inner casing has a rounded corner.

7. The distribution box cooling system according to claim 1, characterized in that, A temperature sensor is installed inside the inner chamber. Both the temperature sensor and the fan are connected to an external controller, which is used to adjust the fan speed according to the real-time temperature inside the inner chamber.

8. The distribution box cooling system according to claim 1, characterized in that, Both the wind deflector and the air guide plate are made of aluminum alloy and have a heat dissipation coating on their surface, with a coating thickness of 0.1mm-0.3mm.

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