Power distribution box

Abstract

The invention relates to the field of power distribution boxes, in particular to a power distribution box. Comprising a back plate and flat plates arranged on the upper side and the lower side of the back plate, a middle frame is fixedly connected to the back plate and the two flat plates, a cooling cavity is formed in the middle of the middle frame, corresponding sliding way frames are fixedly connected to the two flat plates, and two door plates for sealing the space formed by the back plate and the two flat plates are connected between the two sliding way frames in a sliding mode. A sealing plate is fixedly connected to the middle frame, a cooling pipe arranged in the cooling cavity is fixedly connected to the sealing plate, a cooling box is fixedly connected to the back plate, a storage box communicated with the cooling box is arranged on the cooling box, connecting pipes connected with the cooling pipe are arranged on the storage box, and a circulating pump is arranged on one connecting pipe. The heat dissipation effect of the two sides of the structure for partitioning the space of the distribution box can be improved.

Description

Technical Field

[0001] The present invention relates to the field of distribution boxes, and more specifically to a power distribution box. Background Art

[0002] A power distribution box is an important device for distributing and controlling electric energy in a power system. Its functions include distributing the electric energy of the main power supply to each branch circuit and protecting and managing the circuit through electrical components (such as circuit breakers, fuses, contactors, etc.) installed in the distribution box. According to different application scenarios and requirements, distribution boxes can be divided into various types, including fixed distribution boxes, mobile distribution boxes, outdoor distribution boxes, explosion-proof distribution boxes, etc. Each type has its specific design features and usage environments. The distribution box for shared use of strong electricity and weak electricity is one of the commonly used distribution boxes. For the electronic components of strong electricity and weak electricity, the commonly used distribution box is partitioned in the middle, and the partition for partitioning the distribution box can also be used for installing electronic components. However, the presence of the partition will reduce the heat dissipation effect of the electronic components in the distribution box. Summary of the Invention

[0003] To optimize the deficiencies of the prior art, the present invention provides a power distribution box that can increase the heat dissipation effect on both sides of the structure for partitioning the space of the distribution box.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] A power distribution box includes a back plate and flat plates arranged on the upper and lower sides of the back plate. A middle frame is fixedly connected to the back plate and the two flat plates. A cooling cavity is arranged in the middle of the middle frame. Corresponding slide frames are fixedly connected to the two flat plates. A door plate that encloses the space formed by the two closed back plates and the two flat plates is slidably connected between the two slide frames.

[0006] Further, a sealing plate is fixedly connected to the middle frame. A cooling pipe arranged in the cooling cavity is fixedly connected to the sealing plate. A cooling box is fixedly connected to the back plate. A storage box communicating with the cooling box is arranged on the cooling box. A connecting pipe connected to the cooling pipe is arranged on the storage box. A circulation pump is arranged on one of the connecting pipes.

[0007] Further, a plurality of cooling holes corresponding to the cooling pipe are arranged on the middle frame. A plurality of cushion plates are arranged on both sides of the middle frame. A hanging plate is detachably connected to each cushion plate. Ventilation holes staggered from the plurality of cooling holes are arranged on each hanging plate.

[0008] Further, the cooling pipe is a serpentine pipe.

[0009] Further, outer blocking strips and inner blocking strips are respectively arranged at the two vertical edge positions of the door plate.

[0010] Further, the two flat plates are semi-circular plates.

[0011] Further, a plurality of ventilation holes for installing fans are provided on the back plate and are distributed on both sides of the middle frame. The plurality of ventilation holes on both sides of the middle frame are respectively located on the upper and lower sides, and a support frame for installing filter paper is correspondingly provided for each ventilation hole.

[0012] Further, a support cavity for placing the filter paper is provided on the support frame.

[0013] Further, the distance between the two end faces of the two door panels in the vertical direction is greater than the distance between the two end faces of the two flat plates in the vertical direction.

[0014] Further, the distance between the two end faces of the outer blocking strip and the inner blocking strip in the vertical direction is equal to the distance between the two end faces of the two flat plates in the vertical direction.

[0015] The beneficial effects of the power distribution box of the present invention are as follows: it can increase the heat dissipation effect on both sides of the structure for partitioning the space of the distribution box; it can also fully dissipate the heat of the back plate of the distribution box and the electronic components adjacent to the partitioning structure through the water cooling cycle, and it can also reduce the obstruction during the operation of the electronic components through a partially cylindrical space, increasing the convenience of operating the electronic components in the distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the external structure of the power distribution box;

[0018] Figure 2 It is a schematic diagram of the structure of the power distribution box;

[0019] Figure 3 It is a schematic diagram of the back structure of the power distribution box;

[0020] Figure 4 It is a schematic diagram of the structure for cooling the inside of the distribution box;

[0021] Figure 5 It is a schematic diagram of the structure for partitioning the distribution box;

[0022] Figure 6 It is a schematic diagram of the partitioning structure of the distribution box;

[0023] Figure 7 It is a schematic diagram of the structure for installing the filter paper;

[0024] Figure 8 It is a schematic diagram of the water cooling structure;

[0025] Figure 9 It is a schematic diagram of the door panel structure.

[0026] In the figure: backplane 11; flat plate 12; slideway frame 13; ventilation hole 14; middle frame 15; cooling cavity 16; cooling hole 17; backing plate 18; sealing plate 21; cooling pipe 22; cooling box 23; storage box 24; connecting pipe 25; door panel 31; outer retaining strip 32; inner retaining strip 33; support frame 41; hanging plate 51; ventilation hole 52. Detailed implementation mode

[0027] Reference Figure 1 、 2 And 6, the embodiments of the distribution box facilitating the heat dissipation of power components are described in detail:

[0028] A power distribution box includes a backplane 11 and flat plates 12 arranged on the upper and lower sides of the backplane 11. A middle frame 15 is fixedly connected to the backplane 11 and the two flat plates 12. A cooling cavity 16 is arranged in the middle of the middle frame 15. Corresponding slideway frames 13 are fixedly connected to the two flat plates 12. A door panel 31 that forms a space with the two closed backplanes 11 and the two flat plates 12 is slidably connected between the two slideway frames 13.

[0029] The backplane 11 can be used for the track to install electronic components for the installation of electronic components. The lower flat plate 12 can be directly used for placing electronic components. For example, electronic components such as transformers that can be directly placed can be placed on it. The two side surfaces of the middle frame 15 can be used for the track to install electronic components for the installation of electronic components. The middle frame 15 divides the space formed by the backplane 11 and the two flat plates 12 into two parts, which can be partitioned for the strong electricity area and the weak electricity area for the installation of different electronic components. The door panel 31 can enclose the space formed by the backplane 11 and the two flat plates 12, playing the role of closing the space for installing electronic components and protecting the electronic components. The cooling cavity 16 of the middle frame 15 can facilitate the heat exchange between the electronic components installed on both sides of the middle frame 15 and the external environment, facilitating the cooling of the electronic components installed on both sides of the middle frame 15. It can enhance the heat dissipation performance of the electronic components suspended due to the partition while partitioning the space inside the distribution box, ensuring the stable operation of the electronic components under sufficient heat dissipation. Compared with the prior art where a partition is installed in the distribution box and electronic components are installed on the partition, and this partition cannot directly exchange heat with the outside, in this application, the middle frame 15 is used for partition and separation, and the cooling cavity 16 arranged in the middle of the middle frame 15 can increase the heat exchange rate between the electronic components installed on the middle frame 15 and the outside, which is more conducive to the heat dissipation of the electronic components. Handles are arranged on both door panels 31, facilitating grasping the handles to slide the door panel 31. Corresponding lock rings are arranged on both door panels 31, and a lock can pass through the lock ring for locking to prevent the two door panels 31 from sliding to expand the space inside the distribution box.

[0030] To optimize the heat exchange effect between the air inside the distribution box and the external air, the back plate 11 can also be set as a corrugated plate to increase the heat exchange area between the air inside the distribution box and the air in the external environment, so as to conduct better heat exchange and better cool the inside of the distribution box; other plates of the distribution box can also be set as corrugated plates in places where no other parts need to be installed to comprehensively enhance the heat dissipation effect inside the distribution box.

[0031] Reference Figure 2 、 3 、4, 6, and 8 to describe in detail the embodiments for further enhancing the heat dissipation performance of electronic components:

[0032] A sealing plate 21 is fixedly connected to the middle frame 15, a cooling pipe 22 arranged in the cooling cavity 16 is fixedly connected to the sealing plate 21, a cooling box 23 is fixedly connected to the back plate 11, a storage box 24 communicating with the cooling box 23 is arranged on the cooling box 23, a connecting pipe 25 connected to the cooling pipe 22 is arranged on the storage box 24, and a circulation pump is arranged on one of the connecting pipes 25.

[0033] An adding hole and a cover are arranged on the storage box 24. The storage box 24 is used to store the coolant. The storage box 24 communicates with the cooling box 23. There is sufficient coolant in the cooling box 23. The coolant in the cooling box 23 can fully exchange heat with the electronic components installed on the back plate 11 and can fully cool the electronic components installed on the back plate 11. When the circulation pump is started, the circulation pump pressurizes the coolant in the storage box 24 and transports it through the upper connecting pipe 25 to the upper part of the cooling pipe 22. The coolant flows from the upper part of the cooling pipe 22 to the lower part and then flows back to the storage box 24 through the lower connecting pipe 25 to realize the circulation of the coolant. The coolant circulating in the cooling pipe 22 can fully exchange heat with the electronic components installed on the middle frame 15 through the air in the space, and then indirectly exchange heat, so as to reduce the temperature of the working environment of the electronic components, ensure the working temperature of the electronic components, prevent the working environment from heating up due to the heat generated by the electronic components, and further prevent the electronic components from working in a high-temperature environment and being damaged. Thus, it is ensured that the electronic components installed on the middle frame 15 used for partitioning the distribution box can be fully cooled. The sealing plate 21 can block the cooling cavity 16 to prevent the space in the cooling cavity 16 from exchanging heat with the space outside the distribution box, causing the temperature in the cooling cavity 16 to rise, and further reducing the heat dissipation effect of the coolant circulating in the cooling pipe 22 on the electronic components installed on the middle frame 15. Therefore, the heat dissipation effect of the electronic components on both sides of the middle frame 15 is further enhanced. It is possible to enhance the heat dissipation performance of the electronic components suspended due to partitioning while partitioning the internal space of the distribution box, ensuring the stable operation of the electronic components under sufficient heat dissipation.

[0034] To achieve the heat dissipation effect for electronic components with different heat generation amounts, the electronic components with large heat dissipation are installed on one side of both sides of the middle frame 15 away from the backplane 11, and other electronic components are installed on both sides of the backplane 11 and the middle frame 15 close to the backplane 11. Thus, when the cold flow that has undergone heat exchange through the cooling pipe 22 flows through the electronic components on both sides of the middle frame 15, sufficient heat exchange can be carried out. After dissipating the heat of the electronic components on both sides of the middle frame 15, the heat of other electronic components in the distribution box is dissipated. The temperature of the air is further reduced after being cooled by the cooling pipe 22, and then better heat dissipation is carried out for the electronic components with high heat dissipation. The cold air that has undergone one heat exchange takes away the heat of other electronic components through flow, thereby making full use of the heat dissipation effect of the cooling pipe 22 to ensure sufficient heat dissipation of different types of electronic components in the distribution box.

[0035] Reference Figure 2 、 5 And 6, a detailed description is given of an embodiment for further enhancing the heat dissipation effect of electronic components in the distribution box:

[0036] A plurality of cooling holes 17 corresponding to the cooling pipe 22 are provided on the middle frame 15. A plurality of backing plates 18 are provided on both sides of the middle frame 15. A hanging plate 51 is detachably connected to each backing plate 18, and ventilation holes 52 staggered from the plurality of cooling holes 17 are provided on each hanging plate 51.

[0037] The setting of the cooling holes 17 can reduce the heat dissipation interval between the cooling pipes 22 and the electronic components installed on both sides of the middle frame 15. At the same time, it can increase the air circulation on both sides of the middle frame 15, make more full use of the heat exchange function of the coolant, enable the coolant in the cooling pipes 22 to more easily exchange heat with the electronic components on both sides of the middle frame 15, and make it more convenient for the coolant in the cooling pipes 22 to exchange heat with the air in the space where the electronic components on both sides of the middle frame 15 are located. It is more conducive to cooling the environment where the electronic components on both sides of the middle frame 15 are located, and is beneficial to keeping the electronic components on both sides of the middle frame 15 in a lower temperature environment, preventing the working environment temperature of the electronic components from being too high and causing damage to the electronic components. The backing plate 18 is used to separate the hanging plate 51 for installing electronic components from the middle frame 15, increasing the interval and preventing the cooling holes 17 on the middle frame 15 from being blocked, resulting in the situation where the cold air after heat exchange cannot circulate, affecting the cooling effect of the coolant in the cooling pipes 22 on the environment. The hanging plate 51 is used to install electronic components or the tracks for installing electronic components, and the setting of the ventilation holes 52 can further reduce the interval between the electronic components installed on the hanging plate 51 or the tracks on the hanging plate 51 on both sides of the middle frame 15 and the coolant in the cooling pipes 22. At the same time, the staggering of the cooling holes 17 and the ventilation holes 52 can prevent the air cooled by the coolant in the cooling pipes 22 from passing through the cooling holes 17 and the ventilation holes 52 at once and not being able to fully contact the electronic components. The staggering of the cooling holes 17 and the ventilation holes 52 can make the air cooled by the coolant in the cooling pipes 22 fully disperse around the electronic components distributed on both sides of the middle frame 15, ensuring the working environment of the electronic components.

[0038] To further optimize the heat dissipation effect of the cooling pipes 22 on the electronic components on both sides of the middle frame 15, when selecting the cooling pipes 22, they are fully attached to the inner wall of the middle frame 15 to ensure the heat transfer between the cooling pipes 22 and the middle frame 15. The electrical installation rails for installing electronic components can also be directly installed on the middle frame 15 to make the electronic components more closely attached to the middle frame 15, so as to indirectly contact the electronic components through the cooling pipes 22 for heat exchange, ensuring the heat dissipation effect of the cooling pipes 22 on the electronic components on both sides of the middle frame 15 and ensuring that the heat dissipation effect of the electronic components can be used stably for a long time.

[0039] Reference Figure 8 , a detailed example of making full use of the coolant in the cooling pipes 22 is described in detail:

[0040] The cooling pipe 22 is a serpentine pipe. Thus, it can be ensured that during the circulation of the coolant, the air flowing through the cooling holes 17 can fully contact the serpentine cooling pipe 22 for heat exchange, thereby cooling the air passing through the cooling holes 17.

[0041] Reference Figure 1 , 2, 6, and 9, a detailed description of an embodiment in which the limit door panel 31 slips off:

[0042] Outer blocking strips 32 and inner blocking strips 33 are respectively arranged at the positions of the two vertical edges of the door panel 31. The outer blocking strip 32 is arranged on the side of the door panel 31 close to the back plate 11, and the inner blocking strip 33 is arranged on the side of the door panel 31 close to the middle frame 15. The outer blocking strip 32 can prevent the door panel 31 from sliding past the middle position on the slide rail frame 13, causing the other door panel 31 to slide, resulting in the two door panels 31 being unable to completely cover the distribution box, causing the electronic components inside the distribution box to be exposed, and thus unable to protect the electronic components inside the distribution box. The inner blocking strip 33 can prevent the door panel 31 from sliding out of the slide rail frame 13 and detaching from the distribution box.

[0043] Reference Figure 1 , 2 and 9, a detailed description of an embodiment for increasing the operational convenience of the electronic components inside the distribution box:

[0044] The two flat plates 12 are semi-circular plates. The two slide rail frames 13 are semi-circular in shape, so that the space formed by the back plate 11 and the two flat plates 12 is divided into two quarter-cylindrical spaces by the middle frame 15. When the two door panels 31 are fully opened, the two quarter-cylindrical spaces are fully expanded. When the operator operates the electronic components in the open quarter-cylindrical space, there will be no obstruction from the upper, lower, and side plates of the traditional box-shaped distribution box, enabling the operator to reduce the obstruction of the distribution box when operating the electronic components inside the distribution box and increasing the operational convenience of the electronic components inside the distribution box.

[0045] Reference Figure 2 , 3 、6, and 7, a detailed description of an embodiment of air flow inside the distribution box:

[0046] A plurality of ventilation holes 14 for installing fans are arranged on the back plate 11 on both sides of the middle frame 15. The plurality of ventilation holes 14 on both sides of the middle frame 15 are respectively located on the upper and lower sides, and each ventilation hole 14 is correspondingly provided with a support frame 41 for installing a filter paper. A receiving cavity for placing the filter paper is arranged on the support frame 41.

[0047] The fan at the position of the lower ventilation hole 14 drives the air to flow into the distribution box, then flows from one side of the middle frame 15 to the other side, and then flows out from the ventilation hole 14 on the other side. The fan installed on the ventilation hole 14 at a high position drives the air to flow out of the distribution box, and the external support frame 41 is used to install the filter paper to filter the flowing air, preventing dust from flowing into the distribution box and accumulating, which affects the use of the electronic components inside the distribution box.

[0048] After the air flows into the distribution box from the lower ventilation holes 14, it passes through the multiple cooling holes 17 on the middle frame 15, flows to the other side of the distribution box, and then flows out from the upper ventilation holes 14 to take away the heat of the electronic components in the distribution box. When flowing through the middle frame 15, the air contacts the cooling pipe 22, so that the air is cooled again after exchanging heat with some electronic components, and then flows to another part of the space in the distribution box, and the flowing air is cooled again in the distribution box to ensure that the air takes away the heat of the electronic components during the process of flowing into and out of the distribution box, and ensure the heat dissipation effect of the electronic components in the distribution box.

[0049] In order to further optimize the effect of the cooling pipe 22 to reduce the temperature of the flowing air after heat exchange with the air flowing through the cooling pipe 22, cooling holes 17 can be not provided on both sides of the middle frame 15, a hole passage can be provided at the upper part on one side of the middle frame 15, and a hole passage can be provided at the lower part on the other side of the middle frame 15, so that when the air flows from one side of the middle frame 15 to the other side, the cavity where the cooling pipe 22 is provided in the middle of the middle frame 15 is completely circulated, thereby prolonging the contact time between the air and the cooling pipe 22, further enhancing the cooling pipe 22 to reduce the temperature of the air flowing through the cooling pipe 22, so as to ensure the heat dissipation effect of the electronic components after the cold air flows to the other side of the middle frame 15. The gas flows into the space on the other side of the distribution box from the lower part, and then flows out from the upper ventilation holes 14, so as to ensure that the cold air flows from the lower part to the upper part, completely covering the electronic components on that side and ensuring the full cooling of the electronic components. At the same time, the cooling pipe 22 is attached to the middle frame 15, the middle frame 15 is attached to the backing plate 18, the backing plate 18 is attached to the electrical installation track, and the electrical installation track is attached to the electronic components. The cooling pipe 22 plays a role of water cooling on the middle frame 15, the backing plate 18, the electrical installation track and the electronic components in long-term use, so that the effect of water cooling the electronic components can be realized under long-term operation; thereby further strengthening the heat dissipation effect of the electronic components in the distribution box.

[0050] Reference Figure 9 , a detailed description is given of an embodiment in which the two door panels 31 fully block the space formed by the back plate 11 and the two flat plates 12:

[0051] The distance between the two end faces of the two door panels 31 in the vertical direction is greater than the distance between the two flat plates 12 in the vertical direction. The distance between the two end faces of the outer blocking strip 32 and the inner blocking strip 33 in the vertical direction is equal to the distance between the two flat plates 12 in the vertical direction. Thus, the two door panels 31 can fully block the space formed by the back plate 11 and the two flat plates 12, preventing gaps in the vertical direction, and the two outer blocking strips 32 and the two inner blocking strips 33 can fully prevent being longer than the distance between the two flat plates 12 in the vertical direction, which may cause problems such as inability to install and movement interference. Therefore, the two door panels 31 fully block the space formed by the back plate 11 and the two flat plates 12, providing full protection for the electronic components.

Claims

1. A power distribution box, characterized in that: It includes a backboard (11) and flat plates (12) arranged on the upper and lower sides of the backboard (11). A middle frame (15) is fixedly connected to the backboard (11) and the two flat plates (12). A cooling cavity (16) is arranged in the middle of the middle frame (15). Corresponding slide frames (13) are fixedly connected to the two flat plates (12). A door panel (31) that encloses the space formed by the backboard (11) and the two flat plates (12) is slidably connected between the two slide frames (13).

2. The power distribution box according to claim 1, characterized in that: A sealing plate (21) is fixedly connected to the middle frame (15). A cooling pipe (22) arranged in the cooling cavity (16) is fixedly connected to the sealing plate (21). A cooling box (23) is fixedly connected to the backboard (11). A storage box (24) communicating with the cooling box (23) is arranged on the cooling box (23). A connecting pipe (25) connected to the cooling pipe (22) is arranged on the storage box (24). A circulation pump is arranged on one of the connecting pipes (25).

3. The power distribution box according to claim 2, characterized in that: A plurality of cooling holes (17) corresponding to the cooling pipe (22) are arranged on the middle frame (15). A plurality of cushion plates (18) are arranged on both sides of the middle frame (15). A hanging plate (51) is detachably connected to each cushion plate (18). Ventilation holes (52) staggered from the plurality of cooling holes (17) are arranged on each hanging plate (51).

4. A power distribution box according to claim 2, characterized in that: The cooling pipe (22) is a serpentine pipe.

5. A power distribution box according to claim 1, characterized in that: Outer blocking strips (32) and inner blocking strips (33) are respectively arranged at the two vertical edge positions of the door panel (31).

6. The power distribution box according to claim 1, characterized in that: The two flat plates (12) are semi-circular plates.

7. A power distribution box according to claim 1, characterized in that: A plurality of air exchange holes (14) for installing fans are arranged on the backboard (11) and are distributed on both sides of the middle frame (15). The plurality of air exchange holes (14) on both sides of the middle frame (15) are respectively located on the upper and lower sides. A support frame (41) for installing filter paper is correspondingly arranged for each air exchange hole (14).

8. The power distribution box according to claim 7, wherein: A support cavity for placing filter paper is arranged on the support frame (41).

9. A power distribution box according to claim 1, characterized in that: The distance between the two end faces in the vertical direction of the two door panels (31) is greater than the distance between the two flat plates (12) in the vertical direction.

10. A power distribution box according to claim 5, characterized in that: The distance between the two end faces in the vertical direction of the outer blocking strip (32) and the inner blocking strip (33) is equal to the distance between the two flat plates (12) in the vertical direction.

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