A heat-dissipating busbar trunking

Abstract

This invention belongs to the field of busbar trunking technology, specifically disclosing a heat-dissipating busbar trunking, including two side plates and two cover plates. The two side plates are arranged symmetrically from left to right, and the two cover plates are arranged symmetrically from top to bottom. The side plates and cover plates enclose a closed chamber, and multiple busbar plates are arranged inside the closed chamber. Cooling fins are arranged inside the multiple busbar plates. Multiple sets of heat dissipation units are arranged at equal intervals along the horizontal direction inside the cover plate located above. This invention improves heat dissipation efficiency and flexibility through dynamic and flexible heat dissipation, and is suitable for high current and long-term operation scenarios.

Description

Technical Field

[0001] This invention belongs to the field of busbar technology, and specifically discloses a heat-dissipating busbar. Background Technology

[0002] Busbar trunking, as the core carrier for transmitting large currents in power systems, is widely used in high-rise buildings, data centers, industrial plants, and other scenarios. Its typical structure mainly consists of three parts: conductive busbars, insulating spacers, and a metal shell. The conductive busbars are mostly made of copper or aluminum alloy and are arranged in parallel according to the number of phases (such as three-phase four-wire system). Adjacent busbars are separated by insulating spacers (such as epoxy resin boards) to prevent short circuits. The entire structure is encapsulated in a metal shell, forming a closed or semi-closed current transmission channel to ensure electrical safety and dust protection.

[0003] However, in actual operation, busbar trunking generally faces technical challenges such as low heat dissipation efficiency and excessive local temperature rise due to its own structural characteristics and heat dissipation design defects. The specific reasons are as follows:

[0004] Existing busbar cooling designs mostly focus on the outer shell (such as adding heat dissipation fins) or simple internal ventilation. A few solutions that use coolant cooling also have obvious drawbacks: the coolant containers are mostly cylindrical structures with limited contact area between the coolant and the busbar plate, and the coolant is in a static or unidirectional flow state, only making partial contact with the inner wall of the container. A large amount of coolant is discharged without participating in heat exchange. At the same time, the cooling mechanisms are mostly fans and coolant pumps, which are mostly normally closed or manually controlled, and cannot be used according to the actual temperature of the busbar. This forces the cooling mechanisms to run continuously, which can easily lead to energy waste and component wear, resulting in inflexible cooling action.

[0005] Therefore, a heat-dissipating busbar trunking is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the background art, and to propose a heat dissipation busbar trunking, including two side plates and two cover plates. The two side plates are arranged symmetrically from left to right, and the two cover plates are arranged symmetrically from top to bottom. The side plates and cover plates enclose a closed chamber. Multiple busbar plates are arranged inside the closed chamber. Cooling fins are arranged inside the multiple busbar plates. Multiple heat dissipation units are arranged at equal intervals along the horizontal direction inside the cover plate located above.

[0007] The multiple sets of heat dissipation units also include ventilation boxes, controllers, drainage boxes, micro motors, and synchronous belt assemblies;

[0008] The ventilation box is embedded inside the upper cover plate. The drainage box is inserted at an angle into one side of the ventilation box near the top. A rectangular opening is provided at the rear end of the ventilation box. A sealing element is provided on the outer wall of the rear end of the ventilation box corresponding to the rectangular opening. A rotating shaft is rotatably installed at the lower part of the ventilation box. Heat dissipation rods are respectively fitted on the outside of the rotating shaft near the gap between two adjacent busbars. A temperature sensor is provided on the upper surface of one end of the heat dissipation rod. A cooling liquid injection component is provided inside the end of the heat dissipation rod away from the temperature sensor.

[0009] In the above technical solution, the cooling liquid injection component further includes a liquid injection pipe that is connected to the end of the heat sink rod away from the temperature sensor, and the liquid injection pipe is threaded with a cap.

[0010] In the above technical solution, the sealing element further includes a bracket symmetrically installed on the outer wall of the rear end of the ventilation box and below the corresponding rectangular opening. A shaft connecting seat is rotatably installed inside both sets of brackets. A flip cover is installed on the top of the two shaft connecting seats. A buckle is provided on the upper part of the outer wall of the rear end of the ventilation box.

[0011] In the above technical solution, the buckle further includes a fixed rod fixedly installed on the upper part of the rear outer wall of the ventilation box, a lever is rotatably sleeved on the outside of the fixed rod, a buffer pad is provided on the inner surface of the lever, and the buffer pad is movably fitted with the outer surface of the flip cover.

[0012] In the above technical solution, a connecting shaft is rotatably installed on one side inside the ventilation box, and the synchronous belt assembly is fitted together on the outside of the connecting shaft and the rotating shaft. One end of the connecting shaft is connected to the output end of the micro motor, and the micro motor is fixed to the inner wall of the ventilation box by a fixed bracket.

[0013] In the above technical solution, the heat dissipation rod is further provided with a flow channel inside, and the inner wall of the flow channel is provided with multiple inclined flow-blocking plates, and the multiple flow-blocking plates are arranged at equal intervals along the inside of the flow channel.

[0014] In the above technical solution, a slot is further provided inside the drainage box, and a filter window is slidably installed inside the slot.

[0015] In the above technical solution, a fixing plate is further fixedly installed on the inner wall of the rear end of the ventilation box and below the rectangular opening. The inner surface of one side of the fixing plate is connected to the top of the cover plate near the top by a threaded fixing bolt. A controller is fixedly installed on one side of the top of the ventilation box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting cooling fins inside the busbar, the heat generated by the busbar can be quickly absorbed. At the same time, multiple heat dissipation units are set inside the cover plate, and heat dissipation rods are arranged for the heat accumulation area between adjacent busbars. This achieves precise heat transfer from the busbar to the heat dissipation structure, solving the problem of heat accumulation in the outer shell and the interior of the traditional busbar trunking, and greatly improving heat dissipation efficiency.

[0018] 2. By setting up a flow channel with inclined cross baffles inside the heat sink, and injecting coolant with the coolant injection component, the baffles can break the unidirectional flow of coolant when it flows in the flow channel, prolonging the residence time of coolant in the flow channel, increasing the contact area between coolant and the inner wall of the heat sink, avoiding the problem of low coolant utilization in traditional straight cylindrical coolant containers, giving full play to the heat exchange function of coolant, and improving heat dissipation effect.

[0019] 3. By setting a temperature sensor on the heat dissipation rod and linking it with the controller and micro motor, when the temperature sensor detects that the busbar temperature rises to the set threshold, the controller can automatically drive the micro motor to start, and drive the rotating shaft and heat dissipation rod to rotate through the synchronous belt assembly, so as to realize the dynamic heat dissipation of the heat dissipation rod; after the temperature drops, it can automatically stop running, avoiding the energy waste and component wear caused by the normally closed operation of traditional heat dissipation mechanism, and improving the flexibility and energy saving of heat dissipation action.

[0020] 4. By tilting and inserting the diversion box inside the ventilation box, external cold air can be guided to flow precisely into the enclosed cavity of the busbar trunking. At the same time, the filter window that slides inside the diversion box can block dust and impurities from entering, which not only ensures the ventilation and heat dissipation effect, but also avoids dust accumulation from affecting the operation of the busbar trunking. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0023] Figure 3 This is a schematic diagram of the connection structure between the busbar and the heat sink rod of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the ventilation box and the heat dissipation rod of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection structure of the inner part of the ventilation box of the present invention;

[0026] Figure 6 This is a schematic diagram of the sealing structure connection of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure between the rotating shaft, heat sink, and micro motor of the present invention;

[0028] Figure 8 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0029] In the diagram: 1. Side plate; 2. Cover plate; 3. Ventilation box; 4. Controller; 5. Flip-top plate; 6. Drainage box; 7. Busbar board; 8. Fixing plate; 9. Fixing bolt; 10. Heat sink rod; 11. Temperature sensor; 12. Fixing bracket; 13. Micro motor; 14. Rotating shaft; 15. Liquid injection pipe; 16. Shaft connecting seat; 17. Card holder; 18. Cooling plate; 19. Fixed rod; 20. Toggle block; 21. Rectangular opening; 22. Flow retainer plate; 23. Synchronous belt assembly; 24. Connecting shaft; 25. Cap; 26. Filter window. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0032] like Figures 1-8 The heat dissipation busbar trunking shown includes two side plates 1 and two cover plates 2. The two side plates 1 are arranged symmetrically from left to right, and the two cover plates 2 are arranged symmetrically from top to bottom. The side plates 1 and the cover plates 2 enclose a closed chamber. Multiple busbar plates 7 are arranged inside the closed chamber. Cooling fins 18 are arranged inside the multiple busbar plates 7. Multiple heat dissipation units are arranged at equal intervals along the horizontal direction inside the cover plate 2 located above.

[0033] The multiple heat dissipation units also include a ventilation box 3, a controller 4, a drainage box 6, a micro motor 13, and a synchronous belt assembly 23;

[0034] Ventilation box 3 is embedded inside the upper cover plate 2. Drainage box 6 is inserted into the ventilation box 3 at an angle on one side and near the top. A rectangular opening 21 is opened at the rear end of the ventilation box 3. A sealing element is provided on the outer wall of the rear end of the ventilation box 3 corresponding to the rectangular opening 21. A rotating shaft 14 is rotatably installed at the lower part of the ventilation box 3. Heat dissipation rods 10 are respectively fitted on the outside of the rotating shaft 14 near the gap between two adjacent busbar plates 7. A temperature sensor 11 is provided on the upper surface of one end of the heat dissipation rod 10. A cooling liquid injection component is provided inside the end of the heat dissipation rod 10 away from the temperature sensor 11.

[0035] In this embodiment, multiple heat dissipation units are distributed horizontally at equal intervals and designed for the critical area of ​​heat accumulation in the gap between adjacent busbars 7. This is the core execution module for active heat dissipation. Among them, the ventilation box 3 provides a mounting carrier for the heat dissipation components, the controller 4 realizes temperature adaptive regulation, the diversion box 6 guides external cold air, and the micro motor 13 and the synchronous belt assembly 23 provide power for the rotation of the heat dissipation rod 10.

[0036] Specifically, when the busbar 7 is powered on, the heat generated by the current is first absorbed by the internal cooling fins 18, which absorb the heat in the middle of multiple busbars 7. The temperature sensor 11 monitors the temperature at the gap between adjacent busbars 7 in real time. When the temperature exceeds the preset threshold of the controller 4, the controller 4 drives the micro motor 13 to start. The micro motor 13 drives the connecting shaft 24 and the rotating shaft 14 to rotate synchronously through the synchronous belt assembly 23. The rotating shaft 14 drives the heat dissipation rod 10 to swing back and forth in a semi-fan shape at the gap between the busbars 7. The heat dissipation rod 10 absorbs the heat in the gap through its own heat conduction and accelerates the air flow in the gap by rotating, pushing the hot air towards the ventilation box 3. At the same time, the coolant inside the heat dissipation rod 10 absorbs heat through the cooling injection component, further enhancing heat exchange. The external cold air enters the ventilation box 3 through the inclined drainage box 6, mixes with the hot air, and is discharged, forming a complete heat dissipation cycle. When the temperature drops to the safe threshold, the controller 4 stops the micro motor 13 from running, realizing adaptive energy-saving heat dissipation.

[0037] The cooling fluid injection component includes a fluid injection pipe 15 that is connected to the end of the heat sink 10 that is away from the temperature sensor 11, and the fluid injection pipe 15 is threaded with a cap 25.

[0038] In this embodiment, the injection tube 15 provides a channel for coolant, and the cap 25 is threaded onto the outside of the injection tube 15. When the heat sink 10 is running, the injection tube 15 is kept in a sealed state. When adding coolant, the cap 25 is screwed off to remove it from the injection tube 15.

[0039] The sealing element includes a bracket 17 symmetrically installed on the outer wall of the rear end of the ventilation box 3 and below the rectangular opening 21. A shaft connecting seat 16 is rotatably installed inside both brackets 17. A flip cover plate 5 is installed on the top of the two shaft connecting seats 16. A fastener is provided on the top of the outer wall of the rear end of the ventilation box 3.

[0040] In this embodiment, the card holder 17 is a flip support structure for the shaft connecting seat 16, providing a rotation fulcrum for the flip cover 5. An extended shaft is provided at the lower end of the shaft connecting seat 16, and the shaft and the card holder 17 are rotated together to ensure that the flip cover 5 can be flexibly flipped and closed.

[0041] The fastener includes a fixed rod 19 fixedly installed on the upper part of the rear outer wall of the ventilation box 3. A lever 20 is rotatably sleeved on the outside of the fixed rod 19. A buffer pad is provided on the inner surface of the lever 20. The buffer pad is in movable contact with the outer surface of the flip cover 5.

[0042] In this embodiment, the operator rotates the lever 20 around the fixed rod 19, so that the buffer pad on the inner surface of the lever 20 fits tightly against the outer surface of the flip cover 5. Through the elasticity of the lever 20 itself and the friction of the buffer pad, the flip cover 5 is pressed and fixed to prevent the flip cover 5 from opening by itself. When it is necessary to unlock the flip cover 5, the lever 20 is rotated in the opposite direction to make the buffer pad detach from the outer surface of the flip cover 5, and the flip cover 5 can be flipped downward. The fixed support of the fixed rod 19 and the flexible rotation of the lever 20 cooperate to realize the quick locking and unlocking of the flip cover 5. The operation is convenient and the locking reliability is high. At the same time, the design of the buffer pad takes into account both protection and stability. A sealing rubber ring is added to the inner surface of the flip cover 5 near the edge of the rectangular opening 21. When closed, it can seal the rectangular opening 21 and abut against the edge of the rectangular opening 21.

[0043] A connecting shaft 24 is rotatably installed on one side inside the ventilation box 3. The synchronous belt assembly 23 is fitted together on the outside of the connecting shaft 24 and the rotating shaft 14. One end of the connecting shaft 24 is connected to the output end of the micro motor 13. The micro motor 13 is fixed to the inner wall of the ventilation box 3 by a fixed bracket 12.

[0044] In this embodiment, the synchronous belt assembly 23 consists of a synchronous belt and a synchronous pulley, which are respectively fitted onto the outside of the connecting shaft 24 and the rotating shaft 14, enabling the synchronous rotation of the connecting shaft 24 and the rotating shaft 14;

[0045] Specifically, after the controller 4 sends a start signal to the micro motor 13, the output shaft of the micro motor 13 drives the connecting shaft 24 to rotate. The connecting shaft 24 drives the synchronous belt assembly 23 to rotate through the externally mounted synchronous pulley. The synchronous belt further drives the synchronous pulley on the rotating shaft 14 to rotate, so that the rotating shaft 14 and the connecting shaft 24 rotate synchronously. When the rotating shaft 14 rotates, the externally mounted heat dissipation rod 10 swings back and forth in a semi-fan shape to achieve dynamic heat dissipation of the gap in the busbar 7. The fixing frame 12 ensures that the micro motor 13 is stable in position during operation, avoids vibration that causes the coaxiality deviation between the connecting shaft 24 and the rotating shaft 14, and thus ensures the reliable transmission of the synchronous belt assembly 23. The synchronous transmission characteristics of the synchronous belt assembly 23 can ensure that multiple heat dissipation rods 10 rotate at the same time, avoiding uneven heat dissipation caused by differences in speed.

[0046] The heat sink 10 has a flow channel inside, and multiple inclined flow-blocking plates 22 are provided on the inner wall of the flow channel. The multiple flow-blocking plates 22 are arranged at equal intervals and cross each other along the inside of the flow channel.

[0047] In this embodiment, the flow channel is opened inside the heat sink 10 to provide space for the coolant to be contained and flow;

[0048] Specifically, after the coolant is injected into the internal flow channel of the radiator rod 10, when the radiator rod 10 rotates with the shaft 14, the coolant flows along the flow channel under the action of centrifugal force and gravity. When it flows through the baffle plate 22, the inclined and intersecting baffle plate 22 blocks the unidirectional flow of the coolant, forcing the coolant to change its flow direction and forming turbulence. The baffle plate 22 prolongs the residence time of the coolant in the flow channel and increases the contact area between the coolant and the inner wall of the flow channel and the baffle plate 22, so that the coolant can fully absorb the heat absorbed by the radiator rod 10 from the gap of the busbar plate 7. In addition, the baffle plate 22 can also enhance the structural strength of the radiator rod 10, prevent the problem of insufficient rigidity caused by the hollow interior of the radiator rod 10, and take into account both heat exchange enhancement and structural support functions.

[0049] The drainage box 6 has a slot inside, and a filter window 26 is slidably installed inside the slot.

[0050] In this embodiment, the bayonet is adapted to the filter window 26, providing a sliding installation channel for the filter window 26, ensuring that the filter window 26 can be flexibly inserted and removed;

[0051] Specifically, when external cold air enters the drainage box 6 under the action of thermal pressure difference, it must first pass through the filter window 26. The metal mesh inside the filter window 26 can block dust, hair and other impurities in the air, preventing impurities from entering the ventilation box 3 with the airflow, thereby preventing impurities from adhering to the surface of the busbar 7 and affecting the insulation performance. When there are many impurities on the surface of the filter window 26, the operator can pull the filter window 26 out of the drainage box 6 along the bayonet for cleaning. After cleaning, it can be inserted back into its original position along the bayonet for quick maintenance.

[0052] A fixing plate 8 is fixedly installed on the inner wall of the rear end of the ventilation box 3 and below the rectangular opening 21. The inner surface of one side of the fixing plate 8 is connected to the top of the cover plate 2 near the top by a fixing bolt 9 connected by a thread. A controller 4 is fixedly installed on one side of the top of the ventilation box 3.

[0053] In this embodiment, the controller 4 integrates a CPU, a signal receiving module, a motor drive module, and can receive signals from the temperature sensor 11. It can also control the start and stop of the micro motor 13 according to external presets. This structure is existing technology and will not be described in detail.

[0054] Specifically, the controller 4 receives the temperature signal transmitted by the temperature sensor 11 in real time. When the temperature exceeds the preset threshold (e.g., 60°C), the controller 4 drives the micro motor 13 to start and controls the motor to run. When the temperature drops to the safety threshold (e.g., 45°C), the controller 4 sends a stop signal to turn off the micro motor 13.

[0055] The detachable connection design of the fixing plate 8 and the fixing bolt 9 also facilitates the later removal of the ventilation box 3 from the cover plate 2 for maintenance.

[0056] Working Principle: After the equipment is assembled, the two side plates 1 and the two cover plates 2 enclose a closed chamber. Multiple busbars 7 are arranged in parallel within the chamber, forming the core of current transmission. When the busbars 7 are powered on, the Joule heat generated by the current is first absorbed by the internally embedded cooling fins 18, which quickly disperse the heat accumulated in the middle, initially reducing the temperature of the busbar 7 body and laying the foundation for subsequent enhanced heat dissipation. Then, the flip cover 5 is opened, and coolant is injected into each injection pipe 15 through the external hose. After completion, the cap 25 is tightened to ensure the flow channel is sealed. The temperature sensor 11 on the upper surface of one end of the heat dissipation rod 10 monitors the temperature at the gap between each adjacent busbar 7 in real time. When the temperature exceeds the preset threshold of the controller 4, the controller 4 starts the micro motor 13, whose output shaft drives the connecting shaft 24 to rotate. Under the transmission of the synchronous belt assembly 23, The rotating shaft 14 is driven to rotate, and multiple heat dissipation rods 10 outside the rotating shaft 14 rotate synchronously (the rotation angle is a semi-fan-shaped reciprocating swing to avoid airflow turbulence in the cavity). When the heat dissipation rods 10 rotate with the rotating shaft 14, their outer walls fully contact the hot air in the gap of the busbar plate 7, absorbing the heat. At the same time, the rotation accelerates the air flow in the gap, quickly dissipating the hot air and achieving the purpose of airflow disturbance. When the heat dissipation rods 10 rotate, the coolant in the flow channel flows with the swing of the rods. Multiple flow-blocking plates 22 arranged at equal intervals on the inner wall of the flow channel block the unidirectional flow of the coolant, prolonging its residence time in the flow channel, and increasing the contact area between the coolant and the inner wall of the heat dissipation rods 10. The coolant fully absorbs the heat absorbed by the heat dissipation rods 10 from the gap of the busbar plate 7, reduces the temperature of the heat dissipation rods 10 through its own heat capacity, and thus continuously and efficiently removes the heat from the gap of the busbar plate 7.

[0057] When the temperature sensor 11 detects that the temperature of the busbar 7 has reached a safe value, the micro motor 13 stops running and the heat sink 10 also stops rotating to avoid energy waste and achieve adaptive control of high-temperature start-up and low-temperature stop. At the same time as the micro motor 13 starts, the diversion box 6, which is inserted at an angle on one side of the ventilation box 3, plays a guiding role. The cold air outside is affected by the thermal pressure difference inside the cavity and enters the ventilation box 3 along the inclined channel of the diversion box 6, where it mixes with the hot air around the heat sink 10 and accelerates the discharge of hot air. The filter window 26, which is installed in the diversion box 6 with a snap-fit, can filter dust and impurities in the air and prevent them from entering the closed cavity and contaminating the busbar 7.

[0058] When the equipment is stopped, the operator rotates the lever 20 outside the fixed rod 19 on the upper part of the rear outer wall of the ventilation box 3, so that the buffer pad on the inner surface of the lever 20 is disengaged from the outer surface of the flip cover 5. Then, the shaft connecting seat 16 rotating around the inside of the card seat 17 flips the flip cover 5 so that the flip cover 5 fits the position of the rectangular opening 21 at the rear end of the ventilation box 3, thereby sealing the ventilation box 3. During later maintenance, the flip cover 5 can be flipped in the opposite direction to inspect the internal components through the rectangular opening 21.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A heat-dissipating busbar trunking, comprising two side plates (1) and two cover plates (2), characterized in that: The two side plates (1) are arranged symmetrically from left to right, and the two cover plates (2) are arranged symmetrically from top to bottom. The side plates (1) and the cover plates (2) enclose a closed chamber. Multiple busbars (7) are arranged inside the closed chamber. Cooling fins (18) are arranged inside the multiple busbars (7). Multiple heat dissipation units are arranged at equal intervals along the horizontal direction inside the cover plate (2) located above. The multiple heat dissipation units also include a ventilation box (3), a controller (4), a drainage box (6), a micro motor (13), and a synchronous belt assembly (23); The ventilation box (3) is embedded inside the upper cover plate (2). The drainage box (6) is inserted into the ventilation box (3) at an angle on one side and near the top. A rectangular opening (21) is provided at the rear end of the ventilation box (3). A sealing element is provided on the outer wall of the rear end of the ventilation box (3) corresponding to the rectangular opening (21). A rotating shaft (14) is rotatably installed at the bottom inside the ventilation box (3). Heat dissipation rods (10) are respectively fitted on the outside of the rotating shaft (14) near the gap between two adjacent busbars (7). A temperature sensor (11) is provided on the upper surface of one end of the heat dissipation rod (10). A cooling liquid injection component is provided inside the end of the heat dissipation rod (10) away from the temperature sensor (11).

2. The heat-dissipating busbar trunking according to claim 1, characterized in that, The cooling liquid injection component includes a liquid injection pipe (15) connected to the end of the heat sink (10) away from the temperature sensor (11), and the liquid injection pipe (15) is threaded with a cap (25).

3. The heat-dissipating busbar trunking according to claim 1, characterized in that, The sealing element includes a bracket (17) symmetrically installed on the outer wall of the rear end of the ventilation box (3) and below the rectangular opening (21). A shaft connecting seat (16) is rotatably installed inside both brackets (17). A flip cover plate (5) is installed on the top of the two shaft connecting seats (16). A buckle is provided on the top of the outer wall of the rear end of the ventilation box (3).

4. A heat-dissipating busbar trunking according to claim 3, characterized in that, The fastener includes a fixed rod (19) fixedly installed on the upper part of the rear outer wall of the ventilation box (3). A lever (20) is rotatably sleeved on the outside of the fixed rod (19). A buffer pad is provided on the inner surface of the lever (20). The buffer pad is in contact with the outer surface of the flip cover (5).

5. A heat-dissipating busbar trunking according to claim 1, characterized in that, A connecting shaft (24) is rotatably installed on one side inside the ventilation box (3). The synchronous belt assembly (23) is fitted together on the outside of the connecting shaft (24) and the rotating shaft (14). One end of the connecting shaft (24) is connected to the output end of the micro motor (13). The micro motor (13) is fixed to the inner wall of the ventilation box (3) by a fixed bracket (12) with a fixed sleeve.

6. A heat-dissipating busbar trunking according to claim 1, characterized in that, The heat dissipation rod (10) has a flow channel inside, and the inner wall of the flow channel is provided with multiple inclined flow-blocking plates (22), and the multiple flow-blocking plates (22) are arranged at equal intervals along the inside of the flow channel.

7. A heat-dissipating busbar trunking according to claim 1, characterized in that, The drainage box (6) has a slot inside, and a filter window (26) is slidably installed inside the slot.

8. A heat-dissipating busbar trunking according to claim 1, characterized in that, A fixing plate (8) is fixedly installed on the inner wall of the rear end of the ventilation box (3) and below the rectangular opening (21). The inner surface of one side of the fixing plate (8) is connected to the top of the cover plate (2) near the top by a fixing bolt (9) connected by a thread. A controller (4) is fixedly installed on one side of the top of the ventilation box (3).

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