Outdoor electric energy metering box with intelligent temperature control and heat dissipation function

Abstract

This invention discloses an outdoor power metering box with intelligent temperature control and heat dissipation function, belonging to the technical field of power metering boxes. It includes a box body, with heat dissipation fins extending to the outside of the box body fixedly installed on one side of the heat collection plate. A fan is fixedly installed at the bottom of the box body, and a cooling component to improve the heat exchange efficiency of the heat dissipation fins is provided at the bottom of the box body. In this invention, airflow moves along the duct until it reaches the nozzle at the end of the duct. The airflow is uniformly sprayed onto the surface of the heat dissipation fins at high speed. The high-speed airflow continuously flows over the surface of the heat dissipation fins, significantly accelerating the airflow velocity around the heat dissipation fins, thereby greatly improving the heat exchange efficiency between the heat dissipation fins and the outside air, effectively ensuring that the heat dissipation fins always maintain high-efficiency heat dissipation performance.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box technology, and in particular to an outdoor electricity metering box with intelligent temperature control and heat dissipation function. Background Technology

[0002] Outdoor power metering boxes are core outdoor power equipment in power systems used to install power metering instruments, transformers, terminals, and related auxiliary components. They are widely used in residential areas, industrial parks, rural transformer substations, and outdoor utility poles. The internal components of the metering box continuously generate heat during operation. To solve the heat dissipation problem of outdoor power metering boxes, existing technologies generally adopt a combination of internal air cooling and heat dissipation fins. Some heat is dissipated through air circulation inside the box, while the remaining heat is transferred to the outside of the box through the heat dissipation fins, thus achieving internal cooling.

[0003] In existing technologies, the natural airflow velocity in outdoor environments is unstable. Under windless or light wind conditions, the air around the heat dissipation fins is prone to forming a static boundary layer, which significantly reduces the heat exchange efficiency and prevents heat from being dissipated in time. This causes the heat dissipation function of the heat dissipation fins to almost fail, making it difficult to meet the usage requirements. Summary of the Invention

[0004] The purpose of this invention is to provide an outdoor power metering box with intelligent temperature control and heat dissipation function in order to solve the problem of unstable heat exchange efficiency of heat dissipation fins.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An outdoor power metering box with intelligent temperature control and heat dissipation function includes a box body. The side and bottom of the box body are respectively provided with air inlets and air outlets. A support plate is fixedly installed inside the box body. A component assembly is arranged on the support plate. Thermally conductive adhesive is provided on one side of the component assembly. A heat collection plate is provided on one side of the thermally conductive adhesive. Heat dissipation fins extending to the outside of the box body are fixedly installed on one side of the heat collection plate. A fan is fixedly installed at the bottom of the box body. A cooling component to improve the heat exchange efficiency of the heat dissipation fins is provided at the bottom of the box body.

[0006] As a further description of the above technical solution: the cooling component includes an air duct fixedly installed on the box body, with a cylinder fixedly installed at one end of the air duct inside the box body, and a horn-shaped air nozzle fixedly installed at the other end of the air duct outside the box body, with the air outlet of the air nozzle facing the side of the heat dissipation fins.

[0007] As a further description of the above technical solution: a ramp-shaped guide block is fixedly installed inside the air duct, and the connection point between the air duct and the cylinder is located on the lower side of the guide block.

[0008] As a further description of the above technical solution: a side plate is fixedly installed on one side of the box, and a louvered plate is fixedly installed inside the side plate. There are two sets of louvered plates, and a filter plate is arranged between the two sets of louvered plates.

[0009] As a further description of the above technical solution: a movable plate is detachably installed on the top of the side plate, and a sliding groove is opened on the lower surface of the movable plate, and the upper end of the filter plate is movably inserted into the sliding groove.

[0010] As a further description of the above technical solution: a fixing plate is fixedly installed inside the side plate, and the space between a pair of fixing plates forms a limiting area that restricts the position of the filter plate.

[0011] As a further description of the above technical solution: a temperature sensor and a controller are fixedly installed inside the box, and the fan and the temperature sensor are electrically connected to the controller.

[0012] As a further description of the above technical solution: the support plate has holes.

[0013] As a further description of the above technical solution: the lower end of the side plate has an open design.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The airflow moves along the duct until it reaches the nozzle at the end of the duct. The airflow is sprayed evenly onto the surface of the heat dissipation fins at high speed. The high-speed airflow continues to flow over the surface of the heat dissipation fins, which significantly accelerates the airflow around the heat dissipation fins, thereby greatly improving the heat exchange efficiency between the heat dissipation fins and the outside air, and effectively ensuring that the heat dissipation fins always maintain high heat dissipation performance. This airflow guiding and enhanced heat dissipation structure does not require an additional power output device. It uses the fan as the sole power source and makes full use of the airflow generated when the fan is working, thus realizing the secondary utilization of the airflow. This not only simplifies the overall structure and reduces manufacturing costs, but also avoids the increased energy consumption caused by an additional power device, achieving the effect of energy saving and consumption reduction. The overall design is simple, reasonable and highly practical. When it's raining outdoors, rainwater is carried by the airflow towards the air inlet. Taking advantage of the high inertia of raindrops and their inability to quickly change direction with the airflow, the raindrops carried by the airflow will impact the outer louvers due to inertia during the first sharp turn, and be intercepted by the louvers, sliding down their surface. Even if a small number of tiny raindrops overcome inertia and pass over the outer louvers with the airflow, another set of louvers on the inner side will create a secondary barrier, causing the airflow to turn sharply again. The remaining tiny raindrops will then impact the inner louvers again due to inertia and be intercepted. Structurally, this prevents liquid rainwater from entering the chamber, effectively ensuring the dryness of the chamber's interior. Attached Figure Description

[0015] Figure 1 A schematic diagram of the front view structure provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the internal structure of the box provided according to an embodiment of the present invention is shown; Figure 3 A schematic diagram showing the positional relationship between the thermally conductive adhesive, the heat collection plate, and the heat dissipation fins provided according to an embodiment of the present invention is shown. Figure 4 A schematic diagram of a cooling component structure provided according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the louvered plate and filter plate structure provided according to an embodiment of the present invention is shown; Figure 6 A schematic cross-sectional view of the side plate structure provided according to an embodiment of the present invention is shown; Figure 7 A schematic diagram showing the connection relationship between the filter plate and the movable plate according to an embodiment of the present invention is shown; Figure 8 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of point A in the middle; Figure 9 The present invention provides an embodiment of the invention. Figure 7 Enlarged diagram of point B in the middle.

[0016] Legend: 1. Housing; 11. Air inlet; 12. Air outlet; 13. Fan; 14. Support plate; 15. Component assembly; 16. Thermal conductive adhesive; 17. Heat collection plate; 18. Heat dissipation fins; 2. Air duct; 21. Cylinder; 22. Air nozzle; 3. Guide block; 4. Side plate; 41. Louvered plate; 42. Filter plate; 5. Movable plate; 51. Slide rail; 6. Fixed plate; 7. Temperature sensor; 71. Controller. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: This example provides an outdoor power metering box with intelligent temperature control and heat dissipation function. See [link to example]. Figure 1 - Figure 9Specifically, the enclosure includes a housing 1, with an air inlet 11 and an air outlet 12 on the side and bottom of the housing 1, respectively. A support plate 14 is fixedly installed inside the housing 1, and a component assembly 15 is provided on the support plate 14. Thermal conductive adhesive 16 is provided on one side of the component assembly 15, and a heat collection plate 17 is provided on one side of the thermal conductive adhesive 16. A heat dissipation fin 18 extending to the outside of the housing 1 is fixedly installed on one side of the heat collection plate 17, and a fan 13 is fixedly installed at the bottom of the housing 1. During operation, the internal component assembly 15 of the electricity metering box continuously generates a large amount of heat. The fan 13 immediately starts and enters working mode. Driven by the fan 13, the hot air inside the box 1 is quickly guided to the air outlet 12 and blown out of the box 1. As the hot air continues to be discharged, a stable negative pressure environment is formed inside the box 1. At this time, ambient air from the outside, under the influence of atmospheric pressure difference, quickly enters the box 1 through the pre-set air inlet 11, forming a complete hot and cold air circulation loop inside and outside the box 1. The ambient air entering the box can quickly flow over the surface of the component assembly 15, fully absorbing the heat emitted by the component assembly 15, and then is drawn out of the box by the fan 13. This cycle repeats continuously, continuously removing heat from the surface of the component assembly 15, achieving efficient forced air cooling of the component assembly 15, and effectively preventing heat from accumulating inside the box 1 and forming a heat island effect. Meanwhile, most of the heat generated by the component assembly 15 is efficiently transferred through the tightly bonded thermally conductive adhesive 16. The thermally conductive adhesive 16 has excellent thermal conductivity and can quickly conduct the concentrated heat on the surface of the component assembly 15 to the heat collection plate 17 fixedly connected to it. The heat collection plate 17 is made of a material with high thermal conductivity and can quickly and evenly conduct the dispersed absorbed heat to the heat dissipation fins 18 fixed on its surface. The heat on the surface of the heat dissipation fins 18 can fully and efficiently exchange heat with the ambient temperature air outside the housing 1. The heat is quickly dissipated to the external environment through heat conduction and heat convection, thereby achieving passive heat conduction and cooling of the component assembly 15. Forced air cooling and passive heat conduction work together synergistically to complement each other, effectively optimizing the overall cooling effect of component assembly 15. This ensures that component assembly 15 always operates within a safe and stable temperature range, guaranteeing the normal operation of the power metering box.

[0019] Holes are provided on the support plate 14; The support plate 14 has several evenly distributed holes, so that the bottom of the component assembly 15 is not completely blocked by the support plate 14. This effectively breaks the closed contact state between the bottom of the component assembly 15 and the support plate 14, and provides sufficient space for heat dissipation from the bottom from a structural point of view, further improving the heat dissipation reliability of the entire power metering box.

[0020] In outdoor environments, the natural airflow velocity is unstable. Under windless or light wind conditions, the air around the heat dissipation fins 18 is prone to forming a static boundary layer, which significantly reduces the heat exchange efficiency. In order to solve the problem of unstable heat exchange efficiency of the heat dissipation fins 18, a cooling component to improve the heat exchange efficiency of the heat dissipation fins 18 is provided at the bottom of the housing 1. The cooling component includes a duct 2 fixedly installed on the housing 1. A cylinder 21 is fixedly installed at one end of the duct 2 inside the housing 1, and a horn-shaped nozzle 22 is fixedly installed at the other end of the duct 2 outside the housing 1. The air outlet of the nozzle 22 faces the side of the heat dissipation fins 18. A ramp-shaped guide block 3 is fixedly installed inside the duct 2. The connection point between the duct 2 and the cylinder 21 is located at the lower side of the guide block 3. After the fan 13 starts working, a portion of the airflow it generates is precisely guided into the cylinder 21. A guide block 3 is fixedly installed inside the cylinder 21. This guide block 3 adopts an inclined structure design with one end higher and the other lower, and its inclination angle is precisely adapted to efficiently guide the airflow entering the cylinder 21. When the airflow enters the cylinder 21, it will naturally flow smoothly from the higher side to the lower side of the guide block 3 under its guidance, avoiding turbulence and stagnation within the cylinder 21, and ensuring that the airflow is precisely guided to the connection point between the duct 2 and the cylinder 21. Due to the guiding effect of the guide block 3, the airflow can smoothly and unobstructedly enter the interior of the air duct 2. The airflow will move along the air duct 2 until it reaches the air nozzle 22 at the end of the air duct 2. The airflow is sprayed evenly onto the surface of the heat dissipation fins 18 at high speed. The high-speed airflow continues to flow over the surface of the heat dissipation fins 18, significantly accelerating the airflow speed around the heat dissipation fins 18, thereby greatly improving the heat exchange efficiency between the heat dissipation fins 18 and the outside air, effectively ensuring that the heat dissipation fins 18 always maintain high-efficiency heat dissipation performance. It is worth noting that the airflow guiding and enhanced heat dissipation structure does not require an additional power output device. It directly uses the fan 13 as the sole power source, making full use of the airflow generated when the fan 13 is working, thus realizing the secondary utilization of airflow. This not only simplifies the overall structure and reduces manufacturing costs, but also avoids the increased energy consumption caused by an additional power device, achieving the effect of energy saving and consumption reduction. The overall design is simple, reasonable, and highly practical.

[0021] A temperature sensor 7 and a controller 71 are fixedly installed inside the housing 1. The fan 13 and the temperature sensor 7 are electrically connected to the controller 71. Temperature sensor 7 can accurately and in real-time acquire the ambient temperature inside the enclosure 1. It features a stable acquisition frequency and high temperature detection accuracy, effectively capturing subtle changes in the internal temperature. Temperature sensor 7 continuously transmits the real-time acquired internal temperature signal to the controller 71, which is electrically connected to it. The controller 71 has preset temperature thresholds (including high-temperature start-up threshold and low-temperature stop-down threshold) that meet the operating requirements of the components. These thresholds can be flexibly adjusted according to differences in outdoor environments and the rated operating temperature of the components, adapting to the usage requirements of different scenarios. When the temperature signal received by the controller 71 reaches the preset high-temperature threshold, it immediately triggers a temperature control command, quickly controlling the fan 13 to start and operate at the corresponding speed. If the internal temperature continues to rise, the controller 71 will synchronously adjust the speed of fan 13, increasing the fan speed as the temperature rises, further enhancing the airflow rate inside the enclosure 1. Conversely, when the temperature sensor 7 detects that the temperature inside the chamber 1 drops to the preset low temperature stop threshold, it will promptly send a signal to the controller 71. The controller 71 will then issue a command to control the fan 13 to slow down and stop working, thus avoiding energy waste caused by the fan 13 running idly. This intelligent temperature control mechanism achieves automated adaptation of the heat dissipation process through real-time monitoring by temperature sensor 7 and precise command output by controller 71. It can dynamically adjust the heat dissipation state according to the temperature change inside the box without manual intervention. This not only gives the box 1 a reliable intelligent temperature control and heat dissipation function, but also effectively avoids problems such as component aging and metering inaccuracy caused by excessive temperature. At the same time, it reduces unnecessary energy consumption, balances temperature control reliability and energy saving, and further improves the working stability and practicality of the power metering box. Among them, the temperature sensor 7 is model MBT3270.

[0022] A side panel 4 is fixedly installed on one side of the housing 1. A louvered plate 41 is fixedly installed inside the side panel 4. There are two sets of louvered plates 41. A filter plate 42 is arranged between the two sets of louvered plates 41. The lower end of the side panel 4 is designed to be open. The side plate 4 is located on the outer side of the air inlet 11 and is equipped with a louvered plate 41 and a filter plate 42, which together constitute the front protection and filtration assembly of the air inlet 11. When air enters the housing 1 through the air inlet 11, it must first pass through the louvered plate 41 and the filter plate 42 in sequence. The filter plate 42 can effectively intercept dust, fine particles, flocculent impurities and other particles carried in the air, effectively preventing dust and debris from entering the housing 1, preventing the heat dissipation channel from being blocked by dust accumulation and reducing the heat exchange efficiency. At the same time, it can also prevent dust from corroding the component pins, ensuring the heat dissipation performance and working stability of the component assembly 15, and extending its service life. When it is raining outdoors, rainwater will be carried by the airflow towards the air inlet 11. At this time, taking advantage of the physical property that the rainwater droplets have great inertia and are difficult to follow the airflow to change direction quickly, the rainwater droplets carried by the airflow will hit the surface of the outer louver 41 due to inertia when they make the first sharp turn, and will be intercepted by the louver 41 and slide down the surface of the louver 41. Even if a small number of small water droplets overcome inertia and pass over the outer louver 41 with the airflow, another set of louver 41 on the inner side will form a secondary barrier, causing the airflow to make another sharp turn. The remaining small raindrops will hit the inner louver 41 again due to inertia and be intercepted. Structurally, this prevents liquid rainwater from entering the interior of the box 1, effectively ensuring the dryness of the interior cavity of the box 1, avoiding short circuits, creepage, corrosion and other failures of the internal electrical components due to moisture or water, and ensuring the safe and stable operation of the power metering box. Meanwhile, an independent buffer cavity is formed between the two sets of louvers 41. This cavity not only provides ample space for airflow deflection but also provides a natural settling environment for the initially intercepted fine water mist and suspended water droplets. The intercepted fine water droplets will condense together in the buffer cavity to form larger droplets, which will gradually settle under gravity, further reducing the possibility of water vapor entering the chamber. The lower end of the side panel 4 is specially designed with an open drainage structure. Rainwater intercepted by the louvered panel 41, as well as water that settles in the buffer cavity, will flow naturally along the guide path of the louvered panel 41 and the inner wall of the side panel 4 to the opening at the lower end of the side panel 4 and be discharged directly to the outside of the box 1.

[0023] A movable plate 5 is detachably installed on the top of the side plate 4. A groove 51 is provided on the lower surface of the movable plate 5. The upper end of the filter plate 42 is movably inserted into the groove 51. A fixed plate 6 is fixedly installed inside the side plate 4. The space between a pair of fixed plates 6 forms a limiting area that restricts the position of the filter plate 42. After long-term use, a large amount of dust and impurities will accumulate on the surface of the filter plate 42, resulting in a decrease in filtration efficiency. At this time, the filter plate 42 needs to be replaced or cleaned. First, remove the movable plate 5 from the side plate 4. Since the filter plate 42 is mounted on the movable plate 5, it will be removed along with the movable plate 5. After removing the movable plate 5, simply slide the filter plate 42 smoothly along the extension direction of the slide groove 51 until it is completely disengaged from the slide groove 51. Then, align the cleaned and dried filter plate 42, or a brand new filter plate 42, with the slide groove 51 on the movable plate 5 and push it smoothly into the slide groove 51 until it reaches the limit position of the slide groove 51. This completes the assembly of the filter plate 42 with the movable plate 5. Finally, reposition the movable plate 5 with the assembled filter plate 42 and install it in the preset installation position on the side plate 4. This completes the replacement or cleaning operation of the entire filter plate 42. The entire operation process is simple and easy to understand, with concise steps, and can be completed quickly, significantly reducing the workload of maintenance personnel and improving maintenance efficiency. Two sets of fixing plates 6 are arranged in parallel, forming a limiting area that matches the size of the filter plate 42. During the installation of the filter plate 42, this limiting area provides precise positioning and guidance, allowing the filter plate 42 to be quickly aligned with the slide groove 51 without repeated adjustments, effectively improving the installation efficiency and preventing the filter plate 42 from malfunctioning due to misalignment. During operation, the two sets of fixing plates 6 can limit and constrain the filter plate 42 from both sides, firmly fixing its position and ensuring that the filter plate 42 remains vertical, preventing tilting, shifting, or loosening due to airflow impact or equipment vibration. Maintaining the vertical position of the filter plate 42 ensures that its entire filter surface can evenly receive the incoming airflow, maximizing its filtration effect and preventing unfiltered airflow from entering the housing 1 due to tilting. This ensures the filter plate 42 effectively filters dust and impurities from the air, continuously providing a clean working environment for the components inside the housing.

[0024] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An outdoor power metering box with intelligent temperature control and heat dissipation function, characterized in that, include: The box (1) has an air inlet (11) and an air outlet (12) on its side and bottom respectively. A support plate (14) is fixedly installed inside the box (1). A component assembly (15) is provided on the support plate (14). A thermally conductive adhesive (16) is provided on one side of the component assembly (15). A heat collection plate (17) is provided on one side of the thermally conductive adhesive (16). A heat dissipation fin (18) extending to the outside of the box (1) is fixedly installed on one side of the heat collection plate (17). A fan (13) is fixedly installed at the bottom of the box (1). A cooling component to improve the heat exchange efficiency of the heat dissipation fin (18) is provided at the bottom of the box (1).

2. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 1, characterized in that, The cooling component includes a duct (2) fixedly installed on the housing (1). A cylinder (21) is fixedly installed at one end of the duct (2) inside the housing (1), and a horn-shaped nozzle (22) is fixedly installed at the other end of the duct (2) outside the housing (1), with the nozzle (22) outlet facing the side of the heat dissipation fins (18).

3. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 2, characterized in that, The air duct (2) is fixedly installed with a sloping guide block (3), and the connection point between the air duct (2) and the cylinder (21) is located on the lower side of the guide block (3).

4. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 1, characterized in that, A side plate (4) is fixedly installed on one side of the box (1), and a louvered plate (41) is fixedly installed inside the side plate (4). There are two sets of louvered plates (41), and a filter plate (42) is provided between the two sets of louvered plates (41).

5. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 4, characterized in that, The top of the side plate (4) is detachably fitted with a movable plate (5), and a groove (51) is provided on the lower surface of the movable plate (5). The upper end of the filter plate (42) is movably inserted into the groove (51).

6. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 4, characterized in that, A fixing plate (6) is fixedly installed inside the side plate (4), and the space between the pair of fixing plates (6) forms a limiting area that restricts the position of the filter plate (42).

7. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 1, characterized in that, A temperature sensor (7) and a controller (71) are fixedly installed inside the housing (1). The fan (13) and the temperature sensor (7) are electrically connected to the controller (71).

8. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 1, characterized in that, The support plate (14) has holes.

9. An outdoor power metering box with intelligent temperature control and heat dissipation function according to claim 4, characterized in that, The lower end of the side plate (4) is designed with an opening.

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