Modular electricity metering box

Abstract

The application provides a modular power metering box, and relates to the technical field of power metering equipment.The box body and the box door form an installation cavity for installing various components between the inside of the box body and the box door;the top end inner wall and the bottom end inner wall of the inside of the box body are both provided with heat dissipation strip holes;the installation cavity is detachably provided with a modular heat dissipation mechanism;the heat dissipation mechanism comprises inner heat dissipation blocks which are respectively and tightly installed on the top end and the bottom end inner wall of the installation cavity and correspond to the openings of the two heat dissipation strip holes;the installation cavity is detachably provided with a partition plate which is installed on the opening position of the heat exchange groove;the installation cavity is vertically provided with a guide pipe which is vertically arranged on the middle position of the end face of the partition plate;the installation cavity is provided with a guide fan which is installed in the guide pipe;the end face of one end of the inner heat dissipation block is provided with a heat exchange groove;the installation cavity is provided with a heat dissipation assembly which is arranged in the heat exchange groove;the end face of the partition plate is provided with an air inlet and outlet strip hole which has a ring structure.The application realizes high-efficiency heat dissipation under high protection level through the combination of internal and external heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of power metering equipment technology, specifically a modular power metering box. Background Technology

[0002] On the user side of a power system, electricity metering boxes are essential devices for installing metering equipment such as electricity meters and instrument transformers. Depending on the environment, electricity metering boxes can be categorized as indoor or outdoor types. Outdoor electricity metering boxes are exposed to the natural environment for extended periods and must simultaneously meet multiple protection requirements, including heat dissipation, dust prevention, and moisture protection.

[0003] In existing technologies, the heat dissipation design of outdoor power metering boxes mainly faces the following technical challenges:

[0004] First, there is a fundamental contradiction between heat dissipation and protection. To ensure the normal operating temperature of the internal electrical components, the metering box needs ventilation holes to achieve air convection heat dissipation; however, ventilation holes allow external substances such as dust, moisture, and insects to enter the box, accelerating the aging of electrical components, reducing metering accuracy, and even causing short circuits. Traditional solutions attempt to provide protection by installing dust filters and louvers at the ventilation holes, but these filters and louvers severely obstruct airflow, significantly reducing heat dissipation efficiency.

[0005] Secondly, the internal airflow organization of existing heat dissipation structures is disordered. Some improved products add fans inside the enclosure for forced air cooling, but the operation of the fans causes turbulent airflow inside the enclosure, easily forming local hot spots and failing to create an effective circulating heat dissipation path, resulting in limited heat dissipation. At the same time, the operation of the fans directly draws in high-humidity outside air into the enclosure, causing condensation inside and potentially leading to short circuit failures.

[0006] Furthermore, the application of heat pipe heat conduction technology in the field of electricity metering boxes is still immature. In existing metering box solutions that use heat pipes for heat dissipation, the heat pipes usually serve only as a single heat conduction path, with limited heat exchange area, and the connection between the heat pipes and the external heat dissipation structure is simple, resulting in low heat dissipation efficiency. At the same time, existing solutions lack a modular design concept, and the same box cannot meet both indoor and outdoor usage scenarios, resulting in high production and usage costs.

[0007] Therefore, developing an energy metering box that can simultaneously meet the requirements of efficient heat dissipation, high-level protection, modular and convenient installation, and orderly internal airflow circulation has significant practical implications and broad application prospects. Summary of the Invention

[0008] To address the above problems, the present invention provides a modular power metering box.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a modular power metering box, comprising a box body and a door installed on the box body. When the door is sealed and installed on the box body, an installation cavity for installing various components is formed between the inside of the box body and the door. Heat dissipation strip holes are provided on the top inner wall and the bottom inner wall of the box body. Dustproof nets can be detachably installed on the outside of the box body at the opening positions of the two heat dissipation strip holes.

[0010] A modular heat dissipation mechanism is detachably installed inside the mounting cavity. The heat dissipation mechanism includes an inner heat dissipation block that is sealed and installed on the inner wall of the top and bottom of the mounting cavity and corresponds to the opening of the two heat dissipation strip holes, a partition that is detachably installed at the opening of the heat exchange groove, a guide tube that is vertically inserted through the middle of the end face of the partition, a guide fan installed in the guide tube, a heat exchange groove opened on one end face of the inner heat dissipation block, and a heat dissipation component installed in the heat exchange groove. An inlet and outlet air strip holes with an annular structure are opened at the edge of the end face of the partition. The heat dissipation component controls the airflow entering the heat exchange groove to flow in a spiral direction and dissipates heat from the airflow.

[0011] The airflow fan on the lower inner heat sink is configured to guide airflow into the heat exchange tank through the guide tube, and after being cooled by the spiral flow of the heat dissipation component, it is discharged through the air inlet and outlet holes; the discharged airflow enters its heat exchange tank through the air inlet and outlet holes of the partition on the upper inner heat sink, and after being cooled by the spiral flow, it is discharged again, forming a circulating cooling of the airflow inside the mounting cavity.

[0012] Preferably, the heat dissipation assembly includes an inner limiting tube with one end vertically disposed on the bottom wall of the heat exchange tank and the other end connected to the end of the guide tube, an outer limiting tube sleeved on the outer ring of the inner limiting tube, multiple heat exchange strips arranged in a circumferential array between the inner limiting tube body and the inner wall of the outer limiting tube, and heat dissipation components disposed on the heat exchange strips. The heat exchange strips are respectively installed on the inner limiting tube body and the inner wall of the outer limiting tube on both sides, and the length direction of the heat exchange strips is arranged along the spiral direction. A spiral channel for airflow is formed between two adjacent heat exchange strips. The inner limiting tube and the outer limiting tube body are provided with an inner through port and an outer through port that communicate with the spiral channel.

[0013] Preferably, the heat dissipation component includes multiple heat pipes that are one-to-one corresponding to each other and pass through the heat exchange strip along the length of the heat exchange strip, with one end perpendicularly passing through the end face of the inner heat dissipation block away from the heat exchange groove, and a heat dissipation structure installed on the housing to dissipate heat from the part of the heat pipe that passes through the outside of the housing. When the two inner heat dissipation blocks are installed on the top and bottom of the mounting cavity, the heat pipes that pass through the end face of the inner heat dissipation block pass through the heat dissipation strip hole.

[0014] Preferably, the heat dissipation structure includes an outer heat dissipation block with a heat dissipation groove at the bottom, a plurality of heat dissipation plates that are equally spaced and parallel to each other in the heat dissipation groove, a heat dissipation fan that is set in a heat dissipation port on the symmetrical side of the outer heat dissipation block, and a filter plate installed at the opening of the heat dissipation port. The plurality of heat dissipation plates have connection holes that can be fitted onto the heat pipes that protrude from the housing.

[0015] Preferably, when the end of the heat pipe protrudes from the casing and extends into the external heat sink, the end of the heat pipe and the connection hole are tightly fitted together by interference fit or thermally conductive adhesive.

[0016] Preferably, the opening area at the end of the guide tube is equal to the opening area of ​​the air inlet / outlet holes.

[0017] Preferably, the opening position of the air inlet / outlet strip is provided with a guide strip to control the airflow to flow in an inclined direction away from the inner heat sink and the guide tube.

[0018] Preferably, an annular sealing ring is installed between the contact surface between the inner heat sink and the inner wall of the mounting cavity, and a sealing rubber ring is provided between the part of the heat pipe that exits the casing and the heat sink hole.

[0019] Preferably, it also includes an intelligent temperature control system, which includes a temperature sensor installed inside the cabinet, a second temperature sensor installed inside the external heat sink, a humidity sensor installed outside the cabinet, and a controller electrically connected to the temperature sensor, the second temperature sensor, and the humidity sensor. The controller is electrically connected to the cooling fan and the airflow fan respectively, and the controller controls the start, stop, and speed of the cooling fan and the airflow fan according to the feedback signal of the temperature sensor.

[0020] Preferably, when the internal temperature of the enclosure is lower than the first preset threshold, neither the cooling fan nor the airflow fan works; when the internal temperature of the enclosure is higher than the first preset threshold but lower than the second preset threshold, the controller controls the cooling fan and the airflow fan to run at the first speed; when the internal temperature of the enclosure is higher than the second preset threshold, the controller controls the cooling fan and the airflow fan to run at the second speed; when the external humidity sensor detects that the humidity is higher than the preset threshold, the controller pauses the operation of the cooling fan and the airflow fan.

[0021] The beneficial effects of this invention are:

[0022] 1. The present invention provides an inner limiting tube, an outer limiting tube, and heat exchange strips arranged in a spiral direction within the inner heat dissipation block. A spiral channel is formed between adjacent heat exchange strips, and the airflow rotates and flows within the spiral channel, which significantly increases the heat exchange time and contact area between the airflow and the heat exchange strips, and effectively improves the heat exchange efficiency.

[0023] 2. This invention constructs a multi-level heat transfer architecture consisting of "coordinated circulation of upper and lower inner heat dissipation blocks - heat exchange through spiral channels - heat pipe conduction - air cooling of external heat dissipation blocks". The lower inner heat dissipation block draws in cold air into the heat exchange tank, cools it, and then discharges it. The upper inner heat dissipation block draws in hot air, cools it, and then discharges it, forming an orderly airflow organization from top to bottom. This fully utilizes the principle of natural upward movement of hot air, effectively avoiding airflow short-circuiting and making the temperature distribution inside the chamber more uniform.

[0024] 3. This invention utilizes heat pipe conduction technology in its modular heat dissipation mechanism to transfer heat from inside the enclosure to external heat sinks for dissipation. This achieves highly efficient heat dissipation without requiring any ventilation holes directly connecting the enclosure to the outside. Compared to existing technologies that rely on ventilation holes for air exchange, this invention significantly improves heat dissipation efficiency while maintaining a high level of protection, completely resolving the long-standing technical contradiction between heat dissipation and protection.

[0025] 4. When used indoors, the enclosure of this invention can directly rely on natural convection for heat dissipation through the ventilation holes and dustproof mesh. When it needs to be installed outdoors, there is no need to replace the enclosure; simply installing a modular heat dissipation mechanism inside the installation cavity is sufficient to achieve the conversion of heat dissipation performance. This "one enclosure, multiple uses" design concept reduces manufacturing costs and improves product applicability and ease of use.

[0026] 5. This invention integrates a temperature sensor, a humidity sensor, and a controller, which can adjust the operating status of the cooling fan and the airflow fan in real time according to the temperature and humidity inside and outside the enclosure, achieving intelligent temperature and humidity control. When the external humidity is high, it automatically stops active cooling to prevent moisture intrusion, effectively avoiding the problem of condensation caused by the fan drawing in high-humidity air in traditional solutions. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a simplified structural diagram of the modular energy metering box proposed in this invention.

[0029] Figure 2 This is a schematic diagram of the internal heat sink of the present invention installed inside the housing.

[0030] Figure 3 This is a schematic diagram of the unfolded structure of the heat dissipation mechanism for mounting the enclosure according to the present invention.

[0031] Figure 4 This is a schematic diagram of the box structure of the present invention.

[0032] Figure 5 This is a schematic diagram of the heat dissipation mechanism of the present invention.

[0033] Figure 6 This is a bottom view of the heat dissipation mechanism of the present invention.

[0034] Figure 7 This is a schematic diagram of the heat dissipation structure of the present invention.

[0035] Figure 8 This is a schematic diagram of the heat sink structure of the present invention.

[0036] Figure 9 This is a schematic diagram of the internal structure of the heat exchange tank of the present invention.

[0037] Figure 10 This is a schematic diagram of the heat exchange bar structure of the present invention.

[0038] In the diagram: 1. Housing; 2. Heat dissipation strip holes; 3. Inner heat dissipation block; 4. Outer heat dissipation block; 5. Heat dissipation vent; 6. Filter plate; 7. Door; 8. Partition plate; 9. Guide tube; 10. Heat dissipation groove; 11. Cooling fan; 12. Heat dissipation plate; 13. Air guide fan; 14. Inlet and outlet air strip holes; 15. Guide strip; 16. Heat exchange groove; 17. Inner limiting tube; 18. Heat exchange strip; 19. Outer limiting tube; 20. Heat pipe; 21. Inner through-hole; 22. Outer through-hole. Detailed Implementation

[0039] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.

[0040] Currently, outdoor electricity metering boxes commonly suffer from poor heat dissipation and protection failure during long-term use. Taking a typical outdoor metering box as an example, its casing usually has strip-shaped ventilation holes and a dust filter, relying on natural air convection for heat dissipation. In high-temperature environments during summer, the internal temperature often exceeds 70°C, severely affecting the metering accuracy and lifespan of the electricity meter. Simultaneously, the dust filter is easily clogged with dust, further worsening the heat dissipation effect. Some improved products add fans inside the box for forced air cooling, but the fan's operation draws in high-humidity outside air, causing internal condensation and potentially leading to short circuits.

[0041] Some solutions employ heat pipe-assisted cooling, such as fixing a heat-conducting plate to the back panel of the enclosure and transferring heat to external heat sinks via heat pipes. However, this solution has a limited number of heat pipes, a small heat exchange area, and the external heat sinks rely solely on natural convection, resulting in limited cooling capacity. Furthermore, these solutions do not consider the orderly circulation of air inside the enclosure, making it difficult to eliminate localized hotspots. More importantly, existing solutions lack modular design; indoor and outdoor enclosures are not interchangeable, increasing production and inventory costs.

[0042] To address the problems of heat dissipation and protection in existing power metering boxes, this invention proposes a modular power metering box that facilitates modular installation, provides efficient heat dissipation, and enables orderly airflow circulation. The invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0043] Example 1: Reference Figures 1-10 The modular power metering box shown includes a box body 1 and a door 7 installed on the box body 1. When the door 7 is sealed and installed on the box body 1, an installation cavity for installing various components is formed between the inside of the box body 1 and the door 7. Heat dissipation strip holes 2 are provided on the top inner wall and the bottom inner wall of the box body 1. Dustproof nets can be detachably installed on the outside of the box body 1 at the opening positions of the two heat dissipation strip holes 2.

[0044] A modular heat dissipation mechanism is detachably installed inside the mounting cavity. The heat dissipation mechanism includes an inner heat dissipation block 3 that is sealed and installed on the inner wall of the top and bottom of the mounting cavity and corresponds to the opening of the two heat dissipation strip holes 2; a partition 8 that is detachably installed at the opening of the heat exchange groove 16; a guide tube 9 that is vertically inserted through the middle of the end face of the partition 8; a guide fan 13 installed in the guide tube 9; a heat exchange groove 16 is opened on one end face of the inner heat dissipation block 3; and a heat dissipation component is set in the heat exchange groove 16. An annular air inlet and outlet strip hole 14 is opened at the edge of the end face of the partition 8. The heat dissipation component controls the airflow entering the heat exchange groove 16 to flow in a spiral direction and dissipates heat from the airflow.

[0045] The airflow fan 13 on the lower inner heat sink 3 is configured to introduce airflow into the heat exchange tank 16 through the guide pipe 9, and after the heat dissipation component is cooled by spiral flow, it is discharged through the air inlet and outlet holes 14; the discharged airflow enters the heat exchange tank 16 through the air inlet and outlet holes 14 of the partition 8 on the upper inner heat sink 3, and after the heat dissipation is cooled by spiral flow, it is discharged again, forming a circulating heat dissipation of the airflow inside the mounting cavity.

[0046] The airflow fan 13 on the upper inner heat sink 3 starts synchronously, drawing hot air from the upper part of the mounting cavity into its heat exchange slot 16 through the air inlet and outlet holes 14. After being cooled by spiral flow, it is discharged from the guide pipe 9, thus forming a complete airflow circulation inside the mounting cavity.

[0047] In this embodiment, when the modular heat dissipation mechanism is detachably installed inside the mounting cavity, the guide fan 13 on the lower inner heat dissipation block 3 is activated, guiding airflow through the guide pipe 9 into its heat exchange groove 16. The heat dissipation assembly controls the airflow to flow in a spiral direction and dissipate heat. The cooled airflow is discharged into the mounting cavity through the annular air inlet / outlet holes 14 on the edge of the partition 8. The discharged airflow then enters its heat exchange groove 16 through the air inlet / outlet holes 14 on the upper inner heat dissipation block 3, and is discharged after being cooled again by spiral flow, thus forming an orderly airflow circulation from bottom to top inside the mounting cavity. Through the coordinated work of the upper and lower inner heat dissipation blocks 3 and the efficient heat exchange of the spiral heat dissipation assembly, the airflow in the mounting cavity is circulated and cooled, effectively eliminating local hot spots, while maintaining the high sealing protection level of the housing 1, and taking into account different indoor and outdoor usage scenarios with the help of modular design.

[0048] The airflow entering the heat exchange tank 16 is controlled to flow in a spiral direction, and heat is simultaneously dissipated from the airflow. This embodiment provides the following solution:

[0049] like Figures 1-4 and Figures 8-9 As shown, the heat dissipation assembly includes an inner limiting tube 17 with one end vertically mounted on the bottom wall of the heat exchange tank 16 and the other end connected to the end of the guide tube 9; an outer limiting tube 19 sleeved on the outer ring of the inner limiting tube 17; multiple heat exchange strips 18 arranged in a circumferential array between the inner wall of the inner limiting tube 17 and the inner wall of the outer limiting tube 19; and heat dissipation components disposed on the heat exchange strips 18. The heat exchange strips 18 are respectively mounted on the inner wall of the inner limiting tube 17 and the inner wall of the outer limiting tube 19, and the length direction of the heat exchange strips 18 is arranged along the spiral direction. A spiral channel for airflow is formed between two adjacent heat exchange strips 18. The inner limiting tube 17 and the outer limiting tube 19 are provided with an inner through port 21 and an outer through port 22 that communicate with the spiral channel.

[0050] In this embodiment, the airflow enters the inner limiting tube 17 through the guide tube 9, and then flows dispersed into the spiral channel formed by adjacent heat exchange bars 18 through the inner through-hole 21. It rotates and flows in the spiral direction, fully exchanging heat with the heat exchange bars 18, before entering the space between the outer limiting tube 19 and the heat exchange groove 16 through the outer through-hole 22, and finally exiting through the air inlet / outlet holes 14. Simultaneously, the heat dissipation components on the heat exchange bars 18 conduct the absorbed heat to the outside of the housing. The forced rotation of the airflow through the spiral channel significantly increases the heat exchange path and contact area between the airflow and the heat exchange bars, improving heat exchange efficiency. The heat dissipation components then remove heat from the housing, achieving efficient and compact internal cooling.

[0051] It is understandable that heat dissipation can be achieved through various methods for the heat exchange bar 18. This embodiment provides the following solution:

[0052] like Figures 8-10As shown, the heat sink includes multiple heat pipes 20 that are one-to-one corresponding to each other and pass through the heat exchange bar 18 along the length of the heat exchange bar 18, with one end perpendicularly passing out of the inner heat sink 3 away from the end face of the heat exchange groove 16, and a heat sink structure installed on the housing 1 to dissipate heat from the part of the heat pipe 20 that passes out of the housing 1. When the two inner heat sinks 3 are installed on the top and bottom of the mounting cavity, the heat pipes 20 that pass through the end face of the inner heat sink 3 pass through the heat sink hole 2.

[0053] like Figures 5-8 As shown, the heat dissipation structure includes an outer heat dissipation block 4 with a heat dissipation groove 10 at the bottom, a plurality of heat dissipation plates 12 that are equally spaced and parallel to each other in the heat dissipation groove 10, a heat dissipation fan 11 that is set in a heat dissipation port 5 on the symmetrical side of the outer heat dissipation block 4, and a filter plate 6 installed at the opening position of the heat dissipation port 5. The plurality of heat dissipation plates 12 have connection holes that can be fitted onto the part of the heat pipe 20 that passes through the box body 1.

[0054] In this embodiment, the heat absorbed by the heat exchange strip 18 is transferred to the heat pipe 20 that runs through it. The heat pipe 20 quickly conducts the heat to its other end. This end passes through the heat dissipation strip hole 2 and extends into the heat dissipation groove 10 at the bottom of the outer heat dissipation block 4. By tightly fitting with the connection hole on the heat dissipation plate 12, the heat is transferred to multiple parallel heat dissipation plates 12. At the same time, the cooling fan 11 installed in the heat dissipation port 5 on the symmetrical side of the outer heat dissipation block 4 is activated, driving external cold air to flow across the surface of the heat dissipation plate 12 and carry away the heat. The hot air is discharged from the heat dissipation port 5 on the other side, and the filter plate 6 filters the incoming and outgoing air. The high thermal conductivity of the heat pipe 20 allows the internal heat to be discharged to the outside of the box without loss. By combining the heat dissipation plate 12 with the increased heat dissipation area and forced air cooling, efficient external heat dissipation is achieved, ensuring that the inner heat dissipation block 3 continues to maintain a low temperature, thereby ensuring the circulating cooling capacity of the spiral channel for airflow.

[0055] like Figures 5-7 As shown, when the end of the heat pipe 20 protrudes from the casing 1 and extends into the outer heat sink 4, the end of the heat pipe 20 and the connection hole are tightly fitted by interference fit or thermally conductive adhesive.

[0056] In this embodiment, during assembly, the end of the heat pipe 20 protruding from the housing 1 extends into the outer heat sink 4. Its end is tightly fitted to the connection hole on the heat sink 12 through an interference fit or thermally conductive adhesive, eliminating contact thermal resistance. This ensures that the heat dissipated by the heat pipe 20 can be efficiently and with low loss transferred to the heat sink 12, avoiding heat conduction attenuation caused by air gaps, thereby maximizing the cooling efficiency of the external heat dissipation structure.

[0057] The opening area at the end of the guide tube 9 is equal to the opening area of ​​the inlet and outlet air vents 14, ensuring a dynamic balance between the airflow entering the heat exchange tank 16 through the guide tube 9 and the airflow exiting through the inlet and outlet air vents 14 under the drive of the guide fan 13. This avoids pressure fluctuations or airflow short-circuiting within the cavity caused by mismatched inlet and outlet airflow, ensuring stable and orderly airflow within the spiral channel, thereby maintaining the efficient heat exchange state of the heat dissipation components.

[0058] like Figures 1-3 and Figure 6 As shown, a guide bar 15 is provided at the opening of the air inlet / outlet hole 14 to control the airflow to flow in an inclined direction away from the inner heat sink 3 and the guide tube 9. When the cooled airflow is discharged from the air inlet / outlet hole 14, the guide bar 15 at its opening guides the airflow to flow in an inclined direction away from the inner heat sink 3 and the guide tube 9, so that the cold air is evenly diffused into the interior of the mounting cavity, preventing the airflow from directly flowing back to the inlet of the guide tube 9. This prevents airflow short-circuiting, optimizes the airflow distribution in the mounting cavity, and improves the overall circulation heat dissipation efficiency.

[0059] An annular sealing ring is installed between the contact surface between the inner heat sink 3 and the inner wall of the mounting cavity, and a sealing rubber ring is provided between the part of the heat pipe 20 that protrudes from the casing 1 and the heat sink hole 2.

[0060] Example 2: Regarding how to achieve intelligent temperature control, this example provides the following solution.

[0061] It also includes an intelligent temperature control system, which comprises a temperature sensor installed inside the enclosure 1, a second temperature sensor installed inside the external heat sink 4, a humidity sensor installed outside the enclosure 1, and a controller electrically connected to the temperature sensor, the second temperature sensor, and the humidity sensor. The controller is electrically connected to the cooling fan 11 and the airflow fan 13, respectively. The controller controls the start, stop, and speed of the cooling fan 11 and the airflow fan 13 based on the feedback signal from the temperature sensor. The controller is configured as follows: when the internal temperature of the enclosure 1 is lower than a first preset threshold, neither the cooling fan 11 nor the airflow fan 13 works; when the internal temperature of the enclosure 1 is higher than the first preset threshold but lower than a second preset threshold, the controller controls the cooling fan 11 and the airflow fan 13 to run at a first speed; when the internal temperature of the enclosure 1 is higher than the second preset threshold, the controller controls the cooling fan 11 and the airflow fan 13 to run at a second speed; when the external humidity sensor detects that the humidity is higher than a preset threshold, the controller pauses the operation of the cooling fan and the airflow fan 13.

[0062] In this embodiment, during operation, a temperature sensor inside the enclosure 1 monitors the temperature inside the mounting cavity in real time, a second temperature sensor inside the external heat sink 4 monitors the temperature of the external heat dissipation structure, and a humidity sensor outside the enclosure 1 monitors the ambient humidity. Each sensor feeds signals back to the controller. Based on the temperature signals, the controller determines the following: when the internal temperature of the enclosure is below a first preset threshold, neither the cooling fan 11 nor the airflow fan 13 operates, relying solely on passive cooling; when the temperature is above the first preset threshold but below a second preset threshold, the controller controls the cooling fan 11 and the airflow fan 13 to run at a first speed; when the temperature is above the second preset threshold, the controller controls both to run at full speed at a second speed; when the external humidity sensor detects humidity above a preset threshold, the controller pauses the operation of the cooling fan 11 and the airflow fan 13 to prevent the intake of high-humidity air into the enclosure. By intelligently adjusting the heat dissipation intensity according to the internal and external temperature and humidity of the enclosure 1, energy consumption is reduced while ensuring effective heat dissipation. Furthermore, in high-humidity environments, active cooling is proactively paused to prevent condensation, achieving energy-saving, safe, and adaptive high-efficiency thermal management.

[0063] 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 preferred examples and are not intended to limit 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 present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular energy metering box, comprising a box body (1) and a door (7) mounted on the box body (1), wherein when the door (7) is sealed and mounted on the box body (1), an installation cavity for mounting various components is formed between the interior of the box body (1) and the door (7), characterized in that, Heat dissipation strip holes (2) are provided on the top and bottom inner walls of the box (1). Dustproof nets can be detachably installed on the outside of the box (1) at the opening positions of the two heat dissipation strip holes (2). A modular heat dissipation mechanism is detachably installed inside the mounting cavity. The heat dissipation mechanism includes an inner heat dissipation block (3) that is sealed and installed on the inner wall of the top and bottom of the mounting cavity and corresponds to the opening of the two heat dissipation strip holes (2), a partition (8) that is detachably installed at the opening of the heat exchange groove (16), a guide tube (9) that is vertically inserted through the middle of the end face of the partition (8), a guide fan (13) installed in the guide tube (9), a heat exchange groove (16) opened on one end face of the inner heat dissipation block (3), and a heat dissipation component installed in the heat exchange groove (16). An air inlet and outlet strip holes (14) with an annular structure are opened at the edge of the end face of the partition (8). The heat dissipation component controls the airflow entering the heat exchange groove (16) to flow in a spiral direction and dissipates heat from the airflow. Among them, the guide fan (13) on the lower inner heat sink (3) is configured to introduce the airflow into the heat exchange tank (16) through the guide tube (9), and after the heat dissipation component is cooled by spiral flow, it is discharged through the air inlet and outlet holes (14); the discharged airflow enters its heat exchange tank (16) through the air inlet and outlet holes (14) of the partition (8) on the upper inner heat sink (3), and after the heat dissipation is cooled by spiral flow, it is discharged again, forming a circulating heat dissipation of the airflow inside the mounting cavity.

2. The modular energy metering box according to claim 1, characterized in that: The heat dissipation assembly includes an inner limiting tube (17) with one end vertically set on the bottom wall of the heat exchange tank (16) and the other end connected to the end of the guide tube (9), an outer limiting tube (19) sleeved on the outer ring of the inner limiting tube (17), multiple heat exchange strips (18) arranged in a circumferential array between the inner wall of the inner limiting tube (17) and the inner wall of the outer limiting tube (19), and heat dissipation components set on the heat exchange strips (18). The heat exchange strips (18) are respectively installed on the inner wall of the inner limiting tube (17) and the inner wall of the outer limiting tube (19), and the length direction of the heat exchange strips (18) is arranged along the spiral direction. A spiral channel for airflow is formed between two adjacent heat exchange strips (18). The inner limiting tube (17) and the outer limiting tube (19) are provided with an inner through port (21) and an outer through port (22) that communicate with the spiral channel.

3. The modular energy metering box according to claim 2, characterized in that: The heat dissipation component includes multiple heat pipes (20) that are one-to-one corresponding to the heat exchange strip (18) and pass through the heat exchange strip (18) with one end perpendicularly passing through the end face of the inner heat dissipation block (3) away from the heat exchange groove (16), and a heat dissipation structure installed on the box (1) to dissipate heat from the part of the heat pipe (20) that passes through the outside of the box (1). When the two inner heat dissipation blocks (3) are installed on the top and bottom of the mounting cavity, the heat pipes (20) that pass through the end face of the inner heat dissipation block (3) pass through the heat dissipation strip hole (2).

4. The modular energy metering box according to claim 3, characterized in that: The heat dissipation structure includes an outer heat dissipation block (4) with a heat dissipation groove (10) at the bottom, multiple heat dissipation plates (12) that are equally spaced and parallel to each other in the heat dissipation groove (10), a heat dissipation fan (11) that is set in a heat dissipation port (5) on the symmetrical side of the outer heat dissipation block (4), and a filter plate (6) installed at the opening of the heat dissipation port (5). Multiple heat dissipation plates (12) have connection holes that can be fitted onto the heat pipe (20) that passes through the box body (1).

5. The modular energy metering box according to claim 3, characterized in that: When the end of the heat pipe (20) protrudes from the casing (1) and extends into the outer heat sink (4), the end of the heat pipe (20) and the connection hole are tightly fitted by interference fit or thermal adhesive.

6. The modular energy metering box according to any one of claims 1 to 5, characterized in that: The opening area at the end of the guide tube (9) is equal to the opening area of ​​the air inlet / outlet hole (14).

7. The modular energy metering box according to claim 1, characterized in that: The air inlet and outlet holes (14) are provided with guide strips (15) to control the airflow to flow in an inclined direction away from the inner heat sink (3) and the guide tube (9).

8. The modular energy metering box according to claim 1, characterized in that: An annular sealing ring is installed between the contact surface between the inner heat sink (3) and the inner wall of the mounting cavity, and a sealing rubber ring is provided between the part of the heat pipe (20) that passes through the box (1) and the heat sink hole (2).

9. The modular energy metering box according to any one of claims 1 to 5, characterized in that: It also includes an intelligent temperature control system, which includes a temperature sensor installed inside the enclosure (1), a second temperature sensor installed inside the external heat sink (4), a humidity sensor installed outside the enclosure (1), and a controller electrically connected to the temperature sensor, the second temperature sensor, and the humidity sensor. The controller is electrically connected to the cooling fan (11) and the air guide fan (13) respectively. The controller controls the start, stop, and speed of the cooling fan (11) and the air guide fan (13) according to the feedback signal of the temperature sensor.

10. The modular energy metering box according to claim 9, characterized in that: The controller is configured such that: when the internal temperature of the enclosure (1) is lower than the first preset threshold, neither the cooling fan (11) nor the air guide fan (13) will work; when the internal temperature of the enclosure (1) is higher than the first preset threshold and lower than the second preset threshold, the controller controls the cooling fan (11) and the air guide fan (13) to run at the first speed; when the internal temperature of the enclosure (1) is higher than the second preset threshold, the controller controls the cooling fan (11) and the air guide fan (13) to run at the second speed; when the external humidity sensor detects that the humidity is higher than the preset threshold, the controller pauses the operation of the cooling fan and the air guide fan (13).

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