Power distribution box JP cabinet with moisture-proof function

Abstract

The application relates to a power distribution box JP cabinet with a moisture-proof function, and belongs to the technical field of power box cabinets. The cabinet body is provided with a heat dissipation hole group on the side wall, a pretreatment device is arranged at the position corresponding to the heat dissipation hole group on the inner side wall of the cabinet body, the pretreatment device comprises a pretreatment box body arranged around the heat dissipation hole group, a condensing plate arranged in the pretreatment box body and a condensing piece for refrigerating the condensing plate; the condensing plate is arranged in an inclined mode and the plate surface faces the heat dissipation hole group; the condensing plate divides the inside of the pretreatment box body into a ventilation area and a closed area; the ventilation area is communicated with the heat dissipation hole group; and the condensing piece is arranged in the closed area. While ensuring smooth heat dissipation, the pretreatment device is arranged, so that high-humidity air must first flow through the ventilation area before entering the cabinet body through the heat dissipation hole group, the water vapor in the air is pre-condensed on the condensing plate, the air inlet is dehumidified, the possibility of condensation on the surface of electrical elements in the cabinet is reduced, and the safety hidden danger is reduced.

Description

Technical Field

[0001] This application relates to the field of electrical distribution boxes and cabinets, and more particularly to a distribution box JP cabinet with moisture-proof function. Background Technology

[0002] JP (Power Distribution Unit) cabinets, as important equipment in power distribution networks, are widely used in outdoor environments. Their core function is to carry out comprehensive power distribution and management on the low-voltage side of the distribution transformer, providing protection, metering, and distribution for power transmission. To ensure the stable operation of internal electrical components, conventional JP cabinets typically have ventilation holes on their cabinets to dissipate heat generated during operation through natural air convection or by adding fans, preventing malfunctions caused by overheating.

[0003] However, this heat dissipation method, which relies on external air convection, has significant drawbacks when dealing with environments with high humidity and large diurnal temperature variations. Especially during the rainy season in southern my country or in coastal areas, large amounts of humid air inevitably enter the cabinet through the ventilation holes. When the temperature inside the cabinet falls below the dew point, water vapor condenses into droplets on the cold surfaces of electrical components and terminals, leading to decreased insulation performance, corrosion of metal parts, and even serious safety accidents such as short circuits and electrical leaks.

[0004] It is evident that while the heat dissipation holes in existing technologies ensure the heat dissipation needs of equipment, they also become channels for moisture intrusion, creating an irreconcilable contradiction between heat dissipation and moisture prevention. Summary of the Invention

[0005] In order to reduce moisture intrusion while ensuring heat dissipation performance, this application provides a distribution box JP cabinet with moisture-proof function.

[0006] This application provides a moisture-proof distribution box JP cabinet, which adopts the following technical solution:

[0007] A moisture-proof distribution box JP cabinet includes a cabinet body, a group of heat dissipation holes on the side wall of the cabinet body, and a pretreatment device on the inner side wall of the cabinet body corresponding to the position of the heat dissipation holes. The pretreatment device includes:

[0008] A pretreatment enclosure surrounding the heat dissipation hole group;

[0009] A condenser plate is installed inside the pretreatment chamber;

[0010] And a condenser for cooling the condenser plate;

[0011] The condenser plate is inclined and its surface faces the heat dissipation hole group. The condenser plate divides the interior of the pretreatment box into a ventilation area and a sealed area. The ventilation area is connected to the heat dissipation hole group, and the condenser is located in the sealed area.

[0012] The upper end of the pretreatment box is provided with an internal ventilation port that connects the ventilation zone with the inner cavity of the cabinet. The lower end of the condenser plate extends to be flush with or protrude from the outer wall of the cabinet. The side wall of the cabinet is provided with an external vent that connects to the lower end of the ventilation zone.

[0013] Optionally, the heat dissipation holes are located on opposite sides of the cabinet, with an exhaust fan at the internal ventilation opening of the pretreatment box on one side and an exhaust fan at the internal ventilation opening of the pretreatment box on the other side.

[0014] Optionally, it also includes a scraping mechanism for scraping off condensate from the surface of the condenser plate, the scraping mechanism being slidably disposed on the side of the condenser plate facing the ventilation area.

[0015] Optionally, the scraping mechanism includes a scraper and a flexible wiping component. The scraper is slidably connected to the condensing plate along the inclined direction of the condensing plate, and the scraper abuts against the surface of the condensing plate. The scraper has an installation groove on the side near the condensing plate, and the flexible wiping component is disposed in the installation groove. The pretreatment box is provided with a driving mechanism for driving the scraper to slide back and forth.

[0016] Optionally, the scraper may have guide slopes at both the upper and lower ends of the side of the scraper away from the condenser plate.

[0017] Optionally, the drive mechanism includes a traction rope and a return spring. The traction rope is located below the return spring. One end of the traction rope is connected to the scraper, and the other end of the traction rope passes through the external exhaust port. One end of the return spring is connected to the scraper, and the other end of the return spring is connected to the inner wall of the pretreatment chamber.

[0018] Optionally, the cabinet is provided with a baffle for blocking the external vent. The upper end of the baffle is provided with a hinge and is hinged to the outer wall of the cabinet. The baffle is provided with a groove through which a traction rope can pass and extends downward. The lower end of the groove has chamfered edges on both sides.

[0019] The inner side of the barrier is provided with a guide rod, and a trigger bolt is fixed on the traction rope. The lower end of the trigger bolt is provided with a guide cone surface. When the traction rope pulls the scraper to the lower end of the scraper's stroke, the trigger bolt squeezes the guide rod and drives the barrier to flip outward.

[0020] Optionally, the heat dissipation hole group includes multiple heat dissipation base holes arranged in a vertical direction. The heat dissipation hole group is provided with two rows on each opposite side of the cabinet, and the pretreatment device is provided corresponding to each row of heat dissipation hole groups. The external vent is located below the corresponding heat dissipation hole group.

[0021] Optionally, the traction rope is led out to the outside of the cabinet through several guide wheels and tensioned. Two traction ropes located on the same side of the cabinet are connected to the same winding wheel. The winding wheel is rotatably connected to the cabinet through a winding shaft. A rotating motor is provided inside the cabinet, and the output end of the rotating motor is coaxially fixed with the winding shaft.

[0022] Optionally, a first guide plate and a second guide plate are inclinedly arranged in the ventilation area of ​​the pretreatment box. The inclined upper end of the first guide plate abuts against the inner wall of the cabinet, and a certain gap is left between the inclined lower end of the first guide plate and the condenser plate. The inclined upper end of the second guide plate abuts against the surface of the condenser plate, and a certain gap is left between the inclined lower end of the second guide plate and the inner wall of the cabinet. The first guide plate and the second guide plate are staggered and do not contact each other.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up an independent pre-treatment device, high-humidity external air must first flow through the ventilation zone formed by the condenser plate before entering the cabinet cavity through the heat dissipation vents. During this process, the condenser cools the condenser plate, lowering its surface temperature below the dew point, forcing water vapor in the air to condense on the condenser plate surface beforehand. This achieves the purpose of "drying pre-treatment" of the incoming air, thereby reducing the absolute humidity of the air entering the cabinet and reducing the possibility of condensation on the surface of electrical components inside the cabinet, thus reducing safety hazards such as short circuits and corrosion caused by moisture. This application achieves moisture prevention while maintaining unobstructed ventilation channels formed by the heat dissipation vents, ventilation zone, and internal vents, without sacrificing heat dissipation requirements, cleverly solving the technical problem of traditional JP cabinets that are difficult to balance heat dissipation and moisture prevention. The condenser plate is set at an angle and extends outside the cabinet, naturally utilizing gravity and pressure difference, providing a structural basis for the automatic and continuous discharge of condensate, ensuring the long-term stability of the dehumidification effect.

[0025] 2. The scraping mechanism effectively addresses the issue of contaminant adhesion on the condenser plate surface caused by long-term use. Whether it's accumulated dust or lightweight fibers present in specific environments, the scraping mechanism effectively removes them periodically or as needed, maintaining the cleanliness of the condenser plate surface. This ensures that the heat exchange efficiency between the condenser plate and the air does not decrease due to the buildup of dirt, guaranteeing the long-lasting dehumidification effect. Furthermore, when a sudden drop in temperature during winter causes condensate to freeze on the condenser plate surface, the scraping mechanism breaks up and removes the ice layer, preventing it from thickening and causing blockage of the ventilation ducts or damage to the condenser plate. This enhances the equipment's environmental adaptability and reliability under low-temperature conditions.

[0026] 3. By configuring the baffle, guide rod, and trigger bolt, the unidirectional reciprocating motion of the scraping mechanism is intelligently linked to the automatic opening and closing of the external exhaust port. When the scraper descends to its lower limit, the guide cone surface of the trigger bolt presses against the guide rod, opening the baffle and providing a smooth discharge channel for the wastewater, ice chips, and debris generated during scraping. During the return stroke of the scraper, the trigger rod separates from the guide rod, and the baffle automatically resets under gravity, closing the external exhaust port. This allows for on-demand opening and closing of the external exhaust port—opening when dehumidification is needed and remaining closed under normal conditions—reducing the possibility of insects, rodents, dust, or rain entering from the outside and improving the equipment's protection level.

[0027] 4. By integrating the guide wheels, winding wheels, and rotating motors, the scraping mechanisms of the two pretreatment units on the same side are combined into a centralized drive system. Only one rotating motor is needed to synchronously drive the two scrapers on the same side, reducing control complexity and ensuring the synchronicity of cleaning and maintenance of the condensation plates on the same side. This avoids airflow disturbances or cleaning dead zones that may result from asynchronous movements of individual scraping mechanisms. Furthermore, centralized drive also improves system reliability and maintenance convenience.

[0028] 5. By setting up staggered but non-contacting first and second guide vanes, the air within the ventilation zone is easily guided. The incoming air flows along a pre-set, longer serpentine path, forcing the air to undergo more thorough and prolonged heat exchange with the condenser plate, thereby improving dehumidification efficiency. This guide structure can achieve a certain degree of airflow uniformity, making the airflow velocity and heat exchange on the condenser plate surface more even, avoiding airflow short-circuiting, and ensuring the stability of the dehumidification effect. At the same time, it can also reduce airflow noise to a certain extent and prevent large particles of debris from directly impacting the condenser plate, extending the condenser plate's service life. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the internal structure of a moisture-proof distribution box JP cabinet according to an embodiment of this application.

[0030] Figure 2 This is an exploded view illustrating the preprocessing apparatus in the embodiments of this application.

[0031] Figure 3 This is a cross-sectional view illustrating the cabinet in the embodiments of this application.

[0032] Figure 4 This is a cross-sectional view illustrating the internal structure of the pretreatment box in the embodiments of this application.

[0033] Figure 5 This is a schematic diagram illustrating the structure of the drive mechanism in the embodiments of this application.

[0034] Figure 6This is a schematic diagram illustrating the structure of the scraping mechanism in the embodiments of this application.

[0035] Figure 7 This is a schematic diagram illustrating the layout structure of one side of the cabinet in the embodiments of this application.

[0036] Figure 8 This is a schematic diagram illustrating the structure of the barrier plate in the embodiments of this application.

[0037] Figure 9 This is a structural schematic diagram illustrating the connection method between the traction rope and the winding wheel in the embodiments of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Cabinet; 11. Heat dissipation hole group; 111. Heat dissipation base hole; 12. External vent; 13. Guide wheel; 14. Winding wheel; 15. Winding shaft; 151. Coupling; 16. Rotating motor; 17. Rain guard plate; 2. Pretreatment device; 21. Pretreatment box; 211. Ventilation zone; 212. Sealed zone; 213. Internal ventilation opening; 214. Back panel; 22. Condensation plate; 23. Condensation plate. Components; 24. Exhaust fan; 25. First guide vane; 26. Second guide vane; 27. Slide rail; 28. Scraping mechanism; 31. Scraper; 311. Mounting groove; 312. Guide slope; 32. Flexible wiping component; 4. Drive mechanism; 41. Traction rope; 411. Trigger bolt; 4111. Guide cone surface; 42. Return spring; 5. Baffle plate; 51. Hinge shaft; 52. Groove; 53. Guide rod. Detailed Implementation

[0039] The following combination Figures 1-9 This application will be described in further detail below.

[0040] Example:

[0041] This application discloses a distribution box JP cabinet with moisture-proof function. (Refer to...) Figures 1-3A moisture-proof distribution box JP cabinet includes a cabinet body 1. A group of ventilation holes 11 is provided on the side wall of the cabinet body 1. A pretreatment device 2 is provided on the inner side wall of the cabinet body 1 at the position corresponding to the ventilation holes 11. The pretreatment device 2 includes a pretreatment box 21, a condensing plate 22, and a condensing element 23. The pretreatment box 21 is fixed inside the cabinet body 1 and surrounds the ventilation holes 11. The condensing plate 22 is inclined and fixed inside the pretreatment box, with its surface facing the ventilation holes 11. The condensing plate 22... The pretreatment box 21 is divided into a ventilation zone 211 and a sealed zone 212. The ventilation zone 211 is connected to the heat dissipation hole group 11. The condenser 23 is located in the sealed zone 212 to cool the condenser plate 22. The upper end of the pretreatment box 21 is provided with an internal ventilation port 213 that connects the ventilation zone 211 to the inner cavity of the cabinet 1. The lower end of the condenser plate 22 extends to be flush with or out of the outer wall of the cabinet 1. The side wall of the cabinet 1 is provided with an external vent 12 that connects to the lower end of the ventilation zone 211.

[0042] In use, by setting up an independent pretreatment device 2, the high-humidity external air must first flow through the ventilation zone 211 formed by the condenser plate 22 before entering the inner cavity of the cabinet 1 through the heat dissipation hole group 11. During this process, the condenser 23 cools the condenser plate 22, lowering its surface temperature below the dew point, forcing water vapor in the air to condense on the surface of the condenser plate 22 in advance, thus achieving the purpose of "drying pretreatment" of the incoming air, thereby reducing the absolute humidity of the air entering the cabinet 1, and further reducing the possibility of condensation on the surface of electrical components inside the cabinet 1, reducing safety hazards such as short circuits and corrosion caused by moisture. While achieving moisture prevention, this application does not sacrifice heat dissipation requirements because the ventilation channel formed by the heat dissipation hole group 11-ventilation zone 211-inner ventilation port 213 remains unobstructed, cleverly solving the technical problem of traditional JP cabinets that are difficult to balance heat dissipation and moisture prevention. The condenser plate 22 is set at an angle and extends outside the cabinet, naturally utilizing gravity and pressure difference, providing a structural basis for the automatic and continuous discharge of condensate, ensuring the long-term stability of the dehumidification effect.

[0043] Reference Figure 2 and Figure 4The condenser 23 is a condenser pipe and is connected to an external cold source device located outside the cabinet 1. The pretreatment cabinet 21 is a cabinet without side walls, and the missing side walls are the side close to the heat dissipation hole group 11 and the side away from the heat dissipation hole group 11. To ensure the airtightness of the sealed area 212 and to facilitate the maintenance of the condenser 23, a back plate 214 is detachably fixed to the side of the pretreatment cabinet 21 away from the heat dissipation hole group 11 by bolts / screws. The condenser 23 is located in the space of the sealed area 212 near the condenser plate 22. The remaining space of the sealed area 212 can be selectively filled with thermal insulation materials according to actual heat dissipation requirements. When the ambient temperature is high or under high load conditions, the remaining space of the sealed area 212 may not be filled with thermal insulation materials. In this way, the condenser 23 cools the condenser plate 22 on the one hand, and heats the cabinet 1 through heat exchange with the side wall of the pretreatment box 21 and the side wall of the back panel 214, thereby improving the heat dissipation effect. When the ambient temperature is low, the remaining space of the sealed area 212 is filled with thermal insulation materials, so that the condenser 23 focuses on cooling the condenser plate 22, ensuring the condensing efficiency of the condenser plate 22 and reducing cold energy consumption.

[0044] Reference Figure 3 The heat dissipation vents 11 are located on opposite sides of the cabinet 1. An exhaust fan 24 is installed at the internal ventilation opening 213 of the pretreatment chamber 21 on one side, and an exhaust fan 25 is installed at the same opening 213 on the other side. Thus, by installing the exhaust fan 24 and exhaust fan 25 on opposite sides of the cabinet 1, a directional forced convection airflow is formed within the cabinet 1, improving air circulation speed and enhancing overall heat dissipation efficiency. More importantly, it ensures that all air entering the cabinet 1 flows through the pretreatment chamber 21 for dehumidification without any leakage, eliminating the risk of air stagnation or short circuits, and ensuring that the moisture-proof treatment covers the entire interior space of the cabinet 1.

[0045] Reference Figure 3 and Figure 4Within the ventilation zone 211 of the pretreatment cabinet 21, a first guide plate 26 and a second guide plate 27 are fixed at an angle. The upper inclined end of the first guide plate 26 abuts against the inner wall of the cabinet 1, and a certain gap is left between the lower inclined end of the first guide plate 26 and the condenser plate 22. The upper inclined end of the second guide plate 27 abuts against the surface of the condenser plate 22, and a certain gap is left between the lower inclined end of the second guide plate 27 and the inner wall of the cabinet 1. The first guide plate 26 and the second guide plate 27 are staggered and do not contact each other. In this way, the air in the ventilation zone 211 can be guided, and the incoming air flows along a preset, longer serpentine path, forcing the air to undergo more thorough and longer heat exchange with the condenser plate 22, thereby improving dehumidification efficiency. This airflow guiding structure can achieve a certain degree of airflow uniformity, making the wind speed and heat exchange on the surface of the condenser plate 22 more uniform, avoiding airflow short-circuiting, and ensuring the stability of the dehumidification effect. At the same time, it can also reduce the noise of airflow to a certain extent and prevent large particles of debris from directly impacting the condenser plate 22, thus extending the service life of the condenser plate 22.

[0046] Reference Figure 5 and Figure 6 A scraping mechanism 3 is provided on the side of the condenser plate 22 facing the ventilation area 211 to scrape away condensate from the surface of the condenser plate 22. The scraping mechanism 3 includes a scraper 31 and a flexible wiping element 32. Slide rails 28 are fixed on the inner walls of both sides of the pretreatment box 21. The two ends of the scraper 31 are respectively engaged with the slide rails 28 on both sides so that the scraper 31 slides along the inclined direction of the condenser plate 22. The scraper 31 abuts against the surface of the condenser plate 22. An installation groove 311 is opened on the side of the scraper 31 near the condenser plate 22. The flexible wiping element 32 is detachably installed in the installation groove 311. The pretreatment box 21 is provided with a driving mechanism 4 for driving the scraper 31 to slide back and forth. In this embodiment, the flexible wiping element 32 is made of sponge, rubber or cloth. The scraping mechanism 3 solves the problem of contaminant adhesion that may occur on the surface of the condenser plate 22 due to long-term use. Whether it's accumulated dust or lightweight fibers that may be present in a specific environment, the periodic or on-demand scraping by the scraping mechanism 3 can effectively remove them, maintaining the cleanliness of the condenser plate 22 surface. This ensures that the heat exchange efficiency between the condenser plate 22 and the air is not diminished by the dirt layer, guaranteeing the longevity of the dehumidification effect. Furthermore, when a sudden drop in temperature in winter causes condensate to freeze on the surface of the condenser plate 22, the scraping mechanism 3 can break up and remove the ice layer, preventing the ice layer from continuously thickening and causing blockage of the ventilation duct 211 or damage to the condenser plate 22, thus enhancing the equipment's environmental adaptability and reliability under low-temperature conditions.

[0047] Reference Figure 5 and Figure 6The scraper 31 has guide slopes 312 at both the upper and lower ends of the side of the scraper 31 away from the condensation plate 22. This reduces the movement resistance of the scraper 31 during movement and allows condensed water or melted ice water to flow smoothly over the edge of the scraper 31 without being blocked by the scraper 31 itself to form puddles. On the other hand, the guide slopes 312 form a wedge-shaped structure at both ends of the scraper 31, which provides a gradual force when scraping ice or stubborn dirt, making it easier to break up the attachments and avoiding damage to the plate surface that may be caused by hard scraping. It also helps to reduce the load on the drive mechanism 4 and improve the mechanical efficiency of the scraping mechanism 3.

[0048] Reference Figure 2 , Figure 5 and Figure 6 The drive mechanism 4 includes a traction rope 41 and a return spring 42. The traction rope 41 is located below the return spring 42. One end of the traction rope 41 is connected to the scraper 31, and the other end of the traction rope 41 passes through the external drainage port 12. One end of the return spring 42 is connected to the scraper 31, and the other end of the return spring 42 is connected to the inner wall of the pretreatment box 21. In this embodiment, the return spring 42 is a tension spring. The reciprocating motion of the scraper 31 is realized by the combination of the traction rope 41 and the return spring 42.

[0049] Reference Figure 2 , Figures 6-8 The cabinet 1 is also equipped with a baffle plate 5 for blocking the external vent 12. A hinge pin 51 is fixed to the upper end of the baffle plate 5, and the baffle plate 5 is hinged to the outer wall of the cabinet 1 through the hinge pin 51. A groove 52 is provided on the baffle plate 5 for the traction rope 41 to pass through and extend to the lower end of the baffle plate 5. A guide rod 53 is fixed to the inner side of the baffle plate 5, and a trigger bolt 411 is fixed at a preset position on the traction rope 41. The lower end of the trigger bolt 411 is provided with a guide cone surface 4111. When the traction rope 41 pulls the scraper 31 to the lower end of the stroke of the scraper 31, the trigger bolt 411 squeezes the guide rod 53 and drives the baffle plate 5 to flip outward; when the return spring 42 drives the scraper 31 to return to the original position, the trigger bolt 411 moves upward with the traction rope 41, thereby separating from the guide rod 53, and the baffle plate 5 returns to its original position under its own weight. To ensure that the groove 52 can be aligned with the traction rope 41 when the barrier plate 5 is reset, and to ensure that the barrier plate 5 can be automatically reset, the lower opening of the groove 52 is chamfered on both sides.

[0050] In practical use, the baffle plate 5, guide rod 53, and trigger bolt 411 intelligently link the unidirectional reciprocating motion of the scraping mechanism 3 with the automatic opening and closing of the external drainage port 12. When the scraper 31 descends to the lower limit of its stroke, the guide cone surface 4111 of the trigger bolt 411 presses against the guide rod 53 to open the baffle plate 5, providing a smooth discharge channel for the wastewater, ice chips, and debris generated during scraping. During the return stroke of the scraper 31, the trigger rod separates from the guide rod 53, and the baffle plate 5 automatically resets under gravity, closing the external drainage port 12. This allows the external drainage port 12 to be opened and closed as needed, opening when dehumidification is required and remaining closed under normal conditions, thereby reducing the possibility of insects, rodents, dust, or rain entering from the outside and improving the protection level of the equipment.

[0051] Reference Figure 2 , Figure 3 and Figure 7 The heat dissipation hole group 11 includes multiple heat dissipation base holes 111 arranged vertically. Two rows of heat dissipation hole groups 11 are provided on each opposite side of the cabinet 1, and the pretreatment device 2 is provided corresponding to each row of heat dissipation hole groups 11. Rainproof eaves 17 are fixed on the outer wall of the cabinet 1 at the positions corresponding to each heat dissipation base hole 111 to further prevent rainwater from entering the pretreatment device 2 through the heat dissipation base holes 111, reducing the dehumidification pressure on the pretreatment device 2 during the rainy season. By providing two rows of independent heat dissipation and moisture-proof modules on each side of the cabinet 1, the overall heat dissipation and ventilation volume and dehumidification capacity are improved. The pretreatment device 2 is provided corresponding to each row of heat dissipation hole groups 11. Compared to using a single large pretreatment device 2 to cover a wide span, this allows for a more reasonable size for each condenser plate 22, ensuring the uniformity of its temperature field and condensation efficiency.

[0052] Reference Figure 2 and Figure 7 It is worth noting that the external vent 12 is located below the corresponding heat dissipation hole group 11. Since hot air naturally rises, and the eaves of the rain shield 17 are bent downwards, when hot air inside the cabinet 1 is discharged through the heat dissipation holes 111, the rain shield 17 guides the airflow, causing the waste heat gas to flow downwards a certain distance, resulting in some of the waste heat air accumulating at the external vent 12 below the heat dissipation hole group 11. The external vent 12 is not only the outlet for dehumidification but also the easiest channel for external cold air to intrude. In winter or extreme environments with sudden temperature drops, the temperature of the structural components at the external vent 12 and the lower end of the condenser plate 22 can easily drop below freezing. The waste heat airflow, guided by the rain shield 17, accumulates here, forming a localized thermal curtain in this area, effectively blocking the direct intrusion of external cold air. This helps reduce the risk of icing around the external vent 12 and the lower end of the condenser plate 22 in frigid environments, achieving anti-freeze protection without additional energy consumption.

[0053] ReferenceFigure 2 and Figures 7-9 The traction rope 41 is led out to the outside of the cabinet 1 and tensioned through several guide wheels 13. The guide wheels 13 are rotatably mounted on the outer wall of the cabinet 1. Two traction ropes 41 located on the same side of the cabinet 1 are connected to the same winding wheel 14 and are both fixed to the groove wall of the winding wheel 14. The winding wheel 14 is coaxially fixed to the winding shaft 15, and the winding wheel 14 is rotatably connected to the cabinet 1 through the winding shaft 15. A rotary motor 16 is fixed inside the cabinet 1, and the output end of the rotary motor 16 is coaxially fixed to the winding shaft 15 through a coupling 151. Through the arrangement of the guide wheels 13, the winding wheel 14 and the rotary motor 16, the power of the scraping mechanism 3 of the two pretreatment devices 2 on the same side is integrated into a centralized drive system. Only one rotary motor 16 is needed to synchronously drive the two scrapers 31 on the same side, reducing the control complexity, ensuring the synchronicity of cleaning and maintenance of the condensation plates 22 on the same side, and avoiding airflow disturbance or cleaning dead corners that may be caused by the asynchronous operation of a single scraping mechanism 3. In addition, centralized drive also improves the reliability and ease of maintenance of the system.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A distribution box JP cabinet with moisture-proof function, comprising a cabinet body (1), wherein the side wall of the cabinet body (1) is provided with a heat dissipation hole group (11), characterized in that, A pretreatment device (2) is provided on the inner side wall of the cabinet (1) at the position corresponding to the heat dissipation hole group (11). The pretreatment device (2) includes: A pretreatment box (21) surrounding the heat dissipation hole group (11); A condenser plate (22) is installed inside the pretreatment box (21); And a condenser (23) for cooling the condenser plate (22); The condenser plate (22) is inclined and its surface faces the heat dissipation hole group (11). The condenser plate (22) divides the interior of the pretreatment box (21) into a ventilation area (211) and a sealed area (212). The ventilation area (211) is connected to the heat dissipation hole group (11). The condenser (23) is located in the sealed area (212). The upper end of the pretreatment box (21) is provided with an internal ventilation port (213) that connects the ventilation area (211) with the inner cavity of the cabinet (1). The lower end of the condenser plate (22) extends to be flush with or out of the outer wall of the cabinet (1). The side wall of the cabinet (1) is provided with an external vent (12) that connects to the lower end of the ventilation area (211). It also includes a scraping mechanism (3) for scraping off condensate from the surface of the condensing plate (22). The scraping mechanism (3) includes a scraper (31) which is slidably connected to the condensing plate (22) along the inclined direction of the condensing plate (22). The pretreatment box (21) is provided with a driving mechanism (4) for driving the scraper (31) to slide back and forth. The drive mechanism (4) includes a traction rope (41) and a return spring (42). The traction rope (41) is located below the return spring (42). One end of the traction rope (41) is connected to the scraper (31), and the other end of the traction rope (41) passes through the external drainage port (12). One end of the return spring (42) is connected to the scraper (31), and the other end of the return spring (42) is connected to the inner wall of the pretreatment box (21). The cabinet (1) is provided with a baffle (5) for blocking the external vent (12). The upper end of the baffle (5) is provided with a hinge (51) and is hinged to the outer wall of the cabinet (1) through the hinge (51). The baffle (5) is provided with a groove (52) through which the traction rope (41) can pass and extends downward. The inner side of the barrier plate (5) is provided with a guide rod (53), and a trigger bolt (411) is fixed on the traction rope (41). The lower end of the trigger bolt (411) is provided with a guide cone surface (4111). When the traction rope (41) pulls the scraper (31) to the lower end of the stroke of the scraper (31), the trigger bolt (411) squeezes the guide rod (53) and drives the barrier plate (5) to flip outward.

2. The distribution box JP cabinet with moisture-proof function according to claim 1, characterized in that: The heat dissipation hole group (11) is located on opposite sides of the cabinet (1). One side of the pretreatment box (21) has an exhaust fan (24) at the internal ventilation port (213) and the other side of the pretreatment box (21) has an exhaust fan (25) at the internal ventilation port (213).

3. A distribution box JP cabinet with moisture-proof function according to claim 1, characterized in that: The scraping mechanism (3) further includes a flexible wiping element (32). The scraper (31) abuts against the surface of the condenser plate (22). The scraper (31) has an installation groove (311) on the side near the condenser plate (22). The flexible wiping element (32) is located in the installation groove (311).

4. A distribution box JP cabinet with moisture-proof function according to claim 1, characterized in that: The scraper (31) has guide slopes (312) at both the upper and lower ends of the side of the scraper (31) away from the condenser plate (22).

5. A distribution box JP cabinet with moisture-proof function according to claim 1, characterized in that: The lower opening of the groove (52) is chamfered on both sides.

6. A distribution box JP cabinet with moisture-proof function according to claim 1, characterized in that: The heat dissipation hole group (11) includes a plurality of heat dissipation base holes (111) arranged in a vertical direction. The heat dissipation hole group (11) is provided in two columns on each opposite side of the cabinet (1), and the pretreatment device (2) is provided corresponding to each column of heat dissipation hole group (11). The external vent (12) is located below the corresponding heat dissipation hole group (11).

7. A distribution box JP cabinet with moisture-proof function according to claim 6, characterized in that: The traction rope (41) is led out to the outside of the cabinet (1) and tensioned through several guide wheels (13). Two traction ropes (41) located on the same side of the cabinet (1) are connected to the same winding wheel (14). The winding wheel (14) is rotatably connected to the cabinet (1) through the winding shaft (15). The cabinet (1) is equipped with a rotating motor (16). The output end of the rotating motor (16) is coaxially fixed with the winding shaft (15).

8. A distribution box JP cabinet with moisture-proof function according to claim 1, characterized in that: The pretreatment box (21) has a first guide plate (26) and a second guide plate (27) arranged at an angle in the ventilation area (211). The upper inclined end of the first guide plate (26) abuts against the inner wall of the cabinet (1), and the lower inclined end of the first guide plate (26) leaves a certain gap with the condenser plate (22). The upper inclined end of the second guide plate (27) abuts against the surface of the condenser plate (22), and the lower inclined end of the second guide plate (27) leaves a certain gap with the inner wall of the cabinet (1). The first guide plate (26) and the second guide plate (27) are arranged alternately and do not contact each other.

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