A dual-cycle dehumidification intelligent power grid anti-condensation distribution box device

Abstract

The application discloses a kind of double-cycle dehumidification's intelligent power grid anti-condensation distribution box device, including distribution box body, distribution box body is equipped with heat dissipation interlayer, condensing frame, air inlet guide slot and air return guide slot, heat dissipation interlayer collects hot and humid air, and small mouth end is connected with heat dissipation fan, and heat dissipation fan sends hot and humid air into condensing frame by air inlet guide slot, and condensing frame is equipped with multiple layers of condensing grid, when hot and humid air passes through condensing grid, water vapor condenses into condensate, and dry and cold air after dehumidification rises by air return guide slot and is blown to the area of electrical component by air distribution hole;Condensing frame bottom is equipped with slope, and slope lowest end opens drain groove, and extension pipe is arranged in drain groove, and condensing frame bottom surface is equipped with U-shaped water seal groove, and extension pipe lower end extends into water seal groove below liquid level to prevent air leakage, and excess condensate is discharged from overflow groove;Wave-shaped spoiler is arranged between adjacent condensing grid to guide airflow to flow in S-shaped path.This application realizes directional circulation condensation dehumidification, and dehumidification efficiency is high, and sealing property is good.

Description

Technical Field

[0001] This invention belongs to the field of smart grid power distribution equipment technology, and in particular relates to a smart grid anti-condensation distribution box device with dual-cycle dehumidification. Background Technology

[0002] With the continuous advancement of smart grid construction, smart distribution boxes, as core equipment at the end of the distribution network, integrate an increasing number of intelligent monitoring terminals, communication modules, and automated control components, leading to increasingly stringent requirements for the reliability of their operating environment. Currently, smart grid distribution boxes typically employ semiconductor refrigeration dehumidification devices to prevent internal condensation. These devices utilize the Peltier effect of semiconductor cooling plates to lower the cold-end temperature below the dew point, causing water vapor in the flowing, humid air to condense and precipitate on the cold-end surface, thus achieving dehumidification. Compared to traditional heater dehumidification methods, semiconductor refrigeration dehumidification offers advantages such as continuous dehumidification and independence from ventilation conditions, and has been widely applied in outdoor smart distribution boxes.

[0003] However, existing semiconductor refrigeration and dehumidification devices in smart grid distribution boxes still have the following defects in terms of mechanical structure and airflow organization: First, the airflow organization inside the box is disordered, with hot and humid air and dry and cold air freely diffusing and mixing turbulently, resulting in airflow short circuits and dehumidification dead zones; Second, the heat exchange surface of the condenser is smooth, and condensed water easily gathers into large-diameter suspended water droplets, which increases thermal resistance, reduces cooling efficiency, and is easily blown away by the airflow, causing secondary splashing and short circuit accidents; Third, the distribution of dry and cold air after dehumidification is uneven, with local overcooling causing secondary condensation, insufficient dehumidification in distant areas, and severely uneven temperature and humidity distribution inside the box; Fourth, existing airflow ducts are mostly independent pipes, occupying the installation space of electrical components inside the box, making them unsuitable for high-density smart distribution boxes. To solve the above problems, a dual-cycle dehumidification smart grid anti-condensation distribution box device is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a smart grid anti-condensation distribution box device with dual-cycle dehumidification, which solves the problem.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a smart grid anti-condensation distribution box device with dual-cycle dehumidification, comprising a distribution box body, characterized in that: The power distribution box body is equipped with a heat dissipation jacket, a condenser frame, an air inlet guide groove and a return air guide groove; The heat dissipation interlayer is located above the interior of the distribution box body and is connected to an airflow drive device. One end of the air inlet guide groove is connected to the air outlet of the airflow drive device, and the other end is connected to the air inlet side of the condenser frame; the condenser frame is provided with multiple layers of condenser grids, and gaps are left between adjacent condenser grids for airflow to pass through. One end of the return air guide channel is connected to the air outlet side of the condenser frame, and the other end extends to the upper part of the distribution box body and is provided with an air distribution hole. The air distribution hole faces the electrical component area inside the distribution box body; the bottom of the condenser frame is provided with a drainage structure. The airflow drive device draws in the hot and humid air inside the distribution box through the heat dissipation jacket, sends it into the condenser frame through the air inlet guide groove, and after passing through the condenser grid plate for dehumidification, the dry and cold air rises through the return air guide groove and is blown towards the electrical component area through the air distribution holes, forming a directional internal circulation dehumidification air duct.

[0006] Preferably, the airflow driving device includes a fan mounting frame and a cooling fan disposed within the fan mounting frame. The fan mounting frame is fixedly disposed inside the heat dissipation interlayer. The air outlet of the cooling fan is connected to the air inlet guide groove. The air inlet of the cooling fan faces the inside of the heat dissipation interlayer, and the air outlet is connected to the air inlet guide groove. The upper surface of the heat dissipation interlayer is provided with a grille, which is disposed above the air inlet of the cooling fan.

[0007] According to the claim, the intelligent power grid anti-condensation distribution box device for dual-cycle dehumidification is characterized in that the fan fixing frame is a C-shaped frame with sealed walls on three sides and one side open, the cooling fan is horizontally embedded in the fan fixing frame, the air outlet of the cooling fan faces the open side of the fan fixing frame, and the open side is connected to the air inlet guide groove.

[0008] Preferably, one end of the air inlet guide channel is connected to the air outlet of the airflow drive device and to the air inlet side of the condenser frame; the return air guide channel is vertically arranged close to the right inner wall of the distribution box body, its lower end is connected to the air outlet side of the condenser frame, and its upper end extends to the upper part of the distribution box body; the air distribution hole is opened on the peripheral side wall at the upper end of the return air guide channel.

[0009] Preferably, a plurality of plug-in seats are fixedly provided on both sides of the inner wall of the condensation frame, and the two ends of the condensation grid plate are respectively plugged into the plug-in seats of corresponding height to form a detachable connection; the upper surface of the condensation grid plate is provided with a plurality of condensation guide grooves, the cross-section of the condensation guide grooves is V-shaped and extends along the airflow direction.

[0010] Preferably, the drainage structure includes a slope on the bottom surface of the inner wall of the condenser frame, and a drainage groove is provided at the lowest end of the slope; an extension pipe is fixedly provided in the drainage groove, and a water seal groove is fixedly provided on the bottom surface of the condenser frame. The water seal groove is U-shaped, and the bottom end of the extension pipe extends into the water seal groove. An overflow groove is provided at one end of the water seal groove for draining excess water from the water seal groove.

[0011] Preferably, the distribution box body is further provided with a cable mounting plate, which is horizontally fixed below the condenser frame. The cable mounting plate has multiple cable routing holes and multiple strip grooves, which are located below the overflow groove and are used to receive and discharge water flowing out of the overflow groove.

[0012] Preferably, a baffle plate is fixedly provided in the gap between two adjacent condensation grids. The baffle plate is wavy and is used to guide the airflow in an S-shaped path when passing through the gap between adjacent condensation grids.

[0013] Preferably, a heat dissipation groove is provided on the side wall of the distribution box body, and the heat dissipation groove is connected to the outside atmosphere to dissipate the heat inside the distribution box body to the outside.

[0014] The present invention has the following beneficial effects: This invention achieves directional airflow circulation within the distribution box, eliminating dehumidification dead zones and airflow short circuits. Specifically, it utilizes a heat dissipation interlayer, an airflow drive device, an air inlet guide channel, a condenser frame, multi-layer condenser grids, a return air guide channel, and air distribution holes. The heat dissipation interlayer collects rising humid and hot air, which is then directionally delivered into the condenser frame via the air inlet guide channel. As the humid and hot air passes through the gaps between the condenser grids, water vapor condenses and precipitates out. The dehumidified dry and cold air rises through the return air guide channel and is evenly blown towards the electrical component area through the air distribution holes, forming a directional internal circulation dehumidification air duct that "passes through the condenser grids from top to bottom and returns to the box space from bottom to top." Compared to the disordered diffusion and free mixing of airflow in existing technologies, this completely eliminates airflow short circuits and dehumidification dead zones. This invention achieves orderly flow guidance of condensate on the heat exchange surface and airtight sealing of the drainage channel, eliminating secondary splashing of condensate and airflow leakage. Specifically, a V-shaped condensation guide groove is opened on the upper surface of the condenser grid plate, using capillary force to bind and guide the condensate to the edge of the grid plate, preventing the condensate from accumulating into large-diameter water droplets that are blown away by the airflow. At the same time, by setting a slope, drainage groove, extension pipe, and U-shaped water seal groove at the bottom of the condenser frame, and by using the lower end of the extension pipe to insert below the liquid surface of the water seal groove to form a water seal layer, a gas-liquid separation and sealing effect of "water can be discharged, but air cannot be leaked" is achieved. Compared with the existing technology where smooth fins are prone to large-diameter water droplet splashing and the drain outlet is directly open, causing airflow short circuit, this invention significantly improves the safety and airtightness of the dehumidification system. This invention extends the contact path between humid, hot air and the cold surface of the condenser grid, thus improving dehumidification efficiency. Specifically, it involves placing corrugated baffles in the gap between adjacent condenser grid layers. The alternating peaks and troughs of these baffles guide the airflow horizontally passing through the grid gaps in an S-shaped undulating path, extending the actual flow path of the airflow within the grid gaps by 1.5 to 2 times. This repeatedly brings the airflow close to the cold grid surfaces on both sides, increasing the contact opportunity and condensation probability between water vapor and the cold surface. Compared to the existing technology where the airflow passes through the heat exchange fins in a straight line, this invention improves dehumidification efficiency without increasing the number of grid layers or the volume of the condenser frame.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 This is a schematic diagram of the condensation dehumidification module of the present invention; Figure 6 This is a schematic diagram of the internal structure of the condenser assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the two condensation grids and the baffle plate in the middle position of the present invention; Figure 8 This is a schematic diagram of the cable mounting plate of the present invention; Figure 9 This is a schematic diagram of the water seal tank of the present invention.

[0018] The components represented by each number in the attached diagram are listed below: 1. Distribution box body; 2. Grille; 3. Heat dissipation slot; 4. Air inlet guide slot; 5. Return air guide slot; 6. Heat dissipation jacket; 7. Fan mounting frame; 8. Cooling fan; 9. Condensation frame; 10. Cable mounting plate; 11. Plug-in socket; 12. Condensation grille; 13. Baffle plate; 14. Water seal slot; 15. Extension pipe; 16. Air distribution hole; 17. Ramp; 18. Condensation guide slot; 19. Air inlet; 20. Strip slot; 21. Wiring hole; 22. Overflow slot. Detailed Implementation

[0019] 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.

[0020] In the description of this invention, it should be understood that the terms "upper," "middle," "outer," "inner," etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0021] Please see Figures 1-9 As shown, the distribution box includes a main body 1 and a heat dissipation jacket 6, a condenser frame 9, an air inlet guide slot 4, and a return air guide slot 5 disposed within the main body 1. The main body 1 also includes a cable mounting plate 10, which is horizontally fixed within the main body 1 and divides the main body 1 into an upper main chamber and a lower inlet / outlet cable compartment. The condenser frame 9 is fixedly disposed above the cable mounting plate 10, and the heat dissipation jacket 6 is disposed on the top wall of the main body 1.

[0022] The heat dissipation interlayer 6 is used to collect rising hot and humid air and is connected to an airflow drive device.

[0023] The airflow drive device includes a fan mounting frame 7 and a cooling fan 8 disposed within the fan mounting frame 7. The cooling fan 8 is an exhaust fan. The fan mounting frame 7 is fixedly disposed inside the heat dissipation interlayer 6. The fan mounting frame 7 is a C-shaped frame with sealed walls on three sides and one side open. The cooling fan 8 is horizontally embedded in the fan mounting frame 7. The air inlet of the cooling fan 8 faces downward toward the inside of the heat dissipation interlayer 6, and the air outlet faces the open side of the fan mounting frame 7. The air outlet of the cooling fan 8 is connected to the air inlet guide groove 4. By setting the air inlet of the cooling fan 8 downward, airflow can be generated at the air inlet when the cooling fan 8 is running. The negative pressure zone acts directly on the internal cavity of the heat dissipation jacket 6, thereby continuously drawing the humid and hot air captured at the end of the heat dissipation jacket 6 upward. By setting the air outlet of the cooling fan 8 towards the open surface of the fan mounting frame 7, the drawn-in humid and hot air can be pressurized by the cooling fan 8 and then directed into the air inlet guide groove 4. This realizes the power conversion of humid and hot air from "rising collection" to "directional delivery". The three-sided sealing wall of the fan mounting frame 7 prevents the airflow from bypassing and leaking inside the fan mounting frame 7, ensuring that all the airflow discharged by the cooling fan 8 enters the air inlet guide groove 4 through the open surface.

[0024] One end of the air inlet guide trough 4 is sealed and connected to the open surface of the fan fixing frame 7, and the other end is sealed and connected to the air inlet side of the condenser frame 9. The air inlet guide trough 4 is set close to the left inner wall of the distribution box body 1, and its cross-section is rectangular. The air inlet guide trough 4 includes a horizontal section and a vertical section. One end of the horizontal section is connected to the open surface of the fan fixing frame 7, and the other end is connected to the upper end of the vertical section. The vertical section extends downward close to the left inner wall of the distribution box body 1, and its lower end is connected to the air inlet side of the condenser frame 9. By tightly attaching the air inlet guide trough 4 to the distribution box body, The design of the left inner wall of the distribution box 1 ensures that the air guide channel does not occupy the installation space of the electrical components inside the distribution box body 1, thus solving the problem that the independent air duct occupies the space inside the box and cannot be used in high-density distribution boxes in the prior art. The L-shaped layout of the horizontal and vertical sections realizes the smooth conversion of the airflow direction from the horizontal direction of the air outlet of the cooling fan 8 to the vertical downward direction, thereby directionally transporting the hot and humid air from the upper part of the distribution box body 1 to the lower condenser frame 9, avoiding turbulent mixing of the hot and humid air with the existing airflow inside the box during the transportation process.

[0025] The condenser frame 9 is a rectangular frame structure, which is fixedly installed above the cable mounting plate 10. A gap is left between the condenser frame 9 and the cable mounting plate 10. Several plug-in seats 11 are fixedly provided on both sides of the inner wall of the condenser frame 9. Each plug-in seat 11 is arranged at equal intervals in the vertical direction. A condenser grid plate 12 is detachably plugged into each plug-in seat 11. A gap is left between adjacent condenser grid plates 12 to allow airflow to pass through. By fixing the condenser frame 9 above the cable mounting plate 10, the condenser frame 9 makes full use of the idle space above the bottom inlet and outlet cable compartment of the distribution box body 1, without occupying the electrical component installation area of ​​the main chamber. Through the detachable plug-in cooperation between the plug-in seat 11 and the condenser grid plate 12, the number of condenser grid plates 12 can be adjusted according to the actual dehumidification needs. It also facilitates the subsequent cleaning or replacement of individual condenser grid plates 12, reducing maintenance costs.

[0026] The condenser grid 12 is a rectangular flat plate of aluminum alloy. Each condenser grid 12 is horizontally arranged and parallel to each other. The aluminum alloy material has good thermal conductivity, which can quickly conduct the low temperature generated by the cold end of the semiconductor cooling chip to the entire grid surface, ensuring that the surface temperature of each condenser grid 12 is lower than the dew point temperature of the humid air. Multiple condensation guide grooves 18 are formed on the upper surface of the condenser grid 12. The cross-section of the condensation guide grooves 18 is V-shaped and extends along the airflow direction. When the humid air passes horizontally through the gap between two adjacent condenser grids 12, At this time, water vapor condenses into liquid water on the cold surface of the condensation grid plate 12. Due to the capillary force generated by the V-shaped cross-section structure of the condensation guide channel 18, the condensed water is bound in the condensation guide channel 18 and flows along the channel towards the edge of the condensation grid plate 12. This avoids the risk of the condensed water accumulating into large-diameter water droplets on the surface of the condensation grid plate 12 and being blown away by the airflow. At the same time, since the condensed water spreads in the form of a thin water film in the condensation guide channel 18, its thermal resistance is much smaller than that of large-diameter water droplets. Therefore, it will not have a significant impact on the heat exchange efficiency of the condensation grid plate 12.

[0027] The bottom surface of the inner wall of the condenser frame 9 is provided with a slope 17. The slope 17 extends downward from one side of the condenser frame 9 to the other side. A drainage groove is provided at the lowest end of the slope 17. After the condensate drips from the surface of the condenser grid plate 12 onto the slope 17, due to the inclined setting of the slope 17, the condensate automatically flows towards the drainage groove at the lowest end under the action of gravity. This achieves the centralized collection of condensate and avoids the condensate from accumulating in a large area at the bottom of the condenser frame 9 and then re-evaporating into the airflow.

[0028] An extension pipe 15 is fixedly installed inside the drainage trough. The upper end of the extension pipe 15 is connected to the drainage trough, and the lower end extends downward. A water seal trough 14 is fixedly installed on the bottom surface of the condenser frame 9. The water seal trough 14 is U-shaped and contains condensate to form a water seal liquid surface. The bottom end of the extension pipe 15 extends into the water seal trough 14 and is inserted below the water seal liquid surface. An overflow trough 22 is opened at one end of the water seal trough 14. The position of the overflow trough 22 corresponds to the position of the strip groove 20 on the cable mounting plate 10. When the liquid level in the water seal trough 14 rises to the height of the overflow trough 22, the excess water flows out from the overflow trough 22, and the lower end of the extension pipe 15... The extension pipe 15 is always submerged by the water seal liquid surface, thereby blocking the lower port of the extension pipe 15 and preventing airflow from leaking from the drain tank. Since the lower port of the extension pipe 15 is submerged by the water seal liquid surface, the airflow inside the condenser frame 9 is blocked by the water seal liquid surface when it reaches the drain tank downwards, and cannot continue to escape downwards along the extension pipe 15. Meanwhile, the condensate can flow into the water seal tank 14 along the extension pipe 15, and is discharged from the overflow tank 22 after the liquid level rises to the height of the overflow tank 22. This achieves the gas-liquid separation effect of "water can be discharged, but gas cannot be leaked", solving the problem of airflow short circuit caused by the direct opening of the drain outlet in the prior art.

[0029] The cable mounting plate 10 has multiple cable routing holes 21 and multiple strip grooves 20. The cable routing holes 21 allow the cable to pass through the inlet / outlet compartment into the main chamber. The strip grooves 20 are located below the overflow trough 22. Water flowing out of the overflow trough 22 drips into the inlet / outlet compartment through the strip grooves 20 and is finally discharged out of the box through the drain hole on the bottom wall of the distribution box body 1. By setting the strip grooves 20 directly below the overflow trough 22, the condensate discharged from the overflow trough 22 can directly pass through the strip grooves 20 into the inlet / outlet compartment, avoiding the risk of condensate randomly flowing to the cable routing holes 21 on the upper surface of the cable mounting plate 10 and then seeping into the terminal along the cable surface.

[0030] One end of the return air guide trough 5 is sealed and connected to the air outlet side of the condenser frame 9, and the other end extends to the upper part of the distribution box body 1. The return air guide trough 5 is vertically set close to the right inner wall of the distribution box body 1. An air distribution hole 16 is opened on the upper peripheral side wall of the return air guide trough 5, and the air distribution hole 16 faces the electrical component area inside the distribution box body 1. By setting the return air guide trough 5 close to the right inner wall of the distribution box body 1, the return air guide trough 5 does not occupy the installation space of the electrical components inside the distribution box body 1. The dehumidified dry and cold air flows from the condenser... After being discharged from the outlet side of frame 9, the air flows from bottom to top through the return air guide channel 5 to the upper part of the distribution box body 1, and is blown towards the electrical component area through the air distribution hole 16. This achieves the directional delivery of dry and cold air from the bottom dehumidification area to the top air outlet area. By setting the air distribution hole 16 to face the electrical component area, the dry and cold air can directly act on the surface of the electrical components after being blown out. While reducing the temperature of the electrical components, the blowing action of the dry and cold air keeps the surface of the electrical components dry and effectively inhibits the generation of condensation.

[0031] Please combine Figure 5 A baffle plate 13 is fixedly installed in the gap between two adjacent condenser grid plates 12. The baffle plate 13 is wavy, with the crests and troughs of the baffle plate 13 alternating along the airflow direction. The two ends of the baffle plate 13 are fixed to the inner walls of the front and rear sides of the condenser frame 9, respectively. When the airflow passes horizontally through the gap between adjacent condenser grid plates 12, the crests of the baffle plate 13 guide the airflow upward to approach the lower surface of the upper condenser grid plate 12, and the troughs guide the airflow downward to approach the upper surface of the lower condenser grid plate 12. Through the alternating arrangement of crests and troughs, the airflow is forced to flow along an S-shaped undulating path when passing through the gap between the condenser grid plates 12. On the one hand, this prolongs the actual flow path length of the airflow in the gap between the grid plates, increasing the contact time between the airflow and the cold surface of the condenser grid plate 12. On the other hand, as the airflow repeatedly approaches the surfaces of the upper and lower cold grid plates, the water vapor in it has multiple condensation opportunities, which significantly improves the condensation efficiency of a single-layer grid plate gap. This improves the dehumidification efficiency without increasing the number of condenser grid plates 12 or the volume of the condenser frame 9.

[0032] A heat dissipation groove 3 is provided on the side wall of the distribution box body 1. The heat dissipation groove 3 is connected to the outside atmosphere and is used to dissipate the heat inside the distribution box body 1 to the outside, thereby realizing a dual circulation mode that combines internal circulation dehumidification and external circulation heat dissipation.

[0033] Working principle: After the cooling fan 8 is started, a negative pressure is generated at its air inlet. The hot and humid air in the main chamber of the distribution box body 1 is drawn in through the bottom of the heat dissipation jacket 6, passes through the heat dissipation jacket 6 and enters the air inlet of the cooling fan 8. It is discharged from the air outlet of the cooling fan 8 into the air inlet guide groove 4 and flows downward along the air inlet guide groove 4 to the air inlet side of the condenser frame 9. After entering the condenser frame 9, the humid and hot air passes horizontally through the gaps between the condenser grids 12. Water vapor condenses into liquid water on the cold surface of the condenser grids 12. The condensate flows along the condenser guide channel 18 to the edge of the condenser grids 12 and drips onto the slope 17. It flows along the slope 17 to the drain channel and falls into the water seal tank 14 through the extension pipe 15. The water seal tank 14 always maintains a liquid level that submerges the lower end of the extension pipe 15, thereby preventing airflow from leaking from the drain channel. Excess water flows out from the overflow channel 22 and drips into the inlet and outlet cable compartment through the strip groove 20 on the cable mounting plate 10. It is then discharged outside the box through the drain hole on the bottom wall of the distribution box body 1. During this process, the baffle 13 guides the airflow to flow in an S-shaped undulating path as it passes through the gap of the condenser grid 12, thus prolonging the contact time between the airflow and the cold surface of the condenser grid 12. After dehumidification, the dry and cold air is discharged from the air outlet side of the condenser frame 9 into the return air guide channel 5. It rises along the return air guide channel 5 to the upper part of the distribution box body 1, and is blown towards the electrical component area through the air distribution hole 16. After absorbing heat, it becomes humid and hot air, and rises again into the heat dissipation jacket 6 to enter the next cycle.

Claims

1. A smart grid anti-condensation distribution box device with dual-cycle dehumidification, comprising a distribution box body (1), characterized in that: The main body (1) of the distribution box is provided with a heat dissipation jacket (6), a condensation frame (9), an air inlet guide groove (4) and a return air guide groove (5); The heat dissipation interlayer (6) is located above the inside of the main body (1) of the distribution box, and is connected to an airflow drive device. One end of the air inlet guide groove (4) is connected to the air outlet of the airflow drive device, and the other end is connected to the air inlet side of the condenser frame (9); the condenser frame (9) is provided with multiple layers of condenser grids (12), and gaps are left between adjacent condenser grids (12) for airflow to pass through. One end of the return air guide channel (5) is connected to the air outlet side of the condenser frame (9), and the other end extends to the upper part of the distribution box body (1) and is provided with an air distribution hole (16). The air distribution hole (16) faces the electrical component area inside the distribution box body (1); the bottom of the condenser frame (9) is provided with a drainage structure. The airflow drive device draws in the hot and humid air in the main body (1) of the distribution box through the heat dissipation jacket (6), sends it into the condenser frame (9) through the air inlet guide groove (4), and after passing through the condenser grid plate (12) for dehumidification, the dry and cold air rises through the return air guide groove (5) and is blown towards the electrical component area through the air distribution hole (16) to form a directional internal circulation dehumidification air duct.

2. The smart grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 1, characterized in that, The airflow drive device includes a fan mounting frame (7) and a cooling fan (8) disposed in the fan mounting frame (7). The fan mounting frame (7) is fixedly disposed inside the heat dissipation jacket (6). The air outlet of the cooling fan (8) is connected to the air inlet guide groove (4). The air inlet of the cooling fan (8) faces the inside of the heat dissipation jacket (6), and the air outlet is connected to the air inlet guide groove (4). The upper surface of the heat dissipation jacket (6) is provided with a grille (2), which is disposed above the air inlet of the cooling fan (8).

3. The intelligent power grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 2, characterized in that, The fan mounting frame (7) is a C-shaped frame with sealed walls on three sides and one side open. The cooling fan (8) is horizontally embedded in the fan mounting frame (7). The air outlet of the cooling fan (8) faces the open side of the fan mounting frame (7). The open side is connected to the air inlet guide groove (4).

4. The intelligent power grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 1, characterized in that, One end of the air inlet guide groove (4) is connected to the air outlet of the airflow drive device and to the air inlet side of the condenser frame (9); the return air guide groove (5) is vertically set close to the right inner wall of the distribution box body (1), its lower end is connected to the air outlet side of the condenser frame (9), and its upper end extends to the upper part of the distribution box body (1). The air distribution hole (16) is opened on the peripheral side wall at the upper end of the return air guide groove (5).

5. The intelligent power grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 1, characterized in that, Several plug-in seats (11) are fixedly provided on both sides of the inner wall of the condensing frame (9). The two ends of the condensing grid plate (12) are respectively plugged into the plug-in seats (11) of the corresponding height to form a detachable connection. Multiple condensing guide grooves (18) are opened on the upper surface of the condensing grid plate (12). The cross section of the condensing guide groove (18) is V-shaped and extends along the airflow direction.

6. The intelligent power grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 1, characterized in that, The drainage structure includes a slope (17) set on the bottom surface of the inner wall of the condenser frame (9), and a drainage groove is provided at the lowest end of the slope (17); an extension pipe (15) is fixedly provided in the drainage groove; a water seal groove (14) is fixedly provided on the bottom surface of the condenser frame (9); the water seal groove (14) is U-shaped; the bottom end of the extension pipe (15) extends into the water seal groove (14); an overflow groove (22) is provided at one end of the water seal groove (14) for draining excess water from the water seal groove (14).

7. The intelligent power grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 6, characterized in that, The distribution box body (1) is also provided with a cable mounting plate (10). The cable mounting plate (10) is horizontally fixed below the condenser frame (9). The cable mounting plate (10) is provided with multiple cable holes (21) and multiple strip grooves (20). The strip grooves (20) are located below the overflow groove (22) and are used to receive and discharge water flowing out from the overflow groove (22).

8. The smart grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 1, characterized in that, A baffle plate (13) is fixedly provided in the gap between two adjacent condensation grid plates (12). The baffle plate (13) is wavy and is used to guide the airflow to flow in an S-shaped path when passing through the gap between adjacent condensation grid plates (12).

9. The intelligent power grid anti-condensation distribution box device with dual-cycle dehumidification according to claim 1, characterized in that, The distribution box body (1) has a heat dissipation groove (3) on its side wall. The heat dissipation groove (3) is connected to the outside atmosphere and is used to dissipate the heat inside the distribution box body (1) to the outside.

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