A waterproof and moisture-proof AC low-voltage distribution cabinet

Abstract

The present invention discloses a waterproof and moisture-proof AC low-voltage distribution cabinet, which relates to the field of electric power technology. The cabinet comprises a sealed box and a support box. A cooling and dehumidifying mechanism is installed in the support box. The cooling and dehumidifying mechanism comprises a first fan and a dehumidifying chamber. The dehumidifying chamber comprises a first chamber body and a second chamber body. A plurality of semiconductor refrigeration plates are installed on the side wall of the first chamber body. The semiconductor refrigeration plates comprise a cooling end and a heating end. The cooling end faces the first chamber body, and the heating end faces the second chamber body. A plurality of vents are provided at the bottom of the first chamber body. A plurality of air outlets and a plurality of air extraction ports are provided on the inner wall of the sealed box. The air outlets and the air extraction ports are arranged opposite to each other. A third air duct is provided between the air outlet and the first chamber body. The air extraction port is connected to a fourth air duct. In this way, the flowing air carries heat away from the heating end, which accelerates the cooling efficiency of the cooling end. The temperature of the air drops sharply after entering the first chamber body, which accelerates the condensation speed of water vapor.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, in particular to a waterproof and moisture-proof AC low-voltage distribution cabinet. Background Art

[0002] The distribution cabinet is a general term for the motor control system center. The distribution cabinet is generally used in situations where there are fewer circuits and the load is relatively dispersed, while the motor control center is generally used in situations where there are many circuits and the load is relatively concentrated. They distribute the power of a circuit of the upper-level distribution equipment to the nearest load, and the distribution cabinet is a device that can provide protection, monitoring and control for the load.

[0003] Because the cabinet integrates electrical components such as circuit breakers, contactors, and instruments, the high-density heat generated during operation needs to be promptly dissipated through the heat dissipation structure. Existing technologies often use natural convection heat dissipation solutions, which achieve air circulation by providing ventilation holes on both sides of the cabinet.

[0004] However, during heavy rain, rainwater can easily enter the distribution cabinet through the ventilation holes, damaging internal electrical components. Existing rain protection measures typically involve installing waterproof covers, but these impede air flow, significantly reducing the cabinet's cooling efficiency. This can accelerate the aging of electrical components due to high temperatures. Therefore, achieving waterproof and moisture-proof distribution cabinets while maintaining efficient heat dissipation has become a pressing technical challenge in this field. Summary of the Invention

[0005] In view of the above defects, the purpose of the present invention is to provide a waterproof and moisture-proof AC low-voltage distribution cabinet, aiming to solve the problem in the prior art that it is difficult to achieve waterproof and moisture-proof distribution cabinets while maintaining efficient heat dissipation.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] A waterproof and moisture-proof AC low-voltage distribution cabinet, comprising a sealed box and a support box, the support box being located at the bottom of the sealed box, an air inlet being provided on one side of the support box, and an air exhaust being provided on the other side of the support box, a cooling and dehumidifying mechanism being installed in the support box, the cooling and dehumidifying mechanism comprising a first fan and a dehumidifying bin, the dehumidifying bin comprising a first bin body and a second bin body, the first bin body being located inside the second bin body, a plurality of semiconductor refrigeration sheets being installed on the side walls of the first bin body, the semiconductor refrigeration sheets comprising a cooling end and a heating end, the cooling end facing the inside of the first bin body, the heating end facing the side wall of the second bin body, a first air duct being provided between the first fan and the top of the second bin body, a plurality of vents being provided at the bottom of the first bin body, one end of the vent being connected to the first bin body, and the other end of the vent being connected to the second bin body;

[0008] A plurality of air outlets and a plurality of air exhaust ports are provided on the inner wall of the sealed box. The air outlets and the air exhaust ports are arranged opposite to each other. A third air duct is provided between the air outlet and the first warehouse body. The air exhaust port is connected to a fourth air duct. The end of the fourth air duct away from the sealed box is connected to the exhaust port.

[0009] In which, the dehumidification bin also includes a third bin body, the third bin body is arranged around the second bin body, the heating end is connected to a heat pipe, the heat pipe extends toward the third bin body, and at least part of the heat pipe is located in the third bin body; a multi-way valve is provided between the third bin body and the first fan, an air inlet duct is provided between the multi-way valve and the first fan, one end of the first air duct is connected to the multi-way valve, and the other end of the first air duct is connected to the second bin body, a second air duct is provided between the multi-way valve and the top of the third bin body, and an air outlet is provided at the bottom of the third bin body.

[0010] The heat pipe is a U-shaped heat pipe, a heat conducting plate is provided between the middle area of the U-shaped heat pipe and the heating end, the heat conducting plate is thermally connected to the U-shaped heat pipe, and thermal conductive glue is filled between the heat conducting plate and the heating end.

[0011] Among them, a fixing plate is connected to the outer wall of the U-shaped heat pipe, and the fixing plate is located in the third warehouse body. A limiting spring is arranged between the fixing plate and the side wall of the second warehouse body. A first threaded hole is arranged on the fixing plate, and a second threaded hole matching the first threaded hole is arranged on the side wall of the second warehouse body. The first threaded hole and the second threaded hole are connected by bolts.

[0012] Wherein, a plurality of heat sinks are arranged on the side wall of the U-shaped heat pipe, a part of the heat sinks are located in the second compartment, and another part of the heat sinks are located in the third compartment.

[0013] Among them, a plurality of fixing holes are provided on the side wall of the first warehouse body, one end of the fixing hole faces the interior of the first warehouse body, and the other end of the fixing hole extends toward the second warehouse body, the semiconductor refrigeration plate is installed in the fixing hole, and a plurality of condensation nets are provided in the first warehouse body. The semiconductor refrigeration plate is arranged around the condensation net, and the refrigeration end is thermally connected to the condensation net.

[0014] Wherein, a collecting trough is provided at the bottom of the first bin body, and a drainage pipe is connected to the bottom of the collecting trough.

[0015] Wherein, the cooling and dehumidifying mechanism further includes a filter plate, the first fan includes an air inlet cover, an exhaust duct is provided between the air inlet cover and the first fan, and the filter plate covers the air inlet cover.

[0016] In which, a filter chamber is also installed in the support box, the filter disc is located in the filter chamber, the filter disc includes a support ring and a support shaft, the support shaft is located at the center of the support ring, and a filter screen is arranged between the support ring and the support shaft; the filter chamber includes a dust removal area and a cleaning area, an isolation strip is arranged between the dust removal area and the cleaning area, the air inlet hood covers the dust removal area, an isolation bin is installed on the top of the cleaning area, a water tank is installed in the isolation bin, a water spray head and a blowing head are installed between the isolation bin and the cleaning area, a micro water pump is installed between the water spray head and the water tank, the water tank and the water spray head are connected to the micro water pump pipe, the water tank is connected to the end of the drainage pipe away from the first bin body; the end of the fourth air duct away from the exhaust port is connected to the blowing head.

[0017] wherein a collecting bin is provided on the side of the cleaning area away from the isolation bin, the top of the collecting bin covers the cleaning area, the bottom of the collecting bin is connected to a separation box, a second fan is provided between the separation box and the exhaust port, a fifth pipe is provided between the separation box and the second fan, a sixth pipe is provided between the second fan and the exhaust port, and a water outlet pipe is provided between the separation box and the outer wall of the support bin; a driving motor is installed on the side wall of the isolation bin, an annular groove is provided on the outer wall of the support ring, a power wheel is installed on the power end of the driving motor, and a driving belt is provided between the power wheel and the annular groove; the isolation strip includes a fixed arm and a rubber strip, a bearing sleeve is provided around the wall of the support shaft, one end of the fixed arm is connected to the inner wall of the filter chamber, and the other end of the fixed arm is connected to the outer wall of the bearing sleeve, and the rubber strip is in contact with the filter screen.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] First, the sealed box is individually sealed, and the air needs to be dried and cooled by the cooling and dehumidification mechanism before it is sent into the sealed box. This avoids the problem of water vapor entering the distribution cabinet due to direct air convection in traditional distribution cabinet technology, and then causing short circuits due to humidity. Second, after entering the cooling and dehumidification mechanism, the air is first heated by the heating end in the second bin, and then enters the first bin to be cooled by the cooling end to condense moisture. During this process, the flowing air carries heat away from the heating end, which accelerates the cooling efficiency of the cooling end; at the same time, due to the high air temperature, the air temperature drops sharply after entering the first bin, which accelerates the condensation of water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the waterproof and moisture-proof AC low-voltage distribution cabinet in Example 1;

[0021] Figure 2 This is the internal piping connection diagram of the power distribution cabinet;

[0022] Figure 3 This is the structural diagram of the dehumidification chamber;

[0023] Figure 4 for Figure 3 A partial enlarged view of a in the middle;

[0024] Figure 5 This is a diagram of the heat pipe structure in Example 1;

[0025] Figure 6 This is a diagram of the heat pipe structure in Example 2;

[0026] Figure 7 This is a structural diagram of the waterproof and moisture-proof AC low-voltage distribution cabinet in Example 3;

[0027] Figure 8 This is a structural diagram of the support box in Example 3;

[0028] Figure 9 It is the structural diagram of the filter disc;

[0029] Figure 10 is a top view of the filter disc;

[0030] Figure 11 Diagram of the structure of the isolation strip.

[0031] In the figure:

[0032] 1-sealed box, 11-air outlet, 12-exhaust outlet, 13-third air duct, 14-fourth air duct, 2-support box, 21-air inlet, 22-exhaust outlet, 23-multi-way valve, 231-second air duct, 232-air inlet duct, 3-cooling and dehumidification mechanism, 31-dehumidification chamber, 311-first chamber body, 3111-collection tank, 312-second chamber body, 313-third chamber body, 314-air outlet, 32-first fan, 321-exhaust duct, 322-air inlet cover, 33-semiconductor refrigeration plate, 331-cooling end, 332-heating end, 333-heat pipe, 3331-heat sink, 334-heat conducting plate, 335-thermal conductive glue, 336-fixing plate, 337-limiting spring, 338- First threaded hole, 339-second threaded hole, 340-bolt, 34-first air duct, 35-vent, 36-baffle, 37-condensation net, 38-drainage pipe, 4-filter plate, 41-filter chamber, 42-support ring, 43-support shaft, 44-filter screen, 45-isolation strip, 451-fixed arm, 452-rubber strip, 46-dust removal area, 47-cleaning area, 48-bearing sleeve, 5-isolation chamber, 51-water tank, 52-micro water pump, 53-spray head, 54-blowing head, 6-collecting chamber, 61-separation box, 62-fifth pipeline, 63-water outlet pipeline, 64-second fan, 65-sixth pipeline, 7-drive motor, 71-power wheel, 72-annular groove, 73-drive belt. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Example 1:

[0035] like Figure 1-5 The figure shows a waterproof and moisture-proof AC low-voltage distribution cabinet, comprising a sealing box 1 and a support box 2, with the support box 2 located at the bottom of the sealing box 1. The sealing box 1 in this embodiment is used to hold various electrical components. To ensure sealing and reduce the possibility of moisture inside the electronic components, the sealing box 1 in this embodiment does not have ventilation holes to guide airflow. In addition, the through holes for guiding the entry and exit of the circuits are filled with sealing gaskets to reduce the possibility of external air directly entering the sealing box 1.

[0036] Due to the high sealing performance of the sealed box 1, although the probability of moisture entering the sealed box 1 is reduced, the lack of air flow will cause overheating and damage to the electronic components in the sealed box 1. For this reason, the present solution introduces the support box 2 and the cooling and dehumidification mechanism 3.

[0037] An air inlet 21 is provided on one side of the support box 2, and an air outlet 22 is provided on the other side of the support box 2. A cooling and dehumidification mechanism 3 is installed in the support box 2, and the cooling and dehumidification mechanism 3 includes a first fan 32 and a dehumidification bin 31. The dehumidification bin 31 includes a first bin body 311 and a second bin body 312. The first bin body 311 is located inside the second bin body 312. A plurality of semiconductor refrigeration plates 33 are installed on the side wall of the first bin body 311. The semiconductor refrigeration plates 33 include a cooling end 331 and a heating end 332. The cooling end 331 faces the inside of the first bin body 311, and the heating end 332 faces the side wall of the second bin body 312. A first air duct 34 is provided between the first fan 32 and the top of the second bin body 312. A plurality of air vents 35 are provided at the bottom of the first bin body 311. One end of the air vent 35 is connected to the first bin body 311, and the other end of the air vent 35 is connected to the second bin body 312.

[0038] The air inlet 21 leaves space for air to enter the interior of the support box 2. In order to reduce the amount of rainwater entering the support box 2 through the air inlet 21 during heavy rain, a baffle 36 is obliquely provided on the outside of the air inlet 21, that is, on the side wall of the support box 2. The baffle 36 is located at the top of the air inlet 21. The obliquely provided baffle 36 can prevent rainwater falling from above or diagonally above from directly passing through the air inlet 21 to reach the interior of the support box 2. However, this design also hinders the flow speed of the air. For this reason, the present solution introduces a first fan 32. The first fan 32 draws air and transports the air to the second bin body 312 through the first air duct 34. The flowing air then passes through the second bin body 312 and the vent 35 to reach the first bin body 311.

[0039] The semiconductor refrigeration chip 33 is a heat transfer tool. When current flows through a thermocouple pair composed of an N-type semiconductor material and a P-type semiconductor material, heat transfer occurs between the two ends, and heat is transferred from one end to the other, resulting in a temperature difference between the hot and cold ends.

[0040] Taking advantage of these characteristics, the cooling end 331 of the semiconductor cooling plate 33 is oriented toward the first chamber 311, and the heating end 332 of the semiconductor cooling plate 33 is oriented toward the second chamber 312. Upon powering on, the temperature in the first chamber 311 gradually decreases, while the temperature in the second chamber 312 gradually increases. The first fan 32 draws ambient air into the second chamber 312, where it is heated. When the heated air passes through the vents 35 and reaches the first chamber 311, the moisture carried in the hot air rapidly condenses into droplets upon entering the cooler environment. Simultaneously, the hot air is cooled to cool, dry air.

[0041] In this embodiment, there are multiple vents 35, which are arranged around the outer wall of the first chamber 311. This design allows the airflow entering the first chamber 311 to form a spiral airflow, which increases the heat exchange area between the air and the cooling end 331, thereby accelerating the cooling rate of the air and the condensation rate of water vapor in the air.

[0042] In order to facilitate the entry of low-temperature dry air into the sealed box 1 and cool down the various electrical components, a plurality of air outlets 11 and a plurality of air exhaust ports 12 are provided on the inner wall of the sealed box 1. The air outlets 11 and the air exhaust ports 12 are arranged opposite to each other. A third air duct 13 is provided between the air outlet 11 and the first warehouse body 311. The air exhaust port 12 is connected to a fourth air duct 14. The end of the fourth air duct 14 away from the sealed box 1 is connected to the exhaust port 22.

[0043] Low-temperature, dry air is distributed to each air outlet 11 through the third air duct 13. The low-temperature, dry air then enters the sealed box 1 through the air outlet 11, where it exchanges heat with the electrical components. The heated air then enters the fourth air duct 14 through the air intake duct 12, and travels along the fourth air duct 14 through the air outlet 22 to the outside world. During this process, the flowing low-temperature, dry air continuously displaces the air within the sealed box 1. Therefore, even if the air within the sealed box 1 contains moisture, the constant displacement of the low-temperature, dry air allows the moisture within the sealed box 1 to be continuously expelled. This ensures a dry environment within the sealed box 1 and prevents heat accumulation and damage to the electrical components within the sealed box 1.

[0044] Since the cooling efficiency of the cooling end 331 is affected by the heat dissipation efficiency of the heating end 332, in order to increase the cooling efficiency, it is necessary to ensure the heat dissipation efficiency of the heating end 332. To this end, the dehumidification chamber 31 further includes a third chamber 313, which is arranged around the second chamber 312. The heating end 332 is connected to a heat pipe 333, which extends toward the third chamber 313, and at least a portion of the heat pipe 333 is located within the third chamber 313. A multi-way valve 23 is provided between the third chamber 313 and the first fan 32, and an air inlet duct 232 is provided between the multi-way valve 23 and the first fan 32. One end of the first air duct 34 is connected to the multi-way valve 23, and the other end of the first air duct 34 is connected to the second chamber 312. A second air duct 231 is provided between the multi-way valve 23 and the top of the third chamber 313, and an air outlet 314 is provided at the bottom of the third chamber 313.

[0045] The heat pipe 333 is thermally connected to the heating end 332, which increases the heat dissipation area of the heating end 332 and thus speeds up the heat dissipation efficiency of the heating end 332. The multi-way valve 23 divides the air guided by the first fan 32 into two parts, one part of which reaches the inside of the sealed box 1 along the path of the first air duct 34-the second bin 312-the vent 35-the first bin 311-the third air duct 13-the air outlet 11; the air outlet 314 in this solution is connected to the outer wall of the support box 2, so another part of the air will reach the inside of the third bin 313 along the second air duct 231, and then reach the outside through the air outlet 314. In this process, the heat dissipation efficiency is further accelerated by increasing the heat dissipation area of the heating end 332, thereby ensuring the cooling efficiency of the cooling end 331. At the same time, the heat of the heating end 332 is also recovered to a certain extent, which reduces the overall energy consumption.

[0046] In order to further speed up the heat dissipation efficiency, the heat pipe 333 is a U-shaped heat pipe 333, and a heat conducting sheet 334 is provided between the middle area of the U-shaped heat pipe 333 and the heating end 332. The heat conducting sheet 334 is thermally connected to the U-shaped heat pipe 333, and a heat conducting glue 335 is filled between the heat conducting sheet 334 and the heating end 332. The heat conducting sheet 334 is a metal sheet with high heat transfer efficiency, which increases the overall heat dissipation area. In order to increase the heat transfer efficiency between the heat conducting sheet 334 and the heating end 332, we need to avoid the presence of a gap between the two. To this end, this solution introduces a heat conducting glue 335, and uses the heat conducting glue 335 to fill the gap and increase the heat transfer efficiency between the two. The U-shaped heat pipe 333 exchanges heat with the heat conducting sheet 334 through its middle area, and then transfers the heat to both ends, which further speeds up the heat dissipation efficiency.

[0047] To facilitate close contact between the heat conducting sheet 334 and the heating end 332, a fixing plate 336 is connected to the outer wall of the U-shaped heat pipe 333. The fixing plate 336 is located within the third chamber 313. A limit spring 337 is provided between the fixing plate 336 and the side wall of the second chamber 312. A first threaded hole 338 is provided on the fixing plate 336, and a second threaded hole 339 is provided on the side wall of the second chamber 312 to match the first threaded hole 338. The first and second threaded holes 338 and 339 are connected by a bolt 340. During use, the bolt 340 is tightened and gradually extends into the second threaded hole 339. During this process, the fixing plate 336 is displaced toward the first chamber 311 and squeezes the limit spring 337. At the same time, the U-shaped heat pipe 333 and the heat conducting sheet 334 on the U-shaped heat pipe 333 gradually come into close contact with the heating end 332.

[0048] It's worth noting that the thermal pad 334 is thermally connected to the U-shaped heat pipe 333, and the end of the thermal pad 334 facing the heating end 332 is coated with thermal adhesive 335. As the bolt 340 extends into the second threaded hole 339, the thermal pad 334 gradually tightens against the heating end 332, and the thermal adhesive 335 fills the gap between the two, increasing the thermal contact area between the two.

[0049] In this embodiment, the limiting spring 337 has multiple functions. First, the limiting spring 337 limits the U-shaped heat pipe 333 by connecting the fixing plate 336 to the outer wall of the second chamber 312, preventing the U-shaped heat pipe 333 from moving freely and leaving sufficient space for the first chamber 311 to be inserted into the second chamber 312. Second, the limiting spring 337 is thermally connected to the fixing plate 336, which allows the temperature on the U-shaped heat pipe 333 to be transferred to the limiting spring 337, thereby increasing the heat dissipation area of the U-shaped heat pipe 333.

[0050] In order to facilitate the installation of the semiconductor refrigeration plate 33, a plurality of fixing holes are provided on the side wall of the first warehouse body 311, one end of the fixing hole is directed toward the interior of the first warehouse body 311, and the other end of the fixing hole extends toward the second warehouse body 312. The semiconductor refrigeration plate 33 is installed in the fixing hole. A plurality of condensation nets 37 are provided in the first warehouse body 311. The semiconductor refrigeration plate 33 is arranged around the condensation net 37, and the cooling end 331 is thermally connected to the condensation net 37.

[0051] This design enables the cooling end 331 of the semiconductor refrigeration plate 33 to directly contact the interior of the first chamber 311, and the condensation network 37 is thermally connected to the cooling end 331, which also increases the heat exchange area between the cooling end 331 and the flowing air in the first chamber 311, thereby accelerating the cooling speed of the flowing air. At the same time, this also accelerates the condensation speed of water vapor in the air, thereby accelerating the drying speed of the air.

[0052] To prevent air from flowing directly through the fixing holes between the first and second chambers 311 and 312, a heat-insulating layer is placed between the fixing holes and the sidewalls of the semiconductor cooling fins 33. This layer serves two purposes: first, it fills the gap, reducing air flow; second, it secures the semiconductor cooling fins 33.

[0053] Water vapor in the first chamber 311 condenses on the condensation net 37 to form droplets. As the liquid gradually gathers, the droplets fall under the influence of gravity. To prevent the droplets from gathering at the bottom of the first chamber 311 and affecting air flow, a collection trough 3111 is provided at the bottom of the first chamber 311. The bottom of the collection trough 3111 is connected to a drainage pipe 38. One end of the drainage pipe 38 is connected to the outer wall of the support box 2. At this time, the water in the collection trough 3111 is discharged to the outside through the drainage pipe 38. For convenient control, the drainage pipe 38 can be connected to an electrically controlled valve.

[0054] Example 2:

[0055] like Figure 6 As shown, in order to further increase the heat dissipation rate of the U-shaped heat pipe 333, a plurality of heat sinks 3331 are provided on the side wall of the U-shaped heat pipe 333, part of the heat sinks 3331 are located in the second chamber 312, and the other part of the heat sinks 3331 are located in the third chamber 313.

[0056] Example 3:

[0057] like Figure 7-11 As shown, to reduce the probability of dust intrusion, the cooling and dehumidifying mechanism 3 further includes a filter tray 4. The first fan 32 includes an air inlet cover 322. An exhaust duct 321 is provided between the air inlet cover 322 and the first fan 32. The filter tray 4 covers the air inlet cover 322. The air drawn by the first fan 32 is filtered by the filter tray 4. During this process, suspended particles carried in the air are intercepted, thereby slowing the accumulation of suspended particles within the sealed box 1.

[0058] During long-term use of the filter disc 4, suspended particles will clog the filter disc 4, which will reduce the air passing capacity of the filter disc 4 and slow down the flow of air. In order to avoid this situation, the conventional practice is for the staff to replace the filter disc 4 regularly. However, the replacement process of the filter disc 4 is relatively troublesome. For this reason, a filter chamber 41 is also installed in the support box 2. The filter disc 4 is located in the filter chamber 41. The filter disc 4 includes a support ring 42 and a support shaft 43. The support shaft 43 is located at the center of the support ring 42. A filter screen 44 is provided between the support ring 42 and the support shaft 43. The filter chamber 41 includes a dust removal area 46 and a cleaning area 47. An isolation strip 45 is provided between the dust removal area 46 and the cleaning area 47. The air inlet hood 322 covers the dust removal area 4 6. An isolation chamber 5 is installed on the top of the cleaning area 47, and a water tank 51 is installed in the isolation chamber 5. A water spray head 53 and a blower head 54 are installed between the isolation chamber 5 and the cleaning area 47. A micro water pump 52 is installed between the water spray head 53 and the water tank 51. The water tank 51 and the water spray head 53 are both connected to the micro water pump 52 through a pipe. The water tank 51 is connected to the end of the drainage pipe 38 away from the first chamber body 311; the end of the fourth air duct 14 away from the exhaust port 12 is connected to the blower head 54.

[0059] The isolation bars 45 in this solution are divided into two groups, one above the other, each group consisting of two bars. The two isolation bars 45 are symmetrically arranged about the support shaft 43. The isolation bars 45 divide the isolation chamber into a dust removal zone 46 and a cleaning zone 47. The dust removal zone 46 prevents suspended particles in the air from entering the air inlet hood 322, while the cleaning zone 47 cleans the filter 44 to a certain extent. To this end, this solution introduces a water tank 51. The water tank 51 is used to store condensed water generated in the first chamber 311. When the condensed water reaches a certain amount, the micro-pump 52 is activated, sending the condensed water in the water tank 51 to the water spray head 53. The water spray head 53 then sprays the condensed water onto the upper surface of the filter 44. During this process, the micro-pump 52 pressurizes the condensed water, causing it to flow at high speed. The condensed water then impacts the filter 44, thereby cleaning the dust accumulated on the filter 44. Due to the obstruction of the isolation bars 45, splashing water droplets and dust during cleaning are less likely to affect the dust removal zone 46. After cleaning is completed, we still need to perform drying work. For this purpose, the exhaust port 12 sends the air in the sealed box 1 to the blowing head 54 through the fourth pipe, and sends it toward the filter 44 through the blowing head 54. Since the air in the sealed box 1 is heated by the electrical components during operation, the flowing air with a temperature higher than room temperature will take away the moisture on the filter 44 during the process of passing through the filter 44. At the same time, the filter 44 is impacted again to take away some of the remaining dust on the filter 44, completing the cleaning of the filter 44.

[0060] In order to facilitate the collection of condensed water sprayed by the water spray head 53 and hot air blown by the blowing head 54, a collection bin 6 is provided on the side of the cleaning area 47 away from the isolation bin 5. The top of the collection bin 6 covers the cleaning area 47, and the bottom of the collection bin 6 is connected to the separation box 61. A second fan 64 is provided between the separation box 61 and the exhaust port 22, a fifth pipe 62 is provided between the separation box 61 and the second fan 64, a sixth pipe 65 is provided between the second fan 64 and the exhaust port 22, and a water outlet pipe 63 is provided between the separation box 61 and the outer wall of the support bin.

[0061] After cleaning the filter 44, the condensed water sprayed from the water spray head 53 passes through the collection chamber 6 to the separation box 61, and is then discharged to the outside through the outlet pipe 63. The flowing air then passes through the filter 44, the collection chamber 6, the separation box 61, the fifth pipe 62, the second fan 64, and the sixth pipe 65, before being discharged to the outside. During this process, the flowing air will carry away the droplets remaining on the filter 44. Some of the heavier droplets will fall into the separation box 61 and be discharged through the outlet pipe 63; the lighter droplets will follow the flowing air and be discharged through the exhaust port 22.

[0062] In order to facilitate the cleaning of the entire filter 44, we need to change the position between the cleaning area 47 and the dust removal area 46. To this end, a drive motor 7 is installed on the side wall of the isolation chamber 5, and an annular groove 72 is provided on the outer wall of the support ring 42. A power wheel 71 is installed at the power end of the drive motor 7, and a drive belt 73 is provided between the power wheel 71 and the annular groove 72. The drive motor 7 drives the support ring 42 to rotate via the drive belt 73. When the support ring 42 rotates, it drives the filter 44 to rotate, which ensures that all areas on the filter 44 can be cleaned.

[0063] To prevent the isolation strip 45 from rotating with the filter screen 44, it includes a fixed arm 451 and a rubber strip 452. A bearing sleeve 48 is provided around the wall of the support shaft 43. One end of the fixed arm 451 is connected to the inner wall of the filter chamber 41, and the other end of the fixed arm 451 is connected to the outer wall of the bearing sleeve 48. The rubber strip 452 is in contact with the filter screen 44. This design ensures that the isolation sleeve remains stationary during the rotation of the support shaft 43, thereby preventing the cleaning area 47 from communicating with the dust removal area 46.

[0064] In summary, the advantages of this solution are: First, the sealed box 1 is sealed separately, and the air needs to be dried and cooled by the cooling and dehumidification mechanism 3 before it can be sent into the sealed box 1. This avoids the problem of water vapor entering the distribution cabinet due to direct air convection in traditional distribution cabinet technology, and then causing short circuits due to humidity. Second, after the air enters the cooling and dehumidification mechanism 3, it is first heated by the heating end 332 in the second bin 312, and then enters the first bin 311 and is cooled by the cooling end 331 to condense moisture. In this process, the flowing air carries heat away from the heating end 332, which accelerates the cooling efficiency of the cooling end 331; at the same time, since the air temperature is relatively high, the temperature of the air drops sharply after entering the first bin 311, which accelerates the condensation rate of water vapor.

[0065] The present invention is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned concept without creative work are all within the scope of protection of the present invention.

Claims

1. A waterproof and moisture-proof AC low-voltage distribution cabinet, characterized by: The invention comprises a sealed box (1) and a support box (2), wherein the support box (2) is located at the bottom of the sealed box (1), an air inlet (21) is provided on one side of the support box (2), and an air outlet (22) is provided on the other side of the support box (2), a cooling and dehumidifying mechanism (3) is installed in the support box (2), the cooling and dehumidifying mechanism (3) comprises a first fan (32) and a dehumidifying chamber (31), the dehumidifying chamber (31) comprises a first chamber body (311) and a second chamber body (312), the first chamber body (311) is located inside the second chamber body (312), and a cooling and dehumidifying mechanism (3) is installed on the side wall of the first chamber body (311). A plurality of semiconductor refrigeration sheets (33) are installed, wherein the semiconductor refrigeration sheets (33) include a cooling end (331) and a heating end (332), wherein the cooling end (331) faces the interior of the first bin (311), and the heating end (332) faces the side wall of the second bin (312), a first air duct (34) is provided between the first fan (32) and the top of the second bin (312), and a plurality of ventilation holes (35) are provided at the bottom of the first bin (311), wherein one end of the ventilation hole (35) is connected to the first bin (311), and the other end of the ventilation hole (35) is connected to the second bin (312); A plurality of air outlets (11) and a plurality of air extraction ports (12) are provided on the inner wall of the sealed box (1), the air outlets (11) and the air extraction ports (12) being arranged opposite to each other, a third air duct (13) being provided between the air outlets (11) and the first chamber (311), the air extraction ports (12) being connected to a fourth air duct (14), and the end of the fourth air duct (14) away from the sealed box (1) being connected to the air exhaust port (22).

2. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 1, characterized in that: The dehumidification chamber (31) further comprises a third chamber (313), the third chamber (313) being arranged around the second chamber (312), the heating end (332) being connected to a heat pipe (333), the heat pipe (333) extending toward the third chamber (313), and at least a portion of the heat pipe (333) being located within the third chamber (313); a multi-way valve (23) being arranged between the third chamber (313) and the first fan (32), an air inlet duct (232) being arranged between the multi-way valve (23) and the first fan (32), one end of the first air duct (34) being connected to the multi-way valve (23), and the other end of the first air duct (34) being connected to the second chamber (312), a second air duct (231) being arranged between the multi-way valve (23) and the top of the third chamber (313), and an air outlet (314) being provided at the bottom of the third chamber (313).

3. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 2, characterized in that: The heat pipe (333) is a U-shaped heat pipe (333), a heat conducting sheet (334) is provided between the middle region of the U-shaped heat pipe (333) and the heating end (332), the heat conducting sheet (334) is heat-conductingly connected to the U-shaped heat pipe (333), and a heat conducting glue (335) is filled between the heat conducting sheet (334) and the heating end (332).

4. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 3, characterized in that: A fixing plate (336) is connected to the outer wall of the U-shaped heat pipe (333), and the fixing plate (336) is located in the third bin body (313). A limiting spring (337) is provided between the fixing plate (336) and the side wall of the second bin body (312). A first threaded hole (338) is provided on the fixing plate (336), and a second threaded hole (339) that matches the first threaded hole (338) is provided on the side wall of the second bin body (312). The first threaded hole (338) and the second threaded hole (339) are connected by a bolt (340).

5. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 4, characterized in that: A plurality of heat sinks (3331) are provided on the side wall of the U-shaped heat pipe (333), a portion of the heat sinks (3331) are located in the second bin body (312), and another portion of the heat sinks (3331) are located in the third bin body (313).

6. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 1, characterized in that: A plurality of fixing holes are provided on the side wall of the first silo (311), one end of the fixing hole faces the interior of the first silo (311), and the other end of the fixing hole extends toward the second silo (312), the semiconductor refrigeration plate (33) is installed in the fixing hole, a plurality of condensation nets (37) are provided in the first silo (311), the semiconductor refrigeration plate (33) is arranged around the condensation net (37), and the refrigeration end (331) is thermally connected to the condensation net (37).

7. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 1, characterized in that: A collecting trough (3111) is provided at the bottom of the first bin body (311), and a drainage pipe (38) is connected to the bottom of the collecting trough (3111).

8. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 7, characterized in that: The cooling and dehumidifying mechanism (3) further includes a filter plate (4), the first fan (32) includes an air inlet cover (322), an exhaust duct (321) is provided between the air inlet cover (322) and the first fan (32), and the filter plate (4) covers the air inlet cover (322).

9. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 8, characterized in that: A filter chamber (41) is further installed in the support box (2), the filter disc (4) is located in the filter chamber (41), the filter disc (4) includes a support ring (42) and a support shaft (43), the support shaft (43) is located at the center of the support ring (42), and a filter screen (44) is provided between the support ring (42) and the support shaft (43); the filter chamber (41) includes a dust removal area (46) and a cleaning area (47), an isolation strip (45) is provided between the dust removal area (46) and the cleaning area (47), the air inlet cover (322) covers the dust removal area (46), and the cleaning area (47) is provided with a filter screen (44). 7) is installed on the top of an isolation chamber (5), a water storage tank (51) is installed in the isolation chamber (5), a water spray head (53) and a blower head (54) are installed between the isolation chamber (5) and the cleaning area (47), a micro water pump (52) is installed between the water spray head (53) and the water storage tank (51), the water storage tank (51) and the water spray head (53) are connected to the micro water pump (52) through a pipe, the water storage tank (51) is connected to the end of the drainage pipe (38) away from the first chamber (311); the end of the fourth air duct (14) away from the air exhaust port (12) is connected to the blower head (54).

10. The waterproof and moisture-proof AC low-voltage distribution cabinet according to claim 9, characterized in that: A collecting bin (6) is provided on one side of the cleaning area (47) away from the isolation bin (5), the top of the collecting bin (6) covers the cleaning area (47), the bottom of the collecting bin (6) is connected to a separation box (61), a second fan (64) is provided between the separation box (61) and the exhaust port (22), a fifth pipe (62) is provided between the separation box (61) and the second fan (64), a sixth pipe (65) is provided between the second fan (64) and the exhaust port (22), and a water outlet pipe (63) is provided between the separation box (61) and the outer wall of the support bin; a driving motor is installed on the side wall of the isolation bin (5). The machine (7) is provided with an annular groove (72) on the outer wall of the support ring (42), a power wheel (71) is installed on the power end of the drive motor (7), and a drive belt (73) is provided between the power wheel (71) and the annular groove (72); the isolation strip (45) includes a fixed arm (451) and a rubber strip (452), a bearing sleeve (48) is provided around the wall of the support shaft (43), one end of the fixed arm (451) is connected to the inner wall of the filter chamber (41), and the other end of the fixed arm (451) is connected to the outer wall of the bearing sleeve (48), and the rubber strip (452) is in contact with the filter screen (44).

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