Dehumidifier and ring main unit

Abstract

The invention discloses a dehumidifier and a ring main unit, and the dehumidifier comprises a housing which is provided with an air inlet, a first air outlet and a second air outlet, and the inner wall of the housing is provided with a first fan communicated with the air inlet; the dehumidification assembly is arranged in the shell and comprises a filter disc, partition plates, a support, a motor, a transmission belt, a rotating shaft and a bearing seat, the partition plates are arranged on the front end face of the filter disc at intervals and divide the filter disc into a moisture absorption area and a heating area, the front end of the moisture absorption area communicates with the air inlet through a first fan, and the rear end of the moisture absorption area communicates with the second air outlet; the front end of the heating area is communicated with the first air outlet; the transmission belt is wound on the periphery of the filter disc and is in transmission connection with the motor; the heating assembly is arranged in the shell and located on the rear end face of the filtering disc, the heating assembly comprises a second fan and a heater, and the second fan communicates with the rear end of the heating area through the heater. The dehumidifier is good in dehumidification effect, the dehumidification efficiency is improved, and condensation can be prevented from being formed in the ring main unit.

Description

Technical Field

[0001] The invention relates to the technical field of transmission and distribution electrical equipment, in particular to a dehumidifier and a ring network cabinet. Background Art

[0002] In an environment with high humidity, moisture and condensation are ubiquitous hazards to distribution network equipment. Condensation can easily cause corrosion and jamming of switch transmission mechanisms, rust of secondary line terminals, and corrosion of primary cabinets.

[0003] At present, the ring main unit usually adopts fans for ventilation to circulate the internal air to achieve the effect of reducing humidity. However, in the face of a high humidity environment, even if the ring main unit is ventilated, condensation will still form inside the cabinet. It is necessary to place an appropriate amount of desiccant, such as silica gel, activated carbon, etc., in the distribution cabinet to absorb moisture in the cabinet and keep the environment dry. However, the desiccant needs to be replaced regularly. As time goes by, the drying effect of the desiccant will significantly decrease, thus affecting the drying efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a dehumidifier and a ring network cabinet, which have good dehumidification effect, improved dehumidification efficiency, and can prevent condensation from forming inside the ring network cabinet.

[0005] In order to achieve the above-mentioned object, the present invention provides a dehumidifier in a first aspect, comprising: A housing having an air inlet, a first air outlet and a second air outlet, wherein an inner wall of the housing is provided with a first fan connected to the air inlet; a dehumidification assembly, arranged in the shell, the dehumidification assembly comprising a filter disc, a partition plate, a bracket, a motor, a transmission belt, a rotating shaft and a bearing seat, the partition plate is arranged at intervals on the front end surface of the filter disc, and divides the filter disc into a moisture absorption zone and a heating zone, the front end of the moisture absorption zone is connected to the air inlet through the first fan, the rear end of the moisture absorption zone is connected to the second air outlet, and the front end of the heating zone is connected to the first air outlet, the transmission belt is wound around the periphery of the filter disc and is transmission-connected to the motor, the motor is mounted on the bracket, the first end of the rotating shaft is coaxially connected to the filter disc, the filter disc is used to absorb moisture in the air, and the second end of the rotating shaft is mounted on the bracket through the bearing seat; and A heating component is arranged in the shell and located at the rear end surface of the filter disc. The heating component includes a second fan and a heater. The second fan is connected to the rear end of the heating zone through the heater. The heater is used to heat the filter disc so that the hot and humid air generated by the filter disc is discharged through the first air outlet.

[0006] In some embodiments, the filter disc includes an outer ring, a grille disposed in the outer ring, and a shaft sleeve disposed in the middle of the grille, the grille is filled with a desiccant, and the shaft sleeve is connected to the first end of the rotating shaft.

[0007] In some embodiments, a filter window is included, which is arranged at the air inlet and installed on the outer wall of the shell. The filter window includes a window frame, a filter screen and a limiting block. The window frame has a first frame and a second frame arranged relatively to each other, the first frame has a mounting hole and a limiting hole, the mounting hole passes through the first frame in a direction toward the second frame, the limiting hole is located at the front end of the mounting hole and is interconnected, the second frame has a limiting groove opening toward the first frame, the filter screen has a first edge and a second edge arranged relatively to each other, the filter screen is installed in the window frame, the first edge abuts against the limiting groove, the second edge abuts against the limiting block, and the rear end of the limiting block passes through the limiting hole and is arranged in the mounting hole.

[0008] In some embodiments, the bracket includes a front partition and a rear partition installed on the inner wall of the outer shell, the front partition and the rear partition are perpendicular to each other and are arranged longitudinally, the motor is installed on the front end surface of the front partition, the front partition has a through hole, the filter plate is correspondingly arranged on the front end surface of the through hole, the second end of the rotating shaft passes through the through hole, and is installed on the side wall of the rear partition through the bearing seat.

[0009] In some embodiments, the heating component includes a chassis, the second fan and the heater are installed in the chassis, the chassis has an air inlet grille and an air outlet grille, the air inlet grille is arranged opposite to the second fan, the air outlet grille is arranged opposite to the heater, and is correspondingly arranged at the rear end of the heating zone.

[0010] In some embodiments, it includes a first pipe, a second pipe and a third pipe, the front end of the hygroscopic zone is connected to the air inlet through the first pipe, the first fan is installed in the first pipe, the rear end of the hygroscopic zone is connected to the second air outlet through the second pipe, the front end of the heating zone is connected to the first air outlet through the third pipe, and the ends of the first pipe and the third pipe are installed on the side of the partition plate away from the filter plate.

[0011] In some embodiments, a third fan is included, and the third fan is installed in the second duct. The first fan, the second fan and the third fan are all axial flow fans.

[0012] In a second aspect, the present invention provides a ring main unit, comprising: Cabinets; and The dehumidifier provided in the first aspect is arranged in the cabinet, the first air outlet extends out of the cabinet, and the air inlet and the second air outlet are connected to the internal space of the cabinet.

[0013] In some embodiments, there are a secondary chamber, a dehumidification chamber, an air box, a mechanism chamber and a cable chamber, the secondary chamber and the dehumidification chamber are located in the upper part of the cabinet, the air box and the mechanism chamber are located in the middle part of the cabinet, the cable chamber is located in the lower part of the cabinet, and the dehumidifier is arranged in the dehumidification chamber.

[0014] In some embodiments, it includes a data transmission unit and a humidity sensor installed in a cabinet, wherein the first end of the data transmission unit is connected to the humidity sensor, the first fan, the motor, the second fan and the heater signal, and the second end of the data transmission unit is used to connect to the control end signal.

[0015] The present invention provides a dehumidifier and a ring network cabinet, which have the following beneficial effects compared with the prior art: By arranging the transmission belt to be wound around the outer circumference of the filter disc and connected to the motor, the motor is installed on the bracket, and the first end of the rotating shaft is coaxially connected to the filter disc, so that the motor can drive the filter disc to rotate around the rotating shaft. Since the filter disc is divided into a moisture absorption zone and a heating zone, the front end of the moisture absorption zone is connected to the air inlet through the first fan, and the rear end of the moisture absorption zone is connected to the second air outlet, so that air enters from the air inlet and is discharged from the second air outlet after being dried in the moisture absorption zone, and the front end of the heating zone is connected to the first outlet, and the second fan is connected to the rear end of the heating zone through the heater. The second fan blows the hot air generated by the heater to heat and dry the heating zone, thereby reducing the water content. Since the filter disc rotates around the rotating shaft, the entire filter disc can be heated and dried, and the water content of the filter disc is reduced. The dehumidification effect is good, the dehumidification efficiency is improved, and condensation can be prevented from forming inside the ring network cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a dehumidifier provided in some embodiments of the present invention.

[0017] Figure 2 A schematic three-dimensional structure diagram of a dehumidifier with a portion of its outer shell removed provided in some embodiments of the present invention.

[0018] Figure 3 for Figure 2 Schematic diagram of the left view structure.

[0019] Figure 4 for Figure 2 Schematic diagram of the right view structure.

[0020] Figure 5 A schematic diagram of an enlarged structure of the installation of a filter disc of a dehumidifier provided in some embodiments of the present invention.

[0021] Figure 6 A schematic diagram of the enlarged structure of the filter disc and the partition plate of the dehumidifier provided in some embodiments of the present invention.

[0022] Figure 7 A schematic diagram of the three-dimensional structure of a bracket of a dehumidifier provided in some embodiments of the present invention.

[0023] Figure 8 A schematic diagram of an exploded and enlarged structure of a filter window of a dehumidifier provided in some embodiments of the present invention.

[0024] Fig. 9 A schematic diagram of the front-end structure of a ring main unit provided in some other embodiments of the present invention.

[0025] In the figure: 1, housing; 11, air inlet; 12, first air outlet; 13, second air outlet; 14, first fan; 2, dehumidification component; 21, filter plate; 211, outer ring; 212, grille; 213, sleeve; 21a, moisture absorption area; 21b, heating area; 22, partition plate; 23, bracket; 231, front partition plate; 232, rear partition plate; 233, through hole; 24, motor; 25, transmission belt; 26, rotating shaft; 27, bearing seat; 3, heating Thermal component; 31. Second fan; 32. Heater; 33. Chassis; 4. Filter window; 41. Window frame; 42. Filter; 43. Limit block; 411. Mounting hole; 412. Limit hole; 413. Limit groove; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Third fan; 100. Dehumidifier; 200. Cabinet; 300. Secondary chamber; 400. Dehumidification chamber; 500. Gas box; 600. Mechanism room; 700. Cable room. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0027] It should be understood that, in the description of the present application, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0028] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0029] like Figure 1-Figure 8 As shown, the dehumidifier 100 provided in some embodiments of the present invention includes a housing 1, a dehumidification component 2 and a heating component 3. The dehumidification component 2 is used to remove water vapor in the air, and the heating component is used to heat the dehumidification component 2 to reduce the water content of the dehumidification component 2, thereby improving the dehumidification efficiency.

[0030] The housing 1 has an air inlet 11, a first air outlet 12 and a second air outlet 13. The inner wall of the housing 1 is provided with a first fan 14 connected to the air inlet 11. The air inlet 11 is connected to the inner space of the ring main unit, and air is drawn into the housing 1 through the first fan 14. The first air outlet 12 is used to discharge hot and humid air generated by heating the dehumidification component 2, and the second air outlet 13 is used to discharge dry air that has absorbed moisture through the dehumidification component 2.

[0031] The dehumidification component 2 is arranged in the shell 1, and the dehumidification component 2 includes a filter disc 21, a partition plate 22, a bracket 23, a motor 24, a transmission belt 25, a rotating shaft 26 and a bearing seat 27. The partition plate 22 is arranged at intervals on the front end surface of the filter disc 21. Specifically, at least one end of the partition plate 22 is installed on the inner wall of the shell 1. The partition plate 22 divides the filter disc 21 into a moisture absorption zone 21a and a heating zone 21b. The front end of the moisture absorption zone 21a is connected to the air inlet 11 through the first fan 14, the rear end of the moisture absorption zone 21a is connected to the second air outlet 13, and the front end of the heating zone 21b is connected to the first air outlet 12. The transmission belt 25 is wound around the outer periphery of the filter disc 21 and is transmission-connected to the motor 24. The motor 24 is installed on the bracket 23. The first end of the rotating shaft 26 is coaxially connected to the filter disc 21. The filter disc 21 is used to absorb moisture in the air. The second end of the rotating shaft 26 is installed on the bracket 23 through the bearing seat 27. In this way, when the motor 24 drives the filter disc 21 to rotate around the rotating shaft 26, the filter disc 21 can be continuously dried and dehumidified, and the air can be continuously absorbed and dried.

[0032] The heating assembly 3 is arranged in the housing 1 and is located at the rear end surface of the filter disc 21. The heating assembly 3 includes a second fan 31 and a heater 32. The second fan 31 is connected to the rear end of the heating area 21b through the heater 32. The heater 32 is used to heat the filter disc 21 so that the hot and humid air generated by the filter disc 21 is discharged through the first air outlet 12. In this way, the air blown by the second fan 31 is heated by the heater 32, and the hot and humid air generated heats the heating area 21b, and the hot and humid air generated is discharged to the external space through the first air outlet 12. Since the filter disc 21 can rotate continuously, the filter disc 21 is heated and dried as a whole.

[0033] Based on the above structural setting, the transmission belt 25 is wound around the outer periphery of the filter disc 21 and is connected to the motor 24. The motor 24 is installed on the bracket 23. The first end of the rotating shaft 26 is coaxially connected to the filter disc 21. The second end of the rotating shaft 26 is installed on the bracket 23 through the bearing seat 27, so that the motor 24 can drive the filter disc 21 to rotate around the rotating shaft 26. Since the filter disc 21 is divided into a moisture absorption zone 21a and a heating zone 21b, the front end of the moisture absorption zone 21a is connected to the air inlet 11 through the first fan 14, and the rear end of the moisture absorption zone 21a is connected to the second air outlet 13. The air enters from the air inlet 11 and is dried in the moisture absorption zone 21a and then discharged from the second air outlet 13. The front end of the heating zone 21b is connected to the first air outlet 12. The second fan 31 is connected to the rear end of the heating zone 21b through the heater 32. The second fan 31 blows the hot air generated by the heater 32 to heat and dry the heating zone 21b, thereby reducing the water content. Since the filter disc 21 rotates around the rotating shaft 26, the entire filter disc 21 can be heated and dried, reducing the water content of the filter disc 21, achieving a good dehumidification effect and improving the dehumidification efficiency.

[0034] like Figure 5 and 6 As shown, in some embodiments, the filter disc 21 includes an outer ring 211, a grille 212 disposed in the outer ring 211, and a sleeve 213 disposed in the middle of the grille 212. The grille 212 is filled with a desiccant, and the sleeve 213 is connected to the first end of the rotating shaft 26. Specifically, the outer ring 211, the grille 212 and the sleeve 213 are integrally formed and made of metal or engineering plastic. The grille 212 is honeycomb-shaped and absorbs moisture from the air by filling the desiccant. The surface of the outer ring 211 has an inwardly concave groove for mounting the transmission belt 25.

[0035] like Figure 8 As shown, in some embodiments, the dehumidifier 100 includes a filter window 4, which is arranged at the air inlet 11 and is installed on the outer wall of the shell 1. The filter window 4 includes a window frame 41, a filter screen 42 and a limiting block 43. The window frame 41 has a first frame and a second frame that are relatively arranged. The first frame has a mounting hole 411 and a limiting hole 412. The mounting hole 411 passes through the first frame in a direction toward the second frame. The limiting hole 412 is located at the front end of the mounting hole and is interconnected. The second frame has a limiting groove 413 with an opening toward the first frame. The filter screen 42 has a first side and a second side that are relatively arranged. The filter screen 42 is installed in the window frame 41, the first side abuts against the limiting groove 413, the second side abuts against the limiting block 43, and the rear end of the limiting block 43 passes through the limiting hole 412 and is arranged in the mounting hole 411. When disassembly and cleaning is required, the limiting block 43 is removed from the limiting hole 412, and the filter 42 can be pulled out for replacement or cleaning. After that, the second side of the filter 42 is inserted into the mounting hole 411 and finally abuts against the limiting groove 413. The rear end of the limiting block 43 is then passed through the limiting hole 412 and inserted into the mounting hole 411, so that the limiting block 43 abuts against the first side of the filter 42 to maintain the stability of the structure and achieve the effect of easy disassembly and maintenance.

[0036] like Figure 8 As shown, in some embodiments, the bracket 23 includes a front baffle 231 and a rear baffle 232 mounted on the inner wall of the housing 1, the front baffle 231 and the rear baffle 232 are perpendicular to each other and are arranged longitudinally, the motor 24 is mounted on the front end surface of the front baffle 231, the front baffle 231 has a through hole 233, the filter disc 21 is correspondingly arranged on the front end surface of the through hole 233, the second end of the rotating shaft 26 passes through the through hole 233, and is mounted on the side wall of the rear baffle 232 through the bearing seat 27. The structural arrangement of the front baffle 231 and the rear baffle 232 makes the installation structure of each component compact.

[0037] like Figure 2As shown, in some embodiments, the heating assembly 3 includes a chassis 33, the second fan 31 and the heater 32 are installed in the chassis 33, and the chassis 33 has an air inlet grille and an air outlet grille, the air inlet grille is arranged opposite to the second fan 31, and the air outlet grille is arranged opposite to the heater 32, and is correspondingly arranged at the rear end of the heating area 21b. In this way, the second fan 31 is started to allow air to enter from the air inlet grille of the chassis 33, blow toward the heater 32 to be heated to become hot air, and be discharged through the air outlet grille to heat the heating area 21b, and the formed hot and humid air is discharged from the first air outlet 12 to the external space.

[0038] like Figure 2 and 4 As shown, in some embodiments, the dehumidifier 100 includes a first pipe 5, a second pipe 6 and a third pipe 7, the front end of the moisture absorption zone 21a is connected to the air inlet 11 through the first pipe 5, the first fan 14 is installed in the first pipe 5, the rear end of the moisture absorption zone 21a is connected to the second air outlet 13 through the second pipe 6, the front end of the heating zone 21b is connected to the first air outlet 12 through the third pipe 7, and the ends of the first pipe 5 and the third pipe 7 are both installed on the side of the partition plate 22 away from the filter disc 21. Specifically, the first pipe 5, the second pipe 6 and the third pipe 7 use special-shaped air ducts to meet specific installation requirements, and there is a gap between them and the filter disc 21 so that the filter disc 21 rotates smoothly.

[0039] In some embodiments, the dehumidifier 100 includes a third fan 8, which is installed in the second duct 6, and the first fan 14, the second fan 31 and the third fan 8 are all axial flow fans, which have the advantages of simple structure and low noise.

[0040] like Fig. 9 As shown, some other embodiments of the present invention provide a ring main unit, including a cabinet 200 and a dehumidifier 100 provided in some embodiments. The dehumidifier 100 is arranged in the cabinet 200, the air inlet 11 extends out of the cabinet 200, and the first air outlet 12 and the second air outlet 13 are connected to the internal space of the cabinet 200. In this way, the dehumidifier 100 can blow the air in the cabinet 200 to the inside of the cabinet 200 after drying, and can prevent condensation from forming inside the ring main unit.

[0041] In other embodiments, the ring main unit has a secondary chamber 300, a dehumidification chamber 400, an air box 500, a mechanism chamber 600 and a cable chamber 700. The secondary chamber 300 and the dehumidification chamber 400 are located in the upper part of the cabinet 200, the air box 500 and the mechanism chamber 600 are located in the middle part of the cabinet 200, the cable chamber 700 is located in the lower part of the cabinet 200, and the dehumidifier 100 is arranged in the dehumidification chamber 400. Specifically, the chambers are connected with each other.

[0042] In other embodiments, the ring main unit includes a data transmission unit and a humidity sensor installed in the cabinet 200, a first end of the data transmission unit is connected to the humidity sensor, the first fan 14, the motor 24, the second fan 31 and the heater 32, and a second end of the data transmission unit is used to connect to the control end. The control end receives the data of the humidity sensor through the data transmission unit, generates a control signal after processing and analysis, and controls the first fan 14, the motor 24, the second fan 31 and the heater 32 through the data transmission unit.

[0043] Based on the structural setting of the ring main unit, the following effects are achieved: 1. By installing a dehumidifier 100 inside the dehumidification chamber 400 and starting the first fan 14, the first fan 14 draws the air in the cabinet 200 into the dehumidifier 100 through the first pipe 5, so that the secondary chamber 300 of the ring main cabinet becomes low pressure, and the air in the mechanism chamber 600, the cable chamber 700 and the air box 500 is transported to the secondary chamber 300, and then enters the dehumidifier 100 from the secondary chamber 300. The water vapor in the air enters the moisture absorption area 21a of the filter plate 21 through the first pipe 5 and The air absorbed by the dehumidifier and dried is discharged from the second air outlet 13 into the cabinet 200 through the second pipe 6 under the action of the third fan 8. The filter disc 21 rotates under the drive of the motor 24. When the filter disc 21 rotates from the moisture absorption area 21a to the heating area 21b, the heater 32 will increase the temperature by electric heating. Under high temperature, the moisture in the filter disc 21 evaporates to form hot and humid air, which is discharged from the first air outlet 12, so that the filter disc 21 always remains dry. At the same time, the moisture absorption area 21a of the filter disc 21 continues to dehumidify the air in the cabinet 200. Compared with the existing equipment, the dehumidifier 100 of the present application is not affected by the external environment, has a good dehumidification effect, improves the dehumidification efficiency, and can prevent condensation from forming inside the ring network cabinet.

[0044] 2. By setting the filter window 4, the filter net 42 inside the filter window 4 is a detachable connection structure. After long-term use, the filter net 42 can be disassembled and replaced more conveniently. Similarly, a filter structure can be set at the first air outlet 12. The filter structure can block external dust and debris and other pollution. After long-term use, the second filter net can be replaced and disassembled.

[0045] 3. By setting a data transmission unit and a humidity sensor inside the cabinet 200, the humidity sensor can detect the humidity inside the cabinet 200 in real time, and transmit the humidity to the data transmission unit in real time, and then transmit it to the control end through the data transmission unit. When the humidity of the cabinet 200 exceeds the predetermined threshold, the control end will control the first fan 14, the motor 24, the second fan 31 and the heater 32 to work to dehumidify the inside of the cabinet 200, so as to achieve the function of automatic dehumidification, effectively reduce labor costs, and compared with existing equipment, this device is equipped with an automatic start and stop function. After reaching the humidity setting value, this device automatically stands by. If the humidity becomes high, this device automatically starts, and so on, which is more energy-saving.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A dehumidifier, characterized in that: include: A housing having an air inlet, a first air outlet and a second air outlet, wherein an inner wall of the housing is provided with a first fan connected to the air inlet; A dehumidification component is arranged in the shell, and the dehumidification component includes a filter disc, a partition plate, a bracket, a motor, a transmission belt, a rotating shaft and a bearing seat. The partition plate is arranged at intervals on the front end surface of the filter disc, and divides the filter disc into a moisture absorption zone and a heating zone. The front end of the moisture absorption zone is connected to the air inlet through the first fan, the rear end of the moisture absorption zone is connected to the second air outlet, and the front end of the heating zone is connected to the first air outlet. The transmission belt is wound around the periphery of the filter disc and is connected to the motor in a transmission manner. The motor is installed on the bracket. The first end of the rotating shaft is coaxially connected to the filter disc. The filter disc is used to absorb moisture in the air. The second end of the rotating shaft is installed on the bracket through the bearing seat. as well as A heating component is arranged in the shell and located at the rear end surface of the filter disc. The heating component includes a second fan and a heater. The second fan is connected to the rear end of the heating zone through the heater. The heater is used to heat the filter disc so that the hot and humid air generated by the filter disc is discharged through the first air outlet.

2. The dehumidifier according to claim 1, characterized in that: The filter disc comprises an outer ring, a grille arranged in the outer ring and a shaft sleeve arranged in the middle of the grille, the grille is filled with a moisture absorbent, and the shaft sleeve is connected to the first end of the rotating shaft.

3. The dehumidifier according to claim 1, characterized in that: It includes a filter window, which is arranged at the air inlet and installed on the outer wall of the shell, the filter window includes a window frame, a filter screen and a limiting block, the window frame has a first frame and a second frame arranged relatively to each other, the first frame has a mounting hole and a limiting hole, the mounting hole passes through the first frame in a direction toward the second frame, the limiting hole is located at the front end of the mounting hole and is interconnected, the second frame has a limiting groove opening toward the first frame, the filter screen has a first edge and a second edge arranged relatively to each other, the filter screen is installed in the window frame, the first edge abuts against the limiting groove, the second edge abuts against the limiting block, and the rear end of the limiting block passes through the limiting hole and is arranged in the mounting hole.

4. The dehumidifier according to claim 1, characterized in that: The bracket includes a front partition and a rear partition installed on the inner wall of the shell, the front partition and the rear partition are perpendicular to each other and are arranged longitudinally, the motor is installed on the front end surface of the front partition, the front partition has a through hole, the filter plate is correspondingly arranged on the front end surface of the through hole, the second end of the rotating shaft passes through the through hole, and is installed on the side wall of the rear partition through the bearing seat.

5. The dehumidifier according to claim 1, characterized in that: The heating assembly includes a chassis, the second fan and the heater are installed in the chassis, the chassis has an air inlet grille and an air outlet grille, the air inlet grille is arranged opposite to the second fan, the air outlet grille is arranged opposite to the heater, and is correspondingly arranged at the rear end of the heating zone.

6. The dehumidifier according to claim 1, characterized in that: It includes a first pipe, a second pipe and a third pipe, the front end of the moisture absorption zone is connected to the air inlet through the first pipe, the first fan is installed in the first pipe, the rear end of the moisture absorption zone is connected to the second air outlet through the second pipe, the front end of the heating zone is connected to the first air outlet through the third pipe, and the ends of the first pipe and the third pipe are both installed on the side of the partition plate away from the filter plate.

7. The dehumidifier according to claim 6, characterized in that: It includes a third fan, which is installed in the second duct, and the first fan, the second fan and the third fan are all axial flow fans.

8. A ring main unit, characterized in that: include: Cabinet; and The dehumidifier according to any one of claims 1 to 7, wherein the dehumidifier is disposed in the cabinet, the first air outlet extends out of the cabinet, and the air inlet and the second air outlet are connected to the internal space of the cabinet.

9. The ring main unit according to claim 8, characterized in that: It has a secondary chamber, a dehumidification chamber, an air box, a mechanism chamber and a cable chamber. The secondary chamber and the dehumidification chamber are located at the upper part of the cabinet, the air box and the mechanism chamber are located in the middle part of the cabinet, the cable chamber is located at the lower part of the cabinet, and the dehumidifier is arranged in the dehumidification chamber.

10. The ring main unit according to claim 8, characterized in that: It includes a data transmission unit and a humidity sensor installed in the cabinet, the first end of the data transmission unit is connected to the humidity sensor, the first fan, the motor, the second fan and the heater signal, and the second end of the data transmission unit is used for connecting to the control end signal.

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