Intelligent monitoring electric energy metering box

Abstract

The present application relates to the technical field of metering box, in particular to a kind of electric energy metering box of intelligent monitoring, the present application includes metering box body and the dehumidification pedestal of being arranged at its bottom, the humidity sensor is arranged in the metering box body inside;The dehumidification pedestal is divided into upper and lower two layers operation area.This application uses the structure form of condensing plate surface vibration, impurity interception, mechanical automatic decontamination and pressurized drainage mutual cooperation, all-around processing solid impurities generated in the process of dehumidification.Rely on vibration structure to shake off the dust and attached water film on the surface of condensing plate, continuously guarantee the heat transfer capacity of condensing plate, reduce the impurities flowing with water flow;Impurities in water flow are intercepted by filter screen, then continuously pushed and collected by decontamination auger, then drainage position is dredged by means of pulse pressurized water flow, to prevent the accumulation of debris from blocking the drainage passage.Overcome the defects that traditional condensing dehumidification equipment is easy to accumulate water and drainage is not smooth, avoid the accumulated water in the box to evaporate again to cause the humidity in the box.

Description

Technical Field

[0001] This invention relates to the field of metering box technology, specifically to an intelligent monitoring electricity metering box. Background Technology

[0002] With the continuous advancement of the smart grid industry, Internet of Things (IoT) technology is gradually penetrating the end of power distribution. Smart sensors are widely used in the status monitoring of power metering boxes. Outdoor power metering boxes have been upgraded from single metering devices to intelligent terminals integrating metering, monitoring, and data transmission. The various power electronic components integrated inside these boxes have higher requirements for the stability of the operating environment. At the same time, green energy conservation has become one of the core development directions for power distribution equipment. Low-energy-consumption, long-life, and maintenance-free terminal devices are an important foundation for reducing costs and increasing efficiency in smart grids and achieving green operation and maintenance.

[0003] Outdoor metering boxes are susceptible to environmental factors such as diurnal temperature variations and rainy weather, causing the air inside to easily reach saturation and condensation. Prolonged high humidity can accelerate the aging of the insulation of power electronic components and even lead to faults such as creepage and short circuits. Therefore, a dehumidification device is needed inside the box to control internal humidity. Currently, metering boxes generally use a condensation dehumidification solution. This involves using cooling components to maintain a low temperature on the condenser plate. Moist air flowing over the plate condenses upon contact with the cold surface, and the condensate is collected and discharged outside the box through a drain outlet, thereby reducing the humidity inside the box.

[0004] However, in practical applications, the airflow circulating inside the chamber not only carries water vapor but also various solid impurities such as dust, fibrous material, and insect carcasses. When these impurities come into contact with the surface of the condenser plate, they adhere and mix with the condensation film on the plate surface. On the one hand, they accumulate on the surface of the condenser plate to form a dirt layer, increasing the heat exchange resistance and causing the condensation and dehumidification efficiency to continuously decrease with the increase of operating time. On the other hand, when the condensate mixed with solid impurities collects along the plate surface to the drainage channel, the impurities are very easy to deposit and accumulate at the drainage outlet, causing the drainage channel to be blocked. This prevents the condensate from being discharged from the chamber normally, and it may even remain inside the chamber and evaporate back, further aggravating the humidity inside the chamber and affecting the operational reliability and service life of the power electronic components. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent monitoring power metering box to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: A smart monitoring electricity metering box, preferably, includes a metering box body and a dehumidifying base disposed at its bottom, wherein a humidity sensor is disposed inside the metering box body; The dehumidification base is divided into upper and lower operating areas. The upper operating area is symmetrically equipped with condensation chambers, and an equipment installation chamber is provided between the two condensation chambers. Air inlets connecting to the condensation chambers are opened on both sides of the dehumidification base, and air outlets connecting to the metering box body are symmetrically opened on the top. A cooling fan is installed in the air outlet. The condensation chamber is equipped with multiple vertically arranged condensation plates. An arc-shaped water collection trough is provided at the bottom of the condensation chamber. A positive pressure drainage mechanism is provided in the lower operating area. The water inlet of the positive pressure drainage mechanism is connected to the arc-shaped water collection trough through a water guide, and the water outlet extends to the outside of the dehumidification base. The equipment installation cavity is equipped with a vertically arranged main shaft, which extends downward into the lower operating area and is connected to the positive pressure drainage mechanism. The arc-shaped water collection tank is equipped with a rotatable auger for sewage discharge, and the water guide is equipped with an arc-shaped intercepting net. The main shaft is connected to the sewage auger for transmission. The end of the condenser plate is connected to a vibration triggering mechanism, and the main shaft is connected to the vibration triggering mechanism to drive the condenser plate to generate micro-vibration.

[0007] Preferably, the positive pressure drainage mechanism includes symmetrically arranged three-way pipes, the top of the vertical pipe of the three-way pipe is connected to the water inlet, one-way valves are symmetrically arranged inside the vertical pipe, and the drain outlet at the bottom of the vertical pipe extends to the outside of the dehumidification base. A piston rod is slidably installed inside the horizontal tube of the three-way pipe, and the piston rod is connected to the main shaft for transmission.

[0008] Preferably, a reciprocating transmission assembly is provided between the main shaft and the piston rod. The reciprocating transmission assembly includes a reciprocating drive disk and an eccentric shaft. The reciprocating drive disk is coaxially fixed to the bottom of the main shaft, and the eccentric shaft is eccentrically fixed to the bottom end face of the reciprocating drive disk. Reciprocating connecting rods are symmetrically hinged at both ends of the eccentric shaft, and the other end of the reciprocating connecting rod is hinged to the end of the piston rod on the corresponding side.

[0009] Preferably, rectangular sewage guide rails are symmetrically arranged inside the lower operating area, and a sewage box with a top opening is slidably arranged inside the sewage guide rails; The bottom of the arc-shaped water collection tank is provided with a sewage outlet, which extends to the inner top of the sewage guide rail. The sewage auger is used to push the impurities intercepted by the arc-shaped interception net to the sewage outlet, where they fall into the sewage tank for collection.

[0010] Preferably, a bevel gear transmission assembly is provided between the main shaft and the sewage auger. The bevel gear transmission assembly includes a first bevel gear and a second bevel gear. The first bevel gear is coaxially fixed to the middle section of the main shaft, and the second bevel gear is fixed to the shaft end of the sewage auger. The first bevel gear and the second bevel gear mesh with each other.

[0011] Preferably, a cam triggering assembly is provided between the main shaft and the vibration triggering mechanism. The cam triggering assembly includes a trigger disk and a triggering protrusion. The trigger disk is coaxially fixed to the middle section of the main shaft, and the triggering protrusion is symmetrically fixed to the end face of the trigger disk.

[0012] Preferably, two partition plates are symmetrically arranged inside the condensation cavity to symmetrically isolate two drying cavities within the condensation cavity; The vibration triggering mechanism includes a first transmission rod, a vibration ring, and a reset spring. The first transmission rod is slidably disposed axially between the equipment mounting cavity and the drying cavity. A trigger guide rod that abuts against the triggering protrusion is fixedly connected to the middle section of the first transmission rod, and reset abutment blocks are fixedly connected to both ends. The vibration rings are uniformly fixed to the first transmission rod, corresponding one-to-one with the condensing plates. The reset springs are symmetrically sleeved on the outer periphery of the first transmission rod, located between the reset contact block and the outermost condensing plate.

[0013] Preferably, the condensation chamber is further provided with multiple vertically movable adjustment plates, which are arranged alternately with the condensation plates; The main shaft is connected to the adjustment plate via a gear and rack transmission assembly, driving the adjustment plate to insert into or disengage from the gap between adjacent condensing plates, thereby switching the air duct configuration within the condensing chamber. The gear and rack transmission assembly includes a driving gear, a driven rack, and an L-shaped transmission rod. The driving gear is coaxially fixed to the middle section of the main shaft. Guide rods are symmetrically fixed inside the equipment mounting cavity. The L-shaped transmission rod is fixed to the ends of two adjacent guide rods. The driven rack is fixed to the long end of the L-shaped transmission rod. The driving gear and the driven rack mesh and transmit power.

[0014] Preferably, the long end of the L-shaped transmission rod is provided with a follower groove, a follower tooth is slidably arranged inside the follower groove, and a follower spring is symmetrically arranged between the end of the follower tooth and the inner wall of the follower groove; After the adjusting plate moves to the set position, the driving gear disengages from the driven rack and engages with the follower gear. The extension and retraction of the follower spring compensates for the continuous rotation of the main shaft, keeping the adjusting plate in a fixed position. A second transmission rod is fixedly connected to the top of the L-shaped transmission rod, and the second transmission rod extends axially into the interior of the drying chamber. An adjusting slider is fixedly connected to the end of the adjusting plate. A vertical adjusting groove adapted to the adjusting slider is provided on the partition plate. The end of the adjusting slider extends to the drying chamber and is fixedly connected to an oblique guide rail. A traction slide rod adapted to the oblique guide rail is fixedly connected to the second transmission rod.

[0015] Preferably, a reducer is fixedly connected inside the equipment mounting cavity, the input end of the reducer is fixedly connected to a power motor, and the output end of the reducer is fixedly connected to the main shaft; A semiconductor cooler is fixedly connected to the outside of the dehumidification base. The hot end of the semiconductor cooler faces the outside of the dehumidification base, and the cold end extends into the drying chamber. The end of the condenser plate is fixedly connected to the cold end of the semiconductor cooler.

[0016] The beneficial effects of this invention are: 1. This invention employs a structural design that integrates condenser plate vibration, impurity interception, automatic mechanical cleaning, and pressurized drainage to comprehensively address solid debris generated during the dehumidification process. The vibration structure removes accumulated dust and water film from the condenser plate surface, ensuring continuous heat exchange capacity and reducing impurities carried by the water flow. Impurities in the water flow are intercepted by a filter and continuously pushed and collected by a drain auger. Pulsed pressurized water flow then clears the drainage channels, preventing debris buildup and blockage. This overcomes the shortcomings of traditional condensation dehumidification equipment, such as water accumulation and poor drainage, preventing water from remaining inside the box and evaporating again, thus maintaining a stable dry environment inside the power metering box and protecting the reliable operation of the internal power electronic components.

[0017] 2. In this invention, the entire dehumidification mechanism relies on a single main shaft to uniformly drive the drainage, cleaning, vibration plate, and air duct adjustment components. Combined with a flexible follow-up structure, it eliminates the need for additional clutch components and independent drive motors. The mechanical structure is simple and compact, adaptable to the limited installation space inside an energy metering box. The equipment can switch the air duct configuration according to the humidity inside the box. In high humidity environments, it forms a bent air duct to extend the time air contacts the condenser plate, improving dehumidification capacity. Under normal humidity conditions, it switches to a straight ventilation duct to reduce airflow resistance, ensuring air circulation and heat dissipation inside the box. This balances dehumidification and component ventilation requirements, adapting to varying outdoor humidity environments.

[0018] 3. This invention collects all filtered solid impurities in a pull-out drain box, eliminating the need for daily maintenance by removing the dehumidification module and cleaning only the drain box. This significantly reduces the workload of maintaining outdoor metering equipment. The device uses a mechanical linkage structure as its core actuator, automatically starting and stopping with humidity detection. It operates stably and reliably, allowing for long-term unattended use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the metering box body in this invention; Figure 3This is a schematic diagram of the top structure of the dehumidification base in this invention; Figure 4 This is a schematic diagram of the internal structure of the dehumidification base in this invention; Figure 5 This is a schematic diagram of the internal structure of the tee pipe in this invention; Figure 6 This is a schematic diagram of the overall structure of the second transmission rod in this invention; Figure 7 This is a schematic diagram of the overall structure of the spindle in this invention; Figure 8 This is a schematic diagram of the overall structure of the first transmission rod in this invention; Figure 9 This is a schematic diagram of the internal structure of the follower slide in this invention; Figure 10 This is an exploded view of the internal structure of the oblique guide rail in this invention; Figure 11 This is an exploded view of the internal structure of the adjusting groove in this invention.

[0020] The attached diagram is labeled as follows: 1. Metering box body; 2. Dehumidifier base; 3. Condensation chamber; 4. Equipment mounting cavity; 5. Air inlet; 6. Air outlet; 7. Cooling fan; 8. Condensation plate; 9. Arc-shaped water collection trough; 10. Water guide port; 11. Main shaft; 12. Sewage auger; 13. Arc-shaped interception net; 14. T-connector; 15. One-way valve; 16. Drain outlet; 17. Piston rod; 18. Reciprocating drive disc; 19. Eccentric shaft; 20. Reciprocating connecting rod; 21. Rectangular sewage guide rail; 22. Sewage tank; 23. Sewage outlet; 24. First bevel gear; 25. Second bevel gear. 26. Wheel; 27. Trigger disc; 28. Trigger protrusion; 29. ​​Partition plate; 30. First transmission rod; 31. Vibration ring; 32. Return spring; 33. Trigger guide rod; 34. Return contact block; 35. Adjusting plate; 36. Drive gear; 37. Driven rack; 38. L-shaped transmission rod; 39. Guide rod; 40. Follower slide; 41. Follower gear; 42. Follower spring; 43. Second transmission rod; 44. Adjusting slider; 45. Adjusting slide; 46. Inclined guide slide; 47. Traction slide; 48. Reducer; 49. Power motor; 40. Semiconductor refrigerator. Detailed Implementation

[0021] 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.

[0022] With the continuous advancement of smart grid construction, IoT technology and smart sensors are deeply integrated into the power distribution terminal operation and maintenance system. Green energy saving, high reliability, and low maintenance have become the core development directions for outdoor power distribution terminal equipment. As a basic metering node in the power distribution network, the power metering box relies on smart sensors to realize real-time perception of the internal environmental status. It also integrates various power electronic components. The internal humidity environment and the long-term operational stability of the dehumidification device are directly related to the metering accuracy and power supply safety. Therefore, higher requirements are placed on the dehumidification system's anti-clogging capability, heat exchange long-term effectiveness, ease of operation and maintenance, and energy consumption.

[0023] Existing condensation dehumidification devices used in metering boxes mostly adopt a structure of gravity-fed drainage combined with a simple filter screen. Dust, lint, and other impurities easily clog the filter screen and accumulate in the drain outlet after entering with the airflow. Furthermore, the dust and water film on the surface of the condenser plate continuously increase the heat exchange resistance, which not only causes the dehumidification efficiency to decline rapidly over time, but also leads to a continuous increase in cooling energy consumption, failing to meet the requirements of green and energy-saving operation. Some improved solutions require independent drive components for drainage, dust removal, and air duct adjustment, resulting in a complex overall transmission chain, high failure rate, and high maintenance costs, making it difficult to adapt to the development model of unattended and remote operation and maintenance of outdoor metering stations under the Internet of Things technology.

[0024] To address the aforementioned issues, this solution adopts a single-spindle collaborative linkage design concept. It relies on humidity detection signals from in-cabin intelligent sensors to trigger operation, utilizing the rotational output of a single power source to synchronously drive the positive pressure drainage mechanism, sewage auger, condenser plate vibration mechanism, and air duct adjustment mechanism. Through purely mechanical linkage, it achieves active pressurized drainage, automatic impurity collection, plate surface cleaning and decondensation, and adaptive switching of the dehumidification air duct. The entire structure requires no additional independent drive components, thus avoiding increased control chain complexity. While resolving drainage blockage issues across the entire chain, it maintains long-term condensation heat exchange efficiency, effectively reducing energy consumption and ensuring better operational stability of the power electronic components and intelligent sensors within the cabinet. This aligns with the green, energy-saving, low-maintenance, and highly reliable operation requirements of terminal equipment in the smart grid industry and IoT technology.

[0025] A smart monitoring electricity metering box, such as Figures 1-11 As shown, the system includes a metering chamber body 1 and a dehumidifying base 2 fixedly installed at the bottom of the metering chamber body 1. A humidity sensor is installed in the air circulation position inside the metering chamber body 1. The humidity sensor is used to detect the relative humidity of the air inside the chamber in real time and transmits the detection signal to the control unit as the trigger for starting and stopping the dehumidification system and switching the operating mode.

[0026] The interior of the dehumidification base 2 is divided into two independent operating areas by a horizontal partition. The upper operating area is symmetrically divided into two sets of condensation chambers 3 by vertical partitions. The central area between the two sets of condensation chambers 3 is the equipment mounting cavity 4, used for the centralized installation of power and transmission components. Air inlets 5 are provided on both the left and right side walls of the dehumidification base 2, communicating with the interior of the corresponding condensation chamber 3. Humid air from the metering chamber body 1 can enter the condensation chamber 3 through the air inlets 5 to complete dehumidification. Air outlets 6 are provided on the top of the dehumidification base 2 corresponding to the two sets of condensation chambers 3, communicating upwards with the internal cavity of the metering chamber body 1. Each air outlet 6 is equipped with a cooling fan 7, which drives the air inside the chamber to form a circulating airflow, ensuring that humid air continuously flows over the condensation surface.

[0027] Each condensing chamber 3 contains multiple vertically parallel condensing plates 8, whose surfaces provide a low-temperature contact surface for water vapor condensation. The bottom of the condensing chamber 3 has an integrally formed arc-shaped water collection groove 9. The arc design allows water droplets falling from the condensing plates 8 to automatically converge towards the drainage position in the middle along the bottom of the groove, avoiding dead corners where water accumulates in the groove.

[0028] Two partition plates 28 are symmetrically fixed on the inner walls of the front and rear ends of the condensing chamber 3. The two partition plates 28 divide the condensing chamber 3 into a middle condensing and dehumidifying zone and two drying chambers at both ends. The end of the condensing plate 8 extends through the partition plate 28 into the drying chamber.

[0029] Semiconductor coolers 49 are fixed on the front and rear outer walls of the dehumidification base 2, corresponding to the positions of the drying chamber. The hot end of the semiconductor cooler 49 faces the atmospheric environment outside the base, and the heat generated during operation is directly dissipated into the outside air, without entering the metering chamber and causing the chamber temperature to rise. The cold end of the semiconductor cooler 49 extends into the drying chamber and is tightly fitted with the end face of the condenser plate 8, ensuring that the cooling capacity can be evenly conducted to the entire surface of the condenser plate 8 through the metal plate, providing a continuous and stable low-temperature cold source for condensation dehumidification.

[0030] Positive pressure drainage mechanisms are symmetrically arranged at the positions corresponding to the two sets of condensation chambers 3 in the lower operating area. Each set of positive pressure drainage mechanisms includes a T-shaped pipe 14, which consists of a horizontal pipe section and a vertical pipe section connected to each other. The top opening of the vertical pipe of the T-shaped pipe 14 is connected to the lowest point of the upper arc-shaped water collection tank 9 through the water guide port 10. A one-way valve 15 is installed at two positions inside the vertical pipe; the one-way valve 15 located at the top allows water to flow unidirectionally from the arc-shaped water collection tank 9 into the pump chamber, while the one-way valve 15 located at the bottom allows water to flow unidirectionally from the pump chamber to the bottom drain port 16. The two one-way valves 15 work together with the piston movement to achieve unidirectional circulation of water intake and drainage. The bottom of the vertical pipe of the T-shaped pipe 14 is the drain port 16, which extends downward through the bottom wall of the dehumidification base 2 to the outside of the base, and the condensate is finally discharged outside the box through this point.

[0031] The piston rod 17 is sealed and slidably mounted inside the horizontal pipe of the three-way pipe 14. The rod of the piston rod 17 can slide back and forth along the axial direction of the horizontal pipe to change the volume of the pump chamber inside the horizontal pipe. It works with two one-way valves 15 to complete the cycle of water intake, pressurization and drainage.

[0032] Inside the arc-shaped water collection tank 9, a drain auger 12 is rotatably installed along the length of the tank. The spiral blades of the drain auger 12 are arranged close to the bottom of the tank, and when rotated, they can push the solid impurities deposited at the bottom of the tank to move axially. Inside the water guide 10, an arc-shaped intercepting net 13 is fixed. The mesh surface of the arc-shaped intercepting net 13 can filter solid impurities such as dust, flocculent matter, and insect carcasses carried in the condensate water, preventing debris from entering the drainage pipe and causing blockage.

[0033] In the lower operating area, a rectangular drain guide rail 21 is fixed at the position corresponding to each group of condensing chambers 3. The drain guide rail 21 is arranged along the front and back direction of the dehumidification base 2. A drain box 22 with a top opening is slidably inserted into the guide rail. The drain box 22 can be pulled out along the drain guide rail 21 for easy cleaning of the debris collected inside. The bottom of the arc-shaped water collection tank 9 has a drain port 23 located downstream of the arc-shaped intercepting net 13 and at the end of the drain auger 12. The drain port 23 extends downward to the inner top of the drain guide rail 21, and the opening is directly opposite the opening of the drain box 22 below. The impurities intercepted by the arc-shaped intercepting net 13 are pushed to the drain port 23 by the drain auger 12 and can fall into the drain box 22 for centralized storage under the action of gravity.

[0034] A reducer 47 is fixedly installed inside the equipment mounting cavity 4. The input end of the reducer 47 is fixedly connected to the output shaft of the power motor 48, and the output end of the reducer 47 faces downward and is coaxially fixed to the top of the vertically arranged main shaft 11. The high-speed rotational power output by the power motor 48 is reduced and amplified by the reducer 47 and then transmitted to the main shaft 11. The main shaft 11 is arranged vertically along the center of the equipment mounting cavity 4, extends downward and penetrates into the lower operating area, and is connected to multiple sets of transmission mechanisms to realize the synchronous operation of multiple mechanisms driven by a single power source.

[0035] A reciprocating transmission assembly is provided between the bottom end of the main shaft 11 and the piston rods 17 on both sides to convert the rotational motion of the main shaft 11 into the linear reciprocating motion of the piston rods 17. The reciprocating transmission assembly includes a reciprocating drive disk 18 and an eccentric shaft 19. The reciprocating drive disk 18 is coaxially fixed to the lower end face of the main shaft 11 and rotates synchronously with the main shaft 11. The eccentric shaft 19 is vertically fixed to the lower end face of the reciprocating drive disk 18, and the axis of the eccentric shaft 19 is offset from the axis of the main shaft 11, forming an eccentric rotary structure. A reciprocating connecting rod 20 is hinged to each end of the eccentric shaft 19. The two reciprocating connecting rods 20 are symmetrically arranged along the eccentric shaft 19, and the other end of each reciprocating connecting rod 20 is hinged to the outer end of the corresponding side piston rod 17, forming a crank-slider transmission structure. When the main shaft 11 rotates, the piston rods 17 on both sides are driven to perform synchronous reverse axial reciprocating motion through the transmission of the eccentric shaft 19 and the reciprocating connecting rods 20.

[0036] A first bevel gear 24 is coaxially fixed on the middle section of the main shaft 11, and a second bevel gear 25 is fixed on the end of the rotating shaft of the sewage auger 12 near the equipment mounting cavity 4. The tooth surfaces of the first bevel gear 24 and the second bevel gear 25 mesh with each other to form a bevel gear transmission pair. This transmission pair can change the direction of power transmission, converting the vertical rotational motion of the main shaft 11 into the horizontal rotational motion of the sewage auger 12, so as to realize the synchronous linkage of drainage action and sewage discharge action.

[0037] A vibration triggering mechanism is provided between the end of the condenser plate 8 and the main shaft 11. The main shaft 11 drives the vibration triggering mechanism to move intermittently through the cam triggering assembly, thereby causing the condenser plate 8 to generate micro-vibrations.

[0038] The cam trigger assembly includes a trigger disk 26 and trigger protrusions 27. The trigger disk 26 is coaxially fixed on the middle section of the main shaft 11 and located above the first bevel gear 24. Two protruding trigger protrusions 27 are symmetrically fixed on the upper surface of the trigger disk 26 along the circumferential direction. The trigger protrusions 27 move in a circular motion synchronously with the trigger disk 26.

[0039] The vibration triggering mechanism includes a first transmission rod 29, a vibration ring 30, and a return spring 31. The first transmission rod 29 is arranged laterally, with its two ends slidingly passing through the side walls of the equipment mounting cavity 4 and the two drying cavities on both sides, and can slide back and forth along its own axial direction. A trigger guide rod 32 is vertically fixed on the middle section of the first transmission rod 29, and the lower end of the trigger guide rod 32 extends downward to above the trigger disc 26, and its position corresponds to the rotation path of the trigger protrusion 27. When the trigger protrusion 27 rotates with the main shaft 11 to the position of the trigger guide rod 32, it can push the trigger guide rod 32 to drive the first transmission rod 29 to move laterally as a whole. Both ends of the first transmission rod 29 are fixed with a return contact block 33, and a vibration ring 30 is fixed on the rod body of the first transmission rod 29 corresponding to the position of each condenser plate 8. Two return springs 31 are symmetrically sleeved on the outer periphery of the first transmission rod 29. The return springs 31 abut against the return contact block 33 and the inner wall of the drying cavity, and always provide the first transmission rod 29 with a return force.

[0040] The condensing chamber 3 is also equipped with multiple vertically adjustable plates 34, which are arranged in parallel and staggered with the condensing plates 8. When the adjustable plates 34 are inserted downward into the gap between two adjacent condensing plates 8, the air duct path inside the chamber can be changed. When they are retracted upward to disengage from the gap, the air duct returns to a straight state. The main shaft 11 drives the adjustable plates 34 to complete the lifting and lowering action through a gear and rack transmission assembly.

[0041] The gear and rack transmission assembly includes a driving gear 35, a driven rack 36, and an L-shaped transmission rod 37. The driving gear 35 is coaxially fixed on the middle section of the main shaft 11, located above the trigger disc 26. Two horizontally arranged guide rods 38 are symmetrically fixed inside the equipment mounting cavity 4, and the guide rods 38 are parallel to the first transmission rod 29. The L-shaped transmission rod 37 is formed by integrally bending a horizontal section and a vertical section. Its horizontal section slides on the two guide rods 38 and can move laterally along the guide rods 38. The driven rack 36 is fixed on the inner wall of the horizontal section of the L-shaped transmission rod 37, with its teeth facing the driving gear 35, and can mesh with the driving gear 35 for transmission.

[0042] A follower groove 39 extending along the length direction is provided on the transverse section of the L-shaped transmission rod 37. A follower tooth 40 is slidably assembled in the follower groove 39. The tooth shape of the follower tooth 40 is consistent with the tooth shape of the driven rack 36. Two follower springs 41 are symmetrically connected between the end of the follower tooth 40 and the inner wall of the follower groove 39. The follower springs 41 are arranged along the length direction of the follower groove 39. In the natural state, they push the follower tooth 40 against the end of the follower groove 39 away from the driven rack 36.

[0043] The upper end of the vertical section of the L-shaped transmission rod 37 is fixedly connected to a second transmission rod 42, which extends laterally into the drying chamber on the same side. Each adjusting plate 34 has an adjusting slider 43 fixed to its end. A vertical adjusting groove 44 is provided on the partition plate 28 corresponding to the position of each adjusting slider 43. The adjusting slider 43 is embedded in the adjusting groove 44 and can slide vertically along it. The inner end of the adjusting slider 43 extends into the drying chamber and is fixed with an inclined guide rail 45. The groove of the guide rail is arranged at an angle. A traction rod 46 is fixed on the body of the second transmission rod 42 corresponding to the position of each inclined guide rail 45. The traction rod 46 is embedded in the groove of the corresponding inclined guide rail 45 and can slide along the groove wall. When the second transmission rod 42 moves laterally, the traction rod 46, in cooperation with the inclined guide rail 45, converts the lateral displacement into the vertical displacement of the adjusting slider 43, thereby driving the adjusting plate 34 to complete the lifting and lowering action.

[0044] When in use, if the humidity inside the chamber is within the safe threshold, the control unit controls the power motor 48 to be in a stopped state, and the spindle 11 remains stationary.

[0045] At this time, the regulating plate 34 is at its highest position, completely separated from the gap between the adjacent condensing plates 8, and the air duct in the condensing chamber 3 is in a straight state with minimal air resistance; the cooling fan 7 keeps running at low speed, drawing air from the metering box body 1 into the condensing chamber 3 through the air inlet 5. The air flows quickly along the straight ventilation duct over the surface of the condensing plate 8, and after basic heat exchange, it flows back into the box from the top air outlet 6, continuously driving the air flow in the box and ensuring good heat dissipation of electrical components.

[0046] Meanwhile, the semiconductor cooler 49 maintains low power operation and keeps the basic low temperature through the condenser plate 8, so that the air flowing through the plate surface can be slightly dehumidified, thus preventing the humidity inside the box from slowly increasing; there is only a small amount of condensed water in the arc-shaped water collection tank 9, and the drain outlet 16 relies on the water in the pipe to form a natural water seal, which prevents external moisture, mosquitoes, and dust from flowing back into the box through the drainage path.

[0047] When the humidity sensor detects that the relative humidity inside the chamber has reached the preset dehumidification trigger threshold, the control unit starts the power motor 48 to run in the forward direction. The power is reduced and increased in torque by the reducer 47 and then transmitted to the main shaft 11. The main shaft 11 drives the reciprocating drive disk 18 at the bottom to rotate synchronously, which drives the eccentric shaft 19 to make a circular motion. Through the two reciprocating connecting rods 20, the piston rods 17 on both sides are pulled to slide axially back and forth along the inner wall of the horizontal tube of the three-way pipe 14. When the piston rod 17 slides away from the vertical tube, the volume of the pump chamber inside the horizontal tube increases and a negative pressure is formed. The one-way valve 15 on the upper side opens and the one-way valve 15 on the lower side closes. The condensate in the arc-shaped water collection tank 9 is sucked into the pump chamber through the water guide port 10. When the piston rod 17 slides closer to the vertical tube, the volume of the pump chamber decreases and the internal water pressure increases. The one-way valve 15 on the upper side closes and the one-way valve 15 on the lower side opens. The condensate in the pump chamber is pressurized and quickly rushes to the bottom drain port 16 and is discharged to the outside of the base.

[0048] The piston rod 17 continuously reciprocates, forming a pulse-like positive pressure drainage. The drainage flow rate is much higher than that of traditional gravity flow, and the impact force of the water flow can directly break open soft blockages such as cotton wool and dust attached to the drain outlet 16.

[0049] Furthermore, as the main shaft 11 rotates, the power direction is changed through the meshing transmission of the first bevel gear 24 and the second bevel gear 25, causing the sewage auger 12 to rotate at a low speed around its own transverse axis. Solid impurities such as dust, insect carcasses, and plastic fragments carried by the condensate flow into the inlet 10 are intercepted by the internal arc-shaped interceptor net 13 on one side of the arc-shaped water collection tank 9. The spiral blades of the sewage auger 12 continue to rotate, gradually pushing the impurities deposited at the bottom of the tank axially to the sewage outlet 23. Under the action of gravity, the impurities fall through the sewage outlet 23 into the sewage box 22 installed below along the rectangular sewage guide rail 21 for centralized storage. Maintenance personnel only need to periodically remove the sewage box 22 to empty the debris.

[0050] Simultaneously, the main shaft 11 drives the trigger disk 26 to rotate synchronously, and the trigger protrusion 27 on the disk intermittently impacts and pushes the trigger guide rod 32; when the trigger protrusion 27 rotates to the position of the trigger guide rod 32, the inclined surface of the protrusion pushes the trigger guide rod 32 to move laterally to one side, driving the first transmission rod 29 to move laterally synchronously, and the return spring 31 on this side is compressed and stores energy; when the trigger protrusion 27 disengages from the trigger guide rod 32 with rotation, the elastic force of the return spring 31 is released instantaneously, pushing the first transmission rod 29 to quickly rebound and reset, and the various vibration rings 30 on the rod body strike the end of the corresponding condenser plate 8, causing the entire condenser plate 8 to generate high-frequency micro-amplitude vibration.

[0051] This facilitates the breaking up and shaking off of water film and dust accumulated on the surface of the condenser plate 8, accelerating the dripping of condensate into the bottom arc-shaped water collection tank 9, and preventing the water film from forming an insulation layer on the plate surface and reducing the condensation heat exchange efficiency.

[0052] Furthermore, when the main shaft 11 drives the driving gear 35 to rotate in the forward direction, the driving gear 35 first meshes with the driven rack 36, driving the L-shaped transmission rod 37 to move laterally along the guide rod 38 to the side of the condensing chamber 3; the second transmission rod 42 at the top of the L-shaped transmission rod 37 moves laterally in sync, and the traction slide rod 46 on the rod slides along the groove of the inclined guide slide rail 45. Through the guiding effect of the inclined surface, the lateral displacement is converted into the vertical downward displacement of the adjusting slider 43, driving all the adjusting plates 34 to move downward in sync and insert into the gap between two adjacent condensing plates 8.

[0053] Once the regulating plate 34 is fully inserted, a continuous, serpentine airflow channel is formed inside the condensing chamber 3. The flow path length of the humid air inside the chamber is greatly increased, and the contact time with the condensing plate 8 is also extended. The water vapor in the air can be more fully condensed on the plate surface, and the dehumidification efficiency is significantly improved compared to the direct airflow channel. This solves the problem of short airflow path and incomplete dehumidification in small-volume dehumidification modules.

[0054] Meanwhile, when the adjusting plate 34 descends to the set limit position, the driven rack 36 reaches the end of its stroke, and the driving gear 35 disengages from the driven rack 36 and instead engages with the follower gear 40 in the follower groove 39. At this time, the main shaft 11 still needs to continue rotating to drive the drainage, sewage discharge, and vibration mechanism to operate continuously. The follower gear 40 slides along the follower groove 39 under the push of the driving gear 35, compressing the follower spring 41 on the rear side. The elastic deformation of the follower spring 41 absorbs the excess stroke generated by the continuous rotation of the main shaft 11, so that the adjusting plate 34 remains in the current position and does not continue to descend, and there will be no problem of structural jamming or motor stalling.

[0055] Under this condition, the cooling fan 7 runs at full speed, driving the humid air inside the box to continuously enter the condensation chamber 3, and fully contact the low-temperature condensation plate 8 for dehumidification along the curved air duct. The dried air then flows back into the metering box body 1. The condensate drips down the plate surface into the arc-shaped water collection tank 9 after being shaken off by vibration. After being filtered and pressurized, it is actively discharged outside the box.

[0056] Then, as the humidity inside the chamber gradually decreases and falls below the safety threshold, the control unit controls the power motor 48 to rotate in reverse, driving the main shaft 11 to rotate synchronously in reverse.

[0057] The driving gear 35 rotates in the opposite direction, and the follower spring 41 gradually rebounds, pushing the follower tooth 40 to maintain meshing with the driving gear 35. After the follower tooth 40 returns to the end of the follower slide groove 39, the driving gear 35 re-meshes with the driven rack 36, driving the L-shaped transmission rod 37 to move in the opposite direction and reset along the guide rod 38. The second transmission rod 42 retracts synchronously. Through the cooperation of the traction slide rod 46 and the inclined guide slide rail 45, the adjusting slider 43 is driven to slide upward along the adjusting slide groove 44. The adjusting plate 34 gradually retracts upward, disengaging from the gap of the condensing plate 8. The air duct in the condensing cavity 3 gradually returns to a straight state, reducing wind resistance and returning to the mode of prioritizing heat dissipation.

[0058] At the same time, the main shaft 11 reverses to drive the reciprocating transmission assembly, the drain auger 12, and the vibration triggering mechanism to run synchronously at low speed. After continuing to drain the remaining condensate in the arc-shaped water collection tank 9 and completing the last round of self-cleaning of the pipeline and the plate surface, the power motor 48 stops running, the whole mechanism returns to the initial standby state, and the cooling fan 7 resumes low-speed ventilation mode, waiting for the next dehumidification trigger.

[0059] The working principle of the intelligent monitoring electricity metering box provided by this invention is as follows: First, by ensuring the cold end of the semiconductor cooler 49 is tightly fitted to the end of the condenser plate 8, the cooling capacity is evenly transferred to the entire surface of the condenser plate 8. The cooling fan 7 drives the humid air inside the metering chamber 1 to enter the condensing chamber 3 through the air inlet 5. After the humid air comes into contact with the low-temperature condenser plate 8, the water vapor condenses into liquid water droplets, which drip down the plate surface and collect in the bottom arc-shaped water collection tank 9. The dehumidified dry air flows back into the metering chamber 1 through the air outlet 6, completing the air circulation and basic dehumidification.

[0060] When the humidity sensor detects that the humidity inside the chamber has reached the trigger threshold, the drive motor 48 starts in the forward direction, and the main shaft 11 rotates at a constant speed. The reciprocating drive disc 18 at the bottom of the main shaft 11 rotates synchronously, driving the eccentric shaft 19 to perform circular motion, which is converted into axial reciprocating motion of the piston rod 17 within the horizontal tube of the three-way pipe 14 via the reciprocating connecting rod 20. When the piston rod 17 moves outward, a negative pressure is formed in the pump chamber, the upper one-way valve 15 opens and the lower one-way valve 15 closes, and the condensate in the arc-shaped water collection tank 9 is drawn into the pump chamber through the water guide port 10. When the piston rod 17 moves inward, the pressure in the pump chamber increases, the upper one-way valve 15 closes and the lower one-way valve 15 opens, and the condensate is pressurized and discharged outside the chamber through the drain port 16. The pressurized water flow can flush out soft blockages at the drain port 16, avoiding the problem of easy sludge accumulation and blockage caused by gravity drainage.

[0061] Meanwhile, the main shaft 11 changes the power direction through the meshing of the first bevel gear 24 and the second bevel gear 25, driving the sewage auger 12 to rotate at a low speed; the arc-shaped intercepting net 13 in the water inlet 10 intercepts solid impurities such as dust and flocculents in the condensate, and the sewage auger 12 continuously pushes the impurities deposited at the bottom of the tank to move axially, and finally pushes them to the sewage outlet 23. The impurities fall into the sewage box 22 installed below along the rectangular sewage guide rail 21 by their own weight and are stored in a concentrated manner, so as to avoid the arc-shaped intercepting net 13 being blocked by impurities and becoming ineffective.

[0062] Furthermore, the main shaft 11 drives the trigger disk 26 to rotate synchronously. The trigger protrusion 27 on the disk surface intermittently abuts and pushes the trigger guide rod 32, causing the first transmission rod 29 to move laterally. The reset contact block 33 compresses the reset spring 31 to store energy. After the trigger protrusion 27 disengages from the trigger guide rod 32, the reset spring 31 rebounds instantaneously, and the vibration ring 30 on the first transmission rod 29 strikes the end of the condenser plate 8, causing the condenser plate 8 to generate high-frequency micro-vibration. The vibration can shake off the water film on the plate surface, accelerate the condensation dripping, reduce the thermal resistance of the water film, and at the same time shake off the floating dust attached to the plate surface, maintaining the long-term stability of the condensation heat exchange efficiency.

[0063] When the main shaft 11 drives the driving gear 35 to rotate in the forward direction, the driving gear 35 first meshes with the driven rack 36, driving the L-shaped transmission rod 37 to move along the guide rod 38 towards the condensing cavity 3. The second transmission rod 42 at the top of the L-shaped transmission rod 37 moves synchronously, and through the cooperation of the traction slide rod 46 and the inclined surface of the inclined guide slide rail 45, the lateral displacement is converted into the vertical displacement of the adjusting slider 43, which drives the adjusting plate 34 to move down along the adjusting slide groove 44 and insert into the gap of the adjacent condensing plate 8, so that a zigzag air duct is formed in the condensing cavity 3, which prolongs the residence time of humid air and improves the dehumidification intensity.

[0064] After the adjusting plate 34 descends to its limit position, the driven rack 36 reaches the end of its stroke, the driving gear 35 disengages from the driven rack 36 and engages with the follower gear 40 in the follower groove 39; the follower spring 41 is compressed, and the excess stroke of the main shaft 11 is absorbed by the elastic deformation, so that the adjusting plate 34 is kept in the current position and the structure is prevented from jamming.

[0065] When the humidity inside the chamber drops below the safety threshold, the drive motor 48 starts in reverse, and the main shaft 11 reverses synchronously. The drive gear 35 rotates in reverse, and the follower spring 41 gradually rebounds, pushing the follower gear 40 to maintain engagement with the drive gear 35 until the follower gear 40 returns to the end of the follower slide groove 39; then the drive gear 35 re-engages with the driven rack 36, driving the L-shaped transmission rod 37 to move in reverse and return to its original position, and the adjusting plate 34 moves upward and retracts synchronously, restoring the air duct in the condensation chamber 3 to a straight-through state, reducing air resistance, and returning to the heat dissipation priority mode.

[0066] When the main shaft 11 reverses, it simultaneously drives the reciprocating transmission assembly, the sewage auger 12, and the vibration triggering mechanism to run at low speed. After emptying the remaining water in the arc-shaped water collection tank 9, the power motor 48 stops, and the entire system returns to standby mode, waiting for the next dehumidification trigger.

[0067] When the humidity inside the chamber reaches a safe threshold, the motor 48 stops, and the spindle 11 remains stationary. The adjusting plate 34 is in the high-position retracted state, and the condensing chamber 3 has a straight ventilation duct with minimal air resistance; the cooling fan 7 runs at low speed to maintain air circulation inside the chamber and ensure heat dissipation for electrical components. The semiconductor cooler 49 maintains low-power operation, providing basic condensation and dehumidification; residual water at the drain outlet 16 forms a natural water seal, preventing external moisture and debris from flowing back into the chamber through the drainage path.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An intelligent monitoring power metering box, characterized in that: It includes a metering box body (1) and a dehumidifying base (2) disposed at its bottom, wherein a humidity sensor is disposed inside the metering box body (1); The dehumidification base (2) is divided into upper and lower operating areas. The upper operating area is symmetrically provided with condensation chambers (3), and the equipment installation chamber (4) is provided between the two condensation chambers (3). The dehumidification base (2) has air inlets (5) on both sides that connect to the condensation chambers (3), and air outlets (6) symmetrically provided on the top that connect to the metering box body (1). A cooling fan (7) is provided in the air outlet (6). The condensing chamber (3) is equipped with multiple vertically arranged condensing plates (8), and the bottom of the condensing chamber (3) is equipped with an arc-shaped water collection trough (9). The lower operating area is equipped with a positive pressure drainage mechanism. The water inlet of the positive pressure drainage mechanism is connected to the arc-shaped water collection trough (9) through the water guide (10), and the water outlet extends to the outside of the dehumidification base (2). The equipment installation cavity (4) is provided with a vertically arranged main shaft (11), which extends downward into the lower operating area and is connected to the positive pressure drainage mechanism. The arc-shaped water collection tank (9) is equipped with a rotatable auger (12), and the water inlet (10) is equipped with an arc-shaped intercepting net (13). The main shaft (11) is connected to the auger (12) in a transmission. The end of the condenser plate (8) is connected to a vibration triggering mechanism, and the main shaft (11) is connected to the vibration triggering mechanism to drive the condenser plate (8) to generate micro-vibration.

2. The intelligent monitoring power metering box according to claim 1, characterized in that: The positive pressure drainage mechanism includes a symmetrically arranged three-way pipe (14), the top of the vertical pipe of the three-way pipe (14) is connected to the water inlet (10), a one-way valve (15) is symmetrically arranged inside the vertical pipe, and the drain outlet (16) at the bottom of the vertical pipe extends to the outside of the dehumidification base (2). A piston rod (17) is slidably disposed inside the horizontal tube of the three-way pipe (14), and the piston rod (17) is connected to the main shaft (11) for transmission.

3. The intelligent monitoring power metering box according to claim 2, characterized in that: A reciprocating transmission assembly is provided between the main shaft (11) and the piston rod (17). The reciprocating transmission assembly includes a reciprocating drive disk (18) and an eccentric shaft (19). The reciprocating drive disk (18) is coaxially fixed to the bottom of the main shaft (11), and the eccentric shaft (19) is eccentrically fixed to the bottom end face of the reciprocating drive disk (18). Reciprocating connecting rods (20) are symmetrically hinged at both ends of the eccentric shaft (19), and the other end of the reciprocating connecting rod (20) is hinged to the end of the corresponding side piston rod (17).

4. The intelligent monitoring power metering box according to claim 1, characterized in that: The lower operating area is symmetrically provided with rectangular sewage guide rails (21), and a sewage box (22) with a top opening is slidably provided inside the sewage guide rails (21). The bottom of the arc-shaped water collection tank (9) is provided with a drain outlet (23), which extends to the inner top of the drain guide rail (21). The drain auger (12) is used to push the impurities intercepted by the arc-shaped interception net (13) to the drain outlet (23) and collect them in the drain box (22).

5. The intelligent monitoring power metering box according to claim 1, characterized in that: A bevel gear transmission assembly is provided between the main shaft (11) and the sewage auger (12). The bevel gear transmission assembly includes a first bevel gear (24) and a second bevel gear (25). The first bevel gear (24) is coaxially fixed to the middle section of the main shaft (11), and the second bevel gear (25) is fixed to the shaft end of the sewage auger (12). The first bevel gear (24) and the second bevel gear (25) mesh with each other.

6. The intelligent monitoring power metering box according to claim 1, characterized in that: A cam trigger assembly is provided between the main shaft (11) and the vibration triggering mechanism. The cam trigger assembly includes a trigger disk (26) and a trigger protrusion (27). The trigger disk (26) is coaxially fixed to the middle section of the main shaft (11), and the trigger protrusion (27) is symmetrically fixed to the end face of the trigger disk (26).

7. The intelligent monitoring power metering box according to claim 6, characterized in that: The condensing chamber (3) is symmetrically equipped with two partition plates (28) to symmetrically separate two drying chambers within the condensing chamber (3); The vibration triggering mechanism includes a first transmission rod (29), a vibration ring (30), and a reset spring (31). The first transmission rod (29) is slidably disposed between the equipment mounting cavity (4) and the drying cavity along the axial direction. A triggering guide rod (32) that abuts against the triggering protrusion (27) is fixedly connected to the middle section of the first transmission rod (29), and reset contact blocks (33) are fixedly connected to both ends. The vibration ring (30) is uniformly fixed on the first transmission rod (29) and corresponds one-to-one with the condensing plate (8). The reset spring (31) is symmetrically sleeved on the outer periphery of the first transmission rod (29) and located between the reset contact block (33) and the outermost condensing plate (8).

8. The intelligent monitoring power metering box according to claim 1, characterized in that: The condensation chamber (3) is also provided with a number of vertically movable adjustment plates (34), which are arranged alternately with the condensation plates (8); The main shaft (11) is connected to the adjusting plate (34) via a gear and rack transmission assembly, driving the adjusting plate (34) to insert into or disengage from the gap of the adjacent condensing plate (8) and switch the air duct configuration in the condensing chamber. The gear and rack transmission assembly includes a driving gear (35), a driven rack (36), and an L-shaped transmission rod (37). The driving gear (35) is coaxially fixed to the middle section of the main shaft (11). Guide rods (38) are symmetrically fixed inside the equipment mounting cavity (4). The L-shaped transmission rod (37) is fixed to the ends of two adjacent guide rods (38). The driven rack (36) is fixed to the long end of the L-shaped transmission rod (37). The driving gear (35) and the driven rack (36) mesh and transmit power.

9. The intelligent monitoring power metering box according to claim 8, characterized in that: The long end of the L-shaped transmission rod (37) is provided with a follower groove (39), and a follower tooth (40) is slidably arranged inside the follower groove (39). A follower spring (41) is symmetrically arranged between the end of the follower tooth (40) and the inner wall of the follower groove (39). After the adjustment plate (34) moves to the set position, the driving gear (35) disengages from the driven rack (36) and engages with the follower gear (40). The extension and retraction of the follower spring (41) compensates for the continuous rotation of the main shaft (11), so that the adjustment plate (34) remains in a fixed position. The top of the L-shaped transmission rod (37) is fixedly connected to a second transmission rod (42), which extends axially into the interior of the drying chamber. The adjusting plate (34) has an adjusting slider (43) fixedly connected to its end. The partition plate (28) has a vertical adjusting groove (44) adapted to the adjusting slider (43). The end of the adjusting slider (43) extends to the drying chamber and is fixedly connected to an oblique guide rail (45). The second transmission rod (42) has a traction rod (46) adapted to the oblique guide rail (45) fixedly connected to it.

10. The intelligent monitoring power metering box according to claim 1, characterized in that: A reducer (47) is fixedly connected inside the equipment mounting cavity (4). A power motor (48) is fixedly connected to the input end of the reducer (47), and the output end of the reducer (47) is fixedly connected to the main shaft (11). A semiconductor cooler (49) is fixedly connected to the outside of the dehumidification base (2). The hot end of the semiconductor cooler (49) faces the outside of the dehumidification base (2), and the cold end extends into the drying chamber. The end of the condenser plate (8) is fixedly connected to the cold end of the semiconductor cooler (49).

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