A temperature warning power distribution cabinet

Abstract

The application discloses a temperature warning power distribution cabinet, and relates to the technical field of power distribution cabinets.The power distribution cabinet comprises a cabinet body, which is divided into an upper chamber and a lower chamber.A mounting rail, a temperature detection unit and a heat dissipation assembly are arranged in the upper chamber, and a dehumidification assembly is arranged in the lower chamber.The heat dissipation assembly comprises an air compressor and a refrigeration unit arranged on the side wall of the cabinet body.A blowing plate is arranged at the bottom of the upper chamber, a mounting rack is rotatably arranged on one side of the upper chamber, a blowing head is slidably arranged on the mounting rack, and an exhaust fan is arranged on the top of the cabinet body.When the electrical elements in the power distribution cabinet are cooled, the air compressor and the refrigeration unit are started, and the air is dried by the dehumidification assembly.The power distribution cabinet realizes layered gradient heat exchange and cooling, avoids the blocking of elements on the sliding rotating side, and detects multiple temperature gradients, thereby improving the overall cooling effect of the power distribution cabinet.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically a power distribution cabinet with temperature early warning capability. Background Technology

[0002] In power systems, distribution cabinets, as the final-level equipment, are mainly used to centrally install various electrical components, enabling the monitoring and control of circuit status. They are also an indispensable component for realizing intelligent, information-based, and interactive smart power networks. Distribution cabinets strictly adhere to electrical wiring specifications, integrating switching equipment, measuring instruments, protective electrical components, and auxiliary devices within a closed or semi-closed metal cabinet. They undertake the core function of power distribution and play an irreplaceable and vital role in both residential and industrial production scenarios.

[0003] Most existing power distribution cabinets are used in indoor applications, with relatively few products designed for independent outdoor deployment. However, in some operational scenarios, due to site constraints and lack of indoor installation space, the power distribution cabinet must be directly installed outdoors. Outdoor conditions place higher demands on the cabinet's heat dissipation and moisture protection, requiring dedicated cooling and dehumidification mechanisms to ensure stable equipment operation.

[0004] Traditional power distribution cabinets generally employ a bottom-up airflow cooling mode, which has significant drawbacks. Firstly, as the cooling airflow moves upwards, it gradually exchanges heat with the components, causing the airflow temperature to rise continuously, resulting in insufficient heat dissipation for the electrical components in the upper part of the cabinet. Simultaneously, the varying models and specifications of the components inside the cabinet, along with their staggered installation heights, create multiple airflow obstructions, further disrupting the airflow path and worsening overall heat dissipation performance. Secondly, outside air must be dehumidified before entering the cabinet; otherwise, condensation easily forms inside, causing component corrosion and short circuits. Existing dehumidification structures do not fully utilize desiccants, resulting in rapid desiccant consumption and poor dehumidification stability.

[0005] In summary, existing conventional power distribution cabinets cannot meet the requirements of efficient heat dissipation and reliable dehumidification for outdoor use. Therefore, there is an urgent need to develop an outdoor power distribution cabinet that can overcome the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a power distribution cabinet with temperature early warning capability to solve the problems raised in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: the power distribution cabinet includes a cabinet body, which is divided into an upper chamber and a lower chamber. The upper chamber is equipped with an installation rail, a temperature detection unit and a heat dissipation component, and the lower chamber is equipped with a dehumidification component. The heat dissipation assembly includes an air compressor and a refrigeration unit mounted on the side wall of the cabinet. The air compressor and refrigeration unit are connected by pipes, and the refrigeration unit is connected to the dehumidification assembly by pipes. An air blowing plate is installed at the bottom of the upper chamber, and a mounting bracket is rotatably mounted on one side of the upper chamber. An air blowing head is slidably mounted on the mounting bracket. Both the air blowing plate and the air blowing head are connected to the dehumidification assembly by pipes. An exhaust fan is installed at the top of the cabinet. When dissipating heat from the electrical components in the distribution cabinet, the air compressor and refrigeration unit start, and the air is dried by the dehumidification assembly. By installing the electrical components in the upper chamber in order of increasing heat generation, and blowing air upwards through the air blowing plate, the air first exchanges heat with the hottest electrical components at the bottom, and then exchanges heat upwards sequentially. Finally, the heat is exhausted through an exhaust fan. However, the electrical components installed in the electrical cabinet may create uneven obstructions due to differences in model, size, and position, affecting the heat dissipation effect. By setting a mounting bracket on one side of the upper chamber, the air blower head can be driven by a reciprocating screw and motor to slide on the mounting bracket and blow air onto the side of the electrical components. At the same time, the mounting bracket can rotate within a certain angle, thereby reducing the obstruction of the airflow by the electrical components and improving the heat dissipation effect. For applications with high heat dissipation requirements, the aforementioned mounting brackets and air blowers can be symmetrically installed in the cabinet. A temperature detection unit is installed in the upper chamber to monitor, warn, and control the temperature inside the cabinet and to control the heat dissipation. The temperature detection unit should have at least three sets (upper, middle, and lower) to meet the requirements of gradient detection.

[0008] As a preferred technical solution, the air blowing head includes a housing slidably mounted on a mounting bracket. An air outlet is provided on the housing, and an annular shell is installed inside the air outlet. A base is installed inside the annular shell, and a slide rail is provided on the base. A slider is slidably mounted within the slide rail, and a shield is mounted on the slider. A drive ring is rotatably mounted inside the annular shell, and a drive groove is provided on the drive ring. A rotating pin is mounted on the shield and is slidably mounted in the drive groove. A drive motor is mounted on the annular shell, and a drive gear is mounted on the output shaft of the drive motor. The drive ring has drive tooth grooves along its circumference that mesh with the drive gear. When cooling electrical components in the distribution cabinet, the temperature detection unit controls the drive motor to rotate. The drive motor causes the drive ring to rotate, thereby causing the shield to slide away from or towards the center of the air outlet, thus adjusting the size of the air outlet. A valve then controls the airflow of the air outlet duct, achieving localized adjustment of the cooling effect while ensuring the airflow of the air blowing plate, avoiding localized overheating or overcooling.

[0009] As a preferred technical solution, the dehumidification component includes a cylinder installed in the lower chamber. From bottom to top, a partition plate, a baffle plate, a coarse-perforated plate, and a fine-perforated plate are sequentially installed inside the cylinder. A rotary motor is installed at the top of the cylinder, and a rotating shaft is mounted on the output shaft of the rotary motor. A turntable is rotatably mounted at the center of the partition plate, and the end of the rotating shaft is connected to the turntable. A horizontal plate is installed on the side wall of the turntable, and a reciprocating screw is rotatably mounted on the horizontal plate. An annular groove is formed on the side wall of the cylinder, and a toothed groove is formed at the bottom of the annular groove. A gear meshing with the toothed groove is installed at one end of the reciprocating screw. A nozzle is slidably mounted on the reciprocating screw. An air passage is formed inside the turntable, and the nozzle communicates with the control system through the air passage. When the electrical components in the distribution cabinet dissipate heat, the incoming air needs to be dehumidified to prevent condensation. This is achieved by connecting the output air of the refrigeration unit to the nozzle through a pipe. Driven by a rotary motor, the horizontal plate rotates, which in turn drives the reciprocating screw through the meshing of the toothed groove and gear, causing the nozzle to move back and forth. This fully utilizes the baffle plate and desiccant. Multiple sets of these reciprocating nozzles can also be installed along the circumference to improve dehumidification efficiency and the utilization rate of the baffle plate and desiccant. However, this requires increasing the output pressure of the air compressor and adding a device to increase the air pressure at the air outlet of the cylinder.

[0010] As a preferred technical solution, the dehumidification assembly also includes mounting seats respectively installed on the rotating shaft sections on both sides of the fine perforated plate. A flap is rotatably mounted on one side of the mounting seat, and an adaptation plate is slidably mounted on the bottom of the flap. A leveling comb is mounted on the other side of the mounting seat. The leveling comb consists of a main comb near the mounting seat and a split comb rotatably mounted on the main comb. Rollers are rotatably mounted on the top of the flap and the split comb near the side wall of the cylinder. A pressure ring is slidably mounted between the coarse perforated plate and the fine perforated plate. An electric push rod is mounted on the top of the cylinder. The actuator end of the electric push rod is connected to the pressure ring. When the rotary motor rotates, the rotating shaft drives the flap and the leveling comb to rotate. The tilt angle of the flap is controlled by the pressure ring, and the tilt angle should not exceed 30°. When the flap tilts, the bottom adapting plate slides out to compensate for the gap between the flap and the coarse and fine perforation plates. The adapting plate can be popped out by the spring rod to have a certain pressure. After the flap turns and stirs the desiccant particles, the leveling comb evens them out. At the same time, when the pressure ring descends, the split comb rotates under its action to adapt to its height, so as not to form interference. This allows the desiccant particles to be fully utilized instead of relying solely on the desiccant particles at the bottom to play the main dehumidification role. At the same time, it can both stir to prevent accumulation and turn the layers.

[0011] As a preferred technical solution, retainers are symmetrically installed on both sides of the annular groove, and one end of the horizontal plate is slidably installed inside the retainer.

[0012] As a preferred technical solution, desiccant particles are filled between the coarse-hole plate and the fine-hole plate, as well as between the fine-hole plate and the top of the cylinder. The desiccant particles at the bottom of the fine-hole plate are smaller in diameter than those at the top. By placing the desiccant in two groups, the larger particles at the bottom have larger gaps between them, making it less likely for them to expand and accumulate and block the gaps after dehumidification. The smaller particles at the top have smaller gaps between them, resulting in better dehumidification. This arrangement achieves a better dehumidification effect. At the same time, the stirring and baffle plates mentioned above increase its service life.

[0013] As a preferred technical solution, protrusions are provided on both sides of the flip plate.

[0014] As a preferred technical solution, the top of the pressure ring is a wedge-shaped surface. By setting the upper surface of the pressure ring as a wedge-shaped surface, it is ensured that the desiccant particles can roll off from the top when it rises from the bottom.

[0015] As a preferred technical solution, a waterproof cover is provided on the top of the nozzle.

[0016] As a preferred technical solution, springs for resetting are installed at the rotating parts of both the flip plate and the split comb.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This application can achieve layered gradient heat exchange and heat dissipation inside the cabinet by setting heat dissipation components, and can slide and rotate to avoid component obstruction. Multiple temperature gradient detections can improve the overall heat dissipation effect of the power distribution cabinet.

[0018] 2. This application features a rotatable and reciprocating nozzle that works in conjunction with a baffle plate and desiccant to fully dehumidify the air. Multiple nozzles enhance dehumidification efficiency and improve the utilization rate of the baffle plate and desiccant.

[0019] 3. This application achieves the ability to turn and stir desiccant particles through a dehumidification component, adaptively compensates for gaps to avoid jamming, levels and sorts the material layer, and separate combs avoid motion interference, so as to achieve full layering and utilization of desiccant and prevent particle accumulation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention; Figure 2 This is a schematic diagram of the overall first cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the overall second-view structure of the present invention; Figure 4 This is a schematic diagram of the overall structure of the dehumidification component of the present invention; Figure 5 This is a schematic diagram of the first cross-sectional structure of the dehumidification component of the present invention; Figure 6This is a schematic diagram of the second cross-sectional structure of the dehumidification component of the present invention; Figure 7 This is a schematic diagram of a first partial structure of the heat dissipation component of the present invention; Figure 8 This is a partial cross-sectional view of the heat dissipation component of the present invention; Figure 9 This is a schematic diagram of a second partial structure of the heat dissipation assembly of the present invention; Figure 10 This is a partial structural diagram of the dehumidification component of the present invention; Figure 11 for Figure 5 A magnified structural diagram of point A in the middle.

[0021] In the diagram: 1. Cabinet; 11. Upper chamber; 111. Mounting rail; 12. Lower chamber; 2. Temperature detection unit; 3. Heat dissipation assembly; 31. Air compressor; 32. Refrigeration unit; 33. Air blowing plate; 34. Mounting bracket; 35. Air blowing head; 351. Housing; 352. Air outlet; 353. Annular shell; 354. Base; 355. Slide rail; 356. Slider; 357. Sheath; 358. Drive ring; 359. Drive groove; 3510. Rotating pin; 3511. Drive motor; 4. Dehumidification components; 41. Cylinder; 42. Divider plate; 43. Baffle plate; 44. Coarse perforation plate; 441. Fine perforation plate; 45. Rotary motor; 46. Rotating shaft; 47. Turntable; 48. Horizontal plate; 49. Reciprocating screw; 410. Annular groove; 411. Tooth groove; 412. Gear; 413. Nozzle; 414. Mounting base; 415. Flip plate; 4151. Adaptation plate; 416. Leveling comb; 4161. Main comb; 4162. Split comb; 417. Roller; 418. Pressure ring; 419. Electric push rod; 420. Cage; 421. Protrusion. Detailed Implementation

[0022] 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.

[0023] Example: Figures 1-11 As shown, the present invention provides a technical solution for a power distribution cabinet with temperature early warning capability. The power distribution cabinet includes a cabinet body 1, which is divided into an upper chamber 11 and a lower chamber 12. The upper chamber 11 is equipped with an installation rail 111, a temperature detection unit 2 and a heat dissipation component 3, and the lower chamber 12 is equipped with a dehumidification component 4. The heat dissipation assembly 3 includes an air compressor 31 and a refrigeration unit 32 installed on the side wall of the cabinet 1. The air compressor 31 and the refrigeration unit 32 are connected by pipes, and the refrigeration unit 32 is connected to the dehumidification assembly 4 by pipes. An air blowing plate 33 is installed at the bottom of the upper chamber 11, and a mounting bracket 34 is rotatably installed on one side of the upper chamber 11. An air blowing head 35 is slidably installed on the mounting bracket 34. Both the air blowing plate 33 and the air blowing head 35 are connected to the dehumidification assembly 4 by pipes. An exhaust fan is installed on the top of the cabinet 1. When dissipating heat from the electrical components in the distribution cabinet, the air compressor 31 and the refrigeration unit 32 are started, and the air is dried by the dehumidification assembly 4. The electrical components are installed in the upper chamber 11 in order of increasing heat generation, and the air is blown upwards by the air blowing plate 33. The air first exchanges heat with the electrical components at the bottom, which have a higher temperature, and then exchanges heat upwards sequentially before being exhausted by the exhaust fan. However, due to differences in model and size, the electrical components installed in the electrical cabinet can create uneven obstructions, affecting the heat dissipation effect. By setting a mounting bracket 34 on one side of the upper chamber 11, the air blowing head 35 can be driven by a reciprocating screw and motor to slide on the mounting bracket 34 to blow air onto the side of the electrical components. At the same time, the mounting bracket 34 can rotate within a certain angle, thereby reducing the obstruction of the airflow by the electrical components and improving the heat dissipation effect. A temperature detection unit 2 is set in the upper chamber 11 to monitor, warn, and control the temperature inside the cabinet and to control the heat dissipation. The temperature detection unit 2 is set with at least three groups: upper, middle, and lower, to meet the requirements of gradient detection.

[0024] The air blowing head 35 includes a housing 351 slidably mounted on a mounting bracket 34. The housing 351 has an air outlet 352. An annular housing 353 is installed inside the air outlet 352. A base 354 is installed inside the annular housing 353. The base 354 has a slide rail 355. A slider 356 is slidably mounted inside the slide rail 355. A baffle 357 is mounted on the slider 356. A drive ring 358 is rotatably mounted inside the annular housing 353. The drive ring 358 has a drive groove 359. A rotating pin 3510 is mounted on the baffle 357. The rotating pin 3510 is slidably mounted in the drive groove 359. A drive mechanism is mounted on the annular housing 353. The motor 3511 has a drive gear mounted on its output shaft. The drive ring 358 has drive tooth grooves that mesh with the drive gear along the circumferential direction. When the electrical components in the distribution cabinet are being cooled, the temperature detection unit 2 controls the drive motor 3511 to rotate. The drive motor 3511 causes the drive ring 358 to rotate, which in turn causes the shield 357 to slide away from or closer to the center of the air outlet 352, thereby adjusting the size of the air outlet. The air volume of the air outlet is then controlled by a valve, so that the cooling effect can be locally adjusted while ensuring the air volume of the air blowing plate 33, thus avoiding local overheating or overcooling.

[0025] The dehumidification assembly 4 includes a cylinder 41 installed in the lower chamber 12. Inside the cylinder 41, from bottom to top, are sequentially installed a partition plate 42, a baffle plate 43, a coarse-perforated plate 44, and a fine-perforated plate 441. A rotary motor 45 is installed at the top of the cylinder 41, and a rotary shaft 46 is installed on the output shaft of the rotary motor 45. A turntable 47 is rotatably installed at the center of the partition plate 42. The end of the rotary shaft 46 is connected to the turntable 47. A horizontal plate 48 is installed on the side wall of the turntable 47, and a reciprocating screw 49 is rotatably installed on the horizontal plate 48. An annular groove 410 is formed on the side wall of the cylinder 41, and a toothed groove 411 is formed at the bottom of the annular groove 410. A gear 412 that meshes with the toothed groove 411 is installed at one end of the reciprocating screw 49. A nozzle 413 is slidably installed on the reciprocating screw 49. The turntable 47 has... The air duct and nozzle 413 are connected to the refrigeration unit 32. When the electrical components in the distribution cabinet dissipate heat, the incoming air needs to be dehumidified to prevent condensation. By connecting the output air of the refrigeration unit 32 to the nozzle 413 through a pipe, the horizontal plate 48 is rotated under the drive of the rotary motor 45. This drives the reciprocating screw 49 to rotate through the meshing of the toothed groove 411 and the gear 412, causing the nozzle 413 to move back and forth, thereby making full use of the baffle plate 43 and the desiccant. Multiple sets of this reciprocating nozzle 413 can also be set along the circumference to improve the dehumidification efficiency and the utilization rate of the baffle plate 43 and the desiccant. However, this requires increasing the output pressure of the air compressor 31 and adding a device to increase the air pressure at the air outlet end of the cylinder 41.

[0026] The dehumidification assembly 4 also includes mounting seats 414 respectively installed on the shaft segments of the rotating shaft 46 on both sides of the fine perforated plate 441. A flap 415 is rotatably mounted on one side of the mounting seat 414, and an adaptation plate 4151 is slidably mounted on the bottom of the flap 415. A leveling comb 416 is mounted on the other side of the mounting seat 414. The leveling comb 416 is divided into a main comb 4161 near the mounting seat 414 and a split comb 4162 rotatably mounted on the main comb 4161. Rollers 417 are rotatably mounted on the top of the flap 415 and the split comb 4162 near the side wall of the cylinder 41. A pressure ring 418 is slidably mounted between the coarse perforated plate 44 and the fine perforated plate 441. An electric push rod 419 is mounted on the top of the cylinder 41. The actuating end of the electric push rod 419 is connected to the pressure ring 418. When the rotating motor 45 rotates, the rotating shaft 46 drives the flap 415 and the leveling comb. Rotation of 416 controls the tilt angle of the flip plate 415 via the pressure ring 418. The tilt angle should be between 0° and 30°. When the flip plate 415 tilts, the bottom adapting plate 4151 slides out to compensate for the gap between the flip plate 415 and the coarse-hole plate 44 and fine-hole plate 441. The adapting plate 4151 can be popped out by the spring rod to have a certain pressure. After the flip plate 415 turns and stirs the desiccant particles, the leveling comb 416 smooths them evenly. The angle between the leveling comb 416 and the flip plate 415 should be between 30° and 180°. At the same time, when the pressure ring 418 descends, the split comb 4162 rotates under its action to adapt to its height, so as not to form interference. This allows the desiccant particles to be fully utilized instead of relying solely on the desiccant particles at the bottom to play the main dehumidification role. At the same time, it can both stir and prevent accumulation and turn the layers.

[0027] A retainer 420 is symmetrically installed on both sides of the annular groove 410, and one end of the cross plate 48 is slidably installed inside the retainer 420.

[0028] Desiccant particles are filled between the coarse-hole plate 44 and the fine-hole plate 441, as well as between the fine-hole plate 441 and the top of the cylinder 41. The desiccant particles at the bottom of the fine-hole plate 441 are smaller in diameter than those at the top. By placing the desiccant in two groups, the particles at the bottom are larger and have larger gaps between them, making it less likely for them to expand and accumulate and block the gaps after dehumidification. The particles at the top are smaller and have smaller gaps between them, resulting in better dehumidification. This arrangement achieves a better dehumidification effect. At the same time, the stirring and baffle plate 43 mentioned above increase its service life.

[0029] Both sides of the flap 415 are provided with protrusions 421.

[0030] The top of the pressure ring 418 is wedge-shaped. By setting the upper surface of the pressure ring 418 as a wedge-shaped surface, it is ensured that the desiccant particles can roll off from the top when it rises from the bottom.

[0031] The nozzle 413 is equipped with a waterproof cap on top.

[0032] Both the flap 415 and the split comb 4162 have springs installed at their rotating parts for resetting.

[0033] Working principle of the invention: When dissipating heat from the electrical components inside the distribution cabinet, the air compressor 31 and refrigeration unit 32 are started, and the air is dried by the dehumidification component 4. The electrical components are installed in the upper chamber 11 in order of increasing heat generation. Air is blown upwards by the air blowing plate 33, allowing heat exchange first with the hottest electrical components at the bottom, then sequentially upwards, and finally discharged by the exhaust fan. A mounting bracket 34 is installed on one side of the upper chamber 11, allowing the air blowing head 35 to slide on the bracket via a reciprocating screw and motor, blowing heat to the sides of the electrical components. The mounting bracket 34 can also rotate within a certain angle, reducing obstruction of the airflow by the electrical components and improving heat dissipation. When the equipment is running at full power, the air blowing head 35 moves to the bottom of the mounting bracket 34, increasing the air intake. Priority is given to cooling the bottom components, allowing the cooled air to exchange heat with the components above. Then, based on feedback from the temperature monitor 2, heat is applied to other electrical components at different temperature gradients. Cooling; when air enters the cabinet and sprays from the nozzle 413, the horizontal plate 48 rotates under the drive of the rotary motor 45, thereby driving the reciprocating screw 49 to rotate through the meshing of the toothed groove 411 and gear 412, causing the nozzle 413 to move back and forth, thus making full use of the baffle plate 43 and the desiccant; at the same time as the rotary motor 45 rotates, the rotating shaft 46 drives the flip plate 415 and the leveling comb 416 to rotate, and the tilt angle of the flip plate 415 is controlled by the pressure ring 418. When the flip plate 415 is tilted, the bottom The adapting plate 4151 slides out to compensate for the gap between the flip plate 415 and the coarse-hole plate 44 and fine-hole plate 441. After the flip plate 415 agitates and stirs the desiccant particles, the leveling comb 416 evens them out. At the same time, when the pressure ring 418 descends, the split comb 4162 rotates under its action to adapt to its height, thus avoiding interference. This allows the desiccant particles to be fully utilized instead of relying solely on the desiccant particles at the bottom for the main dehumidification function. It also serves to both agitate and prevent accumulation while turning the layers.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A power distribution cabinet with temperature early warning capability, characterized in that: The distribution cabinet includes a cabinet (1), which is divided into an upper chamber (11) and a lower chamber (12). The upper chamber (11) is equipped with an installation rail (111), a temperature detection unit (2) and a heat dissipation component (3), and the lower chamber (12) is equipped with a dehumidification component (4). The heat dissipation component (3) includes an air compressor (31) and a refrigeration unit (32) installed on the side wall of the cabinet (1). The air compressor (31) and the refrigeration unit (32) are connected by pipes. The refrigeration unit (32) is connected to the dehumidification component (4) by pipes. An air blowing plate (33) is installed at the bottom of the upper chamber (11), and a mounting bracket (34) is rotatably installed on one side of the upper chamber (11). An air blowing head (35) is slidably installed on the mounting bracket (34). The air blowing plate (33) and the air blowing head (35) are both connected to the dehumidification component (4) by pipes. An exhaust fan is installed on the top of the cabinet (1).

2. The temperature-predictive power distribution cabinet according to claim 1, characterized in that: The air blowing head (35) includes a housing (351) slidably mounted on a mounting bracket (34). An air outlet (352) is provided on the housing (351). An annular shell (353) is installed inside the air outlet (352). A base (354) is installed inside the annular shell (353). A slide rail (355) is provided on the base (354). A slider (356) is slidably mounted inside the slide rail (355). A shield (357) is installed on the slider (356). The annular shell (351)... 3) A drive ring (358) is rotatably mounted inside the drive ring (358), a drive groove (359) is provided on the drive ring (358), a rotating pin (3510) is installed on the shield (357), the rotating pin (3510) is slidably mounted in the drive groove (359), a drive motor (3511) is installed on the annular shell (353), a drive gear is installed on the output shaft of the drive motor (3511), and a drive tooth groove that meshes with the drive gear is provided along the circumferential direction in the drive ring (358).

3. A temperature-predictive power distribution cabinet according to claim 1, characterized in that: The dehumidification assembly (4) includes a cylinder (41) installed in the lower chamber (12). Inside the cylinder (41), from bottom to top, are installed a partition plate (42), a baffle plate (43), a coarse-perforated plate (44), and a fine-perforated plate (441). A rotary motor (45) is installed at the top of the cylinder (41). A rotary shaft (46) is installed on the output shaft of the rotary motor (45). A turntable (47) is rotatably installed at the center of the partition plate (42). The end of the rotary shaft (46) is connected to the turntable (47). A horizontal plate (48) is installed on the side wall of the cylinder (41), and a reciprocating screw (49) is rotatably installed on the horizontal plate (48). An annular groove (410) is opened on the side wall of the cylinder (41), and a toothed groove (411) is opened at the bottom of the annular groove (410). A gear (412) that meshes with the toothed groove (411) is installed at one end of the reciprocating screw (49). A nozzle (413) is slidably installed on the reciprocating screw (49). An air passage is opened in the turntable (47), and the nozzle (413) is connected to the refrigeration unit (32) through the air passage.

4. A temperature-predictive power distribution cabinet according to claim 3, characterized in that: The dehumidification assembly (4) further includes mounting seats (414) respectively installed on the shaft segments of the rotating shafts (46) on both sides of the perforated plate (441). A flap (415) is rotatably mounted on one side of the mounting seat (414), and an adaptation plate (4151) is slidably mounted on the bottom of the flap (415). A leveling comb (416) is installed on the other side of the mounting seat (414). The leveling comb (416) is divided into a main comb (4161) near the mounting seat (414) and a... A split comb (4162) is rotatably mounted on the main comb (4161). Rollers (417) are rotatably mounted on the top of the flip plate (415) and the split comb (4162) near the side wall of the cylinder (41). A pressure ring (418) is slidably mounted between the coarse hole plate (44) and the fine hole plate (441). An electric push rod (419) is mounted on the top of the cylinder (41), and the actuating end of the electric push rod (419) is connected to the pressure ring (418).

5. A temperature-predictive power distribution cabinet according to claim 4, characterized in that: A retainer (420) is symmetrically installed on both sides of the annular groove (410), and one end of the cross plate (48) is slidably installed in the retainer (420).

6. A temperature-predictive power distribution cabinet according to claim 3, characterized in that: Desiccant particles are filled between the coarse-hole plate (44) and the fine-hole plate (441) and between the fine-hole plate (441) and the top of the cylinder (41). The desiccant particles at the bottom of the fine-hole plate (441) are smaller than the diameter of the desiccant particles at the top of the fine-hole plate (441).

7. A temperature-predictive power distribution cabinet according to claim 4, characterized in that: Both sides of the flap (415) are provided with protrusions (421).

8. A temperature-predictive power distribution cabinet according to claim 4, characterized in that: The top of the pressure ring (418) is wedge-shaped.

9. A temperature-predictive power distribution cabinet according to claim 3, characterized in that: The nozzle (413) is provided with a waterproof cap on top.

10. A temperature-predictive power distribution cabinet according to claim 4, characterized in that: Both the flap (415) and the split comb (4162) are equipped with springs for resetting at their rotating parts.

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