Multi-stage moisture-proof safety electrical installation cabinet

Abstract

The utility model discloses a multi-stage moisture-proof safe electrical installation cabinet, which is characterized in that a cabinet body is connected with a cabinet door, and two opposite sides of the cabinet body are respectively provided with an inner ventilation opening; the two protection side covers are connected to the two opposite sides of the cabinet body respectively and provided with outer ventilation openings located below the inner ventilation openings, ventilation cavities are formed in the sides, close to the cabinet body, of the protection side covers, the upper portions and the lower portions of the ventilation cavities communicate with the inner ventilation openings and the outer ventilation openings respectively, and a first dehumidification module and a second dehumidification module which are distributed up and down are arranged in the ventilation cavities. The first dehumidification module comprises a plurality of inclined flow guide plates, a flow guide channel is formed between every two adjacent inclined flow guide plates, the second dehumidification module comprises a plurality of condensation vertical plates, a condensation channel communicated with the flow guide channel is formed between every two adjacent condensation vertical plates, and a drainage hole is formed in the bottom of the protective side cover. The power distribution cabinet is reliable in waterproof and dustproof performance, reliable in safety performance, good in heat dissipation performance, energy-saving, environment-friendly, moisture-proof and low in operation cost.

Description

Technical Field

[0001] This utility model relates to the field of electrical cabinets, and in particular to a multi-level moisture-proof safety electrical installation cabinet. Background Technology

[0002] Electrical installation cabinets, also known as distribution cabinets, are the final stage equipment in a power distribution system. The internal components of a distribution cabinet include highly integrated microcontrollers with parallel output from a bus, high-precision current and voltage transformers, high-insulation-strength output intermediate relays, and high-reliability switching power supply modules.

[0003] In traditional technology, electrical installation cabinets are metal shell structures with doors connecting to the openings to enclose the internal space. During use, the electrical modules inside the cabinet generate heat, and the accumulation of this heat can affect the performance of the electrical modules. In related technologies, heat dissipation holes are set on the sides of the shell to avoid heat accumulation. However, ambient air can easily enter the interior of the electrical installation cabinet, affecting the electrical performance and lifespan of the internal electrical modules and posing safety hazards such as short circuits. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a multi-level moisture-proof safety electrical installation cabinet with good heat dissipation performance, good moisture and dust resistance, and reliable protective effect.

[0005] A multi-level moisture-proof safety electrical installation cabinet according to an embodiment of the present utility model includes:

[0006] The cabinet has doors, and the back of the doors has a wiring structure. There are internal ventilation openings on both sides of the cabinet.

[0007] The protective side cover has two sections, each connected to opposite sides of the cabinet. The protective side cover has an external vent located below the internal vent. A ventilation cavity is located on the side of the protective side cover closest to the cabinet, with the internal and external vents connected vertically. A first dehumidification module and a second dehumidification module are arranged vertically within the ventilation cavity, both located between the internal and external vents. The first dehumidification module includes several inclined guide plates spaced apart along the direction of gravity, with a guide channel formed between each pair of adjacent inclined guide plates. The inclined guide plates form an acute angle with the horizontal plane. The second dehumidification module includes several condensing vertical plates spaced apart along the horizontal direction, with a condensing channel connecting the guide channel between each pair of adjacent condensing vertical plates. A drain hole connecting to the ventilation cavity is located at the bottom of the protective side cover.

[0008] In this embodiment, the horizontal projection of the condenser plate is wavy.

[0009] In this embodiment, the horizontal projections of all the inclined guide vanes are connected and cover the bottom of the ventilation cavity.

[0010] In this embodiment, the acute angle between the inclined guide plate and the horizontal plane is 45° to 60°.

[0011] In this embodiment, a fan is installed inside the cabinet, and the fan is located on one side of the internal ventilation opening.

[0012] In this embodiment, the drain hole is shaped like a truncated cone that tapers downwards.

[0013] In this embodiment, a dustproof plate is provided on the side of the protective side cover away from the cabinet, and the dustproof plate is connected to the edge of the external ventilation opening.

[0014] In this embodiment, a junction box is provided on the back of the cabinet, and the wiring structure is located in the junction box.

[0015] The embodiments of this utility model have at least the following beneficial effects:

[0016] A ventilation cavity is formed between the protective side cover and the side of the cabinet, providing ample buffer and condensation space for airflow into the cabinet interior. When moisture comes into contact with the cavity wall, it condenses and effectively separates from the air under gravity. Air enters from the lower external vent and exits from the upper internal vent, creating an upward airflow that effectively improves gas-liquid separation. Furthermore, even if some liquid or dust enters the ventilation cavity from the lower external vent, the height difference between the internal and external vents effectively prevents it from entering the cabinet interior through the internal vent. This ensures reliable waterproof and dustproof performance and enhances safety. It boasts excellent heat dissipation performance. By installing two dehumidification modules inside the ventilation cavity, air is cooled by contact with the condensation plate as it passes through the condensation channel. After condensation, the moisture falls along the condensation plate and is output through the drain hole. When the air passes through the guide channel, it is forcibly slowed down and its direction is changed by the inclined guide plate, which can effectively prolong the residence time of the air. This allows the liquefied moisture to be effectively separated from the air under the action of gravity. Furthermore, the inclined guide plate can effectively block liquid splashed in the ventilation cavity from reaching the inner ventilation opening. The winding and complex ventilation path can significantly improve the dehumidification performance. Moreover, dehumidification can be achieved under natural conditions, which is energy-saving, environmentally friendly, and has low operating costs. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a three-dimensional structural diagram of a multi-level moisture-proof safety electrical installation cabinet according to an embodiment of the present utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the multi-level moisture-proof safety electrical installation cabinet according to another perspective of an embodiment of this utility model.

[0020] Figure 3 This is a side view of the multi-level moisture-proof safety electrical installation cabinet according to an embodiment of the present utility model;

[0021] Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure of line A-A';

[0022] Figure 5 This is an exploded structural diagram of a multi-level moisture-proof safety electrical installation cabinet according to an embodiment of the present utility model;

[0023] Figure 6 This is an exploded structural diagram of the multi-level moisture-proof safety electrical installation cabinet according to another perspective of an embodiment of this utility model.

[0024] Figure label:

[0025] Cabinet body 100, cabinet door 110, wiring structure 120, internal ventilation opening 130, fan 140, junction box 150;

[0026] Protective side cover 200, external vent 210, ventilation cavity 220, inclined guide plate 230, guide channel 231, condensation vertical plate 240, condensation channel 241, drain hole 250, dustproof plate 260. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Electrical installation cabinets, also known as distribution cabinets, are the final-level equipment in a power distribution system. Internally, they house highly integrated microcontrollers with parallel bus outputs, high-precision current and voltage transformers, high-insulation-strength intermediate relays, and highly reliable switching power supply modules. Traditionally, electrical installation cabinets consist of a metal enclosure with doors at the openings to seal the interior. During operation, the heat generated by the electrical modules inside can accumulate and negatively impact their performance.

[0032] In related technologies, ventilation holes are installed on the sides of the enclosure to prevent heat accumulation. However, ambient air can easily enter the electrical mounting cabinet, affecting the electrical performance and lifespan of the internal electrical modules and posing safety hazards such as short circuits. Some technologies use desiccants inside the cabinet to absorb moisture and maintain low humidity. While this controls humidity to some extent, it requires frequent desiccant replacement, resulting in high operating and maintenance costs. Therefore, there is an urgent need for an electrical mounting cabinet that can meet heat dissipation requirements while providing efficient moisture and dust protection and eliminating the need for frequent maintenance.

[0033] The following is for reference only. Figure 1 To be continued Figure 6 This invention describes a multi-level moisture-proof safety electrical installation cabinet with good heat dissipation, good moisture and dust resistance, and reliable protection.

[0034] Reference Figures 1 to 6 A multi-level moisture-proof safety electrical installation cabinet according to an embodiment of this utility model includes:

[0035] The cabinet 100 is used to install electrical modules. The front of the cabinet 100 is movably connected to the cabinet door 110, which is specifically hinged to the cabinet 100. Preferably, the cabinet door 110 is provided with a window for installing a transparent panel or controller, which can facilitate the monitoring and management of the electrical modules inside the cabinet 100. The back of the cabinet door 110 is provided with a wiring structure 120, and the opposite sides of the cabinet 100 are provided with internal ventilation openings 130.

[0036] The protective side cover 200 has two parts, each connected to opposite sides of the cabinet 100. The side panel of the protective side cover 200 has an external ventilation opening 210 located below the lowest horizontal position of the internal ventilation opening 130. A ventilation cavity 220 is located on the side of the protective side cover 200 closest to the cabinet 100. The upper and lower parts of the ventilation cavity 220 are connected to the internal ventilation opening 130 and the external ventilation opening 210, respectively. The upper part of the ventilation cavity 220 is connected to the internal ventilation opening 130, and the lower part is connected to the external ventilation opening 210. A first dehumidification module and a second dehumidification module are arranged vertically within the ventilation cavity 220. The first dehumidification module is located at the lower horizontal position of the internal ventilation opening 130. Above the two dehumidification modules, both the first and second dehumidification modules are located between the inner vent 130 and the outer vent 210. The first dehumidification module is located on the side of the second dehumidification module closer to the inner vent 130. The first dehumidification module includes several parallel inclined guide plates 230 spaced apart along the direction of gravity. A guide channel 231 is formed between each pair of adjacent inclined guide plates 230. The guide channel 231 extends horizontally, and the inclined guide plates 230 form an acute angle with the horizontal plane, wherein the acute angle is set to 30° to 80°. The inclined guide plates 230 extend horizontally to form a blocking and guiding effect. The inclined guide plate 230 effectively controls the airflow path, providing sufficient time for gas-liquid separation and sufficient resistance for moisture to descend under gravity, effectively removing moisture from the air and achieving good dehumidification and moisture-proofing effects. The second dehumidification module includes several horizontally spaced condensing plates 240 extending along the direction of gravity. Each pair of adjacent condensing plates 240 forms a condensing channel 241 connecting the guide channel 231. The condensing channel 241 extends along the direction of gravity, ensuring full contact between the airflow and the condensing plate 240 as it passes through. After cooling, the liquid liquefies and separates from the gas under gravity. The liquid water adheres to the condensation plate 240 and flows down, thus achieving gas-liquid separation. This effectively controls the humidity inside the electrical installation cabinet to remain low, which can effectively improve the working performance of the electrical components inside the cabinet and ensure good safety performance. The bottom of the protective side cover 200 is provided with a drain hole 250 that connects to the ventilation cavity 220. The drain hole 250 is located below the second dehumidification module. Preferably, there are multiple drain holes 250. The water in the ventilation cavity 220 can be discharged in time through the drain holes 250 to avoid water accumulation and affecting the humidity of the airflow inside the cabinet 100.

[0037] A ventilation cavity 220 is formed between the protective side cover 200 and the side of the cabinet 100, providing ample buffering and condensation space for airflow into the interior of the cabinet 100. When moisture comes into contact with the cavity wall of the ventilation cavity 220, it condenses and effectively separates from the air under gravity. Air enters from the lower external ventilation port 210 and exits from the upper internal ventilation port 130, creating an upward airflow. The condensed moisture separates from the air under gravity, effectively improving the gas-liquid separation effect. This is the first stage of moisture prevention and dehumidification. Furthermore, even if some liquid or dust enters the ventilation cavity 220 from the lower external ventilation port 210 or drain hole 250, the height difference between the internal ventilation port 130 and the external ventilation port 210 effectively prevents this liquid or dust from entering the interior of the cabinet 100 through the internal ventilation port 130. The waterproof and dustproof performance is reliable, the safety performance is reliable, and the ventilation and heat dissipation performance is good. It effectively prevents moisture from corroding the electrical modules inside the cabinet 100, thus affecting its electrical performance and service life. It can significantly reduce the probability of short circuits in electrical modules; by setting two dehumidification modules inside the ventilation cavity 220, the air in the environment enters from the external ventilation port 210 and comes into contact with the condensing plate 240 when it passes through the condensing channel 241, and the heat is carried away. After the moisture condenses, it falls along the condensing plate 240 and is output from the drain hole 250. This is the second level of moisture-proof dehumidification. When the air passes through the guide channel 231, it is forcibly slowed down and changed direction by the inclined guide plate 230, which can effectively prolong the residence time of the air, so that the liquefied water can be effectively separated from the air under the action of gravity. This is the third level of moisture-proof dehumidification. The multi-level moisture-proof dehumidification structure can effectively maintain the dryness inside the cabinet 100, and the inclined guide plate 230 can effectively block the liquid splashed in the ventilation cavity 220 from reaching the internal ventilation port 130. The moisture-proof dehumidification function is reliable. The meandering and complex labyrinth ventilation path can significantly improve the moisture-proof dehumidification performance. Moreover, the moisture-proof dehumidification can be achieved under natural conditions, without relying on an additional power source, which is energy-saving and environmentally friendly, and the moisture-proof operating cost is low.

[0038] It is understandable that the horizontal projection of the condensing plate 240 is wavy, that is, the condensing plate 240 is a curved plate structure with a wavy cross section that extends along the direction of gravity. This can effectively improve the contact effect between the air and the condensing plate 240, enhance the heat exchange efficiency, and thus effectively improve the heat absorption and cooling effect on the air, and effectively improve the efficiency of water separation and falling after liquefaction.

[0039] In addition, the corrugated structure of the condenser plate 240 can guide the airflow to form turbulence, which can prolong the residence time of air in the condenser channel 241, so that the moisture can be fully condensed and flow down along the surface of the condenser plate 240, further improving the gas-liquid separation efficiency.

[0040] It is understandable that the horizontal projections of all the inclined guide vanes 230 overlap and connect to cover the bottom of the ventilation cavity 220, that is, the horizontal projections of all the inclined guide vanes 230 intersect and connect to form an inclined guide projection, and the inclined guide projection covers the bottom of the ventilation cavity 220, which can effectively ensure the performance of the first dehumidification module.

[0041] The overlapping inclined baffles 230 ensure that the airflow is evenly distributed after entering the ventilation cavity 220, avoiding local airflow that is too fast or too slow, thereby ensuring the overall performance stability of the first dehumidification module. At the same time, the overlapping structure of the inclined baffles 230 can effectively block large external dust particles from entering, improving the dustproof effect.

[0042] It is understood that the acute angle between the inclined guide vane 230 and the horizontal plane is 45° to 60°, preferably 60°. This design ensures that the airflow is evenly distributed after entering the ventilation cavity 220, avoiding local airflow that is too fast or too slow, thereby ensuring the overall performance stability of the first dehumidification module.

[0043] Meanwhile, the overlapping structure of the inclined guide vane 230 can effectively block large dust particles from entering, improving the dustproof effect.

[0044] Understandably, a fan 140 is installed inside the cabinet 100, located on one side of the internal ventilation opening 130. The fan 140 provides an airflow drive source for the cabinet 100, thereby improving airflow efficiency and effectively enhancing heat dissipation. Furthermore, the fan 140's placement inside the cabinet 100 provides moisture protection, preventing direct corrosion from external humid environments and effectively extending its service life. This design is particularly suitable for high humidity or dusty environments, ensuring the long-term stable operation of the electrical cabinet.

[0045] Understandably, the drain hole 250 is shaped like a downward-contracting frustum, meaning it is formed by cutting a cone with the apex facing downwards. The bottom outlet of the downward-contracting drain hole 250 has a small diameter, effectively reducing the probability of dust and liquid entering from the bottom and ensuring reliable drainage. This structure, while guaranteeing reliable drainage, further enhances dust and moisture protection performance.

[0046] Understandably, the protective side cover 200 has a dustproof panel 260 on the side away from the cabinet 100. The dustproof panel 260 is connected to the edge of the external vent 210. The dustproof panel 260 is curved into a curved panel and covers the outside of the external vent 210, which can effectively prevent external dust, insects and other impurities from entering the ventilation cavity 220, while not affecting air circulation. This design significantly improves the dustproof effect while ensuring ventilation efficiency, and is suitable for outdoor or dusty environments.

[0047] Understandably, a junction box 150 is located on the back of the cabinet 100, and the wiring structure 120 is located in the junction box 150. The junction box 150 effectively protects the wiring structure 120 from exposure to humid or dusty environments, thereby improving the stability and reliability of the wiring.

[0048] Specifically, the wiring structure 120 includes multiple terminals for easy electrical connection and maintenance. This design further enhances the overall safety and usability of the electrical installation cabinet.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-level moisture-proof safety electrical installation cabinet, characterized in that, include: The cabinet (100) is connected to a cabinet door (110), and the back of the cabinet door (110) is provided with a wiring structure (120). The cabinet (100) is provided with internal ventilation openings (130) on both sides. Two protective side covers (200) are provided and respectively connected to opposite sides of the cabinet (100). The protective side cover (200) has an external ventilation opening (210) located below the internal ventilation opening (130). A ventilation cavity (220) is provided on the side of the protective side cover (200) near the cabinet (100). The upper and lower parts of the ventilation cavity (220) are respectively connected to the internal ventilation opening (130) and the external ventilation opening (210). A first dehumidification module and a second dehumidification module are provided in the ventilation cavity (220) distributed vertically. The first dehumidification module and the second dehumidification module are both located between the internal ventilation opening (130) and the cabinet (100). Between the external vents (210), the first dehumidification module includes several inclined guide plates (230) spaced apart along the direction of gravity, and a guide channel (231) is formed between each two adjacent inclined guide plates (230). The inclined guide plates (230) form an acute angle with the horizontal plane. The second dehumidification module includes several condensing vertical plates (240) spaced apart along the horizontal direction, and a condensing channel (241) connecting the guide channel (231) is formed between each two adjacent condensing vertical plates (240). The bottom of the protective side cover (200) is provided with a drain hole (250) connecting the ventilation cavity (220).

2. A multi-stage moisture-proof safety electrical installation cabinet according to claim 1, characterized in that, The horizontal projection of the condenser plate (240) is wavy.

3. A multi-stage moisture resistant safety electrical installation cabinet according to claim 1, characterized in that, The horizontal projections of all the inclined guide vanes (230) are connected and cover the bottom of the ventilation cavity (220).

4. A multi-stage moisture resistant safety electrical installation cabinet according to claim 1, characterized in that, The acute angle between the inclined guide plate (230) and the horizontal plane is 45° to 60°.

5. A multi-stage moisture resistant safety electrical installation cabinet according to claim 1, characterized in that, The cabinet (100) is equipped with a fan (140), which is located on one side of the internal ventilation opening (130).

6. A multi-level moisture-proof safety electrical installation cabinet according to claim 1, characterized in that, The drain hole (250) is a truncated cone shape that tapers downwards.

7. A multi-stage moisture resistant safety electrical installation cabinet as claimed in claim 1, wherein, The protective side cover (200) is provided with a dustproof plate (260) on the side away from the cabinet (100), and the dustproof plate (260) is connected to the edge of the external ventilation opening (210).

8. A multi-level moisture-proof safety electrical installation cabinet according to claim 1, characterized in that, A junction box (150) is provided on the back of the cabinet (100), and the wiring structure (120) is located in the junction box (150).

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