Integrated waterproof and dustproof ventilation cover for comprehensive distribution box and installation method

Abstract

The application discloses an integrated waterproof and dustproof ventilation cover for a comprehensive distribution box, which is composed of a ventilation cover body, a sealing element and a hollow layer net plate. The ventilation cover body comprises a mounting frame, a mounting panel, an assembly hole, a waterproof convex strip, a first ventilation hole and a second ventilation hole. The sealing element is a continuous and elastic sealing rubber ring, which is arranged on the inner side edge of the mounting panel to form a mounting groove for accommodating and fixing the hollow layer net plate. The hollow layer net plate is a plate-shaped structure, which is tightly embedded in the mounting groove and has a size matched with that of the mounting groove. The hollow layer net plate is provided with a multi-hole and multi-level ventilation grille structure. The application provides an integrated ventilation cover with compact structure, convenient installation, reliable protection and good ventilation, which realizes the composite functions of a shutter, an insect screen, a water baffle and sealing by a single component, simplifies the production process of the distribution box and improves the reliability and consistency of the product.

Description

Technical Field

[0001] This invention relates to the field of integrated distribution box technology, and in particular to an integrated waterproof and dustproof ventilation cover for integrated distribution boxes and its installation method. Background Technology

[0002] Currently, the common practice for integrated distribution boxes (especially those requiring a P44 protection rating) to achieve ventilation and heat dissipation is to open louvers on the side panels of the box and weld a layer of metal insect-proof mesh inside the box corresponding to the louver positions. Sometimes, additional water-blocking covers are also installed inside or outside to further prevent rainwater intrusion.

[0003] This traditional method has the following obvious disadvantages: 1. Complex process and high cost: It requires multiple processes such as sheet metal louver cutting, mesh welding, and water-blocking plate installation, resulting in low production efficiency; 2. High labor and material costs and unstable protective effect: Welded mesh is prone to detachment or damage due to vibration and corrosion, leading to protective failure; waterproofing loopholes are easily formed at the joints of multiple components; 3. Affects aesthetics and maintenance: The internal welded mesh and additional water-blocking plate affect the cleanliness of the enclosure and are inconvenient for the installation and subsequent maintenance of internal components. A conflict between ventilation and protection: To ensure the protection level, ventilation area is often sacrificed, affecting heat dissipation; conversely, increasing ventilation holes may weaken protective performance.

[0004] Therefore, there is an urgent need for an integrated solution that can simplify the structure, facilitate installation, and reliably guarantee IP44 protection level and good ventilation. Summary of the Invention

[0005] To address the aforementioned technical deficiencies, the present invention provides an integrated ventilation hood that is compact, easy to install, provides reliable protection, and offers good ventilation. This hood achieves the combined functions of louvers, insect screens, water baffles, and sealing in a single component, simplifying the production process of electrical distribution boxes and improving product reliability and consistency.

[0006] To achieve the above objectives, the present invention provides an integrated waterproof and dustproof ventilation cover for a comprehensive distribution box, which is installed at the opening position of the side panel of the outer shell of the comprehensive distribution box; the ventilation cover is composed of a ventilation cover body, a sealing element, and a perforated mesh panel;

[0007] The ventilation hood includes: a mounting frame, a mounting panel, mounting holes, waterproof protrusions, a first ventilation channel, and a second ventilation channel; the mounting frame is sized to match the opening position; the mounting panel is disposed on the mounting frame, forming a raised platform on the plane of the mounting frame, and the size of the mounting panel is smaller than the size of the mounting frame; the mounting holes are disposed at the four corners of the mounting panel, and fasteners pass through the mounting holes to fix the ventilation hood to the opening position; the waterproof protrusions are hollow structures, with a near-arc-shaped structure on the right surface and a stepped structure on the left surface, and there are several waterproof protrusions evenly and parallelly disposed on the mounting panel; the first ventilation channel is disposed on the outer side of the left surface of the waterproof protrusions; the second ventilation channel is disposed on the inner side of the left surface of the waterproof protrusions;

[0008] The sealing element is a continuous, elastic sealing rubber ring, which is set on the inner edge of the mounting panel to form a mounting groove for accommodating and securing the perforated mesh plate.

[0009] The perforated mesh panel is a plate-shaped structure, and its size matches the size of the mounting groove, and it is tightly embedded in the mounting groove; the perforated mesh panel is provided with a multi-hole, multi-level ventilation grille structure.

[0010] Preferably, the ventilation grille structure includes a main ventilation duct and a secondary micropore array; the main ventilation duct is composed of multiple parallel longitudinal or transverse channels with a preset depth and width; the secondary micropore array is disposed on the ribs or sidewalls of the main ventilation duct.

[0011] Preferably, the secondary micropore array consists of a large number of tiny air pores at the micrometer or millimeter level.

[0012] Preferably, both the first ventilation channel and the second ventilation channel are parallel strip-shaped groove structures; the first ventilation channel is located on the outer side of the first surface of the stepped structure, and the second ventilation channel is located on the inner side of the second surface of the stepped structure; the first ventilation channel and the second ventilation channel are staggered.

[0013] Preferably, the ventilation hood is made of polypropylene and is integrally injection molded.

[0014] Preferably, in the arc-shaped structure on the right surface of the waterproof protrusion, the angle of the arc portion is 90°, and the corresponding radius is set to 8mm-20mm.

[0015] Preferably, the step height difference of the stepped structure is set to 1mm-3mm.

[0016] To achieve the above objectives, the present invention also provides an installation method for an integrated waterproof and dustproof ventilation cover, wherein the integrated waterproof and dustproof ventilation cover is composed of the aforementioned integrated waterproof and dustproof ventilation cover for a comprehensive power distribution box, and its installation process includes the following steps:

[0017] S1: The outer casing side panel of the integrated distribution box has an opening position according to standard operation;

[0018] S2: Align the mounting frame and mounting panel of the ventilation hood with the inside of the opening, so that the assembly hole is aligned with the preset threaded hole position of the integrated power distribution box;

[0019] S3: The sealing element is positioned along the inner edge of the mounting panel;

[0020] S4: Align the perforated mesh panel with and press it into the mounting groove of the ventilation hood to ensure it is securely fastened in place;

[0021] S5: Using fasteners that pass through the mounting holes and threaded holes, tighten and fix the ventilation cover to the side plate of the integrated power distribution box, and the installation is complete.

[0022] Compared with existing technologies, the advantages of this invention are as follows: 1. High product integration and simplified production: The ventilation, filtration, waterproofing, and sealing functions are integrated into a single PP injection-molded component, eliminating multiple processes such as welding mesh, adding independent water baffles, and applying sealant. This greatly simplifies the assembly process of the distribution box, improves production efficiency and consistency, and reduces overall costs. 2. High and reliable protection level: Through the combination of a "multi-level spiral ventilation structure" and a "compression-type sealing rubber ring," the contradiction between ventilation and protection is scientifically coordinated. It can reliably meet or even exceed the IP44 protection level (splash protection, protection against solid foreign objects with a diameter greater than 1mm) requirements, and avoids the drawbacks of easily damaged welded mesh. 3. Good ventilation and heat dissipation effect: The PP material has a low thermal conductivity, reducing heat conduction inside and outside the box; the carefully designed hollow structure provides a larger effective ventilation area under the premise of effective protection, with low airflow resistance, which is conducive to natural convection heat dissipation. 4. Extremely simple installation and maintenance: Installation can be completed with only 4 nuts, and single-person operation is quick and simple. The modular design makes disassembly and replacement or cleaning convenient in the future. 5. Aesthetically pleasing and neat: The ventilation hood is installed inside the enclosure, making the inner wall of the enclosure flat and aesthetically pleasing, without exposed mesh or messy baffles, which facilitates the arrangement and wiring of other electrical components inside the enclosure, and also facilitates daily inspection and maintenance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 An exploded view of the integrated waterproof and dustproof ventilation hood provided in an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of the ventilation hood provided in an embodiment of the present invention;

[0026] Figure 3 A cross-sectional view of the perforated mesh plate provided in an embodiment of the present invention;

[0027] Figure 4 The left view of the ventilation hood provided in an embodiment of the present invention. Detailed Implementation

[0028] 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, not all, of the embodiments of the present invention. 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.

[0029] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inside," "outside," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this invention, and not for limiting this invention.

[0030] See Figures 1 to 4 The present invention provides an integrated waterproof and dustproof ventilation cover for a comprehensive distribution box, which is installed at the opening position of the side panel of the outer shell of the comprehensive distribution box; the ventilation cover is an independently installable modular component, which is composed of a ventilation cover body 1, a sealing element 2, and a hollow mesh plate 3; it is integrally injection molded from polypropylene material.

[0031] See Figure 1 , Figure 2 and Figure 4The ventilation hood 1 is a rectangular or square frame structure with a border, and its outer side forms a mounting plane that fits against the mounting surface of the integrated distribution box. Specifically, the ventilation hood 1 includes: a mounting frame 11, a mounting panel 12, mounting holes 13, a waterproof protrusion 14, a first ventilation channel 15, and a second ventilation channel 16. The dimensions of the mounting frame 11 match the opening position, and after installation, the corresponding structure is hidden inside the integrated distribution box. The mounting panel 12 is disposed on the mounting frame 11, forming a raised platform on the plane of the mounting frame 11 (the raised portion faces inward relative to the integrated distribution box), and the size of the mounting panel 12 is smaller than the size of the mounting frame 11. The mounting holes 13 are disposed at the four corners of the mounting panel 12, and the ventilation hood 1 is fixedly installed on the inner side of the opening position by fasteners passing through the mounting holes 13.

[0032] See Figure 2 The waterproof protrusion 14 is a hollow structure with a near-arc-shaped right surface and a stepped left surface. The arc-shaped portion of the right surface of the waterproof protrusion 14 has an angle of 90°, and its corresponding radius is set to 8mm-20mm. The radius directly determines the arc length, which in turn determines the overall dimensions, curvature, material usage, and waterproof resistance. A smaller radius results in less material usage and higher waterproof performance, but also increases processing difficulty. Therefore, a radius of 10mm is preferred in this embodiment. The step height difference of the stepped structure is set to 1mm-3mm. The step height difference affects waterproof performance and the shape and dimensions of the second ventilation channel 16. A larger step height difference results in more material usage and higher waterproof performance, but also increases processing difficulty. Therefore, a height difference of 2mm is preferred in this embodiment.

[0033] In this embodiment, the number of waterproof protrusions 14 is several, evenly and parallelly arranged on the mounting panel 12. In the illustrated example, the number of waterproof protrusions 14 is 10, taking into account factors such as cost, processing conditions, and waterproof performance.

[0034] See Figure 4 The first ventilation channel 15 is disposed on the outer side of the left surface of the waterproof protrusion 14; the second ventilation channel 16 is disposed on the inner side of the left surface of the waterproof protrusion 14. Specifically, both the first ventilation channel 15 and the second ventilation channel 16 are parallel strip-shaped groove structures; the first ventilation channel 15 is disposed on the outer side of the first surface of the stepped structure, and the second ventilation channel 16 is disposed on the inner side of the second surface of the stepped structure; the first ventilation channel 15 and the second ventilation channel 16 are staggered. This staggered, labyrinthine arrangement achieves both ventilation and waterproofing.

[0035] In this embodiment, the sealing element 2 is a continuous, elastic sealing rubber ring, disposed on the inner edge of the mounting panel 12 (the inner edge of the inner side is recessed towards the interior of the integrated distribution box), forming a mounting groove for accommodating and securing the perforated mesh plate 3. When the ventilation hood is fastened to the integrated distribution box by screws or other fasteners, the fastening force of the fasteners causes the sealing element 2 to be pressed against the inner edge of the mounting panel 12, achieving a reliable seal between the ventilation hood 11 and the sheet metal of the integrated distribution box.

[0036] See Figure 1 and Figure 3 The perforated mesh plate 3 is a plate-like structure, its dimensions matching the dimensions of the mounting groove, and it is tightly fitted into the mounting groove. The perforated mesh plate is provided with a porous, multi-level ventilation grille structure. Specifically, the ventilation grille structure includes a main ventilation duct 31 and a secondary microporous array 32. The main ventilation duct 31 consists of multiple parallel longitudinal or transverse channels with preset depths and widths, forming the main ventilation path and the first-level airflow guiding and water-blocking structure. The preset depth of the main ventilation duct can be set to 1mm-5mm, the preset width can be 1mm-5mm, and the preset length can be 10mm-40mm. The specific depth, width, and length can be adjusted according to actual conditions. The secondary microporous array 32 is disposed on the ribs or sidewalls of the main ventilation duct, and the secondary microporous array 32 consists of a large number of micron or millimeter-sized fine air pores, forming a second-level ventilation and filtration structure. This multi-level, labyrinthine structure of "large channels + micropore array" allows air to flow smoothly, while water droplets, dust, and insects are blocked by multiple barriers, changes in flow direction, and surface tension, thus achieving a high degree of integration of the three functions of "ventilation, dust prevention, and waterproofing".

[0037] The above implementation method eliminates several steps, such as welding mesh, installing independent water baffles, and applying sealant, greatly simplifying the assembly process of the distribution box, improving production efficiency and consistency, and reducing overall costs. Furthermore, the combination of a "multi-level, layered ventilation structure" and a "compression-type sealing rubber ring" scientifically coordinates the conflict between ventilation and protection, stably meeting or even exceeding IP44 protection requirements. In addition, the low thermal conductivity of PP material reduces heat transfer between the inside and outside of the box; the carefully designed perforated structure provides a larger effective ventilation area while maintaining effective protection, with low airflow resistance, facilitating natural convection heat dissipation.

[0038] To achieve the above objectives, the present invention also provides an installation method for an integrated waterproof and dustproof ventilation cover, wherein the integrated waterproof and dustproof ventilation cover is composed of the aforementioned integrated waterproof and dustproof ventilation cover for a comprehensive power distribution box, and its installation process includes the following steps:

[0039] S1: The outer casing side panel of the integrated distribution box is opened according to standard procedures.

[0040] In this step, the location of the opening is the same as that of the conventional process for opening louver holes, and will not be described in detail here.

[0041] S2: Align the mounting frame and mounting panel of the ventilation hood with the inside of the opening, so that the mounting hole is aligned with the pre-set threaded hole position of the integrated power distribution box.

[0042] S3: The seal is positioned along the inner edge of the mounting panel.

[0043] In this step, the sealing element is a continuous, elastic rubber sealing ring.

[0044] S4: Align the perforated mesh plate 3 with and press it into the mounting groove of the ventilation hood 11 to ensure that it is securely fastened in place.

[0045] In this step, when the ventilation hood is fastened to the integrated distribution box by screws and other fasteners, the sealing element 2 is compressed. Therefore, after the perforated mesh plate 3 is installed and secured, it can form a reliable seal between the ventilation hood body 11 and the sheet metal of the integrated distribution box, achieving static waterproofing and dustproofing.

[0046] S5: Using fasteners that pass through the mounting hole 13 and the threaded hole, tighten and fix the ventilation cover to the side plate of the integrated power distribution box, and the installation is complete.

[0047] In this step, after the ventilation hood is installed, the entire ventilation hood is located inside the integrated distribution box. It has a flat appearance, with only the shape of the waterproof protrusion visible on the outside, similar to the original louver structure of the integrated distribution box. The inside is an integrated ventilation module, which integrates ventilation, filtration, waterproofing, sealing and aesthetic functions.

[0048] In this embodiment, the integrated waterproof and dustproof ventilation cover for the integrated distribution box is extremely easy to install and maintain, requiring only four screws and nuts to complete the installation, making the operation quick and simple. The modular design also makes future replacement, cleaning, and disassembly equally convenient. Furthermore, the ventilation cover is installed inside the box, without exposed mesh or cluttered baffles, facilitating the arrangement and wiring of other electrical components within the box, and further aiding in daily inspection and maintenance.

[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0050] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An integrated waterproof and dustproof ventilation cover for a comprehensive distribution box, installed at the opening position of the side panel of the outer shell of the comprehensive distribution box; characterized in that, The ventilation hood consists of a ventilation hood body, sealing components, and a perforated mesh panel; The ventilation hood includes: a mounting frame, a mounting panel, mounting holes, waterproof protrusions, a first ventilation channel, and a second ventilation channel; the mounting frame is sized to match the opening position; the mounting panel is disposed on the mounting frame, forming a raised platform on the plane of the mounting frame, and the size of the mounting panel is smaller than the size of the mounting frame; the mounting holes are disposed at the four corners of the mounting panel, and fasteners pass through the mounting holes to fix the ventilation hood to the opening position; the waterproof protrusions are hollow structures, with a near-arc-shaped structure on the right surface and a stepped structure on the left surface, and there are several waterproof protrusions evenly and parallelly disposed on the mounting panel; the first ventilation channel is disposed on the outer side of the left surface of the waterproof protrusions; the second ventilation channel is disposed on the inner side of the left surface of the waterproof protrusions; The sealing element is a continuous, elastic sealing rubber ring, which is set on the inner edge of the mounting panel to form a mounting groove for accommodating and securing the perforated mesh plate. The perforated mesh panel is a plate-shaped structure, and its size matches the size of the mounting groove, and it is tightly embedded in the mounting groove; the perforated mesh panel is provided with a multi-hole, multi-level ventilation grille structure.

2. The integrated waterproof and dustproof ventilation cover for a comprehensive power distribution box according to claim 1, characterized in that, The ventilation grille structure includes a main ventilation duct and a secondary micropore array; the main ventilation duct is composed of multiple parallel longitudinal or transverse channels with preset depth and width; the secondary micropore array is disposed on the ribs or sidewalls of the main ventilation duct.

3. The integrated waterproof and dustproof ventilation cover for a comprehensive power distribution box according to claim 2, characterized in that, The secondary micropore array consists of a large number of tiny air pores at the micrometer or millimeter level.

4. The integrated waterproof and dustproof ventilation cover for a comprehensive distribution box according to claim 1, characterized in that, Both the first ventilation channel and the second ventilation channel are parallel strip-shaped groove structures; the first ventilation channel is located on the outer side of the first surface of the stepped structure, and the second ventilation channel is located on the inner side of the second surface of the stepped structure; the first ventilation channel and the second ventilation channel are staggered.

5. The integrated waterproof and dustproof ventilation cover for a comprehensive distribution box according to claim 1, characterized in that, The ventilation hood is made of polypropylene and is integrally injection molded.

6. The integrated waterproof and dustproof ventilation cover for a comprehensive power distribution box according to claim 1, characterized in that, In the arc-shaped structure on the right surface of the waterproof protrusion, the angle of the arc portion is 90°, and the corresponding radius is set to 8mm-20mm.

7. The integrated waterproof and dustproof ventilation cover for a comprehensive distribution box according to claim 1, characterized in that, The step height difference of the stepped structure is set to 1mm-3mm.

8. A method for installing an integrated waterproof and dustproof ventilation hood, characterized in that, The integrated waterproof and dustproof ventilation cover is constructed from any one of the integrated waterproof and dustproof ventilation covers for integrated distribution boxes as claimed in claims 1-7, and its installation process includes the following steps: S1: The outer casing side panel of the integrated distribution box is opened according to standard procedures; S2: Align the mounting frame and mounting panel of the ventilation hood with the inside of the opening, so that the assembly hole is aligned with the preset threaded hole position of the integrated power distribution box; S3: The sealing element is positioned along the inner edge of the mounting panel; S4: Align the perforated mesh panel with and press it into the mounting groove of the ventilation hood to ensure it is securely fastened in place; S5: Using fasteners that pass through the mounting holes and threaded holes, tighten and fix the ventilation cover to the side plate of the integrated power distribution box to complete the installation process.

Images