A dustproof and moistureproof shell of a high-power photovoltaic module adaptive inverter

Abstract

The utility model discloses a high -power photovoltaic module adaptation type dustproof and moistureproof shell of inverter belongs to photovoltaic inverter technical field, and this shell includes protective shell and apron, and the inside of apron is connected with the protection mechanism through the hinge and can open and close, the fixed frame of this mechanism is equipped with dust screen and the double -layer filtration of the formation of the expanded body polytetrafluoroethylene film, and by fan forced ventilation heat dissipation, the quick and stable connection of the installation mechanism that constitutes by the card board, bolt and connecting plate is realized between apron and apron. The utility model effectively solved the technical contradiction that high protection level and high -efficient heat dissipation performance are difficult to take into account, and simultaneously its unique open and close type protection mechanism and quick installation mechanism make the maintenance of filtering part and the overall dismounting of shell convenient and reliable, and the operating stability and maintenance efficiency of inverter under the harsh environment have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter. Background Technology

[0002] Photovoltaic inverters are the core equipment in solar power generation systems. Their main function is to convert the direct current generated by photovoltaic modules into alternating current and feed it into the power grid. Since photovoltaic power plants are usually built outdoors, inverters, as key equipment, are exposed to the natural environment for a long time and must withstand various harsh weather conditions such as wind, sand, rain, snow, and humidity. Therefore, designing a high-protection-level housing for the inverter to ensure that its delicate electronic components are protected from dust and moisture is the foundation for ensuring the long-term stable operation of the entire photovoltaic system.

[0003] With the continuous development of photovoltaic technology, the power density of inverters is getting higher and higher. Especially in the application scenarios of high-power photovoltaic modules, inverters generate a lot of heat when converting electrical energy. If this heat cannot be dissipated in a timely and effective manner, it will lead to excessively high internal temperature of the equipment. This will not only seriously affect the conversion efficiency of the inverter, but also accelerate the aging of components, and even cause equipment failure and shorten its service life. This puts forward stringent requirements on the heat dissipation performance of the casing.

[0004] However, there is an inherent technical contradiction between high-standard protective performance and efficient heat dissipation performance. To achieve excellent dust and moisture protection, the casing usually needs to be designed to be as airtight as possible. However, this will severely hinder the air convection between the inside and outside, making it difficult for internal heat to dissipate. Conversely, if too many ventilation openings are set to enhance heat dissipation, it will greatly increase the risk of external dust and moisture intrusion, reducing the protection level of the casing. Although some casings in the existing technology are equipped with filters, the simple natural ventilation heat dissipation effect is limited in high-power application scenarios, and the filters are also prone to failure due to dust blockage, resulting in a sharp drop in heat dissipation capacity. In addition, when these filter components need to be cleaned or replaced, it is often necessary to disassemble most of the casing structure. The operation process is cumbersome, time-consuming and labor-intensive, which brings great inconvenience to on-site operation and maintenance.

[0005] Therefore, this utility model proposes a dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems in the existing technology of dustproof and moisture-proof housings for high-power photovoltaic module-compatible inverters, which are difficult to balance high protection level and efficient heat dissipation performance, as well as the complex, time-consuming and labor-intensive maintenance and disassembly of filter components, this utility model aims to provide a high-power photovoltaic module-compatible inverter dustproof and moisture-proof housing with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter, including a protective housing and a cover plate; a protective mechanism disposed inside the cover plate; an installation mechanism for connecting the cover plate and the protective housing; and a fan disposed on the protective housing.

[0008] The protective mechanism includes a hinge rotatably connected to the cover plate and a fixing frame connected to the hinge. The fixing frame is provided with a dustproof net and an expanded polytetrafluoroethylene membrane.

[0009] Furthermore, the protective mechanism is rotatably mounted on the inner side of the cover plate via the hinge, and the mounting mechanism is used to detachably fix the cover plate to the opening of the protective shell. The fan is connected to the interior of the protective shell to form a heat dissipation duct.

[0010] Preferably, a screw is threaded to the rear side of the hinge to fix the rotation state of the hinge.

[0011] Preferably, a fixing block is provided at the bottom rear side of the cover plate, a baffle is rotatably connected to the front side of the fixing block, and a screw is threadedly connected to the left rear side of the baffle. The end of the screw cooperates with the fixing block to constrain the position of the fixing frame.

[0012] Preferably, the dustproof net is located on the outside of the expanded polytetrafluoroethylene membrane, forming a gradient filtration structure from the outside to the inside.

[0013] Preferably, the mounting mechanism includes a mounting block fixed to the protective shell and having a through hole, and a clamping plate fixed to the cover plate and capable of penetrating the through hole of the mounting block.

[0014] Furthermore, the mounting mechanism also includes a bolt, which is threaded onto the side of the clamping plate away from the mounting block, and its end contacts the outer wall of the mounting block to achieve locking.

[0015] Furthermore, the mounting mechanism also includes a connecting plate that passes through a plurality of adjacent bolts to restrict the rotation of the bolts to prevent loosening.

[0016] Preferably, the fan is mounted on the side of the protective housing, and its air outlet communicates with the interior of the protective housing.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem that existing inverter housings, when achieving high-level dust and moisture protection, cannot effectively dissipate internal heat due to excessive sealing. By setting a double-layer filtration structure consisting of a dustproof mesh and an expanded polytetrafluoroethylene membrane inside the protective shell, and cooperating with a fan for active ventilation and heat dissipation, it achieves the dual purpose of effectively preventing dust and moisture intrusion while ensuring the heat dissipation effect required for stable operation of high-power inverters, significantly improving the reliability of the equipment in harsh environments.

[0018] 2. This utility model solves the problem in the prior art that the filter components need to be disassembled when maintaining and replacing the filter components, which is complicated, time-consuming and labor-intensive. It solves the problem that the filter components need to be disassembled when maintaining and replacing the filter components by hinged fixing bracket inside the cover plate and locked by screws and baffles. It achieves the technical effect of quickly opening the protective mechanism without disassembling the cover plate and protective shell, and conveniently inspecting or replacing the internal dust screen and expanded polytetrafluoroethylene membrane, which greatly improves maintenance efficiency.

[0019] 3. This utility model, by adopting an installation mechanism consisting of an installation block, a clamping plate, bolts, and a connecting plate, solves the problems of difficult installation alignment, cumbersome tightening operation, and easy loosening under long-term vibration in traditional bolt fixing methods. It achieves the technical effects of rapid positioning, convenient tightening, and reliable anti-loosening effect, simplifies the overall installation and disassembly process of the shell, and enhances the long-term stability of the structural connection. Attached Figure Description

[0020] Figure 1 A perspective view of a dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter proposed in this utility model; Figure 2 This is a split view of the cover plate of the dustproof and moisture-proof housing of a high-power photovoltaic module-compatible inverter proposed in this utility model; Figure 3 This is a split view of the dustproof mesh in the dustproof and moisture-proof housing of a high-power photovoltaic module-compatible inverter proposed in this utility model; Figure 4 This is an exploded view of the mounting mechanism in the dustproof and moisture-proof housing of a high-power photovoltaic module-compatible inverter proposed in this utility model.

[0021] Legend: 1. Protective shell; 2. Cover plate; 3. Protective mechanism; 31. Hinge; 32. Screw 1; 33. Fixing bracket; 34. Dustproof net; 35. Expanded PTFE membrane; 36. Fixing block; 37. Baffle; 38. Screw 2; 39. Fan; 4. Mounting mechanism; 41. Mounting block; 42. Connecting block; 43. Clamping plate; 44. Bolt; 45. Connecting plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0023] Please refer to Figures 1 to 4 This utility model provides a dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter. It aims to solve the problems in the prior art where, while the inverter housing is highly dustproof and moisture-proof, it is difficult to effectively dissipate a large amount of internal heat, and the maintenance of filter components and the overall disassembly and assembly of the housing are complicated.

[0024] like Figure 1 and Figure 2 As shown, the dustproof and moisture-proof housing for the high-power photovoltaic module-compatible inverter includes a protective shell 1 and a cover plate 2 detachably connected to the opening of the protective shell 1. The protective shell 1 serves as the mounting base for the entire device, accommodating internal components such as the inverter. The cover plate 2 acts as the opening cover for the protective shell 1, and integrates core components for dustproofing, moisture protection, and heat dissipation.

[0025] To solve the aforementioned technical problems, the core of the technical solution in this embodiment lies in the fact that the dustproof and moisture-proof housing of the high-power photovoltaic module-compatible inverter also includes a protective mechanism 3, a mounting mechanism 4, and a fan 39. The protective mechanism 3 and the mounting mechanism 4 form a specific structural fit and connection relationship with the aforementioned protective shell 1 and cover plate 2.

[0026] Please refer to the following carefully. Figure 1 , Figure 2 and Figure 3 The core structure will be described in detail below: The protective mechanism 3 is located inside the cover plate 2. Its main components include hinges 31, screw 32, a fixing frame 33, a dustproof mesh 34, an expanded polytetrafluoroethylene (ePTFE) membrane 35, a fixing block 36, a baffle 37, and screw 38. There are two hinges 31, installed on the top rear side of the cover plate 2, ensuring a secure connection between the hinges 31 and the cover plate 2, allowing the protective mechanism 3 to be rotatably connected to the cover plate 2. Screw 32 is threaded onto the rear side of each of the two hinges 31, fixing the rotational state of the hinges 31 and thus locking the opening / closing position of the protective mechanism 3. The bottom of both hinges 31 is fixedly connected to the same fixing frame 33, allowing the fixing frame 33 to move synchronously with the rotation of the hinges 31. The dustproof mesh 34 and the ePTFE membrane 35 are fixedly connected inside the fixing frame 33, with the dustproof mesh 34 on the outside and the ePTFE membrane 35 on the inside, forming a double-layer filtration structure that provides a highly efficient dust and moisture barrier.

[0027] Meanwhile, two fixing blocks 36 are fixed to the rear bottom of the cover plate 2. The front side of the right fixing block 36 is rotatably connected to the baffle 37, and the rear left end of the baffle 37 is threadedly connected to the screw 38. The fixing block 36, the baffle 37, and the screw 38 together form a fixing assembly. This assembly is in close contact with the left fixing block 36 through the end of the screw 38. Its function is to constrain the bottom position of the fixing frame 33 and ensure the stability and sealing of the protective mechanism 3 when it is closed.

[0028] For the settings of fan 39, please refer to Figure 1 The fan 39 is installed at a predetermined position on the side of the protective housing 1, ensuring that the air outlet of the fan 39 is connected to the interior of the protective housing 1. The function of the fan 39 is to drive the airflow inside the protective housing 1, and to exhaust the heat generated by the operation of the internal components to the outside through the filter structure of the mounting bracket 33, thereby achieving forced ventilation and heat dissipation.

[0029] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to achieve a secure and convenient installation and removal between the cover plate 2 and the protective shell 1, please refer to the following: Figure 1 and Figure 4 The mounting mechanism 4 includes a mounting block 41, a connecting block 42, a clamping plate 43, bolts 44, and a connecting plate 45. The mounting block 41 is fixed to the upper and lower front ends of the protective shell 1, and the mounting block 41 is provided with through holes. The rear sides of both the upper and lower sides of the cover plate 2 are fixed with connecting blocks 42, and the clamping plate 43 extends from the connecting blocks 42. The clamping plate 43 is designed to pass through the through holes of the mounting block 41.

[0030] As a further improvement to the mounting mechanism 4, in order to achieve reliable locking, bolts 44 are threadedly connected to the side of each clamping plate 43 away from the mounting block 41. The end of the bolt 44 contacts the outer wall of the mounting block 41, and the cover plate 2 and the protective shell 1 are stably connected through the threaded fastening action.

[0031] As a further optimization of the mounting mechanism 4, in order to prevent the bolts 44 from loosening during long-term use or under vibration, the mounting mechanism 4 also includes two connecting plates 45, each of which passes through multiple adjacent bolts 44. The rotation of the bolts 44 is restricted by the lateral constraint of the connecting plates 45.

[0032] As a preferred embodiment, in order to ensure that the opening and closing action of the protective mechanism 3 is accurate and reliable, a screw 32 is threadedly connected to the rear side of the hinge 31. By tightening or loosening the screw 32, the rotation state of the hinge 31 can be fixed or released.

[0033] In another preferred embodiment, to ensure the stability of the protective mechanism 3 in the closed state, in addition to fixing its top with hinge 31 and screw 32, the bottom of the fixing frame 33 is also constrained by fixing block 36, baffle 37 and screw 38 located at the bottom rear side of cover plate 2. Baffle 37 is rotatably connected to fixing block 36 on the right side, and its left end contacts fixing block 36 on the left side. The end of screw 38, which is threaded to the left rear side of baffle 37, is in close contact with fixing block 36 on the left side, thereby locking the bottom of the fixing frame 33.

[0034] As a preferred embodiment, in order to achieve better dust and moisture protection, the dustproof net 34 inside the fixing frame 33 is located outside the expanded polytetrafluoroethylene membrane 35, forming a gradient filtration structure from the outside to the inside.

[0035] In a preferred embodiment, to achieve efficient heat dissipation, the fan 39 is mounted on the side of the protective housing 1, with its air outlet communicating with the interior of the protective housing 1 to form a forced convection heat dissipation airflow channel.

[0036] Working principle: Two hinges 31 are installed on the top rear side of the cover plate 2 to ensure that the hinges 31 are firmly connected to the cover plate 2; screws 32 are threaded to the rear side of the two hinges 31 to fix the rotation state of the hinges 31; the bottom of the two hinges 31 is fixedly connected to the same fixing frame 33 so that the fixing frame 33 can move synchronously with the rotation of the hinges 31; a dustproof net 34 and an expanded polytetrafluoroethylene membrane 35 are fixedly connected inside the fixing frame 33, with the dustproof net 34 on the outside and the expanded polytetrafluoroethylene membrane 35 on the inside, forming a double-layer filter structure; two fixing blocks 36 are fixed at the bottom rear side of the cover plate 2, and a baffle 37 is rotatably connected to the front side of the right fixing block 36. Screws 38 are threaded to the left rear side of the baffle 37, so that the fixing block 36, the baffle 37, and the screws 38 form a fixing assembly to constrain the position of the fixing frame 33. At the same time, the fan 39 is installed at a preset position on the side of the protective shell 1 to ensure that the air outlet of the fan 39 is connected to the inside of the protective shell 1. Rotate the cover plate 2 so that it covers the opening of the protective shell 1; rotate the fixing bracket 33 simultaneously so that it fits against the inner side of the cover plate 2; rotate the baffle 37 so that it rotates around the right fixing block 36 until the left end of the baffle 37 contacts the left fixing block 36; tighten the screw 38 on the left side of the rear side of the baffle 37 so that the end of the screw 38 is in close contact with the left fixing block 36; tighten the screw 32 on the rear side of the hinge 31 to fix the rotation angle of the hinge 31. Fix the bottom of the fixing bracket 33 by the cooperation of the fixing block 36, the baffle 37, and the screw 38, and fix the top of the fixing bracket 33 by the cooperation of the hinge 31 and the screw 32. So that the fixing bracket 33 and the internal dustproof net 34 and expanded polytetrafluoroethylene film 35 are stably installed on the cover plate 2, and the protective mechanism 3 is closed. With the protective mechanism 3 closed, dust filtration and ventilation / heat dissipation operations are performed: When outside air enters the protective shell 1, it first passes through the dustproof net 34 inside the fixed frame 33, which blocks larger particles and impurities in the air; the filtered air continues to pass through the expanded polytetrafluoroethylene membrane 35, which further filters fine particles and water vapor, allowing clean and dry air to enter the protective shell 1. The fan 39 is then activated, causing airflow inside the protective shell 1. The fan 39 dissipates the heat generated by the internal components through the filtration structure of the fixed frame 33, achieving ventilation and heat dissipation. The double-layer filtration of the dustproof net 34 and the expanded polytetrafluoroethylene membrane 35 prevents impurities and water vapor from entering the protective shell 1; the airflow driven by the fan 39 ensures effective heat dissipation inside the protective shell 1. After assembly, proceed with the installation of the protective shell 1 and the cover plate 2: push the cover plate 2 closer to the protective shell 1, so that the retaining plate 43 on the rear side of the connecting block 42 on the upper and lower sides of the cover plate 2 is aligned with the through hole of the mounting block 41 on the upper and lower front sides of the protective shell 1; continue to push the cover plate 2, so that the retaining plate 43 completely penetrates the through hole of the mounting block 41; thread bolts 44 on the opposite side of each retaining plate 43 until the end of the bolt 44 contacts the outer wall of the mounting block 41; pass two connecting plates 45 through the adjacent bolts 44 respectively, restrict the rotation of the bolts 44 through the connecting plates 45, and achieve a stable connection between the cover plate 2 and the protective shell 1 through the cooperation of the retaining plate 43 and the mounting block 41, the fastening effect of the bolts 44, and the lateral constraint of the connecting plate 45, thus completing the overall installation of the device; When maintenance or replacement of the filter components inside the protective housing 1 is required, and when it is necessary to separate the cover plate 2 from the protective housing 1, the following disassembly operations are performed on the mounting mechanism 4: Remove the two connecting plates 45 that pass through multiple bolts 44; loosen the bolts 44 on the opposite side of each clamping plate 43, so that the bolts 44 are separated from the mounting block 41; pull the cover plate 2, so that the clamping plate 43 is pulled out from the through hole of the mounting block 41, thereby separating the cover plate 2 from the protective housing 1; loosen the screw 38 on the left side of the rear of the baffle 37, so that the screw 38 is separated from the left side of the baffle 37. Separate the side fixing block 36; rotate the baffle 37 to release the constraint of the baffle 37 on the bottom of the fixing frame 33; loosen the screw 32 on the rear side of the hinge 31 to restore the hinge 31's rotation ability; rotate the cover plate 2 around the hinge 31 to drive the fixing frame 33, dustproof net 34, and expanded polytetrafluoroethylene membrane 35 to rotate synchronously, opening the opening of the protective shell 1; if the filter components need to be replaced, directly remove the dustproof net 34 and expanded polytetrafluoroethylene membrane 35 inside the fixing frame 33, replace the new components, and then re-fix them in the reverse order.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter, comprising a protective housing (1) and a cover plate (2), wherein the cover plate (2) is detachably connected to the opening of the protective housing (1); Its features are, The inner side of the cover plate (2) is provided with a protective mechanism (3), which includes a hinge (31) and a fixing frame (33). The hinge (31) is rotatably connected to the cover plate (2), and the fixing frame (33) is connected to the hinge (31) and has a dustproof net (34) and an expanded polytetrafluoroethylene film (35) inside. The outer casing also includes a mounting mechanism (4) for connecting the cover plate (2) and the protective shell (1); The protective shell (1) is also equipped with a fan (39).

2. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 1, characterized in that, The hinge (31) is threaded with a screw (32) on its rear side to fix the rotation state of the hinge (31).

3. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 1, characterized in that, The bottom rear side of the cover plate (2) is provided with a fixing block (36), and the front side of the fixing block (36) is rotatably connected with a baffle (37). The left rear side of the baffle (37) is threaded with a screw (38), and the end of the screw (38) cooperates with the fixing block (36) to constrain the position of the fixing frame (33).

4. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 1, characterized in that, The dustproof net (34) is located on the outside of the expanded polytetrafluoroethylene film (35).

5. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 1, characterized in that, The installation mechanism (4) includes an installation block (41) and a clamping plate (43). The installation block (41) is fixed to the protective shell (1) and has a through hole. The clamping plate (43) is fixed to the cover plate (2) and can pass through the through hole of the installation block (41).

6. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 5, characterized in that, The mounting mechanism (4) further includes a bolt (44) which is threaded onto the side of the clamping plate (43) away from the mounting block (41), and the end of the bolt (44) contacts the outer wall of the mounting block (41).

7. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 6, characterized in that, The mounting mechanism (4) further includes a connecting plate (45) that passes through a plurality of adjacent bolts (44) to restrict the rotation of the bolts (44).

8. The dustproof and moisture-proof housing for a high-power photovoltaic module-compatible inverter according to claim 1, characterized in that, The fan (39) is installed on the side of the protective shell (1), and its air outlet is connected to the inside of the protective shell (1).

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