Photovoltaic grid-connected inverter cabinet dehumidification and moisture-proof structure

Abstract

The utility model discloses a dehumidification and moisture-proof structure of a photovoltaic grid-connected inverter cabinet, and belongs to the field of inverter installation position dehumidification. The utility model relates to a dehumidifying and moisture-proof structure of a photovoltaic grid-connected inverter cabinet, which comprises a cabinet shell, and a sealing door plate is arranged at the front end outside the cabinet shell. Four inverter mounting racks are longitudinally arranged in the first storage cavity, one sides of the exteriors of the four inverter mounting racks are welded and fixed with the interior of the cabinet shell, first shunting pipelines are arranged in the first storage cavity in an array manner, and bent exhaust pipes are arranged at one ends of the exteriors of the first shunting pipelines. According to the cabinet dehumidification and moisture-proof structure, the problem that the extraction position of internal gas of an existing cabinet dehumidification and moisture-proof structure is fixed is solved, the orientation of the bent exhaust pipe is adjusted according to the installation position and the fixing position, and the angle and orientation of internal gas extraction are preliminarily adjusted; and gas can be extracted from a plurality of internal corners through the plurality of bent gas extraction pipes in the array.

Description

Technical Field

[0001] This utility model relates to the field of dehumidification of inverter installation locations, specifically a dehumidification and moisture-proof structure for photovoltaic grid-connected inverter cabinets. Background Technology

[0002] An inverter is a converter that transforms direct current (DC) power into constant frequency and voltage or frequency and voltage adjustable alternating current (AC). It consists of an inverter bridge, control logic, and filter circuits. It is widely used in air conditioners, home theaters, electric grinders, power tools, sewing machines, DVDs, VCDs, computers, televisions, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting, etc. When an inverter is placed in a certain location for a long time, an inverter cabinet needs to be installed outside the inverter to avoid the installation environment being too humid, which could cause the inside of the equipment to become damp and rust.

[0003] Chinese Patent Publication No. CN217334673U discloses a dustproof and dehumidifying structure for a distribution box, including a distribution box body and a dustproof and dehumidifying structure. The dustproof and dehumidifying structure is installed on the distribution box body. The dustproof and dehumidifying structure includes: a ventilation component, a dehumidifying component, and a dustproof component. The ventilation component is installed on the distribution box, the dehumidifying component is installed on the ventilation component, and the dustproof component is installed on the ventilation component. This utility model relates to the field of distribution box technology and has the following beneficial effects: the structure is simple, the ventilation component allows air to circulate inside the distribution box, preventing moisture entering the distribution box from corroding the equipment; the dehumidifying component effectively removes moisture from the distribution box, keeping the air inside dry; and the dustproof component effectively prevents dust inside the distribution box from being carried by the airflow and contaminating the precision equipment.

[0004] The dehumidification and moisture-proof structure of the cabinet mentioned above has a relatively fixed extraction position for internal gas during actual use, which reduces the internal dehumidification effect. Therefore, it does not meet the existing requirements. In response, we have proposed a dehumidification and moisture-proof structure for photovoltaic grid-connected inverter cabinets. Utility Model Content

[0005] The purpose of this utility model is to provide a dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet. By adjusting the orientation of the curved exhaust pipes at the installation and fixed positions, the angle and orientation of the extracted internal gas can be initially adjusted. Furthermore, the array of multiple curved exhaust pipes can extract gas from multiple internal corners, adapting to the installation position for timely adjustments, thereby improving the dehumidification effect and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet, including a cabinet shell, a sealing door panel at the front end of the cabinet shell, and three heat exhaust ports longitudinally arranged on one side of the cabinet shell.

[0007] It also includes a first storage cavity, which is located at the lower end of the cabinet shell. The first storage cavity has four inverter mounting brackets arranged longitudinally inside. One side of the four inverter mounting brackets is welded and fixed to the inside of the cabinet shell. The first storage cavity has a first diversion pipe arranged in an array inside. One end of the first diversion pipe is provided with a curved exhaust pipe. The curved exhaust pipe and the first diversion pipe are rotatably sealed and connected by a rotating sealing ring.

[0008] Preferably, the other end of the first diversion pipe is sealed and connected to the first converging pipe, one end of the first converging pipe is provided with a dehumidification device, and one end of the dehumidification device is provided with an air pump.

[0009] Preferably, an air storage box is provided on one side of the upper end of the air pump, a third diversion pipe is provided at the lower end of the air storage box, a first three-way valve is provided on one side of the outside of the third diversion pipe, and a second three-way valve is provided on the other side of the outside of the third diversion pipe. One end of the second three-way valve and the first three-way valve are sealed and connected to one side of the outside of the third diversion pipe.

[0010] Preferably, a second diversion pipe is provided at the upper end of the outside of the first and third valves, and a fourth diversion pipe is provided at the upper end of the outside of the second and third valves. The two ends of the outside of the fourth diversion pipe are respectively sealed and connected to the air storage box and the second and third valves, and the two sides of the outside of the second diversion pipe are respectively sealed and connected to the air storage box and the first and third valves.

[0011] Preferably, a second converging pipe is provided at the lower end of the exterior of the second and third valves. One side of the exterior of the second converging pipe is sealed to one side of the interior of the cabinet shell, and the other side of the exterior of the second converging pipe is sealed to the lower end of the exterior of the second and third valves.

[0012] Preferably, the lower end of the dehumidification device is provided with a water storage ring, and the water storage ring is an integral structure with the cabinet shell. A second storage cavity is provided outside the water storage ring, and a sealed viewing glass is provided at the front end of the second storage cavity. The outside of the sealed viewing glass is bonded and fixed to the inside of the cabinet shell.

[0013] Preferably, a humidity detection device is provided at the lower end of the first storage cavity, and the humidity detection device is electrically connected to the dehumidification device, the first three-phase valve, and the second three-phase valve.

[0014] Preferably, three support frames are longitudinally arranged on one side of the cabinet shell, and the support frames are rotatably connected to the sealing door panel.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model features a first diversion pipe arrayed inside the first storage cavity, with a curved suction pipe at the front end of the first diversion pipe. The curved suction pipe and the first diversion pipe are connected by a rotary sealing ring. When the inverter is actually installed outside the inverter mounting bracket, the orientation of the curved suction pipe can be adjusted according to the installation position and fixed position to initially adjust the angle and orientation of the extracted internal gas. Furthermore, the array of multiple curved suction pipes can extract gas from multiple corners inside the cavity, allowing for timely adjustments to adapt to the installation position and improve the dehumidification effect.

[0017] 2. This utility model features a dehumidification device on one side of the upper end of the second storage chamber, and an air storage box on one side of the upper end of the dehumidification device. When the user opens the sealed door to inspect the internal equipment, a large amount of moisture from the external environment will enter at once. When the sealed door is closed, the first and second valves adjust the airflow, allowing the drier gas stored in the air storage box to directly enter the first storage chamber, replacing the more humid gas that has just entered the first storage chamber. This proactive and rapid replacement of the humid gas inside improves the efficiency of dehumidification. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall external structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the cabinet shell of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle;

[0021] Figure 4 This is a schematic diagram of the curved suction pipe position structure of this utility model;

[0022] Figure 5 This is a perspective view showing the positional relationship between the first converging pipe and the first diverting pipe of this utility model.

[0023] In the diagram: 1. Cabinet shell; 2. Sealed door panel; 3. Support frame; 4. Heat exhaust port; 5. First storage chamber; 6. Second storage chamber; 7. Inverter mounting bracket; 8. Sealed viewing glass; 9. First branch pipe; 10. Bent exhaust pipe; 11. Rotary sealing ring; 12. Water storage ring; 13. Dehumidifier; 14. First converging pipe; 15. Air pump; 16. First and third valves; 17. Second branch pipe; 18. Third branch pipe; 19. Air storage box; 20. Fourth branch pipe; 21. Second and third valves; 22. Second converging pipe; 23. Humidity detection device. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To address the issue that existing server rack dehumidification and moisture-proof structures often rely on a fixed extraction point for internal air, which can reduce dehumidification efficiency, please refer to [the relevant documentation / reference needed]. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This embodiment provides the following technical solution:

[0026] A dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet includes a cabinet shell 1, with a sealed door panel 2 at the front end of the outer side of the cabinet shell 1, and three heat exhaust ports 4 longitudinally arranged on one side of the interior of the cabinet shell 1; it also includes a first storage cavity 5, which is located at the lower end of the interior of the cabinet shell 1, with four inverter mounting brackets 7 longitudinally arranged inside the first storage cavity 5, one side of the four inverter mounting brackets 7 being welded and fixed to the interior of the cabinet shell 1, and a first diversion pipe 9 arrayed inside the first storage cavity 5, with a bent exhaust pipe 10 at one end of the first diversion pipe 9. The air pipe 10 is rotatably sealed to the first diversion pipe 9 by a rotating sealing ring 11. The other end of the first diversion pipe 9 is sealed to the outside by a first converging pipe 14. A dehumidification device 13 is provided at one end of the first converging pipe 14, and an air pump 15 is provided at the other end of the dehumidification device 13. The orientation of the curved air pump 10 is adjusted according to the installation position and the fixed position to initially adjust the angle and orientation of the internal gas extraction. Furthermore, the multiple curved air pumps 10 in the array can extract gas from multiple corners inside the room, and timely adjustments can be made to adapt to the installation position to improve the dehumidification effect.

[0027] To address the issue of excessive moisture inside the dehumidifier caused by a single large influx of moisture, please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This embodiment provides the following technical solution:

[0028] An air storage tank 19 is installed on one side of the upper end of the air pump 15. A third diversion pipe 18 is installed at the lower end of the air storage tank 19. A first three-way valve 16 is installed on one side of the outer side of the third diversion pipe 18, and a second three-way valve 21 is installed on the other side of the outer side of the third diversion pipe 18. One end of the second three-way valve 21 and the first three-way valve 16 are sealed to one side of the outer side of the third diversion pipe 18. A second diversion pipe 17 is installed at the upper end of the outer side of the first three-way valve 16, and a fourth diversion pipe 20 is installed at the upper end of the outer side of the second three-way valve 21. Both ends of the fourth diversion pipe 20 are sealed to the air storage tank 19 and the second three-way valve 21, respectively. Both sides of the second diversion pipe 17 are sealed to the air storage tank 19 and the first three-way valve 16, respectively. A second converging pipe 22 is provided at the lower end of the exterior of the second and third valves 21. One side of the exterior of the second converging pipe 22 is sealed to one side of the interior of the cabinet shell 1, and the other side of the exterior of the second converging pipe 22 is sealed to the lower end of the exterior of the second and third valves 21. A humidity detection device 23 is provided at the lower end of the interior of the first storage chamber 5. The humidity detection device 23 is electrically connected to the dehumidification device 13, the first and third valves 16 and 21. The first and third valves 16 and 21 adjust the airflow direction so that the relatively dry gas stored in the air storage box 19 directly enters the first storage chamber 5, replacing the relatively humid gas that has just entered the first storage chamber 5. This actively and quickly replaces the relatively humid gas inside, improving the efficiency of the dehumidification process.

[0029] The lower end of the dehumidification device 13 is provided with a water storage ring 12, and the water storage ring 12 is an integral structure with the cabinet shell 1. The outside of the water storage ring 12 is provided with a second storage cavity 6. The front end of the second storage cavity 6 is provided with a sealed viewing glass 8, and the outside of the sealed viewing glass 8 is bonded and fixed to the inside of the cabinet shell 1. Three support frames 3 are longitudinally provided on one side of the cabinet shell 1. The support frames 3 are rotatably connected to the sealed door panel 2. The working status of the equipment inside the second storage cavity 6 can be directly observed through the sealed viewing glass 8, which is convenient for users.

[0030] Working principle: When using the device and dehumidifying the interior, according to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5To accommodate different installation positions of various inverter models, after the inverter is installed on one side of the inverter mounting bracket 7, the curved exhaust pipe 10 is rotated via the rotating sealing ring 11 outside the corresponding first branch pipe 9. This rotation directly adjusts the orientation of the intake port of the curved exhaust pipe 10. Combined with the array of curved exhaust pipes 10, gas can be extracted from different locations within the second storage chamber 6 for comprehensive dehumidification, improving dehumidification efficiency. To prevent a large amount of external humid gas from entering the first storage chamber 5 after the sealing door 2 is opened, after the sealing door 2 is closed, the humidity detection device 23 detects that the internal air humidity is higher than a set value. At this time, the exhaust pump 15 simultaneously extracts gas from one end of the array of curved exhaust pipes 10 through the first converging pipe 14. The air is filtered by the dehumidifier 13. During the extraction process, the first and third valves 16 and 21 are activated to adjust the airflow direction at one end of the air pump 15. This allows the gas flowing from the third diversion pipe 18 to flow into the air storage tank 19 through the second diversion pipe 17. The gas stored in the air storage tank 19 is then transported to the second converging pipe 22 through the fourth diversion pipe 20 and enters the first storage chamber 5 to complete dehumidification. Once the humidity detection device 23 detects that the internal gas humidity value is lower than the set value, the first and third valves 16 and 21 are activated to adjust the airflow direction at one end of the air pump 15. This allows the gas at one end of the air pump 15 to flow through the third diversion pipe 18, causing the dry gas to be retained in the air storage tank 19 again for subsequent use.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet, comprising a cabinet shell (1), wherein a sealing door panel (2) is provided at the front end of the cabinet shell (1), and three heat exhaust ports (4) are longitudinally arranged on one side of the interior of the cabinet shell (1), characterized in that: It also includes a first storage cavity (5), which is located at the lower end inside the cabinet shell (1). The first storage cavity (5) has four inverter mounting brackets (7) arranged longitudinally inside. One side of the four inverter mounting brackets (7) is welded and fixed to the inside of the cabinet shell (1). The first storage cavity (5) has a first diversion pipe (9) arranged in an array inside. One end of the first diversion pipe (9) is provided with a curved exhaust pipe (10). The curved exhaust pipe (10) and the first diversion pipe (9) are rotatably sealed by a rotating sealing ring (11).

2. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 1, characterized in that: The other end of the first diversion pipe (9) is sealed and connected through the first converging pipe (14). One end of the first converging pipe (14) is provided with a dehumidification device (13), and one end of the dehumidification device (13) is provided with an air pump (15).

3. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 2, characterized in that: An air storage tank (19) is provided on one side of the upper end of the air pump (15). A third diversion pipe (18) is provided at the lower end of the air storage tank (19). A first three-way valve (16) is provided on one side of the outside of the third diversion pipe (18). A second three-way valve (21) is provided on the other side of the outside of the third diversion pipe (18). One end of the second three-way valve (21) and the first three-way valve (16) are sealed and connected to one side of the outside of the third diversion pipe (18).

4. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 3, characterized in that: The upper end of the first three-phase valve (16) is provided with a second diversion pipe (17), and the upper end of the second three-phase valve (21) is provided with a fourth diversion pipe (20). The two ends of the fourth diversion pipe (20) are respectively sealed to the air storage box (19) and the second three-phase valve (21), and the two sides of the second diversion pipe (17) are respectively sealed to the air storage box (19) and the first three-phase valve (16).

5. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 4, characterized in that: A second converging pipe (22) is provided at the lower end of the exterior of the second and third valves (21). One side of the exterior of the second converging pipe (22) is sealed to one side of the interior of the cabinet shell (1), and the other side of the exterior of the second converging pipe (22) is sealed to the lower end of the exterior of the second and third valves (21).

6. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 2, characterized in that: The dehumidification device (13) is provided with a water storage ring (12) at its lower end, and the water storage ring (12) and the cabinet shell (1) are an integral structure. The water storage ring (12) is provided with a second storage cavity (6) on its outside. The front end of the second storage cavity (6) is provided with a sealed viewing glass (8), and the outside of the sealed viewing glass (8) is bonded and fixed to the inside of the cabinet shell (1).

7. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 1, characterized in that: A humidity detection device (23) is provided at the lower end of the first storage cavity (5). The humidity detection device (23) is electrically connected to the dehumidification device (13), the first three-phase valve (16), and the second three-phase valve (21).

8. The dehumidification and moisture-proof structure for a photovoltaic grid-connected inverter cabinet according to claim 1, characterized in that: Three support frames (3) are longitudinally arranged on one side of the cabinet shell (1), and the support frames (3) are rotatably connected to the sealing door panel (2).

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