An outdoor ring network cabinet based on photovoltaic cooling and dehumidification

Abstract

The present application relates to an outdoor ring network cabinet box based on photovoltaic cooling and dehumidification, which includes a cabinet, which is provided with an air inlet, an air outlet, and an air inlet fan. The cabinet is also provided with: a photovoltaic panel, whose power output end is electrically connected to the air inlet fan; a drying box, which is provided at the air outlet and filled with a silica gel desiccant layer; a top cover, which is arranged in an upper opening of the cabinet for lifting and sliding, and the air inlet is arranged on the side of the top of the top cover; a flow control mechanism, which is configured to maintain the top cover in an elevated state when the photovoltaic panel is generating stable power, and to lower the top cover when the photovoltaic panel's power generation efficiency decreases; when the top cover is lowered, the air flow at the air inlet is reduced; a drying mechanism, which is configured to dry the silica gel desiccant layer when the photovoltaic panel is generating stable power; and a flow guide mechanism, which is configured to guide the airflow from the air inlet to the back of the photovoltaic panel. The present application can adaptively increase or decrease the air intake volume in the cabinet according to changes in sunlight intensity, and can simultaneously take into account the cooling and dehumidification problems in high and low temperature environments.

Description

Technical Field

[0001] The present application relates to the technical field of ring main unit (RMU), and in particular to an outdoor RMU box based on photovoltaic cooling and dehumidification. Background Art

[0002] A ring main unit (RMU) is a high-voltage power distribution device primarily used in ring network power supply systems and is a key component in achieving this goal. Its primary function is to distribute and switch high-voltage power, ensuring the efficient and reliable operation of the power system. RMUs contain a variety of electrical components, such as switches, circuit breakers, and transformers. These devices generate heat during operation. If this heat cannot be dissipated promptly, the internal temperature will rise. Furthermore, RMUs are typically installed in outdoor or semi-outdoor environments and are susceptible to humidity. Moisture can degrade the insulation performance of insulation materials, increasing the risk of component failure.

[0003] In related art, Chinese patent application number CN202210396259.7 proposes an outdoor ring main unit (RMU) cabinet for cooling and dehumidifying based on a photovoltaic integration method. The cabinet comprises a base, a cabinet mounted on the base, and a top cover mounted on top of the cabinet. The cabinet comprises a cabinet frame, a main door mounted on the cabinet frame, and several side doors. A transparent plate and a photovoltaic panel are sealed and installed in the middle of the main door in order from the outside to the inside. The transparent plate and the photovoltaic panel are spaced apart to form a wall chamber between the transparent plate and the photovoltaic panel. The main door is provided with a first air outlet below the photovoltaic panel, communicating with the lower end of the wall chamber. A second air outlet above the transparent panel is provided, communicating with the upper end of the wall chamber. The side doors are provided with air inlets. This invention creates an open, normalized air circulation between the cabinet and the external environment under light conditions, achieving cooling and dehumidification of the RMU without the need for additional energy supply. It can also improve the power generation efficiency of the photovoltaic panel while cooling and dehumidifying the RMU.

[0004] The above-mentioned related technologies have the following defects: for silicon-based photovoltaic panels, as the temperature rises, the degree of decrease in their photoelectric conversion efficiency continues to increase. Studies have shown that the ideal operating temperature of photovoltaic panels is 25 degrees Celsius. For every 1°C increase, the photoelectric conversion efficiency of photovoltaic panels decreases by 0.3% to 0.5%, and the service life of photovoltaic arrays will also be shortened at higher operating temperatures; the above-mentioned scheme hopes to achieve hot and cold air circulation in the box through the sun-drying structure in the wall cavity. In the hot summer, the efficiency of this hot and cold air circulation will be greatly affected, and this hot and cold air circulation is not enough to cool the box in the ring network cabinet; and in the low temperature season, the dehumidification effect is not obvious, which affects the actual use experience. Summary of the Invention

[0005] In order to improve the problem that the existing ring main unit cabinet is difficult to simultaneously take into account the cooling and dehumidification in high and low temperature environments, the present application provides an outdoor ring main unit cabinet based on photovoltaic cooling and dehumidification.

[0006] The outdoor ring network cabinet box based on photovoltaic cooling and dehumidification provided in this application adopts the following technical solutions:

[0007] An outdoor ring network cabinet box based on photovoltaic cooling and dehumidification includes a box body, an air inlet is provided on the top of the box body, an air outlet is provided on the bottom of the box body, an air inlet fan is provided on the box body for introducing external air from the air inlet, and the box body is also provided with:

[0008] A photovoltaic panel is provided on the front side of the box, and its power output end is electrically connected to the air inlet fan;

[0009] A drying box, provided at the air outlet, the interior of which is filled with a silica gel desiccant layer;

[0010] A top cover, wherein the top of the box body is provided with an upper opening, the top cover is arranged in the upper opening for lifting and sliding, and the air inlet is arranged on the peripheral side of the top of the top cover;

[0011] a flow control mechanism configured to maintain the top cover in an elevated state when the photovoltaic panel generates stable power, and to move the top cover downward when the photovoltaic panel generates less power; when the top cover moves downward, the air flow rate of the air inlet decreases;

[0012] a drying mechanism configured to dry the silica gel desiccant layer in the drying box when the photovoltaic panel generates stable power;

[0013] The flow guiding mechanism is configured to guide the air flow from the air inlet to the back of the photovoltaic panel.

[0014] Furthermore, the flow control mechanism includes:

[0015] A base, fixedly connected to the box;

[0016] A console, fixedly connected to the bottom of the top cover and arranged in a vertical correspondence with the base;

[0017] an electromagnet mounted on the base, wherein the power output end of the photovoltaic panel is electrically connected to the electromagnet;

[0018] a permanent magnet, mounted on the bottom of the console, with its top magnetic pole being the same as the magnetic pole of the electromagnet after power is supplied; and

[0019] A control cover is fixed to the upper opening of the box body, the top cover is slidably arranged in the control cover, and when the permanent magnet is in contact with the electromagnet, the control cover does not completely close the air inlet.

[0020] Furthermore, the top cover is provided with:

[0021] A dust cover is fixed to the top of the top cover, and the outer diameter of the dust cover is larger than the outer diameter of the top cover;

[0022] A blocking edge is fixedly connected to the outer edge of the dust shield and extends toward the control shield, wherein a projection of the blocking edge on the outer peripheral side of the top shield completely covers the air inlet.

[0023] Furthermore, the flow guiding mechanism includes:

[0024] An air guide cover is provided in the box body, with an upper opening thereof pointing toward the air outlet of the air inlet fan, and when the top cover moves down to the point where the air flow at the air inlet is reduced to a minimum, the top cover closes the upper opening of the air guide cover;

[0025] A heat soaking cover is provided on the back of the photovoltaic panel;

[0026] An air duct connecting the air duct cover and the soaking hood;

[0027] An exhaust port is provided on the outer wall of the box body and is communicated with the inner cavity of the heat soaking hood. The exhaust port is located on the side of the photovoltaic panel.

[0028] Furthermore, it also includes:

[0029] The fins are fixed to the inner wall of the heat soaking hood and divide the inner cavity of the heat soaking hood into a plurality of flow channels, one end of the flow channel is connected to the air duct, and the other end is connected to the exhaust port.

[0030] Furthermore, the flow channel is straight, serpentine, bent or vortex-shaped.

[0031] Furthermore, a flow guide cover located between the exhaust port and the photovoltaic panel is fixedly connected to the outer wall of the box body, and the flow guide direction of the flow guide cover outlet is arranged away from the photovoltaic panel.

[0032] Furthermore, the photovoltaic panel is electrically connected to a battery, and the battery is electrically connected to the air intake fan; the battery is connected to the air intake fan only when the top cover moves down to the air intake port and the ventilation volume drops to the minimum.

[0033] Furthermore, the drying mechanism includes a heating wire arranged in the drying box, and the heating wire is electrically connected to the power output end of the photovoltaic panel.

[0034] In summary, the beneficial technical effects of this application are:

[0035] 1. When there is sufficient sunshine, the photovoltaic panels can convert solar energy into electrical energy. Part of the converted electrical energy is directly supplied to the air intake fan. When the air intake fan is working, it can transport external cold air into the box through the air inlet to efficiently dissipate heat for the electrical components in the box. Especially in the summer when the outdoor temperature is high and there is sufficient sunshine outdoors, the heat dissipation effect of the box of the present application is also better; another part of the electrical energy is supplied to the drying mechanism to dry the silica gel desiccant layer in the drying box, so that the silica gel desiccant layer can restore its moisture absorption capacity so that it can be used repeatedly, thereby ensuring that the box of the present application can ensure good dehumidification effect in different seasons; another part of the excess electrical energy can be stored in the battery. When the sunlight is reduced to the weakest or even the photovoltaic panel cannot supply electricity, the battery can provide electricity for the air intake fan to ensure the service life of the air intake fan, that is, to ensure the long-term and effective heat dissipation effect of the box of the present application;

[0036] 2. When the air inlet fan is working, the guide mechanism guides the airflow output by the air inlet fan to the back of the photovoltaic panel, which can significantly reduce the temperature of the photovoltaic panel in a high-temperature environment, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel and making the best possible use of solar energy. At the same time, under the action of the flow control mechanism, when the sunlight intensity is high, the top cover is raised to the highest position, the ventilation volume of the air inlet is the largest, and when the air inlet fan is working, a large amount of external cold air can be transported into the box for cooling. When the sunlight intensity decreases, the outdoor ambient temperature also decreases accordingly, and the heat dissipation demand decreases. At this time, the top cover moves down, and the ventilation volume of the air inlet is reduced, which can effectively reduce the dust and moisture that are sucked into the box. Therefore, the box of the present application can simultaneously take into account the cooling and dehumidification problems in high and low temperature environments.

[0037] 3. By setting the air intake fan to a PWM DC fan or an AC fan with a frequency converter, when the DC or AC current output by the photovoltaic panel changes under different light conditions, the air supply volume of the air intake fan can be adapted to the air inlet exposed on the top cover, which can better adapt to the outdoor ambient temperature and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic cross-sectional structural diagram of an embodiment of the present application;

[0039] Figure 2 This is a schematic cross-sectional view of the embodiment of the present application, mainly used to illustrate the structure inside the soaking hood;

[0040] Figure 3 yes Figure 1 A partial enlarged schematic diagram of part A.

[0041] Description of reference numerals:

[0042] 1. Box body; 11. Air inlet; 12. Air outlet; 13. Air inlet fan; 14. Drying box; 141. Silica gel desiccant layer; 142. Heating wire; 15. Upper opening; 16. Control cover; 17. Exhaust port; 18. Air guide cover; 19. Side guard plate;

[0043] 21. Photovoltaic panels; 22. Batteries;

[0044] 31. Top cover; 32. Dust cover; 33. Guard edge;

[0045] 41. Base; 42. Control console; 43. Electromagnet; 44. Permanent magnet;

[0046] 51. Air guide cover; 52. Heat absorbing cover; 53. Air guide duct; 54. Fin; 55. Flow channel. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0048] The embodiment of the present application discloses an outdoor ring network cabinet box based on photovoltaic cooling and dehumidification. Figure 1 It includes a box body 1, an air inlet 11 is provided on the top of the box body 1, and an air outlet 12 is provided on the bottom. The air outlet 12 is specifically provided on the bottom side wall of the box body 1, and the box body 1 is provided with dustproof nets at the air inlet 11 and the air outlet 12; the box body 1 is provided with an air intake fan 13 for introducing external air from the air inlet 11, and the air intake fan 13 is set as an axial flow fan.

[0049] The box 1 is also provided with:

[0050] The photovoltaic panel 21 is provided on the front side of the housing 1. The power output end thereof is electrically connected to the air inlet fan 13 after current integration by the inverter. The photovoltaic panel 21 is specifically arranged at an angle. The photovoltaic panel 21 can be fixedly mounted on the housing 1 or hingedly mounted on the housing 1, and the adjusted angle can be locked by bolts and nuts at the hinge axis.

[0051] The drying box 14 is provided at the air outlet 12 and is filled with a silica gel desiccant layer 141. The silica gel desiccant layer 141 can be heated, dried and reused after absorbing moisture.

[0052] The top cover 31 has an upper opening 15 on the top of the box body 1. The top cover 31 is slidably arranged in the upper opening 15. The air inlet 11 is arranged on the top periphery of the top cover 31. Specifically, the air inlet 11 is a plurality of through holes evenly distributed on the top periphery of the top cover 31. The air intake fan 13 is located in the inner cavity of the top cover 31.

[0053] The flow control mechanism is configured to maintain the top cover 31 in an elevated state when the photovoltaic panel 21 is generating stable power, and to move the top cover 31 downward when the power generation efficiency of the photovoltaic panel 21 decreases. When the top cover 31 moves downward, the ventilation volume of the air inlet 11 decreases. Stable power generation by the photovoltaic panel 21 refers to a state of sufficient sunlight, while reduced power generation efficiency by the photovoltaic panel 21 refers to a state of decreased sunlight intensity or even no sunlight.

[0054] A drying mechanism configured to dry the silica gel desiccant layer 141 in the drying box 14 when the photovoltaic panel 21 generates electricity steadily;

[0055] a flow guiding mechanism configured to guide the airflow from the air inlet 11 to the back of the photovoltaic panel 21;

[0056] In addition, the photovoltaic panel 21 is electrically connected to the battery 22, and the battery 22 is electrically connected to the air intake fan 13; and the battery 22 is connected to the air intake fan 13 only when the top cover 31 moves down to the air intake port 11 and the ventilation volume drops to the minimum.

[0057] After such a setting, with the help of the setting of the box 1 of the present application, when there is sufficient sunshine, the photovoltaic panel 21 can convert solar energy into electrical energy. Part of the converted electrical energy is directly supplied to the air inlet fan 13. When the air inlet fan 13 is working, it can transport external cold air into the box 1 through the air inlet 11 to efficiently dissipate heat for the electrical components in the box 1. Especially in the summer when the outdoor temperature is high and there is sufficient sunshine outdoors, the heat dissipation effect of the box 1 of the present application is also better; the other part of the electrical energy is supplied to the drying mechanism, which can dry the silica gel desiccant layer 141 in the drying box 14, so that the silica gel desiccant layer 141 can restore its moisture absorption capacity. Therefore, at night or in the early morning or when the humidity is high, the silica gel desiccant layer 141 in the drying box 14 absorbs more moisture in the box body 1. When the sunlight is restored outdoors, the drying box 14 can restore its moisture absorption capacity so that it can be used repeatedly, thereby ensuring that the box body 1 of the present application can ensure good dehumidification effect in different seasons; another part of the excess electricity can be stored in the battery 22. When the light is reduced to the weakest or even the photovoltaic panel 21 cannot supply electricity, the battery 22 can provide electricity for the air intake fan 13 to ensure the service life of the air intake fan 13, that is, to ensure the long-term and effective heat dissipation effect of the box body 1 of the present application.

[0058] Furthermore, when the air inlet fan 13 is operating, the flow guide mechanism can also guide the airflow output by the air inlet fan 13 to the back of the photovoltaic panel 21, which can significantly reduce the temperature of the photovoltaic panel 21 in a high-temperature environment, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel 21, making full use of solar energy as much as possible, and reducing the dependence of the box 1 of the present application on external energy. At the same time, under the action of the flow control mechanism, when the sunlight intensity is high, the top cover 31 is raised to the highest position, the ventilation volume of the air inlet 11 is the largest, and when the air inlet fan 13 is operating, a large amount of external cold air can be transported into the box 1 for cooling; when the sunlight intensity decreases, the outdoor ambient temperature also decreases accordingly, and the demand for heat dissipation decreases. At this time, the top cover 31 moves down, and the ventilation volume of the air inlet 11 is reduced, which can effectively reduce the dust, moisture, etc. being sucked into the box 1. Therefore, the box 1 of the present application can take into account the cooling and dehumidification problems in both high and low temperature environments.

[0059] Specifically, refer to Figure 1 , the above-mentioned flow control mechanism includes:

[0060] The base 41 is fixedly connected to the housing 1 and can be used to support the air inlet fan 13;

[0061] The console 42 is fixed to the bottom of the top cover 31. Specifically, a hollow bracket is fixed to the lower part of the top cover 31, and the console 42 is fixed to the middle part of the bracket. The console 42 and the base 41 are arranged in a vertical correspondence.

[0062] The electromagnet 43 is mounted on the base 41. The power output end of the photovoltaic panel 21 is electrically connected to the electromagnet 43 after the current is integrated by the inverter;

[0063] A permanent magnet 44 is mounted on the bottom of the console 42, and its top magnetic pole is the same as the magnetic pole of the electromagnet 43 after it is energized; and

[0064] The control cover 16 is fixed to the upper opening 15 of the box body 1. The top cover 31 is slidably disposed in the control cover 16. When the permanent magnet 44 and the electromagnet 43 are in contact with each other, the control cover 16 does not completely close the air inlet 11.

[0065] Furthermore, in a specific configuration, to ensure smooth sliding of the top cover 31 within the control cover 16, multiple sets of electromagnets 43 and permanent magnets 44 may be provided to reduce the probability of the top cover 31 sliding and getting stuck within the control cover 16. Furthermore, the air inlet fan 13 may also be configured as a fan with automatic speed adjustment that synchronizes speed adjustment with current, such as a PWM DC fan or an AC fan with a frequency converter.

[0066] After such setting, when there is sufficient sunlight outdoors, the electromagnet 43 is energized to generate magnetism, which can form a strong magnetic repulsion force with the permanent magnet 44 on the base 41 of the console 42, so that the console 42 drives the top cover 31 to move upward in the control cover 16, so that the air inlet 11 on the top cover 31 is more exposed, the ventilation volume at the air inlet 11 is increased, and the speed of the air intake fan 13 is also increased, so that the heat dissipation effect of the box 1 of the present application is better; correspondingly, when the sunlight intensity decreases, the current output by the photovoltaic panel 21 decreases, the magnetic force of the electromagnet 43 decreases, the top cover 31 moves downward, and the air inlet 11 on the top cover 31 is partially shielded by the control cover 16, so that the ventilation volume at the air inlet 11 is reduced, and the speed of the air intake fan 13 is also reduced due to the influence of the current reduction. At this time, the heat dissipation effect of the box 1 of the present application is reduced, and it can be better adapted to the outdoor ambient temperature to reduce energy consumption.

[0067] Further, refer to Figure 1 , the top cover 31 is provided with:

[0068] The dust cover 32 is fixed to the top of the top cover 31, and the outer diameter of the dust cover 32 is larger than the outer diameter of the top cover 31;

[0069] The blocking edge 33 is fixed to the outer edge of the dust shield 32 and extends toward the control cover 16 . The projection of the blocking edge 33 on the outer peripheral side of the top cover 31 completely covers the air inlet 11 .

[0070] In this way, by means of the setting of the blocking edge 33 on the dustproof cover 32, rainwater or dust in the environment can be blocked to a certain extent, thereby improving the cleanliness of the box body 1.

[0071] In addition, refer to Figure 1 、 Figure 2 and Figure 3 , the above-mentioned flow guiding mechanism includes:

[0072] The air guide cover 51 is provided in the housing 1, with its upper opening pointing toward the air outlet of the air inlet fan 13. When the top cover 31 moves down to the point where the air flow at the air inlet 11 is reduced to the minimum, the top cover 31 closes the upper opening of the air guide cover 51.

[0073] A heat shroud 52 is provided on the back of the photovoltaic panel 21, and a cavity is formed between the inner wall of the heat shroud 52 and the back of the photovoltaic panel 21;

[0074] The air duct 53 connects the air duct cover 51 and the heat soaking cover 52. The air duct 53 is a flat tube.

[0075] The exhaust port 17 is opened on the outer wall of the box body 1 and is connected to the inner cavity of the heat hood 52. The exhaust port 17 is located on the side of the photovoltaic panel 21; when the photovoltaic panel 21 is hingedly installed on the box body 1, the air duct 53 is specifically a hose, and the exhaust port 17 can be specifically an exhaust pipe and connected to the photovoltaic panel 21.

[0076] The fins 54 are fixed to the inner wall of the heat-saturating cover 52 and divide the inner cavity of the heat-saturating cover 52 into multiple flow channels 55. One end of the flow channel 55 is connected to the air duct 53 and the other end is connected to the exhaust port 17. The flow channel 55 is straight, serpentine, bent or spiral-shaped, thereby increasing the circulation time of the cold air flow in the flow channel 55 to improve the cooling effect on the photovoltaic panel 21.

[0077] Furthermore, a deflector 18 is fixedly attached to the outer wall of the housing 1, located between the exhaust port 17 and the photovoltaic panel 21. The outlet of the deflector 18 is directed away from the photovoltaic panel 21 to prevent the airflow after heat exchange with the photovoltaic panel 21 from blowing onto the surface of the photovoltaic panel 21. Furthermore, side guards 19 are provided at the bottom and sides of the photovoltaic panel 21. The bottom side guards 19 are curved, while the side side guards 19 are fan-shaped. This seals the gap between the photovoltaic panel 21 and the housing 1 when the photovoltaic panel 21 is flipped to adjust the angle. Alternatively, the photovoltaic panel 21 and the heat absorbing shield 52 can be directly placed on the outer surface of the housing 1, with only a flexible air duct 53 connecting the external heat absorbing shield 52 and the internal air absorbing shield 51.

[0078] In this way, when the outdoor environment has sufficient light, the electric energy converted by the photovoltaic panel 21 is relatively stable. At this time, the top cover 31 maintains a state of large ventilation volume at the air inlet 11 thereon. When the air intake fan 13 is working, a part of the cold air flow can flow through the air guide cover 51 and the air guide duct 53 to the heat equalizing cover 52, and simultaneously flow through the multiple flow channels 55 separated by multiple fins 54 in the heat equalizing cover 52, which can carry the heat on the back of the photovoltaic panel 21 and discharge it from the exhaust port 17, so that the photovoltaic panel 21 can be well cooled to ensure that the photovoltaic panel 21 can always be in a state of high photoelectric conversion efficiency as much as possible. When the outdoor environment is not well-lit or even has no light, the top cover 31 moves downward, which can reduce the air intake of the wind guide cover 51 until the air inlet end of the wind guide cover 51 is completely closed, which can effectively avoid the backflow of external airflow at night or in the rainy season, and ensure that the heat dissipation airflow output by the air intake fan 13 when powered by the battery 22 is mainly blown to the electrical components in the box 1, thereby making full use of the heat dissipation airflow of the air intake fan 13 under different conditions.

[0079] In addition, refer to Figure 1 The aforementioned drying mechanism includes a heating wire 142 disposed within the drying box 14. This heating wire 142 is electrically connected to the power output terminal of the photovoltaic panel 21. Specifically, when the photovoltaic panel 21 is exposed to sufficient sunlight, the electricity generated by the heating wire 142 heats and dries the silica gel desiccant layer 141 within the drying box 14. Moisture adsorbed in the silica gel desiccant layer 141 is then discharged through the air outlet 12 by the heat dissipating airflow within the housing 1. This allows the drying box 14 to be reused.

[0080] The implementation principle of an outdoor ring network cabinet based on photovoltaic cooling and dehumidification in the embodiment of the present application is as follows:

[0081] When there is sufficient sunshine, the photovoltaic panels 21 can convert solar energy into electrical energy. Part of the converted electrical energy is directly supplied to the air inlet fan 13. When the air inlet fan 13 is working, the external cold air can be transported into the box body 1 through the air inlet 11 to efficiently dissipate heat for the electrical components in the box body 1. Especially in the summer when the outdoor temperature is high and there is sufficient sunshine outdoors, the heat dissipation effect of the box body 1 of the present application is also better; the other part of the electrical energy is supplied to the heating wire 142, which can dry the silica gel desiccant layer 141 in the drying box 14, so that the silica gel desiccant layer 141 can restore its moisture absorption capacity, so that at night or in the early morning, the heat dissipation of the electric components in the box body 1 is reduced. In the morning or when the humidity is high, the silica gel desiccant layer 141 in the drying box 14 absorbs more moisture in the box body 1. When the sunlight is restored outdoors, the drying box 14 can restore its moisture absorption capacity so that it can be used repeatedly, thereby ensuring that the box body 1 of the present application can ensure good dehumidification effect in different seasons; another part of the excess electricity can be stored in the battery 22. When the light is reduced to the weakest or even the photovoltaic panel 21 cannot supply electricity, the battery 22 can provide electricity for the air intake fan 13 to ensure the service life of the air intake fan 13, that is, to ensure the long-term and effective heat dissipation effect of the box body 1 of the present application.

[0082] Furthermore, when the air inlet fan 13 is operating, the flow guide mechanism can also guide the airflow output by the air inlet fan 13 to the back of the photovoltaic panel 21, which can significantly reduce the temperature of the photovoltaic panel 21 in a high-temperature environment, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel 21, making full use of solar energy as much as possible, and reducing the dependence of the box 1 of the present application on external energy. At the same time, under the action of the flow control mechanism, when the sunlight intensity is high, the top cover 31 is raised to the highest position, the ventilation volume of the air inlet 11 is the largest, and when the air inlet fan 13 is operating, a large amount of external cold air can be transported into the box 1 for cooling; when the sunlight intensity decreases, the outdoor ambient temperature also decreases accordingly, and the demand for heat dissipation decreases. At this time, the top cover 31 moves down, and the ventilation volume of the air inlet 11 is reduced, which can effectively reduce the dust, moisture, etc. being sucked into the box 1. Therefore, the box 1 of the present application can take into account the cooling and dehumidification problems in both high and low temperature environments.

[0083] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0084] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An outdoor ring network cabinet box based on photovoltaic cooling and dehumidification, comprising a box (1), wherein the box (1) is provided with an air inlet (11) on the top and an air outlet (12) on the bottom, and an air inlet fan (13) is provided on the box (1), characterized in that: The box (1) is also provided with: A photovoltaic panel (21) is provided on the front side of the box (1), and its power output end is electrically connected to the air inlet fan (13); A drying box (14), provided at the air outlet (12), the interior of which is filled with a silica gel desiccant layer (141); A top cover (31), the top of the box body (1) is provided with an upper opening (15), a control cover (16) is fixedly connected to the upper opening (15), the top cover (31) is slidably arranged in the control cover (16), and the air inlet (11) is arranged on the top peripheral side of the top cover (31); The flow control mechanism is configured to maintain the top cover (31) in an elevated state when the photovoltaic panel (21) generates electricity stably, and to enable the top cover (31) to move downward when the power generation efficiency of the photovoltaic panel (21) decreases; when the top cover (31) moves downward, the ventilation volume of the air inlet (11) decreases; A drying mechanism configured to dry the silica gel desiccant layer (141) in the drying box (14) when the photovoltaic panel (21) generates electricity stably; A flow guiding mechanism configured to guide the airflow from the air inlet (11) to the back of the photovoltaic panel (21); It comprises: an air guide cover (51) arranged in the box body (1), with its upper end opening pointing towards the air outlet end of the air inlet fan (13); A heat-saturating cover (52) is provided on the back of the photovoltaic panel (21); An air guide pipe (53) connecting the air guide cover (51) and the heat soaking cover (52); An exhaust port (17) is provided on the outer wall of the box body (1) and is in communication with the inner cavity of the heat hood (52), wherein the exhaust port (17) is located on the side of the photovoltaic panel (21); The flow control mechanism comprises: A base (41) is fixedly connected to the box (1); A console (42) is fixed to the bottom of the top cover (31) and is arranged in a vertically corresponding manner to the base (41); The electromagnet (43) is mounted on the base (41), and the power output end of the photovoltaic panel (21) is electrically connected to the electromagnet (43); and the air intake fan (13) is configured to be a speed-automatic fan capable of adjusting the speed synchronously with the current. When the outdoor sunlight is sufficient, the speed of the air intake fan (13) increases; when the sunlight intensity decreases, the speed of the air intake fan (13) decreases. A permanent magnet (44) is mounted on the bottom of the control console (42), and its top magnetic pole is the same as the magnetic pole of the electromagnet (43) after power is applied; when the permanent magnet (44) is in contact with the electromagnet (43), the control cover (16) does not completely close the air inlet (11), and the top cover (31) closes the upper opening of the air guide cover (51); The box (1) is also provided with: The fins (54) are fixed to the inner wall of the heat hood (52) and divide the inner cavity of the heat hood (52) into a plurality of flow channels (55). One end of the flow channel (55) is connected to the air duct (53) and the other end is connected to the exhaust port (17). The flow channel (55) is straight, serpentine, bent or vortex-shaped.

2. The outdoor ring network cabinet body based on photovoltaic cooling and dehumidification according to claim 1 is characterized in that: The top cover (31) is provided with: A dust cover (32) is fixed to the top of the top cover (31), and the outer diameter of the dust cover (32) is larger than the outer diameter of the top cover (31); The retaining edge (33) is fixed to the outer edge of the dust shield (32) and extends in a direction close to the control cover (16), and the projection of the retaining edge (33) on the outer peripheral side of the top cover (31) completely covers the air inlet (11).

3. The outdoor ring network cabinet body based on photovoltaic cooling and dehumidification according to claim 1 is characterized in that: A flow guide cover (18) is fixedly connected to the outer wall of the box body (1) and is located between the exhaust port (17) and the photovoltaic panel (21). The flow guide direction of the outlet of the flow guide cover (18) is arranged away from the photovoltaic panel (21).

4. The outdoor ring network cabinet body based on photovoltaic cooling and dehumidification according to claim 1 is characterized in that: The photovoltaic panel (21) is electrically connected to a battery (22), and the battery (22) is electrically connected to the air intake fan (13); the battery (22) is connected to the air intake fan (13) only when the top cover (31) moves down to the air intake port (11) and the ventilation volume drops to the minimum.

5. The outdoor ring network cabinet body based on photovoltaic cooling and dehumidification according to claim 4 is characterized in that: The drying mechanism comprises a heating wire (142) disposed in the drying box (14), and the heating wire (142) is electrically connected to the power output end of the photovoltaic panel (21).

Images