Heat dissipation type outdoor photovoltaic grid-connected box

Abstract

The utility model relates to the technical field of photovoltaic grid-connected boxes, in particular to a heat dissipation type outdoor photovoltaic grid-connected box. According to the technical scheme, the air blowing device comprises a box body and a box door rotationally installed on the box body, and further comprises a supporting plate fixedly installed in the box body, an installation plate fixedly installed on the supporting plate, four air inlet plates fixedly installed on the installation plate and two air blowing devices fixedly installed in the box body, and each air blowing device comprises a wind power adjusting mechanism. According to the utility model, targeted wind power adjustment can be carried out for electrical components in different areas, the positions of the splitter plate and the sliding plate in the diversion box can be adjusted, the diversion box is divided into two parts by the splitter plate and the sliding plate, and the communication areas of the two parts and the air bellow are different; therefore, airflow entering the two air supply holes in the same flow guide box can be distributed, and reasonable heat dissipation can be effectively carried out on electric appliance elements in different areas under the condition that the output power of the fan is not changed.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic grid-connected boxes, in particular to a heat-dissipating outdoor photovoltaic grid-connected box. Background Art

[0002] The outdoor photovoltaic grid-connected box is an outdoor device designed for photovoltaic power generation systems. It is mainly used to convert the direct current generated by photovoltaic panels into alternating current and connect it to the power grid. The grid-connected box mainly includes photovoltaic grid-connected inverters, protection devices, switchgear and monitoring systems. The photovoltaic grid-connected inverter is the core component of the grid-connected box. Its function is to convert the direct current generated by photovoltaic panels into alternating current that is consistent with the frequency and phase of the power grid. In this way, the electric energy converted by the grid-connected inverter can be seamlessly integrated into the public power grid for users to use.

[0003] Since the photovoltaic grid-connected box contains electronic components and electrical equipment, a certain amount of heat will be generated during long-term operation. If the heat cannot be effectively dissipated, the temperature of the equipment will rise, affecting its performance and life. The electronic components inside the grid-connected box are stacked on top of each other, and different electronic components generate different amounts of heat. Existing air cooling devices usually blow air from the bottom upward. Since the electronic components are stacked on top of each other, the wind is blocked by the electronic components on the lower side, resulting in poor heat dissipation of the electronic components on the upper side. In addition, different electronic components generate different amounts of heat, and it is impossible to adjust the wind force specifically for electronic components in different areas. Summary of the invention

[0004] The purpose of the utility model is to address the problems existing in the background technology and to propose a heat dissipation type outdoor photovoltaic grid-connected box which can prevent electronic components from blocking wind power and can adjust wind power in different areas.

[0005] The technical solution of the utility model is: a heat dissipation type outdoor photovoltaic grid-connected box, comprising a box body, a box door rotatably mounted on the box body, and also comprising:

[0006] A support plate fixedly mounted in the box body, and a mounting plate fixedly mounted on the support plate, wherein the mounting plate is provided with a plurality of through holes;

[0007] Four air inlet plates are fixedly mounted on the mounting plate;

[0008] Two air blowing devices are fixedly installed in the box, each of which is provided with two air supply holes, and the four air supply holes correspond to the four air inlet plates one by one and are connected through an air pipe;

[0009] The air blowing device comprises a wind force regulating mechanism, and the wind force regulating mechanism regulates the magnitude of the wind force output by the air blowing device to the air supply hole.

[0010] Optionally, a fan box is formed between the support plate and the bottom of the box body, and the wind force regulating mechanism is installed in the fan box.

[0011] Optionally, a conveying box is formed between the mounting plate and the side wall of the box body, and the air inlet plate is located in the conveying box.

[0012] Optionally, the air blowing device includes a bellows fixedly mounted on the bottom of the box body, two fans fixedly mounted in the bellows, and a guide box fixedly mounted on the bellows, the air supply hole is located on the guide box, and the bellows is provided with a plurality of air holes, which are connected to the guide box.

[0013] Optionally, a plurality of air inlet holes are provided on both sides of the bottom of the box body, and air outlet holes are provided on both sides of the top of the box body. The air inlet holes are located on one side of the bellows, the air inlet holes are connected to the bellows, and a dustproof net is replaceably installed in the air inlet holes.

[0014] Optionally, the guide box gradually shrinks from a side close to the bellows to a side away from the bellows.

[0015] Optionally, the wind force regulating mechanism includes a diverter plate rotatably installed in the guide box, a slide groove is provided in the diverter plate, a slide plate is slidably installed in the slide groove, a slide groove is provided on the bellows, a slider is rotatably installed on the slide plate, the slider is slidably connected to the slide groove, a screw rod is rotatably installed in the slide groove, the slider is threadedly connected to the screw rod, a motor is fixedly installed on one side of the bellows, and the output shaft of the motor is coaxially and fixedly connected to the screw rod.

[0016] Optionally, the air inlet plate is provided with three connection holes, and the three connection holes are evenly distributed on the air inlet plate.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] By setting air inlet plates at different heights of the mounting plate, the electronic components on the lower side can be prevented from blocking the wind, so that the electrical components at all locations can be blown.

[0019] Targeted wind force adjustments can be made for electrical components in different areas, and the positions of the splitter plate and the slide plate in the guide box can be adjusted. Because the splitter plate and the slide plate divide the guide box into two parts, and the areas of the two parts connected to the wind box are different, the airflow into the two air supply holes on the same guide box can be distributed, and the electrical components in different areas can be effectively and reasonably cooled without changing the fan output power. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of an embodiment of the utility model is given;

[0021] Figure 2 Provide an internal cutaway stereogram of the side of the utility model;

[0022] Figure 3 Provide an internal cross-sectional plan view of the side of the utility model;

[0023] Figure 4 A top view of the utility model is provided;

[0024] Figure 5 A structural schematic diagram of the air blowing device of the utility model is given;

[0025] Figure 6 An exploded diagram of the air blowing device of the utility model is given;

[0026] Figure 7 A structural schematic diagram of the air inlet plate of the utility model is given;

[0027] Figure 8 Provide the utility model Figure 4 A partial enlarged view of point A in the middle.

[0028] Figure numerals: 1, box body; 101, box door; 2, support plate; 3, mounting plate; 301, through hole; 4, fan box; 5, conveying box; 6, air inlet plate; 601, connecting hole; 7, bellows; 701, fan; 702, guide box; 703, air hole; 704, air inlet hole; 705, air supply hole; 706, air outlet hole; 8, diverter plate; 801, slide plate; 802, slider; 803, slide groove; 804, screw rod; 805, motor; 9, dust net. DETAILED DESCRIPTION

[0029] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Example

[0031] like Figure 1-8As shown, the utility model proposes a heat dissipation type outdoor photovoltaic grid-connected box, including a box body 1, a box door 101 rotatably mounted on the box body 1, and also includes a support plate 2 fixedly mounted in the box body 1, and a mounting plate 3 fixedly mounted on the support plate 2. The mounting plate 3 is used to mount various electrical components, and a plurality of through holes 301 are provided on the mounting plate 3. The through holes 301 allow wind to pass through the mounting plate 3 and blow onto the electrical components. Four air inlet plates 6 are fixedly mounted on the mounting plate 3. The four air inlet plates 6 cover the entire area of ​​the mounting plate 3 and divide the mounting plate 3 into four areas. Different types of electrical components can be installed in the four areas, and electrical components with similar heat generation can be installed in the same area. Three connecting holes 601 are provided on the air inlet plate 6, and the three connecting holes 601 are evenly distributed on the air inlet plate 6. The wind force in the air inlet plate 6 can be distributed more evenly. Two air blowing devices are fixedly installed in the box body 1, and two air supply holes 705 are provided on the air blowing devices. The four air supply holes 705 correspond to the four air inlet plates 6 one by one and are connected through air pipes. One air supply hole 705 is connected to the three connecting holes 601 on the same air inlet plate 6 through an air pipe (the connection method is the prior art and will not be described again, and the air pipe is not drawn in the figure). For example, a tee can be installed on the air supply hole 705, and then three air pipes can be installed on the tee, and the other ends of the three air pipes can be connected to the three connecting holes 601 on the same air inlet plate 6, so that the wind generated by the air blowing device can be sent into the air inlet plate 6 and blown onto the electrical components through the air inlet plate 6. By arranging the air inlet plates 6 at different heights of the mounting plate 3, the electronic components on the lower side can be prevented from blocking the wind force, so that the electrical components in various places can be blown.

[0032] Furthermore, a fan box 4 is formed between the support plate 2 and the bottom of the box body 1, and the wind force adjustment mechanism is installed in the fan box 4. A conveying box 5 is formed between the mounting plate 3 and the side wall of the box body 1, and the air inlet plate 6 is located in the conveying box 5. The electrical components are installed above the support plate 2 and on the mounting plate 3, and the fan box 4 provides sufficient installation space for the air blowing device. The conveying box 5 is used to accommodate the air pipe and the air inlet plate 6.

[0033] The air blowing device includes a bellows 7 fixedly mounted on the bottom of the box 1, two fans 701 fixedly mounted in the bellows 7, a guide box 702 fixedly mounted on the bellows 7, an air supply hole 705 located on the guide box 702, a plurality of air holes 703 provided on the bellows 7, and the air holes 703 are connected to the guide box 702. A plurality of air inlet holes 704 are provided on both sides of the bottom of the box 1, and air outlet holes 706 are provided on both sides of the top of the box 1. The air inlet hole 704 is located on one side of the bellows 7, and the air inlet hole 704 is connected to the bellows 7. A dustproof net 9 is replaceably installed in the air inlet hole 704. By starting the fan 701, the outside air can be sucked into the bellows 7 through the air inlet hole 704, and the dust in the air will be filtered through the dustproof net 9. The gas entering the bellows 7 will be blown into the guide box 702, and finally enter the air inlet plate 6 through the air pipe on the guide box 702, and is blown into different heights of the mounting plate 3 through the air inlet plate 6 to dissipate heat for electrical components at different heights.

[0034] Furthermore, the guide box 702 gradually contracts from the side close to the wind box 7 to the side away from the wind box 7. The gas can be gradually guided into the air supply hole 705 to prevent the gas in the guide box 702 from flowing back.

[0035] The air blowing device includes a wind force regulating mechanism, which regulates the magnitude of the wind force output by the air blowing device to the air supply hole 705. The wind force regulating mechanism includes a diverter plate 8 rotatably mounted in the guide box 702, a slide groove is provided in the diverter plate 8, a slide plate 801 is slidably mounted in the slide groove, a slide groove 803 is provided on the bellows 7, a slider 802 is rotatably mounted on the slide groove 801, the slider 802 is slidably connected to the slide groove 803, a screw rod 804 is rotatably mounted in the slide groove 803, the slider 802 is threadedly connected to the screw rod 804, a motor 805 is fixedly mounted on one side of the bellows 7, and the output shaft of the motor 805 is coaxially fixedly connected to the screw rod 804. When adjusting the wind force for electrical components in different areas, the position of the diverter plate 8 and the slide plate 801 in the guide box 702 can be adjusted, because the diverter plate 8 and the slide plate 801 divide the guide box into two parts, and the areas of the two parts connected to the wind box 7 are different. The side of the guide box 702 with a larger area connected to the wind box 7 has a stronger wind force. When adjusting the position of the diverter plate 8 and the slide plate 801, the motor 805 is started to drive the slider 802 to slide inside the slide slot 803, which can drive the slide plate 801 to move, and slide the slide plate 801 in the diverter plate 8, and rotate the diverter plate 8 at the same time, so as to adjust the position of the diverter plate 8 and the slide plate 801 in the guide box 702, and then distribute the airflow into the two air supply holes 705 on the same guide box 702, so as to effectively and reasonably dissipate the heat of electrical components in different areas when the output power of the fan 701 remains unchanged.

[0036] Working principle: connect one air supply hole 705 with three connection holes 601 on the same air inlet plate 6 through an air pipe. Start the fan 701 to suck the outside air into the bellows 7 through the air inlet hole 704, and the gas entering the bellows 7 will be blown into the guide box 702, and finally enter the air inlet plate 6 through the air pipe on the guide box 702, and blown into different heights of the mounting plate 3 through the air inlet plate 6 to dissipate heat for electrical components at different heights. Start the motor 805 to drive the slider 802 to slide inside the slide groove 803, which can drive the slide plate 801 to move, and make the slide plate 801 slide in the diverter plate 8, and at the same time make the diverter plate 8 rotate, so as to adjust the position of the diverter plate 8 and the slide plate 801 in the guide box 702, and then distribute the airflow into the two air supply holes 705 on the same guide box 702, and effectively and reasonably dissipate heat for electrical components in different areas when the output power of the fan 701 remains unchanged.

[0037] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A heat dissipation type outdoor photovoltaic grid-connected box, comprising a box body (1), and a box door (101) rotatably mounted on the box body (1), characterized in that: Also includes: A support plate (2) fixedly mounted in the box body (1), and a mounting plate (3) fixedly mounted on the support plate (2), wherein the mounting plate (3) is provided with a plurality of through holes (301); Four air inlet plates (6) are fixedly mounted on the mounting plate (3); Two air blowing devices are fixedly installed in the box body (1), and the air blowing devices are provided with two air supply holes (705). The four air supply holes (705) correspond to the four air inlet plates (6) one by one and are connected through air pipes; The air blowing device comprises a wind force regulating mechanism, and the wind force regulating mechanism regulates the magnitude of the wind force output by the air blowing device to the air supply hole (705).

2. A heat dissipation type outdoor photovoltaic grid-connected box according to claim 1, characterized in that: A fan box (4) is formed between the support plate (2) and the bottom of the box body (1), and the wind force adjustment mechanism is installed in the fan box (4).

3. A heat dissipation type outdoor photovoltaic grid-connected box according to claim 1, characterized in that: A conveying box (5) is formed between the mounting plate (3) and the side wall of the box body (1), and the air inlet plate (6) is located inside the conveying box (5).

4. A heat dissipation type outdoor photovoltaic grid-connected box according to claim 1, characterized in that: The air blowing device comprises a bellows (7) fixedly mounted on the bottom of the box body (1), two fans (701) fixedly mounted in the bellows (7), and a flow guide box (702) fixedly mounted on the bellows (7); the air supply hole (705) is located on the flow guide box (702); a plurality of air holes (703) are provided on the bellows (7); and the air holes (703) are in communication with the flow guide box (702).

5. A heat dissipation type outdoor photovoltaic grid-connected box according to claim 4, characterized in that: A plurality of air inlet holes (704) are provided on both sides of the bottom of the box body (1), and air outlet holes (706) are provided on both sides of the top of the box body (1). The air inlet holes (704) are located on one side of the bellows (7), and the air inlet holes (704) are connected to the bellows (7). A dustproof net (9) is replaceably installed in the air inlet holes (704).

6. A heat dissipation type outdoor photovoltaic grid-connected box according to claim 4, characterized in that: The guide box (702) gradually shrinks from a side close to the bellows (7) to a side away from the bellows (7).

7. A heat dissipation type outdoor photovoltaic grid-connected box according to claim 4, characterized in that: The wind force regulating mechanism comprises a diverter plate (8) rotatably mounted in a guide box (702), a slide groove being provided in the diverter plate (8), a slide plate (801) being slidably mounted in the slide groove, a slide groove (803) being provided on the bellows (7), a slider (802) being rotatably mounted on the slide plate (801), the slider (802) being slidably connected to the slide groove (803), a screw rod (804) being rotatably mounted in the slide groove (803), the slider (802) being threadedly connected to the screw rod (804), a motor (805) being fixedly mounted on one side of the bellows (7), and an output shaft of the motor (805) being coaxially fixedly connected to the screw rod (804).

8. The heat dissipation type outdoor photovoltaic grid-connected box according to claim 1, characterized in that: The air inlet plate (6) is provided with three connection holes (601), and the three connection holes (601) are evenly distributed on the air inlet plate (6).

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