Photovoltaic inverter

Abstract

The invention discloses a photovoltaic inverter which comprises a photovoltaic inverter body, fixing threaded holes are formed in the back face of the photovoltaic inverter body, pipe frames are symmetrically arranged on the back face of the photovoltaic inverter body, a plurality of fixing through holes are formed in the pipe frames, bolts are arranged in the fixing through holes, the bolts are in threaded fit with the fixing threaded holes, and the fixing threaded holes are in threaded fit with the fixing threaded holes. The upper ends of the pipe frames are connected with a rain-shielding top plate, a concentric-square-shaped air pipe is fixedly connected to the lower portion of the rain-shielding top plate, a plurality of air outlets are formed in the lower portion of the concentric-square-shaped air pipe, a fan is arranged between the two pipe frames, one side of each pipe frame is fixedly connected with a fan support, and supporting legs on the lower portion of the fan are fixedly connected to the upper portion of the fan support through bolts. By starting the fan, air can be conveyed to the concentric-square-shaped air pipe, and the air is discharged to the periphery of the photovoltaic inverter body through the air outlet to form an air curtain, so that the problem that rainwater drips and wets the surface of the photovoltaic inverter body to cause damage to the interior of the photovoltaic inverter body due to water inflow is avoided.

Description

Technical Field

[0001] The present invention relates to an inverter, and in particular to a rainproof photovoltaic inverter. Background Art

[0002] A photovoltaic inverter can convert the variable DC voltage generated by photovoltaic solar panels into AC power with the frequency of commercial power, which can be fed back to the commercial power transmission system or used for off-grid power grids.

[0003] For example, a photovoltaic inverter with the publication number of CN115500055A disclosed in the Chinese patent includes an inverter main body and a power regulator. The power regulator is detachably fixed to the inverter main body through a fixing component; the interior of the inverter main body includes a coolant circulation tank; the photovoltaic inverter includes a cooling component, and the cooling component includes a coolant storage box, a first pipeline communicated with the liquid inlet end of the coolant circulation tank, and a second pipeline communicated with the liquid outlet end of the coolant circulation tank; the other end of the first pipeline is connected to the liquid outlet of the coolant storage box through a pump body, and the other end of the second pipeline is connected to the liquid inlet of the coolant storage box. The coolant storage box, the first pipeline, the coolant circulation tank and the second pipeline form a coolant circulation loop, which is configured to cool down the inverter main body by the coolant flowing into the coolant circulation tank. It has the advantages of simple structure, convenient use, easy to move, good cooling effect, and convenient disassembly and replacement of the power regulator;

[0004] When using the above-mentioned existing photovoltaic inverter, some problems are found. First, although there is a rain shelter above, in heavy rain and strong wind weather, the rain will be blown by the wind and fall obliquely on the surface of the photovoltaic inverter, which may cause the problem of water ingress and short circuit inside the photovoltaic inverter body. Summary of the Invention

[0005] The purpose of the present invention is to provide a photovoltaic inverter to solve the existing problems mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A photovoltaic inverter includes a photovoltaic inverter body. Fixed threaded holes are provided at the back of the photovoltaic inverter body. Pipe racks are symmetrically arranged at the back of the photovoltaic inverter body. A plurality of fixed through holes are provided in the pipe racks. Bolts are arranged in the fixed through holes, and the bolts are in threaded cooperation with the fixed threaded holes. A rainproof top plate is connected to the upper end of the pipe racks. A return air duct is fixedly connected to the lower surface of the rainproof top plate. A plurality of air outlets are provided on the lower surface of the return air duct. A blower is arranged between the two pipe racks.

[0007] Preferably, a blower bracket is fixedly connected to one side of the pipe rack, and the lower feet of the blower are fixedly connected to the blower bracket through bolts.

[0008] Preferably, an extension support plate is fixedly connected to one side of the pipe rack and above the fan support, and a rain drop sensor is fixedly connected to the back of the extension support plate.

[0009] Preferably, a fixed flange is fixedly connected to the lower end of the pipe rack, and a limit hole is provided at a position near the upper edge inside the pipe rack.

[0010] Preferably, limit grooves are symmetrically provided on the lower surface of the rain shield top plate, a return spring is fixedly connected inside the limit groove, the other end of the return spring is fixedly connected to a limit pin, a displacement handle is fixedly connected to the limit pin, and the limit pin cooperates with the limit hole.

[0011] Preferably, a connection head is fixedly connected to the back of the return air duct, and insertion holes are symmetrically provided on the lower surface of the rain shield top plate, and the insertion holes cooperate with the pipe rack.

[0012] Preferably, a connection hose is fixedly connected to the fan delivery end, and the other end of the connection hose is connected to the connection head.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. By starting the fan, air can be conveyed to the return air duct and discharged through the air outlet to form an air curtain around the photovoltaic inverter body, avoiding the problem that rain drops drip and wet the surface of the photovoltaic inverter body, resulting in water ingress and damage inside the photovoltaic inverter body.

[0015] 2. By detecting whether rain drops fall on the surface of the photovoltaic inverter body through the rain drop sensor, the rain shield top plate can be used to avoid rain drops falling on the surface of the photovoltaic inverter body in light rain weather. Since the rain drop sensor does not detect rain drops, the fan will not be started, which can minimize the use of the fan and reduce energy consumption.

[0016] 3. The pipe rack and the rain shield top plate are connected in a plug-in manner, and the rain shield top plate is fixed on the pipe rack by using a limit pin, so that the rain shield top plate can be quickly disassembled and installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present invention;

[0018] Figure 2 is the overall structure diagram of the present invention;

[0019] Figure 3 is the structure diagram of the photovoltaic inverter body of the present invention;

[0020] Figure 4 is the structure diagram of the pipe rack of the present invention;

[0021] Figure 5 is the structure diagram of the rain shield top plate of the present invention;

[0022] Figure 6 This is a partial cross-sectional view of the present invention.

[0023] In the figure: 1 is the photovoltaic inverter body; 101 is the fixing threaded hole; 2 is the pipe support; 201 is the limit hole; 202 is the fixing through hole; 203 is the extension support plate; 204 is the rain drop sensor; 205 is the fan support; 206 is the fixing flange; 3 is the rain shield top plate; 301 is the return air duct; 302 is the air outlet; 303 is the connector; 304 is the insertion hole; 4 is the limit groove; 401 is the return spring; 402 is the limit pin; 403 is the displacement handle; 5 is the fan; 501 is the connecting hose. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1-6 , the present invention provides a technical solution: a photovoltaic inverter, including a photovoltaic inverter body 1, a fixing threaded hole 101 is opened at the back of the photovoltaic inverter body 1, pipe supports 2 are symmetrically arranged at the back of the photovoltaic inverter body 1, a plurality of fixing through holes 202 are opened in the pipe supports 2, bolts are arranged in the fixing through holes 202, and the bolts are in threaded cooperation with the fixing threaded holes 101. The upper end of the pipe support 2 is connected with a rain shield top plate 3, a return air duct 301 is fixedly connected under the rain shield top plate 3, a plurality of air outlets 302 are opened under the return air duct 301, and a fan 5 is arranged between the two pipe supports 2.

[0026] In this implementation, by fixing the lower end of the pipe support 2 on the ground with a pin or the like, and then screwing the bolt through the fixing through hole 202 into the fixing threaded hole 101, the two pipe supports 2 are fixed behind the photovoltaic inverter body 1. The rain shield top plate 3 is inserted into the upper end of the pipe support 2. At this time, the rain shield top plate 3 will cover the upper part of the photovoltaic inverter body 1, which can play a certain rain shielding effect. When in strong wind and heavy rain weather, starting the fan 5 can blow air into the return air duct 301. The return air duct 301 is in an overall annular shape, and the photovoltaic inverter body 1 is located in the middle of the return air duct 301. After the air enters the return air duct 301, it will be discharged through a plurality of air outlets 302 below, forming an annular air curtain. When the rain falls obliquely, it will be blocked by the air curtain, effectively avoiding the problem that the rain drops wet the surface of the photovoltaic inverter body 1 and cause water ingress and damage inside the photovoltaic inverter body 1.

[0027] Among them, in order to achieve the purpose of controlling the start of the fan 5, the present device is implemented by the following technical solutions: One side of the pipe rack 2 is fixedly connected with a fan support 205. The lower feet of the fan 5 are fixedly connected to the fan support 205 through bolts. On one side of the pipe rack 2 and above the fan support 205, an extension support plate 203 is fixedly connected. Behind the extension support plate 203, a rain drop sensor 204 is fixedly connected. At the lower end of the pipe rack 2, a fixed flange 206 is fixedly connected. Inside the pipe rack 2 and near the upper edge position, a limit hole 201 is opened. On the lower surface of the rain shield top plate 3, limit grooves 4 are symmetrically opened. Inside the limit grooves 4, a return spring 401 is fixedly connected. The other end of the return spring 401 is fixedly connected with a limit pin 402. A displacement handle 403 is fixedly connected to the limit pin 402. The limit pin 402 cooperates with the limit hole 201.

[0028] Through the cooperation of the fan support 205 and bolts, the fan 5 can be fixed between the two pipe racks 2. The height of the extension support plate 203 is close to the lower end of the photovoltaic inverter body 1, so that the rain drop sensor 204 is located close to the lower end of the photovoltaic inverter body 1. In heavy rain weather, when rain drops fall on the rain drop sensor 204, the rain drop sensor 204 will send a signal to control the fan 5 to start regularly for 30 minutes. In light rain and windless weather, the rain shield top plate 3 can be used to block the rain from dripping onto the surface of the photovoltaic inverter body 1. At this time, the rain drop sensor 204 does not detect rain drops, so the fan 5 will not be started, which can minimize the use of the fan 5 and reduce energy consumption. The return spring 401 can provide a certain thrust for the limit pin 402. The limit pin 402 will be inserted into the limit hole 201 under the thrust, and then the rain shield top plate 3 will be fixed on the pipe rack 2.

[0029] Among them, in order to achieve the purpose of delivering air into the return air duct 301, the present device is implemented by the following technical solutions: Behind the return air duct 301, a connector 303 is fixedly connected. On the lower surface of the rain shield top plate 3, insertion holes 304 are symmetrically opened. The insertion holes 304 cooperate with the pipe rack 2. The delivery end of the fan 5 is fixedly connected with a connecting hose 501. The other end of the connecting hose 501 is connected to the connector 303.

[0030] By starting the fan 5, air can be delivered into the connecting hose 501. Through the connection between the connecting hose 501 and the connector 303, the air is delivered into the return air duct 301.

[0031] Working principle and usage process of the present invention: When in use, bolts need to be passed through the fixing through holes 202 and screwed into the fixing threaded holes 101 to fix the two pipe racks 2 behind the photovoltaic inverter body 1. Subsequently, the pipe racks 2 can be fixed to the ground by using pins and other components in cooperation with the fixing flange 206. Insert the pipe racks 2 into the insertion holes 304, connect the rain shield top plate 3 with the pipe racks 2. Subsequently, the limit pin 402 will be inserted into the limit hole 201 under the action of a thrust force, thereby fixing the rain shield top plate 3 on the pipe racks 2, and the rain shield top plate 3 can be fixed at the upper end position of the pipe racks 2. Finally, connect the fan 5 with the connector 303 by using the connecting hose 501. In heavy rain weather, the rain drop sensor 204 detects raindrops and sends a signal to control the fan 5 to start regularly. The fan 5 can convey air to the return air duct 301 and discharge it through the air outlet 302 to form an air curtain around the photovoltaic inverter body 1, preventing rainwater from dripping and wetting the surface of the photovoltaic inverter body 1.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic inverter, comprising a photovoltaic inverter body (1), wherein a fixing threaded hole (101) is provided at the rear of the photovoltaic inverter body (1), and wherein: A pipe rack (2) is symmetrically arranged behind the photovoltaic inverter body (1), a plurality of fixing through holes (202) are provided in the pipe rack (2), bolts are provided in the fixing through holes (202), and the bolts are threadedly matched with the fixing threaded holes (101), a rainproof top plate (3) is connected to the upper end of the pipe rack (2), a round-shaped air duct (301) is fixedly connected below the rainproof top plate (3), a plurality of exhaust ports (302) are provided below the round-shaped air duct (301), and a fan (5) is arranged between the two pipe racks (2).

2. A photovoltaic inverter according to claim 1, characterized in that: A fan bracket (205) is fixedly connected to one side of the pipe rack (2), and the lower support leg of the fan (5) is fixedly connected to the fan bracket (205) by bolts.

3. A photovoltaic inverter according to claim 1, characterized in that: An extension support plate (203) is fixedly connected to one side of the pipe rack (2) and located above the fan bracket (205), and a raindrop sensor (204) is fixedly connected to the rear of the extension support plate (203).

4. A photovoltaic inverter according to claim 1, characterized in that: A fixing flange (206) is fixedly connected to the lower end of the pipe rack (2), and a limiting hole (201) is provided in the pipe rack (2) near the upper end edge.

5. A photovoltaic inverter according to claim 4, characterized in that: A limiting groove (4) is symmetrically provided below the rainproof top plate (3), a return spring (401) is fixedly connected in the limiting groove (4), the other end of the return spring (401) is fixedly connected to a limiting latch (402), a displacement handle (403) is fixedly connected to the limiting latch (402), and the limiting latch (402) cooperates with the limiting hole (201).

6. A photovoltaic inverter according to claim 1, characterized in that: A connector (303) is fixedly connected to the back of the circular air duct (301), and plug holes (304) are symmetrically opened under the rainproof top plate (3), and the plug holes (304) cooperate with the pipe rack (2).

7. A photovoltaic inverter according to claim 1, characterized in that: A connecting hose (501) is fixedly connected to the delivery end of the fan (5), and the other end of the connecting hose (501) is connected to a connector (303).

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