Heat dissipation structure of photovoltaic inverter

Abstract

The utility model discloses a heat dissipation structure of a photovoltaic inverter, which relates to the technical field of photovoltaic inverters and comprises a shell and a rack, the rack extending to the outer side is arranged in the shell, heat dissipation fins are arranged in the shell, a cleaning frame is arranged on the outer side of the heat dissipation fins in the shell, and the cleaning frame is connected with the rack. A sliding rod penetrating through the cleaning frame is welded to the inner wall of the shell, and a threaded rod connected with the shell is arranged at the position, located on one side of the sliding rod, of the interior of the cleaning frame in a penetrating and sleeving mode. A second bevel gear is driven by a rotating block to rotate, the second bevel gear drives a first bevel gear and a threaded rod to rotate, the threaded rod drives a cleaning frame to move, and dust in a heat dissipation groove is cleaned while the cleaning frame moves, so that when the heat dissipation structure of the photovoltaic inverter is cleaned, the heat dissipation efficiency is improved, and the heat dissipation efficiency is improved. The photovoltaic inverter does not need to be disassembled, so that the heat dissipation structure of the photovoltaic inverter is convenient to clean, and the heat dissipation effect of the photovoltaic inverter is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic inverters, in particular to a heat dissipation structure of a photovoltaic inverter. Background Art

[0002] Photovoltaic inverters can convert the variable DC voltage generated by photovoltaic solar panels into AC power at mains frequency, which can be fed back to the commercial power transmission system or used for off-grid power grids. Photovoltaic inverter heat sink The inverter heat dissipation system mainly includes heat sinks, cooling fans, thermal grease and other materials. There are two main ways to dissipate heat: one is natural cooling and the other is forced air cooling.

[0003] According to a heat dissipation structure of an inverter and an inverter with publication number CN212305962U, the heat dissipation structure of the inverter includes: a radiator, the radiator including heat fins, the heat fins are connected to the case of the inverter; a wind shield, the wind shield is connected to the case and covers the radiator, a ventilation cavity is provided between the wind shield and the case, the wind shield includes a first side panel and a second side panel arranged opposite to each other, the first side panel is provided with an air inlet, the second side panel is provided with an air outlet, the ventilation cavity is connected between the air outlet and the air inlet; a fan, the fan is connected to the wind shield and is located at the air inlet, the fan can allow outside air to pass into the ventilation cavity, the heat generated by the internal module of the inverter is transferred to the radiator, and the heat on the heat dissipation fins is taken away by the fan.

[0004] The above patent mentions that the heat generated by the internal module of the inverter is transferred to the radiator, and the heat on the cooling fins is taken away by the fan. The fan drives the outside cold air to dissipate the heat of the cooling fins, and the flowing cold air passes quickly over the surface of the cooling fins. The cold air is not in sufficient contact with the cooling fins, resulting in poor heat dissipation effect. Utility Model Content

[0005] The purpose of the utility model is to provide a heat dissipation structure of a photovoltaic inverter to solve the problem of poor heat dissipation effect of the heat dissipation structure of the photovoltaic inverter currently on the market proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation structure of a photovoltaic inverter, comprising a shell and a frame, the shell is provided with a frame extending to the outside, the shell is provided with a heat sink, the shell is provided with a cleaning frame on the outside of the heat sink, the shell is provided with a sliding rod penetrating the cleaning frame on the inner wall of the shell, a threaded rod connected to the shell is sleeved through one side of the sliding rod inside the cleaning frame, and a first bevel gear is welded to one end of the threaded rod.

[0007] Preferably, a second bevel gear is provided on one side of the first bevel gear, and a rotating block extending to the outside of the housing is welded inside the second bevel gear.

[0008] Preferably, heat dissipation grooves are provided on both sides of the inner wall of the shell located outside the cleaning frame, a connecting groove is provided on the outer wall of the shell located outside the rotating block, and a cover plate is connected to one side of the heat sink inside the shell by bolts.

[0009] Preferably, a heat dissipation fan is installed inside the frame by bolts, and a guide pipe is provided on one side of the frame.

[0010] Preferably, a heat conducting sheet is arranged at one end of the heat sink away from the frame, and an inverter mainboard is mounted on one end of the heat conducting sheet away from the heat sink via bolts.

[0011] Preferably, a dispersion groove is provided inside the heat sink.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the heat dissipation structure of the photovoltaic inverter needs to be cleaned, the second bevel gear is driven to rotate by the rotating block, the second bevel gear drives the first bevel gear and the threaded rod to rotate, and the threaded rod drives the cleaning frame to move. The cleaning frame moves while cleaning the dust inside the heat dissipation groove, so that when the heat dissipation structure of the photovoltaic inverter is cleaned, the photovoltaic inverter does not need to be disassembled, thereby making the heat dissipation structure of the photovoltaic inverter easy to clean, thereby ensuring the heat dissipation effect of the photovoltaic inverter.

[0014] 2. When the heat dissipation structure of the photovoltaic inverter needs to dissipate heat for the inverter mainboard, the inverter mainboard transfers the heat to the heat conducting sheet, the heat conducting sheet transfers the heat to the inside of the heat sink, and the cold air from the outside is blown into the inside of the dispersion tank by the heat dissipation fan, and the cold air is dispersed by the dispersion tank, the cold air is fully in contact with the heat sink, and absorbs the heat inside the heat sink, and the hot air is discharged through the two sides of the heat sink, and the hot air is discharged through the heat dissipation tank, and the contact area between the cold air and the heat sink is increased, thereby improving the heat dissipation effect of the heat dissipation structure, ensuring smooth air circulation in the photovoltaic inverter, and thereby effectively improving the heat dissipation efficiency of the radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a three-dimensional cutaway view of the utility model;

[0017] Figure 3 It is a top view cutaway diagram of the utility model;

[0018] Figure 4 It is a three-dimensional diagram of the cleaning rack of the utility model.

[0019] In the figure: 1, shell; 101, heat sink; 102, connecting groove; 103, cover plate; 2, rack; 201, heat dissipation fan; 202, guide tube; 3, heat sink; 301, heat conductive sheet; 302, inverter mainboard; 303, dispersion groove; 4, cleaning rack; 401, sliding rod; 402, threaded rod; 403, first bevel gear; 404, second bevel gear; 405, rotating block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a technical solution: a heat dissipation structure of a photovoltaic inverter, including a shell 1 and a frame 2, the shell 1 is provided with a frame 2 extending to the outside, the shell 1 is provided with a heat sink 3, the shell 1 is provided with a cleaning frame 4 on the outside of the heat sink 3, the shell 1 is welded with a sliding rod 401 penetrating the cleaning frame 4 on the inner wall of the shell 1, the cleaning frame 4 is provided with a threaded rod 402 connected to the shell 1 on one side of the sliding rod 401, and one end of the threaded rod 402 is welded with a first bevel gear 403.

[0022] See also Figure 1 and Figure 4 It can be seen that a second bevel gear 404 is provided on one side of the first bevel gear 403, a rotating block 405 extending to the outside of the shell 1 is welded inside the second bevel gear 404, the inner wall of the cleaning frame 4 is slidingly connected to the outer wall of the sliding rod 401, the inner wall of the cleaning frame 4 is threadedly connected to the outer wall of the threaded rod 402, and the first bevel gear 403 is meshingly connected to the second bevel gear 404.

[0023] During specific implementation, when it is necessary to clean the heat dissipation slot 101 of the heat dissipation structure of the photovoltaic inverter, the operator rotates the rotating block 405 forward, and the rotating block 405 drives the second bevel gear 404 to rotate forward. The second bevel gear 404 rotates forward and drives the first bevel gear 403 meshing with the second bevel gear 404 to reverse. The reverse rotation of the first bevel gear 403 drives the threaded rod 402 to reverse. The reverse rotation of the threaded rod 402 drives the cleaning rack 4 threadedly connected to the threaded rod 402 to move, and the cleaning rack 4 slides on the outer wall of the sliding rod 401. While the cleaning rack 4 moves, the dust inside the heat dissipation slot 101 is cleaned, so that the heat dissipation structure of the photovoltaic inverter does not need to be disassembled when cleaning, thereby making the heat dissipation structure of the photovoltaic inverter easy to clean, thereby ensuring the heat dissipation effect of the photovoltaic inverter.

[0024] See also Figure 1 , Figure 2 and Figure 3 It can be seen that heat dissipation grooves 101 are provided on both sides of the inner wall of the shell 1 located on the outside of the cleaning frame 4, and a connecting groove 102 is provided on the outer wall of the shell 1 located on the outside of the rotating block 405. The interior of the shell 1 is located on one side of the heat sink 3 and is connected to a cover plate 103 by bolts, and the cleaning frame 4 is slidably connected to the heat dissipation groove 101.

[0025] In specific implementation, by providing the cover plate 103 , it is convenient for operators to inspect and maintain the interior of the photovoltaic inverter.

[0026] See also Figure 2 and Figure 3 It can be seen that a heat dissipation fan 201 is installed inside the rack 2 by bolts, and a guide pipe 202 is provided on one side of the rack 2.

[0027] During specific implementation, the wind generated by the heat dissipation fan 201 is guided by the guide pipe 202, thereby concentrating the wind force.

[0028] See also Figure 2 and Figure 3 It can be seen that a heat conducting sheet 301 is provided at one end of the heat sink 3 away from the frame 2 , an inverter mainboard 302 is installed via bolts at one end of the heat conducting sheet 301 away from the heat sink 3 , and a dispersion groove 303 is provided inside the heat sink 3 .

[0029] In specific implementation, when the heat dissipation structure of the photovoltaic inverter needs to dissipate heat for the inverter mainboard 302, the inverter mainboard 302 transfers the heat to the heat conductive sheet 301, and the heat conductive sheet 301 transfers the heat to the inside of the heat sink 3, and the heat dissipation fan 201 is started, and the heat dissipation fan 201 pumps the external cold air into the inside of the frame 2, and the cold air enters the inside of the dispersion groove 303 through the guide pipe 202, and the cold air is dispersed through the dispersion groove 303, so that the cold air is fully in contact with the heat sink 3 and absorbs the heat inside the heat sink 3, and the hot air is discharged through the two sides of the heat sink 3, and the hot air is discharged through the heat dissipation groove 101. By setting the frame 2, the heat dissipation fan 201, the guide pipe 202 and the dispersion groove 303, the contact area between the cold air and the heat sink 3 is increased, thereby improving the heat dissipation effect of the heat dissipation structure, ensuring smooth air circulation in the photovoltaic inverter, and effectively improving the heat dissipation efficiency of the radiator.

[0030] To sum up: when the heat dissipation structure of the photovoltaic inverter is in use, the heat sink 3 absorbs the heat conducted by the heat conductive sheet 301 and the inverter mainboard 302, and the external cold air is blown into the interior of the dispersion slot 303 through the heat dissipation fan 201. The cold air fully contacts the heat sink 3 and absorbs the heat inside the heat sink 3. The hot air is discharged through the two sides of the heat sink 3 and discharged through the heat dissipation slot 101.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat dissipation structure of a photovoltaic inverter, comprising a housing (1) and a frame (2), characterized in that: The shell (1) is provided with a frame (2) extending to the outside, the shell (1) is provided with a heat sink (3), the shell (1) is provided with a cleaning frame (4) located outside the heat sink (3), the shell (1) is provided with a sliding rod (401) penetrating the cleaning frame (4) welded to the inner wall of the shell (1), the cleaning frame (4) is provided with a threaded rod (402) connected to the shell (1) and sleeved on one side of the sliding rod (401), and one end of the threaded rod (402) is welded with a first bevel gear (403).

2. The heat dissipation structure of a photovoltaic inverter according to claim 1, characterized in that: A second bevel gear (404) is provided on one side of the first bevel gear (403), and a rotating block (405) extending to the outside of the housing (1) is welded inside the second bevel gear (404).

3. The heat dissipation structure of a photovoltaic inverter according to claim 2, characterized in that: Both sides of the inner wall of the shell (1) are located outside the cleaning frame (4) and are provided with heat dissipation grooves (101); the outer wall of the shell (1) is located outside the rotating block (405) and is provided with a connection groove (102); and the inside of the shell (1) is located on one side of the heat sink (3) and is connected to a cover plate (103) by bolts.

4. The heat dissipation structure of a photovoltaic inverter according to claim 1, characterized in that: A heat dissipation fan (201) is installed inside the frame (2) by means of bolts, and a guide pipe (202) is provided on one side of the frame (2).

5. The heat dissipation structure of a photovoltaic inverter according to claim 1, characterized in that: A heat conducting sheet (301) is provided at one end of the heat sink (3) away from the frame (2), and an inverter mainboard (302) is mounted on one end of the heat conducting sheet (301) away from the heat sink (3) via bolts.

6. The heat dissipation structure of a photovoltaic inverter according to claim 5, characterized in that: A dispersion groove (303) is provided inside the heat sink (3).

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