Photovoltaic inverter heat dissipation device

Abstract

The invention relates to the technical field of heat dissipation devices, in particular to a photovoltaic inverter heat dissipation device which is characterized in that a heat dissipation fan is externally connected, parallel air channels are formed in an inverter in combination with heat dissipation fins on an inverter shell and a ventilation structure, and when structural units of heating devices in the inverter are placed in parallel, the heat dissipation fins are arranged in parallel; air flow passes through each heating device at the same time, the air quantity, the air speed and the temperature of each unit are equal, the heating devices can be cooled uniformly, the wind resistance borne by the heating devices is small, the heat dissipation effect is good, and therefore an excellent heat dissipation foundation is provided for the photovoltaic inverter.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation devices, in particular to a heat dissipation device for a photovoltaic inverter. Background Art

[0002] As the core equipment in photovoltaic power generation systems, photovoltaic inverters play an important role in converting solar energy into usable electrical energy. They have been widely used around the world. They are not only used in large-scale photovoltaic power plants, but have also gradually entered the distributed power generation systems of residential and commercial buildings. Driven by the needs of different regions and application scenarios, inverter technology is also undergoing diversified and customized development to meet the needs of different power, voltage levels and environmental conditions.

[0003] Photovoltaic inverters emit a lot of heat during use, and special radiators are needed to dissipate the heat in time. Today's radiators have structures such as heat pipes, filter pipes, fans, etc. These structures and technologies usually vary according to the environment and design requirements. Their purpose is to ensure that the photovoltaic inverter can maintain an appropriate operating temperature when working at high load for a long time to ensure its stability and life.

[0004] In the prior art, it is common to arrange the cooling fan inside the inverter case, but this structure has many disadvantages during use: first, when the fan is arranged inside the inverter, it is troublesome to clean and replace, and the inverter case needs to be disassembled, and the internal components will be exposed. The photovoltaic inverter may be disturbed when it is used again; second, if the cooling fan is arranged inside the inverter, it is not easy to completely discharge all the dust that enters the photovoltaic inverter. Some of the dust will be blown out by the cooling fan, and some of the dust may not be blown out due to the position of the fan.

[0005] Based on the above reasons, the present invention designs a photovoltaic inverter heat dissipation device, which forms parallel air ducts inside the inverter through an external heat dissipation fan combined with the heat sink on the shell and the ventilation structure, so that the airflow passes through each heating device at the same time, thereby providing an excellent heat dissipation foundation for the photovoltaic inverter. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a photovoltaic inverter heat dissipation device, which forms parallel air ducts inside the inverter through an external cooling fan combined with the heat sink on the shell and the ventilation structure, so that the wind flows through each heating device at the same time, thereby providing an excellent heat dissipation foundation for the photovoltaic inverter.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a photovoltaic inverter heat dissipation device, wherein a pair of crescent-shaped vents are symmetrically arranged on an outer shell of the heat dissipation device on one side, a pair of fixed frames connected to the outer shell are arranged between the crescent-shaped vents, a fan frame is arranged on the fixed frame, fan blades are arranged on the fan frame, and a protective net is arranged on the fan blades, a power interface is arranged on the other side of the outer shell adjacent to the outer shell where the crescent-shaped vents are located, a detachable ventilation plate connected by a fixing screw 1 is arranged below the power interface, a circular air outlet is arranged on the side of the outer shell opposite to the outer shell where the crescent-shaped vents are located, a heat sink connected by a fixing screw 2 is arranged below the circular air outlet, and a temperature sensor is arranged on the circular air outlet and located on the inner side of the outer shell.

[0008] The length of the crescent-shaped vent is slightly less than the width of the outer shell.

[0009] The length of the removable ventilation panel is slightly less than the length of the outer shell.

[0010] The four sides of the outer shell have the same length and width.

[0011] The length of the circular air outlet is slightly smaller than the length of the outer shell.

[0012] The fixed frame, the detachable ventilation plate and the circular air outlet are respectively arranged on three different sides of the outer shell of the heat dissipation device.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention forms parallel air ducts inside the inverter by designing a novel photovoltaic inverter housing, using an external cooling fan, combining the heat sink and ventilation structure on the inverter housing. When the structural units of the heating devices inside the inverter are placed in parallel, the wind flows through each heating device at the same time, and the air volume, wind speed and temperature flowing through each unit are equal, so that the heating device can be cooled evenly, the wind resistance of the heating device is small, and the heat dissipation effect is good, thereby providing an excellent heat dissipation foundation for the photovoltaic inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a partial structural schematic diagram of the present invention.

[0016] Figure 3 A side view of the present invention Figure 1 .

[0017] Figure 4 A side view of the present invention Figure 2 .

[0018] Figure 5It is a top view of the present invention.

[0019] 1. Protective net; 2. Fan blades; 3. Fan frame; 4. Fixed frame; 5. Crescent vent; 6. Removable ventilation plate; 7. Fixing screw one; 8. Power interface; 9. Round air outlet; 10. Heat sink; 11. Fixing screw two; 12. Temperature sensor. DETAILED DESCRIPTION

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] See also Figures 1 to 5 The present embodiment provides a heat dissipation device for a photovoltaic inverter, wherein a pair of crescent-shaped vents 5 are symmetrically arranged on an outer shell of the heat dissipation device on one side, a pair of fixed frames 4 connected to the outer shell are arranged between the crescent-shaped vents 5, a fan frame 3 is arranged on the fixed frame 4, a fan blade 2 is arranged on the fan frame 3, a protective net 1 is arranged on the fan blade 2, a power interface 8 is arranged on the other side of the outer shell adjacent to the outer shell where the crescent-shaped vent 5 is located, a detachable ventilation plate 6 connected by a fixing screw 7 is arranged below the power interface 8, a circular air outlet 9 is arranged on the side of the outer shell opposite to the outer shell where the crescent-shaped vent 5 is located, a heat sink 10 connected by a fixing screw 11 is arranged below the circular air outlet 9, and a temperature sensor 12 is arranged on the circular air outlet 9 and located on the inner side of the outer shell.

[0022] The length of the crescent-shaped vent 5 is slightly smaller than the width of the outer shell.

[0023] The length of the detachable ventilation plate 6 is slightly smaller than the length of the outer shell.

[0024] The four sides of the outer shell have the same length and width.

[0025] The length of the circular air outlet 9 is slightly smaller than the length of the outer shell.

[0026] The fixed frame 4, the detachable ventilation plate 6 and the circular air outlet 9 are respectively arranged on three different sides of the outer shell of the heat dissipation device.

[0027] The present invention blows air into the device through the fan blades 2. Since the crescent-shaped vent 5 is arranged next to the fan blades 2, the air exhausted at this position is immediately exhausted by the crescent-shaped vent 5, thereby achieving the effect of heat dissipation. The temperature sensor 12 arranged on the circular air outlet 9 is connected to the sampling board in the photovoltaic inverter. When the temperature reaches a certain value, the running speed of the fan blades 2 can be automatically adjusted according to the setting to meet the needs of different environments and designs. The fan blades 2 are driven by an electric motor, and the fan blades 2 and the electric motor together form a heat dissipation device, and the power supply of the heat dissipation device is provided by an external power supply connected to the power socket 8.

[0028] By setting a protective net 1 on the outside of the fan blades 2, the fan is prevented from being exposed and has a certain dust-proof effect. Since the fixed frame 4 is connected to the inside of the inverter, it is convenient to disassemble and clean the fan when it is necessary, and there is no need to disassemble the inverter housing, which will not cause unnecessary pollution to the components inside the inverter housing.

[0029] The fan blades 2 blow air toward the heating components inside the photovoltaic inverter. At this time, the circular air outlet 9 and the detachable ventilation plate 6 can form a good airflow with the wind blown by the fan blades 2. Air continuously flows in and out of the inverter housing to dissipate heat for the internal components of the inverter.

[0030] The design of the detachable ventilation plate 6 is also to enable air to flow through the surface of the detachable ventilation plate 6 more effectively, taking away heat, effectively reducing the operating temperature of the photovoltaic inverter, and improving stability and reliability.

[0031] The present invention adopts an aluminum alloy heat sink 10, which utilizes the high thermal conductivity of aluminum alloy so that the heat sink 10 can quickly conduct the heat generated inside the inverter to the surface, which is conducive to the rapid dissipation of heat. At the same time, aluminum alloy has a low density, so the heat sink 10 can reduce the weight of the entire inverter while ensuring strength, which is conducive to the installation, disassembly and maintenance of the equipment, and can effectively improve the heat dissipation efficiency and overall performance of the inverter.

[0032] The above are only preferred embodiments of the present invention, which are only used to help understand the method and core ideas of the present application. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0033] The present invention solves the defects of the prior art photovoltaic inverters that use radiators for heat dissipation, such as troublesome cleaning and replacement, additional interference to components, and inability to discharge dust. By externally connecting a heat dissipation fan and combining it with a heat sink provided on the photovoltaic inverter housing, a more reasonable air duct is formed inside the inverter. The airflow passes through each heating device, and the air volume, wind speed, and temperature of each unit are equal, which can cool the heating device evenly, thereby achieving efficient and stable heat dissipation without disassembling the inverter, thereby improving the service life and stability of the inverter and reducing maintenance costs to a certain extent.

Claims

1. A photovoltaic inverter heat dissipation device, characterized in that: A pair of crescent-shaped vents (5) are symmetrically arranged on one side of the outer shell of the heat dissipation device, a pair of fixed frames (4) connected to the outer shell are arranged between the crescent-shaped vents (5), a fan frame (3) is arranged on the fixed frame (4), fan blades (2) are arranged on the fan frame (3), and a protective net (1) is arranged on the fan blades (2), a power interface (8) is arranged on the other side of the outer shell adjacent to the outer shell where the crescent-shaped vents (5) are located, a detachable ventilation plate (6) connected by a fixing screw (7) is arranged below the power interface (8), a circular air outlet (9) is arranged on the side of the outer shell opposite to the outer shell where the crescent-shaped vents (5) are located, a heat sink (10) connected by a fixing screw (11) is arranged below the circular air outlet (9), and a temperature sensor (12) is arranged on the circular air outlet (9) and located inside the outer shell.

2. The photovoltaic inverter heat dissipation device according to claim 1, characterized in that: The length of the crescent-shaped ventilation opening (5) is slightly smaller than the width of the outer shell.

3. The photovoltaic inverter heat dissipation device according to claim 1, characterized in that: The length of the detachable ventilation plate (6) is slightly smaller than the length of the outer shell.

4. The photovoltaic inverter heat dissipation device according to claim 1, characterized in that: The four sides of the outer shell have the same length and width.

5. The photovoltaic inverter heat dissipation device according to claim 1, characterized in that: The length of the circular air outlet (9) is slightly smaller than the length of the outer shell.

6. The photovoltaic inverter heat dissipation device according to claim 1, characterized in that: The fixed frame (4), the detachable ventilation plate (6) and the circular air outlet (9) are respectively arranged on three different side surfaces of the outer shell of the heat dissipation device.

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