A ventilation duct and a photovoltaic inverter

Abstract

The utility model is applicable to the technical field of photovoltaic inverters, and provides a ventilation duct and a photovoltaic inverter. The ventilation duct includes: a hood, an air duct is formed in the hood, and the hood has an air inlet and an air outlet connected to the air duct; a mounting card, the mounting card is arranged in the air duct, and the bearing surface of the mounting card is arranged toward the air inlet. A first filter device, the first filter device is detachably connected to the mounting card; a second filter device, the second filter device is detachably connected to the mounting card. By setting the mounting card, when the first filter device and the second filter device are cleaned and maintained, they only need to be pulled out from the mounting card by extraction, and the first filter device and the second filter device can be removed from the air duct of the ventilation duct, which simplifies the disassembly process of the first filter device and the second filter device, and achieves the effect of improving the cleaning and maintenance efficiency and saving costs.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic inverters, and in particular relates to a ventilation duct and a photovoltaic inverter. Background Art

[0002] Photovoltaic inverters are devices that convert direct current generated by solar panels into alternating current, which is used to convert solar energy into electricity that can be used in homes or industries. Photovoltaic inverters usually have air ducts, which are usually designed to leave enough space around the inverter to ensure good air flow, thereby keeping the operating temperature of the inverter within a safe range. Protective devices are usually set in the air duct of the photovoltaic inverter to prevent particulate matter in the air from entering the air duct and blocking the air duct.

[0003] However, in the prior art, when the protective device in the wind duct of the photovoltaic inverter needs to be disassembled and cleaned, the protective device is difficult to disassemble and is time-consuming and laborious. Utility Model Content

[0004] The utility model provides a ventilation duct and a photovoltaic inverter, aiming to solve the problem that a protective filter device in an air duct of the photovoltaic inverter is difficult to disassemble and clean.

[0005] The embodiment of the utility model is implemented as follows: the ventilation duct provided by the utility model includes: a hood, a duct is formed in the hood, the hood has an air inlet and an air outlet connected to the duct; a mounting card, the mounting card is arranged in the duct, and the bearing surface of the mounting card is arranged toward the air inlet; a first filter device, the first filter device is detachably connected to the mounting card; and a second filter device, the second filter device is detachably connected to the mounting card.

[0006] Furthermore, the filtering aperture of the first filtering device is larger than the filtering aperture of the second filtering device.

[0007] Furthermore, the first filter device is connected to the bearing surface of the mounting card;

[0008] The second filter device is connected to the first filter device and is spaced apart from the bearing surface of the mounting card.

[0009] Furthermore, a fixing hole is provided on the outer edge of the mounting card plate, and the mounting card plate is fixed in the wind cover through the fixing hole.

[0010] Furthermore, the mounting card plate is arranged at the air inlet.

[0011] Furthermore, the air inlet and the air outlet are vertically arranged.

[0012] Furthermore, the second metal outer frame has a plurality of first openings.

[0013] Furthermore, the first filter device is a steel mesh; the second filter device is dust-proof cotton.

[0014] Furthermore, the mounting bracket is a U-shaped mounting bracket.

[0015] Furthermore, the wind hood is a curved pipe wind hood.

[0016] The embodiment of the utility model further provides a photovoltaic inverter, which includes: an inverter body and the above-mentioned ventilation duct arranged on the inverter body.

[0017] The ventilation duct and photovoltaic inverter provided by the embodiment of the utility model are provided with a mounting card plate in the air duct of the ventilation duct, and the first filter device and the second filter device are detachably connected to the mounting card plate. Therefore, through the setting of the mounting card plate, when the first filter device and the second filter device need to be cleaned and maintained, they can be removed from the air duct of the ventilation duct by simply extracting them from the mounting card plate, thereby simplifying the disassembly process of the first filter device and the second filter device, and achieving the effect of improving the cleaning and maintenance efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the exploded structure of a ventilation duct provided by an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional structural diagram of a ventilation duct provided by an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a photovoltaic inverter provided in one embodiment of the utility model.

[0021] Explanation of main component symbols: 100, ventilation duct; 200, photovoltaic inverter; 10, wind hood; 11, air duct; 20, mounting bracket; 21, fixing hole; 30, first filter device; 40, second filter device; A, air inlet; B, air outlet. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] In order to ensure that the temperature of the photovoltaic inverter remains within a safe range during operation, the photovoltaic inverter is usually designed with a special air duct. When designing these air ducts, sufficient space is reserved around the inverter to ensure that the air can circulate smoothly, thereby effectively dissipating heat and preventing the equipment from overheating.

[0024] In the air duct, a protective filter device is usually installed to prevent dust and particles in the air from entering the air duct and causing blockage. These protective filters ensure the normal operation and life of the inverter to a certain extent. However, in the prior art, the protective filter devices in the air duct often lack a convenient disassembly mechanism. When these protective filters need to be cleaned and maintained, disassembly is cumbersome and requires a lot of time and effort. This not only increases the difficulty and cost of maintenance, but may also affect the normal operation and efficiency of the photovoltaic inverter.

[0025] Therefore, in order to solve the above technical problems, the utility model provides a ventilation duct and a photovoltaic inverter. The ventilation duct of the utility model can be applied to a photovoltaic inverter. In the utility model, a mounting card is provided in the air duct of the ventilation duct, and the first filter device and the second filter device are detachably connected to the mounting card. Therefore, by providing the mounting card, when the first filter device and the second filter device need to be cleaned and maintained, the first filter device and the second filter device can be removed from the air duct of the ventilation duct by simply extracting them from the mounting card, thereby simplifying the disassembly process of the first filter device and the second filter device, and achieving the effect of improving the cleaning and maintenance efficiency and saving costs.

[0026] Embodiment 1

[0027] Please refer to Figure 1 to Figure 2 The ventilation duct 100 of the embodiment of the utility model comprises: an air hood 10, a mounting card plate 20, a first filter device 30 and a second filter device 40. An air duct 11 is formed in the air hood 10, and the air hood 10 has an air inlet A and an air outlet B connected to the air duct 11. The mounting card plate 20 is arranged in the air hood 10, and the bearing surface of the mounting card plate 20 is arranged toward the air inlet A; and the first filter device 30 is detachably connected to the mounting card plate 20, and the second filter device 40 is detachably connected to the mounting card plate 20.

[0028] Among them, the first filter device 30 is used to filter and intercept large floating particles such as catkins and flower crumbs, so as to prevent large floating particles from entering the vents of the photovoltaic inverter 200 or other equipment from the ventilation duct 100. The second filter device 40 is used to filter and intercept smaller floating particles such as dust, so as to prevent small floating particles from entering the vents of the photovoltaic inverter or other equipment from the ventilation duct 100. Through the arrangement of the first filter device 30 and the second filter device 40, two layers of filtration are formed in the air duct 11 of the ventilation duct 100, providing a comprehensive protection effect for the ventilation duct 100. This double-layer filtration design ensures the cleanliness of the internal environment of the equipment and significantly improves the reliability and life of the photovoltaic inverter and other related equipment. At the same time, the double-layer filtration formed by the first filter device 30 and the second filter device 40 also reduces the risk of failure of the photovoltaic inverter or other equipment due to blockage of floating particles, thereby optimizing the overall operating efficiency and performance of the equipment.

[0029] Moreover, the first filter device 30 and the second filter device 40 are both detachably connected to the mounting card plate 20, and the mounting card plate 20 is arranged in the air duct 11. The specific arrangement of the first filter device 30 and the second filter device 40 is to insert them into the mounting card plate 20, and the mounting card plate 20 is arranged in the air duct 11 of the ventilation duct 100. Therefore, the ventilation duct 100 is provided with the mounting card plate 20 in its air duct 11, and the first filter device 30 and the second filter device 40 are detachably connected to the mounting card plate 20. Therefore, when the first filter device 30 and the second filter device 40 need to be cleaned and maintained, the first filter device 30 and the second filter device 40 only need to be extracted by extraction, and the first filter device 30 and the second filter device 40 can be removed from the ventilation duct 100, which simplifies the disassembly process of the first filter device 30 and the second filter device 40, and achieves the effect of improving the cleaning and maintenance efficiency and saving costs.

[0030] Among them, the mounting card plate 20 can be specifically a U-shaped mounting card plate 20. The U-shaped design provides good structural stability, so the U-shaped mounting card plate 20 can effectively fix and install the first filter device 30 and the second filter device 40, ensuring that the first filter device 30 and the second filter device 40 can be firmly set in the air duct 11; and the setting of the U-shaped mounting card plate 20 can make the installation and disassembly process of the first filter device 30 and the second filter device 40 very simple, and it is only necessary to insert the first filter device 30 and the second filter device 40 into the U-shaped groove and fix them, which greatly reduces the time and difficulty of installing and disassembling the first filter device 30 and the second filter device 40, and achieves the effect of improving the cleaning and maintenance efficiency.

[0031] Furthermore, in some optional embodiments, the wind hood 10 can be a curved pipe wind hood 10, which constitutes the main part of the ventilation duct 100. Compared with a vertical shell, the curved pipe wind hood 10 can make more efficient use of space and can be installed along a curved path during installation, while the vertical wind hood 10 requires more space to accommodate.

[0032] Embodiment 2

[0033] Based on the first embodiment, in some optional embodiments, in combination with reference to Figure 1 to Figure 2 , the filtering pore size of the first filtering device 30 is larger than the filtering pore size of the second filtering device 40 .

[0034] Specifically, because the first filter device 30 is used to filter and intercept large floating particles such as catkins and flower scraps, and the second filter device 40 is used to filter and intercept smaller floating particles such as dust, the filtration aperture of the first filter device 30 and the filtration aperture of the second filter device 40 should be set larger than the filtration aperture of the second filter device 40, so as to effectively filter and process particles and floating objects of different sizes.

[0035] And, further, if Figure 1 As shown, in order to achieve the hierarchical filtering protection in the air duct 11 of the ventilation duct 100. In some optional embodiments, the first filter device 30 is connected to the bearing surface of the mounting card plate 20; the second filter device 40 is connected to the first filter device 30 and is spaced from the bearing surface of the mounting card plate 20. That is, for the position setting of the first filter device 30 and the second filter device 40, the first filter device 30 is directly set on the bearing surface of the mounting card plate 20, and the second filter device 40 is directly set on the first filter device 30. And the bearing surface of the mounting card plate 20 is set toward the air inlet A.

[0036] Therefore, the air passing through the air inlet A of the ventilation duct 100 will first pass through the first filter device 30 to complete the filtration and interception of large floating particles, and then pass through the second filter device 40 to complete the filtration and interception of small floating particles. In this way, the setting of filtering by the first filter device 30 first helps to filter larger particles first, and then the second filter device 40 performs further filtering of small particles, thereby achieving the effect of improving the filtration efficiency and the service life of the equipment.

[0037] Specifically, the first filter device 30 can be set as a steel mesh; the second filter device 40 can be set as dustproof cotton. The first filter device 30 is set as a steel mesh to effectively filter large particles and impurities, and further protect and support the subsequent dustproof cotton; the second filter device 40 is set as dustproof cotton to filter the air more finely, achieving the effect of ensuring the filtering quality.

[0038] Embodiment 3

[0039] Based on the first embodiment, in some optional embodiments, such as Figure 1 and Figure 2 As shown, a fixing hole 21 is provided on the outer edge of the mounting card plate 20 , and the mounting card plate 20 is fixed in the wind cover 10 through the fixing hole 21 .

[0040] Specifically, with regard to the setting method of the mounting card 20, a fixing hole 21 is provided on the outer edge of the mounting card 20. When it is set and installed, it is directly connected to the inner wall of the wind hood 10 through the fixing hole 21, so that the mounting card 20 can be fixedly set in the wind hood 10, so that the first filter device 30 and the second filter device 40 installed on the mounting card 20 can be stably set in the air duct 11 of the ventilation duct 100, preventing the first filter device 30 and the second filter device 40 from deformation or displacement, thereby achieving the effect of stable filtering.

[0041] Furthermore, a plurality of fixing holes 21 may be provided on the outer edge of the mounting card plate 20 , so as to further enable the mounting card plate 20 to be stably disposed in the wind shield 10 .

[0042] Embodiment 4

[0043] Based on the first embodiment, in some optional embodiments, such as Figure 1 and Figure 2 As shown, the mounting plate 20 is arranged at the air inlet A.

[0044] Specifically, in the embodiment of the present application, in order to achieve the best air filtering effect, the mounting plate 20 is installed at the air inlet A of the ventilation duct 100. Therefore, when the air just enters the ventilation duct 100, the first filter device 30 and the second filter device 40 can filter it, which can achieve more effective filtering of particulate matter and floating objects, and keep the air in the ventilation duct 100 flowing smoothly, reducing the air resistance.

[0045] Embodiment 5

[0046] Based on the first embodiment, in some optional embodiments, such as Figure 1 and Figure 2As shown, the air inlet A and the air outlet B of the ventilation duct 100 are arranged vertically. In this way, the air flow distance from the air inlet A to the air outlet B can be increased by vertically arranging the air inlet A and the air outlet B. The air needs to pass through a longer path during the flow process. The air needs to enter from the air inlet and pass through the air duct 11 along a vertical or inclined path to reach the air outlet B, thereby achieving a longer residence time of the air inside the ventilation duct 100. The first filter device 30 and the second filter device 40 can thus have more time to filter, thereby achieving a better filtering effect.

[0047] Embodiment 6

[0048] like Figures 1 to 3 As shown, the photovoltaic inverter 200 of the embodiment of the utility model includes: an inverter body and the ventilation duct 100 described in any one of Embodiments 1 to 5 arranged on the inverter body.

[0049] Therefore, the photovoltaic inverter of the embodiment of the utility model has a mounting card plate 20 provided in the ventilation duct 100, and the first filter device 30 and the second filter device 40 are detachably connected to the mounting card plate 20. Therefore, through the setting of the mounting card plate 20, when the first filter device 30 and the second filter device 40 need to be cleaned and maintained, the first filter device 30 and the second filter device 40 can be removed from the ventilation duct 100 by simply pulling them out from the mounting card plate 20, thereby simplifying the disassembly process of the first filter device 30 and the second filter device 40, thereby achieving the effect of improving the cleaning and maintenance efficiency and saving costs.

[0050] In the description of this specification, the description with reference to the terms "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] In addition, the above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A ventilation duct, characterized in that: include: A wind hood, wherein a wind duct is formed in the wind hood, and the wind hood has an air inlet and an air outlet communicated with the air duct; A mounting card plate, the mounting card plate is arranged in the air duct, and the bearing surface of the mounting card plate is arranged toward the air inlet; A first filter device, the first filter device is detachably connected to the mounting card plate; A second filter device is detachably connected to the mounting card plate.

2. The ventilation duct according to claim 1, characterized in that: The filtering aperture of the first filtering device is larger than the filtering aperture of the second filtering device.

3. The ventilation duct according to claim 2, characterized in that: The first filter device is connected to the bearing surface of the mounting card plate; The second filter device is connected to the first filter device and is spaced apart from the bearing surface of the mounting card.

4. The ventilation duct according to claim 1, characterized in that: A fixing hole is arranged on the outer edge of the mounting card plate, and the mounting card plate is fixedly arranged in the wind cover through the fixing hole.

5. The ventilation duct according to claim 2, characterized in that: The mounting card plate is arranged at the air inlet.

6. The ventilation duct according to claim 1, characterized in that: The air inlet and the air outlet are arranged vertically.

7. The ventilation duct according to claim 2, characterized in that: The first filter device is a steel mesh; the second filter device is dustproof cotton.

8. The ventilation duct according to claim 1, characterized in that: The mounting card plate is a U-shaped mounting card plate.

9. The ventilation duct according to claim 1, characterized in that: The wind hood is a curved pipe wind hood.

10. A photovoltaic inverter, characterized in that: include: An inverter body and a ventilation duct according to any one of claims 1 to 9 arranged on the inverter body.

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