Photovoltaic inverter protection device
By designing a photovoltaic inverter protection device including a protective shell, a dust blocking box and a dust collecting tank, the problem of inverter prone to accumulation of dust and short circuit in sand and dust environments is solved, and effective dust protection and ventilation design is achieved , extends the service life of the equipment.
Patent Information
- Application Number
- CN202420310316.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-20
AI Technical Summary
Photovoltaic inverters are prone to accumulation of dust in sand and dust environments, especially in Gobi Desert areas. The combination of sand and dust and moisture will cause short circuits in the IGBT drive board, affecting the normal operation of the equipment.
A photovoltaic inverter protection device is designed, including a protective shell, a dust blocking box and a dust collecting tank. The protective shell is equipped with ventilation holes and dust blocking boxes, and the dust blocking box is equipped with a dust blocking plate and a second air vent, and the dust collecting groove is used to collect dust.
The device maintains ventilation inside the inverter through the cooperation of the ventilation hole and the dust blocking box, while effectively blocking most of the dust from entering and protecting the inverter; the design of the dust blocking plate and the second ventilation hole makes the device both ventilated and blocked. Dust extends the service life of the equipment.
Smart Images
Figure CN222484559U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic inverter protection devices, and specifically relates to a photovoltaic inverter protection device. 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 commercial power transmission systems or used by off-grid power grids. Photovoltaic inverters are important components of photovoltaic array systems and can be used with general AC-powered equipment. Photovoltaic power stations located in the Gobi Desert are dusty and dusty, and the inverters are prone to dust accumulation. The inverter IGBT driver board will also have varying degrees of dust accumulation. If the weather is humid, the dust and moisture will blend, which can easily cause the IGBT driver board to short-circuit. For this reason, a photovoltaic inverter protection device is proposed. Utility Model Content
[0003] The purpose of the utility model is to provide a photovoltaic inverter protection device to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a photovoltaic inverter protection device, comprising a protective shell, a switch door is arranged on the front side of the protective shell, a photovoltaic inverter is installed in the protective shell, the switch door is closed under normal conditions, ventilation holes are evenly arranged on the symmetrical side walls of the protective shell, a dust shield box is fixedly connected to the symmetrical inner side wall of the protective shell and at a position opposite to the ventilation holes, a docking hole and a first ventilation hole are arranged on the symmetrical side walls of the dust shield box, the docking hole and the first ventilation hole are staggered, and the docking hole and the ventilation hole are staggered. The holes are connected, and the docking holes are connected with the ventilation holes, so that the dust shield box as a whole is connected with the ventilation holes. The cooperation of the two structures makes the protective shell ventilated while blocking most of the dust from entering, effectively protecting the inverter inside. A dust shield plate is fixedly connected to the inner side of the dust shield box, and second ventilation holes are evenly arranged on the dust shield plate. When dust enters the inner side of the dust shield box through the ventilation holes, most of the dust is blocked by the dust shield plate, and the setting of the second ventilation holes makes the dust shield box permeable to air and a small amount of dust. The protective device as a whole can be ventilated while blocking most of the dust from entering.
[0005] Preferably, the dust shield plate is arranged at an angle in the dust shield box, and the two ends of the dust shield plate are respectively fixedly connected to the symmetrical inner walls of the dust shield box. The dust shield plate is arranged at an angle, and the dust shield area is larger, and a certain dust collecting space is provided between the dust shield plate and the side wall of the dust shield box to allow dust to fall.
[0006] Preferably, the second air hole vertically penetrates the dust shield plate, and the second air hole is inclined relative to the air inlet docking hole or the first air hole, so dust is not easy to enter, and the dust shielding effect is good.
[0007] Preferably, a dust collecting groove is provided at the bottom of the dust shield box, and the dust collecting groove is a strip-shaped groove structure. The dust collecting groove is slidably connected to the dust shield box, and the dust blocked by the dust shield plate falls into the dust collecting groove and is uniformly collected, which is convenient for unified cleaning.
[0008] Preferably, a handle is fixedly connected to the outer side wall of the dust collecting trough, and the arrangement of the handle facilitates pulling the dust collecting trough in and out.
[0009] Preferably, a sliding bar is fixedly connected to the outer wall of the dust collecting trough, and a sliding groove matched with the sliding bar is opened on the inner wall of the dust shielding box. The sliding bar is slidably connected in the sliding groove. The arrangement of the sliding bar and the sliding groove makes the dust collecting trough smoother to be pulled in and out.
[0010] Preferably, a sticky inner layer is bonded to the inner wall of the dust collecting groove, and the surface of the sticky inner layer is a sticky surface. The setting of the sticky inner layer facilitates the gathering of dust. The dust sticks to the sticky inner layer, which can prevent the dust from spreading further to a certain extent.
[0011] Preferably, a hand piece is fixedly connected to the sticky inner layer, and the provision of the hand piece facilitates the cleaning and replacement of the sticky inner layer. When the dust collecting tank needs to be cleaned, the sticky inner layer can be torn off by the hand piece, and the dust inside can be poured out at the same time, which is easy to operate.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] (1) A protective shell is provided, a switch door is provided on the front side of the protective shell, a photovoltaic inverter is installed in the protective shell, the switch door is closed under normal conditions, ventilation holes are evenly provided on the symmetrical side walls of the protective shell, a dust shield box is fixedly connected to the symmetrical inner side wall of the protective shell and at a position opposite to the ventilation holes, a docking hole and a first ventilation hole are provided on the symmetrical side walls of the dust shield box, the docking hole and the first ventilation hole are staggered, the docking hole is connected to the ventilation hole, and the docking hole is connected to the ventilation hole, so that the dust shield box is connected to the ventilation hole as a whole, the two structures cooperate to make the protective shell ventilated while blocking most dust from entering, and effectively protecting the inverter inside;
[0014] (2) A dust shield is fixedly connected to the inner side of the dust shield box, and second ventilation holes are evenly arranged on the dust shield. When dust enters the inner side of the dust shield box through the ventilation holes, most of the dust is blocked by the dust shield. The second ventilation holes allow air to pass through the dust shield box and a small amount of dust. The protective device as a whole can be ventilated while blocking most of the dust from entering. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0016] Figure 2 This is a top sectional view of the dust shield box of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the dust collecting tank of the utility model;
[0018] Figure 4 This is a schematic diagram of the interior of the dust collecting tank of the utility model;
[0019] Figure 5 It is a partial schematic diagram of the dust shield box of the utility model.
[0020] In the figure: 1-protective shell, 2-switch door, 3-ventilation hole, 4-dust shield box, 5-docking hole, 6-first ventilation hole, 7-dust shield plate, 8-second ventilation hole, 9-dust collecting groove, 10-handle, 11-slide bar, 12-slide groove, 13-adhesive inner layer, 14-hand piece. DETAILED DESCRIPTION
[0021] 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.
[0022] Example:
[0023] See also Figure 1-5The utility model provides the following technical solutions: a photovoltaic inverter protection device, comprising a protective shell 1, a switch door 2 is arranged on the front side of the protective shell 1, a photovoltaic inverter is installed in the protective shell 1, the switch door 2 is closed under normal conditions, ventilation holes 3 are evenly opened on the symmetrical side walls of the protective shell 1, a dust shield box 4 is fixedly connected to the symmetrical inner side walls of the protective shell 1 and at a position opposite to the ventilation holes 3, a docking hole 5 and a first ventilation hole 6 are respectively opened on the symmetrical side walls of the dust shield box 4, the docking hole 5 and the first ventilation hole 6 are staggered, the docking hole 5 and the ventilation hole 3 are arranged in a staggered manner, and the docking hole 5 is arranged in a staggered manner. The dust shield box 4 is connected to the ventilation hole 3 through the docking hole 5, so that the dust shield box 4 is connected to the ventilation hole 3 as a whole. The two structures cooperate to make the protective shell 1 ventilated while blocking most of the dust from entering, so as to effectively protect the inverter inside. A dust shield plate 7 is fixedly connected to the inner side of the dust shield box 4, and second air holes 8 are evenly arranged on the dust shield plate 7. When dust enters the inner side of the dust shield box 4 from the ventilation hole 3, most of the dust is blocked by the dust shield plate 7, and the setting of the second air holes 8 makes the dust shield box 4 ventilated and allows a small amount of dust to pass through. The protective device can be ventilated as a whole while blocking most of the dust from entering.
[0024] Specifically, the dust shield plate 7 is tilted in the dust shield box 4, and the two ends of the dust shield plate 7 are respectively fixedly connected to the symmetrical inner walls of the dust shield box 4. The dust shield plate 7 is tilted, the dust shielding area is larger, and a certain dust collecting space is provided between the dust shield plate 7 and the side wall of the dust shield box 4 to allow dust to fall.
[0025] Specifically, the second air hole 8 vertically penetrates the dust shield 7, and the second air hole 8 is inclined relative to the air inlet docking hole 5 or the first air hole 6, so dust is not easy to enter, and the dust shielding effect is good.
[0026] Specifically, a dust collecting groove 9 is provided at the bottom of the dust shield box 4. The dust collecting groove 9 is a strip-shaped groove structure. The dust collecting groove 9 is slidably connected to the dust shield box 4. The dust blocked by the dust shield plate 7 falls into the dust collecting groove 9 and is collected uniformly, which is convenient for unified cleaning.
[0027] Specifically, a handle 10 is fixedly connected to the outer wall of the dust collecting trough 9 , and the arrangement of the handle 10 facilitates the pulling in and out of the dust collecting trough 9 .
[0028] Specifically, a slide bar 11 is fixedly connected to the outer wall of the dust collecting trough 9, and a slide groove 12 adapted to the slide bar 11 is opened on the inner wall of the dust shield box 4. The slide bar 11 is slidably connected in the slide groove 12. The setting of the slide bar 11 and the slide groove 12 makes the dust collecting trough 9 smoother to be pulled in and out.
[0029] Specifically, a sticky inner layer 13 is bonded to the inner wall of the dust collecting groove 9. The surface of the sticky inner layer 13 is a sticky surface. The setting of the sticky inner layer 13 facilitates the accumulation of dust. The dust sticks to the sticky inner layer 13, which can prevent the dust from spreading further to a certain extent.
[0030] Specifically, a hand piece 14 is fixedly connected to the sticky inner layer 13. The provision of the hand piece 14 facilitates the cleaning and replacement of the sticky inner layer 13. When the dust collecting tank 9 needs to be cleaned, the sticky inner layer 13 can be torn off by the hand piece 14, and the dust inside can be poured out at the same time, which is easy to operate.
[0031] Working principle: a protective shell 1 is provided, a switch door 2 is provided on the front side of the protective shell 1, a photovoltaic inverter is installed in the protective shell 1, the switch door 2 is closed under normal conditions, ventilation holes 3 are evenly provided on the symmetrical side walls of the protective shell 1, a dust shield box 4 is fixedly connected to the symmetrical inner side walls of the protective shell 1 and at a position opposite to the ventilation holes 3, a docking hole 5 and a first ventilation hole 6 are provided on the symmetrical side walls of the dust shield box 4, the docking hole 5 and the first ventilation hole 6 are staggered, the docking hole 5 is connected to the ventilation hole 3, and the docking hole 5 is connected to the ventilation hole 3 through the docking hole 5. The dust shield box 4 is connected so that the dust shield box 4 is connected with the ventilation hole 3 as a whole. The two structures cooperate to make the protective shell 1 ventilated while blocking most of the dust from entering, thereby effectively protecting the inverter inside. A dust shield plate 7 is fixedly connected to the inner side of the dust shield box 4, and second ventilation holes 8 are evenly arranged on the dust shield plate 7. When dust enters the inner side of the dust shield box 4 from the ventilation hole 3, most of the dust is blocked by the dust shield plate 7, and the setting of the second ventilation holes 8 makes the dust shield box 4 ventilated and a small amount of dust can be transported. The protective device can be ventilated as a whole while blocking most of the dust from entering.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A photovoltaic inverter protection device, comprising a protective housing (1), characterized in that: A switch door (2) is provided on the front side of the protective shell (1); ventilation holes (3) are evenly arranged on the symmetrical side walls of the protective shell (1); a dust shield box (4) is fixedly connected on the symmetrical inner wall of the protective shell (1) and at a position opposite to the ventilation holes (3); docking holes (5) and first ventilation holes (6) are respectively provided on the symmetrical side walls of the dust shield box (4); the docking holes (5) and the first ventilation holes (6) are arranged alternately; the docking holes (5) are connected to the ventilation holes (3); a dust shield plate (7) is fixedly connected to the inner side of the dust shield box (4); and second ventilation holes (8) are evenly arranged on the dust shield plate (7).
2. A photovoltaic inverter protection device according to claim 1, characterized in that: The dust shield plate (7) is arranged in an inclined manner in the dust shield box (4), and the two ends of the dust shield plate (7) are respectively fixedly connected to the symmetrical inner side walls of the dust shield box (4).
3. A photovoltaic inverter protection device according to claim 2, characterized in that: The second ventilation hole (8) vertically penetrates the dust shield (7).
4. A photovoltaic inverter protection device according to any one of claims 1 to 3, characterized in that: The inner bottom of the dust shield box (4) is provided with a dust collecting groove (9), the dust collecting groove (9) is a strip-shaped groove structure, and the dust collecting groove (9) is slidably connected to the dust shield box (4).
5. A photovoltaic inverter protection device according to claim 4, characterized in that: A handle (10) is fixedly connected to the outer side wall of the dust collecting trough (9).
6. A photovoltaic inverter protection device according to claim 4, characterized in that: A slide bar (11) is fixedly connected to the outer wall of the dust collecting groove (9), and a slide groove (12) adapted to the slide bar (11) is provided on the inner wall of the dust shield box (4), and the slide bar (11) is slidably connected in the slide groove (12).
7. A photovoltaic inverter protection device according to claim 4, characterized in that: An adhesive inner layer (13) is bonded to the inner side wall of the dust collecting groove (9), and the surface of the adhesive inner layer (13) is a sticky surface.
8. A photovoltaic inverter protection device according to claim 7, characterized in that: A hand piece (14) is fixedly connected to the adhesive inner layer (13).