Fixed mounting device for photovoltaic inverter

Abstract

The invention discloses a fixing and mounting device for a photovoltaic inverter, which solves the problems that the inverter is easy to steal and bolts are easy to erode and rust by rainwater due to the fact that fixing bolts are directly exposed in the prior art, and comprises a bracket for mounting inverter equipment, and the bracket comprises at least two cross rods; according to the invention, rapid mounting pre-positioning of equipment is realized through the L-shaped hook, and after final fastening with the bracket is completed through the bolt, the inverter main body can be rotated and closed, so that the bolt is completely hidden at the inner side and cannot be directly contacted and detached from the outside, and the anti-theft performance of the equipment is remarkably improved; the mounting groove is formed in the front face of the back plate, the bolt is contained in the mounting groove, the sealing gasket is arranged in the groove opening, and the back face of the closed inverter body is used for pressing the sealing gasket to form a sealing structure, so that the problem that the bolt is prone to being rusted and blocked by wind and sand when exposed in the outdoor severe environment for a long time is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic inverter installation, in particular to a fixed installation device for photovoltaic inverter, and especially to a fixed installation device for photovoltaic inverter with anti-theft, anti-corrosion and convenient maintenance. BACKGROUND

[0002] The photovoltaic inverter is an electronic device that converts direct current generated by solar cells into alternating current. It is usually installed in an outdoor environment, such as the support of a photovoltaic array or a separate installation base. At present, the photovoltaic inverter is mainly fixed by bolts in a wall-mounted manner. This installation method has at least the following defects:

[0003] 1. The exposed bolt connection makes the inverter extremely easy to be disassembled by general tools, and the anti-theft ability is weak, so the risk of theft is high in unattended outdoor power stations.

[0004] 2. The exposed bolt is easily eroded by rainwater or clogged by sand in a long-term exposure to rain, snow, wind and sand in harsh outdoor environments, which leads to thread rusting and fastening failure, not only causing difficulties in later maintenance and disassembly, but also possibly causing the risk of equipment falling due to decreased connection strength.

[0005] 3. The inverter is fixed by bolts in a wall-mounted manner, and when cleaning the filter screen at the back in the later period, the inverter usually needs to be disassembled, which is relatively troublesome to operate. SUMMARY

[0006] The present application aims to solve the problems of easy theft of equipment, bolt erosion by rainwater and inconvenient maintenance of existing photovoltaic inverters due to direct exposure of fixing bolts.

[0007] To solve the above problems, the present application provides a fixed installation device for photovoltaic inverter, which comprises an installation structure for installing the inverter body on a support, the support comprising at least two horizontal rods, and the installation structure comprising a bolt. Wherein, the installation structure further comprises a back plate, the back surface of the back plate is fixed with an L-shaped hook for hanging the back plate on the horizontal rod, and the bolt is threadedly connected with the horizontal rod after penetrating through the back plate. One side of the inverter body is rotationally connected with the back plate through a rotating assembly, and the other side of the inverter body is fixed with the back plate through a lock, and the bolt is hidden between the inverter body and the back plate and cannot be touched from the outside.

[0008] Preferably, the back surface of the inverter body is fixed with a heat dissipation fin, a fan is fixedly installed on the heat dissipation fin, a ventilation opening is provided through the back plate, and a filter screen is installed in the ventilation opening.

[0009] Preferably, a cleaning mechanism for cleaning dust on the surface of the filter screen is arranged in the air vent, the cleaning mechanism comprises a push plate slidingly connected in the air vent, and a return spring is connected between the push plate and the inner wall of the air vent. A through hole corresponding to the air inlet of the fan is formed in the push plate, and a sealing assembly is arranged at the through hole.

[0010] Preferably, the sealing assembly comprises two vertical guide rails fixed on both sides of the through hole, and two baffles arranged in an up-down manner are arranged between the two vertical guide rails, and the two ends of each baffle are slidingly connected with the corresponding vertical guide rail.

[0011] Preferably, a mounting groove is embedded in the front surface of the back plate, and the bolt is arranged in the mounting groove. A sealing gasket is fixed at the mouth of the mounting groove, and when the inverter main body is mounted on the back plate, the back surface of the inverter main body covers the mouth of the mounting groove and is pressed against the sealing gasket, forming a sealed structure.

[0012] Preferably, the heat dissipation fin is fixed with a heat conduction plate for covering the mouth of the mounting groove.

[0013] Preferably, a guide rod is fixed in the air vent, and the push plate is slidingly connected with the guide rod.

[0014] Compared with the prior art, the present application has the following advantages: 1、The L-shaped hook is used for quickly mounting and positioning the equipment, and after the final fastening with the support is completed through the bolt, the inverter main body can be rotated and closed, so that the bolt is completely hidden inside and cannot be directly contacted and disassembled from the outside, thereby significantly improving the anti-theft performance of the equipment.

[0015] 2、The mounting groove is arranged on the front surface of the back plate, the bolt is accommodated in the mounting groove, the sealing gasket is arranged at the groove mouth, and the sealing structure is formed by pressing the sealing gasket with the back surface of the closed inverter main body, thereby solving the problems that the bolt is easily rusted and blocked by sand in the outdoor harsh environment.

[0016] 3、The heat dissipation fin on the back surface of the inverter is combined with the heat conduction plate covering the mounting groove mouth, so that the heat generated during the operation of the equipment can be guided to the inside of the mounting groove, the moisture invading the mounting groove is dried, and the problem of rusting of the bolt is avoided.

[0017] 4、The whole structure of the rotation opening and closing and side locking is adopted, the problem of inconvenient cleaning of the filter screen of the traditional fixed installation of the inverter is solved, when cleaning and maintenance are needed, the filter screen is vibrated by pushing the push plate, and dust is discharged by using airflow, dust flying is avoided to influence the maintenance personnel, and the cleaning process of the filter screen is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the structure installation of the application after completion.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the structure installation process of the application.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the rear view of the application after installation.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the inverter device of the application.

[0022] Figure 5 It is a schematic diagram of the front structure of the back plate in embodiment 3 of the application.

[0023] Figure 6 It is a schematic diagram of the back structure of the back plate in embodiment 3 of the application.

[0024] In the figure: 1, cross rod; 2, inverter main body; 3, installation structure; 31, back plate; 32, L-shaped hook; 33, bolt; 34, rotation assembly; 35, lock; 4, installation groove; 5, ventilation opening; 6, heat conduction plate; 7, fan; 8, filter screen; 9, cleaning mechanism; 91, push plate; 92, through hole; 93, vertical guide rail; 94, baffle; 95, guide rod; 96, reset spring; 97, L-shaped plate; 98, vibration plate; 99, connecting plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0026] Please refer to Figures 1-6 .

[0027] Embodiment 1 The main innovation of the embodiment of the present application is that the bolt 33 for fixing the inverter device is completely hidden, compared with the prior art, the bolt 33 does not have to be exposed outside, thereby preventing the inverter device from being stolen by disassembling the bolt 33 by illegal persons, and by hiding the bolt 33 in the mounting groove 4, after the device is installed, the bolt 33 can be effectively prevented from being eroded by rain.

[0028] The embodiment of the present application will be described in detail as follows: A fixing and mounting device for a photovoltaic inverter, comprising a mounting structure 3 for mounting an inverter body 2 to a support 1, the support comprising at least two cross bars 1, the mounting structure 3 comprising a back plate 31, an L-shaped hook 32, a bolt 33, a rotating assembly 34 and a lock 35, wherein: The L-shaped hook 32 is fixed to the back of the back plate 31 for hanging the back plate 31 on the cross bar 1, and the bolt 33 is used for being inserted from the front of the back plate 31 and being screwed with the cross bar 1, by the arrangement of the L-shaped hook 32, when the inverter body 2 is installed, the inverter body 2 can be quickly hung on the cross bar 1 through the L-shaped hook 32, thereby achieving quick positioning of the inverter body 2, compared with the prior art which needs to lift the inverter body 2 and align the mounting hole, it is more labor-saving, and a threaded hole (not shown in the figure) is reserved on the cross bar 1, after the inverter body 2 is hung, the position is adjusted, and then the bolt 33 is inserted into the back plate 31 and screwed with the cross bar 1, thereby quickly achieving fixing of the inverter body 2.

[0029] One side of the inverter body 2 is rotationally connected to the back plate 31 through the rotating assembly 34, and the other side of the inverter body 2 is detachably fixed to the back plate 31 through the lock 35. In the embodiment, the rotating assembly 34 can be a common rotating shaft structure or a hinge structure, after the bolt 33 is installed, the bolt 33 can be hidden between the inverter body 2 and the back plate 31 by rotating the inverter body 2 close to the back plate 31, compared with the mounting mode of the prior art in which the bolt 33 is exposed, the anti-theft capability of the inverter device is greatly improved. In addition, in the embodiment, the lock 35 can be a key lock or a password lock, wherein the key lock can be opened by a key, and the password lock can be opened by rotating a digital button, which will not be described here

[0030] In use, the inverter body 2 can expose the bolt 33 when it is opened by rotating through the rotating assembly 34, and the inverter body 2 can hide the bolt 33 when it is fixed through the lock 35, so that the bolt 33 cannot be touched from the outside. In this way, after the inverter device is installed, the bolt 33 can be completely hidden between the surface of the back plate 31 and the back of the inverter body 2, thereby preventing the bolt 33 from being eroded by rain, and the complete hiding of the bolt 33 makes it impossible to find a disassembly place for the inverter device, compared with the prior art in which the bolt 33 is fixed outside, the inverter device has a good anti-theft effect.

[0031] Embodiment 2 Embodiment 2 is a further improvement on Embodiment 1, on the basis of Embodiment 1, as shown in Figure 2 、 Figure 3 and Figure 4 .

[0032] The back of the inverter body 2 is fixed with a heat dissipation fin, and a fan 7 is fixedly installed on the heat dissipation fin. It can be understood that installing a fan 7 on the heat dissipation fin is a conventional technical means, and its circuit connection and control mode belong to the prior art, which will not be repeated here. The back plate 31 is provided with a ventilation opening 5, and a filter screen 8 is installed in the ventilation opening 5. Through the setting of the heat dissipation fin and the fan 7, the heat dissipation effect of the inverter body 2 is guaranteed, through the setting of the ventilation opening 5, the normal ventilation of the heat dissipation fin is guaranteed, and through the setting of the filter screen 8, dust is prevented from entering the fan 7. It is worth mentioning that because the inverter body 2 of the present application can be turned open through the rotating assembly 34, so as to conveniently expose the inner surface of the filter screen 8, compared with the traditional way of being directly fixed and installed by bolts 33, it is more convenient to clean the filter screen 8.

[0033] Embodiment 3 Embodiment 3 is a further improvement on Embodiment 2. It can be understood that when a brush or other tool is used to clean the filter screen 8, the dust on the surface of the filter screen 8 is easy to come to the face, so that the maintenance personnel is easy to inhale a large amount of dust. Therefore, Embodiment 3 sets a cleaning mechanism 9 which can prevent the maintenance personnel from inhaling dust on the basis of Embodiment 2.

[0034] Specifically, as shown in Figure 5 、 Figure 6As shown (the inverter main body 2 is not shown), the cleaning mechanism 9 is arranged in the air vent 5, and the cleaning mechanism 9 comprises a push plate 91 which is slidingly connected in the air vent 5, the push plate 91 is in a rectangular structure which is consistent with the shape of the air vent 5, and the push plate 91 is connected with the inner wall of the air vent 5 through a reset spring 96. A through hole 92 corresponding to the air inlet of the fan 7 is formed in the push plate 91, and a sealing assembly is arranged at the through hole 92. It can be understood that the fan 7 is installed on the back of the inverter main body 2, and when working normally, the air inlet of the fan 7 coincides with the through hole 92, that is, when the fan 7 works, the air outside will enter the inside of the air vent 5 through the filter screen 8, and then enter the air inlet of the fan 7 through the through hole 92. When it is necessary to clean the filter screen 8, the lock 35 can be opened first, and then the inverter main body 2 is rotated to expose the push plate 91 on the surface of the back plate 31. At this time, the through hole 92 is open, and the through hole 92 can be closed through the sealing assembly to prevent dust from coming from the front when cleaning. Further, the filter screen 8 is fixed with a connecting plate 99, the connecting plate 99 is fixed with a vibrating plate 98 at both ends of the surface, the vibrating plate 98 is embedded with a wave-shaped groove on the surface, and the push plate 91 is fixed with an L-shaped plate 97. When the L-shaped plate 97 moves on the surface of the vibrating plate 98, the filter screen 8 is driven to vibrate through cooperation with the wave-shaped groove.

[0035] In use, the maintenance personnel can quickly rotate and open the inverter main body 2 by opening the lock 35, so as to expose the back plate 31 and the cleaning mechanism 9, and then close the through hole 92 through the sealing assembly. Then the push plate 91 is manually pushed to move the push plate 91 to the direction of the filter screen 8. When the push plate 91 moves, the reset spring 96 is compressed, and the L-shaped plate 97 moves on the surface of the vibrating plate 98 to drive the filter screen 8 to vibrate, so that the dust on the surface of the filter screen 8 is vibrated down. It is worth mentioning that when the push plate 91 moves to the direction of the filter screen 8, the air in the air vent 5 can be squeezed outwards, so that the dust falling on the inner surface of the filter screen 8 is squeezed out to the outside of the air vent 5. When the push plate 91 is released, the push plate 91 can be automatically reset under the elastic force of the reset spring 96. Through such repeated pushing and releasing, the filter screen 8 is continuously vibrated, and the dust in the air vent 5 is automatically discharged.

[0036] In some specific embodiments of the present embodiment, a guide rod 95 is fixed in the air vent 5, and the push plate 91 is slidingly connected with the guide rod 95. Through the arrangement of the guide rod 95, the sliding of the push plate 91 is guided, so that the sliding of the push plate 91 in the air vent 5 is more smooth.

[0037] In some specific embodiments of the present embodiment, the sealing assembly comprises two vertical guide rails 93 fixed on both sides of the through hole 92, and two baffles 94 arranged in an up-down manner are arranged between the two vertical guide rails 93, and the two ends of each baffle 94 are respectively connected with the corresponding vertical guide rail 93 in a sliding manner. The baffles 94 and the vertical guide rails 93 can be limited in a damping manner or in a bolted manner, which is not specifically limited here. In use, the baffles 94 are manually pushed to slide to realize the opening and closing of the through hole 92.

[0038] Embodiment 4 Embodiment 4 is a further improvement of embodiment 1. On the basis of embodiment 1, the front surface of the back plate 31 is embedded with a mounting groove 4, the bolt 33 is arranged in the mounting groove 4, and the mouth of the mounting groove 4 is fixed with a sealing gasket. When the inverter body 2 is installed on the surface of the back plate 31, the back surface of the inverter body 2 covers the mouth of the mounting groove 4 and is pressed with the sealing gasket, forming a sealing structure for accommodating the bolt 33, thereby achieving good rainproof effect for the bolt 33 and avoiding rust of the bolt 33.

[0039] Further, the heat dissipation fins are fixed with a heat conduction plate 6 for covering the mouth of the mounting groove 4. The heat conduction plate 6 and the heat dissipation fins can be integrally formed. When the inverter body 2 works, the heat generated by the inverter body 2 is transferred to the heat dissipation fins, then to the heat conduction plate 6 through the heat dissipation fins, and finally to the inside of the mounting groove 4 through the heat conduction plate 6, thereby drying the moisture that may enter the mounting groove 4 and enhancing the moisture-proof protection capability of the area.

[0040] Working principle of the present application: During installation, first, the L-shaped hook 32 on the back surface of the back plate 31 is used to suspend the entire device on the support crossbar 1 for pre-positioning, and then the bolt 33 is screwed into the crossbar 1 from the front surface of the back plate 31 to complete the final fastening. Then, the inverter body 2 is rotated around the rotating assembly 34 until its back surface is attached to the back plate 31, and the side edge lock 35 is used to fix it. In this closed state, the bolt 33 is completely hidden and sealed in the cavity formed by the inverter body 2 and the back plate 31, and the sealing gasket at the mouth of the mounting groove 4 is pressed tightly, effectively preventing external foreign matter from contacting and rainwater from eroding, thereby achieving the dual purposes of theft prevention and corrosion prevention. When it is necessary to maintain the internal fan 7 or the filter screen 8, only the lock is opened and the inverter body 2 is rotated to completely expose the inner and outer sides of the filter screen 8; by pushing the push plate 91 in the air vent 5, the L-shaped plate 97 on it can move along the wave-shaped groove of the vibration plate 98, thereby exciting the filter screen 8 to make the dust on its surface fall off, and the dust is discharged under the action of the airflow generated by the reciprocating movement of the push plate 91, realizing convenient and efficient cleaning. The entire process does not need to touch the bolt 33 and avoids the dust directly attacking the maintenance personnel.

[0041] The above-mentioned are only embodiments of the present application, and the common knowledge of the specific structure and characteristics in the scheme is not described too much herein. The ordinary skilled person in the art knows all the ordinary technical knowledge in the field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date. The ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, combined with their own ability. Some typical known structures or known methods should not be an obstacle for the ordinary skilled person in the art to implement the present application.

[0042] It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can also be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A fixed installation device for a photovoltaic inverter, comprising a bracket for mounting the inverter equipment, characterized in that, The bracket includes at least two crossbars (1), and the inverter device includes a mounting structure (3) for mounting the inverter body (2) onto the crossbars (1); the mounting structure (3) includes a back plate (31), an L-shaped hook (32), a bolt (33), a rotating assembly (34), and a lock (35), wherein: the L-shaped hook (32) is fixed to the back of the back plate (31) for hooking the back plate (31) onto the crossbars (1); the bolt (33) is inserted from the front of the back plate (31) and threadedly connected to the crossbars (1); one side of the inverter body (2) is rotatably connected to the back plate (31) via the rotating assembly (34), and the other side is detachably fixed to the back plate (31) via the lock (35); The inverter body (2) can be opened by rotating the rotating assembly (34) to expose the bolt (33), and can be locked closed by the lock (35) to hide the bolt (33) between the inverter body (2) and the back plate (31).

2. The fixed installation device for a photovoltaic inverter according to claim 1, characterized in that, The inverter body (2) has heat dissipation fins fixed on its back side, and a fan (7) is installed on the heat dissipation fins. The back panel (31) has a through-hole (5), and a filter screen (8) is installed inside the through-hole (5).

3. A fixed installation device for a photovoltaic inverter according to claim 2, characterized in that, The vent (5) is provided with a cleaning mechanism (9) for cleaning the filter screen (8); the cleaning mechanism (9) includes a push plate (91) slidably connected to the vent (5), and a return spring (96) is connected between the push plate (91) and the inner wall of the vent (5); the push plate (91) is provided with a through hole (92) corresponding to the air inlet of the fan (7), and a sealing component for opening and closing the through hole (92) is provided at the through hole (92); a vibrating plate (98) is fixed on the surface of the filter screen (8), the surface of the vibrating plate (98) is provided with a wave-shaped channel, and an L-shaped plate (97) is fixed on the push plate (91), the free end of the L-shaped plate (97) slidingly engaging with the wave-shaped channel on the surface of the vibrating plate (98).

4. A fixed installation device for a photovoltaic inverter according to claim 3, characterized in that, The sealing assembly includes two vertical guide rails (93) fixed on both sides of the through hole (92), and two baffles (94) arranged vertically between the two vertical guide rails (93). The two ends of each baffle (94) are slidably connected to the corresponding vertical guide rail (93).

5. A fixed installation device for a photovoltaic inverter according to claim 1, characterized in that, The front of the back plate (31) is provided with a mounting groove (4), and the bolt (33) is housed in the mounting groove (4). A sealing gasket is fixed at the opening of the mounting groove (4). When the inverter body (2) is installed on the back plate (31), the back of the inverter body (2) is sealed to the opening of the mounting groove (4) and pressed against the sealing gasket to form a sealing structure.

6. A fixed installation device for a photovoltaic inverter according to claim 5, characterized in that, The heat dissipation fins are fixed with a heat-conducting plate (6) for covering the opening of the mounting groove (4).

7. A fixed installation device for a photovoltaic inverter according to claim 3, characterized in that, A guide rod (95) is fixed inside the vent (5), and the push plate (91) is slidably connected to the guide rod (95).

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