A backflushing gas cleaning type outdoor photovoltaic grid-connected inverter

Abstract

This invention belongs to the field of inverter technology and discloses a reverse-flow air-clean outdoor photovoltaic grid-connected inverter, including an inverter body with an axial flow cooling fan inside. Air inlets and outlets are respectively located on both sides of the inverter body. It also includes an air-cleaning component located on the top of the inverter body. This invention uses a snow-collecting strip to collect snow, with a gap between the strip and the inverter body to prevent direct contact between the snow and the top of the inverter body. This gap also improves the heat dissipation of the inverter body, reducing the aging rate of the equipment components. The axial flow cooling fan inside the inverter body blows hot air through the snow on the top of the strip, melting it and discharging it as liquid along the strip. This avoids repeated freeze-thaw cycles that could damage the equipment's sealing performance, thus reducing snow accumulation on the top of the strip. No manual intervention is required during this process.

Description

Technical Field

[0001] This invention belongs to the field of inverter technology, specifically a reverse-air clean outdoor photovoltaic grid-connected inverter. Background Technology

[0002] Outdoor photovoltaic grid-connected inverters are power conversion devices specifically designed for outdoor environments. Their core function is to convert the direct current (DC) generated by solar panels into alternating current (AC) that is in phase and frequency with the public power grid, enabling grid-connected power supply. They feature high protection ratings (e.g., IP65), strong weather resistance, and support for MPPT (Multi-Level Testing) to optimize power generation efficiency. Suitable for distributed photovoltaic power stations, commercial and industrial rooftops, and other applications, they also have remote monitoring capabilities to ensure stable system operation.

[0003] Currently, snow accumulation on the top of outdoor photovoltaic grid-connected inverters is a prominent issue. Thick snow can severely hinder normal heat dissipation, causing internal components to age faster due to excessive temperature, directly affecting operational stability. Furthermore, the weight of accumulated wet snow may exceed the casing's design load, leading to structural problems such as casing deformation and loosening of supports. If drainage is poor after snow melts, moisture may seep into wiring ports or heat dissipation holes, posing a short-circuit risk. Repeated freeze-thaw cycles can also damage the equipment's sealing performance. Existing methods, primarily relying on manual snow removal, are insufficient to address the problem effectively and promptly, further exacerbating inverter performance degradation and shortening its lifespan. Therefore, a reverse-jet air-clean outdoor photovoltaic grid-connected inverter is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a reverse-air clean outdoor photovoltaic grid-connected inverter, which solves the problem that the existing method of relying mainly on manual snow removal for inverters is difficult to solve in a timely and effective manner, thus aggravating the performance degradation and shortening the service life of the inverter.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reverse-jet clean outdoor photovoltaic grid-connected inverter, comprising an inverter body, wherein an axial flow cooling fan is disposed inside the inverter body, and an air inlet and an air outlet are respectively disposed on both sides of the inverter body, and further comprising:

[0006] An air-cleaning assembly is disposed on the top of the inverter body;

[0007] The air purification component includes a shunt pipe connected to the exhaust port, a support frame is fixedly mounted on the top of the inverter body, a connecting conduit is fixedly mounted on the side of the support frame, and the connecting conduit is connected to the shunt pipe through a connecting hose.

[0008] The receiving frame is provided with cleaning rollers at equal intervals, and exhaust pipes are fixedly installed on the cleaning rollers;

[0009] The cleaning roller is movably connected to the connecting conduit, and the exhaust pipe is connected to the inside of the cleaning roller;

[0010] The receiving frame is provided with a receiving belt, and the cleaning roller is located on the receiving belt.

[0011] Preferably, a support guide frame is fixedly mounted on the receiving frame, the height of the cleaning roller gradually decreases from the end near the diverter, and the receiving belt passes through the support guide frame and the cleaning roller, with its height gradually decreasing.

[0012] Preferably, the air cleaning assembly further includes a support roller, a first transmission roller, and a second transmission roller disposed on the receiving frame;

[0013] Initially, one end of the receiving belt is wound around the second drive roller, and the other end is fixedly connected to the first drive roller.

[0014] Preferably, a drive motor is fixedly mounted at one end of the first transmission roller, and reset coil springs are provided at both ends of the second transmission roller;

[0015] The drive motor drives the first transmission roller to rotate and wind up the receiving belt, causing the receiving belt to gradually disengage from the second transmission roller and stretching the return spring.

[0016] Preferably, the cleaning roller has two cavities connected by a second connecting hole, the upper cavity is connected to the exhaust pipe through a first connecting hole, and the lower cavity is connected to the connecting conduit.

[0017] Preferably, pressure strips are fixedly mounted at equal intervals on the outside of the cleaning roller, and the outside of the pressure strips contacts the top of the receiving belt;

[0018] The cleaning roller is cam-shaped.

[0019] Preferably, both ends of the cleaning roller are fixedly equipped with drive wheels, and a drive belt is sleeved on the outside of the drive wheels.

[0020] Preferably, the pushing component includes a spring sheet fixedly mounted on the transmission belt, a first fixing frame is fixedly mounted on the side of the receiving frame, a first guide rod is fixedly mounted on the first fixing frame, a first receiving frame is slidably arranged on the outside of the first guide rod through a first connector, toothed blocks are fixedly mounted at equal intervals on the top of the first receiving frame, and a first reset elastic member supporting the first connector is arranged on the outside of the first guide rod.

[0021] One end of the first receiving frame is connected to the first transmission roller via a connecting rope;

[0022] The transmission belt is inclined, the toothed block pushes the spring piece to move with the transmission belt, and the height of the connecting rope gradually increases with the transmission belt, so that the toothed block disengages from contact with the spring piece.

[0023] Preferably, the reset assembly includes a second fixed frame fixed to the side of the receiving frame, a second guide rod fixedly mounted on the second fixed frame, the upper end of the transmission belt sliding on the second guide rod through a second connector, and a second reset elastic element supporting the second connector being provided on the outside of the second guide rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention uses a receiving belt to collect snow, with a gap between the receiving belt and the inverter body to prevent snow from directly contacting the top of the inverter body. Simultaneously, the gap improves the heat dissipation of the inverter body, reducing the aging rate of equipment components. An external fan enters the inverter body through an axial flow cooling fan inside the inverter body, carrying heat through the inlet and exiting through the outlet into a distribution pipe. The heat then flows through connecting hoses into a connecting conduit and a cleaning roller. Since the exhaust pipe is connected to the cleaning roller, the heated gas is ejected through the exhaust pipe, blowing away the snow on the top of the receiving belt, causing it to melt and drain as liquid. This liquid then flows out along the receiving belt, preventing repeated freeze-thaw cycles from damaging the equipment's sealing performance and reducing snow accumulation on the top of the receiving belt. No manual intervention is required during this process.

[0026] This invention cleans the snow on top of the receiving belt by expelling the hot airflow from the inverter body through the exhaust pipe. During the cleaning process, the first transmission roller is driven by the drive motor to rotate and wind up the receiving belt. During the winding process, the receiving belt gradually separates from the second transmission roller and stretches the return spring. As the receiving belt moves, the snow on top gradually approaches the air outlet of the exhaust pipe, thereby achieving the purpose of quickly cleaning up the snow.

[0027] This invention involves gas entering the lower cavity of the cleaning roller. The heat carried by the gas is absorbed by the lower cavity of the cleaning roller and the pressure bar. As the receiving belt is wound up, the snow on the top gradually comes into contact with the outside of the cleaning roller. The pressure bar and the lower end of the cleaning roller absorb heat, thereby melting the snow and improving the efficiency of snow removal. The melted liquid flows out along the receiving belt.

[0028] This invention uses a motor to drive the first transmission roller to rotate, simultaneously winding the connecting rope during the winding of the receiving belt. This pulls the first receiving frame, the first connecting piece, and the toothed block along the first guide rod towards the end of the first transmission roller, compressing the first reset elastic element. The movement of the toothed block contacts the spring plate, thereby driving the transmission belt and the three cleaning rollers to rotate. The rotation of the cleaning rollers and the pressure strip increases the contact area with the snow. At the same time, the rotation of the cleaning rollers and the pressure strip creates friction with the snow, which, combined with the heat on the surface of the cleaning rollers, improves the efficiency of snow removal. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the external structure of the air cleaning component of the present invention;

[0031] Figure 3 This is a schematic cross-sectional view of the air purification component of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0033] Figure 5 This is a schematic diagram of the disassembled structure of the cleaning roller and the connecting conduit of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the receiving belt and cleaning roller of the present invention;

[0035] Figure 7 This is a top view of the air purification component of the present invention;

[0036] Figure 8 This is a schematic diagram of the external structure of the push component and the reset component of the present invention.

[0037] In the diagram: 1. Inverter body; 2. Air inlet; 3. Air outlet; 4. Air cleaning component; 41. Diverter pipe; 42. Connecting hose; 43. Connecting conduit; 44. Receiving frame; 45. Cleaning roller; 46. Exhaust pipe; 47. First connecting hole; 48. Second connecting hole; 49. Pressure strip; 411. Drive wheel; 412. Receiving belt; 413. Drive belt; 414. Support guide frame; 415. First drive roller; 416. Support roller; 417. Second drive roller; 5. Pushing component; 51. Spring; 52. Connecting rope; 53. First receiving frame; 54. First fixing frame; 55. First guide rod; 56. First reset elastic element; 57. First connector; 58. Tooth block; 6. Reset component; 61. Second fixing frame; 62. Second guide rod; 63. Second reset elastic element; 64. Second connector. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figures 1 to 8As shown, this invention provides a reverse-air clean outdoor photovoltaic grid-connected inverter, including an inverter body 1, an axial flow cooling fan installed inside the inverter body 1, and air inlets 2 and exhaust outlets 3 respectively on both sides of the inverter body 1, and further including:

[0040] Air purification component 4 is located on top of inverter body 1;

[0041] The air purification component 4 includes a shunt pipe 41 connected to the exhaust port 3. A support frame 44 is fixedly installed on the top of the inverter body 1. A connecting conduit 43 is fixedly installed on the side of the support frame 44. The connecting conduit 43 is connected to the shunt pipe 41 through a connecting hose 42.

[0042] Cleaning rollers 45 are equidistantly arranged on the receiving frame 44, and exhaust pipes 46 are fixedly installed on the cleaning rollers 45.

[0043] The cleaning roller 45 is movably connected to the connecting conduit 43, and the exhaust pipe 46 is connected to the inside of the cleaning roller 45.

[0044] A receiving belt 412 is provided on the receiving frame 44, and a cleaning roller 45 is located on the receiving belt 412.

[0045] Snow is collected by the receiving belt 412, and there is a gap between the receiving belt 412 and the inverter body 1 to prevent the snow from directly contacting the top of the inverter body 1. At the same time, the gap improves the heat dissipation effect of the inverter body 1 and reduces the aging rate of the equipment components. The axial flow cooling fan inside the inverter body 1 carries heat into the inverter body 1 through the air inlet 2 and enters the distribution pipe 41 through the exhaust port 3. The heat is then introduced into the connecting conduit 43 and the cleaning roller 45 through the connecting hose 42. Since the exhaust pipe 46 is connected to the cleaning roller 45, the gas containing heat is ejected through the exhaust pipe 46. The ejected hot air blows the snow on the top of the receiving belt 412, causing it to melt and form liquid, which is then discharged along the receiving belt 412. This avoids repeated freezing and swelling effects that may damage the sealing performance of the equipment, thereby reducing the snow accumulation on the top of the receiving belt 412. Snow removal can be achieved without manual intervention during this process.

[0046] like Figure 2 and Figure 3 As shown, a support guide frame 414 is fixed on the receiving frame 44, the height of the cleaning roller 45 gradually decreases from the end near the diverter pipe 41, and the receiving belt 412 passes through the support guide frame 414 and the cleaning roller 45 with its height gradually decreasing.

[0047] Gas is drawn from the outside into the inverter body 1 by an axial cooling fan, and the gas carries heat into the cleaning roller 45 and is discharged through the first connecting hole 47. The snow on the top of the receiving belt 412 melts into liquid under the action of the hot air flow. As the height of the receiving belt 412 gradually decreases, the melted liquid flows along the receiving belt 412. The flow of liquid improves the efficiency of snow melting and the effect of snow removal.

[0048] like Figures 2-4 As shown, the air cleaning assembly 4 also includes a support roller 416, a first transmission roller 415 and a second transmission roller 417 disposed on the receiving frame 44;

[0049] One end of the initial receiving belt 412 is wrapped around the second transmission roller 417, and the other end is fixedly connected to the first transmission roller 415;

[0050] A drive motor is fixedly mounted at one end of the first transmission roller 415, and reset coil springs are provided at both ends of the second transmission roller 417.

[0051] The drive motor drives the first transmission roller 415 to rotate and wind up the receiving belt 412, so that the receiving belt 412 gradually gets out of the second transmission roller 417 and stretches and resets the roll.

[0052] The cleaning roller 45 has two cavities, which are connected by a second connecting hole 48. The upper cavity is connected to the exhaust pipe 46 through a first connecting hole 47, and the lower cavity is connected to the connecting conduit 43.

[0053] Pressure strips 49 are fixedly mounted at equal intervals on the outside of the cleaning roller 45, and the outside of the pressure strips 49 contacts the top of the receiving belt 412.

[0054] The cleaning roller 45 is cam-shaped.

[0055] The hot air discharged from the inverter body 1 is discharged through the exhaust pipe 46 to clear the snow on top of the receiving belt 412. During the clearing process, the first transmission roller 415 is driven by the drive motor to rotate and wind up the receiving belt 412. During the winding process, the receiving belt 412 gradually disengages from the second transmission roller 417 and stretches the return spring. As the receiving belt 412 moves, the snow on top gradually approaches the air outlet of the exhaust pipe 46, thereby achieving the purpose of quickly clearing the snow.

[0056] Since the connecting conduit 43 is connected to the lower cavity of the cleaning roller 45, gas enters the lower cavity of the cleaning roller 45. The heat carried by the gas is absorbed by the lower cavity of the cleaning roller 45 and the pressure bar 49. When the receiving belt 412 is wound up, the snow on the top gradually comes into contact with the outside of the cleaning roller 45. The pressure bar 49 and the lower end of the cleaning roller 45 absorb heat to achieve the purpose of melting the snow, thereby improving the purpose of snow removal. The melted liquid flows out along the receiving belt 412.

[0057] like Figure 7 and Figure 8 As shown, both ends of the cleaning roller 45 are fixedly equipped with drive wheels 411, and a drive belt 413 is sleeved on the outside of the drive wheels 411.

[0058] The pushing component 5 includes a spring piece 51 fixed on the transmission belt 413, a first fixing frame 54 fixed on the side of the receiving frame 44, a first guide rod 55 fixed on the first fixing frame 54, a first receiving frame 53 slidably arranged on the outside of the first guide rod 55 through the first connector 57, toothed blocks 58 fixed at equal intervals on the top of the first receiving frame 53, and a first reset elastic member 56 supporting the first connector 57 on the outside of the first guide rod 55.

[0059] One end of the first receiving frame 53 is connected to the first transmission roller 415 via a connecting rope 52;

[0060] The transmission belt 413 is inclined, and the toothed block 58 pushes the spring piece 51 to move with the transmission belt 413. The height of the connecting rope 52 gradually increases with the transmission belt 413, so that the toothed block 58 disengages from the spring piece 51.

[0061] The reset assembly 6 includes a second fixed frame 61 fixedly mounted on the side of the receiving frame 44. A second guide rod 62 is fixedly mounted on the second fixed frame 61. The upper end of the transmission belt 413 slides on the second guide rod 62 through the second connector 64. A second reset elastic member 63 is provided on the outside of the second guide rod 62 to support the second connector 64.

[0062] The motor drives the first transmission roller 415 to rotate, which in turn winds the receiving belt 412 and simultaneously winds the connecting rope 52. This pulls the first receiving frame 53, the first connecting piece 57, and the toothed block 58 along the first guide rod 55 toward the end of the first transmission roller 415, and compresses the first reset elastic member 56. The toothed block 58 moves and contacts the spring piece 51, thereby pushing the transmission belt 413 and the three cleaning rollers 45 to rotate. The rotation of the cleaning rollers 45 and the pressure strip 49 increases the contact area with the snow. At the same time, the rotation of the cleaning rollers 45 and the pressure strip 49 creates friction with the snow and combines with the heat on the surface of the cleaning rollers 45, thereby improving the efficiency of snow removal.

[0063] During the rotation of the transmission belt 413, the second connecting member 64 moves along the second guide rod 62 and squeezes the second reset elastic member 63. When a toothed block 58 disengages from contact with the spring piece 51, the cleaning roller 45 rotates in the opposite direction and resets under the action of the second reset elastic member 63, so that the next toothed block 58 contacts the spring piece 51. This reciprocating motion drives the cleaning roller 45 to rotate back and forth, improving the snow removal effect.

[0064] Working principle and usage process of this invention:

[0065] Snow is collected by the receiving belt 412, and there is a gap between the receiving belt 412 and the inverter body 1 to prevent the snow from directly contacting the top of the inverter body 1. At the same time, the gap improves the heat dissipation effect of the inverter body 1 and reduces the aging speed of the equipment components. The axial flow cooling fan inside the inverter body 1 carries heat into the inverter body 1 through the air inlet 2 and enters the distribution pipe 41 through the exhaust port 3. The heat is then introduced into the connecting pipe 43 and the cleaning roller 45 through the connecting hose 42. Since the exhaust pipe 46 is connected to the cleaning roller 45, the gas containing heat is ejected through the exhaust pipe 46. The ejected hot air blows the snow on the top of the receiving belt 412, causing it to melt and form liquid, which is then discharged along the receiving belt 412. The liquid flow improves the efficiency of snow melting and improves the snow removal effect.

[0066] The hot air discharged from the inverter body 1 is discharged through the exhaust pipe 46 to clear the snow on top of the receiving belt 412. During the clearing process, the first transmission roller 415 is driven by the drive motor to rotate and wind up the receiving belt 412. During the winding process, the receiving belt 412 gradually disengages from the second transmission roller 417 and stretches the return spring. As the receiving belt 412 moves, the snow on top gradually approaches the air outlet of the exhaust pipe 46, thereby achieving the purpose of quickly clearing the snow.

[0067] Since the connecting conduit 43 is connected to the lower cavity of the cleaning roller 45, the gas enters the lower cavity of the cleaning roller 45. The heat carried by the gas is absorbed by the lower cavity of the cleaning roller 45 and the pressure bar 49. When the receiving belt 412 is wound up, the snow on the top gradually comes into contact with the outside of the cleaning roller 45. The pressure bar 49 and the lower end of the cleaning roller 45 absorb heat to achieve the purpose of melting the snow, thereby improving the purpose of snow removal.

[0068] The motor drives the first transmission roller 415 to rotate, which in turn winds the receiving belt 412 and simultaneously winds the connecting rope 52. This pulls the first receiving frame 53, the first connecting piece 57, and the toothed block 58 along the first guide rod 55 toward the end of the first transmission roller 415, and compresses the first reset elastic member 56. The toothed block 58 moves and contacts the spring piece 51, thereby pushing the transmission belt 413 and the three cleaning rollers 45 to rotate. The rotation of the cleaning rollers 45 and the pressure strip 49 increases the contact area with the snow. At the same time, the rotation of the cleaning rollers 45 and the pressure strip 49 creates friction with the snow and combines with the heat on the surface of the cleaning rollers 45, thereby improving the efficiency of snow removal.

[0069] During the rotation of the transmission belt 413, the second connecting member 64 moves along the second guide rod 62 and squeezes the second reset elastic member 63. When a toothed block 58 disengages from contact with the spring piece 51, the cleaning roller 45 rotates in the opposite direction and resets under the action of the second reset elastic member 63, so that the next toothed block 58 contacts the spring piece 51. This reciprocating motion drives the cleaning roller 45 to rotate back and forth, improving the snow removal effect.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reverse-flow clean outdoor photovoltaic grid-connected inverter, comprising an inverter body (1), wherein an axial flow cooling fan is provided inside the inverter body (1), and an air inlet (2) and an air outlet (3) are respectively provided on both sides of the inverter body (1), characterized in that, Also includes: Air purification component (4), the air purification component (4) is disposed on the top of the inverter body (1); The air purification component (4) includes a shunt pipe (41) connected to the exhaust port (3), a support frame (44) is fixedly mounted on the top of the inverter body (1), a connecting conduit (43) is fixedly mounted on the side of the support frame (44), and the connecting conduit (43) is connected to the shunt pipe (41) through a connecting hose (42). Cleaning rollers (45) are equidistantly arranged on the receiving frame (44), and an exhaust pipe (46) is fixedly installed on the cleaning rollers (45). The cleaning roller (45) is movably connected to the connecting conduit (43), and the exhaust pipe (46) is connected to the inside of the cleaning roller (45); The receiving frame (44) is provided with a receiving belt (412), and the cleaning roller (45) is located on the receiving belt (412); The receiving frame (44) is fixedly equipped with a support guide frame (414), the height of the cleaning roller (45) gradually decreases from the end near the diversion pipe (41), and the receiving belt (412) passes through the support guide frame (414) and the cleaning roller (45) and its height gradually decreases. The air cleaning component (4) also includes a support roller (416), a first transmission roller (415) and a second transmission roller (417) disposed on the receiving frame (44). Initially, one end of the receiving belt (412) is wound around the second transmission roller (417), and the other end is fixedly connected to the first transmission roller (415); A drive motor is fixedly mounted at one end of the first transmission roller (415), and reset coil springs are provided at both ends of the second transmission roller (417). The drive motor drives the first transmission roller (415) to rotate and wind up the receiving belt (412), so that the receiving belt (412) gradually gets out of the second transmission roller (417) and stretches the reset coil spring.

2. The recoil-air clean outdoor photovoltaic grid-connected inverter according to claim 1, characterized in that: The cleaning roller (45) has two cavities, which are connected by a second connecting hole (48). The upper cavity is connected to the exhaust pipe (46) through a first connecting hole (47), and the lower cavity is connected to the connecting conduit (43).

3. The recoil-air clean outdoor photovoltaic grid-connected inverter according to claim 2, characterized in that: The cleaning roller (45) is fixedly fitted with pressure strips (49) at equal intervals on its exterior, and the exterior of the pressure strips (49) contacts the top of the receiving belt (412). The cleaning roller (45) is cam-shaped.

4. The recoil-air clean outdoor photovoltaic grid-connected inverter according to claim 3, characterized in that: Both ends of the cleaning roller (45) are fixed with drive wheels (411), and a drive belt (413) is sleeved on the outside of the drive wheels (411).

5. The recoil-air clean outdoor photovoltaic grid-connected inverter according to claim 4, characterized in that: The pushing assembly (5) includes a spring piece (51) fixed on the transmission belt (413), a first fixing frame (54) fixed on the side of the receiving frame (44), a first guide rod (55) fixed on the first fixing frame (54), a first receiving frame (53) slidably arranged on the outside of the first guide rod (55) through the first connector (57), toothed blocks (58) fixed at equal intervals on the top of the first receiving frame (53), and a first reset elastic member (56) supporting the first connector (57) on the outside of the first guide rod (55). One end of the first receiving frame (53) is connected to the first transmission roller (415) via a connecting rope (52); The transmission belt (413) is inclined, and the toothed block (58) pushes the spring (51) to move with the transmission belt (413). The height of the connecting rope (52) gradually increases with the transmission belt (413), so that the toothed block (58) disengages from contact with the spring (51).

6. The recoil-air clean outdoor photovoltaic grid-connected inverter according to claim 5, characterized in that: The reset assembly (6) includes a second fixing frame (61) fixedly mounted on the side of the receiving frame (44), a second guide rod (62) fixedly mounted on the second fixing frame (61), the upper end of the transmission belt (413) sliding on the second guide rod (62) through the second connector (64), and a second reset elastic member (63) supporting the second connector (64) is provided on the outside of the second guide rod (62).

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