A wall-mounted photovoltaic inverter that is easy to install and fix

Abstract

The present invention relates to a wall-mounted photovoltaic inverter which is easy to install and fix, comprising an inverter body provided with an unlocking module, the left and right side surfaces of the inverter body are provided with grooves, a plurality of telescopic components with one end extending out of the front side surface of the inverter body are provided in the grooves, a fixing bolt is slidably connected in the telescopic component, the fixing bolt passes through the rear side surface of the inverter body, a closing cover with an air passage is inserted in the groove, the closing cover is provided with a plurality of limiting components inserted in the groove, so that the closing cover is limited and fixed in the groove, the limiting components are connected to the air passage, the closing cover is provided with a driving control component electrically connected to the inverter body, the driving control component is connected to the air passage, so as to realize the plug-in control of the limiting component and the groove, and the cooling fan is electrically connected to the inverter body; the present invention has the advantages of being easy to install and fix while ensuring anti-theft.

Description

Technical Field

[0001] The invention belongs to the technical field of wall-mounted photovoltaic inverters, and in particular relates to a wall-mounted photovoltaic inverter which is easy to install and fix. Background Art

[0002] At present, resource consumption is quite serious, so people have developed solar photovoltaic panels, which can convert the received solar energy into electrical energy. The electrical energy converted from solar energy must then pass through a photovoltaic inverter before it can be effectively used. Therefore, photovoltaic inverters play an important role in photovoltaic power supply devices.

[0003] In the prior art, photovoltaic inverters are mostly fixed directly to walls or other fixed locations by bolts. Although the photovoltaic inverters can be quickly installed and fixed by bolts, other people can disassemble and assemble the photovoltaic inverters by twisting the bolts, which makes the photovoltaic inverters less anti-theft and poses a risk of theft. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a wall-mounted photovoltaic inverter which is easy to install and fix while ensuring anti-theft.

[0005] The technical solution of the present invention is as follows:

[0006] A wall-mounted photovoltaic inverter that is easy to install and fix, comprising an inverter body provided with an unlocking module, the left and right sides of the inverter body are provided with grooves, a plurality of telescopic components are provided in the grooves, one end of which extends out of the front side of the inverter body, a fixing bolt is slidably connected in the telescopic component, and the fixing bolt passes through the rear side of the inverter body;

[0007] A closing cover with an air passage is inserted into the groove, and the closing cover is provided with a plurality of limit assemblies inserted into the groove so that the closing cover is limited and fixed in the groove, and the limit assemblies are connected to the air passage, and the closing cover is provided with a drive control assembly electrically connected to the inverter body, and the drive control assembly is connected to the air passage to realize the plug-in control of the limit assembly and the groove, and the closing cover is provided with a cooling fan connected to the inside of the inverter body 2, and the cooling fan can be driven by the drive control assembly as the air pressure of the air passage decreases, and the cooling fan is electrically connected to the inverter body;

[0008] The closing cover is provided with a strip hole for the telescopic component to pass through, and the end of the telescopic component extending out of the front side of the inverter body can enter the closing cover, and when the closing cover is fully inserted into the groove, the end of the telescopic component extending out of the front side of the inverter body abuts against the closing cover.

[0009] Further, the driving control component includes a driving plate fixed on the inner side of the closing cover, two pressurizing chambers mirror-imaged on the driving plate, a pressurizing component located in the pressurizing chamber, a transmission component that transmits power to the pressurizing component, and two sets of one-way conducting components, wherein the transmission component is connected to the air channel and can transmit power to the cooling fan as the air pressure in the air channel decreases;

[0010] The two groups of one-way conducting components are connected to the opposite sides of the two pressurized chambers respectively, each group of one-way conducting components is two and each group of one-way conducting components is independently connected to the air channel and the inside of the sealing cover.

[0011] Further, the pressurizing assembly includes a piston disk that seals and contacts the side wall of the pressurizing chamber, a reciprocating screw with one end rotatably connected to the opposite sides of the two pressurizing chambers, and a sealing sleeve that is rotatably and sealably connected to the piston disk, the sealing sleeve is mounted on the reciprocating screw, the other end of the reciprocating screw passes through the pressurizing chamber and is connected to the transmission assembly, the other end of the sealing sleeve is sealably connected to the opposite sides of the two pressurizing chambers, and the reciprocating screw is connected to the piston disk to drive the piston disk to move back and forth.

[0012] Further, the driving plate is provided with a mounting cavity connected to the inner wall of the closing cover, the transmission assembly comprises a worm wheel rotatably connected to the mounting cavity and a worm driven by the worm wheel, and the worm wheel is connected to two reciprocating screws;

[0013] A plug-in plate is elastically plugged into the bottom of the cooling fan, a circular hole is axially opened at the center of the circular side surface of the worm, a piston rod is inserted into the circular hole, the piston rod is connected to a resistance rod with one end abutting against the plug-in plate, a transmission plate is provided at one end of the worm facing the plug-in plate, the transmission plate is provided with a circular plug-in groove, and the plug-in plate is provided with a plug-in rod plugged into the plug-in groove.

[0014] Furthermore, the drive plate is provided with four rotating chambers, two of which are respectively connected to the pressurized chamber and the air channel, and the other two rotating chambers are respectively connected to the pressurized chamber and the inside of the closing cover. The one-way conduction component includes a rotating shaft rotatably connected to the rotating chamber, a valve chamber opened in the rotating shaft, a valve core elastically connected in the valve chamber, a rotating component for driving the rotating shaft to rotate 175°-185°, and a magnetic positioning component for limiting the rotation of the rotating shaft. The valve chambers are respectively connected to the rotating shaft so that the valve chambers are connected to the pressurized chamber, the air channel or the inside of the closing cover. The magnetic positioning component is electrically connected to the inverter body, the rotating component is connected to the air channel, and a torsion spring with one end fixed to the rotating shaft is arranged in the rotating chamber.

[0015] Furthermore, the driving plate is provided with a positioning cavity located on one side of the rotating cavity, and the magnetic positioning assembly includes a positioning rod rotatably connected in the positioning cavity, an electromagnet fixed in the positioning cavity, and a magnetic attraction plate sleeved on the positioning rod, the positioning rod is composed of a polygonal rod and a round rod arranged along the same axis, the polygonal rod is located on the side away from the electromagnet and the mounting cavity extends into the positioning cavity and is connected to the polygonal rod, the magnetic attraction plate is slidably connected in the positioning cavity, the magnetic attraction plate is provided with a polygonal hole inserted into the polygonal rod, the round rod can pass through the polygonal hole, the magnetic attraction plate is provided with a reset spring with one end abutting against the electromagnet, and the electromagnet is electrically connected to the inverter body.

[0016] Furthermore, the rotating assembly includes a rotating chamber opened on one side of the rotating chamber, a partition plate sealed and connected in the rotating chamber, a limiting protrusion and a sealing plate, a rotating seal at one end of the rotating shaft passes through the driving plate and extends into the rotating chamber, the rotating shaft rotating seal is connected to the inner wall of the rotating chamber, the sealing plate is sealed and fixed on the rotating shaft and seals against the inner wall of the rotating chamber, the partition plate seals against the rotating shaft so that the rotating chamber is divided into a left chamber and a right chamber, the right chamber is connected to the inside of the closing cover, the left chamber is connected to the air channel, and the limiting protrusion is located in the left chamber.

[0017] Furthermore, the telescopic assembly includes a guide cylinder fixed in the groove and a rotating cylinder inserted in the guide cylinder, the hole on the inner side of the rotating cylinder is a polygonal hole, the fixing bolt is inserted in the polygonal hole, and a magnet is provided at one end of the polygonal hole away from the fixing bolt.

[0018] Furthermore, the limiting assembly includes a sealing cylinder sealed and fixed in the air channel and a limiting column sealed and inserted in the sealing cylinder. The sealing cylinder seals through the closing cover and is flush with the outer side of the closing cover. A convex ring is provided inside one end of the sealing cylinder located in the air channel.

[0019] Furthermore, a mounting plate is fixed in the groove, the mounting plate is provided with an opening connected to the inverter body, a dust net is provided in the opening, a sealing convex ring is sealed and inserted in the opening, a closing plate elastically connected to the inverter body is fixed to the sealing convex ring, and the closing plate is provided with a plurality of sealing push rods that pass through the mounting plate and abut against the closing cover.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes the fixing of the fixing bolts through the telescopic assembly, and realizes the storage of the telescopic assembly through the closing cover, thereby preventing others from twisting the fixing bolts, and realizing multi-point fixing of the closing cover through multiple limit assemblies, thereby ensuring the stability of the fixing of the closing cover, thereby preventing people from maliciously removing the closing cover, and ensuring anti-theft;

[0022] 2. The present invention adopts an unlocking module to realize the sending of unlocking information, and realizes the plug-in control of the limit component and the groove through the drive control component, so as to facilitate disassembly and assembly while ensuring anti-theft. The transmission function based on air pressure is realized between the cooling fan and the drive control component to ensure the plug-in of the limit component and the groove to avoid looseness.

[0023] In conclusion, the present invention has the advantages of ensuring anti-theft and being easy to install and fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic diagram of the side structure of the closed cover after being cut open;

[0026] Figure 3 For the present invention Figure 2 A schematic diagram of the distribution of the air channel machine limit components;

[0027] Figure 4 For the present invention Figure 2 A schematic cross-sectional structure diagram of a closing cover;

[0028] Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0029] Figure 6 For the present invention Figure 4 A magnified schematic diagram of part B;

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the worm gear structure;

[0031] Figure 8 For the present invention Figure 7 Schematic diagram of the transmission disc structure;

[0032] Fig. 9 For the present invention Figure 2 Schematic diagram of the distribution of one-way conductive components;

[0033] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure of part C;

[0034] Fig.11 For the present invention Fig.10 A schematic diagram of the rotating assembly structure;

[0035] Fig.12 For the present invention Figure 3 Schematic diagram of the limit component structure;

[0036] Fig.13 For the present invention Figure 1 Schematic diagram of the telescopic component structure;

[0037] Fig.14 For the present invention Figure 1 Schematic diagram of the structure after the closing plate is removed;

[0038] Fig.15 For the present invention Fig.14 Schematic diagram of the structure of the closing plate.

[0039] In the figure, 1, rotating cylinder, 101, guide cylinder, 102, magnet, 2, inverter body, 3, sealing strip, 4, closing cover, 41, limiting assembly, 411, limiting column, 412, sealing cylinder, 42, air channel, 44, strip hole, 45, cooling fan, 5, fixing bolt, 6, driving plate, 61, sealing sleeve, 62, pressurizing chamber, 63, worm gear, 64, worm, 641, piston rod, 642, resistance rod, 643, transmission plate, 644, plug plate, 645, plug rod, 6 46. ​​Plug-in slot, 65. One-way conduction component, 651. Sealing plate, 652. Partition plate, 653. Rotating chamber, 654. Limiting protrusion, 655. Rotating shaft, 656. Valve core, 657. Valve chamber, 658. Magnetic plate, 659. Reset spring, 650. Electromagnet, 66. Mounting chamber, 67. Piston disc, 68. Reciprocating screw, 7. Dustproof net, 8. Closing plate, 81. Push rod, 82. Sealing convex ring, 9. Mounting plate, 10. Interface, 11. Connector, 12. Unlocking module. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1-15 As shown, a wall-mounted photovoltaic inverter that is easy to install and fix includes an inverter body 2 provided with an unlocking module 12, grooves are provided on both left and right sides of the inverter body 2, a plurality of round holes are provided on the front side of the inverter body 2, a plurality of telescopic components are provided in the grooves, one end of which extends from the round holes to the front side of the inverter body 2, a fixing bolt 5 is slidably connected in the telescopic component, and the fixing bolt 5 passes through the rear side of the inverter body 2;

[0042] A closing cover 4 with an air passage 42 is inserted into the groove, a sealing strip 3 is glued to the side of the closing cover 4 to seal with the groove, a plurality of holes are opened in the groove, a plurality of limiting components 41 are provided on the closing cover 4 to be fixed in the groove, the limiting components 41 are connected to the air passage 42, a driving control component is provided on the closing cover 4, and the driving control component is connected to the air passage 42 to realize the plug-in control of the limiting component 41 and the groove, a cooling fan 45 connected to the inside of the inverter body 2 is fixed on the closing cover 4, and the cooling fan 45 can be driven by the driving control component as the air pressure of the air passage 42 decreases;

[0043] The closing cover 4 is provided with a strip hole 44 for the telescopic assembly to pass through, wherein the strip hole 44 located on the front side of the closing cover 4 is smaller than the strip hole 44 located on the rear side of the closing cover 4, so that under the same displacement distance, when the telescopic assembly contacts the side of the strip hole 44 located on the rear side of the closing cover 4, the front end of the telescopic assembly has already abutted against the inner wall of the closing cover 4, and the end of the telescopic assembly extending out of the front side of the inverter body 2 can enter the closing cover 4, and when the closing cover 4 is fully inserted into the groove, the end of the telescopic assembly extending out of the front side of the inverter body 2 abuts against the closing cover 4;

[0044] The unlocking module 12 is specifically a passive lock, which is unlocked by an electronic key. A battery and a control module are arranged inside the inverter body 2. The control module is electrically connected to the drive control component and the cooling fan 45, and the passive lock is electrically connected to the control module. When the passive lock is unlocked, the control module controls the drive control component and the cooling fan 45 to work, so that the limit component 41 is no longer inserted in the groove. The function of the control module includes the ability to control the on-off of the current based on the signal. The passive lock, the battery, and the control module capable of controlling the on-off of the current based on the signal are all prior arts, so they are not described in detail. The control module is connected to the inverter body 2;

[0045] The cooling fan 45 and the drive control assembly are both connected to a connector 11 fixed on the closed cover 4, and the control module is connected to an interface 10 located on the inverter body 2. The cooling fan 45, the drive control assembly and the control module are electrically connected through the cooperation of the connector 11 and the interface 10;

[0046] When in use, the fixing bolt 5 is fixed to the wall or a fixed position through the telescopic component, and then the telescopic component is controlled to retract, and then the closing cover 4 is pushed so that the closing cover 4 is inserted into the groove. At this time, one end of the telescopic component is in contact with the closing cover 4, and the interface 10 is plugged into the connector 11. The control module controls the cooling fan 45 to rotate. Since the air pressure in the air channel 42 is relatively low at this time, the cooling fan 45 drives the driving control component to work, and the driving control component inflates the air channel 42. As the pressure in the air channel 42 gradually increases, the limiting component 41 is gradually inserted into the hole on the groove. When the limiting component 41 is completely inserted into the groove, the pressure in the air channel 42 reaches the maximum, and the driving control component and the cooling fan 45 are no longer driven.

[0047] After a period of time, the air in the air channel 42 is lost, so that the pressure in the air channel 42 is reduced. However, at this time, the limit assembly 41 is still inserted into the hole of the groove. When the cooling fan 45 rotates, the cooling fan 45 continues to replenish air for the air channel 42 through the driving control assembly to ensure the insertion of the limit assembly 41.

[0048] When it needs to be removed, the electronic key is inserted into the unlocking module 12, and the unlocking module 12 sends an unlocking signal. After receiving the control signal, the control module controls the drive control component to switch the direction of unidirectional conduction. At this time, the air in the air channel 42 is discharged through the drive control component. When the air in the air channel 42 is no longer discharged, the cooling fan works and drives the drive control component to work. At this time, the drive control component extracts the air in the air channel 42 so that the limit component 41 is pulled out from the hole in the groove. After the personnel removes the closing cover 4, the cooling fan 45 stops working.

[0049] In this embodiment, the driving control assembly includes a driving plate 6 fixed to the inner side of the closing cover 4, two pressurizing chambers 62 mirror-imaged on the driving plate 6, a pressurizing assembly located in the pressurizing chamber 62, a transmission assembly that transmits power to the pressurizing assembly, and two sets of unidirectional conducting assemblies 65, wherein the transmission assembly is connected to the air channel 42 and can transmit power to the cooling fan 45 as the air pressure in the air channel 42 decreases;

[0050] Two groups of one-way conducting components 65 are connected to the opposite sides of the two pressurizing chambers 62, and each group of one-way conducting components 65 is two and each group of one-way conducting components 65 is independently connected to the air channel 42 and the inside of the sealing cover 4;

[0051] When installation is required, since the air pressure in the air channel 42 has not reached the maximum pressure for driving the limit assembly 41, the transmission assembly and the cooling fan 45 are in transmission, the cooling fan 45 works and drives the pressurizing assembly to work through the transmission assembly, and the pressurizing assembly squeezes the air in the pressurizing chamber 62, and the air in the pressurizing chamber 62 enters the air channel 42 through the one-way conductive assembly 65, and when the pressurizing assembly is reset, the air inside the closing cover 4 enters the pressurizing chamber 62 through the one-way conductive assembly 65, thereby realizing continuous pressurization of the air channel 42 until the air pressure in the air channel 42 reaches the maximum pressure for driving the limit assembly 41, at which time the transmission assembly and the cooling fan 45 are no longer in transmission;

[0052] When the air pressure in the air passage 42 decreases, when the cooling fan 45 performs heat dissipation, the cooling fan 45 supplements the pressure in the air passage 42 through the transmission component and the pressurizing component;

[0053] When it is necessary to remove, the unidirectional conduction directions of the two sets of unidirectional conduction components 65 are switched so that the air in the air channel 42 can be discharged. When the air in the air channel 42 is no longer discharged, the cooling fan 45 works and extracts the air in the air channel 42 through the transmission component and the pressurizing component, so that the limit component 41 is no longer inserted in the hole of the groove.

[0054] In this embodiment, the pressurizing assembly includes a piston disc 67 that seals and contacts the side wall of the pressurizing chamber 62, a reciprocating screw 68 that is rotatably connected at one end to the opposite sides of the two pressurizing chambers 62, and a sealing sleeve 61 that is rotatably and sealably connected to the piston disc 67, wherein the pressurizing chamber 62 and the piston disc 67 are both polygons of the same shape and size so that the piston disc 67 cannot rotate, the sealing sleeve 61 is sleeved on the reciprocating screw 68, the other end of the reciprocating screw 68 passes through the pressurizing chamber 62 and is connected to the transmission assembly, the other end of the sealing sleeve 61 is sealably connected to the opposite sides of the two pressurizing chambers 62, and the reciprocating screw 68 is connected to the piston disc 67 to drive the piston disc 67 to move back and forth;

[0055] When in use, the rotation of the reciprocating screw 68 drives the piston disc 67 to move back and forth in the pressurizing chamber 62, so that the hole in the pressurizing chamber 62 enters the air channel 42. When it needs to be removed, the air in the pressurizing chamber 62 is discharged through the reciprocating movement of the piston disc 67, thereby ensuring the pressurization and reduction of the air channel 42. The sealing sleeve 61 is arranged to prevent air from being discharged from the connection between the piston disc 67 and the reciprocating screw 68, thereby ensuring pressurization and reduction.

[0056] In this embodiment, the drive plate 6 is provided with a mounting cavity 66 connected to the inner wall of the closing cover 4, and the transmission assembly includes a worm gear 63 rotatably connected in the mounting cavity 66 and a worm 64 driven by the worm gear 63, and the worm gear 63 is connected to two reciprocating screws 68;

[0057] A plug-in plate 644 is plugged into the bottom of the cooling fan 45, and a spring is sleeved on the plug-in plate 644, and both ends of the spring abut against the plug-in plate 644 and the cooling fan 45. A circular hole is axially provided at the center of the circular side surface of the worm 64, and a piston rod 641 is plugged into the circular hole. The piston rod 641 is fixedly connected to a contact rod 642 with one end abutting against the plug-in plate 644. A transmission plate 643 is fixed to the end of the worm 64 facing the plug-in plate 644, and the transmission plate 643 is provided with a circular plug-in groove 646. A plug-in rod 645 plugged into the plug-in groove 646 is fixed to the plug-in plate 644, and a convex block is fixed in the middle of the plug-in groove 646, so that the transmission plate 643 can realize transmission with the plug-in plate 644 through the arrangement of the plug-in groove 646 and the plug-in rod 645.

[0058] When in use, the cooling fan 45 rotates. Since the pressure in the air passage 42 does not reach the maximum pressure of the driving limit assembly 41, the plug-in rod 645 is plugged into the plug-in slot 646, the transmission plate 643 and the plug-in plate 644 are driven, the plug-in plate 644 drives the worm 64 and the worm gear 63 to rotate, and the worm gear 63 drives the reciprocating screw 68 to rotate. When the pressure in the air passage 42 reaches the maximum pressure of the driving limit assembly 41, the piston rod 641 moves along the circular hole and pushes the plug-in plate 644 to move through the abutment rod 642, so that the plug-in rod 645 and the plug-in slot 646 are no longer plugged in.

[0059] Preferably, a motor fixed on the closing cover 4 is provided on one side of the cooling fan 45, and a gear rotatably connected to the closing cover 4 is provided below the motor. The gear and the motor are driven by a ratchet and pawl structure, and the gear meshes with the plug-in disk 644. The thickness of the gear is greater than the displacement length of the plug-in disk 644, so that the plug-in disk 644 can still be driven with the gear when it moves up and down. When transmitting, the cooling fan 45 is driven twice by the motor and the gear to ensure that the worm 64 can be driven to rotate. When the motor no longer rotates, under the action of the one-way transmission of the ratchet and pawl, the cooling fan 45 will not drive the motor shaft to rotate through the gear, thereby ensuring heat dissipation. The motor, gear and ratchet and pawl structure are not shown in the figure.

[0060] In this embodiment, the driving plate 6 is provided with four rotating chambers, two of which are connected to the pressurized chamber 62 and the air channel 42 respectively, and the other two are connected to the pressurized chamber 62 and the inside of the closing cover 4 respectively. The one-way conducting component 65 includes a rotating shaft 655 connected to the rotating chamber by a sealing gasket, a valve chamber 657 provided in the rotating shaft 655, a valve core 656 elastically connected to the valve chamber 657 by a spring, a rotating component for driving the rotating shaft 655 to rotate 175°-185°, and a magnetic positioning component for limiting the rotation of the rotating shaft 655. The valve chamber 657 is divided into

[0061] The rotating shaft 655 is connected to each other so that the valve chamber 657 is connected to the pressurized chamber 62, the air passage 42 or the inside of the closing cover 4, the magnetic positioning assembly is electrically connected to the control module, the rotating assembly is connected to the air passage 42, and a torsion spring with one end fixed to the rotating shaft 655 is fixed in the rotating chamber;

[0062] When it is necessary to pressurize the air channel 42, the two magnetic positioning components on each pressurizing chamber 62 are not energized, the rotating shaft 655 does not rotate, the air in the pressurizing chamber 62 enters the air channel 42 through the valve chamber 657, and the air in the closing cover 4 enters the pressurizing chamber 62 to achieve pressurization, and when the piston plate 67 reciprocates, under the action of the valve core 656, the air in the air channel 42 will not enter the pressurizing chamber 62, and the air in the pressurizing chamber 62 will not enter the interior of the closing cover 4;

[0063] When the pressure needs to be reduced, the magnetic positioning component is energized for 5-10 seconds. At this time, the rotating component drives the rotating shaft 655 to rotate under the action of the pressure in the air channel 42. Within 5-10 seconds, the rotating shaft 655 rotates 175°-185°, and then the magnetic positioning component is powered off, and the rotating shaft 655 rotates to a limit position so that the air in the air channel 42 can enter the pressurized chamber 62, and the air in the extrusion chamber can enter the inside of the closing cover 4.

[0064] In this embodiment, the driving plate 6 is provided with a positioning cavity located on one side of the rotating cavity. The magnetic positioning assembly includes a positioning rod rotatably connected in the positioning cavity, an electromagnet 650 fixed in the positioning cavity, and a magnetic attraction plate 658 sleeved on the positioning rod. The positioning rod is composed of a polygonal rod and a round rod arranged along the same axis. The polygonal rod is located on the side away from the electromagnet 650 and the rotating shaft 655 extends into the positioning cavity and is connected to the polygonal rod. The magnetic attraction plate 658 is slidably connected in the positioning cavity so that the magnetic attraction plate 658 can only be displaced but not rotated. The magnetic attraction plate 658 is provided with a polygonal hole plugged into the polygonal rod, and the round rod can pass through the polygonal hole. The magnetic attraction plate 658 is provided with a reset spring 659 with one end abutting against the electromagnet 650. The electromagnet 650 is electrically connected to the control module.

[0065] When the air channel 42 needs to be pressurized, since the pressure in the air channel 42 is relatively low, the electromagnet 650 attracts the magnetic plate 658, and at this time the torsion spring can drive the rotating shaft 655 to rotate, so that the rotating shaft 655 rotates clockwise. When the power-on time is up, the electromagnet 650 is powered off, and the reset spring 659 pushes the polygonal hole of the magnetic plate 658 to be plugged into the polygonal rod, and the rotating shaft 655 rotates to a limit position;

[0066] When the air passage 42 needs to be depressurized, the electromagnet 650 is powered off. Since the pressure in the air passage 42 is relatively high, the rotating shaft 655 rotates under the action of the rotating assembly. Then the electromagnet 650 is powered off, and the reset spring 659 pushes the magnetic suction plate 658 to reset. The rotating shaft 655 cannot rotate, and the air passage 42 is depressurized.

[0067] In this embodiment, the rotating assembly includes a rotating chamber 653 opened on one side of the rotating chamber, a partition plate 652 sealed and connected in the rotating chamber, a limiting protrusion 654 and a sealing plate 651. One end of the rotating shaft 655 is rotatingly sealed and passes through the driving plate 6 and extends into the rotating chamber 653. One end of the rotating shaft 655 is rotatingly sealed and connected to the inner wall of the rotating chamber 653. The sealing plate 651 is sealingly fixed on the rotating shaft 655 and abuts against the inner wall of the rotating chamber 653 for sealing. The partition plate 652 is sealingly abutted against the rotating shaft 655, so that the rotating chamber 653 is divided into a left chamber and a right chamber. The right chamber is connected to the inside of the closing cover 4, and the left chamber is connected to the air channel 42. The limiting protrusion 654 is located in the left chamber. The maximum angle between the limiting protrusion 654 and the partition plate 652 is 175°-185°. The sealing plate 651 is located between the maximum angle of the limiting protrusion 654 and the partition plate 652.

[0068] When the air channel 42 needs to be depressurized, the air in the air channel 42 drives the rotating shaft 655 to rotate 175°-185° by pushing the sealing plate 651. When the sealing plate 651 rotates, the air between the sealing plate 651 and the partition plate 652 is discharged into the interior of the closing cover 4. When the air channel 42 needs to be increased, under the action of the torsion spring, the sealing plate 651 rotates and resets and abuts against the limiting protrusion 654.

[0069] In this embodiment, the telescopic assembly includes a guide cylinder 101 fixed in the groove and a rotating cylinder 1 inserted in the guide cylinder 101. The hole inside the rotating cylinder 1 is a polygonal hole, and the fixing bolt 5 is inserted in the polygonal hole. A magnet 102 is provided at one end of the polygonal hole away from the fixing bolt 5.

[0070] When in use, the fixing bolt 5 is driven to rotate by the rotating cylinder 1 to achieve the fixing and removal of the fixing bolt 5. The provision of the magnet 102 facilitates personnel to use iron tools to adsorb the magnet 102 and pull out the rotating cylinder 1.

[0071] In this embodiment, the limiting assembly 41 includes a sealing cylinder 412 sealed and fixed in the air passage 42 and a limiting column 411 sealed and inserted in the sealing cylinder 412. The sealing cylinder 412 seals through the closing cover 4 and is flush with the outer side of the closing cover 4. A convex ring is provided inside one end of the sealing cylinder 412 located in the air passage 42.

[0072] When in use, the limiting column 411 is gradually inserted into and removed from the hole of the groove after the pressure in the air channel 42 increases and decreases, thereby ensuring that the protective cover is fixed stably.

[0073] In this embodiment, a mounting plate 9 is fixed in the groove, the mounting plate 9 is provided with an opening communicating with the inverter body 2, a dust screen 7 is provided in the opening, a sealing convex ring 82 is sealed and inserted in the opening, a closing plate 8 slidably connected in the inverter body 2 is fixed to the sealing convex ring 82, the closing plate 8 is elastically connected to the inverter body 2 through a spring, and a plurality of sealing push rods 81 are fixed to the closing plate 8 that pass through the mounting plate 9 and abut against the closing cover 4;

[0074] When in use, the closing cover 4 is inserted into the groove, and the closing cover 4 pushes the sealing convex ring 82 through the push rod 81 so that it is no longer sealed and inserted in the opening. At this time, the inverter body 2 can dissipate heat. When the closing cover 4 is not installed, the closing plate 8 pushes the sealing convex ring 82 to be sealed and inserted in the opening under the action of the spring, thereby ensuring the dustproof effect of the inverter body 2.

[0075] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wall-mounted photovoltaic inverter that is easy to install and fix, comprising an inverter body provided with an unlocking module, characterized in that: The left and right sides of the inverter body are provided with grooves, and a plurality of telescopic components are arranged in the grooves, one end of which extends out of the front side of the inverter body, and a fixing bolt is slidably connected in the telescopic component, and the fixing bolt passes through the rear side of the inverter body; A closing cover with an air passage is inserted into the groove, and the closing cover is provided with a plurality of limit assemblies inserted into the groove so that the closing cover is limited and fixed in the groove, and the limit assemblies are connected to the air passage, and the closing cover is provided with a drive control assembly electrically connected to the inverter body, and the drive control assembly is connected to the air passage to realize the plug-in control of the limit assembly and the groove, and the closing cover is provided with a cooling fan connected to the inside of the inverter body, and the cooling fan can be driven by the drive control assembly as the air pressure of the air passage decreases, and the cooling fan is electrically connected to the inverter body; The closing cover is provided with a strip-shaped hole for the telescopic component to pass through, and one end of the telescopic component extending out of the front side of the inverter body can enter the closing cover, and when the closing cover is fully inserted into the groove, the end of the telescopic component extending out of the front side of the inverter body abuts against the closing cover; The driving control assembly includes a driving plate fixed on the inner side of the closing cover, two pressurizing chambers mirror-imaged on the driving plate, a pressurizing assembly located in the pressurizing chamber, a transmission assembly that transmits power to the pressurizing assembly, and two sets of one-way conducting assemblies, wherein the transmission assembly is connected to the air channel and can transmit power to the cooling fan as the air pressure in the air channel decreases; The two groups of one-way conducting components are connected to the opposite sides of the two pressurized chambers respectively, each group of one-way conducting components is two and each group of one-way conducting components is independently connected to the air channel and the inside of the sealing cover.

2. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 1 is characterized in that: The pressurizing assembly includes a piston disk that seals and contacts the side wall of the pressurizing chamber, a reciprocating screw with one end rotatably connected to the opposite sides of the two pressurizing chambers, and a sealing sleeve that is rotatably and sealably connected to the piston disk. The sealing sleeve is mounted on the reciprocating screw, and the other end of the reciprocating screw passes through the pressurizing chamber and is connected to the transmission assembly. The other end of the sealing sleeve is sealably connected to the opposite sides of the two pressurizing chambers. The reciprocating screw is connected to the piston disk to drive the piston disk to move back and forth.

3. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 2 is characterized in that: The drive plate is provided with a mounting cavity connected to the inner wall of the closing cover, the transmission assembly comprises a worm wheel rotatably connected to the mounting cavity and a worm driven by the worm wheel, and the worm wheel is connected to two reciprocating screws; A plug-in plate is elastically plugged into the bottom of the cooling fan, a circular hole is axially opened at the center of the circular side surface of the worm, a piston rod is inserted into the circular hole, the piston rod is connected to a resistance rod with one end abutting against the plug-in plate, a transmission plate is provided at one end of the worm facing the plug-in plate, the transmission plate is provided with a circular plug-in groove, and the plug-in plate is provided with a plug-in rod plugged into the plug-in groove.

4. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 3 is characterized in that: The driving plate is provided with four rotating chambers, two of which are respectively connected to the pressurized chamber and the air channel, and the other two rotating chambers are respectively connected to the pressurized chamber and the inside of the closing cover. The one-way conduction component includes a rotating shaft rotatably connected to the rotating chamber, a valve chamber opened in the rotating shaft, a valve core elastically connected in the valve chamber, a rotating component for driving the rotating shaft to rotate 175°-185°, and a magnetic positioning component for limiting the rotation of the rotating shaft. The valve chambers are respectively connected to the rotating shaft so that the valve chambers are connected to the pressurized chamber, the air channel or the inside of the closing cover. The magnetic positioning component is electrically connected to the inverter body, the rotating component is connected to the air channel, and a torsion spring with one end fixed to the rotating shaft is arranged in the rotating chamber.

5. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 4 is characterized in that: The driving plate is provided with a positioning cavity located on one side of the rotating cavity. The magnetic positioning assembly includes a positioning rod rotatably connected in the positioning cavity, an electromagnet fixed in the positioning cavity, and a magnetic attraction plate sleeved on the positioning rod. The positioning rod is composed of a polygonal rod and a round rod arranged along the same axis. The polygonal rod is located on the side away from the electromagnet and the mounting cavity extends into the positioning cavity and is connected to the polygonal rod. The magnetic attraction plate is slidably connected in the positioning cavity. The magnetic attraction plate is provided with a polygonal hole plugged into the polygonal rod. The round rod can pass through the polygonal hole. The magnetic attraction plate is provided with a reset spring with one end abutting against the electromagnet. The electromagnet is electrically connected to the inverter body.

6. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 5 is characterized in that: The rotating assembly includes a rotating chamber opened on one side of the rotating chamber, a partition plate sealed and connected in the rotating chamber, a limiting protrusion and a sealing plate. The rotating seal at one end of the rotating shaft passes through the driving plate and extends into the rotating chamber. The rotating shaft rotating seal is connected to the inner wall of the rotating chamber. The sealing plate is sealed and fixed on the rotating shaft and seals against the inner wall of the rotating chamber. The partition plate seals against the rotating shaft so that the rotating chamber is divided into a left chamber and a right chamber. The right chamber is connected to the inside of the closing cover, and the left chamber is connected to the air channel. The limiting protrusion is located in the left chamber.

7. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 1 is characterized in that: The telescopic assembly includes a guide cylinder fixed in the groove and a rotating cylinder inserted in the guide cylinder. The hole on the inner side of the rotating cylinder is a polygonal hole. The fixing bolt is inserted in the polygonal hole. A magnet is provided at one end of the polygonal hole away from the fixing bolt.

8. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 1 is characterized in that: The limiting assembly includes a sealing cylinder sealed and fixed in the air channel and a limiting column sealed and inserted in the sealing cylinder. The sealing cylinder seals through the closing cover and is flush with the outer side of the closing cover. A convex ring is arranged inside one end of the sealing cylinder located in the air channel.

9. The wall-mounted photovoltaic inverter that is easy to install and fix according to claim 1 is characterized in that: A mounting plate is fixed in the groove, the mounting plate is provided with an opening connected to the inverter body, a dust screen is provided in the opening, a sealing convex ring is sealed and inserted in the opening, a closing plate elastically connected to the inverter body is fixed to the sealing convex ring, and the closing plate is provided with a plurality of sealing push rods that pass through the mounting plate and abut against the closing cover.

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