Active air duct heat dissipation mechanism of photovoltaic inverter room

Abstract

The invention discloses an active air duct heat dissipation mechanism for a photovoltaic inverter room, and belongs to the technical field of photovoltaic inverter heat dissipation, the active air duct heat dissipation mechanism comprises a support, an inverter body is arranged on one side of the support, an active heat dissipation mechanism is arranged on the outer surface of the support, a passive heat dissipation mechanism is arranged on one side of the inverter body, and the passive heat dissipation mechanism is arranged on the outer surface of the support. The passive heat dissipation mechanism comprises a plurality of heat dissipation fins, the top end of the inverter body is fixedly connected with a heat collection cover, the active heat dissipation mechanism comprises a frame rod and a flow guide grid, and the top end of a shaft rod is fixedly connected with a plurality of fan blades. According to the scheme, the plurality of heat dissipation fins are installed on the back side of the inverter body, and the active heat dissipation mechanism which is automatically controlled through the temperature sensor is arranged below the heat dissipation fins, so that air flow is increased through air flow from bottom to top generated by a heat conduction mode of the heat dissipation fins and rotation of fan blades at different temperatures of the inverter body; and the inverter body is cooled, so that normal use of the inverter body is prevented from being influenced by over-high temperature in the inverter body during working.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic inverter heat dissipation technology, more particularly to a photovoltaic inverter room active air duct heat dissipation mechanism. BACKGROUND

[0002] The photovoltaic inverter is a power electronic device that can convert the variable DC voltage generated by the photovoltaic solar panel into commercial frequency AC power, which can be fed back to the commercial power transmission system or used for off-grid power grid. When working, the DC voltage is converted into high-frequency AC power by using power electronic conversion technology, and then the voltage conversion and isolation are performed through the transformer or the architecture without transformer. Finally, the high-frequency AC power is converted into commercial frequency AC power that meets the requirements of the power grid through filtering and control circuit.

[0003] During the operation of the photovoltaic inverter, the power electronic components will generate a large amount of heat due to energy conversion. Since the installation environment of the photovoltaic inverter and the photovoltaic panel is usually exposed, it will directly receive the sun's radiation, which, combined with the heat generated during the operation of the photovoltaic inverter, will make the temperature of the photovoltaic inverter during operation relatively high. If the heat cannot be dissipated in time, it will cause the temperature of the components to be too high, affecting the efficiency, service life of the inverter, and even causing failure.

[0004] Therefore, the present application provides a photovoltaic inverter room active air duct heat dissipation mechanism. SUMMARY

[0005] In view of the problem in the prior art that the power electronic components will generate a large amount of heat due to energy conversion during the operation of the photovoltaic inverter, and since the installation environment of the photovoltaic inverter and the photovoltaic panel is usually exposed, it will directly receive the sun's radiation, which, combined with the heat generated during the operation of the photovoltaic inverter, will make the temperature of the photovoltaic inverter during operation relatively high. If the heat cannot be dissipated in time, it will cause the temperature of the components to be too high, affecting the efficiency, service life of the inverter, and even causing failure, the purpose of the present application is to provide a photovoltaic inverter room active air duct heat dissipation mechanism.

[0006] To solve the above problems, the present application adopts the following technical solutions.

[0007] A photovoltaic inverter room active air duct heat dissipation mechanism, comprising a support, one side of the support is provided with an inverter body, one end of the support is fixed with one side of the inverter body by welding, the outer surface of the support is provided with an active heat dissipation mechanism, and one side of the inverter body is provided with a passive heat dissipation mechanism.

[0008] Further, the passive heat dissipation mechanism comprises a plurality of heat dissipation fins linearly distributed on one side of the inverter body, a heat collecting cover is fixedly connected to the top end of the inverter body, the inner wall bottom end of the heat collecting cover is larger than the inner wall top end, the heat collecting cover is installed on the top end of the heat dissipation fins, the active heat dissipation mechanism comprises a frame rod and a flow guide grid, the frame rod is fixedly connected to the bottom end of the bracket, a filter screen is fixedly connected to the inner wall bottom end of the frame rod, a frame rod is arranged in the frame rod, a plurality of shaft rods are rotatably connected to the inner wall of the frame rod, two pulleys are fixedly connected to the outer surface of the shaft rod, a plurality of fan blades are fixedly connected to the top end of the shaft rod, a belt is sleeved on the outer side of the pulleys of two adjacent shaft rods, a first servo motor is arranged at the bottom end of the frame rod, the output end of the first servo motor is fixedly connected to the bottom end of one shaft rod through a shaft coupling, the outer surface of the inverter body is provided with a slot on both sides, the flow guide grid is fixedly connected with an insertion block on both sides, the inner part of the flow guide grid is in a honeycomb shape, and a temperature sensor is arranged in the inverter body.

[0009] Further, the top end width of the heat dissipation fin is smaller than the bottom end width, and the bottom end edge of the heat dissipation fin is arc-shaped.

[0010] Further, the top end of the inverter body is fixedly connected with a guide plate, the outer surface of the guide plate is arc-shaped, and the guide plate is located at the top end of the heat collecting cover.

[0011] Further, the two sides of the inverter body are provided with a limiting component which can further fasten the installation position of the flow guide grid on the outer surface of the inverter body.

[0012] Further, the limiting component comprises a rotating shaft, a clamping block is fixedly connected to the outer surface of the rotating shaft, a coil spring is arranged at one end of the rotating shaft, and the two ends of the coil spring are fixedly connected to one side of the rotating shaft and one side of the outer surface of the inverter body respectively, and a clamping groove is formed in the outer surface of the insertion block.

[0013] Further, one side of the clamping block is fixedly connected with an auxiliary sheet, and a protruding rod is arranged at the end of the auxiliary sheet away from the clamping block.

[0014] Further, anti-skid sheets are fixedly connected to both sides of the flow guide grid, and a plurality of protrusions are arranged on the surface of the anti-skid sheet.

[0015] Further, the outer surface of the frame rod is provided with a cleaning mechanism, the cleaning mechanism comprises a timer and a second servo motor, the timer and the second servo motor are installed at one end of the outer surface of the frame rod, the timer is electrically connected with the second servo motor, the output end of the second servo motor is provided with a lead screw through a shaft coupling, the lead screw is rotatable at the outer surface of the frame rod, the outer surface of the frame rod is slidably connected with a U-shaped rod, one side of the U-shaped rod is fixedly connected with a threaded cylinder, the inner wall of the threaded cylinder is threadedly connected with the outer surface of the lead screw, the outer surface of the U-shaped rod is fixedly connected with a plurality of brush pieces, the end of the lead screw away from the second servo motor is fixedly connected with a chain wheel, the side of the outer surface of the inverter body close to the heat dissipation fins is also rotatably connected with a chain wheel, the outer surfaces of the two chain wheels are sleeved with a chain, one side of the chain is provided with a sliding rod through a fastener, the sliding rod is slidable at the outer surface of the inverter body, the outer surface of the sliding rod is fixedly connected with a plurality of scraping strips, and the two scraping strips are located on the two sides of one heat dissipation fin respectively.

[0016] Further, one side of the U-shaped rod is slidably connected with a sliding block, the top end of the sliding block is provided with a spring, the upper and lower ends of the spring are fixedly connected with one side of the U-shaped rod and one side of the top end of the sliding block respectively, the bottom end of the sliding block is fixedly connected with a plurality of knocking rods, the top end of the sliding block is rotatably connected with a positioning wheel, one side of the frame rod is fixedly connected with a plurality of guide blocks, the outer surface of the guide block is V-shaped, and the guide blocks are linearly arranged on one side of the frame rod.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] (1) By installing a plurality of heat dissipation fins on the back side of the inverter body, and setting an automatic active heat dissipation mechanism below the heat dissipation fins controlled by a temperature sensor, the inverter body is cooled by heat conduction through the heat dissipation fins and the air flow generated by the rotation of the fan blades from bottom to top, increasing air flow, avoiding the influence of high internal temperature on normal use when the inverter body is working;

[0019] (2) By setting a heat collecting cover at the top end of the heat dissipation fins, the upward hot air flow during heat dissipation can be concentrated, the rate of heat dissipation through the top end of the heat dissipation fins is improved, and the heat dissipation effect of the back surface of the inverter body during operation is improved;

[0020] (3) By setting a honeycomb-shaped flow guide grid, the wind power generated by the active heat dissipation mechanism can uniformly enter the outer surface of the heat dissipation fins, the contact effect of the wind power generated by the active heat dissipation mechanism with the surface of the heat dissipation fins is improved, and the heat dissipation efficiency is further improved;

[0021] (4) By setting the cleaning mechanism, by installing the second servo motor driven by the timer on the outer surface of the frame rod, controlling the second servo motor to operate according to the set time period to control the U-shaped rod and the slide rod to move at the bottom end of the frame rod and one side of the heat dissipation fin respectively, the brush piece on the outer surface of the U-shaped rod and the scraping strip on the outer surface of the slide rod are used to clean the filter screen at the bottom end of the frame rod and the outer surface of the heat dissipation fin respectively, as far as possible to avoid the filter screen at the bottom end of the frame rod to accumulate more dust to affect the air inlet efficiency of the active heat dissipation mechanism in the frame rod, and avoid the outer surface of the heat dissipation fin to adhere more dust to affect the heat conduction effect of the heat dissipation fin, so as to further improve the heat dissipation effect of the passive heat dissipation mechanism and the active heat dissipation mechanism on the operation of the inverter body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the application;

[0023] Figure 2 It is the structure schematic diagram of the inverter body in the application;

[0024] Figure 3 It is the A local enlarged structure schematic diagram of the application; Figure 2

[0025] Figure 4 It is the local section structure schematic diagram of the inverter body in the application;

[0026] Figure 5 It is the structure schematic diagram of the heat dissipation fin in the application;

[0027] Figure 6 It is the B local enlarged structure schematic diagram of the application; Figure 5

[0028] Figure 7 It is the structure schematic diagram of the frame rod in the application;

[0029] Figure 8 It is the structure schematic diagram of the filter screen in the application;

[0030] Figure 9 It is the local section structure schematic diagram of the frame rod in the application;

[0031] Figure 10 It is the structure schematic diagram of the flow guide grid in the application;

[0032] Figure 11 It is the local section structure schematic diagram of the U-shaped rod in the application;

[0033] Figure 12 It is the working flow chart of the temperature sensor and the first servo motor in the application;

[0034] ​​Figure 13 The working flow chart of the timer and the second servo motor in the application.

[0035] Explanation of the figure labels:

[0036] 1, support; 2, active heat dissipation mechanism; 21, frame rod; 22, frame rod; 23, shaft rod; 24, fan blade; 25, first servo motor; 26, pulley; 27, belt; 28, filter screen; 29, limiting assembly; 291, rotating shaft; 292, coil spring; 293, clamping block; 294, clamping groove; 295, auxiliary piece; 210, temperature sensor; 211, flow guide grid; 212, plug; 213, slot; 214, anti-skid piece; 3, passive heat dissipation mechanism; 31, heat dissipation fin; 32, heat collecting cover; 33, guide plate; 4, inverter body; 5, cleaning mechanism; 51, timer; 52, second servo motor; 53, lead screw; 54, sprocket; 55, chain; 56, sliding rod; 57, scraping strip; 58, U-shaped rod; 59, brush piece; 510, threaded cylinder; 511, sliding block; 512, spring; 513, knocking rod; 514, positioning wheel; 515, guide block. DETAILED DESCRIPTION

[0037] 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 a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0038] Please refer to Figures 1-2 An active air duct heat dissipation mechanism of a photovoltaic inverter chamber, comprising a support 1, the support 1 is provided with an inverter body 4 on one side, the support 1 is fixed to one side of the inverter body 4 by welding at one end, and the outer surface of the support 1 is provided with an active heat dissipation mechanism 2, and one side of the inverter body 4 is provided with a passive heat dissipation mechanism 3.

[0039] Please refer to Figures 2-9The passive heat dissipation mechanism 3 includes a plurality of heat dissipation fins 31 which are linearly distributed on one side of the inverter body 4, and a heat collecting cover 32 is fixedly connected to the top end of the inverter body 4, the inner wall bottom end of the heat collecting cover 32 is larger than the inner wall top end, the heat collecting cover 32 is installed on the top end outside of the heat dissipation fins 31. The active heat dissipation mechanism 2 includes a frame rod 21 and a flow guide grille 211, the frame rod 21 is fixedly connected to the bottom end of the bracket 1, the inner wall bottom end of the frame rod 21 is fixedly connected with a filter screen 28, the inside of the frame rod 21 is provided with a frame rod 22, the inner wall of the frame rod 22 is rotatably connected with a plurality of shaft rods 23, the outer surface of the shaft rod 23 is fixedly connected with two pulleys 26, the top end of the shaft rod 23 is fixedly connected with a plurality of fan blades 24, the pulleys 26 outside the outer surfaces of two adjacent shaft rods 23 are sleeved with a belt 27, the bottom end of the frame rod 22 is provided with a first servo motor 25, the output end of the first servo motor 25 is fixedly connected with the bottom end of one shaft rod 23 through a shaft coupling, the outer surface of the inverter body 4 is provided with a slot 213 on both sides, the flow guide grille 211 is fixedly connected with an insertion block 212 on both sides, the inside of the flow guide grille 211 is in a honeycomb shape, the inside of the inverter body 4 is provided with a temperature sensor 210 (the temperature sensor model can be MF52A-10K type thermistor temperature sensor), when the inverter body 4 is installed, the insertion blocks 212 on both sides of the flow guide grille 211 are inserted into the two slots 213 on the back side of the inverter body 4, so that the flow guide grille 211 is located on the top end of the frame rod 21, when the inverter body 4 works, the heat generated by the internal electronic elements of the inverter body 4 is conducted to the heat dissipation fins 31 through the back plate of the inverter body 4, and the heat is conducted and dissipated through the heat dissipation fins 31, at the same time, the temperature sensor 210 inside the inverter body 4 detects the temperature inside the inverter body 4, when the temperature inside the inverter body 4 is above 40°C, the temperature sensor 210 sends a signal to the control system of the inverter body 4, the first servo motor 25 inside the frame rod 21 is controlled to work through the control system, one shaft rod 23 is driven to rotate through the first servo motor 25, when the shaft rod 23 rotates, the belt 27 is moved through the pulley 26, so that the adjacent shaft rod 23 rotates synchronously, the upward air flow is generated through the rotation of the fan blades 24 at the top end of the shaft rod 23 and passes through the flow guide grille 211, the filter screen 28 can filter the air flow sucked into the inside of the frame rod 21 when the shaft rod 23 drives the fan blades 24 to rotate, so as to block the large particles of dust in the air, the air flow generated by the rotation of the fan blades 24 is changed into vertical upward uniform air flow through the flow guide grille 211 in a honeycomb shape, enters the outer surface of the heat dissipation fins 31, accelerates the heat dissipation of the outer surface of the heat dissipation fins 31, the air flow drives the heat to continue to move upward into the inside of the heat collecting cover 32, the hot air flowing into the top of the heat dissipation fins 31 is gathered through the heat collecting cover 32, the wind speed is increased through the contraction opening at the top end of the heat collecting cover 32, so as to accelerate the hot air to move away from the outer surface of the inverter body 4, when the temperature inside the inverter body 4 reaches above 55°C, the temperature sensor 210 sends a signal to the control system again,The running power of the first servo motor 25 is increased to increase the rotating speed of the shaft rod 23 and the fan blade 24. When the temperature inside the inverter body 4 drops to below 40°C, the temperature sensor 210 sends a signal to the control system again, and the first servo motor 25 stops running, and only the heat dissipation fins 31 are used for heat dissipation.

[0040] Referring to Figures 2-9 , the top end of the heat dissipation fin 31 is smaller than the bottom end, and the bottom end of the heat dissipation fin 31 is arc-shaped. By setting the tapered heat dissipation fin 31, the overall weight is reduced while ensuring the stability of the connection between the heat dissipation fin 31 and the inverter body 4. The arc-shaped bottom edge of the heat dissipation fin 31 makes the upward airflow generated by the active heat dissipation mechanism 2 lose less air volume when it first contacts the bottom end of the heat dissipation fin 31. The top end of the inverter body 4 is fixedly connected with a guide plate 33, and the outer surface of the guide plate 33 is arc-shaped. The guide plate 33 is located at the top end of the heat collecting cover 32. By setting the arc-shaped guide plate 33, the hot air flowing out of the heat dissipation fin 31 can be guided to flow upward more smoothly, further improving the dissipation efficiency of the hot air.

[0041] Referring to Figure 2 , Figure 3 and Figure 8 , the two sides of the inverter body 4 are provided with limiting assemblies 29 which can further fasten the installation position of the flow guide grille 211 on the outer surface of the inverter body 4. The limiting assembly 29 comprises a rotating shaft 291, the outer surface of the rotating shaft 291 is fixedly connected with a clamping block 293, one end of the rotating shaft 291 is provided with a coil spring 292, the two ends of the coil spring 292 are fixedly connected with one side of the rotating shaft 291 and one side of the outer surface of the inverter body 4 respectively, and the outer surface of the plug block 212 is provided with a clamping groove 294. When the plug block 212 on both sides of the flow guide grille 211 is inserted into the insertion slot 213 on both sides of the inverter body 4, the end of the plug block 212 in contact with the end of the clamping block 293 will push the clamping block 293 on the outer surface of the rotating shaft 291 to make the clamping block 293 rotate through the rotating shaft 291 away from the insertion slot 213 and make the coil spring 292 deform. When the plug block 212 is completely inserted into the insertion slot 213, the coil spring 292 at one end of the rotating shaft 291 restores to its original state to drive the clamping block 293 to rotate towards the plug block 212 to clamp the end of the clamping block 293 into the clamping groove 294 on one side of the plug block 212, further fastening the position of the plug block 212 in the insertion slot 213 and improving the stability of the flow guide grille 211 after installation.

[0042] Referring to Figure 2 , Figure 3 and Figure 8One side of the clamping block 293 is fixedly connected with an auxiliary sheet 295, and the end of the auxiliary sheet 295 away from the clamping block 293 is provided with a convex rod. When the flow guide grille 211 is removed, the convex rod at one end of the auxiliary sheet 295 can be pinched to more conveniently pull the auxiliary sheet 295 to control the clamping block 293 to rotate away from the plug block 212 to release the position limitation of the plug block 212 inside the insertion slot 213. The two sides of the flow guide grille 211 are respectively fixedly connected with anti-skid sheets 214, and the surface of the anti-skid sheet 214 is provided with a plurality of protrusions. When the flow guide grille 211 is disassembled, the anti-skid sheets 214 on the two sides of the outer surface of the flow guide grille 211 can be held to more conveniently control the holding of the flow guide grille 211, thereby improving the convenience during disassembly;

[0043] Referring to Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 and Figure 11 , Figure 12The outer surface of the frame rod 21 is provided with a cleaning mechanism 5, which includes a timer 51 and a second servo motor 52 (the model of the timer can be IDEC FC6A-R10DT1), the timer 51 and the second servo motor 52 are installed on one end of the outer surface of the frame rod 21, the timer 51 is electrically connected with the second servo motor 52, the output end of the second servo motor 52 is provided with a lead screw 53 through a shaft coupling, both ends of the lead screw 53 rotate on one side of the outer surface of the frame rod 21, the outer surface of the frame rod 21 is slidably connected with a U-shaped rod 58, one side of the U-shaped rod 58 is fixedly connected with a threaded cylinder 510, the inner wall of the threaded cylinder 510 is threadedly connected with the outer surface of the lead screw 53, the outer surface of the U-shaped rod 58 is fixedly connected with a plurality of brush pieces 59, one end of the lead screw 53 away from the second servo motor 52 is fixedly connected with a sprocket 54, the outer surface of the sprocket 54 is rotatably connected with a chain 55, one side of the chain 55 is provided with a sliding rod 56 through a fastener, both ends of the sliding rod 56 slide on the outer surface of the inverter body 4, the outer surface of the sliding rod 56 is fixedly connected with a plurality of scraping strips 57, two scraping strips 57 are respectively located on both sides of one heat dissipation fin 31, the running time of the second servo motor 52 can be set after the installation of the inverter body 4 is completed, and the running period of the timer 51 is set to once a month, when the timer 51 is triggered, a command is sent to the second servo motor 52 through the control system to control the second servo motor 52 to operate, the lead screw 53 is driven by the second servo motor 52 to rotate clockwise, the threaded cylinder 510 at the top side of the U-shaped rod 58 moves away from the second servo motor 52 on the outer surface of the lead screw 53, the U-shaped rod 58 is driven by the threaded cylinder 510 to move, the surface of the filter screen 28 at the bottom end of the frame rod 21 is cleaned by the plurality of brush pieces 59 on the outer surface of the U-shaped rod 58, the dust attached to the surface of the filter screen 28 is swept down, and when the lead screw 53 rotates, the sprocket 54 at one end rotates, the chain 55 moves on the outer surfaces of the two sprockets 54, the sliding rod 56 on one side of the chain 55 moves with the chain 55, the two sides of the heat dissipation fin 31 are scraped and cleaned by the plurality of scraping strips 57 on the outer surface of the sliding rod 56, the dust attached to the surface of the heat dissipation fin 31 is swept down, after the U-shaped rod 58 reaches the other end of the frame rod 21, the lead screw 53 is controlled by the second servo motor 52 to rotate counterclockwise, the threaded cylinder 510 drives the U-shaped rod 58 to move to the original position, the chain 55 drives the sliding rod 56 to move to the original position, after the U-shaped rod 58 returns to the original position, the lead screw 53 is controlled by the second servo motor 52 to rotate clockwise again, and the process is repeated until the second servo motor 52 stops operating at the set stop time, the cleaning mechanism 5 is set by installing the second servo motor 52 driven by the timer 51 on the outer surface of the frame rod 21,The second servo motor 52 controls the U-shaped rod 58 and the sliding rod 56 to move at the bottom end of the frame rod 21 and one side of the heat dissipation fin 31 according to the set time period, and the brush piece 59 on the outer surface of the U-shaped rod 58 and the scraping strip 57 on the outer surface of the sliding rod 56 are used to scrape and clean the filter screen 28 at the bottom end of the frame rod 21 and the outer surface of the heat dissipation fin 31, respectively, so as to avoid the dust accumulated at the filter screen 28 at the bottom end of the frame rod 21 from affecting the air inlet efficiency of the active heat dissipation mechanism 2 during operation, and avoid the dust adhered to the outer surface of the heat dissipation fin 31 from affecting the heat conduction effect of the heat dissipation fin 31, thereby further improving the heat dissipation effect of the passive heat dissipation mechanism 3 and the active heat dissipation mechanism 2 during operation of the inverter body 4.

[0044] Referring to Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 and Figure 11 , Figure 12 , one side of the U-shaped rod 58 is slidably connected with a sliding block 511, the top end of the sliding block 511 is provided with a spring 512, the upper and lower ends of the spring 512 are fixedly connected with one side of the U-shaped rod 58 and one side of the top end of the sliding block 511, respectively, the bottom end of the sliding block 511 is fixedly connected with a plurality of knocking rods 513, and the top end of the sliding block 511 is rotatably connected with a positioning wheel 514. One side of the frame rod 21 is fixedly connected with a plurality of guide blocks 515, the outer surface of the guide block 515 is V-shaped, and the guide blocks 515 are linearly arranged on one side of the frame rod 21. During the movement of the threaded cylinder 510 and the U-shaped rod 58 on one side of the outer surface of the frame rod 21 driven by the operation of the second servo motor 52, the positioning wheel 514 at the top end of the sliding block 511 will enter the outer surface of the guide block 515 and roll along one side of the outer surface of the guide block 515 to make the sliding block 511 slide downward on one side of the outer surface of the U-shaped rod 58 to drive the knocking rod 513 to descend and stretch the spring 512. After the positioning wheel 514 enters the bottom end of the guide block 515, it will continue to move along the other side of the slope. When the slope on the outer surface of the guide block 515 is separated, the stretched spring 512 will restore to its original state to pull the sliding block 511 and the knocking rod 513 to move upward by a distance, so that the knocking rod 513 knocks the bottom end of the U-shaped rod 58, the U-shaped rod 58 vibrates to shake off the dust attached and accumulated at the top end of the brush piece 59, and the knocking rod 513 will knock the bottom end of the U-shaped rod 58 multiple times during the transverse movement of the U-shaped rod 58 to avoid dust accumulation on the outer surface of the brush piece 59 and improve the cleaning effect of the brush piece 59 on the surface of the filter screen 28 at the bottom end of the frame rod 21.

[0045] Method for use:

[0046] S1, when installing the inverter body 4, the insertion block 212 on both sides of the flow guide grid 211 is inserted into the two insertion slots 213 on the back side of the inverter body 4. When the insertion block 212 is inserted into the insertion slot 213 on both sides of the inverter body 4, one end of the insertion block 212 contacts one end of the clamping block 293, which pushes the clamping block 293 on the outer surface of the shaft 291 to rotate the clamping block 293 away from the insertion slot 213 through the shaft 291 and deform the coil spring 292. When the insertion block 212 is completely inserted into the insertion slot 213, the coil spring 292 at one end of the shaft 291 returns to its original state, which drives the clamping block 293 to rotate towards the insertion block 212 and clamps one end of the clamping block 293 into the clamping slot 294 on one side of the insertion block 212. This further secures the position of the insertion block 212 in the insertion slot 213. Adjust the timing cycle of the timer 51 in the control system of the inverter body 4, and set the running time of the second servo motor 52. Set the running period of the timer 51 to once a month.

[0047] S2, when the inverter body 4 is working, the heat generated by the internal electronic components will be conducted to the heat dissipation fins 31 through the back plate of the inverter body 4. The heat is conducted and dissipated through the heat dissipation fins 31. At the same time, the temperature sensor 210 inside the inverter body 4 detects the temperature inside the inverter body 4. When the temperature inside the inverter body 4 is above 40°C, the temperature sensor 210 sends a signal to the control system of the inverter body 4. The control system controls the operation of the first servo motor 25 inside the frame rod 21. The first servo motor 25 drives an axle 23 to rotate. When the axle 23 rotates, the belt 27 is moved by the pulley 26, which synchronously rotates the adjacent axle 23. The fan blade 24 at the top of the axle 23 rotates to generate upward air flow and passes through the flow guide grid 211. The airflow generated by the rotation of the fan blade 24 is changed into uniform vertical airflow by the honeycomb-shaped flow guide grid 211 and enters the outer surface of the heat dissipation fins 31, accelerating the heat dissipation of the heat dissipation fins 31. The airflow carries the heat upwards and into the heat collector 32. The heat collector 32 collects the hot air flowing from the top of the heat dissipation fins 31 and increases the wind speed through the constricted opening at the top of the heat collector 32, accelerating the hot air away from the outer surface of the inverter body 4. When the temperature inside the inverter body 4 reaches 55°C or above, the temperature sensor 210 sends a signal to the control system again, increasing the running power of the first servo motor 25 and increasing the rotation speed of the axle 23 and the fan blade 24. When the temperature inside the inverter body 4 drops below 40°C, the temperature sensor 210 sends a signal to the control system again, stopping the operation of the first servo motor 25 and only using the heat dissipation fins 31 for heat dissipation.

[0048] When timer 51 is triggered (S3), the control system sends a command to the second servo motor 52 to control its operation. The second servo motor 52 drives the lead screw 53 to rotate clockwise, causing the threaded cylinder 510 on one side of the top of the U-shaped rod 58 to move away from the second servo motor 52 on the outer surface of the lead screw 53. The threaded cylinder 510 drives the U-shaped rod 58 to move accordingly, and the brushes 59 on the outer surface of the U-shaped rod 58 clean the surface of the filter screen 28 at the bottom of the frame rod 21, removing the dust adhering to the surface of the filter screen 28. Simultaneously, when the lead screw 53 rotates, it drives the sprocket 54 at one end to rotate, causing the chain 55 to move on the outer surfaces of the two sprockets 54. This causes the slide bar 56 on one side of the chain 55 to move with the chain 55. Several scrapers 57 on the outer surface of the slide bar 56 scrape and clean both sides of the heat dissipation fins 31, sweeping off the dust adhering to the surface of the heat dissipation fins 31. As the U-shaped rod 58 moves on one side of the outer surface of the frame rod 21, the positioning wheel 514 at the top of the slider 511 enters the outer surface of the guide block 515 and rolls along one inclined surface of the outer surface of the guide block 515, causing the slider to... 511 slides downwards on one side of the outer surface of the U-shaped rod 58, causing the knocking rod 513 to descend and stretching the spring 512. After the positioning wheel 514 enters the bottom of the guide block 515, it will continue to move along the other inclined surface. When it leaves the inclined surface of the outer surface of the guide block 515, the stretched spring 512 returns to its original shape, pulling the slider 511 and the knocking rod 513 to move upwards quickly for a distance, causing the knocking rod 513 to strike the bottom of the U-shaped rod 58. This causes the U-shaped rod 58 to vibrate, shaking off the dust attached to and accumulated at the top of the brush plate 59. During the lateral movement of the U-shaped rod 58, the knocking rod... Rod 513 will repeatedly tap the bottom of U-shaped rod 58 to prevent dust from accumulating on the outer surface of brush plate 59. After U-shaped rod 58 reaches the other end of frame rod 21, second servo motor 52 controls lead screw 53 to rotate counterclockwise, causing threaded cylinder 510 to move U-shaped rod 58 back to its original position and chain 55 to move slide bar 56 back to its original position. After U-shaped rod 58 returns to its original position, second servo motor 52 controls lead screw 53 to rotate clockwise again, repeating this process until the stop time set by second servo motor 52, at which point second servo motor 52 stops operating.

[0049] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A kind of photovoltaic inverter room active air duct heat dissipation mechanism, including support (1), it is characterized in that: One side of the support (1) is provided with an inverter body (4), one end of the support (1) is fixed with one side of the inverter body (4) by welding, the outer surface of the support (1) is provided with an active heat dissipation mechanism (2), one side of the inverter body (4) is provided with a passive heat dissipation mechanism (3).

2. The active air duct cooling mechanism of photovoltaic inverter room according to claim 1, characterized in that: The passive heat dissipation mechanism (3) comprises a plurality of heat dissipation fins (31), which are linearly distributed on one side of the inverter body (4), and the top end of the inverter body (4) is fixedly connected with a heat collecting cover (32), the inner wall bottom of the heat collecting cover (32) is larger than the inner wall top, the heat collecting cover (32) is installed on the top outside of the heat dissipation fin (31), the active heat dissipation mechanism (2) comprises a frame rod (21) and a flow guide grille (211), the frame rod (21) is fixed on the bottom side of the support (1), the inner wall bottom of the frame rod (21) is fixedly connected with a filter screen (28), the inside of the frame rod (21) is provided with a frame rod (22), the inner wall of the frame rod (22) is rotatably connected with a plurality of shaft rods (23), the outer surface of the shaft rod (23) is fixedly connected with two pulleys (26), the top end of the shaft rod (23) is fixedly connected with a plurality of fan blades (24), the outer side of the pulley (26) on the outer surface of two adjacent shaft rods (23) is sleeved with a belt (27), the bottom end of the frame rod (22) is provided with a first servo motor (25), the output end of the first servo motor (25) is fixedly connected with the bottom end of one shaft rod (23) through a shaft coupling, the outer surface of the inverter body (4) is provided with a slot (213) on both sides, the two sides of the flow guide grille (211) are fixedly connected with an insertion block (212), the inside of the flow guide grille (211) is honeycomb-shaped, and the inside of the inverter body (4) is provided with a temperature sensor (210).

3. The active air duct cooling mechanism of photovoltaic inverter room according to claim 2, characterized in that: The top end width of the heat dissipation fin (31) is smaller than the bottom end width, and the bottom end edge of the heat dissipation fin (31) is arc-shaped.

4. The active air duct cooling mechanism of photovoltaic inverter room according to claim 2, characterized in that: The top end of the inverter body (4) is fixedly connected with a guide plate (33), the outer surface of the guide plate (33) is arc-shaped, and the guide plate (33) is located at the top end of the heat collecting cover (32).

5. The active air duct cooling mechanism of photovoltaic inverter room according to claim 2, characterized in that: The two sides of the inverter body (4) are provided with a limiting component (29) which can further fasten the installation position of the flow guide grille (211) on the outer surface of the inverter body (4).

6. The active air duct cooling mechanism of photovoltaic inverter room according to claim 5, characterized in that: The limiting component (29) comprises a rotating shaft (291), the outer surface of the rotating shaft (291) is fixedly connected with a clamping block (293), one end of the rotating shaft (291) is provided with a coil spring (292), and the two ends of the coil spring (292) are fixedly connected with one side of the rotating shaft (291) and one side of the outer surface of the inverter body (4), respectively, and the outer surface of the insertion block (212) is provided with a clamping groove (294).

7. The active air duct cooling mechanism of photovoltaic inverter room according to claim 6, characterized in that: One side of the clamping block (293) is fixedly connected with an auxiliary sheet (295), and one end of the auxiliary sheet (295) away from the clamping block (293) is provided with a convex rod.

8. The active air duct cooling mechanism of photovoltaic inverter room according to claim 2, characterized in that: The two sides of the flow guide grille (211) are respectively fixedly connected with anti-skid sheets (214), and the surface of the anti-skid sheet (214) is provided with a plurality of protrusions.

9. The active air duct cooling mechanism of photovoltaic inverter room according to claim 2, characterized in that: The outer surface of the frame rod (21) is provided with a cleaning mechanism (5), the cleaning mechanism (5) comprises a timer (51) and a second servo motor (52), the timer (51) and the second servo motor (52) are installed at one end of the outer surface of the frame rod (21), the timer (51) is electrically connected with the second servo motor (52), the output end of the second servo motor (52) is provided with a lead screw (53) through a shaft coupling, both ends of the lead screw (53) are rotatable on one side of the outer surface of the frame rod (21), the outer surface of the frame rod (21) is slidably connected with a U-shaped rod (58), one side of the U-shaped rod (58) is fixedly connected with a threaded cylinder (510), the inner wall of the threaded cylinder (510) is threadedly connected with the outer surface of the lead screw (53), the outer surface of the U-shaped rod (58) is fixedly connected with a plurality of brush pieces (59), the end of the lead screw (53) away from the second servo motor (52) is fixedly connected with a chain wheel (54), the outer surface of the chain wheel (54) is rotatably connected with the outer surface of the inverter body (4) close to the heat dissipation fin (31), the outer surfaces of the two chain wheels (54) are sleeved with a chain (55), one side of the chain (55) is provided with a sliding rod (56) through a fastener, both ends of the sliding rod (56) are slidably arranged on the outer surface of the inverter body (4), the outer surface of the sliding rod (56) is fixedly connected with a plurality of scraping strips (57), and the two scraping strips (57) are located on the two sides of a heat dissipation fin (31) respectively.

10. The active air duct cooling mechanism of photovoltaic inverter room according to claim 9, characterized in that: One side of the U-shaped rod (58) is slidably connected with a sliding block (511), the top end of the sliding block (511) is provided with a spring (512), the upper and lower ends of the spring (512) are fixedly connected with one side of the U-shaped rod (58) and one side of the top end of the sliding block (511) respectively, the bottom end of the sliding block (511) is fixedly connected with a plurality of knocking rods (513), the top end of the sliding block (511) is rotatably connected with a positioning wheel (514), one side of the frame rod (21) is fixedly connected with a plurality of guide blocks (515), the outer surface of the guide block (515) is V-shaped, and the guide blocks (515) are linearly arranged on one side of the frame rod (21).

Images