Grid-connected inverter with good heat dissipation effect

Abstract

The utility model is applicable to the technical field of grid-connected inverters, and provides a grid-connected inverter with a good heat dissipation effect, which comprises a grid-connected inverter main body, and an air inlet pipe and an air exhaust pipe for ventilation and heat dissipation are fixedly connected on a shell of the grid-connected inverter main body; the rotating shaft is rotationally mounted in the air inlet pipe; the fan blades are fixedly mounted at one end of the rotating shaft; and the first transmission rod is rotationally installed on the air inlet pipe, and the bottom end of the first transmission rod extends into the air inlet pipe. According to the grid-connected inverter with the good heat dissipation effect, through the arrangement of the air inlet pipe, the exhaust pipe, the fan blades and the transmission mechanism, an efficient ventilation and heat dissipation system is formed, cold air enters from the air inlet pipe, is subjected to heat exchange in the inverter through the acceleration effect of the fan blades and then is exhausted through the exhaust pipe, convection is formed, heat dissipation is accelerated, and the heat dissipation efficiency is improved. And the internal temperature of the inverter is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of grid-connected inverters, and in particular relates to a grid-connected inverter with good heat dissipation effect. Background Art

[0002] When the DC power generated by solar panels or small wind turbines is connected to the grid for use, it needs to be connected through a grid-connected inverter to convert the DC output into AC power and synchronize its own frequency with the frequency of the grid.

[0003] At present, during the operation of photovoltaic systems, the active components inside the inverter (such as switching tubes, magnetic core components, inductors, etc.) will generate a large amount of heat when current passes through. If this heat cannot be dissipated in time, it will cause the internal temperature of the inverter to rise, thereby affecting the performance and life of the components, and even causing failures. Therefore, it is particularly important to design a grid-connected inverter with excellent heat dissipation effect. Utility Model Content

[0004] The utility model provides a grid-connected inverter with good heat dissipation effect, aiming to solve the problem of poor heat dissipation of current grid-connected inverters.

[0005] The utility model is achieved as follows: a grid-connected inverter with good heat dissipation effect includes: a grid-connected inverter body, an air inlet duct and an exhaust duct for ventilation and heat dissipation fixedly connected to the housing of the grid-connected inverter body; a rotating shaft, the rotating shaft being rotatably mounted in the air inlet duct; a fan blade, the fan blade being fixedly mounted on one end of the rotating shaft; a first transmission rod, the first transmission rod being rotatably mounted on the air inlet duct, the bottom end of the first transmission rod extending into the air inlet duct; a first bevel gear for transmission, the first bevel gear being fixedly mounted on the bottom end of the first transmission rod; a second bevel gear, the second bevel gear being fixedly mounted on the other end of the rotating shaft, the second bevel gear being meshed with the first bevel gear; a mounting shell, the mounting shell being fixedly mounted on the air inlet duct, a motor being fixedly mounted in the mounting shell, the output shaft of the motor being fixedly connected to the top end of the first transmission rod via a coupling; a filter plate, the filter plate being disposed on the air inlet end of the air inlet duct, the filter plate being used to filter impurities; and a cleaning mechanism for cleaning the filter plate, the cleaning mechanism being disposed on the mounting shell.

[0006] Preferably, the cleaning mechanism includes: a shaft rotatably installed in the mounting shell; a brush plate assembled on the bottom end of the shaft, the brush plate being used to clean the filter plate; a second transmission rod rotatably installed in the mounting shell; a third bevel gear fixedly installed on the shaft and the first transmission rod respectively; and fourth bevel gears fixedly installed on both ends of the shaft respectively, and the two fourth bevel gears are respectively engaged with the corresponding third bevel gears.

[0007] Preferably, a removable filter plate is provided in the air inlet duct, and a plurality of partition plates are fixedly mounted on the inner wall of the shell of the grid-connected inverter body.

[0008] Preferably, a detachable insect-proof screen is provided on the air outlet end of the exhaust pipe, and magnet blocks are embedded on both the insect-proof screen and the exhaust pipe, and the corresponding magnet blocks attract each other.

[0009] Preferably, an inspection port is provided on the mounting shell, a detachable baffle is provided in the inspection port, a plurality of screws are symmetrically provided on the baffle, and the screws are threadedly connected to the mounting shell.

[0010] Preferably, a limiting groove is provided at the air inlet end of the air inlet pipe, a limiting block is fixedly installed at the bottom of the filter plate, and the bottom end of the limiting block extends into the limiting groove.

[0011] Preferably, a groove block for connecting the shaft is provided on the top of the brush plate, and a bolt for limiting is provided on the groove block, and one end of the bolt is threadedly passed through the shaft.

[0012] Compared with the related art, the grid-connected inverter provided by the present invention has the following advantages:

[0013] Beneficial effects:

[0014] The inlet duct, exhaust duct, fan blades, and transmission mechanism form an efficient ventilation and heat dissipation system. Cold air enters through the inlet duct, is accelerated by the fan blades, undergoes heat exchange inside the inverter, and is discharged through the exhaust duct, forming convection, which accelerates heat dissipation, effectively reducing the internal temperature of the inverter, protecting components, and extending the life of the equipment. The filter plate effectively filters impurities entering the inverter, reducing the impact of dust and foreign matter on internal components. At the same time, the automatic rotation design of the cleaning mechanism can automatically clean dust on the filter plate without manual intervention, greatly reducing the workload of cleaning and maintenance. The removable filter plate installed in the air inlet duct allows users to easily replace or clean the filter plate to maintain its good filtering effect. Similarly, the removable insect screen on the air outlet of the exhaust duct is also easily installed and removed by magnets, making it convenient for users to clean or replace. The insect screen effectively prevents small organisms such as insects from entering the inverter through the exhaust duct, protecting internal components from damage and reducing malfunctions caused by insects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a grid-connected inverter with good heat dissipation effect provided by the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A shown in FIG;

[0018] Figure 4 It is a structural schematic diagram of the filter plate in this utility model.

[0019] Figure numerals: 1. grid-connected inverter body; 2. air inlet pipe; 3. exhaust pipe; 4. rotating shaft; 5. fan blade; 6. first transmission rod; 7. first bevel gear; 8. second bevel gear; 9. mounting shell; 10. motor; 11. filter plate; 12. shaft; 13. brush plate; 14. second transmission rod; 15. third bevel gear; 16. fourth bevel gear; 17. filter plate; 18. partition plate; 19. insect screen. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides a grid-connected inverter with good heat dissipation effect. Figure 1-4As shown, the grid-connected inverter with good heat dissipation effect includes: a grid-connected inverter body 1, the housing of the grid-connected inverter body 1 is fixedly connected to an air inlet pipe 2 and an exhaust pipe 3 for ventilation and heat dissipation; a rotating shaft 4, the rotating shaft 4 is rotatably mounted in the air inlet pipe 2; a fan blade 5, the fan blade 5 is fixedly mounted on one end of the rotating shaft 4; a first transmission rod 6, the first transmission rod 6 is rotatably mounted on the air inlet pipe 2, and the bottom end of the first transmission rod 6 extends into the air inlet pipe 2; a first bevel gear 7 for transmission, the first bevel gear 7 is fixedly mounted on the bottom end of the first transmission rod 6; a second bevel gear 7 is fixedly mounted on the bottom end of the first transmission rod 6; Gear 8, the second bevel gear 8 is fixedly mounted on the other end of the rotating shaft 4, and the second bevel gear 8 is meshed with the first bevel gear 7; a mounting shell 9, the mounting shell 9 is fixedly mounted on the air inlet pipe 2, a motor 10 is fixedly mounted in the mounting shell 9, and the output shaft of the motor 10 is fixedly connected to the top end of the first transmission rod 6 through a coupling; a filter plate 11, the filter plate 11 is arranged on the air inlet end of the air inlet pipe 2, and the filter plate 11 is used to filter impurities; a cleaning mechanism for cleaning the filter plate 11, the cleaning mechanism is arranged on the mounting shell 9.

[0023] In this embodiment, when designing a grid-connected inverter with excellent heat dissipation effect, by adopting a specific ventilation and heat dissipation structure, the heat dissipation efficiency can be effectively improved, the active components inside the inverter can be protected, and the life of the equipment can be extended; the grid-connected inverter main body 1 is the core of the entire system, responsible for converting the direct current generated by the photovoltaic system into alternating current so that it can be incorporated into the power grid. The shell of the main body 1 is designed with an air inlet pipe 2 and an exhaust pipe 3 to form an air circulation path and realize rapid dissipation of internal heat; the air inlet pipe 2 is fixedly connected to the shell as an inlet of cold air, and can effectively guide the air flow through the internal fan blades 5 and transmission mechanism; the exhaust pipe 3 is used to discharge the hot air after the heat exchange inside the inverter, forming convection with the air inlet pipe 2 to accelerate heat dissipation; the rotating shaft 4 is installed in the air inlet pipe 2, and the fan blades 5 are fixed on it. Driven by the motor 10, the fan blades 5 rotate to generate airflow, enhance air flow, and improve heat dissipation efficiency; the first transmission rod 6, the first bevel gear 7 and the second bevel gear 8: It constitutes a transmission mechanism, the first transmission rod 6 is connected to the output shaft of the motor 10, and the rotational motion of the motor 10 is transmitted to the rotating shaft 4 through the engagement of the first bevel gear 7 and the second bevel gear 8, driving the fan blades 5 to rotate; the mounting shell 9 is fixed on the air inlet pipe 2, and the motor 10 is installed inside to provide power for the fan blades 5 to ensure the continuity of air flow; the filter plate 11 is arranged at the air inlet end of the air inlet pipe 2, and the inclined angle design can effectively filter the incoming impurities, prevent dust and foreign matter from entering the interior of the inverter, and reduce maintenance requirements; the cleaning mechanism is arranged on the mounting shell 9, which is used to regularly or automatically clean the dust accumulated on the filter plate 11 to ensure smooth air circulation and maintain the heat dissipation effect. Through the active ventilation system, the heat dissipation inside the inverter can be effectively accelerated, the operating temperature can be reduced, and the performance and life of the components can be improved. The design of the filter plate 11 and the cleaning mechanism reduces the impact of dust and foreign matter on the interior of the inverter, reduces the frequency of regular cleaning and maintenance, and saves maintenance costs.

[0024] In a further preferred embodiment of the present utility model, the cleaning mechanism includes: a shaft 12 rotatably mounted in the mounting shell 9; a brush plate 13 assembled on the bottom end of the shaft 12, the brush plate 13 being used to clean the filter plate 11; a second transmission rod 14 rotatably mounted in the mounting shell 9; a third bevel gear 15 respectively fixedly mounted on the shaft 12 and on the first transmission rod 6; and fourth bevel gears 16 respectively fixedly mounted on both ends of the shaft 12, and the two fourth bevel gears 16 are respectively engaged with the corresponding third bevel gears 15.

[0025] In this embodiment, the design of the cleaning mechanism further optimizes the maintenance efficiency and heat dissipation performance of the grid-connected inverter. The cleaning mechanism includes the following components: a shaft 12 is rotatably mounted in the mounting shell 9, serving as a support shaft for the brush plate 13 and the bevel gear; the brush plate 13 is assembled at the bottom end of the shaft 12 and contacts the filter plate 11, and is used to clean dust and impurities on the filter plate 11 to ensure unobstructed air circulation; a second transmission rod 14 is rotatably mounted in the mounting shell 9, and is connected to the main transmission system through a bevel gear for transmitting power; a third bevel gear 15 is fixedly mounted on the shaft 12 and the first transmission rod 6, respectively, and is connected to the third bevel gear 15 through the third bevel gear 15. The engagement of the four bevel gears 16 transmits power from the main transmission system to the shaft 12, driving the brush plate 13 to rotate. The fourth bevel gear 16 is fixedly mounted on both ends of the shaft 12 and meshes with the corresponding third bevel gear 15 to ensure uniform power transmission, so that the brush plate 13 rotates smoothly and effectively cleans the filter plate 11. The automatic rotation design of the brush plate 13 can automatically clean the dust on the filter plate 11 without manual intervention, reducing maintenance workload. By keeping the filter plate 11 clean, smooth air flow is ensured, the heat dissipation efficiency of the inverter is improved, the internal temperature is reduced, and the equipment life is extended.

[0026] In a further preferred embodiment of the present invention, a removable filter plate 17 is provided in the air inlet pipe 2 , and a plurality of partition plates 18 are fixedly mounted on the inner wall of the housing of the grid-connected inverter body 1 .

[0027] In this embodiment, a removable filter plate 17 is provided in the air inlet pipe 2, so that the user can easily replace or clean the filter plate according to actual conditions to maintain its good filtering effect. When the dust or impurities on the filter plate 17 accumulate to a certain extent, the user can simply pull the filter plate out of the air inlet pipe 2, clean it or replace it with a new filter plate, and then insert it back into place. Several partition plates 18 are fixedly installed on the inner wall of the shell of the grid-connected inverter body 1, which are used to divide the internal space of the inverter into multiple air ducts, which is conducive to exhaust and heat dissipation.

[0028] In a further preferred embodiment of the present invention, a detachable insect-proof screen 19 is provided on the air outlet end of the exhaust pipe 3, and magnet blocks are embedded in the insect-proof screen 19 and the exhaust pipe 3, and the corresponding magnet blocks attract each other.

[0029] In this embodiment, the user can place a removable insect screen 19 in an appropriate position on the outlet end of the exhaust duct 3. Because both the insect screen 19 and the exhaust duct 3 are embedded with magnets, and these magnets attract each other, the insect screen 19 remains firmly attached to the exhaust duct 3, eliminating the need for additional fixing devices. When dust, insects, or other impurities accumulate on the insect screen 19, the user can simply remove the insect screen from the exhaust duct 3 by overcoming the attraction of the magnets for cleaning or replacement. After cleaning, the insect screen is returned to its original position, where the magnets automatically secure it. The installation of the insect screen 19 effectively prevents insects and other small organisms from entering the inverter through the exhaust duct 3, protecting the inverter's internal components from damage and reducing malfunctions caused by insects.

[0030] In a further preferred embodiment of the present invention, an inspection port is provided on the mounting shell 9 , a detachable baffle is provided in the inspection port, a plurality of screws are symmetrically provided on the baffle, and the screws are threadedly connected to the mounting shell 9 .

[0031] In this embodiment, an inspection port is provided above the mounting shell 9 to facilitate inspection and maintenance of the interior of the inverter. When inspection is required, the user can find the inspection port and operate the detachable baffle for inspection.

[0032] In a further preferred embodiment of the present invention, a limiting groove is provided at the air inlet end of the air inlet pipe 2, a limiting block is fixedly installed at the bottom of the filter plate 11, and the bottom end of the limiting block extends into the limiting groove.

[0033] In this embodiment, one or more limit grooves are designed at the air inlet end of the air inlet pipe 2. The shape and size of these limit grooves match the limit blocks at the bottom of the filter plate 11. The limit blocks are inserted into the limit grooves to limit the filter plate 11, thereby improving its stability.

[0034] In a further preferred embodiment of the present invention, a groove block for connecting the shaft 12 is provided on the top of the brush plate 13 , and a bolt for limiting is provided on the groove block, and one end of the bolt is threaded through the shaft 12 .

[0035] In this embodiment, a groove block is designed on the top of the brush plate 13, and the shape and size of the groove block match the corresponding part of the shaft rod 12. The limiting bolts set on the groove block are used to further fix the connection between the shaft rod and the groove block, thereby achieving a tight connection.

[0036] In summary, by setting the air inlet pipe 2, the exhaust pipe 3, the fan blades 5 and the transmission mechanism, an efficient ventilation and heat dissipation system is formed. The cold air enters from the air inlet pipe 2, is accelerated by the fan blades 5, undergoes heat exchange inside the inverter, and is discharged from the exhaust pipe 3, forming convection, which accelerates the heat loss, effectively reduces the internal temperature of the inverter, protects the components, and extends the life of the equipment; the setting of the filter plate 11 effectively filters the impurities entering the inverter, reduces the impact of dust and foreign matter on the internal components, and at the same time, the automatic rotation design of the cleaning mechanism can automatically clean the filter The dust on the plate 11 does not require manual intervention, which greatly reduces the workload of cleaning and maintenance. The removable filter plate 17 arranged in the air inlet duct 2 allows the user to easily replace or clean the filter plate to maintain its good filtering effect. Similarly, the detachable insect-proof screen plate 19 on the air outlet end of the exhaust duct 3 is also conveniently installed and disassembled through the magnet block, which is convenient for the user to clean or replace. The setting of the insect-proof screen plate 19 effectively prevents small creatures such as insects from entering the inverter through the exhaust duct 3, protects internal components from damage, and reduces failures caused by insects.

[0037] It is worth noting that the circuits, electronic components and modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0038] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A grid-connected inverter with good heat dissipation effect, characterized in that: include: A grid-connected inverter body, wherein an air inlet pipe and an air exhaust pipe for ventilation and heat dissipation are fixedly connected to the housing of the grid-connected inverter body; a rotating shaft, the rotating shaft being rotatably mounted in the air inlet duct; a fan blade, the fan blade being fixedly mounted on one end of the rotating shaft; a first transmission rod, the first transmission rod being rotatably mounted on the air inlet pipe, the bottom end of the first transmission rod extending into the air inlet pipe; a first bevel gear for transmission, wherein the first bevel gear is fixedly mounted on the bottom end of the first transmission rod; a second bevel gear, the second bevel gear being fixedly mounted on the other end of the rotating shaft and meshing with the first bevel gear; a mounting shell, the mounting shell being fixedly mounted on the air inlet pipe, a motor being fixedly mounted in the mounting shell, and an output shaft of the motor being fixedly connected to a top end of the first transmission rod via a coupling; A filter plate, the filter plate being arranged on the air inlet end of the air inlet pipe and being used for filtering impurities; A cleaning mechanism for cleaning the filter plate is provided on the mounting shell.

2. The grid-connected inverter with good heat dissipation effect according to claim 1, characterized in that: The cleaning mechanism comprises: Rotating a shaft mounted in the mounting housing; A brush plate mounted on the bottom end of the shaft, the brush plate being used to clean the filter plate; Rotating a second transmission rod installed in the mounting housing; a third bevel gear fixedly mounted on the shaft and the first transmission rod respectively; The fourth bevel gears are respectively fixedly mounted on both ends of the shaft, and the two fourth bevel gears are respectively engaged with the corresponding third bevel gears.

3. The grid-connected inverter with good heat dissipation effect according to claim 1, characterized in that: A pull-out and detachable filter plate is provided in the air inlet pipe, and a plurality of partition plates are fixedly mounted on the inner wall of the shell of the grid-connected inverter body.

4. The grid-connected inverter with good heat dissipation effect according to claim 1, characterized in that: A detachable insect-proof screen is provided on the air outlet end of the exhaust pipe. Both the insect-proof screen and the exhaust pipe are inlaid with magnet blocks, and the corresponding magnet blocks attract each other.

5. The grid-connected inverter with good heat dissipation effect according to claim 1, characterized in that: An inspection port is provided on the mounting shell, a detachable baffle is provided in the inspection port, a plurality of screws are symmetrically provided on the baffle, and the screws are threadedly connected to the mounting shell.

6. The grid-connected inverter with good heat dissipation effect according to claim 1, characterized in that: The air inlet end of the air inlet pipe is provided with a limiting groove, the bottom of the filter plate is fixedly installed with a limiting block, and the bottom end of the limiting block extends into the limiting groove.

7. The grid-connected inverter with good heat dissipation effect according to claim 2, characterized in that: A groove block for connecting the shaft is provided on the top of the brush plate, and a bolt for limiting is provided on the groove block, and one end of the bolt is threadedly passed through the shaft.

Images