String type inverter with multiple cooling fins

Abstract

The utility model relates to the technical field of inverters, in particular to a string type inverter with a plurality of radiating fins, which comprises an inverter box body, a radiating assembly is arranged on the rear side of the inverter box body and comprises a U-shaped rear panel, a heat conducting plate is arranged on the rear side of the U-shaped rear panel in a penetrating manner, a plurality of first heat conducting fins are arranged on the front side of the heat conducting plate, and a plurality of second heat conducting fins are arranged on the rear side of the U-shaped rear panel. A plurality of second heat conduction fins are arranged on the rear side of the heat conduction plate, and a scraping plate capable of moving up and down is arranged on the rear side of the U-shaped rear panel. According to the string type inverter with the multiple cooling fins, under the cooperation effect of the multiple first heat conduction fins, the heat conduction plate and the multiple second heat conduction fins, the heat dissipation effect can be improved, natural heat dissipation is adopted, heat dissipation of the string type inverter is facilitated, the maintenance cost is reduced, and the service life of the string type inverter is prolonged. And the outer surfaces of the heat conduction plate and the second heat conduction fins are scraped through the scraping plate, dust on the outer surfaces of the heat conduction plate and the second heat conduction fins is removed, and the heat dissipation effect of the heat conduction plate and the second heat conduction fins is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to a string inverter with multiple heat sinks. Background Art

[0002] With the development of solar energy technology, solar energy is applied in more and more places and venues. The conversion of solar energy into electrical energy requires photovoltaic inverters. Among photovoltaic inverters, string inverters have a very good effect. String photovoltaic inverters are not only more powerful and intelligent, but also the power of a single machine continues to break through the upper limit. There are mainly two types of string photovoltaic inverters: natural cooling and forced air cooling.

[0003] The patent with publication number CN211183818U discloses a string inverter with both dustproof and excellent heat dissipation performance, including an inverter box, a string inverter element installed in the inverter box, a dustproof plate provided on the inner wall of the inverter box near the bottom, a U-shaped mounting plate provided at the bottom of the inner wall of the inverter box, three groups of symmetrically distributed high-speed silent fans provided at the bottom of the inner wall of the U-shaped mounting plate and near the edges on both sides, a plurality of air inlets arranged at equal intervals are provided at the bottom of the inverter box, and symmetrically distributed triangular air outlets are provided at the top of both sides of the inverter box. The string inverter with both dustproof and excellent heat dissipation performance can blow air into the inverter box to dissipate heat through a high-speed silent fan, accelerate the heat dissipation of the inverter element, and prevent dust from entering the inverter box through the dustproof plate.

[0004] In the specific use of the above-mentioned prior art, although the inverter box can be cooled by blowing air through a high-speed silent fan, the fan is easily damaged when working in a harsh outdoor environment with a lot of dust, and the dustproof plate and the filter plate are also easily blocked, resulting in a shortened service life of the fan, the dustproof plate and the filter plate. Frequent replacement and repair will bring expensive repair costs. At the same time, a damaged fan will affect the heat dissipation of the inverter. Failure to replace it in time will cause the electronic components to age faster, affecting the service life of the string inverter. In view of this, we propose a string inverter with multiple heat sinks. Utility Model Content

[0005] The purpose of the utility model is to provide a string inverter with multiple heat sinks to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A string inverter with multiple heat sinks includes an inverter box, and various components of the string inverter are arranged in the inverter box. It is a prior art and will not be described in detail here. The front side of the inverter box is connected to a front panel by bolts, the bottom of the inverter box is provided with a connection terminal, and the rear side of the inverter box is provided with a heat dissipation component, and the heat dissipation component includes a U-shaped rear panel, and the U-shaped rear panel is connected to the inverter box by bolts. A heat conducting plate is penetrated on the rear side of the U-shaped rear panel, and a plurality of heat conducting plates are arranged on the front side of the heat conducting plate. A plurality of first heat-conducting fins are arranged equidistantly on the left and right, the first heat-conducting fins are located in the inverter box, and the plurality of first heat-conducting fins increase the contact area between the heat-conducting plate and the air inside the inverter box, thereby improving the heat conduction effect; a plurality of second heat-conducting fins are arranged equidistantly on the left and right at the rear side of the heat-conducting plate, the second heat-conducting fins are located in the external environment, and the plurality of second heat-conducting fins increase the contact area between the heat-conducting plate and the air in the external environment, thereby improving the heat dissipation effect, and adopting natural heat dissipation is beneficial to the heat dissipation of the string inverter and reduces the maintenance cost;

[0008] The top of the rear side of the U-shaped rear panel and near the left and right ends are each provided with an installation top plate, the bottom of the two installation top plates are each provided with an electric telescopic rod, the movable rods of the two electric telescopic rods are each fixedly connected to an L-shaped connecting rod, the top ends of the two L-shaped connecting rods are commonly connected to a scraper, the front side of the scraper is provided with a plurality of U-shaped openings equidistantly arranged on the left and right sides, the electric telescopic rod is connected to an external power supply to work, and the two electric telescopic rods respectively drive the two L-shaped connecting rods to move synchronously, and the two L-shaped connecting rods drive the scraper to move up and down, thereby cleaning the outer surfaces of the heat conducting plate and the plurality of second heat conducting fins, removing dust on the outer surfaces of the heat conducting plate and the plurality of second heat conducting fins, and avoiding affecting the heat dissipation effect of the heat conducting plate and the plurality of second heat conducting fins.

[0009] Preferably, mounting plates are provided at the top and bottom of the inverter box and at the rear edge, and a plurality of mounting holes are provided on the front side of the mounting plates so that the mounting plates can be fixed on the bracket, thereby allowing the inverter box to be installed outdoors.

[0010] Preferably, a U-shaped protective plate is provided on the front side of the bottom of the inverter box to prevent foreign objects from hitting the connection terminals.

[0011] Preferably, when the movable rod of the electric telescopic rod is fully retracted, the scraper is located above the heat conducting plate, and the plurality of U-shaped openings are respectively located directly above the plurality of second heat conducting fins, so as to prevent the scraper from affecting the heat dissipation of the plurality of second heat conducting fins.

[0012] Preferably, when the movable rod of the electric telescopic rod is fully extended, the scraper is located below the heat conducting plate, and the multiple U-shaped openings are respectively located directly below the multiple second heat conducting fins, ensuring that the scraper can scrape off the dust on the heat conducting plate and the multiple second heat conducting fins.

[0013] Preferably, when the scraper moves downward, the outer wall of the second heat-conducting fin fits with the inner wall of the U-shaped opening, and the front side of the scraper fits with the rear side of the heat-conducting plate, thereby ensuring the cleaning effect of the scraper.

[0014] Preferably, an air circulation component is provided at the bottom of the inner wall of the inverter case, and the air circulation component includes an L-shaped fixing plate fixedly connected to the bottom of the inner wall of the inverter case, the front side of the L-shaped fixing plate is in contact with the rear side of the front panel, and a strip-shaped air inlet hole is provided at the top of the L-shaped fixing plate near the front side, and two fans are penetrated on the rear side of the L-shaped fixing plate, and the fans are located below the heat conducting plate. The two fans are connected to an external power supply to work, and under the action of the two fans, the air inside the inverter case is caused to circulate, which is beneficial for the heat conducting plate and the first plurality of heat conducting fins to exchange heat inside the inverter case, thereby improving the heat dissipation effect.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. In the string inverter with multiple heat sinks, multiple first heat-conducting fins increase the contact area between the heat-conducting plate and the air inside the inverter box, thereby improving the heat conduction effect. Multiple second heat-conducting fins increase the contact area between the heat-conducting plate and the air in the external environment, thereby improving the heat dissipation effect. Natural heat dissipation is adopted, which is beneficial to the heat dissipation of the string inverter and reduces maintenance costs.

[0017] 2. The string inverter with multiple heat sinks drives two L-shaped connecting rods to move synchronously through two electric telescopic rods, and the two L-shaped connecting rods drive the scraper to move up and down, so as to scrape the outer surfaces of the heat conducting plate and the multiple second heat conducting fins to remove dust on the outer surfaces of the heat conducting plate and the multiple second heat conducting fins, thereby avoiding affecting the heat dissipation effect of the heat conducting plate and the multiple second heat conducting fins.

[0018] 3. The string inverter with multiple heat sinks, under the action of two fans, causes the air inside the inverter box to circulate, which is beneficial for the heat conduction plate and the multiple first heat conduction fins to exchange heat inside the inverter box, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0021] Figure 3 It is a partial structural schematic diagram of the utility model;

[0022] Figure 4 This is a schematic diagram of the heat dissipation component structure in the utility model;

[0023] Figure 5 It is a partial structural schematic diagram of the heat dissipation component in the utility model;

[0024] Figure 6 It is a schematic diagram of the assembly structure of the L-shaped connecting rod and the scraper in the utility model;

[0025] Figure 7 It is a schematic diagram of the structure of the airflow circulation component in the utility model.

[0026] In the figure: 1. inverter box; 10. mounting plate; 2. front panel; 3. connecting terminal; 4. U-shaped protective plate; 5. heat dissipation assembly; 50. U-shaped rear panel; 51. heat conducting plate; 52. first heat conducting fin; 53. second heat conducting fin; 54. mounting top plate; 55. electric telescopic rod; 56. L-shaped connecting rod; 57. scraper; 570. U-shaped opening; 6. air circulation part; 60. L-shaped fixing plate; 600. strip air inlet; 61. fan. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0030] The string inverter with multiple heat sinks includes an inverter box 1, and the inverter box 1 is provided with various components of the string inverter, which are prior art and will not be described in detail here. The front side of the inverter box 1 is connected with a front panel 2 by bolts, and the bottom of the inverter box 1 is provided with a connection terminal 3. The rear side of the inverter box 1 is provided with a heat dissipation component 5, and the heat dissipation component 5 includes a U-shaped rear panel 50, and the U-shaped rear panel 50 is connected to the inverter box 1 by bolts. A heat conducting plate 51 is penetrated on the rear side of the U-shaped rear panel 50, and a plurality of heat conducting plates 51 are provided on the front side of the heat conducting plate 51 at equal distances from left to right. Arranged first heat-conducting fins 52, the first heat-conducting fins 52 are located in the inverter box 1, and the plurality of first heat-conducting fins 52 increase the contact area between the heat-conducting plate 51 and the air inside the inverter box 1, thereby improving the heat conduction effect. The rear side of the heat-conducting plate 51 is provided with a plurality of second heat-conducting fins 53 that are equidistantly arranged left and right, and the second heat-conducting fins 53 are located in the external environment. The plurality of second heat-conducting fins 53 increase the contact area between the heat-conducting plate 51 and the air in the external environment, thereby improving the heat dissipation effect. Natural heat dissipation is adopted, which is beneficial to the heat dissipation of the string inverter and reduces the maintenance cost.

[0031] A mounting top plate 54 is provided at the top of the rear side of the U-shaped rear panel 50 and near the left and right ends. An electric telescopic rod 55 is provided at the bottom of the two mounting top plates 54. The movable rods of the two electric telescopic rods 55 are fixedly connected to an L-shaped connecting rod 56. The top ends of the two L-shaped connecting rods 56 are commonly connected to a scraper 57. The front side of the scraper 57 is provided with a plurality of U-shaped openings 570 arranged equidistantly on the left and right. The electric telescopic rod 55 is connected to an external power supply to work. The two electric telescopic rods 55 drive the two L-shaped connecting rods 56 to move synchronously respectively. The two L-shaped connecting rods 56 drive the scraper 57 to move up and down, thereby cleaning the outer surfaces of the heat conducting plate 51 and the plurality of second heat conducting fins 53, removing dust on the outer surfaces of the heat conducting plate 51 and the plurality of second heat conducting fins 53, and avoiding affecting the heat dissipation effect of the heat conducting plate 51 and the plurality of second heat conducting fins 53.

[0032] In this embodiment, mounting plates 10 are provided at the top and bottom of the inverter box 1 and at the rear edge. A plurality of mounting holes are provided on the front side of the mounting plate 10 so that the mounting plate 10 can be fixed on the bracket, thereby allowing the inverter box 1 to be installed outdoors.

[0033] Specifically, a U-shaped protective plate 4 is provided on the front side of the bottom of the inverter box 1 to prevent foreign objects from hitting the connecting terminal 3 .

[0034] Furthermore, when the movable rod of the electric telescopic rod 55 is fully retracted, the scraper 57 is located above the heat conducting plate 51 , and the multiple U-shaped openings 570 are respectively located directly above the multiple second heat conducting fins 53 , so as to prevent the scraper 57 from affecting the heat dissipation of the multiple second heat conducting fins 53 .

[0035] Furthermore, when the movable rod of the electric telescopic rod 55 is fully extended, the scraper 57 is located below the heat conducting plate 51, and the multiple U-shaped openings 570 are respectively located directly below the multiple second heat conducting fins 53, ensuring that the scraper 57 can scrape off the dust on the heat conducting plate 51 and the multiple second heat conducting fins 53.

[0036] Furthermore, when the scraper 57 moves downward, the outer wall of the second heat conducting fin 53 fits with the inner wall of the U-shaped opening 570 , and the front side of the scraper 57 fits with the rear side of the heat conducting plate 51 , thereby ensuring the cleaning effect of the scraper 57 .

[0037] Furthermore, an air circulation member 6 is provided at the bottom of the inner wall of the inverter case 1, and the air circulation member 6 includes an L-shaped fixing plate 60 fixedly connected to the bottom of the inner wall of the inverter case 1, and the front side of the L-shaped fixing plate 60 is in contact with the rear side of the front panel 2, and a strip-shaped air inlet hole 600 is provided at the top of the L-shaped fixing plate 60 and close to the front side, and two fans 61 are penetrated through the rear side of the L-shaped fixing plate 60, and the fans 61 are located below the heat conducting plate 51, and the two fans 61 are connected to an external power supply to work. Under the action of the two fans 61, the air inside the inverter case 1 is caused to circulate, which is beneficial for the heat conducting plate 51 and the multiple first heat conducting fins 52 to exchange heat inside the inverter case 1, thereby improving the heat dissipation effect.

[0038] When the string inverter with multiple heat sinks of this embodiment is in use, the two fans 61 work to circulate the air inside the inverter box 1, avoiding heat dissipation dead corners, which is beneficial for the heat conducting plate 51 and the multiple first heat conducting fins 52 to exchange heat inside the inverter box 1. The heat conducting plate 51 transfers heat to the multiple second heat conducting fins 53. The multiple second heat conducting fins 53 increase the contact area between the heat conducting plate 51 and the air in the external environment, thereby improving the heat dissipation effect. The natural heat dissipation is beneficial to the heat dissipation of the string inverter and reduces the maintenance cost. The two electric telescopic rods 55 start working synchronously at regular intervals. The two electric telescopic rods 55 drive the two L-shaped connecting rods 56 to move synchronously respectively. The two L-shaped connecting rods 56 drive the scraper 57 to move up and down, thereby cleaning the outer surfaces of the heat conducting plate 51 and the multiple second heat conducting fins 53, removing dust on the outer surfaces of the heat conducting plate 51 and the multiple second heat conducting fins 53, and avoiding affecting the heat dissipation effect of the heat conducting plate 51 and the multiple second heat conducting fins 53.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A string inverter with multiple heat sinks, comprising an inverter box (1), characterized in that: The front side of the inverter case (1) is connected to a front panel (2) by bolts, the bottom of the inverter case (1) is provided with a connection terminal (3), the rear side of the inverter case (1) is provided with a heat dissipation assembly (5), the heat dissipation assembly (5) comprises a U-shaped rear panel (50), the U-shaped rear panel (50) is connected to the inverter case (1) by bolts, a heat conduction plate (51) is provided through the rear side of the U-shaped rear panel (50), a plurality of first heat conduction fins (52) arranged equidistantly from left to right are provided on the front side of the heat conduction plate (51), and the heat conduction plate (51) is provided with a plurality of first heat conduction fins (52) arranged equidistantly from left to right. A plurality of second heat-conducting fins (53) are arranged equidistantly on the left and right sides of the rear side of the U-shaped rear panel (51); a mounting top plate (54) is arranged at the top of the rear side of the U-shaped rear panel (50) and near the left and right ends; an electric telescopic rod (55) is arranged at the bottom of the two mounting top plates (54); the movable rods of the two electric telescopic rods (55) are fixedly connected to an L-shaped connecting rod (56); the top ends of the two L-shaped connecting rods (56) are commonly connected to a scraper (57); and a plurality of U-shaped openings (570) arranged equidistantly on the left and right sides are opened on the front side of the scraper (57).

2. The string inverter with multiple heat sinks according to claim 1, characterized in that: The top and bottom of the inverter box (1) and the positions located at the rear edge are both provided with mounting plates (10), and the front side of the mounting plate (10) is provided with a plurality of mounting holes.

3. The string inverter with multiple heat sinks according to claim 1, characterized in that: A U-shaped protective plate (4) is provided on the front side of the bottom of the inverter box (1).

4. The string inverter with multiple heat sinks according to claim 1, characterized in that: When the movable rod of the electric telescopic rod (55) is fully retracted, the scraper (57) is located above the heat conducting plate (51), and the plurality of U-shaped openings (570) are respectively located directly above the plurality of second heat conducting fins (53).

5. The string inverter with multiple heat sinks according to claim 1, characterized in that: When the movable rod of the electric telescopic rod (55) is fully extended, the scraper (57) is located below the heat conducting plate (51), and the plurality of U-shaped openings (570) are respectively located directly below the plurality of second heat conducting fins (53).

6. The string inverter with multiple heat sinks according to claim 1, characterized in that: When the scraper (57) moves downward, the outer wall of the second heat-conducting fin (53) fits against the inner wall of the U-shaped opening (570), and the front side of the scraper (57) fits against the rear side of the heat-conducting plate (51).

7. The string inverter with multiple heat sinks according to claim 1, characterized in that: An air circulation member (6) is provided at the bottom of the inner wall of the inverter case (1), and the air circulation member (6) comprises an L-shaped fixing plate (60) fixedly connected to the bottom of the inner wall of the inverter case (1), the front side of the L-shaped fixing plate (60) is in contact with the rear side of the front panel (2), a strip-shaped air inlet hole (600) is provided at the top of the L-shaped fixing plate (60) and close to the front side, and two fans (61) are provided through the rear side of the L-shaped fixing plate (60), and the fans (61) are located below the heat conducting plate (51).

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