Aluminum alloy heat dissipation structure of photovoltaic inverter

Abstract

The utility model discloses an aluminium alloy heat dissipation structure of photovoltaic inverter, and this structure aims at solving the problem of the dust gathering on the surface of the heat dissipation fin of the existing photovoltaic inverter after long time use, and the time and effort of cleaning process. The structure includes the shell, the lower surface fixedly connected with the aluminium alloy heat dissipation main part of shell, the lower surface fixedly connected with a plurality of heat dissipation fins of aluminium alloy heat dissipation main part, the left and right sides of shell are fixedly connected with first fixed plate and second fixed plate, and the bottom end between first fixed plate and second fixed plate is slidably connected with the movable rod. The utility model drives the positioning plate and rubber pad to contract into the recess by rotating the handle, then moves the movable rod back and forth to drive the cleaning shaft and bristle to move back and forth along the long hole, and the dust on the surface of the adjacent heat dissipation fin is cleaned, thereby avoiding the dust from affecting the normal heat dissipation of the aluminium alloy heat dissipation main part, the cleaning process is simpler, and the normal use of the photovoltaic inverter is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic inverter technology, specifically relating to an aluminum alloy heat dissipation structure for photovoltaic inverters. Background Technology

[0002] As the core equipment of a photovoltaic power generation system, the photovoltaic inverter converts the direct current (DC) generated by solar panels into alternating current (AC) for power grid supply or user consumption. During inverter operation, a significant amount of heat is generated due to the switching actions of power devices and energy losses in the circuitry. If this heat cannot be dissipated effectively and promptly, the internal temperature of the inverter will rise. Studies have shown that when the internal temperature of the inverter exceeds its rated operating temperature, the performance of the power devices degrades, the reliability of the circuitry is affected, thereby reducing the inverter's conversion efficiency and shortening its lifespan.

[0003] Existing photovoltaic inverters mainly use heat sinks installed at the bottom for heat dissipation. However, there is a lot of dust in the environment, and after long-term use, a lot of dust will accumulate on the surface of the heat sink fins, which will reduce the heat dissipation efficiency of the heat sink. Therefore, staff need to clean the dust regularly. However, due to the small gap between the heat sink fins, special tools are required to complete the cleaning, which is time-consuming and labor-intensive. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an aluminum alloy heat dissipation structure for photovoltaic inverters. This structure aims to solve the problem that existing photovoltaic inverters mainly use heat sinks installed at the bottom for heat dissipation, and after long-term use, a large amount of dust will accumulate on the surface of the heat sink fins, making the cleaning process time-consuming and laborious.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an aluminum alloy heat dissipation structure for a photovoltaic inverter. The structure includes an outer shell, an aluminum alloy heat dissipation body fixedly connected to the lower surface of the outer shell, and multiple heat dissipation fins fixedly connected to the lower surface of the aluminum alloy heat dissipation body. A first fixing plate and a second fixing plate are fixedly connected to the left and right sides of the outer shell, respectively. A movable rod is slidably connected to the bottom end between the first fixing plate and the second fixing plate. Multiple cleaning shafts are installed on the upper surface of the movable rod. The cleaning shafts are located between two adjacent heat dissipation fins, and brush bristles are fixedly connected to the outer surface of the cleaning shafts.

[0008] Preferably, both the first and second fixed plates have elongated holes, the movable rod has a rectangular cross-section, and the left and right ends of the movable rod are slidably connected inside the elongated holes, with positioning components installed at both ends.

[0009] Furthermore, the positioning component includes fixed blocks that are fixedly connected to the left and right sides of the movable rod. A groove is provided on the side of the fixed block closer to the movable rod. A lead screw is threaded onto the fixed block. One end of the lead screw is located inside the groove and is fixedly connected to a positioning plate. A handle is fixedly connected to the other end of the lead screw. A rubber pad is fixedly connected to the end of the positioning plate away from the lead screw.

[0010] Furthermore, mounting holes are provided on the lower surface of the outer casing. The aluminum alloy heat sink body is fixedly connected to the lower surface of the outer casing by screws. Multiple heat dissipation holes are provided on the aluminum alloy heat sink body. The heat dissipation holes penetrate the front and rear sides of the aluminum alloy heat sink body and multiple first heat dissipation protrusions are fixedly connected to the inner wall. The first heat dissipation protrusions have an arc-shaped structure and multiple first heat dissipation protrusions are evenly distributed along the inner wall of the heat dissipation holes.

[0011] Furthermore, an air inlet is provided on the left side of the outer casing, and an air outlet is provided on the right side of the outer casing. A fan is fixedly connected to the air outlet, and the bottom end of the fan extends to the heat dissipation hole. A cooling fan is fixedly connected inside the fan.

[0012] Furthermore, multiple second heat dissipation protrusions are fixedly connected to both sides of the heat dissipation fins. The second heat dissipation protrusions have an arc-shaped structure and are evenly distributed along the heat dissipation fins.

[0013] Furthermore, a wire hole is provided on the left side of the outer casing, and a protective sleeve is installed on the inner wall of the wire hole.

[0014] Beneficial effects

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

[0016] This invention features an aluminum alloy heat sink mounted at the bottom of the casing, with multiple heat dissipation holes and fins on the heat sink. The heat dissipation holes not only reduce the overall weight, but the first and second heat dissipation protrusions on the holes and fins form a corrugated heat dissipation surface, increasing the contact area with air and allowing internal components to dissipate heat to the outside more quickly, thus improving the heat dissipation effect of the photovoltaic inverter.

[0017] This invention features a movable rod and a cleaning shaft installed at the bottom of the housing. The brush on the cleaning shaft extends between adjacent heat dissipation fins. When cleaning the heat dissipation fins of the aluminum alloy heat dissipation body is required, rotating the handle causes the positioning plate and rubber pad to retract into the groove. Then, moving the movable rod back and forth causes the cleaning shaft and brush to move back and forth along the elongated hole. During the back and forth movement, the brush can clean the dust on the surface of the adjacent heat dissipation fins, thereby preventing dust from affecting the normal heat dissipation of the aluminum alloy heat dissipation body. The cleaning process is simpler, ensuring the normal operation of the photovoltaic inverter. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below.

[0020] Figure 3 This is a front view cross-sectional structural diagram of this utility model.

[0021] Figure 4 This is the utility model Figure 3 A magnified structural diagram of point A in the middle.

[0022] Figure 5 This is a schematic diagram of the left-side cross-sectional structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the movable rod of this utility model.

[0024] Figure 7 This is a schematic diagram of the aluminum alloy heat dissipation body of this utility model.

[0025] The markings in the attached diagram are as follows: 1. Outer shell; 2. Aluminum alloy heat sink body; 3. Heat sink fins; 4. First fixing plate; 5. Second fixing plate; 6. Movable rod; 7. Cleaning shaft; 8. Brush bristles; 9. Elongated hole; 10. Positioning component; 11. Wiring hole; 101. Mounting hole; 102. Air inlet; 103. Air outlet; 104. Air duct; 105. Heat sink fan; 201. Heat dissipation hole; 202. First heat dissipation protrusion; 301. Second heat dissipation protrusion; 1001. Fixing block; 1002. Groove; 1003. Lead screw; 1004. Positioning plate; 1005. Handle; 1006. Rubber pad. Detailed Implementation

[0026] This specific embodiment is an aluminum alloy heat dissipation structure for a photovoltaic inverter, and its structural schematic diagram is shown below. Figures 1-7 As shown, the structure includes an outer shell 1. An aluminum alloy heat sink 2 is fixedly connected to the lower surface of the outer shell 1. The aluminum alloy heat sink 2 is made of 6063 aluminum alloy. Multiple heat sink fins 3 are fixedly connected to the lower surface of the aluminum alloy heat sink 2. The heat sink fins 3 can increase the contact area with the air and enable the internal components to dissipate heat to the outside more quickly. A first fixing plate 4 and a second fixing plate 5 are fixedly connected to the left and right sides of the outer shell 1, respectively. A movable rod 6 is slidably connected to the bottom end between the first fixing plate 4 and the second fixing plate 5. Multiple cleaning shafts 7 are installed on the upper surface of the movable rod 6. The cleaning shafts 7 are located between two adjacent heat sink fins 3. Brush bristles 8 are fixedly connected to the outer surface of the cleaning shafts 7.

[0027] like Figure 3-7As shown: In this embodiment, both the first fixing plate 4 and the second fixing plate 5 have elongated holes 9. The cross-section of the movable rod 6 is rectangular. The left and right ends of the movable rod 6 are slidably connected inside the elongated holes 9, and positioning components 10 are installed at both ends. The positioning components 10 include fixing blocks 1001 fixedly connected to the left and right sides of the movable rod 6. The fixing block 1001 has a groove 1002 on the side near the movable rod 6. A lead screw 1003 is threaded onto the fixing block 1001. One end of the lead screw 1003 is located inside the groove 1002 and is fixedly connected to a positioning plate 1004. The other end of the lead screw 1003 is fixedly connected to a handle 1005. A rubber pad 1006 is fixedly connected to the end of the positioning plate 1004 away from the lead screw 1003.

[0028] By rotating the handle 1005, the lead screw 1003 is driven to rotate. During the rotation, the lead screw 1003 can drive the positioning plate 1004 and the rubber pad 1006 to retract into the groove 1002. Then, the movable rod 6 moves back and forth, driving the cleaning shaft 7 and the brush 8 to move back and forth along the elongated hole 9. During the back and forth movement, the brush 8 can clean the dust on the surface of the adjacent heat sink fins 3, thereby preventing the dust from affecting the normal heat dissipation of the aluminum alloy heat sink body 2. The cleaning process is simpler, ensuring the normal use of the photovoltaic inverter.

[0029] like Figure 1 , Figure 3 and Figure 5 As shown: In this embodiment, the lower surface of the outer casing 1 is provided with mounting holes 101. The aluminum alloy heat sink 2 is fixedly connected to the lower surface of the outer casing 1 by screws. The aluminum alloy heat sink 2 is provided with multiple heat dissipation holes 201. The heat dissipation holes 201 penetrate through the front and rear sides of the aluminum alloy heat sink 2 and multiple first heat dissipation protrusions 202 are fixedly connected to the inner wall. The first heat dissipation protrusions 202 are arc-shaped structures, and the multiple first heat dissipation protrusions 202 are evenly distributed along the inner wall of the heat dissipation holes 201. In this way, the electrical components of the photovoltaic inverter can be installed on the aluminum alloy heat sink 2. At the same time, the first heat dissipation protrusions 202 of the heat dissipation holes 201 form a corrugated heat dissipation surface, which can increase the contact area with air and make the internal components dissipate heat to the outside more quickly.

[0030] like Figure 2 and Figure 5 As shown: In this embodiment, an air inlet 102 is provided on the left side of the outer casing 1, and an air outlet 103 is provided on the right side of the outer casing 1. A fan 104 is fixedly connected to the air outlet 103. The bottom end of the fan 104 extends to the heat dissipation hole 201. A cooling fan 105 is fixedly connected inside the fan 104. By setting up the fan 104 and the cooling fan 105, the air inside the outer casing 1 can circulate and dissipate heat. Furthermore, the bottom end of the fan 104 extends to the heat dissipation hole 201, which can quickly dissipate heat from the internal space of the heat dissipation hole 201 in the aluminum alloy heat dissipation body 2, and better expel heat.

[0031] like Figure 2 and Figure 7 As shown: In this embodiment, multiple second heat dissipation protrusions 301 are fixedly connected to both the left and right sides of the heat dissipation fin 3. The second heat dissipation protrusions 301 have an arc-shaped structure and are evenly distributed along the heat dissipation fin 3. The second heat dissipation protrusions 301 on the heat dissipation fin 3 form a corrugated heat dissipation surface, which can increase the contact area with air and make the internal components dissipate heat to the outside more quickly.

[0032] like Figure 1 and Figure 2 As shown: In this embodiment, a wire hole 11 is provided on the left side of the outer casing 1, and a protective sleeve is installed on the inner wall of the wire hole 11; the wire hole 11 facilitates the wiring of internal components, and the protective sleeve protects the wires and prevents damage.

[0033] Working principle: By setting up the air duct 104 and the cooling fan 105, the air inside the outer casing 1 can circulate and dissipate heat. The bottom end of the air duct 104 extends to the heat dissipation hole 201, which quickly dissipates heat from the internal space of the heat dissipation hole 201 in the aluminum alloy heat dissipation body 2, thus better dissipating heat. By installing the movable rod 6 and the cleaning shaft 7 at the bottom of the outer casing 1, the bristles 8 on the cleaning shaft 7 extend between adjacent heat dissipation fins 3. When it is necessary to clean the heat dissipation fins 3 of the aluminum alloy heat dissipation body 2, the handle 1005 is turned to drive the lead screw 1003 to rotate. Since the lead screw 1003 is threadedly connected to the fixed block 1001, the lead screw 1003 can drive the positioning plate 1004 and the rubber pad 1006 to retract into the groove 1002 during the rotation. Then, the movable rod 6 is moved back and forth to drive the cleaning shaft 7 and the bristles 8 to move back and forth along the elongated hole 9. During the back and forth movement, the bristles 8 can clean the adjacent heat dissipation fins 3. The surface dust is cleaned to prevent it from affecting the normal heat dissipation of the aluminum alloy heat sink 2. The cleaning process is simpler, ensuring the normal operation of the photovoltaic inverter. Then, the handle 1005 is reversed to drive the lead screw 1003 to rotate. During the rotation, the lead screw 1003 can drive the positioning plate 1004 and the rubber pad 1006 to move outward and press and fix them with the first fixed plate 4 and the second fixed plate, thereby preventing the movable rod 6 from moving. By installing the aluminum alloy heat sink 2 at the bottom of the outer casing 1 and setting multiple heat dissipation holes 201 and heat dissipation fins 3 on the aluminum alloy heat sink 2, the heat dissipation holes 201 not only reduce the overall weight, but also the first heat dissipation protrusion 202 and the second heat dissipation protrusion 301 on the heat dissipation holes 201 and the heat dissipation fins 3 form a corrugated heat dissipation surface, which can increase the contact area with the air and make the internal components dissipate heat to the outside more quickly, thus improving the heat dissipation effect of the photovoltaic power generation inverter.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An aluminum alloy heat dissipation structure for a photovoltaic inverter, the structure comprising a housing (1), characterized in that: An aluminum alloy heat dissipation body (2) is fixedly connected to the lower surface of the outer shell (1). Multiple heat dissipation fins (3) are fixedly connected to the lower surface of the aluminum alloy heat dissipation body (2). A first fixing plate (4) and a second fixing plate (5) are fixedly connected to the left and right sides of the outer shell (1). A movable rod (6) is slidably connected to the bottom end between the first fixing plate (4) and the second fixing plate (5). Multiple cleaning shafts (7) are installed on the upper surface of the movable rod (6). The cleaning shafts (7) are located between two adjacent heat dissipation fins (3). Brush bristles (8) are fixedly connected to the outer surface of the cleaning shafts (7).

2. The aluminum alloy heat dissipation structure for a photovoltaic inverter according to claim 1, characterized in that, The first fixing plate (4) and the second fixing plate (5) are both provided with elongated holes (9). The cross-section of the movable rod (6) is rectangular. The left and right ends of the movable rod (6) are slidably connected inside the elongated holes (9) and both ends are equipped with positioning components (10).

3. The aluminum alloy heat dissipation structure for a photovoltaic inverter according to claim 2, characterized in that, The positioning component (10) includes a fixing block (1001) fixedly connected to the left and right sides of the movable rod (6). The fixing block (1001) has a groove (1002) on the side near the movable rod (6). A lead screw (1003) is threaded onto the fixing block (1001). One end of the lead screw (1003) is located inside the groove (1002) and is fixedly connected to a positioning plate (1004). The other end of the lead screw (1003) is fixedly connected to a handle (1005). A rubber pad (1006) is fixedly connected to the end of the positioning plate (1004) away from the lead screw (1003).

4. The aluminum alloy heat dissipation structure for a photovoltaic inverter according to claim 3, characterized in that, The lower surface of the outer shell (1) is provided with mounting holes (101). The aluminum alloy heat dissipation body (2) is fixedly connected to the lower surface of the outer shell (1) by screws. The aluminum alloy heat dissipation body (2) is provided with multiple heat dissipation holes (201). The heat dissipation holes (201) penetrate the front and rear sides of the aluminum alloy heat dissipation body (2) and multiple first heat dissipation protrusions (202) are fixedly connected to the inner wall. The first heat dissipation protrusions (202) are arc-shaped structures. The multiple first heat dissipation protrusions (202) are evenly distributed along the inner wall of the heat dissipation holes (201).

5. The aluminum alloy heat dissipation structure for a photovoltaic inverter according to claim 4, characterized in that, An air inlet (102) is provided on the left side of the outer casing (1), and an air outlet (103) is provided on the right side of the outer casing (1). A duct (104) is fixedly connected to the air outlet (103). The bottom end of the duct (104) extends to the heat dissipation hole (201). A cooling fan (105) is fixedly connected inside the duct (104).

6. The aluminum alloy heat dissipation structure for a photovoltaic inverter according to claim 5, characterized in that, Multiple second heat dissipation protrusions (301) are fixedly connected to both the left and right sides of the heat dissipation fins (3). The second heat dissipation protrusions (301) are arc-shaped structures, and the multiple second heat dissipation protrusions (301) are evenly distributed along the heat dissipation fins (3).

7. The aluminum alloy heat dissipation structure for a photovoltaic inverter according to claim 6, characterized in that, The outer casing (1) has a thread hole (11) on its left side, and a protective sleeve is installed on the inner wall of the thread hole (11).

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