Inverter heat dissipation air duct structure and inverter

Abstract

The utility model discloses an inverter heat radiation air duct structure and an inverter, the inverter heat radiation air duct structure comprises a heat radiator and a heat radiation frame which are arranged on an inverter housing, one side of the heat radiation frame is provided with an opening structure, and one side of the heat radiation frame provided with the opening structure is configured to be connected with the inverter housing; a cavity formed by the radiating frame and the shell is configured to contain the radiator, an air inlet and at least one fan are arranged at one end of the radiating frame, a plurality of air outlets are formed in the other end, opposite to the fan, of the radiating frame, and the blowing direction of the fan is consistent with the extending direction of radiating teeth of the radiator; a notch is formed in one side, adjacent to the air outlet, of the heat dissipation frame, the notch is configured to accommodate a potting inductor of the inverter, and the bottom surface of the notch is configured to be in contact with the potting inductor. According to the utility model, the heat dissipation performance of the inverter can be improved without adding a fan.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to an inverter heat dissipation air duct structure and an inverter. Background Art

[0002] The main heat generating components of an inverter include power semiconductor devices and power inductors. The semiconductor devices are cooled by heat sinks, and the inductors conduct heat to the inverter housing through potting for heat dissipation.

[0003] With the continuous improvement of semiconductor technology, the volume of photovoltaic inverters is getting smaller and the power is increasing. To meet the heat dissipation requirements, it is often necessary to increase the fan to improve the heat dissipation capacity to ensure the reliability of the product; however, increasing the fan requires a corresponding increase in the size of the inverter, which is contrary to the minimum volume design of the inverter, and the cost will also increase.

[0004] The disclosure of the above background art content is only used to assist in understanding the concept and technical solution of the present utility model, and it does not necessarily belong to the prior art of this patent application, nor will it necessarily give technical guidance; in the case where there is no clear evidence that the above content was publicly available before the filing date of this patent application, the above background art should not be used to evaluate the novelty and creativity of this application. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an inverter heat dissipation air duct structure and an inverter, which can improve the heat dissipation performance of the inverter without adding a fan.

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0007] An inverter heat dissipation air duct structure includes a heat sink disposed on the inverter housing, and further includes a heat dissipation frame. One side of the heat dissipation frame has an opening structure, and the side of the heat dissipation frame having the opening structure is configured to be connected to the inverter housing;

[0008] The cavity formed by the heat dissipation frame and the housing is configured to accommodate the heat sink. An air inlet and at least one fan are provided at one end of the heat dissipation frame, and a plurality of air outlets are provided at the other end opposite to the fan. The blowing direction of the fan is consistent with the extending direction of the heat dissipation teeth of the heat sink;

[0009] A notch is provided on one side of the heat dissipation frame adjacent to the air outlet. The notch is configured to accommodate the potted inductor of the inverter, and the bottom surface of the notch is configured to be in contact with the potted inductor.

[0010] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, a plurality of heat dissipation fins are provided on the potted inductor, and the extending direction of the heat dissipation fins is consistent with the blowing direction of the fan.

[0011] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the heat dissipation fins are provided on the upper end and both sides of the potted inductor.

[0012] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the notch is in a U-shaped structure, the bottom surface of the U-shaped structure is in contact with the top surface of the potted inductor, and a plurality of L-shaped extensions are provided on both sides of the bottom surface of the notch, and the extensions are configured to be in contact with the heat dissipation fins on the top surface and the side surface of the potted inductor.

[0013] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, a cover plate and a second opening structure are provided on one side surface of the heat dissipation frame, the cover plate matches the shape of the second opening, and the area of the cover plate is larger than the area of the second opening.

[0014] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, at least one handle-shaped hanging plate is provided on the cover plate; and / or,

[0015] The cover plate and the second opening are provided with a matching guiding structure, and the guiding structure includes an inclined structure approaching the radiator.

[0016] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the surface of the radiator opposite to the heat dissipation teeth is in contact with the power circuit board of the inverter.

[0017] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, two fans are provided at one end of the heat dissipation frame; and / or,

[0018] The air outlet is in a mesh structure.

[0019] According to another aspect of the present invention, the present invention provides an inverter, including an inverter housing, a power circuit board, a potted inductor, and the inverter heat dissipation air duct structure as described in any one of the foregoing technical solutions or a combination of multiple technical solutions. One side of the bottom of the inverter housing is provided with the potted inductor and the inverter heat dissipation air duct structure, and the other side is provided with the power circuit board, and the power circuit board is configured to be in contact with the radiator.

[0020] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, a power module is provided on the power circuit board, and the power module is arranged in the direction towards the radiator.

[0021] The beneficial effects brought by the technical solution provided by the present utility model are as follows:

[0022] a. The present utility model provides a heat dissipation frame capable of accommodating a radiator, a fan, and some potted inductors. The blowing direction of the fan is set to be consistent with the extending direction of the heat dissipation teeth of the radiator. A plurality of heat dissipation fins are arranged on the potted inductor, and the heat dissipation frame is in contact with the heat dissipation fins. Under the guiding action of the cover plate, the heat dissipation fins, and the heat dissipation teeth of the radiator, the air flow passes through the gaps between the heat dissipation teeth of the radiator and the gaps between the heat dissipation fins on the potted inductor located inside the heat dissipation frame, and then flows out from the air outlet, which can accelerate the heat dissipation on the surfaces of the radiator and the potted inductor, thereby improving the heat dissipation performance of the entire product and the reliability of the product;

[0023] b. The side notch of the heat dissipation frame of the present utility model is in a U-shaped structure, and a plurality of L-shaped extension parts are arranged on both sides of the bottom surface of the notch. The extension parts are configured to be in contact with the heat dissipation fins on the top surface and the side surface of the potted inductor, which can accelerate the heat transfer from the potted inductor to the heat dissipation frame and improve the heat dissipation efficiency;

[0024] c. The present utility model is provided with a matching guiding structure on the cover plate and the second opening structure. The guiding structure includes an inclined structure approaching the radiator, which can make more air at the air inlet end pass through the heat dissipation teeth of the radiator and then flow out from the air outlet end, thereby improving the heat dissipation efficiency. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 The first explosion diagram of the inverter provided for an exemplary embodiment of the present utility model;

[0027] Figure 2 The second explosion diagram of the inverter provided for an exemplary embodiment of the present utility model;

[0028] Figure 3 The heat dissipation air flow diagram of the inverter provided for an exemplary embodiment of the present utility model.

[0029] Among them, the attached drawing reference numerals include: 1 - radiator, 2 - potted inductor, 21 - heat dissipation fins, 3 - radiator, 4 - heat dissipation frame, 5 - air outlet, 6 - fan, 7 - first screw, 8 - nut, 9 - cover plate, 10 - second screw, 11 - hanging plate, 12 - third screw, 13 - power circuit board, 14 - power module, 15 - heat dissipation cavity. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0032] In an embodiment of the present utility model, an inverter is provided. Refer to Figure 1 and Figure 2 , the inverter includes an inverter housing 1, a power circuit board 13, a potted inductor 2, and an inverter heat dissipation air duct structure. One side of the bottom of the inverter housing 1 is provided with the potted inductor 2 and the inverter heat dissipation air duct structure, and the other side thereof is provided with the power circuit board 13.

[0033] In this embodiment, the inverter heat dissipation air duct structure includes a radiator 3 and a heat dissipation frame 4. The radiator 3 and the heat dissipation frame 4 are arranged on the same side of the inverter housing 1. One side of the heat dissipation frame 4 has an opening structure, and the side of the heat dissipation frame 4 having the opening structure is configured to be connected to the housing 1 of the inverter; a heat dissipation cavity 15 formed by the heat dissipation frame 4 and the housing 1, and the radiator 3 passes through the opening structure and is accommodated in the heat dissipation cavity 15. Specifically, as Figure 1As shown, the radiator 3 is fixed to the inverter housing 1 by fasteners such as screws, and the heat dissipation frame 4 is fastened to the inverter housing 1 by screws and nuts 8 passing through the inverter housing 1.

[0034] One end of the heat dissipation frame 4 (such as Figure 1 the lower end shown) is provided with an air inlet and at least one fan 6. For example, two fans 6 are provided, and the blowing direction of the fan 6 is consistent with the extending direction of the heat dissipation teeth of the radiator 3. As Figure 1 shown, the fan 6 is fastened to the lower end of the heat dissipation frame 4 by a plurality of first screws 7. On the heat dissipation frame 4, the other end opposite to the fan 6 is provided with a plurality of air outlets 5, and the air outlets 5 can be set as a plurality of juxtaposed grids or a mesh structure.

[0035] On one side of the heat dissipation frame 4 adjacent to the air outlet 5 (such as Figure 1 the left side position shown in the figure) is provided with a notch, and the notch is configured to accommodate the potted inductor 2. Preferably, the bottom surface of the notch is configured to contact the potted inductor 2.

[0036] Preferably, a plurality of heat dissipation fins 21 are provided on the potted inductor 2, and the extending direction of the heat dissipation fins 21 is consistent with the blowing direction of the fan 6.

[0037] More preferably, the upper end and both sides of the potted inductor 2 are provided with the heat dissipation fins 21. The side notch of the heat dissipation frame 4 is in a U-shaped structure, the bottom surface of the U-shaped structure contacts the top surface of the potted inductor 2, and a plurality of L-shaped extensions are provided on both sides of the bottom surface of the notch, and the extensions are configured to contact the heat dissipation fins 21 on the top surface and side surface of the potted inductor 2. Compared with the existing potted inductor that only conducts heat and dissipates heat through the housing of the inverter, the heat of the potted inductor in the present invention can be transferred to a plurality of L-shaped extensions and the heat dissipation frame through the heat dissipation fins 21, thereby improving the heat dissipation efficiency.

[0038] In this embodiment, a cover plate 9 and a second opening structure are provided on one side surface of the heat dissipation frame 4. The cover plate 9 matches the shape of the second opening, and the area of the cover plate 9 is larger than the area of the second opening structure. Specifically, the cover plate 9 can be fixedly connected to the inverter housing around the second opening by a second screw 10. By removing the cover plate 9, the radiator 3, the fan 6 and the potted inductor 2 inside the heat dissipation frame 4 can be conveniently and quickly overhauled. The cover plate 9 and the second opening are provided with a matching guiding structure, and the guiding structure includes an inclined structure approaching the radiator 3. The guiding structure can make the air at the air inlet end pass through the heat dissipation teeth of the radiator 3 more and then flow out from the air outlet end 5, improving the heat dissipation efficiency.

[0039] See Figure 3 When the fan 6 operates, it draws in the normal-temperature air from the outside into the heat dissipation cavity 15. The air flow enters from the air inlet of the heat dissipation frame 4. Due to the guiding effect of the cover plate 9, the heat dissipation fins 21 and the heat dissipation teeth of the radiator 3, the air flow changes direction and then passes through the gaps between the heat dissipation teeth of the radiator 3 and the gaps between the heat dissipation teeth on the potted inductor 2 located inside the heat dissipation frame 4, and then flows out from the mesh air outlet 5 of the heat dissipation frame 4. Figure 3 The arrows in Figure 3 indicate the direction of the air flow. This heat dissipation air duct structure can achieve accelerating the heat dissipation on the surfaces of the radiator and the potted inductor without the need to increase the fan, thereby improving the heat dissipation performance and reliability of the entire product and preventing the product from malfunctioning due to overheating.

[0040] In this embodiment, both the heat dissipation frame 4 and the cover plate 9 provided thereon adopt a sheet metal structure, which has high production efficiency and low cost. In addition, at least one hanging plate 11 is provided on the cover plate 9. The hanging plate 11 can be set in the shape of a handle for hanging the inverter or for people to carry the inverter. Specifically, the hanging plate 11 can be fastened to the cover plate 9 by the third screw 12.

[0041] In this embodiment, the power circuit board 13 can be specifically arranged on the radiator 3 or on the inverter housing 1. A power module 14 is provided on the power circuit board 13, and the power module 14 is arranged in the direction towards the radiator 3 to improve the heat dissipation efficiency. Preferably, the power circuit board 13 is configured to be in contact with the radiator 3, which can further improve the heat dissipation efficiency.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0043] The above description is only the specific implementation manners of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An inverter heat dissipation duct structure, comprising a heat sink (3) arranged on an inverter housing, characterized in that: It also comprises a heat dissipation frame (4), one side of the heat dissipation frame (4) having an opening structure, and the side of the heat dissipation frame (4) having the opening structure is configured to be connected to a housing (1) of an inverter; The cavity formed by the heat dissipation frame (4) and the housing (1) is configured to accommodate the radiator (3); one end of the heat dissipation frame (4) is provided with an air inlet and at least one fan (6); the other end opposite to the fan (6) is provided with a plurality of air outlets (5); the blowing direction of the fan (6) is consistent with the extension direction of the heat dissipation teeth of the radiator (3); A notch is provided on one side of the heat dissipation frame (4) adjacent to the air outlet (5), the notch being configured to accommodate a potted inductor (2) of the inverter, and the bottom surface of the notch being configured to contact the potted inductor (2).

2. The inverter heat dissipation duct structure according to claim 1, characterized in that: The potted inductor (2) is provided with a plurality of heat dissipation fins (21), and the extension direction of the heat dissipation fins (21) is consistent with the blowing direction of the fan (6).

3. The inverter heat dissipation duct structure according to claim 2, characterized in that: The heat dissipation fins (21) are provided at the upper end and both sides of the potted inductor (2).

4. The inverter heat dissipation duct structure according to claim 3, characterized in that: The notch is in a U-shaped structure, the bottom surface of the U-shaped structure is in contact with the top surface of the potted inductor (2), and a plurality of L-shaped extensions are provided on both sides of the bottom surface of the notch, and the extensions are configured to contact the heat dissipation fins (21) on the top and side surfaces of the potted inductor (2).

5. The inverter heat dissipation duct structure according to claim 1, characterized in that: A cover plate (9) and a second opening structure are provided on one side surface of the heat dissipation frame (4); the cover plate (9) matches the shape of the second opening, and the area of ​​the cover plate (9) is larger than the area of ​​the second opening.

6. The inverter heat dissipation duct structure according to claim 5, characterized in that: The cover plate (9) is provided with at least one handle-shaped hanging plate (11); and / or, The cover plate (9) and the second opening are provided with matching guide structures, and the guide structure comprises an inclined structure approaching the radiator (3).

7. The inverter heat dissipation duct structure according to claim 1, characterized in that: A surface of the heat sink (3) opposite to the heat dissipation teeth is in contact with a power circuit board (13) of the inverter.

8. The inverter heat dissipation duct structure according to claim 1, characterized in that: Two fans (6) are provided at one end of the heat dissipation frame (4); and / or, The air outlet (5) is a mesh structure.

9. An inverter, characterized in that: The inverter housing (1) comprises an inverter housing (1), a power circuit board (13), a potted inductor (2), and an inverter heat dissipation duct structure according to any one of claims 1 to 8, wherein the potted inductor (2) and the inverter heat dissipation duct structure are arranged on one side of the bottom of the inverter housing (1), and the power circuit board (13) is arranged on the other side thereof, and the power circuit board (13) is configured to be in contact with the radiator (3).

10. The inverter according to claim 9, characterized in that: A power module (14) is provided on the power circuit board (13), and the power module (14) is arranged in the direction of the heat sink (3).

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