A fin water-cooled heat sink for IGBT

Abstract

The utility model discloses a fin water cooling radiator for IGBT related to electrical element water cooling heat radiation technical field, including fuselage, water cooling groove, turbulence branch pipe, diaphragm and fin, when carrying out water cooling to IBGT module, through water pump and turbulence main pipe to turbulence component input pressure water, and diaphragm occurs elastic deformation under the action of pressure water, and when pressure relief, diaphragm occurs reverse elastic deformation, and the water in turbulence component is pressurized and pressure relief in circulation to drive connecting rod and fin to execute swing action, and the water at the water cooling groove and IGBT module combination face is disturbed to become turbulent flow from turbulent flow, and the heat exchange efficiency has been improved. The utility model's fin adopts spiral sector sandwich structure, can effectively improve turbulence efficiency, and high pressure water is used to the diaphragm to drive connecting rod and fin swing, and the heat dissipation efficiency of IGBT module is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of water cooling technology for electrical components, specifically a finned water cooling radiator for IGBTs. Background Technology

[0002] Insulated-Gate Bipolar Transistors (IGBTs) combine the high input impedance of MOSFETs with the high current carrying capacity of bipolar transistors, making them core devices for efficient power conversion in industrial power supplies. They convert direct current to alternating current (inverter) or regulate voltage and frequency (frequency converter) through high-frequency switching, and are widely used in frequency converters, inverter power supplies, induction heating, and other applications. However, IGBT modules experience significant temperature rise during operation, making heat dissipation a key concern in design and application. Effective heat dissipation can improve overall performance, reliability, and lifespan; therefore, developing a finned water-cooled heat sink for IGBTs is essential.

[0003] Currently, Chinese Patent Publication No. 219457605U discloses a water-cooled heat sink for IGBTs. This device includes a heat sink body, a water inlet, a guide section, and turbulence-inducing fins. Cooling water enters the cavity inside the heat sink body through the inlet pipe, and then flows to the turbulence-inducing fins after being guided by the guide section. The turbulence-inducing fins agitate the flowing cooling water, changing it from turbulent to turbulent flow, thereby increasing the flow velocity of the cooling water on the lower end face of the IGBT module. As a result, the cooling water can carry away more heat when flowing over the lower end face of the IGBT module. However, the turbulence-inducing fins of this IGBT water-cooled heat sink are fixed inside the heat sink body, which often requires a relatively fast water flow velocity to generate turbulence. The efficiency of generating turbulence is not high, and the heat dissipation efficiency needs to be further improved.

[0004] In summary, while existing IGBT water-cooled heat sinks can achieve water cooling for IGBTs to a certain extent, they still have many shortcomings. Therefore, we have developed a finned water-cooled heat sink for IGBTs. Utility Model Content

[0005] The technical problem this invention aims to solve is to overcome the shortcomings of existing technologies and provide a finned water-cooled heat sink for IGBTs. It utilizes high-pressure water acting on a diaphragm to drive the connecting rod up and down and the fins up and down, achieving a turbulence effect on the fluid and improving the heat dissipation efficiency of the IGBT module. The fins adopt a spiral fan-shaped structure, further enhancing the fluid turbulence effect. The fins have a sandwich structure, i.e., a copper outer shell and a foam inner shell, possessing a high specific surface area, further improving the turbulence effect and ensuring good overall sealing. In summary, this finned water-cooled heat sink offers advantages such as good turbulence effect and good sealing performance, effectively solving the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a finned water-cooled heat sink for IGBTs, comprising a body, water-cooling tanks, a flow-dispersing manifold, a diaphragm, and fins; the body has a thin-walled structure, a water inlet pipe is provided on one side of the body, a drain pipe is provided on the other side of the body opposite to the water inlet pipe, a plurality of water-cooling tanks are linearly arrayed along the length of the body at the upper end of the body, sealing gaskets are fitted around the water-cooling tanks, an IGBT module is screwed to the upper end of the water-cooling tank, and a flow-dispersing component is provided on the bottom surface inside the body corresponding to the water-cooling tank;

[0007] The turbulence-disrupting assembly includes the diaphragm, the connecting rod, and the fins. The fins are fan-shaped. A turbulence-disrupting main pipe is provided below the body. A water pump is threadedly connected to the side of the turbulence-disrupting main pipe near the water inlet pipe. The turbulence-disrupting main pipe is connected to multiple turbulence-disrupting branch pipes. The turbulence-disrupting branch pipes are screwed to the bottom of the body. The diaphragm is adapted to fit inside the turbulence-disrupting branch pipes. A connecting rod is snapped onto the side of the diaphragm near the fins. The other end of the connecting rod is fixedly connected to the lower part of the long arc edge of the fin below the apex corner.

[0008] Preferably, the width and length of the water-cooling tank are 15mm and 30mm shorter than the total width and total length of the IGBT module, respectively.

[0009] Preferably, the maximum elastic deformation displacement of the diaphragm under the action of pressurized water is 15 mm.

[0010] Preferably, the fin has a spiral sandwich structure, the outer shell of the fin is a copper layer, and the core of the fin is a foam layer.

[0011] Preferably, the total length of the fins is half the total length of the water cooling tank, and the total width of the fins is two-thirds the total width of the water cooling tank.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: High-pressure water acts on the diaphragm and, through a connecting rod, drives the fins to swing up and down, achieving a turbulence effect on the fluid and improving the heat dissipation efficiency of the IGBT module. The fins adopt a spiral fan-shaped structure, enhancing the fluid turbulence effect. The fins have a sandwich structure, i.e., the outer shell is copper and the interior is foam, possessing a high specific surface area, further improving the turbulence effect and ensuring good overall sealing. In summary, this finned water-cooled radiator has advantages such as good turbulence effect and good sealing performance. Attached Figure Description

[0013] Figure 1 This is an isometric view of the present invention;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3This is the front view of the present invention;

[0016] Figure 4 This is a full sectional view of the turbulence-disrupting component of this utility model;

[0017] Figure 5 This is an isometric view of the fin of this utility model;

[0018] Figure 6 This is a full sectional view of the fins of this utility model.

[0019] In the diagram: 1 is the fuselage, 2 is the water inlet pipe, 3 is the drain pipe, 4 is the water cooling tank, 5 is the sealing gasket, 6 is the IGBT module, 7 is the turbulence branch pipe, 8 is the turbulence main pipe, 9 is the water pump, 10 is the diaphragm, 11 is the connecting rod, 12 is the fin, 13 is the copper foil layer, and 14 is the foam layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-6 This utility model provides a technical solution: a finned water-cooled heat sink for IGBTs, including a body 1, water-cooling tanks 4, turbulence-dissipating pipes 7, diaphragms 10, and fins 12; the body 1 has a thin-walled structure, with a water inlet pipe 2 on one side of the body 1 and a drain pipe 3 on the other side of the body 1 opposite to the water inlet pipe 2; multiple water-cooling tanks 4 are linearly arrayed along the length of the body 1 at the upper end of the body 1; sealing gaskets 5 are clamped around the water-cooling tanks 4; IGBT modules 6 are screwed to the upper end of the water-cooling tanks 4; the IGBT modules 6 and the water-cooling tanks 4 are sealed by the sealing gaskets 5 to prevent water leakage; cooling water enters the body 1 through the water inlet pipe 2 and then exits through the drain pipe 3; the cooling water contacts the bottom surface of the IGBT modules 6 and carries away heat; turbulence-dissipating components are provided on the bottom surface of the body 1 corresponding to the water-cooling tanks 4;

[0022] Specifically, the turbulence-disrupting assembly includes a diaphragm 10, a connecting rod 11, and fins 12. The fins 12 are fan-shaped. A turbulence-disrupting main pipe 8 is provided below the body 1. A water pump 9 is threadedly connected to the side of the turbulence-disrupting main pipe 8 near the water inlet pipe 2. The turbulence-disrupting main pipe 8 is connected to multiple turbulence-disrupting branch pipes 7. The turbulence-disrupting branch pipes 7 are screwed to the bottom of the body 1. The diaphragm 10 is snapped into the turbulence-disrupting branch pipe 7. A connecting rod 11 is snapped into the side of the diaphragm 10 near the fins 12. The other end of the connecting rod 11 is fixedly connected to the lower part of the long arc edge of the fins 12.

[0023] It is understandable that when the cooling water flows inside the housing 1, it contacts the fins 12 and forms a turbulent flow to cool the bottom surface of the IGBT module 6. At the same time, under the action of the water pump 9, pressurized water is input to the turbulence assembly through the turbulence main pipe 8 and the turbulence branch pipe 7. The pressurized water enters the turbulence branch pipe 7. Under the action of the pressurized water, the diaphragm 10 undergoes elastic deformation. When the pressure is released, the diaphragm 10 undergoes reverse elastic deformation. The water in the turbulence assembly is pressurized and depressurized in a cycle. The diaphragm 10 deforms repeatedly, thereby driving the fins 12 to swing up and down through the connecting rod 11. This disturbs the water at the interface between the water cooling tank 4 and the IGBT module 6 from turbulent flow to turbulent flow, improving the heat exchange efficiency and thus improving the water cooling effect on the IGBT module 6.

[0024] Furthermore, the width and length of the water cooling tank 4 are 15mm and 30mm shorter than the total width and total length of the IGBT module 6, respectively. That is, the IGBT module 6 is installed on the water cooling tank 4. The size of the IGBT module 6 is larger than the size of the water cooling tank 4. At the same time, a sealing gasket 5 is provided between the IGBT module 6 and the water cooling tank 4 to ensure the sealing effect.

[0025] Furthermore, the maximum elastic deformation displacement of the diaphragm 10 under the action of pressurized water is 15mm, which limits the deformation displacement of the diaphragm 10 and avoids excessive swing amplitude of the fins 12.

[0026] Furthermore, the fin 12 has a spiral sandwich structure, with the outer shell of the fin 12 being a copper layer 13 and the core of the fin 12 being a foam layer 14; the fin 12 has a spiral fan shape, which is similar to the shape of a fan blade, which can enhance the fluid turbulence effect; the fin 12 has a sandwich structure, that is, the outer shell is copper and the inside is foam, which has a high specific surface area and further improves the turbulence effect.

[0027] In addition, the total length of fin 12 is half the total length of water cooling tank 4, and the total width of fin 12 is two-thirds the total width of water cooling tank 4.

[0028] Working principle: When water cooling is applied to the IGBT module 6, pressurized water is input to the turbulence assembly through the water pump 9 and the turbulence manifold 8. Under the action of pressurized water, the diaphragm 10 undergoes elastic deformation. When the pressure is released, the diaphragm 10 undergoes reverse elastic deformation. This cycle pressurizes and releases the water in the turbulence assembly, thereby driving the connecting rod 11 and the fins 12 to swing up and down. This disrupts the turbulent flow of water at the interface between the water cooling tank 4 and the IGBT module 6, improving the heat exchange efficiency and thus enhancing the water cooling effect on the IGBT module 6.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A finned water-cooled heat sink for IGBTs, characterized in that: It includes a fuselage (1), a water-cooling tank (4), a turbulence-disrupting pipe (7), a diaphragm (10), and fins (12); the fuselage (1) is a thin-walled structure, a water inlet pipe (2) is provided on one side of the fuselage (1), a drain pipe (3) is provided on the other side of the fuselage (1) opposite to the water inlet pipe (2), a plurality of water-cooling tanks (4) are linearly arrayed along the length of the fuselage (1) at the upper end of the fuselage (1), sealing gaskets (5) are installed around the water-cooling tanks (4), an IGBT module (6) is screwed to the upper end of the water-cooling tanks (4), and a turbulence-disrupting component is provided on the bottom surface of the fuselage (1) corresponding to the water-cooling tanks (4); The turbulence assembly includes the diaphragm (10), the connecting rod (11), and the fin (12). The fin (12) is fan-shaped. A turbulence main pipe (8) is provided below the body (1). A water pump (9) is threadedly connected to the side of the turbulence main pipe (8) near the water inlet pipe (2). The turbulence main pipe (8) is connected to multiple turbulence branch pipes (7). The turbulence branch pipes (7) are screwed to the bottom of the body (1). The diaphragm (10) is snapped into the turbulence branch pipe (7). A connecting rod (11) is snapped onto the side of the diaphragm (10) near the fin (12). The other end of the connecting rod (11) is fixedly connected to the lower part of the long arc edge of the fin (12).

2. A finned water-cooled heat sink for IGBTs according to claim 1, characterized in that: The width and length of the water-cooled tank (4) are 15mm and 30mm shorter than the total width and total length of the IGBT module (6), respectively.

3. A finned water-cooled heat sink for IGBTs according to claim 1, characterized in that: The maximum elastic deformation displacement of the diaphragm (10) under the action of pressurized water is 15 mm.

4. A finned water-cooled heat sink for IGBTs according to claim 1, characterized in that: The fin (12) has a spiral sandwich structure, the outer shell of the fin (12) is a copper layer (13), and the core of the fin (12) is a foam layer (14).

5. A finned water-cooled heat sink for IGBTs according to claim 1, characterized in that: The total length of the fins (12) is half the total length of the water cooling tank (4), and the total width of the fins (12) is two-thirds the total width of the water cooling tank (4).

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