An integrated heat dissipation unit for power equipment

Abstract

This utility model belongs to the field of power equipment heat dissipation technology, and particularly relates to an integrated heat dissipation unit for power equipment, including a heat sink and a heat exchanger. The heat sink has a ventilation channel in the middle, and several load-bearing teeth are provided within the ventilation channel, dividing the ventilation channel into several air ducts. Each air duct is further divided into several smaller air ducts by parallel heat dissipation teeth. The two opposite sides of the heat sink are mounting surfaces, and a heat exchanger is embedded in the mounting surface. The mounting surface and the surface of the heat exchanger are on the same plane. The advantages are: it allows for double-sided mounting of power devices, reduces the size while meeting heat dissipation requirements, and can withstand the clamping force of the power devices during installation.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment heat dissipation technology, and in particular relates to an integrated heat dissipation unit for power equipment. Background Technology

[0002] With the advancement of technology and the rapid development of power systems, the overall capacity and electrical parameters of power equipment such as reactive power compensation devices are becoming increasingly demanding. This leads to higher current and power losses in power devices, while the overall size of the equipment must be as small as possible. This necessitates heat dissipation units for power devices that can be minimizing size while meeting heat dissipation requirements and preventing contact heating when carrying large currents. Existing heat pipe cooling units, although meeting the requirements for heat dissipation and current-carrying heating, are bulky and inflexible in installation.

[0003] Traditional profile heat dissipation units, while small in size, cannot provide heat dissipation on both sides or handle large currents. This necessitates an integrated heat dissipation unit that can meet the heat dissipation requirements of power devices, prevent contact heating when carrying current, be compact in size, and withstand the clamping pressure required during the installation of power devices. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an integrated heat dissipation unit for power equipment, which improves the heat dissipation effect, can install power devices on both sides, is compact in size, and can withstand the clamping force of power device installation.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] An integrated heat dissipation unit for power equipment includes a heat sink and a heat exchanger. The heat sink has a ventilation channel in the middle, and the ventilation channel has several load-bearing teeth that divide the ventilation channel into several air ducts. The air ducts are divided into several small air ducts by the heat sink teeth that are arranged in parallel with each other. The two opposite sides of the heat sink are mounting surfaces, and the heat exchanger is embedded in the mounting surfaces. The mounting surfaces and the surface of the heat exchanger are on the same plane.

[0007] There are two ventilation ducts, which are symmetrically arranged along the central axis of the heat sink.

[0008] The heat sink is composed of heat sink 1 and heat sink 2 with identical structures. The two opposite sides of heat sink 1 and heat sink 2 are respectively the mounting surface and the welding surface. The welding surfaces of heat sink 1 and heat sink 2 are welded together. Heat dissipation pipes are connected to the mounting surfaces of heat sink 1 and heat sink 2. The thickness of the mounting surface is greater than the thickness of the welding surface.

[0009] The surface roughness of the welded surface is below 3.2 μm.

[0010] The heat dissipation fins are equidistant and have the same thickness.

[0011] The mounting surface of the heat sink has a groove.

[0012] The heat spreader has at least one planar structure.

[0013] The heat spreader is a sintered heat pipe or a channel heat pipe.

[0014] The number of load-bearing teeth is 1 to 4.

[0015] The surface roughness of the mounting surface is below 3.2 μm.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] An integrated heat dissipation unit for power equipment allows for double-sided mounting of power devices, reducing size while meeting heat dissipation requirements and withstanding the clamping force of the power devices. The specific advantages of this integrated heat dissipation unit are:

[0018] 1. Compact size and strong heat dissipation performance

[0019] Volume optimization: Through the overall extruded profile design, the heat sink has a compact structure and a significantly reduced overall volume, meeting the miniaturization requirements of modern power equipment for heat dissipation units.

[0020] High-efficiency heat dissipation: The heat pipe adopts sintered heat pipe or channel heat pipe, which can quickly conduct the heat generated by the power device to the mounting surface by utilizing its high heat transfer efficiency and good temperature uniformity, and remove the heat through the cooling air in the ventilation channel, effectively improving the heat dissipation efficiency.

[0021] 2. Non-contact heating while carrying current

[0022] Good current conductor with large current carrying capacity: The power device mounting surface of the heat sink is located on both sides of the symmetrical structure. The mounting surface, heat dissipation teeth, load-bearing teeth, and welding surface are extruded profiles, and the two welding plates are connected by welding. After welding, the two planes become one. The current is conducted through multiple channels of heat dissipation teeth and load-bearing teeth. The current carrying cross-section is large, ensuring that there will be no heat generation due to insufficient current carrying cross-sectional area.

[0023] Integrated structure: The product has no multiple parts in contact with each other, which avoids the phenomenon of poor contact between multiple parts causing heat generation at the contact points, affecting heat dissipation performance and insufficient airflow, thus improving the reliability and stability of the heat dissipation unit.

[0024] 3. Robust double-sided installation

[0025] Dual-sided mounting capability: The two mounting surfaces of the heat dissipation unit are used to mount power devices, which meets the requirements for dual-sided mounting of power devices and improves the versatility and flexibility of the heat dissipation unit.

[0026] Robust structure: The support teeth of the heat sink can be concentrated in the corresponding area of ​​component mounting. They are relatively thick and have high compressive strength. They can ensure that the mounting surface of the power device does not deform when subjected to large clamping force in the direction perpendicular to the mounting surface of the power device, thus meeting the flatness requirements of the mounting surface of the power device.

[0027] 4. High-efficiency heat transfer and temperature uniformity characteristics

[0028] Heat pipe design: The heat pipe adopts heat pipe technology, which has high heat transfer efficiency and good temperature uniformity. After being embedded in the mounting surface groove of the heat sink, it forms a planar surface structure. The heat pipe is tightly connected to the groove wall of the embedded part of the groove to ensure efficient heat transfer.

[0029] Partial contact: The flat part of the heat pipe is at the same height as the mounting surface, and it is in close contact with the power device in a localized area. This can make full use of its efficient heat transfer and temperature equalization characteristics, and quickly conduct the heat of the power device to the edge of the mounting surface, further improving the heat dissipation efficiency. Attached Figure Description

[0030] Figure 1 This is the front view of this utility model.

[0031] Figure 2 This is a cross-sectional view of the present invention.

[0032] Figure 3 This is the front view of heat sink one or heat sink two.

[0033] Figure 4 It is a cross-sectional view of heat sink one or heat sink two.

[0034] Figure 5 This is a structural diagram of the mounting surface.

[0035] Figure 6 This is a schematic diagram of the connection between the heat pipe and the heat trough.

[0036] Figure 7 This is a schematic diagram of the cross-section of the heat pipe inside the tube groove.

[0037] In the diagram: 1. Heat sink; 2. Power device; 3. Heat pipe; 4. Mounting surface; 5. Welding surface; 6. Small air duct; 7. Heat dissipation teeth; 8. Load-bearing teeth; 9. Tube groove; 10. Curved surface; 11. Flat surface; 12. Welding surface. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0039] See Figures 1-7 An integrated heat dissipation unit for power equipment includes a heat sink 1 and a heat spreader 3. The heat sink 1 is a monolithic extruded profile made of aluminum. A ventilation channel is provided in the middle of the heat sink 1, and several load-bearing teeth 8 are provided within the ventilation channel, which are divided into several air ducts by parallel heat dissipation teeth 7. The air ducts are further divided into several smaller air ducts 6. Two opposite sides of the heat sink 1 are mounting surfaces 4, on which the heat spreader 3 is embedded, serving to rapidly transfer heat and even out temperature. The mounting surfaces 4 and the surfaces of the heat spreader 3 are on the same plane. There are two ventilation channels, symmetrically arranged along the central axis of the heat sink 1.

[0040] See Figures 1-4 The heat sink 1 can adopt a split structure, consisting of heat sink one and heat sink two with identical structures. Heat sink one and heat sink two are integral extruded profiles with double base plates, made of aluminum. The two opposite sides of heat sink one or heat sink two have mounting surfaces 4 and welding surfaces 5, respectively. The finely machined welding surfaces 5 of heat sink one and heat sink two are tightly fitted together and welded (using methods such as soldering or friction welding), forming a single structure. The mounting surfaces 4 of the two heat sinks are located on symmetrical sides, forming a good conductor of current between them, avoiding heat generation due to poor contact when current is conducted. Heat spreaders 3 are connected to the mounting surfaces 4 of both heat sink one and heat sink two. The thickness of the mounting surface 4 is greater than the thickness of the welding surface 5. The surface roughness of the welding surface 5 is below 3.2μm to ensure complete contact between heat sink one and heat sink two. There are 1 to 4 load-bearing teeth 8 to ensure the pressure resistance of the heat sink.

[0041] The load-bearing teeth 8 are concentrated in the corresponding area where the component is installed. They are relatively thick and have high compressive strength, providing support for the mounting base plate and welding base plate of the power device 2 when subjected to pressure, ensuring that the mounting base plate of the power device 2 does not deform and meets the flatness requirements of the power device 2 mounting. The number of load-bearing teeth 8 can be set from 1 to 4 depending on the pressure value. The heat dissipation teeth 7 are equally spaced and have the same thickness. The small air ducts 6 are evenly distributed. Cooling air passes through the small air ducts 6, carrying away the heat from the heat dissipation teeth 7 and the load-bearing teeth 8, thus completing the heat dissipation.

[0042] See Figures 1-7 The heat spreader 3 is a sintered heat pipe or a channel heat pipe, made of copper. It utilizes the heat pipe principle, resulting in high heat transfer efficiency and good temperature uniformity. The mounting surface 4 of the heat sink 1 has a groove 9, and at least one side of the heat spreader 3 is a planar structure. See [link / details]. Figure 7The heat spreader 3 can be embedded into the groove 9 of the mounting surface 4 by means of extrusion, welding, or bonding. The bottom surface of the groove 9 is arc-shaped. After the heat spreader 3 is embedded, it forms a D-shaped structure. The arc-shaped surface 10 of the embedded part of the heat spreader 3 is tightly connected to the groove wall of the groove 9, so that the heat spreader 3 and the mounting surface 4 can achieve efficient heat transfer. The flat surface 11 of the heat spreader 3 is at the same height as the surface of the mounting surface 4. The flat surface 11 of the heat spreader 3 is in close contact with the power device 2. Utilizing the efficient heat transfer and temperature uniformity characteristics, the heat of the power device 2 is quickly conducted to the edge of the heat sink 1, which greatly improves the heat dissipation efficiency of the heat dissipation unit.

[0043] The surface roughness of the mounting surface 4 is below 3.2μm to ensure that the power device 2 can be fully attached to the heat sink 1.

[0044] This invention is applicable to various power equipment and can meet the high requirements of reactive power compensation and other equipment for heat dissipation units, thus having broad application prospects. The heat sink 1, through its integral extruded profile design, has a compact structure and significantly reduced overall volume, meeting the miniaturization requirements of modern power equipment for heat dissipation units. The heat spreader 3 uses sintered heat pipes or channel heat pipes, utilizing their high heat transfer efficiency and good temperature uniformity to quickly conduct the heat generated by the power device 2 to the mounting surface 4, and then remove the heat through the cooling air in the ventilation duct, effectively improving heat dissipation efficiency. The number of load-bearing teeth 8 can be flexibly adjusted according to different application scenarios and the installation requirements of the power device 2, improving the adaptability and versatility of the heat dissipation unit.

Claims

1. An integrated heat dissipation unit for an electrical device, characterized by, It includes a heat sink and a heat exchanger. The heat sink has a ventilation channel in the middle, and there are several load-bearing teeth in the ventilation channel. The load-bearing teeth divide the ventilation channel into several air channels. The air channels are divided into several small air channels by the heat sink teeth arranged in parallel with each other. The two opposite sides of the heat sink are mounting surfaces, and the heat exchanger is embedded in the mounting surface. The mounting surface and the surface of the heat exchanger are on the same plane.

2. An integrated heat sink unit for an electrical device according to claim 1, wherein, There are two ventilation ducts, which are symmetrically arranged along the central axis of the heat sink.

3. An integrated heat sink unit for an electrical device according to claim 1, wherein, The heat sink is composed of heat sink 1 and heat sink 2 with identical structures. The two opposite sides of heat sink 1 and heat sink 2 are respectively the mounting surface and the welding surface. The welding surfaces of heat sink 1 and heat sink 2 are welded together. Heat dissipation pipes are connected to the mounting surfaces of heat sink 1 and heat sink 2. The thickness of the mounting surface is greater than the thickness of the welding surface.

4. An integrated heat sink unit for an electrical device according to claim 3, wherein, The surface roughness of the welded surface is below 3.2 μm.

5. An integrated heat sink unit for an electrical device according to claim 1, wherein, The heat dissipation fins are equidistant and have the same thickness.

6. The integrated heat dissipation unit for power equipment according to claim 1, characterized in that, The mounting surface of the heat sink has a groove.

7. An integrated heat sink unit for electrical equipment according to claim 1, wherein The heat spreader has at least one planar structure.

8. An integrated heat sink unit for an electrical device according to claim 1, wherein, The heat spreader is a sintered heat pipe or a channel heat pipe.

9. An integrated heat dissipation unit for power equipment according to claim 1, characterized in that, The number of load-bearing teeth is 1 to 4.

10. The integrated heat sink unit for electrical equipment according to claim 1, wherein The surface roughness of the mounting surface is below 3.2 μm.

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