Air-cooled heat dissipation structure

Abstract

The utility model discloses a kind of air-cooled heat dissipation structures, including hot end heat conduction copper sheet, multiple heat conduction copper pipes, cold end heat conduction copper sheet, heat dissipation fin, vortex fan;Vortex fan is installed on shell, and vortex fan's air outlet acts on heat dissipation fin;Multiple heat conduction copper pipes are arranged side by side, and the first end and the second end of heat conduction copper pipe are all horizontally arranged, the second end of heat conduction copper pipe is arranged height higher than the first end, and the first end and the second end of heat conduction copper pipe are connected by connecting portion connection.In the present application, multiple heat source heat is collected in hot end heat dissipation copper sheet, is conducted to the cold end heat conduction copper sheet located in the outside of shell by heat conduction copper pipe, and is transferred to heat dissipation fin again, is blown out by vortex fan, and the close connection of each part greatly reduces thermal resistance;Heat conduction copper pipe selects appropriate quantity according to the total power of heat source, and is bent according to the distance between heating surface and heat dissipation surface, and such compact structure design can improve the anti-impact vibration performance of complete machine.

Description

Technical Field

[0001] This utility model relates to the field of chassis heat dissipation technology, and in particular to an air-cooled heat dissipation structure. Background Technology

[0002] In industrial and military applications, electronic devices require heat dissipation. For air cooling, most systems utilize internal heatsinks and airflow designs within the chassis. While this approach can meet high-power cooling needs, the internal airflow requires inlet and outlet vents, impacting the chassis's electromagnetic compatibility (EMC) and dust resistance. Another method uses external fans. Heat is first conducted to the chassis, and then an external fan blows it out. This design is effective for single heat sources, but for multiple heat sources, the heat must be concentrated on a hot-end copper block. This block then conducts heat through contact with the chassis before the fan blows it out. This method involves two heat exchange points between the chassis and the copper block. Due to assembly errors and the need for vibration and impact protection, thermal pads are required, significantly increasing thermal resistance. Therefore, this method is unsuitable for devices with multiple heat sources, high power, small size, and stringent EMC, dust resistance, and vibration / impact protection requirements.

[0003] Therefore, it is necessary to develop an air-cooled heat dissipation structure to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to design an air-cooled heat dissipation structure to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions: The air-cooled heat dissipation structure includes: Hot-end thermally conductive copper sheet; the lower surface of the hot-end thermally conductive copper sheet is connected to multiple heat sources; the hot-end thermally conductive copper sheet is placed inside the outer casing of the product to be cooled; Multiple heat-conducting copper pipes; the first end of the multiple heat-conducting copper pipes is connected to the upper surface of the heat-conducting copper sheet at the hot end; Cold end heat-conducting copper sheet; the outer shell has through holes, the cold end heat-conducting copper sheet is installed above the through holes, and the second ends of multiple heat-conducting copper tubes pass through the through holes and are connected to the lower surface of the cold end heat-conducting copper sheet; Heat dissipation fins; heat dissipation fins are installed on the upper surface of the cold-end heat-conducting copper sheet; Vortex fan; the vortex fan is mounted on the housing, and the air outlet of the vortex fan acts on the heat dissipation fins.

[0006] Multiple heat-conducting copper pipes are arranged side by side. The first and second ends of the heat-conducting copper pipes are both horizontally positioned. The second end of the heat-conducting copper pipe is positioned at a higher height than the first end. The first and second ends of the heat-conducting copper pipes are connected by a connecting part.

[0007] The beneficial effects of this utility model are as follows: In this application, heat from multiple heat sources is collected at the hot end of the heat dissipation copper fin, and then conducted through the heat-conducting copper pipe to the cold end of the heat-conducting copper fin located outside the casing. The heat is then transferred to the heat dissipation fins and blown out by the vortex fan. The tight connection of each part greatly reduces thermal resistance. The number of heat-conducting copper pipes is selected according to the total power of the heat sources, and they are bent according to the distance between the heating surface and the heat dissipation surface. This compact structural design can improve the shock and vibration resistance of the whole machine. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the heat-conducting copper tube in this utility model; Figure 3 This is a schematic diagram of the installation structure of the through hole and mounting groove on the outer shell of this utility model; Figure 4 This is a schematic diagram of the installation structure of the heat dissipation fins and the vortex fan in this utility model; Figure 5 This is a schematic diagram of the installation structure of the air duct cover of this utility model; Figure 6 This is a schematic diagram of the distribution structure of multiple heat sources in this utility model.

[0009] The following are the labels in the diagram: 1. Hot-end heat-conducting copper sheet; 2. Heat-conducting copper pipe; 3. Cold-end heat-conducting copper sheet; 4. Heat sink fins; 5. Outer shell; 6. Swirl fan; 7. Air duct cover; 8. Heat source; 9. Through hole; 10. Mounting slot; 11. Heat source one; 12. Heat source two; 13. Heat source three; 14. Heat source four; 15. Heat source five. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0011] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0012] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0013] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0015] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] like Figure 1-4 As shown, the air-cooled heat dissipation structure includes: Hot-end heat-conducting copper sheet 1; the lower surface of the hot-end heat-conducting copper sheet 1 is soldered to multiple heat sources 8 (which may be chips or other heat-generating electronic components); the hot-end heat-conducting copper sheet 1 is placed inside the outer casing 5 of the product to be cooled; Multiple heat-conducting copper pipes 2; the first end of the multiple heat-conducting copper pipes 2 is soldered to the upper surface of the hot-end heat-conducting copper sheet 1. Cold end heat-conducting copper sheet 3; a through hole 9 is provided on the outer shell 5, the cold end heat-conducting copper sheet 3 is installed above the through hole 9, and the second ends of multiple heat-conducting copper tubes 2 pass through the through hole 9 and are soldered to the lower surface of the cold end heat-conducting copper sheet 3. Heat dissipation fins 4; heat dissipation fins 4 are soldered to the upper surface of the cold-end heat-conducting copper sheet 3; Vortex fan 6; Vortex fan 6 is mounted on the housing, and the air outlet of vortex fan 6 acts on heat dissipation fins 4.

[0018] In this embodiment, the various parts are connected by soldering, which greatly reduces thermal resistance.

[0019] like Figure 1-2 As shown, in some embodiments, multiple heat-conducting copper pipes 2 are arranged side by side. The first and second ends of each heat-conducting copper pipe 2 are horizontally positioned, while the second end is positioned at a higher height than the first end. The first and second ends of the heat-conducting copper pipe 2 are connected by a connecting part, and the heat-conducting copper pipe 2 is in a bent posture. In some embodiments, the design of the heat-conducting copper pipes 2 involves selecting an appropriate number based on the total power of the heat source and bending them according to the distance between the heating surface and the heat dissipation surface. This design can improve the overall machine's resistance to impact and vibration.

[0020] like Figure 3 As shown, in some embodiments, a mounting groove 10 is provided around the edge of the through hole 9, and a heat-insulating and conductive rubber strip is installed in the mounting groove 10. The cold-end heat-conducting copper sheet 3 is installed on the heat-insulating and conductive rubber strip. This structural design is used to isolate the internal environment of the chassis from the external environment, ensuring the electromagnetic insulation performance and tri-proof performance of the whole machine. It can also isolate the heat dissipation components (cold-end heat-conducting copper sheet 3, heat dissipation fins 4) from the chassis, preventing heat from being conducted to the chassis and allowing heat to be dissipated as much as possible through air cooling.

[0021] like Figure 5 As shown, in some embodiments, an air duct cover 7 is installed on top of the heat dissipation fins 4. The air duct cover 7 is U-shaped, and flange plates are formed on both sides of the air duct cover 7. The air duct cover 7 is connected to the outer casing 5 through the flange plates. The air duct cover 7 can press the heat dissipation fins 4 and the cold end heat-conducting copper sheet 3 tightly from the top, which can improve the shock and vibration resistance of the whole machine.

[0022] like Figure 6 As shown, in some embodiments, for heat sources with power exceeding 10W (heat source 11), the assembly gap between the heat source and the thermally conductive copper sheet 1 is 0mm, and high thermal conductivity silicone grease is used during assembly; for heat sources with power not exceeding 10W (heat source 2 12, heat source 3 13, heat source 4 14, heat source 5 15), the assembly gap between the heat source and the thermally conductive copper sheet 1 is 0.7mm, and a 1mm high thermal conductivity silicone pad is used during assembly with a compression of 30%. This design fully ensures contact between each heat source and the thermally conductive copper sheet 1, avoiding poor contact between individual heat sources and the thermally conductive copper sheet 1 due to machining errors. Except for the height of the thermally conductive boss, the height of the thermally conductive copper sheet 1 is 2mm, which ensures no deformation during soldering and minimizes structural weight.

[0023] In some embodiments, the thickness of the hot-end heat-conducting copper sheet 1 is 2mm, which ensures that no deformation occurs during soldering and also minimizes the structural weight.

[0024] In some embodiments, the thickness of the cold-end heat-conducting copper sheet 3 is 2mm, which ensures that no deformation occurs during soldering and also minimizes the structural weight.

[0025] In some embodiments, the through hole 9 is formed into a rectangle, and the side length of each side of the through hole 9 is 2mm longer than the side length of each side of the heat dissipation fin 4. In some embodiments, the design of the heat dissipation fins 4 is mainly determined by the air volume, air pressure and air outlet width of the cooling fan. The heat dissipation simulation determines that the combination of the heat dissipation fins 4 and the cooling fan meets the heat dissipation requirements. The external air duct should be configured with a corresponding structure to maximize the use of air force to blow out the heat and prevent the air from being lost from the side.

[0026] During operation, heat from multiple heat sources 8 is collected at the hot end of the heat sink copper plate, and then conducted through the heat-conducting copper pipe 2 to the cold end of the heat-conducting copper plate 3 located outside the outer casing 5, and then transferred to the heat sink fins 4. The heat on the heat sink fins 4 is then carried away by the airflow from the vortex fan 6.

[0027] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An air-cooled heat dissipation structure, characterized in that, include: Hot-end heat-conducting copper sheet; The lower surface of the hot-end heat-conducting copper sheet is connected to multiple heat sources; The hot-end heat-conducting copper sheet is placed inside the outer casing of the product to be cooled. Multiple heat-conducting copper pipes; The first end of multiple heat-conducting copper pipes is connected to the upper surface of the heat-conducting copper sheet at the hot end; Cold end heat-conducting copper sheet; the outer shell has through holes, the cold end heat-conducting copper sheet is installed above the through holes, and the second ends of multiple heat-conducting copper tubes pass through the through holes and are connected to the lower surface of the cold end heat-conducting copper sheet; Heat dissipation fins; heat dissipation fins are installed on the upper surface of the cold-end heat-conducting copper sheet; Vortex fan; the vortex fan is mounted on the housing, and the air outlet of the vortex fan acts on the heat dissipation fins.

2. The air-cooled heat dissipation structure according to claim 1, characterized in that, Multiple heat-conducting copper pipes are arranged side by side. The first and second ends of the heat-conducting copper pipes are both horizontally positioned. The second end of the heat-conducting copper pipe is positioned at a higher height than the first end. The first and second ends of the heat-conducting copper pipes are connected by a connecting part.

3. The air-cooled heat dissipation structure according to claim 1, characterized in that, A mounting groove is provided at the edge of the through hole, and a heat-insulating and conductive rubber strip is installed in the mounting groove. The cold-end heat-conducting copper sheet is installed on the heat-insulating and conductive rubber strip.

4. The air-cooled heat dissipation structure according to claim 1, characterized in that, An air duct cover is installed on top of the heat dissipation fins. The air duct cover is U-shaped and has flange plates on both sides. The air duct cover is connected to the outer shell through the flange plates.

5. The air-cooled heat dissipation structure according to claim 1, characterized in that, For heat sources with a power exceeding 10W, the assembly gap between the heat source and the thermally conductive copper sheet at the hot end is 0mm, and high thermal conductivity silicone grease is applied during assembly. For heat sources with a power not exceeding 10W, the assembly gap between the heat source and the thermally conductive copper sheet at the hot end is 0.7mm, and a 1mm high thermal conductivity silicone pad is applied during assembly with a compression of 30%.

6. The air-cooled heat dissipation structure according to claim 1, characterized in that, The thickness of the thermally conductive copper sheet at the hot end is 2mm.

7. The air-cooled heat dissipation structure according to claim 1, characterized in that, The thickness of the cold-end heat-conducting copper sheet is 2mm.

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