An air-cooled heat sink

Abstract

The utility model discloses a kind of air-cooled radiators, including main box, the rear portion of the main box is equipped with multiple radiating fans;Multiple heat exchange grooves are formed on the inner side wall of the left and right two inner side plate bodies of the main box, and an inner horizontal fixed plate is fixed on the inner side wall surface of the two inner side plate bodies, the inner horizontal fixed plate covers all heat exchange grooves on the corresponding inner side plate body and separates all heat exchange grooves into heat exchange cavities;A heat dissipation assembly is fixed on the inner horizontal fixed plate corresponding to the heat exchange cavity, and the heat dissipation assembly is communicated with the corresponding heat exchange cavity;It can absorb heat and expand by refrigerant, quickly adsorb the heat of electronic components on control circuit board, and cool down by blowing of radiating fan, so as to quickly cool down electronic components, with good cooling effect, rapid cooling and good effect.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and more specifically to an air-cooled radiator. Background Technology

[0002] In some existing electrical devices, the control motherboards have electronic components that get very hot during operation and require timely heat dissipation. The current method is to use internal cooling fans for cooling, but the air cooling method has limited heat dissipation effect and cannot quickly reduce the temperature of electronic components. The cooling effect is not ideal, especially for high-power electronic components, whose heating rate is much higher than their cooling rate, thus preventing them from starting to cool down. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an air-cooled heat sink that can absorb heat from electronic components on the control circuit board by the expansion of the refrigerant, and then cool the electronic components by blowing air through the cooling fan. It has a good cooling effect, is fast and effective.

[0004] The solution of this utility model to the aforementioned technical problem is: A wind-cooled radiator includes a main housing, and a plurality of cooling fans are installed at the rear of the main housing; Multiple heat exchange grooves are formed on the inner walls of the left and right inner side plates of the main box. An inner horizontal fixing plate is fixed on the inner wall of the two inner side plates. The inner horizontal fixing plate covers all the heat exchange grooves on the corresponding inner side plates and divides all the heat exchange grooves into heat exchange chambers. A heat dissipation assembly is fixed on the inner horizontal fixed plate corresponding to the heat exchange cavity, and the heat dissipation assembly is in communication with the corresponding heat exchange cavity. The front fixed front panel of the main housing has a central through groove formed in the middle. The central through groove faces all heat dissipation components between the two inner side panels, and all heat dissipation fans face the central through groove.

[0005] The heat dissipation component is filled with liquid refrigerant.

[0006] The liquid level of the refrigerant reaches half the height of the heat dissipation component.

[0007] The heat dissipation assembly includes two horizontal tubes extending left and right at the top and bottom. The two ends of multiple vertically extending flat tubes are welded and fixed to the two horizontal tubes. One end of the flat tube is connected to the corresponding horizontal tube. A heat dissipation fin with a wavy bend is welded and fixed between each pair of adjacent flat tubes.

[0008] One end of each of the two transverse tubes is formed with an end plate, and the other end is welded and fixed to the inner wall of the corresponding inner horizontal fixed plate and communicates with the through hole formed on the corresponding inner horizontal fixed plate. The through hole communicates with the corresponding heat exchange cavity.

[0009] The main body has the following structure: the top of the two inner side panels is fixed with the same upper fixing plate; an inner bottom plate is fixed between the lower parts of the two inner side panels; the bottom of the two inner side panels is fixed with the same bottom plate; the rear wall panel is fixed on the rear wall surface of the upper fixing plate and the rear wall surface of the bottom plate; the rear wall surfaces of the two inner side panels and the inner bottom plate are pressed against the rear wall surface of the rear wall panel; multiple air blowing holes are formed on the rear wall panel; multiple cooling fans are fixed on the rear wall panel; the air inlets of the cooling fans face the air blowing holes; a rear cover is fixed to the rear part of the rear wall panel; and all cooling fans are located in the rear cover. The front ends of the upper fixing plate, the bottom plate, and the two inner side plates are fixed to the same front end plate.

[0010] The rear wall panel of the rear cover is formed with multiple air outlet holes, which are aligned with the air outlet of the cooling fan. The air outlet is composed of multiple arc-shaped through holes.

[0011] Two inner side plates extend from the left and right sides of the rear wall plate, the left and right sides of the upper fixed plate, the left and right sides of the bottom plate, and the left and right sides of the front plate. The two outer side plates press against the side walls of the rear wall plate, upper fixed plate, bottom plate, and front plate on the corresponding side and are fixed with bolts. An installation cavity is formed between the outer side plates and the corresponding inner side plates and the parts of the rear wall plate, upper fixed plate, bottom plate, and front plate that extend from the inner side plates. A control circuit board is provided in the installation cavity. The control circuit board is fixed on the inner side plate and is located on the outer side wall of the inner side plate at the corresponding heat exchange cavity.

[0012] Multiple waist-shaped protrusions are formed on the outer wall from the middle to the rear of the inner side plate on the left side. All waist-shaped protrusions fit onto the racetrack-shaped heat exchange section. A waist-shaped heat exchange groove is formed on the inner wall of the inner side plate corresponding to the racetrack-shaped heat exchange section. The inner wall surface of the waist-shaped heat exchange groove is formed with multiple inwardly extending protrusions. All protrusions are evenly distributed on the inner wall surface of the waist-shaped heat exchange groove. The corresponding protrusions in the vertical direction are arranged vertically in a row, and all protrusions form multiple rows. The corresponding protrusions in the horizontal direction are arranged horizontally in a row, and all protrusions form multiple rows. A horizontal groove is formed between each two adjacent rows of protrusions, and a vertical groove is formed between each two adjacent rows of protrusions. The waist-shaped heat exchange groove has a vertically extending elongated protrusion below the middle part and a cubic protrusion above the middle part, which is one-third the size of the lower elongated protrusion. The upper horizontal tube of the heat dissipation component is located at the upper part of the waist-shaped heat exchange groove, and the lower horizontal tube is located at the lower part of the waist-shaped heat exchange groove.

[0013] The outstanding effect of this utility model is: Compared with existing technologies, it can rapidly absorb the heat of electronic components on the control circuit board by absorbing heat and expanding the refrigerant, and then cool down the electronic components by blowing air through the cooling fan. It has a good cooling effect, is fast and effective. Attached Figure Description

[0014] Figure 1 This is a partial structural schematic diagram of the present invention; Figure 2 This is a partial structural diagram of the angle-changing part of this utility model; Figure 3 This is a partial sectional view of the present invention; Figure 4 This is a partial cross-sectional view of the present invention from a different angle; Figure 5 This is a partial structural diagram of the present invention with the front end plate and outer side plate removed; Figure 6 This is a partial structural diagram of the inner side panel on the left side of this utility model without the inner horizontal fixing plate and other components. Figure 7 yes Figure 6 A schematic diagram of the local structure from a different angle; Figure 8 This is a partial structural diagram of the inner side panel on the right side of this utility model without the inner horizontal fixing plate and other components. Figure 9 yes Figure 8 A schematic diagram of the local structure from a different angle; Figure 10 This is a partial structural diagram of the inner panel on the left. Figure 11 yes Figure 10 A schematic diagram of the local structure from a different angle; Figure 12 This is a partial structural diagram of the inner panel on the right side; Figure 13 yes Figure 11 A magnified view of a portion of the image. Detailed Implementation

[0015] For example, see below. Figures 1 to 13As shown, an air-cooled radiator includes a main housing 10, and a plurality of cooling fans 20 are installed at the rear of the main housing 10. Multiple heat exchange grooves 31 are formed on the inner walls of the left and right inner side plates 30 of the main box body 10. Rectangular frame portions are formed on the inner walls of the four sides of the two inner side plates 30. The inner horizontal fixing plate 32 is inserted into the rectangular frame portion, and its outer side wall is welded and fixed to the inner side wall of the rectangular frame portion. The corresponding wall surface of the inner horizontal fixing plate 32 presses against the inner side wall of the inner side plate 30 and covers all the heat exchange grooves 31 on the corresponding inner side plate 30, and divides all the heat exchange grooves 31 into heat exchange chambers 33. A heat dissipation assembly 40 is fixed on the inner horizontal fixing plate 32 corresponding to the heat exchange cavity 33, and the heat dissipation assembly 40 communicates with the corresponding heat exchange cavity 33. The front end plate 11 fixed at the front of the main housing 10 has a central through groove 12 formed in the middle. The central through groove 12 faces all the heat dissipation components 40 between the two inner side plates 30, and all the heat dissipation fans 20 face the central through groove 12.

[0016] Furthermore, both the heat dissipation component 40 and the corresponding heat exchange chamber 33 are filled with refrigerant liquid.

[0017] The liquid level of the refrigerant reaches one-third to one-half the height of the heat dissipation component 40 and the corresponding heat exchange chamber 33.

[0018] The heat dissipation assembly 40 includes two horizontal tubes 41 extending left and right at the top and bottom. Both ends of a plurality of vertically extending flat tubes 42 (microchannel flat tubes are used in this embodiment, generally microchannel aluminum flat tubes) are welded and fixed to the two horizontal tubes 41. One end of the flat tube 42 is connected to the corresponding horizontal tube 41. A heat dissipation fin 43 extending in a wavy shape is welded and fixed between each two adjacent flat tubes 42.

[0019] Each heat dissipation component 40 has a liquid filling connector on the middle side plate of a horizontal tube 41, through which liquid refrigerant can be added.

[0020] One end of each of the two transverse tubes 41 is formed with an end plate, and the other end is welded and fixed to the inner wall of the corresponding inner horizontal fixed plate 32 and communicates with the through hole formed on the corresponding inner horizontal fixed plate 32. The through hole communicates with the corresponding heat exchange chamber 33.

[0021] The main housing 10 has the following structure: the top of the two inner side panels 30 is fixed with the same upper fixing plate; an inner bottom plate 14 is fixed between the lower parts of the two inner side panels 30; the bottom of the two inner side panels 30 is fixed with the same bottom plate; the rear wall panel is fixed on the rear wall surface of the upper fixing plate and the rear wall surface of the bottom plate; the rear wall surfaces of the two inner side panels 30 and the inner bottom plate 14 are pressed against the rear wall surface of the rear wall panel; multiple air blowing holes 15 are formed on the rear wall panel; multiple cooling fans 20 are fixed on the rear wall panel; the air inlets of the cooling fans 20 face the air blowing holes 15; a rear cover 16 is fixed at the rear of the rear wall panel; and all the cooling fans 20 are located in the rear cover 16. The front ends of the upper fixing plate, the bottom plate, and the two inner side plates 30 are fixed to the same front end plate 11.

[0022] The rear wall panel of the rear cover 16 has a plurality of air outlet holes 161 formed thereon, and the air outlet holes 161 face the air outlet of the cooling fan 20. The air outlet 161 is composed of multiple arc-shaped through holes. This structure prevents large external objects from entering through the air outlet 161.

[0023] Furthermore, two inner side plates 30 extend from the left and right sides of the rear wall panel, the left and right sides of the upper fixing plate, the left and right sides of the bottom plate, and the left and right sides of the front end plate 11. Two outer side plates 17 press against the side walls of the corresponding rear wall panel, upper fixing plate, bottom plate, and front end plate 11 and are fixed with bolts. An installation cavity is formed between the outer side plate 17 and the corresponding inner side plate 30, and the portions of the rear wall panel, upper fixing plate, bottom plate, and front end plate 11 extending from these inner side plates 30. A control circuit board is installed in the installation cavity and fixed to the inner side plate 30, located on the outer side wall of the inner side plate 30 at the corresponding heat exchange cavity 33. The outer wall surface of the electronic components of the control circuit board is tightly attached to the outer wall surface of the corresponding inner side plate 30 using thermally conductive adhesive (which is insulating adhesive).

[0024] Multiple waist-shaped protrusions 34 are formed on the outer wall from the middle to the rear of the inner side plate 30 on the left side. All waist-shaped protrusions 34 are fitted onto a racetrack-shaped heat exchange part 35. A waist-shaped heat exchange groove 31 is formed on the inner wall of the inner side plate 30 corresponding to the racetrack-shaped heat exchange part 35. The racetrack-shaped heat exchange part 35 increases its heat dissipation wall surface. The outer wall surface of the electronic components of the control circuit board that are fixed here is bonded and fixed to the racetrack-shaped heat exchange part 35 with thermally conductive adhesive, thereby improving the heat conduction effect.

[0025] Furthermore, the inner wall surface of the waist-shaped heat exchange groove 31 is formed with a plurality of inwardly extending protrusions 36. All protrusions 36 are evenly distributed on the entire inner wall surface of the waist-shaped heat exchange groove 31. The corresponding protrusions 36 in the vertical direction are arranged vertically in a row, and all protrusions 36 form multiple rows. The corresponding protrusions 36 in the horizontal direction are arranged horizontally in a row, and all protrusions 36 form multiple rows. A horizontal groove is formed between each two adjacent rows of protrusions 36, and a vertical groove is formed between each two adjacent rows of protrusions 36. In the waist-shaped heat exchange groove 31, the lower part of the protrusion 36 is a vertically extending elongated protrusion, and the upper part is a cubic protrusion, which is one-third the size of the lower elongated protrusion. Here, the upper horizontal tube 41 of the heat dissipation component 40 is located at the upper part of the waist-shaped heat exchange groove 31, and the lower horizontal tube 41 is located at the lower part of the waist-shaped heat exchange groove 31.

[0026] This layout design results in fewer flow channels between the lower protrusions 36 than between the upper protrusions 36, allowing the refrigerant to flow upwards smoothly when it absorbs heat and vaporizes. The upper part has more flow channels, which makes the vaporized refrigerant more evenly distributed in the heat exchange groove 31, ensuring the heat exchange effect.

[0027] Furthermore, a rectangular heat exchange groove 31 is formed on the upper and lower parts of the inner wall of the front part of the inner side plate 30 on the left side. A plurality of second protrusions 37 are formed on the inner wall surface of the heat exchange groove 31, and all the second protrusions 37 are evenly distributed throughout the rectangular heat exchange groove 31. Multiple rectangular heat exchange grooves 31 are formed on the entire inner wall surface of the inner side plate 30 on the right side. Multiple second protrusions 37 are also formed on the inner wall surface of all heat exchange grooves 31. All second protrusions 37 are evenly distributed on the entire inner wall surface of the corresponding heat exchange grooves 31. In all the rectangular heat exchange grooves 31, the corresponding second protrusions 37 in the vertical direction of each heat exchange groove 31 are arranged vertically in a row, and all the second protrusions 37 form multiple rows. The corresponding second protrusions 37 in the horizontal direction are arranged horizontally in a row, and all the second protrusions 37 form multiple rows. A horizontal groove is formed between each two adjacent rows of second protrusions 37, and a vertical groove is formed between each two adjacent rows of second protrusions 37. In the rectangular heat exchange groove 31, the second protrusion 37 below the middle part is a vertically extending elongated protrusion, and the part above the middle part is a cube-shaped protrusion, the size of which is one-third of the size of the lower elongated protrusion. Here, the upper horizontal tube 41 of the heat dissipation component 40 is located at the upper part of the waist-shaped heat exchange groove 31, and the lower horizontal tube 41 is located at the lower part of the waist-shaped heat exchange groove 31.

[0028] This structure has the same effect as the protrusion 36 mentioned above, and will not be described in detail here.

[0029] To elaborate further, the heat dissipation component 40 forms an angle of 60 to 80° with the air inlet end of the horizontal plane, while in this embodiment it is 70°. This tilt angle allows for a longer length of the heat dissipation component 40 that can be installed when the airflow is flowing and exchanging heat with it, compared to when it is vertically set, thereby increasing the heat exchange area and improving its heat dissipation effect.

[0030] Furthermore, the second protrusions 37 on the left and right sides of the middle to upper part of the rectangular heat exchange groove 31 are cylindrical, and their cross-sectional area is larger than that of the surrounding second protrusions 37. The corresponding wall surface of the adjacent and close second protrusions 37 is an arc-shaped wall surface. This structure enhances the turbulent flow effect of the refrigerant vaporization and upward flow.

[0031] In this embodiment, the control circuit board is fixedly connected to the outer wall of the corresponding inner plate 30 by bolts, and the corresponding wall surfaces of the electronic components on it are bonded and fixed to the outer wall of the corresponding inner plate 30 by thermally conductive adhesive. In use, when the electronic components of the control circuit board are running, they generate heat. The heat is conducted through the inner plate 30 to the refrigerant liquid in the corresponding heat exchange groove 31, causing it to vaporize. The vaporized refrigerant flows upward and fills the entire heat exchange groove 31. At the same time, some of the vaporized refrigerant fills the upper horizontal tube 41 along the corresponding flat tube 42. At this time, the cooling fan 20 draws in air, allowing external air to enter the heat dissipation component 40 and the inner plate 30 between the two inner plates 30, where it exchanges heat with them, causing the refrigerant inside to liquefy and fall. The gas after heat exchange is discharged from the air outlet 161.

[0032] The liquefied refrigerant absorbs heat from the electronic components, vaporizes again, and is then cooled by the cooling fan 20, liquefying and descending again. This process repeats, thereby achieving the effect of cooling the electronic components on the control circuit board. It has a good cooling effect and high heat exchange efficiency.

[0033] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model, and the patent protection scope of the present utility model should be defined by the claims.

Claims

1. A wind-cooled radiator, comprising a main housing (10), characterized in that: Multiple cooling fans (20) are installed at the rear of the main housing (10). Multiple heat exchange grooves (31) are formed on the inner walls of the left and right inner side plates (30) of the main box (10). An inner horizontal fixing plate (32) is fixed on the inner wall of the two inner side plates (30). The inner horizontal fixing plate (32) covers all the heat exchange grooves (31) on the corresponding inner side plates (30) and separates all the heat exchange grooves (31) into heat exchange cavities (33). A heat dissipation assembly (40) is fixed on the inner horizontal fixing plate (32) corresponding to the heat exchange cavity (33), and the heat dissipation assembly (40) is connected to the corresponding heat exchange cavity (33); The front fixed front end plate (11) of the main housing (10) has a central through groove (12) formed in the middle. The central through groove (12) faces all heat dissipation components (40) between the two inner side plates (30), and all heat dissipation fans (20) face the central through groove (12).

2. The air-cooled radiator according to claim 1, characterized in that: The heat dissipation component (40) is filled with liquid refrigerant.

3. The air-cooled radiator according to claim 2, characterized in that: The liquid level of the refrigerant reaches one-third to half the height of the heat dissipation component (40).

4. The air-cooled radiator according to claim 1, characterized in that: The heat dissipation assembly (40) includes two horizontal tubes (41) extending left and right at the top and bottom. The two ends of a plurality of vertically extending flat tubes (42) are welded and fixed to the two horizontal tubes (41). One end of the flat tube (42) is connected to the corresponding horizontal tube (41). A heat dissipation fin (43) extending in a wave-shaped bend is welded and fixed between each two adjacent flat tubes (42).

5. A wind-cooled radiator according to claim 4, characterized in that: Two transverse tubes (41) have end plates formed at one end and are welded and fixed to the inner wall of the corresponding inner horizontal fixing plate (32) at the other end, and communicate with the through hole formed on the corresponding inner horizontal fixing plate (32). The through hole communicates with the corresponding heat exchange chamber (33).

6. The air-cooled radiator according to claim 1, characterized in that: The structure of the main box (10) is as follows: the top of the two inner side plates (30) is fixed with the same upper fixing plate, the lower part of the two inner side plates (30) is fixed with an inner bottom plate (14), the bottom end of the two inner side plates (30) is fixed with the same bottom plate, the rear wall plate is fixed on the rear wall surface of the upper fixing plate and the rear wall surface of the bottom plate, the rear wall surfaces of the two inner side plates (30) and the inner bottom plate (14) are pressed against the rear wall surface of the rear wall plate, a plurality of air blowing holes (15) are formed on the rear wall plate, a plurality of heat dissipation fans (20) are fixed on the rear wall plate, the air inlet of the heat dissipation fan (20) faces the air blowing hole (15), the rear part of the rear wall plate is fixed with a rear cover (16), and all the heat dissipation fans (20) are located in the rear cover (16). The front ends of the upper fixing plate, the bottom plate and the two inner side plates (30) are fixed to the same front end plate (11).

7. A wind-cooled radiator according to claim 6, characterized in that: The rear wall panel of the rear cover (16) is formed with a plurality of air outlet holes (161), which are opposite to the air outlet of the cooling fan (20). The air outlet (161) is composed of multiple arc-shaped through holes.

8. A wind-cooled radiator according to claim 6, characterized in that: Two inner plates (30) extend from the left and right sides of the rear wall plate, the left and right sides of the upper fixed plate, the left and right sides of the bottom plate, and the left and right sides of the front plate (11). Two outer plates (17) press against the side walls of the rear wall plate, upper fixed plate, bottom plate, and front plate (11) on the corresponding side and are fixed with bolts. An installation cavity is formed between the outer plates (17) and the corresponding inner plates (30) and the parts of the rear wall plate, upper fixed plate, bottom plate, and front plate (11) that extend from the inner plates (30). A control circuit board is provided in the installation cavity. The control circuit board is fixed on the inner plate (30) and is located on the outer wall of the inner plate (30) at the corresponding heat exchange cavity (33).

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