Radiator and ultraviolet LED light source using the radiator

Abstract

The present invention relates to a radiator and an ultraviolet LED light source using the radiator, wherein the radiator comprises: a water cooling tube, a surface mounted ultraviolet LED module; a partition plate, installed inside the water cooling tube, dividing the water cooling tube into a double pipe for liquid inlet and liquid outlet respectively; a T-shaped heat pipe, installed on the outer wall of the water cooling tube, combined with the double pipe water cooling heat dissipation; wherein the ultraviolet LED light source comprises an ultraviolet LED module and a radiator, the ultraviolet LED module is mounted on the four sides of the water cooling tube, and the bottom surface of the ultraviolet LED module is in close contact with the T-shaped heat pipe. Compared with the prior art, the present invention has the advantages of high heat dissipation efficiency, good irradiance uniformity in the axial and circumferential directions, etc.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor lighting, and in particular to a radiator and an ultraviolet LED light source using the radiator. Background Art

[0002] In recent years, the application of UV LED light sources in the fields of photocuring, photosynthesis, disinfection and sterilization has become more and more extensive. Compared with traditional UV light sources, UV LED light sources have the advantages of energy saving and high efficiency, green environmental protection, small size, long life, and flexible use. Irradiance is an important parameter to measure the performance of UV equipment. In many application fields, UV light sources are required to have sufficient irradiance and irradiation uniformity. For UV LED light sources, to increase the power density and irradiance of the light source, it is necessary to improve its heat dissipation efficiency. At present, the commonly used heat dissipation methods for UV LED light sources are fin heat dissipation and water cooling. The structure of fin heat dissipation is simple, but the heat dissipation efficiency is low; water cooling heat dissipation has high efficiency, but the required equipment structure is complex and the volume is large, which will bring inconvenience in actual use. Moreover, with the continuous advancement of UV curing in industrial applications, the packaging power of UV LED modules is also increasing, generally exceeding 100W / cm 2 , even reaching 300W / cm 2 The above greatly increases the requirements for the radiator. Ordinary water cooling cannot fully meet the use requirements of such high power density UV LED light sources.

[0003] After searching, Chinese patent publication number CN202452450U discloses a heat dissipation module for UV curing molding machines, which uses U-shaped heat pipes and fins to dissipate heat from UV LED modules. The heat dissipation module uses heat pipes for heat dissipation, has a simple structure, and consumes no energy, but the heat dissipation efficiency is still not high enough to dissipate heat from high power density UV LED light sources.

[0004] Chinese patent publication number CN105972448A discloses a water-cooled LED lamp, in which LED light strips are evenly installed on the outside of a column, and heat dissipation water pipes are laid on both sides of the LED light strip. The water-cooled LED lamp has good circumferential and axial illumination, but because the heat dissipation water pipes are installed on both sides of the LED, the heat cannot be well discharged, and the heat dissipation efficiency is still not high.

[0005] The heat dissipation efficiency of current ultraviolet LED light sources is still not high enough, thus limiting the further improvement of the radiation power density of the light source. Summary of the invention

[0006] The purpose of the present invention is to provide a radiator and an ultraviolet LED light source using the radiator in order to overcome the defects of the above-mentioned prior art, combining the heat pipe and water cooling. The heat pipe quickly extracts the heat of the ultraviolet LED module through the phase change principle and transfers it to the condensation section. The heat is quickly taken away by water cooling in the condensation section, which can greatly improve the heat dissipation efficiency.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] According to one aspect of the present invention, there is provided a heat sink, comprising:

[0009] Water cooling tube, surface mounted UV LED module;

[0010] A partition plate is installed inside the water cooling pipe to divide the water cooling pipe into two pipes for liquid inlet and liquid outlet respectively;

[0011] T-shaped heat pipes are installed on the outer wall of the water-cooling pipe and combined with double-pipe water-cooling heat dissipation.

[0012] As a preferred technical solution, the water cooling pipe is a columnar structure, and the partition is arranged on the middle diagonal line of the columnar structure.

[0013] As a preferred technical solution, the water-cooling pipe is closed at one end, and a gap is provided between the closed end and the partition for connecting the liquid inlet pipe and the liquid outlet pipe, and a water inlet channel and a water outlet channel are provided at the non-closed end, wherein the water inlet channel is connected to the liquid inlet pipe, and the water outlet channel is connected to the liquid outlet pipe, wherein a cylindrical metal interface is provided.

[0014] As a preferred technical solution, the four sides of the inner wall of the water-cooling tube are respectively provided with recessed holes for embedding the T-shaped heat pipe, and potting glue is provided at the recessed holes for sealing to prevent water leakage.

[0015] As a preferred technical solution, the connection portion between the T-shaped heat pipe and the water cooling pipe is in the shape of a quadrangular cone or a truncated cone.

[0016] As a preferred technical solution, the radiator further comprises a heat pipe pressing plate, which presses the T-shaped heat pipe and is fixed on the water cooling pipe.

[0017] As a preferred technical solution, the four side corners of the cross-section of the water-cooling tube are provided with thickened layers, and a through hole parallel to the axis of the water-cooling tube is opened in the center of each thickened layer. Grooves for accommodating wires are provided between the four corners of the water-cooling tube and the corresponding through holes.

[0018] According to another aspect of the present invention, there is provided an ultraviolet LED light source using the heat sink, comprising an ultraviolet LED module and a heat sink, wherein the ultraviolet LED module is mounted on four sides of a water cooling tube, and the bottom surface of the ultraviolet LED module is in close contact with the T-shaped heat pipe.

[0019] As a preferred technical solution, the UV LED modules on adjacent surfaces are installed in a staggered manner, and the UV LED modules on opposite surfaces are installed at the same position to avoid the screws from intersecting in the water cooling tube.

[0020] As a preferred technical solution, the packaging power density of the ultraviolet LED module is not less than 100W / cm 2 The ultraviolet LED module includes an ultraviolet LED chip, an electrode and a copper substrate. The four corners of the copper substrate are provided with screw holes for screwing in screws. The screws are screwed into the copper substrate, the heat pipe pressing plate and the water cooling pipe in sequence, so that the ultraviolet LED module is close to the bottom of the T-shaped heat pipe and fixed on the water cooling pipe.

[0021] Compared with the prior art, the present invention adopts a heat dissipation method combining heat pipes and water cooling. The T-shaped heat pipe quickly conducts the heat of the light source module to the condensation section through the phase change principle, and then the water flow takes away the heat transferred to the condensation section, which greatly improves the heat dissipation efficiency. Therefore, the lamp of the present invention has the advantages of high heat dissipation efficiency and good irradiance uniformity in the axial and circumferential directions. It is suitable for high-power density ultraviolet curing systems and can be used in application fields that require high-intensity ultraviolet radiation, such as light curing, photosynthesis, disinfection and sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional schematic diagram of the ultraviolet LED light source of the present invention;

[0023] Figure 2 It is an overall schematic diagram of the ultraviolet LED light source of the present invention;

[0024] Figure 3 It is a top view schematic diagram of the ultraviolet LED light source of the present invention;

[0025] Figure 4 It is a schematic diagram of a light source module of the ultraviolet LED light source of the present invention;

[0026] Figure 5 Schematic diagram of a T-shaped heat pipe with a quadrangular pyramid bottom according to the present invention;

[0027] Figure 6 A schematic diagram of a T-shaped heat pipe with a truncated cone bottom according to the present invention;

[0028] Figure 7 This is a schematic diagram of a heat pipe pressing plate of the present invention in which the groove is in the shape of a quadrangular pyramid;

[0029] Figure 8 It is a schematic diagram of a heat pipe pressing plate of the present invention in which the groove is in the shape of a truncated cone.

[0030] Among them, 1. UV LED module, 2. screws, 3. through holes, 4. grooves, 5. heat pipe pressing plate, 6. T-shaped heat pipe, 7. water inlet pipe, 8. partition, 9. water outlet pipe, 10. water cooling pipe, 11. thickening layer, 12. water inlet channel, 13. water outlet channel, 14. UV LED chip, 15. electrodes, 16. copper substrate, 17. screw holes, 18. heat pipe wall, and 19. liquid absorption core. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] like Figure 1 As shown, a UV LED light source using a T-shaped heat pipe and a double-tube water-cooled radiator includes a plurality of UV LED modules 1, a water-cooling tube 10, a T-shaped heat pipe 6, a heat pipe pressing plate 5, and screws 2; the radiator includes a T-shaped heat pipe 6, a heat pipe pressing plate 5, and a water-cooling tube 10, the protruding portion of the T-shaped heat pipe 6 is embedded in the water-cooling tube 10 through an opening on the side of the water-cooling tube 10, and the heat pipe pressing plate 5 is used to assist in fixing the T-shaped heat pipe 6, and the screws 2 are screwed in turn into the UV LED module 1, the heat pipe pressing plate 5, and the water-cooling tube 10, so that the UV LED module 1 is close to the bottom of the T-shaped heat pipe 6 and fixed on the water-cooling tube 10; the T-shaped heat pipe 6 quickly conducts the heat of the UV LED module 1 and transfers it to its condensation section, the condensation section is embedded in the water-cooling tube, and the heat of the condensation section is quickly taken away by the water flow, and this structure has a very high heat dissipation efficiency.

[0033] The present invention improves the heat dissipation effect of the radiator through a structure combining a T-shaped heat pipe 6 and a double-tube water-cooled heat dissipation, ensures the normal operation of a high-power density ultraviolet LED light source module, and thereby obtains an ultraviolet LED lamp with high radiation intensity and uniform irradiance in the axial and circumferential directions of the lamp, meeting industrial needs in the fields of photocuring, photosynthesis, disinfection and sterilization.

[0034] The water-cooling pipe 10 is divided into an inlet pipe 7 and an outlet pipe 9, which are separated by a partition 8 in the middle. There are openings on the four sides. The protruding part of the T-shaped heat pipe 6 is embedded in the water-cooling pipe through the opening and sealed with a potting glue to prevent water leakage. The four side corners of the cross section of the water-cooling pipe 10 have thickened layers 11. The center of each thickened layer has a through hole 3 parallel to the axis of the water-cooling pipe for screwing in a screw 2. There is a groove 4 between the four edges and each through hole 3 for placing the wire; the starting end of the water-cooling pipe 10 has a water inlet channel 12 and a water outlet channel 13 for connecting the water inlet pipe and the water outlet pipe. The end is closed and there is a certain gap between it and the partition.

[0035] like Figure 2 As shown, multiple UV LED modules 1 are installed on four sides of the water cooling tube 10. The UV LED modules 1 on opposite sides are fixed at the same position, and the UV LED modules 1 on adjacent sides are fixed at staggered positions to prevent the screws 2 from intersecting in the water cooling tube. The side length of the cross section of the entire lamp is 40 mm, and the side length of the UV LED module 1 is slightly shorter than the side length of the cross section.

[0036] like Figure 4 As shown, the ultraviolet LED module 1 includes an ultraviolet LED chip 14 , an electrode 15 and a copper substrate 16 , and screw holes 17 are provided on the four corners of the copper substrate 16 for screwing in the screws 2 .

[0037] like Figure 5 and 6 As shown, the bottom of the T-shaped heat pipe 6 is in the shape of a quadrangular cone or a truncated cone, and is composed of a tube wall 18 and a liquid absorption core 19.

[0038] like Figure 7 and 8 As shown, the groove of the heat pipe pressing plate 5 is in the shape of a quadrangular cone or a truncated cone.

[0039] This UV LED light source can be used as a UV curing lamp for the inner wall of oil tanks. Because it has good irradiance uniformity in the axial and circumferential directions and can achieve high irradiance, it is suitable for photocuring of the inner wall of cylindrical oil tanks. When applying the coating for the first time, this curing lamp can be used on the coating coating machine to achieve coating and curing of the coating, which greatly improves the coating efficiency; during the maintenance and overhaul of the oil tank, this lamp can also be used as a handheld curing lamp, which can be brought into the oil tank by the maintenance worker to apply and cure the coating on the damaged part of the coating, which can also improve the worker's work efficiency.

[0040] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A radiator, characterized in that: include: A water cooling tube (10), a surface mounted ultraviolet LED module (1); A partition (8) is installed inside the water cooling pipe (10) to divide the water cooling pipe (10) into two pipes for liquid inlet and liquid outlet respectively; A T-shaped heat pipe (6) is installed on the outer wall of the water cooling pipe (10) and is combined with double-pipe water cooling and heat dissipation; The water cooling tube (10) is a columnar structure, and the partition (8) is arranged on the middle diagonal line of the columnar structure; the four sides of the inner wall of the water cooling tube (10) are respectively provided with recessed holes for embedding the T-shaped heat pipe (6), and potting glue is arranged at the recessed holes for sealing.

2. A radiator according to claim 1, characterized in that: The water cooling pipe (10) is closed at one end, and a gap for connecting the liquid inlet pipe and the liquid outlet pipe is provided between the closed end and the partition plate, and a water inlet channel (12) and a water outlet channel (13) are provided at the non-closed end, wherein the water inlet channel (12) is connected to the liquid inlet pipe, and the water outlet channel (13) is connected to the liquid outlet pipe.

3. The radiator according to claim 1, characterized in that: The connection portion between the T-shaped heat pipe (6) and the water cooling pipe (10) is in the shape of a quadrangular cone or a truncated cone.

4. The radiator according to claim 1, characterized in that: The radiator also includes a heat pipe pressing plate (5), which presses the T-shaped heat pipe (6) and is fixed on the water cooling pipe (10).

5. The radiator according to claim 1, characterized in that: The four side corners of the cross section of the water-cooling tube (10) are provided with thickened layers (11), and a through hole (3) parallel to the axis of the water-cooling tube (10) is opened at the center of each of the thickened layers (11). A groove (4) for accommodating a wire is provided between the four corners of the water-cooling tube (10) and the corresponding through holes (3).

6. An ultraviolet LED light source using the heat sink according to claim 1, characterized in that: It comprises an ultraviolet LED module (1) and a heat sink, wherein the ultraviolet LED module (1) is mounted on four side surfaces of a water cooling tube (10), and the bottom surface of the ultraviolet LED module (1) is in close contact with a T-shaped heat pipe (6).

7. The ultraviolet LED light source according to claim 6, characterized in that: The ultraviolet LED modules (1) on adjacent surfaces are installed in a staggered manner, and the ultraviolet LED modules (1) on opposite surfaces are installed in the same position.

8. The ultraviolet LED light source according to claim 6, characterized in that: The packaging power density of the ultraviolet LED module (1) is not less than 100 W / cm 2 The ultraviolet LED module (1) comprises an ultraviolet LED chip (14), an electrode (15) and a copper substrate (16). The four corners of the copper substrate (16) are provided with screw holes (17) for screwing in screws (2). The screws (2) are screwed into the copper substrate (16), the heat pipe pressing plate (5) and the water cooling pipe (10) in sequence, so that the ultraviolet LED module (1) is closely attached to the bottom of the T-shaped heat pipe (6) and fixed on the water cooling pipe (10).

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