High-power light source for improving light emitting efficiency of UV-LED (Ultraviolet-Light Emitting Diode)

Abstract

The invention belongs to the technical field of light source lamps, in particular to a high-power light source for improving UV-LED luminous efficiency, and provides the following scheme: the high-power light source comprises a light source shell, a cooling water tank box and a plurality of lamp panels, and further comprises a sealing plate; one end of the light source shell is open, and the cooling water tank box is installed in the light source shell. The lamp panels are installed on the outer wall of the end, facing the opening of the light source shell, of the cooling water tank box, and a plurality of LED lamp beads are arranged on the lamp panels. The sealing plate is arranged at the end, away from the cooling water tank box, of the lamp panel, penetrating holes are formed in the positions, corresponding to the LED lamp beads, of the sealing plate, and the outer wall of the sealing plate is silvery white. The LED lamp beads are directly exposed for use, no blocking loss is caused to the emitted light source, and the silvery white part on the surface of the sealing plate is used for reflecting light, so that the light utilization rate is effectively improved, and the service life of the LED is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of light source lamps, and in particular to a high-power light source for improving the light output efficiency of UV-LEDs. Background Art

[0002] UV-LED surface light source is a semiconductor light-emitting device that directly generates ultraviolet light. It is usually composed of multiple UV-LED lamp beads arranged in different combinations to form multiple rows and columns, emitting light of various shapes.

[0003] Referring to the Chinese patent with patent announcement number CN218379153U, a high-illuminance and high-uniformity direct-type LED surface light source optical structure is disclosed, including an LED lamp bead circuit board, a mixing light cavity side panel, a light emitting surface frame and a light emitting surface diffusion plate. A mixing light cavity side panel is arranged above the LED lamp bead circuit board, a light emitting surface frame is arranged above the mixing light cavity side panel, and a light emitting surface diffusion plate is arranged in the light emitting surface frame; a plurality of LED lamp beads are evenly arranged in the middle of the LED lamp bead circuit board, and a circle of LED lamp beads are unevenly arranged around the LED lamp bead circuit board.

[0004] However, the UV-LED surface light sources commonly used in the existing market have low heat dissipation efficiency and low light output efficiency, which seriously affects the use effect of the light source. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a high-power light source that improves the light extraction efficiency of UV-LED.

[0006] The present invention proposes a high-power light source for improving the light output efficiency of UV-LED, comprising a light source shell, a cooling water trough box and a plurality of lamp boards, and also comprising a sealing plate; one end of the light source shell is open, and the cooling water trough box is installed in the light source shell; the plurality of lamp boards are installed on the outer wall of the end of the cooling water trough box facing the opening of the light source shell, and a plurality of LED lamp beads are arranged on the lamp board; the sealing plate is arranged at an end of the lamp board away from the cooling water trough box, and a perforation is opened at a position corresponding to the LED lamp beads on the sealing plate, and the outer wall of the sealing plate is set to be silver-white.

[0007] Preferably, a mounting hole is reserved on the outer side of the sealing plate, and an external optical lens is detachably connected to the outer side of the sealing plate.

[0008] Preferably, a water trough is provided in the cooling water trough box, and a plurality of vertically distributed through grooves are opened at one end of the cooling water trough box facing the lamp board, and fixed fins are sealed and installed in the through grooves, and a horizontally extending partition is installed in the middle position of the water trough, and a gap is provided between one side of the partition and the inner wall of the water trough, and the part above the partition in the water trough is provided as an upper cavity, and the part below the partition in the water trough is provided as a lower cavity.

[0009] Preferably, the cooling water trough box is opened at one end away from the lamp panel, and a box cover is installed at the open end of the cooling water trough box, and a water inlet pipe and a water outlet pipe are installed on the box cover, and the water inlet pipe and the water outlet pipe are both arranged on a side away from the gap, the water inlet pipe is connected to the upper cavity, and the water outlet pipe is connected to the lower cavity.

[0010] Preferably, a temperature monitoring module is provided at the position of the cooling water trough box facing the lamp board; electric control valves are provided on the outside of the water inlet pipe and the water outlet pipe, and the electric control valves are configured as flow rate socket valves, and the electric control valves are used to adjust the flow rate of the water inlet pipe and the water outlet pipe; swing mechanisms are provided in the upper cavity and the lower cavity, and the swing mechanisms are used to swing up and down to increase the movement of water flow; a central processing unit is installed in the light source shell, and the temperature data on the back of the lamp board is collected and processed through the temperature monitoring module and the central processing unit, and the central processing unit calculates and controls the flow rate of the water inlet pipe and the water outlet pipe according to the current temperature and the preset temperature suitable range, threshold and other key parameters.

[0011] Preferably, the temperature monitoring module is provided with a plurality of temperature sensors;

[0012] The calculation formula for temperature monitoring data is as follows:

[0013]

[0014] Where n is the number of temperature sensors, T i,k is the temperature detected by the ith temperature sensor at time k, w i Assign a corresponding weight to each temperature sensor (and satisfy ).

[0015] Preferably, in order to grasp the temperature change trend in real time, the system also calculates the temperature change rate, and the calculation formula is as follows:

[0016]

[0017] Where, T avg,k-1 is the calculated temperature at the previous moment k-1, and Δt is the time interval between two adjacent temperature measurements.

[0018] Preferably, the calculation formula for controlling the flow rate variation range of the water inlet pipe is as follows:

[0019]

[0020] In the formula, k in is the temperature control coefficient, k in =α|v T,k |+β, α and β can be determined according to system characteristics, ΔT=T avg,k -T avg,k-1 , C sys is the system heat capacity, cw is the specific heat capacity of water, m w is the mass of water that the tank can fully hold, d in is the diameter of the water inlet pipe, P in Inlet pipe inlet pressure, P out is the outlet pressure of the water inlet pipe, ξ in is the inlet pipe resistance coefficient, ρ w is the density of water; where sgn(ΔT) is a sign function, when ΔT>0, sgn(ΔT)=1; when ΔT<0, sgn(ΔT)=-1; when ΔT=0, sgn(ΔT)=0;

[0021] The calculation formula for controlling the flow rate variation range of the outlet pipe is as follows:

[0022]

[0023] In the formula, k out is the temperature control coefficient, k out =α|v T,k |+β, α and β can be determined according to system characteristics, ΔT=T avg,k -T avg,k-1 , C sys is the system heat capacity, c w is the specific heat capacity of water, m w is the mass of water that the tank can fully hold, d out is the outlet pipe diameter, P′ in Outlet pipe inlet pressure, P′ out is the outlet pressure of the water outlet pipe, ξ out is the outlet pipe resistance coefficient, ρ w is the density of water; where sgn(ΔT) is the sign function, when ΔT>0, sgn(ΔT)=1; when ΔT<0, sgn(ΔT)=-1; when ΔT=0, sgn(ΔT)=0.

[0024] Preferably, the swing mechanism is provided with a plurality of movable fins parallel to each other, and an axle rod is fixed at the end of the movable fin, and a fixing hole is opened at a position corresponding to the axle rod on the box cover, and the outer wall of the axle rod is rotatably connected to the inner wall of the fixing hole by a bearing, and the axle rod corresponding to the upper cavity position is arranged at a side position close to the water inlet pipe, and the axle rod corresponding to the lower cavity position is arranged at a side position away from the water outlet pipe; an electromagnetic group is installed at a position of the outer wall of the box cover corresponding to the swing mechanism, and the electromagnetic group is located at a side position of the movable fin away from the axle rod, and the electromagnetic group is arranged on the upper electromagnetic block and the lower electromagnetic block, and the upper electromagnetic block and the lower electromagnetic block are magnetically adsorbed to the movable fins after being energized, and the swing frequency of the movable fins is controlled by the frequency of alternating energization of the upper electromagnetic block and the lower electromagnetic block.

[0025] Preferably, an embedding groove is provided on the movable fin at a position away from the shaft rod, a floating bar is fixed in the embedding groove, and a plurality of guide grooves are provided on the top of the movable fin, and the guide grooves are opened toward the position away from the shaft rod.

[0026] The beneficial effects of the present invention are:

[0027] 1. In the present invention, by setting the above-mentioned sealing plate and the perforations on the sealing plate corresponding to the LED lamp beads, the LED lamp beads are directly leaked out for use without causing blocking loss to the emitted light source, and the silver-white color of the sealing plate surface is used for reflection, thereby effectively improving the light utilization rate; and at the same time, directly leaking the LED lamp beads can reduce the conversion of excessive light sources into heat, and reduce the heat around the LED lamp beads, thereby improving the LED life.

[0028] 2. In the present invention, by setting an external optical lens, under normal circumstances, the sealing plate can be used directly and the LED lamp beads can be leaked out to improve the utilization rate of the light source and reduce the overall heat of the light source. In the environment with flying liquid, dust particles, flying ink, etc., the external optical lens and the sealing plate can be directly installed and used, so that the light source can be used adaptably in different environments to improve the protection effect of the LED.

[0029] 3. In the present invention, through comprehensive analysis of the central processing unit, the heat dissipation and cooling effect of the light source during use and the cooling efficiency are effectively improved, thereby ensuring that the LED maintains a high light output efficiency for a long time and effectively extending the service life of the LED lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a high-power light source proposed by the present invention to improve the light extraction efficiency of UV-LED;

[0031] Figure 2 This is a schematic diagram of the exploded structure of a high-power light source for improving the light extraction efficiency of UV-LEDs proposed by the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of an external light source lens for a high-power light source that improves the light extraction efficiency of UV-LEDs proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the back structure of a cooling water tank box and a box cover of a high-power light source for improving the light extraction efficiency of UV-LEDs proposed by the present invention;

[0034] Figure 5 This is a schematic diagram of the internal structure of a cooling water tank box for a high-power light source for improving the light extraction efficiency of UV-LEDs proposed by the present invention;

[0035] Figure 6A schematic diagram of the distribution structure of fixed fins and movable fins of a high-power light source for improving the light extraction efficiency of UV-LEDs proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of the box cover and movable fin structure of a high-power light source for improving the light extraction efficiency of UV-LEDs proposed by the present invention;

[0037] Figure 8 A schematic diagram of the structure of an active fin of a high-power light source for improving the light extraction efficiency of UV-LEDs proposed by the present invention;

[0038] Fig. 9 This is a schematic diagram of the control module of a high-power light source proposed by the present invention for improving the light extraction efficiency of UV-LEDs.

[0039] In the figure: 1 light source shell, 2 cooling water tank box, 201 upper cavity, 202 lower cavity, 3 lamp board, 301 LED lamp beads, 4 sealing plate, 401 perforation, 5 external optical lens, 6 box cover, 7 water inlet pipe, 8 water outlet pipe, 9 electric control valve, 10 partition, 11 fixed fin, 12 shaft rod, 13 movable fin, 131 guide groove, 14 floating bar, 15 electromagnetic group, 151 upper electromagnetic block, 152 lower electromagnetic block, 16 temperature monitoring module. DETAILED DESCRIPTION

[0040] Example 1: Reference Figure 1-Figure 5A high-power light source for improving the light output efficiency of UV-LEDs comprises a light source housing 1, a cooling water tank box 2 and a plurality of lamp boards 3, and also comprises a sealing plate 4; one end of the light source housing 1 is open, and the cooling water tank box 2 is installed in the light source housing 1; a plurality of lamp boards 3 are installed on the outer wall of the end of the cooling water tank box 2 facing the opening of the light source housing 1, and the end of the cooling water tank box 2 facing the opening of the light source housing 1 is set to be a heat-conductive material, and a plurality of LED lamp beads 301 are arranged on the lamp board 3; the sealing plate 4 is set at an end of the lamp board 3 away from the cooling water tank box 2, the sealing plate 4 is fixedly installed between the cooling water tank box 2, the sealing plate 4 is fitted between the lamp board 3, a perforation 401 is opened at a position corresponding to the LED lamp beads 301 on the sealing plate 4, and the outer wall of the sealing plate 4 is set to be silver-white ; In the prior art, an optical lens is usually directly arranged on the outside of the lamp board 3, which will cause loss of the emitted light source, and cause internal sealing, resulting in excessive light source conversion into heat inside, and easily causing the internal temperature to be too high, affecting the service life of the LED lamp beads; therefore, in this application, through the arrangement of the above-mentioned sealing plate 4 and the arrangement of the perforations 401 on the sealing plate 4 corresponding to the LED lamp beads 301, the LED lamp beads are directly leaked out for use, without causing blocking loss to the emitted light source, and the silver-white color of the surface of the sealing plate 4 is used for reflection, thereby effectively improving the light utilization rate; and at the same time, the LED lamp beads 301 are directly leaked out to reduce the conversion of excessive light sources into heat, and reduce the heat around the LED lamp beads 301, thereby improving the LED life.

[0041] Example 2: Reference Figure 1-Figure 9 , a high-power light source for improving the light output efficiency of UV-LED. On the basis of Example 1, a mounting hole is reserved on the outer side of a sealing plate 4, and an external optical lens 5 is detachably connected to the outer side of the sealing plate 4. Therefore, under normal circumstances, the sealing plate 4 can be used directly and the LED lamp beads can be leaked out to improve the utilization rate of the light source and reduce the overall heat of the light source; and in the environment with flying liquid, dust particles, flying ink, etc., the external optical lens 5 can be directly installed with the sealing plate 4 for use, so that the light source can be used adaptably in different environments to improve the protection effect of the LED.

[0042] Example 3: Based on Example 1 or Example 2, refer to Figure 1-Figure 9A high-power light source for improving the light output efficiency of UV-LED, a water tank is arranged in a cooling water tank box 2, a plurality of vertically distributed through grooves are opened at one end of the cooling water tank box 2 facing the lamp board 3, a fixed fin 11 is sealed and installed in the through groove, the fixed fin 11 is extended in the horizontal direction, one end of the fixed fin 11 is in contact with the lamp board 3, and the other end of the fixed fin 11 is in contact with the inner wall of the water tank, a horizontally extending partition 10 is installed in the middle of the water tank, a gap is arranged between one side of the partition 10 and the inner wall of the water tank, the upper part of the partition 10 in the water tank is arranged as an upper cavity 201, and the lower part of the partition 10 in the water tank is arranged as a lower cavity 202, the cooling water tank The box 2 is opened at one end away from the lamp board 3, and a box cover 6 is installed at the open end of the cooling water tank box 2. A water inlet pipe 7 and a water outlet pipe 8 are installed on the box cover 6. The water inlet pipe 7 and the water outlet pipe 8 are both arranged at a side position away from the gap. The water inlet pipe 7 is connected with the upper cavity 201, and the water outlet pipe 8 is connected with the lower cavity 202, so that the water inlet pipe 7 passes water into the upper cavity 201, the water flows along the upper cavity 201 from the gap position to the lower cavity 202, and the water flows from the lower cavity 202 to the position of the water outlet pipe 8 and then flows out from the water outlet pipe 8, so as to realize the water circulation in the water tank, and the lamp board 3 is cooled by the heat exchange of the material at the end of the cooling water tank box 2 itself and the fixed fins 11.

[0043] In the present invention, a temperature monitoring module 16 is provided at a position of the cooling water tank box 2 facing the lamp board 3; an electric control valve 9 is provided on the outside of the water inlet pipe 7 and the water outlet pipe 8, and the electric control valve 9 is configured as a flow rate sleeve valve, and the electric control valve 9 is used to adjust the flow rate of the water inlet pipe 7 and the water outlet pipe 8; a swing mechanism is provided in the upper cavity 201 and the lower cavity 202, and the swing mechanism is used to swing up and down to increase the movement of water flow; a central processing unit is installed in the light source shell 1, and the temperature data of the back side of the lamp board 3 is collected and processed by the temperature monitoring module 16 and the central processing unit. The central processing unit calculates and controls the flow rate of the water inlet pipe 7 and the water outlet pipe 8, and controls the swing frequency of the swing mechanism according to the current temperature and the preset temperature suitable range, threshold and other key parameters. Through the comprehensive analysis of the central processing unit, the heat dissipation and cooling effect of the light source during use and the cooling efficiency are effectively improved, thereby ensuring that the LED maintains a high light output efficiency for a long time and effectively extending the service life of the LED lamp.

[0044] In the present invention, the temperature monitoring module 16 is provided with a plurality of temperature sensors;

[0045] The calculation formula for temperature monitoring data is as follows: Where n is the number of temperature sensors, T i,k is the temperature detected by the ith temperature sensor at time k, w i Assign corresponding weights to each temperature sensor and satisfy It should be noted that w iIt is a pre-set weight for multiple temperature sensors according to the usage environment to ensure the accuracy and reliability of the data.

[0046] In the present invention, in order to grasp the temperature change trend in real time, the system also calculates the temperature change rate, and the calculation formula is as follows: Where, T avg,k-1 is the calculated temperature at the previous moment k-1, and Δt is the time interval between two adjacent temperature measurements.

[0047] In the present invention, the calculation formula for controlling the flow velocity variation range of the water inlet pipe 7 is as follows:

[0048]

[0049] In the formula, k in is the temperature control coefficient, k in =α|v T,k |+β, it should be noted that k in is a positive number, α and β can be determined according to the system characteristics, ΔT = T avg,k -T avg,k-1 , C sys is the system heat capacity, c w is the specific heat capacity of water, m w is the mass of water that the tank can fully hold, d in is the diameter of the water inlet pipe 7, P in Inlet pressure of water inlet pipe 7, P out is the outlet pressure of the water inlet pipe 7, ξ in is the resistance coefficient of the water inlet pipe 7, ρ w is the density of water;

[0050] The current speed of water inlet pipe 7 is v new =v mom +Δv in ;v mom is the flow rate of water inlet pipe 7 in the previous period;

[0051] The calculation formula for controlling the flow rate variation range of the outlet pipe 8 is as follows:

[0052]

[0053] In the formula, k out is the temperature control coefficient. It should be noted that k out It is a positive number and can be determined according to the system characteristics. ΔT=T avg,k -T avg,k-1 , C sys is the system heat capacity, c w is the specific heat capacity of water, m is the mass of water that the tank can fully accommodate, d out is the diameter of the outlet pipe 8, P′ inInlet pressure of water outlet pipe 8, P' out is the outlet pressure of the water outlet pipe 8, ξ out is the resistance coefficient of the outlet pipe 8, ρ w is the density of water; where sgn(ΔT) is a sign function, when ΔT>0, sgn(ΔT)=1; when ΔT<0, sgn(ΔT)=-1; when ΔT=0, sgn(ΔT)=0;

[0054] The current speed of the outlet pipe 8 is v new =v mom +Δv out ;v mom It is the flow rate of the water outlet pipe 8 in the previous period.

[0055] In the present invention, the swing mechanism is provided with a plurality of movable fins 13 parallel to each other, the movable fins 13 are placed horizontally, a shaft 12 is fixed to the end of the movable fin 13, a fixing hole is opened at a position corresponding to the shaft 12 on the box cover 6, the outer wall of the shaft 12 is rotatably connected to the inner wall of the fixing hole by a bearing, the shaft 12 corresponding to the position of the upper chamber 201 is arranged at a side position close to the water inlet pipe 7, and the shaft 12 corresponding to the position of the lower chamber 202 is arranged at a side position away from the water outlet pipe 8; an electromagnetic group 15 is installed at a position on the outer wall of the box cover 6 corresponding to the swing mechanism, and the electromagnetic group 15 is located at a side position of the movable fin 13 away from the shaft 12, that is, the electromagnetic group 15 corresponding to the upper chamber 201 is arranged at a position away from the water inlet pipe 7, and the electromagnetic group 15 corresponding to the position of the lower chamber 202 is arranged at a position close to the outlet The position of the water pipe 8, the electromagnetic group 15 is set on the upper electromagnetic block 151 and the lower electromagnetic block 152. After the upper electromagnetic block 151 and the lower electromagnetic block 152 are energized, they are magnetically adsorbed with the movable fins 13. The upper electromagnetic block 151 is located above the lower electromagnetic block 152. When the upper electromagnetic block 151 is energized, the multiple movable fins 13 in the corresponding chamber will swing upward, and the ends of the movable fins 13 will fit with the outer walls of the adjacent movable fins 13. When the lower electromagnetic block 152 is energized, the movable fins 13 in the corresponding chamber will swing downward, and the ends of the movable fins 13 will fit with the outer walls of the adjacent movable fins 13. The swing frequency of the movable fins 13 is controlled by the frequency of alternating power supply of the upper electromagnetic block 151 and the lower electromagnetic block 152, so as to improve the heat dissipation and cooling efficiency through the swing of the movable fins 13.

[0056] In the present invention, an embedding groove is provided on the movable fin 13 at a position away from the shaft rod 12, and a floating bar 14 is fixed in the embedding groove. A plurality of guide grooves 131 are provided on the top of the movable fin 13, and the guide grooves 131 are opened toward a position away from the shaft rod 12. When water flows in the water tank, the floating bar 14 is used to assist in stabilizing the movable fin 13, and the guide grooves 131 are used to disperse the liquid flow to improve the heat dissipation effect.

[0057] Specific working method: The system is pre-set with a suitable temperature range;

[0058] The current temperature is determined by the calculation formula of the temperature monitoring data. When the current temperature is within the appropriate temperature range, the electromagnetic group 15 is not energized, and the flow rates of the water inlet pipe 7 and the water outlet pipe 8 are adjusted by the calculation formula of the flow rate change range control of the water inlet pipe 7 and the water outlet pipe 8 to improve the immediacy of heat dissipation, and the movable fins 13 are made to float up and down in a natural placement state and swing naturally by the change of flow rate to improve the heat dissipation and cooling effect;

[0059] When the current temperature is below the suitable temperature range: in order to prevent the influence of too low temperature on the use of LED, the electromagnetic group 15 is not energized, and the valves of the water inlet pipe 7 and the water outlet pipe 8 are closed to prevent the temperature from being too low;

[0060] When the current temperature is above the suitable temperature range: the flow rates of the water inlet pipe 7 and the water outlet pipe 8 are controlled by the above calculation formula, and the upper electromagnetic block 151 and the lower electromagnetic block 152 are alternately connected, so that the upper electromagnetic block 151 and the lower electromagnetic block 152 in the same electromagnetic group 15 are alternately energized, thereby realizing the active accelerated swinging of the movable fins 13, thereby improving the heat dissipation efficiency.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-power light source for improving the light extraction efficiency of UV-LED, comprising a light source housing (1), a cooling water tank box (2) and a plurality of light panels (3), characterized in that: Also includes a sealing plate (4); One end of the light source housing (1) is open, and the cooling water tank box (2) is installed in the light source housing (1); The plurality of light boards (3) are mounted on the outer wall of one end of the cooling water tank box (2) facing the opening of the light source housing (1), and a plurality of LED lamp beads (301) are arranged on the light board (3); The sealing plate (4) is arranged at one end of the lamp plate (3) away from the cooling water tank box (2), a through hole (401) is provided at a position corresponding to the LED lamp bead (301) on the sealing plate (4), and the outer wall of the sealing plate (4) is arranged to be silvery white.

2. A high-power light source for improving UV-LED light extraction efficiency according to claim 1, characterized in that: A mounting hole is reserved on the outer side of the sealing plate (4), and an external optical lens (5) is detachably connected to the outer side of the sealing plate (4).

3. A high-power light source for improving the light extraction efficiency of UV-LED according to any one of claims 1 to 2, characterized in that: A water tank is arranged in the cooling water tank box (2), and a plurality of vertically distributed through grooves are opened at one end of the cooling water tank box (2) facing the lamp board (3), and fixed fins (11) are sealed and installed in the through grooves. A horizontally extending partition (10) is installed in the middle of the water tank, and a gap is arranged between one side of the partition (10) and the inner wall of the water tank. The part above the partition (10) in the water tank is arranged as an upper chamber (201), and the part below the partition (10) in the water tank is arranged as a lower chamber (202).

4. A high-power light source for improving UV-LED light extraction efficiency according to claim 3, characterized in that: The cooling water tank box (2) is opened at one end away from the lamp panel (3), and a box cover (6) is installed at the open end of the cooling water tank box (2). A water inlet pipe (7) and a water outlet pipe (8) are installed on the box cover (6). The water inlet pipe (7) and the water outlet pipe (8) are both arranged at a side away from the gap. The water inlet pipe (7) is connected to the upper cavity (201), and the water outlet pipe (8) is connected to the lower cavity (202).

5. A high-power light source for improving UV-LED light extraction efficiency according to claim 4, characterized in that: A temperature monitoring module (16) is provided at a position of the cooling water tank box (2) facing the light board (3); The outer sides of the water inlet pipe (7) and the water outlet pipe (8) are both provided with an electric control valve (9), the electric control valve (9) being configured as a flow rate sleeve valve, and the electric control valve (9) being used to adjust the flow rate of the water inlet pipe (7) and the water outlet pipe (8); The upper chamber (201) and the lower chamber (202) are both provided with a swing mechanism, and the swing mechanism is used to swing up and down to increase the movement of the water flow; A central processing unit is installed in the light source housing (1), and the temperature data of the back side of the light board (3) is collected and processed through the temperature monitoring module (16) and the central processing unit. The central processing unit calculates and controls the flow rate of the water inlet pipe (7) and the water outlet pipe (8) based on the current temperature and key parameters such as the preset temperature suitable range and threshold.

6. A high-power light source for improving the light extraction efficiency of UV-LED according to claim 5, characterized in that: The temperature monitoring module (16) is provided with a plurality of temperature sensors; The calculation formula for temperature monitoring data is as follows: Where n is the number of temperature sensors, T i,k is the temperature detected by the ith temperature sensor at time k, w i Assign a corresponding weight to each temperature sensor (and satisfy ).

7. A high-power light source for improving UV-LED light extraction efficiency according to claim 6, characterized in that: In order to grasp the temperature change trend in real time, the system also calculates the temperature change rate. The calculation formula is as follows: Where, T avg,k-1 is the calculated temperature at the previous moment k-1, and Δt is the time interval between two adjacent temperature measurements.

8. A high-power light source for improving UV-LED light extraction efficiency according to claim 7, characterized in that: The calculation formula for controlling the flow rate variation range of the water inlet pipe (7) is as follows: In the formula, k in is the temperature control coefficient, k in =α|v T,k |+β, α and β can be determined according to system characteristics, ΔT=T avg,k -T avg,k-1 , C sys is the system heat capacity, c w is the specific heat capacity of water, m w is the mass of water that the tank can fully hold, d in is the diameter of the water inlet pipe (7), P in Inlet pressure of water inlet pipe (7), P out is the outlet pressure of the water inlet pipe (7), ξ in is the resistance coefficient of the water inlet pipe (7), ρ w is the density of water; Wherein, sgn(ΔT) is a sign function, when ΔT>0, sgn(ΔT)=1; when ΔT<0, sgn(ΔT)=-1; when ΔT=0, sgn(ΔT)=0; The calculation formula for controlling the flow rate variation range of the outlet pipe (8) is as follows: In the formula, k out is the temperature control coefficient, k out =α|v T,k |+β, α and β can be determined according to system characteristics, ΔT=T avg,k -T avg,k-1 , C sys is the system heat capacity, c w is the specific heat capacity of water, m w is the mass of water that the tank can fully hold, d out is the diameter of the outlet pipe (8), P′ in Inlet pressure of the outlet pipe (8), P' out is the outlet pressure of the water outlet pipe (8), ξ out is the resistance coefficient of the outlet pipe (8), ρ w is the density of water; Wherein, sgn(ΔT) is a sign function, when ΔT>0, sgn(ΔT)=1; when ΔT<0, sgn(ΔT)=-1; when ΔT=0, sgn(ΔT)=0.

9. A high-power light source for improving UV-LED light extraction efficiency according to claim 7, characterized in that: The swing mechanism is provided with a plurality of movable fins (13) parallel to each other, and a shaft (12) is fixed to the end of the movable fin (13); a fixing hole is provided at a position corresponding to the shaft (12) on the box cover (6); an outer wall of the shaft (12) and an inner wall of the fixing hole are rotatably connected via a bearing; the shaft (12) corresponding to the position of the upper chamber (201) is arranged at a side position close to the water inlet pipe (7), and the shaft (12) corresponding to the position of the lower chamber (202) is arranged at a side position away from the water outlet pipe (8); An electromagnetic group (15) is installed at a position on the outer wall of the box cover (6) corresponding to the swing mechanism. The electromagnetic group (15) is located at a side position of the movable fin (13) away from the shaft (12). The electromagnetic group (15) is arranged on an upper electromagnetic block (151) and a lower electromagnetic block (152). When the upper electromagnetic block (151) and the lower electromagnetic block (152) are energized, they are magnetically attracted to the movable fin (13). The swing frequency of the movable fin (13) is controlled by the frequency of alternating power supply of the upper electromagnetic block (151) and the lower electromagnetic block (152).

10. A high-power light source for improving UV-LED light extraction efficiency according to claim 9, characterized in that: An embedding groove is provided on the movable fin (13) at a position away from the shaft rod (12), a floating strip (14) is fixed in the embedding groove, and a plurality of guide grooves (131) are provided on the top of the movable fin (13), the guide grooves (131) are opened toward a position away from the shaft rod (12).

Images