Plasma light source radiator

Abstract

The utility model discloses a plasma light source radiator, which relates to the technical field of plasma light sources, and adopts the specific scheme that a flow guide channel penetrates through the inside of a light source body, a high-heat-conduction radiating shell is sleeved outside the light source body, dense radiating fins are integrally formed on the surface of the shell, and a fan and a temperature sensor are arranged at the top of the shell. The flow guide channel is additionally arranged in the light source and matched with the driving fan to forcibly flow airflow, so that the airflow accurately penetrates through a core heating area, and heat is rapidly taken away; meanwhile, the temperature sensor is in linkage with the fan to start and stop, pure fin heat dissipation is automatically switched to when the load is low, the energy-saving requirement is met, the use requirement of an existing high-power plasma light source can be met, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of plasma light source technology, specifically to a plasma light source heat sink. Background Technology

[0002] In existing technologies, traditional plasma light source heat dissipation solutions (such as the plasma lamp light source structure disclosed in CN201556604U) mostly employ a single passive heat dissipation structure. This involves placing metal heat sink fins on the outside of the light source and utilizing natural convection between the fin surface and the air to achieve heat conduction. This design can maintain thermal balance when dealing with low-power light sources by leveraging the expanded heat dissipation area of ​​the fins. However, with breakthroughs in semiconductor laser excitation technology and high-frequency pulsed power supplies, the power density of modern plasma light sources has increased by 3-5 times compared to traditional solutions. The single-fin heat dissipation solution faces significant limitations, specifically as follows:

[0003] 1. Under high power, the surface temperature gradient of the light source increases sharply. When the heat is conducted to the root of the fins by metal alone, the local heat flux density exceeds the thermal conductivity limit of the material, resulting in heat accumulation in the light source substrate.

[0004] 2. Natural convection heat dissipation efficiency is positively correlated with temperature difference. However, in high-power scenarios, the temperature difference between the fin surface and the air decreases, the convective heat transfer coefficient decreases, and the heat dissipation capacity decreases exponentially.

[0005] 3. Passive heat dissipation cannot dynamically adjust heat flow. When the power of the light source increases suddenly, the fins need to store heat for a long time to restore thermal balance, which can easily cause transient thermal shock. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a plasma light source heat sink, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a plasma light source heat sink, comprising:

[0008] A plasma light source with a flow channel running through its interior;

[0009] A heat dissipation shell is installed outside the plasma light source. The heat dissipation shell has an opening at the top and an air inlet at the bottom.

[0010] The fan, mounted on the top of the heat sink casing, is used to draw airflow in from the air intake and out through the air guide channel and opening;

[0011] The temperature sensor is mounted on the top of the heat sink housing, with the sensing end extending into the airflow channel.

[0012] Furthermore, the surface of the heat dissipation shell is integrally connected with several evenly distributed heat dissipation fins, and the heat dissipation shell and heat dissipation fins are made of aluminum or copper.

[0013] Furthermore, a channel is reserved between the top of the plasma light source and the inner side of the heat dissipation shell so that the airflow can be discharged through the opening after passing through the guide channel.

[0014] Furthermore, the plasma light source has several pre-drilled screw holes on its upper part, and the heat dissipation housing has several corresponding through holes on its top. The plasma light source and the heat dissipation housing are assembled by screws passing through the through holes and connecting the screw holes in sequence.

[0015] Furthermore, a mounting hole is provided on the top of the heat dissipation housing, and the temperature sensor is connected to the mounting hole by a thread.

[0016] Furthermore, the top of the heat dissipation housing is provided with a reserved area, and the fan is installed in the reserved area.

[0017] Furthermore, after the plasma light source is assembled with the heat dissipation housing, its periphery is tightly fitted with the inner side of the heat dissipation housing to form a heat conduction path.

[0018] This invention provides a heat sink for a plasma light source. Compared with the prior art, it has the following advantages:

[0019] Beneficial effects:

[0020] This plasma light source heat sink incorporates internal airflow channels and an active fan to force airflow, ensuring precise airflow through the core heat-generating area and rapidly dissipating heat. Simultaneously, a temperature sensor triggers the fan's start / stop, automatically switching to pure finned cooling under low load to meet energy-saving requirements. This design satisfies the demands of modern high-power plasma light sources and extends their lifespan. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the heat dissipation shell in this utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0024] Figure 4 This is a half-sectional view of the assembled version of this utility model.

[0025] In the diagram: 1. Plasma source; 11. Flow channel; 12. Screw hole; 2. Heat sink shell; 21. Heat sink fins; 22. Reserved area; 23. Opening; 24. Mounting hole; 25. Through hole; 3. Fan; 4. Temperature sensor; 5. Screw. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution: a plasma light source heat sink, including a plasma light source 1. The specific structure and working principle of the plasma light source 1 are well known in the art and will not be described in detail here. A flow channel 11 is opened through the inside of the plasma light source 1, and a heat sink shell 2 is covered on the outside of the plasma light source 1. A fan 3 and a temperature sensor 4 are respectively installed on the top of the heat sink shell 2. The fan 3 can introduce airflow from the bottom of the flow channel 11 and exit it from the top of the heat sink shell 2. The detection end of the temperature sensor 4 is located inside the flow channel 11.

[0028] The upper part of the plasma light source 1 is also provided with several screw holes 12, and the top of the heat sink 2 is also provided with several through holes 25. The screw holes 12 correspond to the through holes 25. By screwing screws 5 into the through holes 25 and screw holes 12 in sequence, the plasma light source 1 and the heat sink 2 are assembled and fixed.

[0029] After the plasma light source 1 and the heat dissipation shell 2 are assembled, they fit together on all sides. Several evenly distributed heat dissipation fins 21 are integrally connected to the surface of the heat dissipation shell 2. Both the heat dissipation shell 2 and the heat dissipation fins 21 are made of high thermal conductivity material, preferably aluminum or copper. During the process of the plasma light source 1 generating heat, because the plasma light source 1 is in contact with the inner side of the heat dissipation shell 2, the heat will be conducted to the heat dissipation shell 2. Then, through the several evenly distributed heat dissipation fins 21 on the heat dissipation shell 2, the heat can be dissipated.

[0030] An opening 23 is provided at the top of the heat dissipation shell 2, and an air inlet is reserved at the bottom of the heat dissipation shell 2. The air inlet is connected to the flow channel 11. A channel is reserved between the top of the plasma light source 1 and the inner side of the heat dissipation shell 2. The airflow drawn in by the fan 3 can pass through the air inlet, the flow channel 11, the channel and the opening 23 in sequence, and finally be discharged from the heat dissipation shell 2.

[0031] The top of the heat dissipation housing 2 is also provided with a mounting hole 24. The temperature sensor 4 is installed inside the mounting hole 24 by a thread. The temperature sensor 4 adopts existing technology and is model PT-100. The specific structure and principle will not be described in detail here.

[0032] The top of the heat dissipation shell 2 is also provided with a reserved area 22, and the fan 3 is installed inside the reserved area 22.

[0033] During the operation of the plasma source 1, a large amount of heat is generated. In the prior art, to dissipate this heat, the plasma source 1 is equipped with a heat dissipation shell 2. The heat dissipation shell 2 has several evenly distributed heat dissipation fins 21 on its exterior. However, the heat dissipation effect of the heat dissipation fins 21 alone is limited. When some high-power plasma sources 1 are operating, the heat generated can double. Therefore, based on the original structure of the heat dissipation shell 2, a fan 3 is added to further improve the heat dissipation capacity of the heat dissipation shell 2. Furthermore, a guide channel 11 is reserved in the plasma source 1. When the fan 3 is working, the airflow generated will flow through the interior of the plasma source 1 through the guide channel 11, thereby carrying away the heat generated by the plasma source 1 during operation. Most of the heat generated is carried by airflow into the channel between the plasma light source 1 and the top of the heat sink 2, then into the opening 23, and finally discharged by the fan 3. A small portion of the heat is discharged through the heat conduction technology of the original heat sink fins 21. During the operation of the plasma light source 1, the temperature sensor 4 can monitor the temperature inside the flow channel 11 at any time, which is the operating temperature of the plasma light source 1. When the internal temperature of the flow channel 11 exceeds the set threshold of the temperature sensor 4, the fan 3 will start to work. In other words, when the heat is not large, the heat is discharged through the heat conduction technology of the heat sink fins 21. When the heat is large, the fan 3 and the heat sink fins 21 will discharge heat simultaneously to achieve rapid heat dissipation and meet the working requirements of the plasma light source 1.

Claims

1. A plasma light source heat sink, characterized in that, include: A plasma light source (1) has a flow channel (11) running through its interior; A heat dissipation shell (2) is provided on the outside of the plasma light source (1). The heat dissipation shell (2) has an opening (23) at the top and an air inlet at the bottom. The fan (3) is installed on the top of the heat sink (2) and is used to draw airflow from the air inlet and out through the guide channel (11) and the opening (23); Temperature sensor (4) is installed on the top of heat sink housing (2) and the detection end extends into the flow channel (11).

2. The plasma light source heat sink according to claim 1, characterized in that, The heat dissipation shell (2) has a plurality of uniformly distributed heat dissipation fins (21) integrally connected to its surface. The heat dissipation shell (2) and the heat dissipation fins (21) are made of aluminum or copper.

3. The plasma light source heat sink according to claim 1, characterized in that, A channel is reserved between the top of the plasma light source (1) and the inner side of the heat dissipation shell (2) so that the airflow can be discharged through the opening (23) after passing through the guide channel (11).

4. The plasma light source heat sink according to claim 1, characterized in that, The plasma light source (1) has several screw holes (12) pre-drilled on its upper part, and the heat dissipation shell (2) has several through holes (25) correspondingly set on its top. The plasma light source (1) and the heat dissipation shell (2) are assembled by screws (5) passing through the through holes (25) and connecting screw holes (12) in sequence.

5. A plasma light source heat sink according to claim 1, characterized in that, The heat dissipation housing (2) has a mounting hole (24) on its top, and the temperature sensor (4) is threaded into the mounting hole (24).

6. A plasma light source heat sink according to claim 1, characterized in that, The heat dissipation shell (2) has a reserved area (22) on the top, and the fan (3) is installed in the reserved area (22).

7. A plasma light source heat sink according to claim 1, characterized in that, After the plasma light source (1) is assembled with the heat dissipation shell (2), its periphery is tightly fitted with the inner side of the heat dissipation shell (2) to form a heat conduction path.

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