Temperature control system for laser

Abstract

The utility model provides a temperature control system for a laser, the laser is provided with a laser pumping module, the temperature control system of the laser comprises a compressor, a heat exchanger, a filter, an electromagnetic valve and a metal cold plate which are sequentially connected through a metal pipe to form a loop, the heat exchanger is provided with a cooling fan, and the metal pipe is filled with refrigerant. The compressor and the cooling fan are both connected with the electric control system element; the heat dissipation end face of the metal cold plate is connected with the laser pumping module through a heat conduction structure, and a phase change material is arranged on the local surface or in the metal cold plate. According to the utility model, the phase-change material is combined with the metal cold plate, so that the heat conduction efficiency of the temperature control system is higher, the temperature change can be quickly responded, and the laser is ensured to operate within the optimal working temperature range.

Description

TECHNICAL FIELD

[0001] The utility model relates to a laser, specifically relates to a temperature control system for laser. BACKGROUND

[0002] The working principle of the laser is based on the stimulated radiation principle. When an atom in a high energy level is excited by a photon, it will transition to a low energy level and release a photon with the same frequency, phase and polarization state as the excitation photon. This process is called stimulated radiation. These released photons interfere with the excitation photons, forming a strong light beam, i.e. laser. Laser has the characteristics of good directionality, high brightness, good monochromaticity and good coherence, making it widely used in communication, medical treatment, industrial processing, scientific research and other fields. In the laser, a specific pump module is used to transfer energy to the working substance, so that the particle number inversion state is achieved, thereby realizing the generation of laser.

[0003] The pump module of the laser works and generates a large amount of heat. If this heat is not dissipated in time, it will cause the temperature of the laser to rise, thereby affecting the performance and stability of the laser. The traditional heat dissipation method often has the problems of low heat dissipation efficiency and complex structure, which is difficult to meet the needs of modern lasers for high-efficiency heat dissipation and compact structure. Therefore, the utility model makes an in-depth study on this problem and proposes an innovative heat dissipation scheme for the pump module of the laser. UTILITY MODEL CONTENT

[0004] The utility model provides a temperature control system for laser, laser is equipped with laser pump module, the temperature control system of laser includes the compressor, heat exchanger, filter, electromagnetic valve, metal cold plate that are connected in proper order through metal pipe and constitute a loop, heat exchanger is equipped with cooling fan, in the metal pipe is filled with refrigerant, compressor, cooling fan all are connected with electric control system element,

[0005] The heat dissipation end face of the metal cold plate is connected to the laser pump module through a heat conduction structure,

[0006] The local surface or interior of the metal cold plate is provided with a phase change material.

[0007] Further, the metal pipe is a copper pipe, and the metal cold plate is an aluminum alloy plate.

[0008] Further, the other side of the metal cold plate is attached with a heating component.

[0009] Further, the phase change material is arranged on the surface of the heat dissipation end face.

[0010] Further, the phase change material is filled in the interior of the metal cold plate, and the phase change material does not contact the metal pipe.

[0011] Further, the phase change material is filled in the metal cold plate, and the metal pipe passes through the phase change material.

[0012] Further, the heat conduction structure is thermal grease, a thermal sheet or liquid metal.

[0013] Further, the temperature control system is further provided with a plurality of temperature sensors connected with the electric control system elements, and the temperature sensors comprise:

[0014] A first temperature sensor, which is arranged on the metal pipe between the compressor and the metal cold plate;

[0015] A second temperature sensor, which is arranged on the metal cold plate and in contact with the phase change material;

[0016] A third temperature sensor, which is arranged on the metal pipe between the filter and the compressor.

[0017] Further, the temperature control system comprises a shell, one side of the shell is provided with heat dissipation holes, and the shell is provided with at least one detachable door plate.

[0018] The utility model has the advantages of:

[0019] 1) The metal cold plate contains phase change material, which can store and release cold according to the pre-set temperature value, effectively control the working temperature of the laser, and improve the stability and service life of the laser.

[0020] 2) The combination of phase change material and metal cold plate makes the heat conduction efficiency of the temperature control system higher, can quickly respond to temperature changes, realizes efficient heat dissipation of the laser pump module, effectively reduces the temperature of the laser, and ensures the laser to operate in the best working temperature range.

[0021] 3) The metal cold plate is provided with a heating film, which can provide heat when needed to ensure that the phase change material can still effectively store and release cold in a low temperature environment. When the ambient temperature is too low and the phase change material cannot effectively store cold, the heating film can be started to provide the necessary heat for the metal cold plate and the phase change material thereon, ensuring that the temperature control system can always work stably. This design further enhances the adaptability and reliability of the temperature control system, so that the laser can maintain the best working state in various environments.

[0022] 4) The system has compact structure and high heat dissipation efficiency, which can meet the needs of modern lasers for efficient heat dissipation and compact structure. Through the combination of micro-channel heat exchanger and phase change metal cold plate, and through the setting of frequency conversion direct current cooling fan and multiple temperature sensors, intelligent control of the temperature control system is realized, further improving the heat dissipation efficiency and stability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 An internal structure diagram of the temperature control system for the laser device;

[0025] Figure 2 An internal structure diagram of the temperature control system for the laser device;

[0026] Figure 3 An internal structure diagram of the temperature control system for the laser device;

[0027] Figure 4 A principle diagram of the temperature control system for the laser device;

[0028] Figure 5 An external shape diagram of the shell of the present application;

[0029] Figure 6 A schematic diagram of the detachable door plate with the shell removed;

[0030] Figure 7 A cross-sectional view of the metal cold plate provided with phase change material in Embodiment 1;

[0031] Figure 8 A cross-sectional view of the metal cold plate provided with phase change material and heating film in Embodiment 2;

[0032] Figure 9 A cross-sectional view of the metal cold plate provided with phase change material in Embodiment 3;

[0033] Figure 10 A cross-sectional view of the metal cold plate provided with phase change material in Embodiment 4;

[0034] Figure 11 A cross-sectional view of the metal cold plate provided with phase change material and heating film in Embodiment 5. DETAILED DESCRIPTION

[0035] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid obscuring the present application, some technical features known in the art are not described.

[0036] In order to thoroughly understand the utility model, the detailed steps and detailed structure will be proposed in the following description in order to explain the technical scheme of the utility model. The preferred embodiments of the utility model are described as follows, however, in addition to these detailed descriptions, the utility model can also have other implementation manners.

[0037] Referring to Figures 1-4 The utility model provides a temperature control system for laser, laser is equipped with laser pumping module 14. The temperature control system of laser includes compressor 2, heat exchanger 1, filter 13, electromagnetic valve 7, metal cold plate 10 that are connected by metal pipe 3 in turn and constitute a loop.

[0038] Heat exchanger 1 is equipped with cooling fan 11, electromagnetic valve 7 is equipped with electromagnetic coil 20, metal pipe 3 is filled with refrigerant, compressor 2, cooling fan 11 are connected with electric control system element 8. The high-temperature gas of compressor 2 compresses refrigerant, high-temperature refrigerant passes through heat exchanger 1, heat is dissipated into the surrounding environment by fan 11, refrigerant is cooled to liquid state and throttled in electromagnetic valve 7 after passing through filter 13, low-temperature liquid refrigerant is heated in metal cold plate 10 and becomes gaseous state and is sucked by compressor 2, thereby the heat exchange is carried out in circulation, and the specific heat exchange principle is similar to air conditioner principle, which is not described here.

[0039] The temperature control system is also provided with three temperature sensors connected with electric control system element 8, first temperature sensor 15 is arranged between compressor 2 and metal cold plate 10 in metal pipe 3, second temperature sensor 16 is arranged in metal cold plate 10, third temperature sensor 17 is arranged between filter 13 and compressor 2 in metal pipe 3, electric control system element 8 dynamically adjusts the rotating speed of variable frequency compressor 2 and variable frequency direct current cooling fan 11 according to the temperature value detected by the temperature sensor arranged at three places, and then more accurate temperature regulation is realized.

[0040] The temperature control system contains a shell 18, referring to Figures 5-6 One side of shell 18 is provided with a heat dissipation hole 19, and the shell is provided with at least one detachable door plate. The surface of shell 18 is painted to increase its corrosion resistance and aesthetic degree. The setting of heat dissipation hole 19 helps the effective emission of heat and ensures the normal operating temperature of the internal components of the temperature control system. The design of detachable door plate facilitates the user to maintain and overhaul the inside of the temperature control system, and improves the maintainability of the equipment.

[0041] The heat dissipation end surface of metal cold plate 10 is connected with laser pumping module 14 through heat conduction structure, the heat of laser pumping module 14 is transferred to metal cold plate 10 through heat conduction structure, and is taken away by refrigerant in metal pipe 3. The heat conduction structure is heat-conducting silicone grease, heat-conducting sheet or liquid metal, and its excellent heat conduction performance ensures the efficient heat transfer.

[0042] In the utility model, the partial surface or the inside of the metal cold plate 10 is equipped with the phase change material 6, the metal cold plate 10 adopts high-performance phase change material 6, and the material changes phase in specific temperature range, absorbs or releases a large amount of heat, to further enhance the heat dissipation effect.The design of the metal cold plate 10 not only improves the heat dissipation efficiency, but also effectively stabilizes the working temperature of the laser pump module 14, and ensures the long-term stable operation of the laser.

[0043] In a preferred embodiment, the other side of the metal cold plate 10 is attached with a PI heating film as a heating component 5, and the metal cold plate 10 can be heated through the heating component 5 to improve the working temperature of the laser pump module 14, to ensure the stability of the laser working in low temperature environment.

[0044] In a preferred embodiment, the metal pipe 3 is made of high thermal conductivity metal (such as copper pipe or aluminum pipe), and the metal cold plate 10 selects aluminum alloy plate or cast aluminum plate.The aluminum alloy plate or cast aluminum plate has good thermal conductivity and light weight characteristics, so that the heat dissipation performance of the whole temperature control system is more excellent, and the weight of the system is reduced.Copper pipe ensures the smooth flow of refrigerant in the metal pipe 3, reduces the risk of refrigerant leakage, and improves the stability and reliability of the system.Such design optimizes the overall performance of the temperature control system, so that it can better adapt to the working requirements of the laser, and ensures that the laser can maintain the best working state in various environments.

[0045] The setting mode of the phase change material 6 can be various, that is, it can be set on the surface of the metal cold plate 10 or in the interior of the metal cold plate 10, and several typical embodiments are listed below for illustration:

[0046] Embodiment one

[0047] As shown in Figure 7 , the metal cold plate 10 is provided with phase change material 6 near the laser pump module 14.When the unit is running, the refrigerant exchanges heat through the metal cold plate 10, and the energy is transferred from the metal cold plate 10 to the phase change material 6, so as to be transmitted to the outside laser pump module 14.

[0048] Embodiment two

[0049] As shown in Figure 8 , the metal cold plate 10 is internally processed with a space, the space is filled with phase change material 6, and the copper pipe is arranged in the phase change material 6.When the unit is running, the refrigerant exchanges heat through the phase change material 6, and the energy is transferred from the phase change material 6 to the metal cold plate 10, so as to be transmitted to the outside laser pump module 14.The heating film can play a temperature stabilizing role and start when the load changes.

[0050] Embodiment three

[0051] As shown in Figure 9 The space inside the metal cold plate 10 is filled with phase change material 6, and the copper pipe is arranged in the phase change material 6. When the unit is running, the refrigerant exchanges heat with the phase change material 6, and the energy is transferred from the phase change material 6 to the metal cold plate 10, so as to be transmitted to the external laser pump module 14.

[0052] Embodiment four

[0053] As shown in Figure 10 The space inside the metal cold plate 10 is filled with phase change material 6, and the copper pipe is arranged in the metal cold plate 10. When the unit is running, the refrigerant exchanges heat with the metal cold plate 10, and the energy is absorbed by the phase change material 6, so as to be transmitted to the external laser pump module 14.

[0054] Embodiment five

[0055] As shown in Figure 11 The space inside the metal cold plate 10 is filled with phase change material 6, and the copper pipe is arranged in the metal cold plate 10. When the unit is running, the refrigerant exchanges heat with the metal cold plate 10, and the energy is absorbed by the phase change material 6, so as to be transmitted to the external laser pump module 14. The heating film can play a temperature stabilizing role and start when the load changes.

[0056] The above describes the preferred embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art can make many possible changes and modifications to the technical solutions of the present application, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of the present application, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solutions of the present application, still belongs to the scope of protection of the technical solutions of the present application.

Claims

1. A temperature control system for a laser, the laser being provided with a laser pump module (14), characterized in that, The temperature control system of the laser comprises a compressor (2), a heat exchanger (1), a filter (13), an electromagnetic valve (7) and a metal cold plate (10) connected in sequence through a metal pipe (3) and forming a loop, the heat exchanger (1) is provided with a cooling fan (11), the metal pipe (3) is filled with refrigerant, and the compressor (2) and the cooling fan (11) are connected with an electric control system element (8); One side of the metal cold plate (10) is connected with the laser pump module (14) through a heat conduction structure, The metal cold plate (10) is provided with a phase change material (6) on a part of the surface or inside.

2. A temperature control system for a laser as claimed in claim 1, wherein, The metal pipe (3) is a copper pipe, and the metal cold plate (10) is an aluminum alloy plate.

3. A temperature control system for a laser as defined in claim 1, wherein, The other side of the metal cold plate (10) is attached with a heating component (5).

4. A temperature control system for a laser as claimed in claim 1 or 3, wherein, The phase change material (6) is arranged on the surface of the heat dissipation end face.

5. A temperature control system for a laser as claimed in claim 1 or 3, wherein, The phase change material (6) is filled in the metal cold plate (10), and the phase change material (6) is not in contact with the metal pipe (3).

6. A temperature control system for a laser as claimed in claim 1 or 3, wherein, The phase change material (6) is filled in the metal cold plate (10), and the metal pipe (3) passes through the phase change material (6).

7. A temperature control system for a laser as defined in claim 1, wherein, The heat conduction structure is heat-conducting silicone grease, a heat-conducting sheet or liquid metal.

8. A temperature control system for a laser as defined in claim 1, wherein, The temperature control system is further provided with a plurality of temperature sensors connected with the electric control system element (8), and the temperature sensors comprise: A first temperature sensor (15) arranged on the metal pipe (3) between the compressor (2) and the metal cold plate (10); A second temperature sensor (16) arranged on the metal cold plate (10); A third temperature sensor (17) arranged on the metal pipe (3) between the filter (13) and the compressor (2).

9. A temperature control system for a laser as defined in claim 1, wherein, The temperature control system comprises a shell (18), one side of the shell (18) is provided with a cooling hole (19), and the shell is provided with at least one detachable door plate.

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