Immersion phase change liquid cooling system of laser

Abstract

The invention discloses an immersion phase change liquid cooling system of a laser. The system comprises a laser knife box and a condenser, a refrigerant steam outlet is formed in the top of the laserknife box, a liquid refrigerant is arranged in the laser knife box, at least one set of laser modules are arranged in the laser knife box, the heating faces of the laser modules are immersed in the liquid refrigerant, the liquid refrigerant absorbs heat generated by the laser modules and then is converted into gas from liquid, and the gas refrigerant flows out of the laser knife box through the refrigerant steam outlet. The input end of the condenser is connected to the refrigerant steam outlet, the output end of the condenser is connected to the refrigerant liquid inlet of the laser knife box, the condenser is used for conducting heat exchange on gaseous refrigerants so that the gaseous refrigerants can be converted into liquid refrigerants through phase change, and the liquid refrigerants enter the laser knife box through the refrigerant liquid inlet. By means of the technical scheme, the heat dissipation efficiency of the laser can be improved, it is guaranteed that the laser operates in a constant-temperature environment, and the problems of miniaturization and light weight of a laser heat dissipation system are solved.

Description

Technical field [0001] The present application relates to the technical field of lasers, and in particular, to an immersed phase change liquid cooling system for lasers. Background technique [0002] Lasers are widely used in various fields, such as processing, medical treatment, and scientific research because of their high brightness, strong coherence, good directionality and high concentration after passing through the lens. In the industrial field, laser marking, scribing, cutting, drilling, material removal, surface treatment and special material processing have a wide range of applications. As the power of the laser device continues to increase, the heat dissipation power increases accordingly. If the heat converted from the dissipated power cannot be eliminated in time, the temperature of the laser device increases sharply, the threshold current of the laser rises, the efficiency decreases, and the laser wavelength drifts seriously. Thereby affecting the material performa...

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Problems solved by technology

[0004] First, in order to meet the heat dissipation requirements of high-power lasers, it is necessary to continuously increase the coolant flow rate, resulting in an increase in the volume and weight of the pumps, pipelines, and liquid cooling plates of the entire heat dissipation system, and the heat dissipation power consumption is also gradually increased;

[0005] The second is that the increase of coolant flow rate will cause excessive internal pressure of the entire heat dissipation system, and the probability of leakage at the joints of the heat dissipation system will increase. Once leaked, it will be fatal to the laser;

[0006] The third is that the liquid-cooled heat dissipation method of the liquid-cooled plate is used, and there is a temperature difference between the inlet and the outlet, which leads to uneven temperature of the laser mode and affects the wavelength performance of the laser.

[0007] The greater the power of the laser, the greater the calorific value, and the greater the power consumption required for heat dissipation. However, for some special occasions, the heat dissipation of the water-cooled plate cannot provide such a large heat flux density. At the same time, the cooling module is within the specified volume and weight. It must not only meet the power requirements of the laser, but also meet the power requirements of heat dissipation

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