The importance of laser chiller
Choosing a suitable laser cooling system is crucial as it directly affects the lifespan and processing accuracy of the laser, thereby determining the overall performance of the laser equipment. Laser chiller, as a device specifically designed for cooling lasers, plays a crucial role in the laser processing process. It can effectively protect CO2 laser tubes, YAG solid-state laser crystals, and tubes from cracking. At the same time, by maintaining a sufficient and constant temperature inside the laser cavity, the stability of the laser output power, the immunity of the laser cavity from thermal deformation, and the consistency of the laser beam quality are ensured.
Several key factors for choosing a laser chiller
1. Water quality and water circulation system
This comprehensive indicator is often overlooked, but it has a direct impact on the lifespan of the laser. Therefore, when choosing a laser chiller, it is important to pay attention to these key factors. Ensuring water quality and the material of the water circulation system have a significant impact on the lifespan of the laser and require careful selection.
2. Cooling capacity
Cooling capacity is an important indicator of the performance of laser chillers. It determines the cooling capacity that the chiller can provide, which in turn affects the stability and service life of the laser. Therefore, when choosing, it is necessary to match the cooling capacity reasonably based on actual needs and the power of the laser. The cooling capacity represents the cooling capacity of the chiller, while also affecting the stability and service life of the laser.
3. Heat dissipation issues and water flow rate
Impurities in water are easily trapped at the two end lenses of CO2 glass tube lasers, leading to poor heat dissipation and affecting the output beam quality and spot mode of the laser. Therefore, special attention should be paid to the cleanliness and heat dissipation of the lenses when selecting and using them. At the same time, attention should be paid to the water flow rate and the head of the booster pump to ensure that sufficient heat can be carried away in a timely manner.
4. Thermal efficiency and water volume
Thermal efficiency and water volume are two important indicators for evaluating the performance of a water chiller. The working control mode of the compressor and the size of the water tank will both have an impact on these two indicators. Generally speaking, a larger water tank is better, but the control method of the compressor is equally important. The operation control method with PID feedback function can significantly improve the overall cooling capacity of the system.
5. Temperature control accuracy
Temperature control accuracy is an important indicator of lasers, especially for semiconductor lasers, which require very high temperature control accuracy, usually reaching ± 0.1 ℃. For CO2 lasers, the temperature requirements are relatively relaxed, usually between ± 2 ℃ and ± 5 ℃, and most specialized water coolers on the market can meet this requirement. This requires the compressor to be able to predict temperature changes and adapt to changes in load.
