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HANLI HL-12000 12000w laser chiller Matching 12000W fiber laser-large cooling capacity

12000w laser chiller Matching 12000W fiber laser-large cooling capacity
  • HL-12000


  • HL-12000

12000w laser chiller

HANLI HL-12000 cutting machine chiller

Matching 12000W fiber laser-large cooling capacity, stable performance and trouble-free, clean water quality, good heat exchange effect with fiber laser, and linkage signal to protect the laser...

Laser chillers are often used to cool UV lasers, CO2 laser glass tubes, semiconductor lasers, CO2 radio frequency tube lasers, fiber lasers in cutting machines, marking machines, engraving machines, and other equipment. The user can choose the applicable chiller according to the different power of the laser.

Chiller selection

The laser chiller not only protects the CO2 laser tube, YAG solid-state laser crystal and lamp tube against explosions during laser processing; sufficient and constant laser cavity temperature is a guarantee for stable laser output power, no thermal deformation of the laser cavity, and consistent laser beam quality. . Choosing a suitable laser cooling system can greatly increase the service life and processing accuracy of the laser, and maximize the performance of the laser equipment. However, most users and manufacturers often have a vague concept when selecting and recommending laser cooling systems. Many laser chillers on the market also have unclear indicators. The user equipment is also in accordance with the trend, and the laser equipment used cannot be accurately and reasonable. protect. The following indicators are critical to the selection of laser chillers:

1. Cooling capacity

a. As the name implies, the actual cooling capacity of the cooling system is the first indicator for the selection of laser cooling equipment.

b. Generally, we can calculate the calorific value of the laser according to the photoelectric conversion efficiency of the laser, and then choose.

P heat = P laser / μ

Assuming that the thermal efficiency μ of the glass tube CO2 laser is generally 15%, the 80W laser needs at least: 80/0.15 = 533W

That is to say, while generating 80W laser, the laser injects 533W energy, and the ineffective energy needs to be taken away by the water cooler.

c. Sometimes we directly determine the cooling capacity of the laser chiller based on the input rated power of the laser power supply minus the output power of the laser. For example, our commonly used RF lasers and solid-state lasers will indicate the power supply voltage and current of the rated full power. Taking the coherent 70W RF laser as an example, it requires a power input of 48V25A and an instantaneous 36A. The maximum input power can be calculated to be 1200W.

2. Water flow and booster pump head

Everyone pays attention to the refrigeration capacity and often ignores the indicator of water flow. The cooling capacity represents the cooling capacity provided by the compressor, and the water flow represents the ability of the chiller to take away heat. This causes the phenomenon that everyone often sees: a chiller with a nominal cooling capacity of 1000W is connected to an 80W glass tube, and the chiller It shows 25℃, but the laser tube is hot; in fact, it has no application effect.

3. Thermal efficiency and water volume

The above-mentioned concepts lead to the concepts of thermal efficiency and water volume of the water-cooled machine, which are the two indicators of the compressor's work control mode and the size of the water tank. Generally, the larger the water tank, the better, but different compressor control methods will be very different in design. This is the same compressor cooling capacity and water volume. The operation control method with PID feedback function will greatly improve the cooling capacity of the overall system.

4. Temperature control accuracy

This indicator is entirely from the requirements of the laser. For semiconductor lasers, the temperature control accuracy must be ±0.1℃. This requires the compressor to predict the law of temperature changes and adapt to the load changes. Generally, it is impossible to use a water chiller with an integrated temperature control module. To this point. Of course, for CO2 lasers, the temperature requirement is ±2℃ to ±5℃, and most of the dedicated water coolers on the market can do it.

5. Water quality requirements and water filtration and water circulation system materials

a. This comprehensive index is often ignored, but it is very reusable and directly affects the life of the laser.

i. For CO2 glass tube lasers, the lens at both ends is a dead angle of water flow, it is easy to trap impurities in the water, causing poor heat dissipation, and the slight deformation of the lens directly affects the output beam quality and spot mode of the laser.

ii. For radio frequency lasers, impurities such as scale and patina on the heat sink will cause the electrode plate to deform if the temperature in the cavity is too high, and then the temperature sensor will alarm and the laser will not emit light.

iii. For YAG lasers, the surface cleanliness of the pump lamp, crystal and gold-plated cavity directly affects the light output power and spot mode; the blockage of the tiny water holes in the semiconductor module will directly burn the bars.

b. Most of the chillers on the market use copper tubes for the refrigerant tube, and the evaporator plate is directly placed in the cooling water, which will produce a large amount of copper rust, which directly affects the laser.

c. Many filter-free chillers use tap water directly or use pure water that is not replaced for a long time, which will cause bacteria and impurities to be deposited on the laser, which will affect the life and use effect of the laser.


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Dapeng laser specializing in R&D, manufacturing laser marking, cutting and welding machines, we also provides Laser sources and spare parts to the laser machine manufacturers in China and surrounding countries.

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