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Working principle of water circulation cooling system of laser cutting machine

The working principle of the refrigerant circulation cooling system: the refrigerant liquid flows into the evaporator through capillary throttling and pressure reduction; it vaporizes in the evaporator, absorbs the heat of the cooled water in the external circulation cooling system of the water circuit, and becomes a high-temperature mortgage refrigerant vapor. It is sucked into the compressor; the compressor is compressed into high-temperature and high-pressure steam and discharged into the condenser.

In the condenser, the refrigerant releases heat to the cooling medium-air, and then is injected into the capillary tube as a high-pressure low-temperature liquid after condensation. It enters the evaporator again to absorb heat and vaporize through the capillary tube to achieve the purpose of circulating refrigeration.

The working principle of the water circuit external circulation cooling system: the water exchanges energy in the water tank with the refrigerant in the evaporator; after being cooled, it passes through the water tank, filter, and water pump to the heat exchanger in the water circuit internal circulation cooling system. The medium exchanges energy with the internal circulating water, absorbs its heat, and returns to the water tank to keep the internal circulating water within a certain temperature range.

The working principle of the internal circulation cooling system in the water circuit: the internal circulation water and the external circulation water exchange energy in the heat exchanger, and return to the water tank after being cooled, and then flow through the laser cavity through a filter and a water pump to take away the heat in the laser cavity , The laser is cooled, the temperature rises, and then flows back to the heat exchanger to exchange energy with the external circulating water.



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