Immersion phase change liquid cooling system of laser

The invention discloses an immersion phase change liquid cooling system of a laser. The system comprises a laser cutter box and a condenser, a refrigerant steam outlet is formed in the top of the laser knife box, a liquid refrigerant is arranged in the laser knife box, at least one laser module is arranged in the laser knife box, the heating surface of the laser module is immersed in the liquid refrigerant, the liquid refrigerant absorbs heat generated by the laser module and then is converted into a gas state from a liquid state, and the gas state refrigerant flows out of the laser knife boxthrough 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