Refrigerating system for coiling chamber of vacuum aluminum plating machine

The utility model relates to a vacuum aluminized paper production machine, in particular to a refrigeration system for the winding room of vacuum aluminum plating machines, belonging to the vacuum aluminum plating machine refrigeration system structure technical field. The refrigeration system for the winding room of vacuum aluminum plating machines is characterized in that a refrigerant liquid nitrogen refrigeration system is arranged in a winding room, wherein the refrigerant liquid nitrogen refrigeration system is connected to a cooling coil pipe in the winding room via a liquid nitrogen tank outside the winding room, a conveying pipeline, a switch and a low temperature check valve, the low temperature check valve is controlled by a controller connected with a temperature sensor in the winding room, the output of the cooling coil pipe is communicated to the space outside the winding room of a vacuum aluminum plating machine. The refrigeration system utilizes liquid nitrogen as refrigerant, to protect envir