Aluminum-plastic combined radiator

An aluminum-plastic combined radiator relates to the technical field of radiating appliances and comprises a plurality of radiating units arranged side by side, the upper ends and the lower ends of the radiating units are connected with main pipelines, and the radiating units are communicated with the main pipelines through connecting pieces. And a deflation assembly is further arranged on the upper surface of the main pipeline located on the upper portion. The heat dissipation unit and the main pipeline are both made of aluminum-coated plastic, the plastic pipe is a heat-resisting polyethylene pipe, hot water flows from the heat-resisting polyethylene pipe and does not make contact with metal pieces, the service life is more than 30 years, and the aluminum-coated plastic structure does not deform after being used for a long time and is not prone to faults. The deflation assembly is simple in structure, the water flow space of the main pipeline reaches 100%, and meanwhile the heat dissipation efficiency is im