The utility model relates to an air heat exchanger, which is a heat exchanger which is used as a medium for cooling or heating forced flowing air, such as water, glycol solution, steam, heat conduction oil, etc.. Widely used in light industry, construction, chemical industry, machinery, textile, printing and dyeing, electronics, food, starch, medicine, metallurgy, painting and other industries in the hot air heating, drying, cooling, dehumidification and other projects. Different types of heat exchangers are selected according to different working conditions. Air heat exchanger: heat exchanger tube type classification: around the chip, rolled plate, string, chip type; base material: seamless steel tube, purple / yellow steel pipe fin material: steel, aluminum sheet

The high frequency welding air heat exchanger is widely used in petrochemical industry, power plant and power plant transformation, air conditioning and refrigeration, cochlear furnace, finned economizer and air preheater and other industries. Fin radiator air high-frequency welding pipe is wound on the strip fin, and the high-frequency welding process, the welding piece in the pipe, ensure the bonding strength of tube and fin, the heat transfer performance is good, high strength, heat vibration and mechanical vibration, thermal expansion performance, heat dissipation area, long service life to adapt to a wide range of temperature, high pressure, bear.

The utility model is widely used in the heat recovery of flue gas at 200-600 DEG C high temperature.