Evaporator used has thin-walled pipe and punching II times turned side once forming of efficient aluminum wing tablets by mechanical expansion tube and into, has high of Biography efficiency, selection of wind machine anti-wet, and pillbox low temperature, and air big, and noise low, and running smooth reliable; selection has stainless steel tube composition of electric thaw cream system, electric tube directly insert disc tube, thaw cream time short, and effect good, and shell body used has quality plate and spray plastic process, and resistance corrosion, and shape flat, and beautiful, and generous