Corrugated heat exchange tube heat exchanger

The utility model relates to a corrugated heat exchange tube heat exchanger. Including a housing, a plurality of wave node heat exchange tubes are arranged in the shell; the corrugated heat exchange tube comprises a tube head section, a straight tube section and a corrugated tube section. The wave tube section is formed by connecting a plurality of wave crests which are arranged at intervals; thewave crest diameters of the same wave tube section are gradually reduced along the flowing direction of the cold medium; annular fins are arranged between adjacent wave crests of the straight pipe section and the wave pipe section. According to the utility model, the wave crest diameters of the same wave tube section are decreased progressively; the flowing state of a cold medium in the heat exchange tube is changed; meanwhile, the flowing state of a heat medium outside the corrugated heat exchange tube is changed by means of the annular fins, so that a cold medium and the heat medium can be in a turbulent flow state