Heat exchanger cleaning device and dryer thereof

The utility model relates to a heat exchanger cleaning device and a dryer thereof. The heat exchanger cleaning device comprises a water tank, a filter, a water pump and a clean water supply unit, the water tank is used for collecting sewage flowing down from the surface of the heat exchanger, the filter is located in the water tank, the input end of the water pump is communicated with the filter through a pipeline, and the output end of the water pump is used for cleaning the heat exchanger; and the clean water supply unit is communicated with a pipeline between the filter and the water pump through a pipeline. According to the heat exchanger cleaning device and the drying machine thereof, the clean water supply unit communicated with the pipeline between the filter and the water pump is arranged, clean water generated in the water changing process is used for backflushing the filter, impurities on the surface of the filter are washed away, long-term use of the filter is facilitated, and the service life of t