Food dryer

The utility model discloses a food dryer, including stoving case, transport link joint, drive machine and heating system, heating system includes first heat exchanger, first fan and second fan, second heat exchanger, carry the link joint at stoving incasement layering staggered arrangement, adjacent two -layer transports link joint transmission direction is opposite, and food conveys downwards on the transport link joint step by step, the one end of drying -machine is equipped with first heat exchanger and first fan, carries in the stoving case after air current that first heat exchanger provided first fan heats, the other end of stoving case is equipped with second heat exchanger and second fan, and the hot gas flow that the second heat exchanger will flow the stoving incasement heats once more, and the hot gas flow after the second fan heats the second heat exchanger blows back the stoving case. The utility model discloses thermal cyclic utilization is realized to ability high efficiency ground stoving food