Low -temperature drying device

The utility model provides a low -temperature drying device, include: a drying box, an air suction pump, the 2nd air suction pump, the air -supply line, the backwind tube, cold heat exchanger, cold heat exchanger is connected to air -supply line one end, an air suction pump's air intake is connected to the other end, an air suction pump's air outlet passes through the air intake that the stoving case is connected to the tuber pipe, the air outlet of stoving case passes through the air intake that the 2nd air suction pump is connected to the backwind tube, the 2nd air suction pump's air outletis connected to cold heat exchanger through the backwind tube, wherein, the stoving incasement will be dried the case through the baffle and cut into a plurality of baking zones from a left side to parting on the right side, fixed mounting has the material to place the board in every baking zone, be equipped with the ventilation hole on the baffle, ventilation hole on the adjacent baffle is located the upper and lower bot