Evaporator and fruit-vegetable drying system

The utility model provides an evaporator and a fruit and vegetable drying system. The fruit and vegetable drying system comprises a drying cavity, a circulating air path, an air supply mechanism and aheat pump unit. The heat pump unit comprises a refrigerant pipeline, an evaporator, a compressor, a condenser and a throttle valve. Evaporator comprising an evaporator housing, heat exchange plates which are arranged at intervals in a layered mode are arranged in the evaporator shell. A dehumidification channel is formed in a space between every two adjacent heat exchange plates; an air outlet ofthe drying cavity is communicated with the dehumidification channel; a refrigerant circulating pipe bundle is arranged on the refrigerant pipeline; the refrigerant circulating pipe bundle is insertedinto the evaporator shell along the interlayer interval of the adjacent heat exchange plates and transversely penetrates through the dehumidification channel; the dehumidification inlets and the dehumidification outlets of the