Fecha de publicación: 06/04/2021 Fuente: Wipo Tobacco Agriculture The invention discloses a compressor cascade starting energy-saving heat pump flue-cured tobacco curing barn, and relates to the field of heat pump flue-cured tobacco curing barns. The compressor cascade starting energy-saving heat pump flue-cured tobacco curing barn comprises a curing barn body and a heat pump shell, an evaporator, a first compressor and a condenser are arranged in the heat pump shell, the rear side of the first compressor communicates with a second compressor through a first pipeline, a first electromagnetic valve is arranged on the first pipeline, the right side of the second compressor communicates with a third compressor through a second pipeline, a second electromagnetic valve is arranged on the second pipeline, the rear sides of the first compressor, the second compressor and the third compressor fixedly communicate with third pipelines, the third pipelines communicate with the left side of the condenser, and the right side of the evaporator communicates with the left side of the first compressor through a fourth pipeline. According to the curing barn, different numbers of compressors can be started according to needs, energy is saved, the production cost of tobacco leaves is reduced, and heat of airflow in an air return pipe can be conveniently recycled.