Split type closed circulation heat pump tobacco curing barn

The utility model discloses a split type closed circulation heat pump tobacco leaf curing barn which comprises a heat pump outer machine, a heating chamber, a tobacco leaf containing chamber and a control valve. The heating chamber and the tobacco leaf containing chamber form the curing barn. A partition wall is arranged between the tobacco loading chamber and the heating chamber, a tobacco loading chamber air inlet is reserved in the middle of the upper end of the partition wall, a heating chamber air return port is reserved in the middle of the lower end of the partition wall, and a heatingheat exchanger, a circulating fan and a dehumidifying heat exchanger are arranged in the heating chamber. The heating heat exchanger is communicated with the heat pump outdoor unit through a pipeline,and the dehumidification heat exchanger is located below the heating heat exchanger and communicated with the heat pump outdoor unit through a pipeline. The tobacco leaf curing machine has four functions of refrigeration, hea