The utility model belongs to the technical field of rotary dehumidifier, provide rotary dehumidifier group, include: wind side, Y type wheel seat and regeneration air -out device are handled to frame, runner regenerated wind side, runner, and runner regenerated wind side, runner are handled wind side, Y type wheel seat and regeneration air -out device and is installed in the frame, runner regenerated wind side is including regenerated wind import, regeneration air inlet duct, regenerative heating case, spoiler and venturi nozzle, the spoiler is installed in regenerative heating case rear end, the higher authority is provided with a plurality of vortex holes, and arranging with a plurality of circular array forms in the vortex hole, all installs venturi nozzle on every vortex hole, and the spoiler is located Y type wheel seat front side, the runner is handled the wind side and is exported, is handled wind air outlet air flue, processing fan and the import of processing wind including handling wind. The utility model discloses an uses that cooperate of venturi nozzle and spoiler makes contact runner surface and abundant and the runner contact of the enough maximum areas of wind energy, has improved the utilization ratio of hot -air, and the reduction energy consumption is lost, and is energy -concerving and environment -protective.