Heating and blowing device for large hot air drying room

The invention relates to timbers, pharmaceuticals, foods and chemical products, in particular to a heating and blowing device for a large hot air drying room. A plurality of fans (1) are disposed in a rectangular fan support frame (12). Gaps among the fans (1) are blocked by air blocking plates (13). The fans are linked by a synchronization rotation linkage mechanism (2) for synchronous horizontal rotation. The fan support frame (12) is fixed on a rectangular movable frame (17). Rollers (19) embedded into guide rails (18) on two sides are disposed on two sides of the fan support frame (12). An air guide component (4) is disposed on a blowing side of each fan (1). A plurality of radiators (6) corresponding to the fans (1) are disposed at two ends of the guide rails. Three arc flow deflectors (11) are disposed at three inner included angles of the drying room. By the heating and blowing device, power consumption is lowered greatly, operation cost and drying cost are lowered, the drying room is enabled to be efficient, energy-saving and widely applicable, timbers of two or more different kinds or of different thicknesses can be evenly dried simultaneously, production efficiency is increased, and drying operations are highly flexible.