Controllable air collection box

The utility model relates to a controllable air collecting box which is characterized by comprising a transmission assembly, a limiting assembly, a sealing assembly, an air guide plate and a box body.The transmission assembly, the limiting assembly, the sealing assembly and the air guide plate are arranged in the box body. An air outlet is formed in the front end of the box body, and an air inletconnecting pipe is arranged at the rear end of the box body. A sealing assembly is arranged around the air outlet; the transmission assembly drives the air guide plate to move along an arc track, andthe limiting assembly limits the air guide plate at the two ends of the movement stroke of the air guide plate. And the air guide plate guides air entering the box body from the air inlet connectingpipe to be discharged from one side of the air outlet. The air collecting box and the air valve are combined into a whole, so that the indoor circulation and the outdoor circulation share one air collecting box; the connection o