Abstract: A clothes dryer includes a drum with a first flow path and a flow guiding component with a second flow path. These paths are fluidly connected. Positioned between the drum and component is a switching valve. This valve comprises an air-exchange chamber with a first and second chamber. The first chamber has a first inlet linked to the second flow path and a first outlet linked to the environment. The second chamber has an inlet connected to the environment and an outlet connected to the first flow path. A through hole exists between both chambers. The sealing assembly includes a driving member and two sealing members. The driver rotates the first sealing member, which can selectively cover the first outlet and through hole, while the second member can cover the second outlet.