When cycle starts, a fan wheel blows the air through a lint filter in the bottom area of the machine, then the air passes an evaporator which cools it down.
The air then passes through a condenser (heat exchanger) where it is warmed up. The warm air is guided through the air channel positioned in the rear part of the machine, and it enters again into the drum.
The warm air passes through the moving drum and wet clothes, extracting humidity from clothing.
The warm humid air then passes the first lint filter, reaches the fan wheel, and the circulation starts again.