SELFPROPELLED AND SELF-STEERING FLOOR CLEANING MACHINE AND CLEANING SYSTEM

A self-propelling and self-steering floor cleaning appliance is provided which includes at least one cleaning unit and a dirt collecting container having a container interior, a bottom wall, a dirt inlet opening and a dirt outlet opening formed on the bottom wall, wherein dirt particles are transferable by means of the at least one cleaning unit into the container interior. To enable easy removal of dirt particles from the dirt collecting container while achieving a simple design, the floor cleaning appliance has a valve device actuatable by air pressure and arranged at the dirt outlet opening with at least one valve body which, in a closed position, at least partially forms the bottom wall and closes the dirt outlet opening and is transferable into an open position in which the dirt outlet opening is at least partially uncovered. The invention further relates to a cleaning system.