Abstract: A surface cleaning machine is proposed which includes an appliance body and a cleaning head which is arranged on the appliance body, wherein at least one driven cleaning roller unit is positioned on the cleaning head and a dirty fluid tank device is arranged on the cleaning head, and a drive motor, wherein a scraper guide device which acts on the at least one cleaning roller unit is associated with the at least one cleaning roller unit, wherein the scraper guide device is arranged at an inlet orifice of the dirty fluid tank device, and wherein the scraper guide device is arranged and formed in such a way that dirty fluid is couplable from the at least one cleaning roller unit via the inlet orifice of the dirty fluid tank device into the dirty fluid tank device without a suction fan.

Abstract: A surface cleaning machine is provided, including a device body having a housing, a suction unit device having a fan, said suction unit device being arranged in the housing, a cleaning head which is arranged at the device body outside of the housing and comprises at least one cleaning roller and is operatively connected to the suction unit device for fluid communication therewith, an air-cooled drive motor for rotatingly driving the at least one cleaning roller, and a process air routing device for process air of the suction unit device, wherein the drive motor is arranged outside of the housing of the device body and wherein a cooling air routing device for cooling air of the drive motor comprises at least one fluid path which is arranged at or in the housing and/or wherein the cooling air routing device is coupled to the process air routing device.

Abstract: A surface cleaning machine is provided, including a device body having a housing, a suction unit device having a fan, said suction unit device being arranged in the housing, a cleaning head which is arranged at the device body outside of the housing and comprises at least one cleaning roller and is operatively connected to the suction unit device for fluid communication therewith, an air-cooled drive motor for rotatingly driving the at least one cleaning roller, and a process air routing device for process air of the suction unit device, wherein the drive motor is arranged outside of the housing of the device body and wherein a cooling air routing device for cooling air of the drive motor comprises at least one fluid path which is arranged at or in the housing and/or wherein the cooling air routing device is coupled to the process air routing device.

Abstract: 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.