Surface cleaning head

The invention relates to a surface cleaning head for cleaning a surface, comprising a housing having a cleaning space surrounded by a peripheral wall, in which at least one spray arm is mounted so as to be free to rotate about an axis of rotation, on which spray arm a cleaning nozzle is held for applying a pressurized cleaning liquid to the surface, the surface cleaning head further comprises a jet pump for sucking cleaning liquid applied to the surface, the jet pump having a suction receptacle in flow connection with the cleaning space, the suction receptacle being coupled to the peripheral wall and being able to be coupled to an outlet line, a drive nozzle to which pressurized cleaning liquid can be loaded for forming a suction flow is arranged in the suction socket. In order to achieve good suction under the condition of low consumption of the cleaning liquid, the driving nozzle is designed to be a full-cone nozzle, and the characteristic parameter of the nozzle is 0.18 l/min to 0.35 l/min under the condit