| 摘要 |
A surface cleaning device utilizing a pressurized flow of cleaning fluid from opposite ends of a rotatable shaft disposed under a generally cylindrical shallow housing, said nozzles being disposed at transverse angles to the elongate axis of said rotatable shaft such that the thrust created by discharge of cleaning fluid therefrom causes rotation of said rotatable shaft and thus cleaning action on a surface to be cleaned. In operation, the pressurized flow of cleaning fluid is passed through a swivel connection associated with the housing and into the rotating arm/nozzle apparatus. The cleaning fluid discharging from the discharge nozzles creates a thrust, and the angle of inclination of the discharge port of the nozzles relative to vertical creates a thrust and hence self-rotating motion to the nozzle/rotating arm apparatus. Fluid under pressure is generally contained between the housing and the surface being cleaned, therefore creating an intense agitational efficient cleaning environment and an increased ambient pressure under the housing, giving rise to a lifting force to the housing, which assists in maneuverability of the device during operation.
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