| 摘要 |
A method and a device for cleaning a dirty surface, wherein water is squirted from a nozzle against the dirty surface in order to wash away the dirt with the water, characterized in that compressed air is supplied to the water in a mixing chamber (12), which is located upstream of the nozzle, at a predetermined pressure, after which the water is squirted against the dirty surface in a spray of droplets, downstream of the nozzle.
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