| 摘要 |
<p>The cleaner has a suction/pressure housing (11) with an intake (12). The intake is situated in a plane parallel to the surface being cleaned and at a short distance from the surface. A pressure outlet (13) is connected to a detachable debris collector (17). The housing contains an ejector with a nozzle (14) connected to a pressurised water source, and a Venturi diffusor (15). The ejector is connected to the pressurised water source by a pipe of which part is formed by a corrugated section (10). The water flow through it and is pulsed to produce an alternating expansion and retraction of the corrugated section. This causes the cleaner housing to advance over the surface being cleaned.</p> |
