SUBMERGED-SURFACE CLEANING APPARATUS WITH INLET DUCT OF NON-CONSTANT CROSS SECTION

摘要

The invention relates to a submerged-surface cleaning apparatus comprising a hollow body and members for driving said hollow body over the submerged surface in a main direction of forward travel; a filtration chamber formed in said hollow body and having: a liquid inlet duct (15) extending into the hollow body and having a lower end (81) forming a liquid inlet (9), and an opposite upper end (82), opening into a filtering device (11); a liquid outlet out of the hollow body; a hydraulic circuit for the circulation of liquid between the liquid inlet (9) and the liquid outlet through the filtering device (11), characterized in that said inlet duct (15) has a cross section of which the area varies from its lower end (81) up to a maximum value at its upper end (82) that opens into the filtering device (11).