(57) A rinsing and/or washing device (1) for an electric household appliance (2), consisting
in an arm (20) rotationally mounted about a generally vertical axis (A) in a washing
chamber (3) of the electric household appliance, e.g. immediately either over or under
a container basket (4) of the dishes (5) to be washed, the arm delimiting a cavity
(22) therein connected in use to delivering means (7) of a pressurized service fluid
(8) and being provided with a plurality of spraying nozzles (23) arranged and oriented,
in use, towards the dishes to be washed, reciprocally spaced in the direction of length
of the arm and communicating with the internal cavity of the latter; wherein opposite
ends (25,26) of the arm radially and overhangingly extend, on opposite sides, from
the rotation axis (A), this being preferably positioned at the middle line of the
arm (20); and wherein the number, the size and the position of the nozzles (23b,23c)
are chosen so that the flow rate (Q1-Q4) of the washing fluid delivered in use by
the nozzles (23b,23c) along each concentric circumference (C1-C4) which the same trace
about the rotation axis (A) of the arm during a complete rotation of the same is an
increasing function, preferably in an essentially linear manner, of the radius (R1-R4)
of the circumference itself.
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