INSTALLATION INSURANCE DEVICE FOR A LAW MACHINE, OF A TYPE COMPATING LAW MACHINERY

摘要

The present invention relates to an anti-flooding safety device (1) for a washing machine, in particular for household use, said device (1) comprising a valve body (10) in which a duct (10C) is defined for the passage of a liquid, comprising:- an inlet section (11), for connecting the device (1) to a liquid supply source;- an outlet section (12) for connecting the device (1) to a supply tube (Tl) for supplying said liquid into a washing machine, wherein a second tube (T2) surrounds the supply tube (Tl), thereby forming a hollow space (SC);- an intermediate section (13) having a passage (14) for the liquid and connecting said inlet section (11) to said outlet section (12),wherein the anti-flooding device (1) comprises:- a shut-off device (20) comprising a closing element (20A) movably arranged in said intermediate section (13) for opening and/or closing said passage (14), said closing element (20A) comprising a first magnet (21);- an actuation device (30) positioned, at least partially, in a chamber (15) of the valve body (10) in fluidic communication with the hollow space (SC), said actuation device (30) comprising a second magnet (31) mounted on a rotary holder (32), wherein the holder (32) is associated with a blocking element (33) arranged to retain the holder (32) and the second magnet (31) in a first position, so as to repel the first magnet (21) with opposite polarization and preload the shut-off device (20) by means of the first magnet (21) in order to keep the passage (14) open;- a reaction element, which reacts with the leakage liquid entering the chamber (15) of the valve body (10) through the hollow space (SC).The peculiar feature of the present invention lies in the fact that said reaction element consists of a flexible membrane (34) associated with the blocking element (33), said flexible membrane (34) being sensitive to the increased pressure in the chamber (15) caused by a leakage from the first tube (Tl) and being adapted to produce a movement of the blocking element (33) to allow the rotation of the holder (32) and move the second magnet (31) from said first position to a second position, in which the second magnet (31) exerts attraction on the first magnet (21) in order to close the passage (14).