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AssigneeOliveira & Irmao, S.A.
InventorsNoe Figueiredo, Antonio Manuel Gameiro Lopes, Victor Antonio Ferreira Da Costa, Antonio Manuel Moura De Oliveira
Estimating the term…
There is provided a silent-operating device for feeding water into a tank, in particular for filling a lavatory flush tank; the silencing effect is achieved by feeding the water through a chamber housing flow deflecting members; the members are perforated members arranged successively and spaced apart in the flow direction inside the chamber, and have respective numbers of through holes; the holes of consecutive members being offset with respect to one another to define a labyrinth path, i.e. a number of winding coil-like or zigzag paths, inside the chamber.
1) A silent-operating device (1) for feeding water into a tank, in particular for filling a lavatory flush tank, comprising a chamber (20) for the passage of a flow of water;
Dependencies are inferred from the claim text.
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Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post-…:…
Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating…
Liquid level responsive or maintaining systems: by float controlled valve
Water-closets or urinals with flushing devices
Term end not estimated
The present invention relates to a silent-operating device for feeding water into a tank, in particular for filling a lavatory flush tank.
As is known, filling a lavatory flush tank after each flushing operation generates sound vibration which is preferably eliminated or at least reduced.
Various types of flush tank feed devices designed to reduce noise are known.
A number of non-limiting embodiments of the present invention will be described by way of example with reference to the accompanying drawings, in which:
FIG. 1 shows a longitudinal section of a feed device in accordance with the invention;
FIG. 2 shows an exploded view in perspective of a number of component parts of the FIG. 1 device;
Number 1 in FIG. 1 indicates as a whole a silent-operating feed device for a flush tank (not shown). Device 1 comprises a body 2 housing a valve assembly 3 interposed between an inlet channel 4 and an outlet channel 5. Inlet channel 4 is connected to a fitting 6 for connection to the water mains, and outlet channel 5 is connected to an outflow pipe 7 having an axis substantially perpendicular to inlet channel 4 and, in use, substantially vertical.
In the non-limiting example shown in FIG. 1, valve assembly 3 is a known diaphragm valve assembly, and therefore not described or illustrated in detail. Briefly, valve assembly 3 comprises a disk-shaped diaphragm 8 separating inlet channel 4 from outlet channel 5 and closing a counterpressure chamber 9; counterpressure chamber 9 has a relief hole 10, and communicates with inlet channel 4 via a small-section nozzle 11 through diaphragm 8; a shutter 12, controlled by a lever 13 connected to a float 15 by an adjustable rod 14, selectively opens and closes relief hole 10; and diaphragm 8 is elastically deformable to allow water to flow from inlet channel 4 to outlet channel 5 when relief hole 10 is open.
Outflow pipe 7 has an end 16 for connection to body 2 (and having, for example, a threaded coupling and sealing rings); and a free end 17 opposite end 16 and possibly connected to a tubular extension 18.