Aerator for liquids

• US 5,467,929 A
• Filed: 05/12/1994
• Issued: 11/21/1995
• Est. Priority Date: 05/20/1993
• Status: Expired due to Term

• Current Assignee: AMFAG Srl
• Original Assignee: AMFAG Srl
• Inventors: Bosio, Orlando
• Primary Examiner(s): YOUNG, KAREN MERRITT
• Application Number:
  US08/241,528
• Time in Patent Office: 558 Days
• Field of Search: 239/428.5, 239/432, 239/553.3, 239/553.5, 239/590.3, 239/590.5, 261/DIG. 22
• US Class Current: 239/428.5
• CPC Class Codes: B01F 23/234 Surface aerating
• CPC Class Codes: B01F 23/23413 using nozzles for projecting the liquid into the gas atmosphere
• CPC Class Codes: E03C 1/084 Jet regulators with aerating means
• CPC Class Codes: Y10S 261/22 Faucet aerators

Abstract

The aerator has a body having openings formed therein and containing meshes and a perforated plate. A monolithic convex diaphragm, defining a wall, has holes formed in a central region thereof and is perimetrically ultrasonically welded to a seat formed in the plate. The convexity of the diaphragm is oriented in a fluid flow direction, whereby retained particles are collected at the base of the perimeter of the diaphragm.

Claims

1. Aerator (1) for liquids, comprising a containment body (4) connectable to an end of a liquid conveyance duct, a perforated plate (7) contained within said body (4), a plurality of meshes (6) disposed within said body (4), and a diaphragm (8), said diaphragm comprising a solid wall (Sa) partially provided with liquid passage holes (8b, 8c), said diaphragm being seated on said plate (7) on a part of said body (4) connectable to an end of a liquid conveyance duct, wherein said liquid passage holes (8b, 8c) are present only on a middle portion of said solid wall (8a).

2. In combination, a liquid conveyance duct having an end, an aerator (1), and means (2, 3) for connecting said aerator (1) to said end of said liquid conveyance duct, wherein said aerator comprises;

a tubular body (4) defining a liquid inlet;

a plurality of spaced-apart superimposed meshes (6) contained within said body (4);

a perforated plate (7) contained within said body (4) between said liquid inlet and said plurality of spaced-apart superimposed meshes (6);

a plurality of openings (5) formed in said body (4) between said plurality of spaced-apart superimposed meshes (6) and said perforated plate (7);

a convex diaphragm (8) peripherally engaging said perforated plate (7) and;

a sealing gasket (3a) having one face in abutment engagement with said perforated plate (7) and a peripheral portion of said convex diaphragm;

wherein said convex diaphragm (8) comprises a solid wall (8a), said solid wall (8a) having formed in a portion thereof a plurality of holes (8b, 8c), said convex diaphragm (8) having a convexity extending away from said perforated plate (7);

and wherein said portion of said solid wall (8a) having formed therein said plurality of holes (8b, 8c) is located on a central portion of said convex diaphragm (8) disposed furthermost from said perforated plate (7), whereby to filter and accumulate particulate impurities contained in liquid at a periphery of said convex diaphragm (8) and thereby prevent clogging of said plurality of holes (8b, 8c).