The invention relates to a jet regulator with a jet fractionating device, which distributes the incoming water flow into a plurality of individual jets.
From DE 30 00 799 a jet regulator is already known, which is provided with a jet fractionating device embodied as a perforated plate. This jet fractionating device of the previously known jet regulator distributes the incoming water flow into a plurality of individual jets. The individual jets formed in the jet fractionating device impinge several subsequent metal sieves of a flow rectifier downstream, which return the individual jets back into one uniform, bubbling combined jet.
From WO 2004/033807 A1 an aerated jet regulator with a jet fractionating device is already known, which distributes the incoming water flow into a multitude of individual jets. Here, the jet fractionating device is aligned such that the individual jets each impinge a nodal point of criss-cross grid bars of a grid network arranged downstream. In order to aerate the individual jets several aeration openings are provided at the housing perimeter of the jet regulator housing. The air necessary to aerate the water jet can be suctioned in through the aeration openings. However, this bears the risk that the air suction and thus the duly functioning of the previously known jet regulators are compromised by the passing swirled water jet.
From U.S. Pat. No. 4,313,564, a self-cleaning jet regulator is known, that in the jet regulator housing has a jet fractionating device, that distributes the incoming water flow into a plurality of individual jets. The jet fractionating device of this known jet regulator has a central cleaning opening, that is closed with the help of a valve body. This valve body is movable against the return force of a compression spring under pressure of the through flowing water from the open position to a closed position. While the jet fractionating device is able to carry out its function in the closed position of the valve body, in the open position of the valve body the particles of dirt carried in the water in the area of the jet fractionating device are able to pass through the central cleaning opening. The jet fractionating device is followed by a flow rectifier that takes the individual jets created by the jet fractionating device and recombines them to form a single uniform stream, and is formed by a plurality of stacked metal screens. The compression spring is supported on the metal screens of the flow rectifier, and contacts the valve body with its other end. The metal screens are held in place on the side opposite the valve body with the help of a split ring that is supported on the flow side against an annular ring. This annular ring allows the split ring to be fixed in position, which split ring holds the metal screen in position on the outflow side. The provided annular ring of U.S. Pat. No. 4,313,564 is therefore to a great extent located under the aeration openings.
The objective is to provide a jet regulator of the type noted at the outset, that can be produced with relatively little expense, which is characterized in improved and/or further distributed incoming individual jets.
The solution of this object according to the invention is described in independent claim 1.
In the jet regulator according to the invention at least one of the individual jets formed in the jet fractionating device impinges a nodal point of individually crossing grid bars of a grid network arranged downstream. Due to the fact that at least some of the individual jets coming from the jet fractionating device impinge a nodal point formed by the criss-crossing grid bars another multi-axial jet fractionation of each individual jet occurs in this area.
When the nodal points each are embodied as recesses at the inflowing side of the preferably plate-shaped grid network, here another secondary fractionating of the individual jets occurs. Namely, the individual jets are not only distributed in the axial direction, rather an additional radial fractionating of the individual jets occurs at the axial walls limiting the recesses of the jet regulator according to the invention. This way, in this area a fractionating of the individual jets is further facilitated, with an undesired excessive swirling of the individual jets impinging the nodal points being avoided.
Additionally or alternatively the jet regulator may also be embodied as an aerated jet regulator with its jet regulator housing being provided at its exterior perimeter with at least one separate aerating opening in the circumferential direction and at the interior housing circumference, in the flow direction downstream of the aeration openings, is provided with at least one deflector portion to keep the eddied water jets away from the aeration openings, the deflector portions encircle the inner circumferential side of the outer rim of a separate construction part provided grid-work. Through the aeration openings provided on the housing perimeter of the jet regulator housing, the air necessary for aerating the water jet can be suctioned in through the aeration openings provided at the housing perimeter of the jet regulator housing. In order for this air intake not to interfere with the passing swirled water jet, deflector portions are provided at the interior housing circumference of the jet regulator according to the invention in the flow direction downstream of at least one aeration opening. The deflector portions keep the swirled water jet flowing through the interior of the housing of the jet regulator away from the aeration openings.
Here, it is advantageous for the grid network to be embodied plate-shaped.
It is advantageous for the grid bars, at the upstream side, to be at least rounded or chamfered in sections at the side of the longitudinal edge in the area of some of its nodal points. Due to the fact that in this embodiment the grid bars are rounded or chamfered at the upstream side at least in the area of the nodal points at both sides of the longitudinal edges, an excessive swirling of the individual jets is avoided and the formation of a uniform, bubbling water jet is improved.
Here, a preferred embodiment according to the invention provides for the grid bars to be chamfered at the upstream side like a gabled roof in an area of their nodal points.
A particularly advantageous embodiment of the invention provides for the recesses of the grid network at the upstream side to be embodied like hollow cylinders.
Here, the deflecting projection may be shaped like a flange and, in particular at its flat sides facing to and/or away from the water flow, be arranged in reference to each other in approximately parallel cross-sectional levels.
However it is particularly advantageous when the deflecting projection on the side facing away from the aeration opening in the flow direction, has an expanded angled deflection surface. By the angled deflection surface expanding in the flow direction, a water jet swirled in the interior of the housing is guided away from the aeration openings provided at the housing perimeter towards the longitudinal axis of the housing.
In order to modularly provide the jet regulator according to the invention it is advantageous that the grid network can be inserted into the housing as a separate part. Thus, the jet regulator can optionally be provided with or without the grid network embodied according to the invention.
For the modular design of the jet regulator according to the invention it is advantageous when the grid network is followed downstream by at least one additional part of a rectifying device and/or a flow rectifier that can be inserted into the housing.
Further embodiments according to the invention are discernible from the claims as well as the drawing. In the following, the invention is explained in greater detail using an exemplary embodiment.
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The part 13 is a downstream flow rectifier 15, which forms the face of the jet regulator 1 at the outflow side. The flow rectifier 15 of the jet regulator 1, shown in
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Number | Date | Country | Kind |
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10 2005 001 419 | Jan 2005 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP2005/014167 | 12/31/2005 | WO | 00 | 7/10/2007 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2006/074820 | 7/20/2006 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
2633343 | Aghnides | Mar 1953 | A |
4313564 | Shames et al. | Feb 1982 | A |
4537360 | Bock | Aug 1985 | A |
20060011748 | Ferrari | Jan 2006 | A1 |
Number | Date | Country |
---|---|---|
3000799 | Jul 1981 | DE |
20010099 | Sep 2000 | DE |
10313501 | Oct 2004 | DE |
2004033807 | Apr 2004 | WO |
Number | Date | Country | |
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20080169361 A1 | Jul 2008 | US |