Jet Former With Tapered Flow Guide For Flat Water Jet
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Solution Overview
Problem
Conventional jet regulators in sanitary outlet fittings produce a water jet that initially forms a band but quickly becomes constricted and erratic, failing to maintain transparency over a long distance due to turbulent flow.
Innovation Solution
A jet former with a flow guide that tapers in a nozzle-like manner and has edge regions with a larger throughflow cross section compared to the middle region, creating a flat water jet band by interconnecting directed jets in the corner regions, and optionally featuring a homogenizing device with a grid-like or net-like structure to ensure a smooth, transparent jet pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a conventional round throughflow cross section is used, then the jet regulator is compatible with standard outlet fittings, but the water jet quickly becomes constricted and erratic, failing to maintain transparency over a long distance
Solution Approach 1:
The patent transitions from a conventional round cross-section to an elongated rectangular cross-section with aspect ratio between 2:1 and 4:1. This dimensional change creates a flat water jet band that maintains its form over longer distances by distributing flow across a broader, flatter geometry, preventing the constriction and erratic behavior seen in circular jets.
Solution Approach 2:
The flow guide features edge regions with larger throughflow cross-sections compared to the longitudinal middle region. This local variation in cross-sectional area creates directed jets at the corners that interconnect to form the overall flat jet band, with the edge regions contributing more volume to maintain jet stability at the boundaries.
2Shape
If the water outlet has a greater clear throughflow width in comparison to depth, then an aesthetically sophisticated outlet fitting is achieved, but the water jet becomes constricted into an erratic non-round jet form after a short distance
Solution Approach 1:
The patent specifies an aspect ratio for the elongated rectangular cross-section between 2:1 and 4:1 (width to depth). This parameter optimization balances aesthetic requirements for a wide, flat outlet with hydrodynamic considerations to maintain stable jet formation over distance, preventing erratic behavior while achieving the desired sophisticated appearance.
3Duration of action of moving object
If a flow guide with edge regions of larger throughflow cross section is used, then directed jets are created in corner regions that maintain transparency, but the device complexity increases
Solution Approach 1:
The flow guide cross-section is segmented into edge regions with larger throughflow areas and a longitudinal middle region with smaller cross-section. This segmentation creates distinct corner jets that interconnect to form the overall flat jet band, allowing each region to be optimized for its specific function while maintaining overall structural simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution maintains a clear, flat water jet over a long distance with reduced turbulence, achieving a stable and transparent jet pattern by directing jets in the corner regions and forming a central film, while allowing for adjustable edge definition and easy assembly.
Implementation Method 1
a flow guide, which tapers in a nozzle-like manner in the throughflow direction at least in one section
Implementation Method 2
a homogenizing device with a multiplicity of throughflow holes which are delimited in each case by flow-guiding walls
Data Source
AI summary
A jet former (1), which can be fitted into the water outlet (2) of a sanitary outlet fitting and has at least one homogenizing device (3) with a multiplicity of throughflow holes (4), which are respectively enclosed by flow guiding walls (5). The jet former (1) has a greater jet width (1) in comparison with the jet depth (t) to create a flat water jet, by a flow guide (6) that tapers in a nozzle-like manner, at least in a partial region in the direction of throughflow, being arranged upstream or downstream of the at least one homogenizing device (3) and by the flow guide (6) having on both sides of its longitudinal extent edge regions (7, 8) with a greater throughflow cross section in comparison with the longitudinal center region (9). While a smooth, homogenized jet with a transparent, clear jet pattern can be formed with the aid of the homogenizing device (3) and its throughflow holes (4) enclosed by flow guiding walls (5), this jet can be continued as a clearly contoured, flat water jet over a comparatively long free distance by the flow guide (6).