Water Bar Suction Chamber With Air Injection for Mist Control
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Solution Overview
Problem
Existing water bars for jet treatment of woven fabrics, knitted fabric webs, or nonwovens inadequately manage spray water and mist, leading to droplet formation on the water bar and potential visual impairment of fabrics.
Innovation Solution
Integration of an air supply device with outlet openings into the nozzle openings of the water bar, which prevents the water jet from widening excessively and ensures even suction of splashing water, utilizing a nozzle design with varying angles and a perforated suction surface for uniform air flow and droplet collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional water bar is used without air supply, then the structure is simple, but the water jet widens excessively and spray water cannot be effectively removed
Solution Approach 1:
The patent combines the air supply device with the water bar structure, integrating air injection functionality into the existing water delivery system. The air supply device is positioned to deliver air directly into the water jet path, merging two functional systems (water delivery and air injection) into a unified structure that achieves both jet focusing and spray water removal without requiring separate complex apparatus
Solution Approach 2:
The patent utilizes pneumatic principles by introducing air into the water jet stream. The air supply device creates a two-phase flow (air and water) that leverages gas-liquid interaction to maintain jet coherence and prevent excessive widening. The pneumatic action of injected air provides both structural support to the water jet and enhanced suction capability for removing spray water
2Productivity
If the nozzle opening is narrow to maintain jet focus, then spray water removal is improved, but the water jet cannot effectively treat the fabric surface
Solution Approach 1:
The patent changes the physical parameters of the water jet by introducing air, which modifies the flow characteristics, velocity distribution, and pressure profile of the water stream. This parameter change allows the jet to maintain focus while increasing its effective treatment capability on the fabric surface, simultaneously reducing harmful spray water formation through optimized flow dynamics
3Productivity
If air supply is added to prevent water jet widening, then spray water removal is enhanced, but the device complexity increases
Solution Approach 1:
The air supply device is designed to perform multiple functions simultaneously: it prevents water jet widening, enhances spray water removal through improved suction dynamics, and maintains jet focus. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in overall device complexity while achieving multiple performance improvements
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 creates a nearly drip-free water beam that prevents water droplets from falling on fabrics, ensuring a focused water jet and uniform suction of spray water over the entire surface, thus avoiding visual impairment and effective water management.
Implementation Method 1
the water bar and/or the suction chamber is assigned an air supply device which is equipped with at least one outlet opening which is provided in the area of the water bar and extends into the area of the nozzle openings of the water bar
Implementation Method 2
a suction surface provided on a lower side of the suction chamber for sucking off spray water
Data Source
Figure 1~4
Figure 2
Figure 3
AI summary
The invention relates to a water bar (1a) comprising nozzle ports (10c) for a suction chamber (5a) to apply jets to fabrics, knitted fabric webs, or nonwoven fabrics (2) composed of staple fibers, endless filaments, or cellulose fibers, also in several layers, or mixtures thereof, and a suction area (3a, 3b) which is located on the bottom side (5b) of the suction chamber (5a) and is used for sucking off spraying water (4). The aim of the invention is to largely prevent spraying water or spraying mist in the region of the water jet that is discharged from the water jet beam. Said aim is achieved by assigning an air supplying device (11a) to the water bar (1a) and/or the suction chamber (5a), said air supplying device (11a) being provided with at least one outlet (11c) which is located in the region of the water bar (1a) and extends to the region of the nozzle ports (10c) of the water bar (1a).