Surface Spray Coating Using Carrier Gas to Reduce Overspray
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Solution Overview
Problem
The inefficiency of coating applications due to overspray and environmental issues caused by atomized coating particles escaping and depositing in unwanted areas, leading to low material efficiency and environmental impact.
Innovation Solution
A system comprising a conditioning hood with a spray chamber and a carrier gas installation to control the flow and direction of atomized coating particles, utilizing concentric walls and gas extraction to minimize overspray, and a central control system to adjust parameters based on particle sensor data for enhanced control and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spray coating tool is operated at relatively short distance from object surface, then coating application efficiency is improved, but atomised coating particles escape and deposit on unwanted areas due to wind and environmental factors
Solution Approach 1:
A carrier gas installation is introduced as an intermediary substance between the spray coating tool and the object surface. The carrier gas flows through the spray chamber and carries the atomised coating particles toward the object, controlling their trajectory and preventing escape due to wind or environmental factors while maintaining efficient coating application at short distances
2Object-generated harmful factors
If carrier gas is provided to control atomised coating particles, then overspray is reduced, but device complexity increases
Solution Approach 1:
The carrier gas installation serves multiple functions simultaneously: it carries the atomised coating particles from the spray tool to the object surface, controls particle trajectory and distribution, and can be integrated with existing spray chamber structures. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while effectively reducing overspray
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
Reduces overspray and enhances coating quality by optimizing the spraying conditions, improving material efficiency and environmental impact through precise control of particle distribution and flow.
Implementation Method 1
a carrier gas installation in communication with the coating tool mounting end of the conditioning hood or with the coating tool, adapted to provide a carrier gas that in operation carries the atomised coating
Data Source
AI summary
The present invention relates to a system (1) and a method for coating a surface (3a) of an object (3) with a spray coating tool (2) spraying atomised coating particles (10) onto. A conditioning hood (20) is applied defining a spray chamber. In operation the spray coating tool (2) is mounted at a coating tool mounting end (21), and an output end (22) is positioned in proximity of the surface (3a) of the object (3) to be coated. The spray coating tool (2) is operated to spray atomised coating particles (10) which travel from the coating tool (2), through the spray chamber and the output end (22) to the surface (3a) of the object (3). A carrier gas is injected that in operation carries the atomised coating particles (10) to the surface (3a) of the object (3).