Angled Air Flow for Overspray Reduction in Vehicle Painting Booths
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Solution Overview
Problem
Modern painting systems for motor vehicle body components face challenges in reducing overspray within the painting booth, particularly due to increased turbulence and lower air flow speeds, which lead to inefficient paint application and contamination of subsequent components.
Innovation Solution
A separate, angled downward air flow is introduced to complement or replace the conventional filter ceiling's air flow, utilizing a movable manipulator with multiple axes to target and reduce overspray, either by blowing or suction, and optimizing the air flow direction and speed to enhance cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter ceiling is used to generate downward air flow for reducing overspray, then overspray reduction is achieved, but the air flow speed is limited due to filter resistance
Solution Approach 1:
The air flow generation is divided into two independent parts: the filter ceiling provides a baseline downward flow, while additional air nozzles positioned at the booth entrance provide an accelerated air stream. This segmentation allows each component to optimize its function without the other's limitations.
Solution Approach 2:
Air nozzles positioned at the booth entrance act as intermediaries to accelerate the air stream before it enters the booth interior. This intermediary device overcomes the filter resistance limitation by providing an initial boost to the air flow speed.
2Productivity
If motor vehicle body components are conveyed in stop-and-go operation, then productivity is reduced, but high accelerations cause air turbulence that prevents quick overspray removal
Solution Approach 1:
Air nozzles are positioned at the booth entrance to provide preliminary air flow acceleration before components enter the booth. This preliminary action prepares the air environment to quickly counteract turbulence generated during stop-and-go operations, enabling faster overspray removal.
3Object-affected harmful factors
If the downward air flow passes through a filter in the filter ceiling, then overspray is captured, but the filter offers flow resistance that limits flow speeds
Solution Approach 1:
The air flow path is segmented into an acceleration zone at the entrance (without filter resistance) and a capture zone within the booth (with filter ceiling). This allows the system to achieve high flow speeds where needed while maintaining overspray capture capability.
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
This approach effectively reduces overspray within the painting booth, minimizing contamination between components and improving the efficiency of the painting process, even during stop-and-go operations, by focusing the cleaning action on the region where overspray escapes, thus ensuring quicker and more thorough removal.
Implementation Method 1
a separate air flow device is provided which is arranged to deliver a downwardly directed air stream into the painting booth for reducing the overspray from the booth interior
Data Source
AI summary
The disclosure relates to an operating method for a coating system, in particular for a painting system, for coating components (2), in particular motor vehicle body components (2), having the following steps:conveying, by means of a conveying device (3), the components (2) to be coated in a conveying direction through a coating booth (1),coating the components (2) in the coating booth (1) with a coating product by means of an application device (17-19) which applies a spray jet of the coating product, a portion of the applied coating product being deposited on the components (2) to be coated while another portion of the applied coating product floats into the interior of the coating booth (1) as an excess coating product mist (21), andreducing the excess coating product mist (21) from the interior of the booth by means in addition to or other than the downwardly directed air flow generated by a filter ceiling. In addition, the disclosure includes a correspondingly designed coating system.