Coating booth and flow-straightening device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coating booths have large air supply chambers due to a double-layer structure, leading to high running costs, and proposed single-layer structures with bag filters result in high operational expenses.
Innovation Solution
A flow-straightening device with a plurality of fins extending in the air supply chamber's width and depth directions, spaced apart in the thickness direction, is used to straighten air flow from the air supply duct to the coating chamber via a filter at the boundary wall, reducing the need for a two-layer structure and periodic filter replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a double-layer structure air supply chamber is used, then air flow turbulence is reduced, but the air supply chamber size increases
Solution Approach 1:
The invention transitions from a vertical double-layer structure to a horizontal single-layer structure with fins. Instead of stacking chambers vertically (requiring more height), the fins extend horizontally within a single chamber layer, redirecting air flow in the width direction to achieve flow stabilization without increasing overall chamber volume.
Solution Approach 2:
The air supply chamber is segmented into multiple regions by the fins, which divide the air flow into separate pathways. This segmentation allows the air to be guided smoothly through defined channels, reducing turbulence while maintaining a compact single-layer chamber design.
2Volume of stationary object
If a single-layer structure air supply chamber with bag filter is used, then air supply chamber size is reduced, but running costs increase
Solution Approach 1:
The invention replaces the expensive bag filter with a simple, low-cost fin structure made from inexpensive materials. The fins perform the flow control function without requiring periodic replacement, eliminating the running costs associated with filter maintenance while maintaining the compact single-layer chamber design.
Solution Approach 2:
The fin structure provides passive flow control without requiring external power or periodic maintenance. The fins automatically guide air flow through their geometric configuration, eliminating the need for energy-consuming filtration systems and reducing operational expenses.
3Ease of operation
If air is supplied laterally to the air supply chamber, then air distribution is achieved, but air flow turbulence increases
Solution Approach 1:
The fins are designed with curved surfaces that smoothly redirect air flow from the lateral supply direction toward the coating chamber. The curved geometry of the fins gradually changes the flow direction, reducing abrupt transitions and minimizing turbulence while maintaining effective air distribution.
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 design downsizes the air supply chamber, reduces running costs by minimizing turbulence and noise, and ensures efficient air distribution to the coating chamber.
Implementation Method 1
the air in the dynamic pressure chamber is allowed to flow down to enter the static pressure chamber via a flow-straightening plate, so that the air becomes less prone to become turbulent
Data Source
AI summary
A flow-straightening device at a coupling portion between: an air supply chamber adjacent to a coating chamber and supplying air to the coating chamber via a filter provided at a boundary wall between the air supply chamber and the coating chamber; and an air supply duct supplying air to the air supply chamber in a direction along the boundary wall. When a direction parallel to the boundary wall and perpendicular to the air supply chamber width direction is an air supply chamber depth direction; and a direction perpendicular to the boundary wall is an air supply chamber thickness direction, the device includes a plurality of fins arranged in the air supply chamber width direction and the air supply chamber depth direction and juxtaposed to each other to be spaced apart from each other in the chamber thickness direction.