Multi-chamber fluid degassing device for high-viscosity resin
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Solution Overview
Problem
Existing methods for degassing synthetic resins, such as vacuum stirring and thin-layer degassing, are inefficient due to the high viscosity of resins, which allows gas bubbles to rise slowly to the surface, requiring long residence times and incomplete degassing.
Innovation Solution
A fluid degassing device with a multi-chamber design featuring non-woven and mesh structural elements, adjustable inclination, and profile members to increase the surface area of the resin, facilitating bubble breakdown and enhanced degassing through controlled flow and vacuum operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If thin-layer degassing is used to improve degassing efficiency, then the surface area for bubble release is increased, but the residence time required remains excessively long due to high resin viscosity
Solution Approach 1:
The device divides the degassing process into multiple chambers (first chamber with non-woven material, second chamber with mesh, third chamber with convex elements), each segment contributing to bubble breakdown and removal. This segmentation allows progressive degassing without requiring excessively long residence times in a single chamber.
Solution Approach 2:
The patent employs non-woven material and mesh structures as porous media to facilitate bubble breakdown and gas release. These porous materials provide numerous pathways for bubbles to escape from the high-viscosity resin, significantly improving degassing efficiency while maintaining reasonable residence times.
2Productivity
If vacuum stirring is used to degass resin, then gas bubbles can be removed from the surface region, but degassing is ineffective in the bulk material due to high viscosity preventing bubble rise
Solution Approach 1:
Different chambers provide different local conditions for degassing: the first chamber uses non-woven material for initial bubble capture, the second chamber uses mesh for further breakdown, and the third chamber uses convex elements for final surface exposure. Each region is optimized for its specific function in the progressive degassing process.
Solution Approach 2:
The patent transitions from surface-only degassing (2D) to volumetric degassing (3D) by distributing porous materials and structural elements throughout multiple chambers. This dimensional expansion allows bubbles throughout the bulk resin to be captured and removed, not just those at the surface.
3Manufacturing precision
If long residence times are used to allow bubbles to rise to the surface, then complete degassing can be achieved, but production efficiency is severely reduced
Solution Approach 1:
The non-woven material and mesh structures in the first and second chambers perform preliminary bubble breakdown and capture before the resin reaches the discharge point. This preliminary action prevents bubbles from needing to travel the full length of a single chamber, reducing the required residence time while maintaining degassing completeness.
Solution Approach 2:
The multi-chamber design ensures continuous bubble breakdown and removal throughout the resin's passage. Rather than relying on a single long residence time, the useful degassing action continues progressively through each chamber, achieving complete degassing in a shorter overall time and increasing production efficiency.
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 device achieves degassing of over 90% of the resin, improving the structural integrity of composite materials by efficiently removing air inclusions, suitable for manufacturing wind power installation rotor blades and other components.
Implementation Method 1
at least one structural element for breaking down bubbles in the fluid as it flows through the structural element
Implementation Method 2
the resin is introduced into stirring containers and stirred under vacuum
Data Source
AI summary
The invention concerns a fluid degassing device for degassing fluids, in particular resins. The device has a fluid supply element for supply of the fluid and a fluid discharge element for discharge of the fluid. Between the supply element and the discharge element there is at least one structural element for breaking down bubbles in the fluid as it flows through the structural element. In addition or alternatively there may be provided at least one profile element, over which the fluid must flow.