Absorption Rotor Drop-off Prevention Member
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Solution Overview
Problem
Conventional absorption rotors face issues with the honeycomb body detaching from the spoke due to adhesion failure under high temperature conditions, leading to potential damage from wind pressure when metal fittings are used for fixation.
Innovation Solution
The absorption rotor design incorporates plate members extending radially from the rotation axis, a tubular outer edge member, and a drop-off prevention member fixed to both the absorption member and plate members, preventing the absorption member from dropping off while minimizing damage by avoiding attachment to gas passage surfaces and using a reduced number of welding points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the honeycomb body and spoke are adhered via caulking material, then the assembly is simple, but the adhesion is removed under high temperature conditions causing the honeycomb body to drop off
Solution Approach 1:
A drop-off prevention member is introduced as an intermediary component between the honeycomb body and the spoke. This member has a first fitting portion that fits into the spoke and a second fitting portion that fits into the honeycomb body, providing mechanical interlocking that prevents drop-off under high temperature conditions while maintaining assembly simplicity.
2Reliability
If metal fitting is used to fix the honeycomb body, then the honeycomb body is secured from dropping off, but the honeycomb body is buckled by wind pressure due to attachment on the flow passage surface
Solution Approach 1:
The drop-off prevention member transitions the fixation approach from a two-dimensional surface attachment (metal fitting on the end surface) to a three-dimensional interlocking structure. The first fitting portion extends in the radial direction from the hub, and the second fitting portion fits into a groove on the side surface of the honeycomb body, creating mechanical interlocking that secures the honeycomb body without attaching to the flow passage end surface, thus avoiding wind pressure buckling.
3Reliability
If the drop-off prevention member is fixed to the absorption member, then the absorption member is secured, but welding points are exposed to the exterior affecting design property
Solution Approach 1:
The welding operation is extracted and relocated to the hub portion, which is positioned inside the rotor element. The first fitting portion of the drop-off prevention member extends radially from the hub, allowing welding to be performed at the hub location rather than on the exterior surface of the rotor element, thus maintaining design property while ensuring reliable attachment.
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 effectively prevents the absorption member from dropping off while reducing damage and enhancing the assembly process, ensuring the absorption member is securely attached without buckling due to wind pressure.
Implementation Method 1
an absorption member (11) which absorbs a substance to be absorbed when a gas passes through
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention is to prevent an absorption member from dropping off while reducing damage to the absorption member. An absorption rotor 1 includes plural spokes 3 extending in a radial manner from the circumference of the rotation axis, a tubular rim 4 coupling end portions of the plural spokes 3, an absorption member 11 accommodated in a space which is surrounded by the plural spokes 3 and the rim 4, the absorption member that absorbs a substance to be absorbed when a gas passes through, and a drop-off prevention member 12 respectively fixed to the spoke 3 and the absorption member 11, the drop-off prevention member that prevents the absorption member 11 from dropping off the spoke 3. The drop-off prevention member 12 is arranged between the absorption member 11 and the spoke 3, and between a surface from which the gas flows into the absorption member 11 and a surface from which the gas flows out of the absorption member.