Plugged Honeycomb Structure with Round Cells

The patent applies spheroidality by forming round cells with curved partition walls instead of conventional polygonal cells. The circular-arc partition walls distribute thermal stress uniformly during regeneration treatment, preventing stress concentration at sharp corners that would otherwise cause cracks. This curvature modification allows effective high-temperature regeneration while maintaining structural integrity and longevity of the honeycomb structure.

The patent transforms conventional polygonal cells into round cells by forming circular-arc partition walls. This curvature eliminates sharp corners where thermal stress would concentrate during regeneration, distributing stress uniformly throughout the structure. The round cell configuration significantly improves resistance to thermal stress and prevents crack formation while maintaining manufacturing feasibility through controlled deformation processes.

The round cell structure with circular-arc partition walls enables more efficient heat distribution during regeneration treatment. The curved geometry promotes uniform thermal fields and reduces hot spots, allowing complete particulate matter removal at lower temperatures or shorter durations. This significantly reduces fuel consumption and energy costs while maintaining high purification efficiency, as the structure achieves effective regeneration without prolonged high-temperature exposure.