| 摘要 |
PURPOSE:To prevent a reduction of heat exchanging efficiency and mixing of heat exchanging gas by shifting the sector plate located on the downstream side by a predetermined phase in the rotational direction of the rotary heat accumulating part and discharging the other gas out of the gas feed port disposed in the surface opposite to the rotary heat accumulating part of the sector plate located on the upstream side. CONSTITUTION:The sector plate 7a located on the downstream side in reference to the flow direction of burnt gas that flows as shown by fat arrow 8 is staggered relative to the upstream side sector plate 7a by a predetermined phase in the rotational direction of the rotary heat accumulating part A. A gas feed port 11 having a length from the periphery of the fluid passage 3 to the center is disposed in the leading area of the upstream side sector plate 7a in reference to the rotational direction of the rotary heat accumulating part A. Further, one end of a scoop pipe 12 is connected to the gas feed port 11, and the outer end of said scoop pipe 12 is routed to avoid the rotation area of the rotary heat accumulating part A and is situated in the upstream area of the rotary heat accumulating part A for air passage Y.
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