| 摘要 |
A casing has a plurality of upright panel-type compartments disposed in spaced relation for allowing flue gases and smoke to circulate therebetween. A blower circulates room air through the compartments and back into the room. A cross shaft is mounted in the casing adjacent the top thereof and extends across the spaces between the compartments. Levers are integrated with the cross shaft and support chains in suspended relation between the compartments. The shaft has a projecting handle which when operated is used to oscillate the chains to knock off soot and creosote from the exterior surfaces of walls of the compartments.
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