发明名称 Fireplace closures
摘要 A fireplace closure containing means for supplying an additional amount of air to assist combustion of the logs, coal and the like in the fireplace grate at the time a fire is first started. The invention includes means for cutting off the additional amount of air after the fire is burning satisfactorily. The invention is well adapted for combination with a heat exchanger having forced air circulation and in such case the forced air is first delivered under the fireplace grate to assist combustion during the start of the fire. When the fire has caught satisfactorily, the forced air is then directed through the heat exchanger and is no longer delivered to the grate area. Included in this application are means to adapt and secure a fireplace closure of standard dimensions to fireplace openings of variable dimensions.
申请公布号 US4303056(A) 申请公布日期 1981.12.01
申请号 US19790067757 申请日期 1979.08.20
申请人 SLAVIK, JOHN W.;SHAFER, NANCY L. 发明人 SLAVIK, JOHN W.;SHAFER, NANCY L.
分类号 F24B1/19;(IPC1-7):F24B7/00 主分类号 F24B1/19
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