| 摘要 |
A heat exchanger, especially useful for warm air furnaces alone or in combination with air-conditioning apparatus, in which a flame is directed into the end of an elongated tube, the hot products of combustion flowing into the tube and being vented from the opposite end. Novel features include a push-pull, forced draft blower arrangement combined with positive pressure, tangential air entry to the heat exchanger tube in order to control the combustion rate and promote heat flux in said tube. |
