| 摘要 |
<p>The stove (1) has a combustion chamber divided into lower and upper zones supplied directly with primary and secondary air via primary and secondary air inlets, respectively. The secondary air is preheated in a duct that is in thermal contact with the chamber. A heat exchanger i.e. boiler (2), is located in the chamber. The boiler is in the form of a conduit or coil (2) equipped with radial fins (3) or axial fins and arranged in the upper zone of the chamber. An independent claim is also included for a central heating system comprising a surge drum.</p> |
