| 摘要 |
A portable heating unit which may quickly and easily be installed in an existing fireplace construction is described. The heating unit, with a controlled adaptable damper system, greatly increases the burning efficiency of the fuel and is designed to provide a circulating warm air stream for heating a room. The heating unit can quickly and easily be moved from the fireplace opening to restore the fireplace to its original operation when the extra heat is no longer needed. |
