| 摘要 |
A heating apparatus for combusting a fuel-air mixture which includes a combustion chamber with an inlet at one end and a combustion outlet at the other end, a catalyst-containing substrate disposed in the combustion chamber, a fuel supply in communication with the inlet for supplying fuel, and a fuel-air mixing assembly for providing a uniform fuel-air mixture to the combustion chamber. The mixing assembly includes one or more openings for drawing a controlled proportion of primary air which is mixed with the fuel and combusted in the combustion chamber. The use of primary air improves efficiency and reduces the reliance on secondary air. Limiting the proportion of primary air to approximately 15-20% of the stoichiometric mass of air required substantially reduces the emission of hazardous combustion by-products such as carbon monoxide.
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