Patent ID: 9038576
Filing Date: 2015-05-26
Classification: F23D,F24H

Abstract:
1. A burner box, comprising: (a) a housing bounded by at least one sidewall, the housing having a top and an opposite bottom, the top and the bottom each open so that the sidewall defines an open passage that is configured to allow substantially unimpeded vertical convective airflow upwardly from the bottom so that 100% of all combustion air flows upwardly from the open bottom; and (b) a fuel tube extending into the passage defined by housing, the fuel tube having an inner cavity that is confined by a tube wall and that is in fluid communication with a fuel connection port outside of the housing, the tube wall defining a plurality of spaced apart orifices passing therethrough that are configured to distribute fuel received through the fuel connection into the open passage defined by the sidewall of the housing, the fuel tube disposed at a distance from the top of the housing so that substantially all of the fuel distributed from the fuel tube is entrained by the combustion air before the fuel reaches the top of the housing, thereby forming a substantially homogenous fuel/air mixture; and (c) a porous heat dissipating surface disposed across the top of the housing, the porous heat dissipating surface configured to support a flame resulting from combustion of the fuel/air mixture, the porous heat dissipating surface including enough open area so that the fuel/air mixture passes through the porous heat dissipating surface substantially unimpeded, the porous heat dissipating surface configured to dissipate heat from the flame and to prevent flashback of the flame into the housing,