| 摘要 |
<p>A horizontally elongated hollow body constructed of heat resistant material is provided and closed at its opposite ends by means of upstanding end wall structures. The body includes a flue gas outlet centrally intermediate the opposite ends thereof and one end wall structure includes an access opening with which a closure door, shiftably supported from the corresponding end of the body, is operatively associated for movement between an open and closed positions relative to the access opening. The door and the opposite end wall structure of the body each include combustion air inlet structure for admitting combustion air into the interior of the body and structure is provided for variably throttling the inflow of combustion air. The flue outlet opens outwardly of an upper portion of one longitudinal side of the body and the other longitudinal side of the body defines a viewing aperture therein closed by a transparent heat resistant panel. The hollow body is supported atop a pedestal and the combustion air inlet means at opposite ends of the body are disposed at different elevations. Further, the cross-sectional area of the flue gas outlet is considerably greater than the cross-sectional area of the combined combustion air inlet structure, whereby combustion air is jetted into the opposite ends of the body at different elevations for enhancing more complete combustion of combustible materials and gases within the hollow body.</p> |
