Fireplace with ceramic fiber duct
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 30, 1997
Grant Date -
N/A
app pub date -
Dec 15, 1995
filing date -
Feb 28, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fireplace having a low density ceramic fiber duct with a first duct portion which promotes secondary combustion of unburned products of combustion and a second duct portion which removes products of combustion from the front of the combustion chamber. The ceramic fiber duct is positioned within the fireplace at a location along the flow path of the products of combustion that is intermediate the fireplace combustion chamber and flue. The first ceramic fiber duct portion includes a number of horizontally spaced and longitudinally extending circuitous, internal passageways which define the flow path as well as segregate the products of combustion. Due to their ceramic fiber construction, the passageways heat up quickly to promote secondary combustion of combustion products therein soon after fire ignition. In addition, the passageways are structured such that the combustion products must cover an extended exhaust path, which lengthens their stay within the heated passageways and promotes secondary combustion. The second ceramic fiber duct portion includes a passageway through which combustion products near the front of the combustion chamber can be drawn into a venturi passageway and then exhausted through the flue.
First Claim
Other Claims data not available