| 摘要 |
A cooking oven structure of conventional construction having a top vent provided thru an upper portion of the oven wall forming a cooking cavity, a bottom vent formed thru a lower portion of the wall, a chimney mounted on an exterior portion of the wall and exiting adjacent a top portion of the oven structure and communicating with the top and bottom cavity vents, and a damper mounted in the chimney and having a right angle configuration and pivotal about its apex to (a) a first position blocking gas flow both thru the top cavity vent and the chimney, (b) a second position blocking gas flow only thru the top cavity vent, and (c) a third position blocking gas flow only thru the chimney. |
| 主权项 |
1. An oven structure, comprising:
a cooking cavity comprising side walls, a top wall and a floor; a top cavity vent provided at an upper portion of the cooking cavity; a bottom cavity vent provided at a lower portion of the cooking cavity; a chimney provided exterior to the cooking cavity, wherein the chimney is adapted to communicate with the top cavity vent and the bottom cavity vent; and a damper pivotably mounted only at the top cavity vent in an exhaust flow path, comprising a first damper section and a second damper section orthogonally connected at their edges at a pivot point, wherein the damper is operable to effect gas flow in:
(a) a first position blocking gas flow both through the top cavity vent and the chimney, wherein the first damper section blocks gas flow through the chimney and wherein the second damper section blocks gas flow through the top cavity vent;(b) a second position blocking gas flow only through the top cavity vent, wherein the first damper section blocks gas flow through the top cavity vent; and
(c) a third position blocking gas flow only through the chimney, wherein the second damper section blocks gas flow through the chimney. |
