Oven structure

Abstract

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.

Claims

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.

2. The oven structure of claim 1, further comprising an access door provided in one of the walls of the cooking cavity.

3. The oven structure of claim 1, further comprising a gas burner positioned under the floor, and a grating in the floor for allowing hot combustion gases and heated air to flow upwardly into the cooking cavity.

4. The oven structure of claim 1, wherein the damper is an L-shaped damper.

5. The oven structure of claim 2, wherein the first damper section and the second damper section are joined at an apex.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) The invention will be understood further from the drawings herein wherein:

(2) FIG. 1 is a cross-sectional view of a prior art venting system;

(3) FIG. 2 is a cross-sectional view of a prior art venting system;

(4) FIG. 3 is a cross-sectional view of a gas fired cooking oven employing the present energy saving damper in operative position;

(5) FIG. 4 is a view as in FIG. 3 with the burner in off mode;

(6) FIG. 5 is a view as in FIG. 3 with the broil unit on; and

(7) FIG. 6 is a view as in FIG. 3 with broil unit and gas burner off.

(8) Referring to the drawings and with particular reference to the claims herein, the present gas fired cooking oven comprise a shell generally designated 10 formed by wall means 12 providing a cooking cavity 14, the wall means including side walls, a top wall and a floor, an access door 16 provided in a wall, a gas (flammable) burner 18 positioned under the floor, a grating 20 in the floor for allowing hot combustion gases and heated air to flow upwardly into the cooking cavity. A top cavity vent 22 is provided thru an upper portion of the wall means, a bottom cavity vent 24 formed thru a lower portion of the wall means, and a chimney 26 is provided by the wall means on an exterior portion of the wall means forming the cavity and exiting adjacent a top portion of the oven structure and communicating with the top and bottom cavity vents. A right angle damper means 28 having apex 30 as its pivot is mounted in the chimney and having (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. The damper means has two damper sections 32, 34 oriented at a right angle to each other and pivotally mounted at the angle apex to the wall means at the juncture of the top cavity vent and the chimney.

(9) The invention has been described in detail with particular reference to preferred embodiments thereof, but it will be understood that variations and modifications will be effected within the spirit and scope of the invention.