Door for self clean cooking appliance

Abstract

A door for a self-clean cooking appliance, such as an oven, is constructed to maintain a low external surface temperature during high temperature operations within the appliance. The door includes three glass panes in spaced apart relation where the spacing between an outermost glass pane and a central glass pane is greater than the spacing between an innermost glass pane and the central glass pane.

What is claimed is: 
     
         1 . A door for a self-clean cooking appliance comprising:
 a glass pack comprising a first glass pane and a second glass pane; and   a third glass pane positioned in a spaced apart relationship from the glass pack,   wherein the third glass pane is a decorative glass pane,   wherein at least one of the first glass pane and the second glass pane is a low-emissive glass pane, and   wherein a first open space is provided between the second glass pane and the third glass pane and a second open space is provided between the first glass pane and the second glass pane, a thickness of the first open space being greater than a thickness of the second open space.   
     
     
         2 . The door of  claim 1 , wherein the first glass pane is positioned closest to a cooking cavity and has an emissivity of less than 0.21. 
     
     
         3 . The door of  claim 1 , wherein the glass pack includes a frame positioned around a periphery of the first glass pane and the second glass pane such that the second open space is substantially air-tight. 
     
     
         4 . The door of  claim 1 , wherein the thickness of the first space is greater than 15 mm and the thickness of the second open space is less than 10 mm. 
     
     
         5 . The door of  claim 1 , wherein the thickness of the first open space is at least 20 mm and the thickness of the second open space is less than 10 mm. 
     
     
         6 . The door of  claim 1 , further comprising an inner door panel and a wool shield, the glass pack being secured between the inner door panel and the wool shield. 
     
     
         7 . The door of  claim 6 , further comprising an outer door panel secured to the third glass pane, wherein the outer door panel has a top surface that does not include any vent openings. 
     
     
         8 . The door of  claim 1 , wherein an overall thickness of the door is between 40 mm and 45 mm. 
     
     
         9 . The door of  claim 8 , wherein a distance between the first glass pane and the second glass pane is less than 10 mm and a distance between the second glass pane and the third glass pane is at least 20 mm. 
     
     
         10 . A door for a self-clean cooking appliance comprising:
 an outer door panel;   an inner door panel spaced from the outer door panel;   a wool shield positioned between the outer door panel and the inner door panel; and   no more than three glass panes positioned between the outer door panel and the inner door panel,   wherein the three glass panes include an outermost glass pane, a central glass pane, and an innermost glass pane, and   wherein a distance between the outermost glass pane and the central glass pane is greater that a distance between the innermost glass pane and the central glass pane.   
     
     
         11 . The door of  claim 10 , wherein the distance between the outermost glass pane and the central glass pane is at least one and one-half times the distance between the innermost glass pane and the central glass pane. 
     
     
         12 . The door of  claim 10 , wherein the distance between the inner door panel and the outer door panel is less than 45 mm. 
     
     
         13 . The door of  claim 12 , wherein a distance between the outermost glass pane and the central glass pane is greater than 15 mm. 
     
     
         14 . The door of  claim 13 , wherein a distance between the innermost glass pane and the central glass pane is less than 10 mm. 
     
     
         15 . The door of  claim 10 , wherein the wool shield is positioned between the central glass pane and the outermost glass pane. 
     
     
         16 . The door of  claim 10 , wherein air flow is permitted between the outermost glass pane and the central glass pane and blocked between the innermost glass pane and the central glass pane. 
     
     
         17 . A door for a self-clean cooking appliance comprising:
 a decorative glass pane;   a glass pack having at least one low-emissive glass pane, the glass pack being spaced from the decorative glass pane; and   a wool shield positioned around a periphery of the glass pack, the wool shield being spaced from the decorative glass pane,   wherein a bottom portion of wool shield is sloped to facilitate high velocity air flow from a bottom of the door into a space behind the decorative glass pane.   
     
     
         18 . The door of  claim 17 , wherein the glass pack includes a low-emissive glass pane adjacent a cooking cavity of the cooking appliance and an uncoated glass pane spaced from the low-emissive glass pane, wherein a space between the uncoated glass pane and the low-emissive glass pane is substantially airtight. 
     
     
         19 . The door of  claim 18 , wherein a distance between the uncoated glass pane and the low-emissive glass pane is less than 10 mm, and wherein a distance between the decorative glass pane and the low-emissive glass pane is greater than 20 mm. 
     
     
         20 . The door of  claim 17 , wherein the glass pack includes two low-emissive glass panes in a parallel and spaced apart relationship and wherein a space between the uncoated glass pane and the low-emissive glass pane is substantially airtight.