Built-in self-cleaning wall oven

Claim 1

A built-in wall oven of the pyrolytic self-cleaning type including: an oven liner forming an oven cavity having an open front; a door for closing said open front; thermal insulation surrounding said liner on the top, bottom, rear and opposite sides thereof; wall means spaced outwardly from said insulation along at least the top, rear and opposite ones of said sides to define airflow passages in open communication with each other; means defining an air inlet across substantially the entire front width of said oven and at a location below said oven to admit room air to said passages; a control and wiring chamber overlying said top air passage and having a control panel forming the front wall of said chamber; an air outlet opening for said passages at the front of said air passage, said air outlet opening being located between said control panel and the top portion of said door; an oven exhaust gas duct having an inlet communicating with said oven cavity and extending for at least half the depth of the oven in said top air passage to place said duct in open heat transfer relation with the air passing through said top air passage, said duct having a discharge opening between said top of said door and said control panel; a metallic panel overlying said thermal insulation on the top of said oven cavity and forming the bottom wall of said top air passage; means securing said exhaust duct to said metallic panel in relatively good heat conducting relation to promote the transfer of heat from said exhaust duct to said metallic panel; thermal insulation overlying said wall means forming the top wall of said top passage to thermally insulate said control chamber from said top passage; and said airflow passages being devoid of air flow inducing means therein whereby the airflow through said passages results from free convection of room air in accordance with the emission of heat from said oven.