Oven combustion products distribution system

Claim 1

A convection oven heated by combustion gases having, spaced opposed side walls, spaced opposed front and back walls and spaced opposed top and bottom walls which define the oven cavity, means located on said front wall to permit access to said cavity, gas inlet means associated with the underside of said bottom wall which conducts combustion gases from a burner to the base of each side wall, said gas inlet means dividing the flow of combustion gases into two streams which are delivered to separate oven manifolds beneath each oven side wall, said manifolds having undersized orifices which communicate with each of said channels through which the combustion gases pass under pressure in a turbulent stream, gas conduction means associated with each of said side walls and said top wall adapted to conduct said combUstion gases from said gas inlet means in a plurality of separate and substantially uniform streams in a vertical direction along and in contact with each of said side walls and then in a horizontal direction across and in contact with said top wall, said gas conduction means being composed of a plurality of gastight channels in heat conducting relationship with said oven side and top walls, and exhaust means on said top wall in communication with said gas conduction means and adapted to receive and vent the combustion gases, whereby said combustion gases are forced to flow through said gas inlet means through said gas conduction means into said exhaust means to uniformly and efficiently heat the side and top walls of said oven.