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An oven for continuous cooking of products carried upon a open mesh wire conveyor provides the impingement of a cooking vapor from air discharge structure having ports arrayed above and below the conveyor. The discharge ports extend laterally of the conveyor and communicate with upper and lower plen

An oven for continuous cooking of products carried upon a open mesh wire conveyor provides the impingement of a cooking vapor from air discharge structure having ports arrayed above and below the conveyor. The discharge ports extend laterally of the conveyor and communicate with upper and lower plenums each charged by blower fans which draw cooking vapor from low pressure corridors alongside the product conveyor. Gas, electric or thermo fluid heaters are disposed in the corridors. The discharge ports are in slot form disposed about the apex of a Vee shaped riser spaced from the adjacent riser to provide a low pressure flow channel communicating with the corridors giving a rapid velocity change of the cooking vapor from turbulent to a less turbulent flow. The distance for vapor travel between the upper discharge ports and the product carrying conveyor is variable. Temperature and moisture content of the process vapor can be changed to suit cooking conditions.

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[ What is claimed:] [1.] A method of cooking food products by impinging a process vapor on the products, comprising the steps of providing an oven including a housing having an inlet for food products tobe cooked in the oven and an outlet for emitting food products from the oven thereby defining a f

[ What is claimed:] [1.] A method of cooking food products by impinging a process vapor on the products, comprising the steps of providing an oven including a housing having an inlet for food products tobe cooked in the oven and an outlet for emitting food products from the oven thereby defining a food product travel path, passing food products into the housing upon a conveyor of generally permeable construction, impinging a cooking process vapor upon the food products from above and from below the conveyor from a plurality of vapor emitters, spaced apart along and extending laterally of the product travel path for a treatment time within the oven,recirculating the process vapor first between adjacent vapor emitters and laterally of the product travel path, and then longitudinally of the travel path towards one end of the oven housing, heating the process vapor as it courses longitudinally of the product travel path, providing blower fans with intakes arranged laterally of the travel path and disposed at the oven end, causing the process vapor to move through the fan intakes and thence into the vapor emitters and removing the cooked food products from the housing and the conveyor.