An oven for cooking foods, and especially for browning foods, has heated, radiant walls. Heat may be supplied by a gas burner flame in a plenum behind the walls, with products of combustion thus being isolated from the food in the oven chamber. In one embodiment food products are continuously conveyed...http://www.google.es/patents/US5942142?utm_source=gb-gplus-sharePatente US5942142 - Radiant wall/hot air impingement oven
