Patent ID: 8945464
Filing Date: 2015-02-03
Classification: B22D,F27D

Abstract:
1. An apparatus for heating vessels having an enclosed space and controlling air ingress into the enclosed space, the apparatus comprising: a lid structure having a burner assembly mounted therein, the vessel and lid structure mating such that a circumferential gap is formed between the vessel and the lid structure, the vessel having a diameter D wherein the burner assembly is configured to combust fuel and oxidant from the burner assembly under conditions to provide a flame having a flame temperature T wherein a burner configuration ratio of the gap area to the burner face area is determined by the equation: a=A wherein a burner velocity ratio determined by to the equation: b=3V wherein V wherein the sum of the burner configuration ratio, a, and the burner velocity ratio, b, is less than 2.5; and wherein the oxidant is an oxygen-enriched gas.