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Gas burner injet isolator

IP.com Disclosure Number: IPCOM000029329D
Publication Date: 2004-Jun-23
Document File: 5 page(s) / 631K

Publishing Venue

The IP.com Prior Art Database

Abstract

A ceramic sleeve insert used to thermally separate the burner base of a typical gas burner from the "injet" portion of the burner which contains the gas orifice, yet allows injet geometry to be used to hold burner base and burner assembly.

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Title of Invention:

Gas burner injet isolator

Invention Abstract A ceramic sleeve insert used to thermally separate the burner base of a typical gas burner from the "injet" portion of the burner which contains the gas orifice, yet allows injet geometry to be used to hold burner base and burner assembly.

Problem or requirement addressed by the invention Normally, when a gas burner is started, the burner operates at a given gas flow rate of some selection or choosing by the consumer or by the appliance. The initial gas flow rate, typically denoted in Btu per hr, decays with time to a steady state value typically 75-85% of the original value. This steady state value is not consistent with the consumer's initial desired gas flow rate.

How has this problem or requirement been addressed before? The problem has been addressed before only by accepting inherent gas flow rate decay in all gas cooktops, requiring the consumer to adjust the intended gas flow rate upward to compensate periodically while the gas decay rate levels off.

How the invention works The invention works by using any generic variety of ceramic materials (such as alumina-silicate), to be machined or molded into a thin-walled sleeve with shoulder geometry. The sleeve is placed in the burner injet, then the burner base is placed in the sleeve. Since the gas combustion occurs at the level of the burner base, high levels of heat energy or produced that typically conduct down the mounting collar of the burner base and into the injet, where as the burner base mounting collar typically is in direct contact with the burner injet so as to fix the position of the burner base with respect to the gas orifice, which is mounted in the burner injet. The ceramic insert provides a thermal conducti...