Srp 687 Pty. Ltd.

Schott Ag

Schott Glas

Dewi Bramono

Philip C Carbone

Karen R Benedek

Judith Reich

Herwig Scheidler

An apparatus for combusting a fuel and air mixture within a combustion chamber, particularly a combustion chamber of a gaseous fuel fired water heater. A pressure relief void is intentionally formed so that a combustion chamber forms communication with a surrounding environment through a peripheral gap between the combustion chamber wall and a vessel wall of a vessel. During ignition, the pressure relief void allows pre-combustion fluid within the combustion chamber to escape through both the pressure relief void and the exhaust flue. The pressure relief void reduces or eliminates undesirable noise associated with start-up and operation of conventional water heater combustion chambers with premixed burner systems. The pressure relief void of this invention is sized large enough to relieve an ignition pressure pulse from the combustion chamber upon ignition and yet is sized small enough to prevent a combustion flame from passing through the pressure relief void during ignition.

Method and apparatus for operating gaseous fuel fired heater

A method and apparatus for combusting a fuel and air mixture within a combustion chamber, particularly a combustion chamber of a gaseous fuel fired water heater. A pressure relief void is intentionally formed so that a combustion chamber forms communication with a surrounding environment through means other than the exhaust flue and/or a fuel and/or air inlet. During ignition, the pressure relief void allows pre-combustion fluid within the combustion chamber to escape through both the pressure relief void and the exhaust flue. The pressure relief void reduces or eliminates undesirable noise associated with start-up and operation of conventional water heater combustion chambers with premixed burner systems. The pressure relief void of this invention is preferably sized large enough to relieve an ignition pressure pulse from the combustion chamber upon ignition and yet is sized small enough to prevent a combustion flame from passing through the pressure relief void during ignition and/or operational combustion. The water heater may include two burner assemblies, each which can be easily attached or detached, for quick installation and easy maintenance.

A water heater including a water container, a combustion chamber adjacent the container, the combustion chamber having a side wall and at least one flame arrestor to admit air and extraneous fumes into the combustion chamber and confine ignition and combustion of the extraneous fumes within the combustion chamber, and a burner having a multiplicity of burner ports associated with the combustion chamber and arranged to combust fuel to heat water in the container, and an air diverter including a baffle plate with an upper surface and an outer edge portion, the diverter positioned in the combustion chamber and having a lower portion of the upper surface positioned at about the same height as at least a portion of the burner ports, the baffle plate sized to form a gap between the outer edge portion and the side wall such that flames generated by combustion of the fuel tend to attach to at least a portion of the lower portion, and a flange attached to and angled upwardly from the outer edge portion and adapted to channel combustion air passing through at least a portion of the flame trap through the gap to ensure uniform combustion and meter the relative amounts of primary and secondary air, with the net effect of optimizing combustion and minimizing NO and CO emissions.

Flammable vapor resistant water heater with low NOx emissions

A water heater including a water container; a combustion chamber adjacent the container, the combustion chamber having at least one flame arrestor to admit air and extraneous fumes into the combustion chamber and confine ignition and combustion of the extraneous fumes within the combustion chamber; a burner associated with the combustion chamber and arranged to combust fuel to heat water in the container; an air diverter positioned between the flame arrestor and the burner and adapted to channel at least a portion of combustion air passing through at least a portion of the flame arrestor to a position for mixture with the fuel prior to entering the burner to ensure uniform combustion; and a flange positioned above the air diverter to which the flames attach and thereby reduce combustion temperatures; the combined effect of which is to optimize combustion performance and minimize NO and CO emissions.

Growing community of inventors

Malden, MA, United States of America

Dewi Bramono