Water heater with lint collection detection
a technology of water heater and lint collection, which is applied in the direction of fluid heater, combustion process, lighting and heating apparatus, etc., can solve the problems of unsatisfactory efforts, and achieve the effect of reducing the flow of air and/or fuel and reducing the heat production
Inactive Publication Date: 2007-04-12
AMERICAN WATER HEATER
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- Abstract
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- Application Information
AI Technical Summary
Benefits of technology
The solution effectively reduces NOx emissions to ultra-low levels, ensures safe operation by shutting off the heater before high CO levels are reached, and improves ignition and noise characteristics, meeting stringent regulatory requirements.
Problems solved by technology
However, there have been a series of problems associated with simultaneously achieving: 1) the low NOx goal, 2) providing a burner that is resistant to build up of lint, dirt, oils and the like or that can shut itself off when too much of a build-up occurs, 3) being able to manufacture a gas-fired water heater in an economical fashion and 4) to produce a water heater that is safe, has excellent longevity and is noise free upon either initial ignition of the burner or during continued combustion on the burner.
To date, such efforts have not been completely successful.
Method used
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[0027] It will be appreciated that the following description is intended to refer to specific embodiments of the invention selected for illustration in the drawings and is not intended to define or limit the invention, other than in the appended claims.
[0028] Turning now to the drawings generally and FIGS. 1 and 2, in particular, one aspect of the invention is disclosed. A water heater 10 includes a water tank / container 12 having a water inlet 14 and a water outlet 16. A flue 18 extends upwardly through the tank and outwardly from the top of water heater 10. Tank 12 is surrounded by insulation 20. Such insulation may be made from any number of foam type insulations well known in the art and / or fiberglass insulation such as around the lower portion of the water heater. Various substitutions may be made without varying from the fundamental spirit of the invention.
[0029] A combustion chamber 22 is located below tank 12 and is formed by tank bottom 24, skirt 26 and bottom pan 28. Bott...
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A low NOx water heater including a water container, a combustion chamber adjacent the water container; and a burner associated with the combustion chamber and arranged to combust fuel to heat water in the water container, the burner comprising a plenum chamber having a combustion surface and a device to detect the presence of the collection of lint, dirt and / or oil.
Description
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of U.S. Ser. No. 11 / 003,749 filed on Dec. 3, 2004.FIELD OF THE INVENTION [0002] This invention relates to water heaters and burners used in conjunction with such water heaters. In particular, this invention relates to gas-fired water heaters, burners for such water heaters and lint detection systems used in conjunction with such burners. BACKGROUND [0003] Reducing polluting emissions from gas-fired water heaters, such as NOx emissions, continues to be an important objective. Governmental regulations in connection with NOx emissions continue to become more stringent and it has been a longstanding objective in the industry to continue to reduce NOx emissions to the point of ultra-low NOx emissions, such as 10 Ng / J or even less. [0004] Water heater manufacturers have, over the years, attempted to reduce NOx emissions through a variety of approaches, one approach utilizing radiant screen-type burners. One ...
Claims
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IPC IPC(8): F24H9/20
CPCF23Q9/045
Inventor SHELLENBERGER, TIMOTHY J.EDDS, THOMAS A.STATZER, GARRY D.
Owner AMERICAN WATER HEATER