The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2007
Filed:
Nov. 01, 2004
Alexander Groehl, Dolgesheim, DE;
Robert Hirsch, Ingelheim, DE;
Klaas W. Roelfsema, Gasselternijveenschemond, NL;
Alexander Groehl, Dolgesheim, DE;
Robert Hirsch, Ingelheim, DE;
Klaas W. Roelfsema, Gasselternijveenschemond, NL;
Ceramat, S.Coop., Asteasu (Gipuzkoa), ES;
Abstract
The gas-fired heater, especially a water heater, has an atmospheric gas burner () arranged within a nearly or completely closed combustion chamber () and associated with a premixing gas/air supply system () with a fuel gas feed nozzle (). In order to avoid oscillations, which lead to sound waves and combustion instabilities, an oscillation-damping air supply chamber (″) is connected to the entrance () of the gas/air supply system () for combustion air, within which the fuel gas feed nozzle is arranged. The air supply chamber (″) is provided with at least one air entrance (″). The air supply chamber can be box-like, duct-like embracing or extending around the combustion chamber or it can be a pipe with different diameter pipe sections.