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:
Mar. 04, 2025
Filed:
Nov. 08, 2019
Ws-wärmeprozesstechnik Gmbh, Renningen, DE;
Joachim G. Wünning, Leonberg, DE;
Joachim A. Wünning, Leonberg, DE;
WS-WÄRMEPROZESSTECHNIK GMBH, Renningen, DE;
Abstract
A method for heating a heating chamber to a temperature below the spontaneous ignition temperature of the fuel that is used, wherein fuel and air are reacted in flameless oxidation in a non-stoichiometric mixture ratio in a combustion chamber. The air ratio λ is at least lower than the stoichiometric ratio λ=1 such that the temperature in the combustion chamber does not exceed the temperature at which thermal nitrous oxide generation begins. Otherwise, λ is established such that the spontaneous ignition temperature of the fuel is exceeded. This results in two permissible air ratio ranges, between λand λin sub-stoichiometric operation, and λto λin superstoichiometric operation of the combustion chamber. The still-reactive gases released from the combustion chamber are made to react in the heating chamber, preferably by flameless oxidation. This avoids thermal nitrous oxide generation in the heating chamber.