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:
Oct. 21, 2003
Filed:
May. 25, 2001
Christian Oliver Paschereit, Baden, CH;
Wolfgang Weisenstein, Remetschwil, CH;
Peter Flohr, Baden, CH;
Wolfgang Polifke, Freising, DE;
Alstom (Switzerland) Ltd, Baden, CH;
Abstract
An apparatus for damping acoustic vibrations in a combustor as well as a corresponding combustor arrangement with the apparatus. The apparatus includes a Helmholtz resonator ( ) that can be connected via a connecting channel ( ) with a combustor ( ). The Helmholtz resonator ( ) contains a hollow body ( ) the volume of which can be changed by adding or draining a fluid via a supply line ( ), or is located adjacent to such a hollow body in such a way that the resonance volume ( ) of the Helmholtz resonator ( ) is changed when the volume of the hollow body ( ) is changed. This apparatus makes it possible to adjust the resonance frequency of a Helmholtz resonator arranged inside a pressure container in accordance with the respective current operating point of the combustor to be damped, without having to pass movable components through the pressure container.