Patent ID: 8783412
Filing Date: 2014-07-22
Classification: F01D,F01N,F02C,F02K,F05D,Y10T

Abstract:
1. A method for manufacturing a sound absorber, providing an outer wall for the sound absorber having a plurality of through passages; providing a plurality of funnel-like cone elements each being assigned to certain of the plurality of through passages inside the sound absorber, the cone elements having a larger opening facing radially outwards and a smaller opening facing radially inwards, with a quantity of the cone elements being provided adjacent to one another longitudinally along each of a plurality of strip-shaped first carrier bands; providing a plurality of cup elements on a radially interior side of the cone elements, with each cup element receiving only one cone element, and with a quantity of the cup elements being provided adjacent to one another longitudinally along each of a plurality of strip-shaped second carrier bands; arranging the plurality of the first carrier bands side-by-side to one another and skewed in a first direction with respect to an axis of the sound absorber; arranging the plurality of the second carrier bands side-by-side to one another and skewed in a second direction with respect to the axis of the sound absorber, with the first and second directions crossing each other such that each first carrier band crosses a plurality of second carrier bands and each second carrier band crosses a plurality of first carrier bands; joining the carrier bands to one another and to the outer wall in order to form a rigid body.