Sound damper, in particular for a fuel-cell system
AssigneePurem GmbH
InventorsPeter Wink, Jochen Hammer, Frank Berkemer, Thomas Übele, Matthias Conrath
Life of this patent
Estimating the term…
Abstract
A sound damper for a fuel-cell system includes a tubular sound-damper casing made of plastic material. The casing is elongate in the direction of a sound-damper longitudinal axis. A first sound-damper end piece made of plastic material is fixed to the sound-damper casing at a first axial end of the sound-damper casing. A second sound-damper end piece made of plastic material is fixed to the sound-damper casing at a second axial end of the sound-damper casing. On at least one sound-damper end piece, at least one fastening element is provided for fastening the sound damper to a support structure.
Claims37
A sound damper comprising:
- a tubular sound-damper casing defining a longitudinal axis and having first and second axial ends;
- said tubular sound-damper casing being made of plastic material and being elongated in along said longitudinal axis;
- a first sound-damper end piece made of plastic material and being fixed to said sound-damper casing at said first axial end thereof;
- a second sound-damper end piece made of plastic material and being fixed to said sound-damper casing at said second axial end thereof;
- and,
- at least one fastening element for fastening said sound damper to a support structure and said at least one fastening element being on at least one of said sound-damper end pieces.
A fuel-cell system comprising:
- at least one fuel cell;
- a fuel-cell exhaust system receiving fuel-cell exhaust from the at least one fuel cell;
- and,
- a sound damper including:
- a tubular sound-damper casing defining a longitudinal axis and having first and second axial ends;
- said tubular sound-damper casing being made of plastic material and being elongated in along said longitudinal axis;
- a first sound-damper end piece made of plastic material and being fixed to said sound-damper casing at said first axial end thereof;
- a second sound-damper end piece made of plastic material and being fixed to said sound-damper casing at said second axial end thereof;
- and, at least one fastening element for fastening said sound damper to a support structure and said at least one fastening element being on at least one of said sound-damper end pieces.
A method for making a sound damper including:
- a tubular sound-damper casing defining a longitudinal axis and having first and second axial ends;
- said tubular sound-damper casing being made of plastic material and being elongated in along said longitudinal axis;
- a first sound-damper end piece made of plastic material and being fixed to said sound-damper casing at said first axial end thereof;
- a second sound-damper end piece made of plastic material and being fixed to said sound-damper casing at said second axial end thereof;
- and, at least one fastening element for fastening said sound damper to a support structure and said at least one fastening element being on at least one of said sound-damper end pieces, the method comprising the steps of:
- a) severing a length section from a sound-damper casing blank to provide the sound-damper casing;
- b) providing the first sound-damper end piece and the second sound-damper end piece;
- and,
- c) fixing the first sound-damper end piece to the first axial end of the sound-damper casing and fixing the second sound-damper end piece to the second axial end of the sound-damper casing.
Dependencies are inferred from the claim text.