Plate resonator
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
InventorsHelmut Fuchs, Joerg Hunecke, Xueqin Zha
Life of this patent
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Abstract
The invention concerns a plate resonator for absorbing sound and including a thin front plate with high elasticity and low internal friction, e.g., made of metal; a back plate which likewise has high elasticity but which has high internal friction; an all-over solid connection between the front and back plates in the form of a bonded connection (e.g. double-sided adhesive tape); and a border which is closed all around by the back plate but does not prevent sound entering the back plate from the side.
Claims21
A plate resonator for acoustical damping and sound insulation of air-born sound, comprising:
- a thin metal front plate;
- a rear polymer board having a thickness;
- a whole surface firm adhesive connection between said front plate and said rear board;
- a lateral border closed on all sides by said rear board, said border not impeding lateral entry of the air-born sound into said rear board;
- and
- wherein the thickness of the rear polymer board is sufficient to allow absorption of the air-born sound at low and mid frequencies.
A plate resonator for acoustical damping and sound insulation of air-born sound, comprising:
- a thin metal front plate;
- a rear polymer board;
- a whole surface firm adhesive connection between said front plate and said rear board having a thickness;
- a lateral border closed on all sides by said rear board, said border not impeding lateral entry of sound into said rear board;
- a cover plate connected to said rear board via a whole surface connection;
- a suspension system by which said plate resonator is suspended from a ceiling;
- and
- wherein the thickness of the rear polymer board is sufficient to allow absorption of the air-born sound at low and mid frequencies.
A wall element for acoustical damping and sound insulation of air-born sound, comprising:
- a plate resonator comprised of:
- a thin metal front plate;
- a rear polymer board having a thickness;
- a whole surface firm adhesive connection between said front plate and said rear board;
- a lateral border closed on all sides by said rear board, said border not impeding lateral entry of sound into said rear board;
- and
- wherein the thickness of the rear polymer board is sufficient to allow absorption of the air-born sound at low and mid frequencies.
Dependencies are inferred from the claim text.