HVAC system noise control
AssigneeDENSO International America, Inc.
InventorsPrakash Thawani, Stephen Sinadinos, Joseph Burtch
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Abstract
A sound damper and associated system are disclosed for damping sound. In embodiments, the sound damper is utilized within an automotive HVAC system. A passage wall defines an air passageway that transmits air. The sound damper includes a micro perforated panel (MPP) located within an opening formed into a passage wall. A back wall is spaced from the MPP, and a cavity is provided between the back wall and the MPP that is outside the air passageway. In embodiments, the MPP can be covered by a non-perforated film that is acoustically transparent and air impermeable.
Claims20
An automotive HVAC system, comprising:
- an HVAC module having a passage wall providing a passageway configured to facilitate pressurized air flow therein, the passage wall having an opening therethrough, wherein the passage wall and a back wall spaced from the passage wall define a hollow cavity therebetween, the cavity being located outside the passageway;
- a micro perforated panel (MPP) covering the opening and separating the passageway from the cavity, the MPP having a first side facing the passageway and a second side facing the cavity;
- and
- a non-perforated film covering the first side of the MPP.
A sound damper for an HVAC system, the sound damper comprising:
- a micro perforated panel (MPP) configured to attach to a passage wall that defines a passageway that is configured to facilitate pressurized air flow therein, the MPP and a back wall collectively defining a hollow cavity located outside the passageway;
- and
- a non-perforated film covering the MPP.
A system for damping noise within an automotive HVAC, the system comprising:
- an HVAC module having a passage wall at least partially defining an air passageway configured to transmit pressurized air therethrough, wherein the passage wall includes an opening therethrough;
- a micro perforated panel (MPP) attached to the passage wall at the opening;
- and
- a back wall spaced from the MPP and at least partially defining a hollow cavity between the back wall and the MPP, wherein the cavity is located outside of the air passageway.
Dependencies are inferred from the claim text.