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US 6,607,432 B2Granted
Air duct
AssigneeValeo Klimasysteme GmbH
InventorNorman Schaake
Life of this patent
Estimating the term…
Abstract
An air duct, in particular for a motor vehicle heating, ventilating and/or air conditioning system, which is acoustically optimized by virtue of the fact that at least one cross-sectional discontinuity is constructed by making use of a phenomena which occur as acoustic scattering processes at the cross-sectional discontinuity. The cross-sectional discontinuity should extend substantially perpendicular to the flow direction in the air duct.
Claims11
An air duct in at least one of a motor vehicle heating, ventilating and air conditioning system, said air duct defining a longitudinal direction, said air duct comprising:
- at least one cross-sectional discontinuity (10) in the air duct, said cross-sectional discontinuity defining a first length parallel to said longitudinal direction, and
- a straight wall opposite said at least one cross-sectional discontinuity (10), said straight wall extending a second length parallel to said longitudinal direction,
- wherein said second length is greater than said first length.
Dependencies are inferred from the claim text.