Evaporator with aerodynamic first dimples to suppress whistling noise
OwnerSteven Papapanu, Sunil Mehendaleinventors
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Abstract
A heat exchanger assembly including a plurality of pairs of plates disposed in series for fluid flow from a pass through one pair of plates to a pass through the next pair of plates. Each pair of plates includes a central rib to define a U-shaped passage having a fluid entering leg and a fluid exiting leg interconnected by an open bottom interconnecting the legs below the lower end of the engaging ribs. A plurality of first dimples project into the passage to interact with fluid flow through the passage and each of the first dimples has an aerodynamic, e.g., tear-drop, shape to reduce whistling noise in the latter pairs of plates.
Claims13
A heat exchanger assembly comprising;
- at least one pair of plates having mating edges and a concave region delimited by said edges to define a fluid passage,
- said plates having tubular projections defining an inlet for entering fluid to said passage and an outlet for exiting fluid from said passage to thereby establish a direction of fluid flow,
- a plurality of first dimples projecting into said passage to interact with fluid flow through said passage, and
- characterized by each of said first dimples having an aerodynamic shape including a large bulbous leading portion extending into a longer and tapering trailing portion with said leading portion being disposed into the fluid flow from said inlet to said outlet.
Dependencies are inferred from the claim text.