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US 6,252,769 B1Granted
Device for increasing heat transfer
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsCarl Henrik Tullstedt, Patrik Bergman, Anders Edgren
Life of this patent
Estimating the term…
Abstract
A device for increasing heat transfer from an object includes at least one oscillating membrane for generating air motion in air surrounding the object, and a nozzle for affecting the air motion so that the air motion causes a continuous exchange of the air surrounding the object.
Claims20
A device for increasing heat transfer from an object, comprising:
- at least one oscillating membrane for generating air motion in air surrounding the object;
- means for affecting the air motion so that the air motion causes a continuous exchange of the air surrounding the object, wherein the means for affecting the air motion comprises at least one always-open nozzle having different flow resistances for different flow directions.
A device for increasing heat transfer from an object, comprising:
- at least one oscillating membrane for generating air motion in air surrounding the object;
- means for affecting the air motion so that the air motion causes a continuous exchange of the air surrounding the object, the means for affecting the air motion including at least one nozzle having different flow resistances for different flow directions, a cabinet with a space, at least one of the membranes being arranged in the space, a first nozzle arranged to permit flow communication between air in the cabinet and air outside the cabinet, the first nozzle having a greater flow resistance to airflow in a direction into the cabinet than in an opposite direction to the direction into the cabinet, and a second nozzle being arranged to permit flow communication between air in the cabinet and air outside the cabinet, the second nozzle having a greater flow resistance to airflow in a direction out of the cabinet than in an opposite direction to the direction out of the cabinet, and wherein the object is disposed in the cabinet.
A device for increasing heat transfer from an object, comprising:
- at least one oscillating membrane for generating air motion in air surrounding the object;
- means for affecting the air motion so that the air motion causes a continuous exchange of the air surrounding the object, the means for affecting the air motion including at least one nozzle having different flow resistances for different flow directions, and wherein at least one of the membranes is stiff and at least one nozzle is arranged through the stiff membrane so that air on a first side of the stiff membrane is in flow communication, via the nozzle, with air on a second side of the stiff membrane.
Dependencies are inferred from the claim text.