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US 2010/0075588 A1Published application
Ventilation fan
OwnerRonald W. Hanelineinventor
Life of this patent
Estimating the term…
Abstract
Fans and methods of making and using the fans are disclosed. The fans can include a propeller positioned with in a housing, an air straightener, and a housing which is narrower at the outlet than at the propeller.
Claims25
A fan, comprising:
- a housing, comprising an air intake, an air channel, and an air outlet;
- a propeller, located in the housing nearer the intake than the outlet, the propeller configured to cause air to flow into the housing from the intake, through the channel, and out of the housing through the outlet;
- an air straightener, located in the housing between the propeller and the outlet, the air straightener configured to collimate air flowing therethrough,
- wherein the air channel comprises first and second cross-sectional areas, each taken perpendicular to the general direction of air flow, the first cross-sectional area being nearer the intake than the second cross-sectional area, and wherein the first cross-sectional area is greater than the second cross-sectional area.
1 more element
A method of manufacturing a fan, the method comprising:
- providing a housing, comprising an air intake, an air channel, and an air outlet;
- fixing a propeller inside the housing nearer the intake than the outlet, the propeller configured to cause air to flow into the housing from the intake, through the channel, and out of the housing through the outlet;
- fixing an air straightener inside the housing between the propeller and the outlet, the air straightener configured to collimate air flowing therethrough,
- wherein the air channel comprises first and second cross-sectional areas, each taken perpendicular to the general direction of air flow, the first cross-sectional area being nearer the intake than the second cross-sectional area, and wherein the first cross-sectional area is greater than the second cross-sectional area.
1 more element
Dependencies are inferred from the claim text.