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US 2025/0092876 A1Published application
Air moving devices, aerodynamic rotor, and methods
AssigneeWhisper Aero Inc.
InventorsMark Douglass Moore, Ian Andreas Villa, Devon Jedamski, Xiaofan Fei, Andrew George Terajewicz, Jonathan Jeffrey Paravano, Andrew Michael Marschner, Matthew Alan Dempsey
Life of this patent
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Abstract
An air-moving device may include an aerodynamic rotor in the form of a bladed disk. The aerodynamic rotor may include a physical geometry that constrains a noise level of the air-moving device.
Claims24
A method of moving air comprising:
- providing an air-moving device comprising:
- a motor;
- a drive mechanism coupled to the motor;
- and
- a rotor coupled to the drive mechanism, the rotor axially placed within a duct and comprising:
- a hub;
- a quantity of blades contiguously formed with and radially extend away from the hub, wherein the quantity of blades is in the range of 12-100 blades and the blades each have a blade aspect ratio between 1 and 10;
- and
- a shroud contiguously formed with and circumscribing the quantity of blades;
- and
- causing, via operation of the motor, the rotor to rotate with a blade passage frequency (BPF) in the range of approximately 8-16 kilohertz (kHz) to create a fan pressure ratio in the range of approximately 1.01-1.2, such that the rotation of the rotor results in a noise level of the air-moving device in the range of approximately 30-70 A-weighted decibels dB (A) at distance of at 50 feet.
8 more elements
An apparatus configured to move air through an air-moving device,
- a rotor configured to be axially rotated within a duct, the rotor comprising:
- a central hub;
- a quantity of blades between 12-100 blades, wherein each blade has a proximate end that is contiguously formed with the hub of the rotor and radially extends away from the hub to terminate at a terminal end, and wherein each blade has a blade aspect ratio between 1 and 10;
- and
- a shroud contiguously formed with and circumscribing the terminal ends of the blades;
- wherein the rotor is configured to rotate with a blade passage frequency (BPF) in the range of approximately 8-16 kilohertz (kHz) to create thrust.
3 more elements
An apparatus configured to move air through an air-moving device,
- a rotor comprising:
- a central hub configured to be axially rotated;
- a quantity of blades between 12-100 blades, wherein each blade has a proximate end that is contiguously formed with the hub of the rotor and radially extends away from the hub to terminate at a terminal end, and wherein each blade has a blade aspect ratio between 1 and 10;
- and
- a shroud contiguously formed with and circumscribing the terminal ends of the blades;
- a housing that defines a primary airpath between an inlet end and an outlet end;
- wherein the rotor is configured to be axially rotated within the housing at a blade passage frequency (BPF) in the range of approximately 8-16 kilohertz (kHz) and fan pressure ratio within the range of approximately 1.01-1.2 to create thrust.
4 more elements
Dependencies are inferred from the claim text.