Air amplifier with noise suppression

Patent metadata

Field	Value
Publication number	US-2022228605-A1
Application number	US-202117150794-A
Country	US
Kind code	A1
Filing date	Jan 15, 2021
Priority date	Jan 15, 2021
Publication date	Jul 21, 2022
Grant date	—

Abstract

Exemplary air amplifiers described herein can utilize a high-pressure stream of gas to accelerate a low-velocity stream of gas to provide a high-velocity, high-volume stream of gas. This high-velocity, high-volume stream of gas can generate unwanted noise as the high-velocity, high-volume stream of gas propagates through the air amplifier. The exemplary air amplifiers described herein can include can passively and/or actively suppress, for example, diminish, re-tune, or even completely cancel, the unwanted noise as the high-velocity, high-volume stream of gas propagates through these exemplary air amplifiers. The exemplary air amplifiers described herein can include one or more absorption materials to passively suppress the unwanted noise generated by the high-velocity, high-volume stream of gas. The exemplary air amplifiers described herein can generate multiple noise suppression waves to actively suppress the unwanted noise generated by the high-velocity, high-volume stream of gas. The multiple noise suppression waves can destructively combine with the unwanted noise generated by the high-velocity, high-volume stream of gas to suppress the unwanted noise.

First claim

What is claimed is:

1 . An air amplifier, comprising:
air amplification engine configured to utilize energy from a high-pressure input stream of gas to accelerate a low-velocity input stream of gas to provide a high-velocity, high-volume input stream of gas; and an air guide configured to:
shape the high-velocity, high-volume input stream of gas as the high-velocity, high-volume input stream of gas propagates through the air guide to provide a high-velocity, high-volume input stream of gas, and
passively suppress, using one or more absorption materials, unwanted noise generated by the high-velocity, high-volume input stream of gas as the high-velocity, high-volume input stream of gas propagates through the air guide.

2 . The air amplifier of claim 1 , wherein the unwanted noise is characterized being within an audible frequency range between approximately 20 Hz and approximately 20 kHz.

3 . The air amplifier of claim 1 , wherein the one or more absorption materials comprise one or more sound insulations.

4 . The air amplifier of claim 3 , wherein the one or more sound insulations comprise rock wool.

5 . The air amplifier of claim 1 , wherein the air guide comprises:
a passive acoustic absorption chamber, situated within the air guide along a longitudinal axis of the air guide, having the one or more absorption materials.

6 . The air amplifier of claim 5 , wherein the air guide further comprises:
a first inner faceplate, situated within the air guide along the longitudinal axis of the air guide, the first inner faceplate, having a plurality of perforations to allow the unwanted noise to propagate through the first inner faceplate onto the passive acoustic absorption chamber.

7 . The air amplifier of claim 6 , wherein the air guide further comprises:
a second outer faceplate, situated along the longitudinal axis, configured to reflect the unwanted noise that propagates through the passive acoustic absorption chamber back onto the passive acoustic absorption chamber.

8 . An air guide for an air amplifier, the air guide comprising:
a first inner faceplate situated within the air guide along a longitudinal axis of the air guide, the first inner faceplate having a plurality of perforations to allow an unwanted noise generated by a stream of gas as the stream of gas propagates through the air guide to propagate through the first inner faceplate; a passive acoustic absorption chamber, situated within the air guide along a longitudinal axis of the air guide, having one or more absorption materials configured to absorb the unwanted noise propagating through the first inner faceplate; and a second outer faceplate configured to reflect the unwanted noise that propagates through the passive acoustic absorption chamber back onto the passive acoustic absorption chamber.

9 . The air guide of claim 8 , wherein the unwanted noise is characterized being within an audible frequency range between approximately 20 Hz and approximately 20 kHz.

10 . The air guide of claim 8 , wherein the one or more absorption materials comprise rock wool.

11 . The air guide of claim 8 , wherein the one or more absorption materials are configured to transfer kinetic energy of the unwanted noise into heat energy to suppress the unwanted noise.

12 . The air guide of claim 8 , wherein each perforation from among the plurality of perforations is implemented using a regular closed geometric opening.

13 . The air guide of claim 12 , wherein the regular closed geometric opening comprises an ellipse, a hexagon, or a diamond.

14 . The air guide of claim 8 , wherein the first inner faceplate is implemented as a first three-dimensional shape having a first hollow cavity, and
wherein the second inner faceplate is implemented as a second three-dimensional shape having a second hollow cavity.

15 . The air guide of claim 14 , wherein the first three-dimensional shape is similar to the second three-dimensional shape.

16 . An air guide for an air amplifier, the air guide comprising:
a first inner faceplate, having a plurality of perforations, situated within a hallow cavity of the air guide along a longitudinal axis of the air guide, the first inner faceplate having a plurality of perforations; a second outer faceplate situated along the longitudinal axis of the air guide; and a passive acoustic absorption chamber situated within the hallow cavity of the air guide along the longitudinal axis of the air guide between the first inner faceplate and the second inner faceplate, the passive acoustic absorption chamber having one or more absorption materials.

17 . The air guide of claim 16 , wherein the air guide is configured to shape a stream of gas as the stream of gas propagates through the air guide, the stream of gas generating an unwanted noise as the stream of gas propagates through the air guide.

18 . The air guide of claim 17 , wherein the plurality of perforations is configured to allow the unwanted noise to propagate through the first inner faceplate.

19 . The air guide of claim 17 , wherein the second outer faceplate is configured to reflect the unwanted noise that propagates through the passive acoustic absorption chamber back onto the passive acoustic absorption chamber.

20 . The air guide of claim 17 , wherein the one or more absorption materials are configured to absorb the unwanted noise propagating through the first inner faceplate.

Assignees

• Msg Entertainment Group Llc

Inventors

• Anderson Robert
• Hockman Erik
• Elby Stuart
• Wertz Jeffery Lynn
• Rives Michael Allen
• Beaver Darik Wade

Classifications

• F04D33/00

  Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type (F04D35/00 takes precedence; hand-held fans A45B) · CPC title

• F04D29/665

  by means of resonance chambers or interference · CPC title

• G10K11/165

  Particles in a matrix · CPC title

• G10K11/172

  using resonance effects · CPC title

• B05B7/0087 Primary

  Atmospheric air being sucked by a gas stream, generally flowing through a venturi, at a location upstream or inside the spraying apparatus · CPC title