Air amplifier with noise suppression

Patent metadata

Field	Value
Publication number	US-2024183293-A1
Application number	US-202418439004-A
Country	US
Kind code	A1
Filing date	Feb 12, 2024
Priority date	Jan 15, 2021
Publication date	Jun 6, 2024
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 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 comprising: a first faceplate to form an innermost assembly of the air guide that is situated within the air guide along a longitudinal axis of the air guide, the first faceplate being 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 output stream of gas, and allow unwanted noise generated by the high-velocity, high-volume input stream of gas to propagate through the first inner faceplate, a passive acoustic absorption chamber, situated within the air guide along the longitudinal axis of the air guide, configured to absorb at least some of the unwanted noise that propagates through the first inner faceplate, an active acoustic absorption chamber, situated within the air guide along the longitudinal axis of the air guide, having a plurality of acoustic suppression elements that are normal to the longitudinal axis of the air guide, the plurality of acoustic suppression elements being configured to generate a plurality of noise suppression waves that destructively combine with at least some of the unwanted noise that propagates through the passive acoustic absorption chamber, and a second faceplate to form an outermost assembly of the air guide that is situated within the air guide along the longitudinal axis of the air guide.

2 . The air amplifier of claim 1 , wherein the first faceplate comprises a plurality of perforations configured to allow the unwanted noise to propagate through the first faceplate onto the acoustic absorption chamber.

3 . The air amplifier of claim 2 , wherein the plurality of perforations are configured and arranged to be elliptical, hexagonal, or diamond in shape.

4 . The air amplifier of claim 1 , wherein the passive acoustic absorption chamber comprises one or more porous sound absorption materials, one or more sound insulations, one or more acoustic fabrics, or one or more acoustic paints to absorb the at least some of the unwanted noise that propagates through the first inner faceplate.

5 . The air amplifier of claim 1 , wherein the passive acoustic absorption chamber is configured and arranged to have a non-uniform cross-sectional area along the longitudinal axis of the air guide.

6 . The air amplifier of claim 5 , wherein the non-uniform cross-sectional area is characterized as being tapered along the longitudinal axis of the air guide.

7 . The air amplifier of claim 1 , wherein each acoustic suppression element from among the plurality of acoustic suppression elements is staggered from its one or more neighboring, adjacent acoustic suppression elements from among the acoustic suppression elements to form a two-dimensional lattice of acoustic suppression elements.

8 . The air amplifier of claim 7 , wherein the two-dimensional lattice comprises a rhombic lattice, a square lattice, a rectangular lattice, a parallelogrammic lattice, a triangular lattice, or a hexagonal lattice.

9 . The air amplifier of claim 1 , wherein the plurality of acoustic suppression elements is configured to vibrate at one or more resonant frequencies to generate the plurality of noise suppression waves at the one or more resonant frequencies that destructively combine with the at least some of the unwanted noise that propagates through the passive acoustic absorption chamber.

10 . An air guide for an air amplifier, the air guide comprising:
a first inner faceplate to form an innermost assembly of the air guide that is situated along a longitudinal axis of the air guide, the first inner faceplate having a plurality of perforations configured 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 the longitudinal axis of the air guide, configured to absorb at least some of the unwanted noise that propagates through the first inner faceplate; an active acoustic absorption chamber, situated along the longitudinal axis of the air guide, having a plurality of acoustic suppression elements that are normal to the longitudinal axis of the air guide, the plurality of acoustic suppression elements being configured to generate a plurality of noise suppression waves that destructively combine with at least some of the unwanted noise that propagates through the passive acoustic absorption chamber; and a second outer faceplate configured to form an outermost assembly of the air guide that is situated along the longitudinal axis of the air guide.

11 . The air guide of claim 10 , wherein the plurality of perforations are configured and arranged to be elliptical, hexagonal, or diamond in shape.

12 . The air guide of claim 10 , wherein the passive acoustic absorption chamber comprises one or more porous sound absorption materials, one or more sound insulations, one or more acoustic fabrics, or one or more acoustic paints to absorb the at least some of the unwanted noise that propagates through the first inner faceplate.

13 . The air guide of claim 10 , wherein the passive acoustic absorption chamber is configured and arranged to have a non-uniform cross-sectional area along the longitudinal axis of the air guide.

14 . The air guide of claim 13 , wherein the non-uniform cross-sectional area is characterized as being tapered along the longitudinal axis of the air guide.

15 . The air guide of claim 10 , wherein each acoustic suppression element from among the plurality of acoustic suppression elements is staggered from its one or more neighboring, adjacent acoustic suppression elements from among the acoustic suppression elements to form a two-dimensional lattice of acoustic suppression elements.

16 . The air guide of claim 15 , wherein the two-dimensional lattice comprises a rhombic lattice, a square lattice, a rectangular lattice, a parallelogrammic lattice, a triangular lattice, or a hexagonal lattice.

17 . The air guide of claim 10 , wherein the plurality of acoustic suppression elements is configured to vibrate at one or more resonant frequencies to generate the plurality of noise suppression waves at the one or more resonant frequencies that destructively combine with the at least some of the unwanted noise that propagates through the passive acoustic absorption chamber.

18 . An air guide for an air amplifier, the air guide comprising:
a first inner faceplate 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 configured 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 second outer faceplate situated along the longitudinal axis of the air guide; 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, comprising one or more porous sound absorption materials, one or more sound insulations, one or more acoustic fabrics, or one or more acoustic paints to absorb at least some of the unwanted noise

Assignees

• Msg Entertainment Group Llc

Inventors

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

Classifications

• B32B1/08

  Tubular products · CPC title

• B32B17/10

  of synthetic resin · CPC title

• F16L55/02781

  The regulating element being provided with radial outputs · CPC title

• G10K11/175

  using interference effects; Masking sound · CPC title

• F01N1/06 Primary

  by using interference effect · CPC title