# US 10,321,602 B2 · Air agitator assemblies

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- Number: US 10,321,602 B2
- Document ID: US10321602B2
- Status: Granted
- Kind: B2
- Application number: 16/013,460
- Filed: 2018-06-20
- Published: 2018-10-25
- Granted: 2019-06-11
- Earliest claimed: 2014-10-15
- Assignees: GE Aviation Systems LLC
- Applicants: GE Aviation Systems LLC
- Inventors: Michel Engelhardt; Shushanna Rebecca Cherian-Brutus
- Web page: https://patentgrep.com/patent/US10321602B2

## CPC

- H05K 7/20172: {Fan mounting or fan specifications}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An air agitator assembly for use with a heat-emitting object having a contour, the air agitator assembly including a perforated flexible structure having a thermally absorbing first side confronting and spaced from a portion of the heat-emitting object to define an air space there between and a second side opposite the first side and where at least a portion of the first side of the perforated flexible structure has a contour that matches a contour of a corresponding portion of the heat-emitting object.

## Claims

### Claim 1

An air agitator assembly for use with a heat-emitting object having at least a first side and a second side, comprising: a first air agitator having a first perforated flexible structure having a thermally absorbing first side spaced from a portion of the first side of the heat-emitting object to define a first air space there between and a second side opposite the first side of the first perforated flexible structure, where at least a portion of the first side of the first perforated flexible structure has a non-flat contour that matches a non-flat contour of a corresponding portion of the first side of the heat-emitting object, and at least one piezoelectric structure located on the first perforated flexible structure; and a second air agitator having a second perforated flexible structure having a thermally absorbing first side spaced from a portion of the second side of the heat-emitting object to define a second air space there between and a second side opposite the first side of the second perforated flexible structure, where at least a portion of the first side of the second perforated flexible structure has a non-flat contour that matches a non-flat contour of a corresponding portion of the second side of the heat-emitting object, and at least one piezoelectric structure located on the first perforated flexible structure; wherein heat emitted from the heat-emitting object is absorbed by the first side of the first perforated flexible structure and the first side of the second perforated flexible structure and actuation of piezoelectric structures results in movement of the corresponding first perforated flexible structure and the corresponding second perforated flexible structure to move the air such that the heat-emitting object is cooled by airflows created.

### Claim 2 (depends on 1)

The air agitator assembly of claim 1 wherein the piezoelectric structures of the first perforated flexible structure and the second perforated flexible structure are configured to be actuated simultaneously.

### Claim 3 (depends on 1)

The air agitator assembly of claim 1 wherein the first side of the first perforated flexible structure and the first side of the second perforated flexible structure have absorption values greater than 0.95.

### Claim 4 (depends on 1)

The air agitator assembly of claim 1 wherein the second side of the first perforated flexible structure and the second side of the second perforated flexible structure have thermally reflective surfaces such that they are both configured to transfer heat via radiation.

### Claim 5 (depends on 4)

The air agitator assembly of claim 4 wherein the second side of the first perforated flexible structure and the second side of the second perforated flexible structure have a reflectivity value greater than 0.95.

### Claim 6 (depends on 1)

The air agitator assembly of claim 1, further comprising a controller configured to control actuation of the piezoelectric structures.

### Claim 7 (depends on 6)

The air agitator assembly of claim 6, further comprising at least one temperature-measuring device providing at least one temperature signal to the controller.

### Claim 8 (depends on 1)

The air agitator assembly of claim 1 wherein the piezoelectric structures of the first perforated flexible structure and the second perforated flexible structure are operably coupled to at least one power source.