IP Library › Granted Patent US 10,794,217
Granted Patent B2
US 10,794,217 · App. 15/853,486 · Granted Oct 6, 2020

Bleed valve system

Inventors: Anthony R. Bifulco (Ellington, CT); Jason B. Hickman (Palm Beach Gardens, FL); Alonso Meza (West Palm Beach, FL); Andrew R. Carlson (Jensen Beach, FL)
Assignee: RAYTHEON TECHNOLOGIES CORPORATION
F01D17/105F02C6/08F02C9/28F02K3/075F04D27/0207F02K3/06F05D2220/32F05D2250/41F05D2270/101F16K3/02
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Quick Facts
Patent No.
US 10,794,217
App. No.
15/853,486
Granted
Oct 6, 2020
Kind
B2
Abstract

A bleed valve system for a gas turbine engine that includes a retaining ring and a metering ring. The retaining ring abuts an end of a bleed air duct and defines a plurality of retaining ring apertures. The metering ring that is at least partially disposed within the bleed air duct and abuts the retaining ring, the metering ring defining a plurality of metering ring apertures, the metering ring being rotatable relative to the retaining ring to selectively facilitate a fluid flow through the bleed air duct.

Claims (30)

1. A bleed valve system for a gas turbine engine, comprising:

a retaining ring that abuts an end of a bleed air duct, the retaining ring defining a plurality of retaining ring apertures;

a metering ring that is at least partially disposed within the bleed air duct and abuts the retaining ring, the metering ring defining a plurality of metering ring apertures, the metering ring being rotatable relative to the retaining ring to selectively facilitate a fluid flow through the bleed air duct, the metering ring having at least one bracket; and

a drive shaft that extends into the bleed air duct and is operatively connected to the at least one bracket by a lever arm.

2. The bleed valve system of claim 1 , wherein the drive shaft is arranged to rotate about an axis such that the lever arm moves to rotate the metering ring relative to the retaining ring.

3. A bleed valve system, comprising:

a main body that is disposed about a central longitudinal axis, the main body having a first wall that extends between a first wall first end and a first wall second end, a second wall that extends between a second wall first end and a second wall second end, and an intermediate wall disposed between the first wall and the second wall and extends between an intermediate wall first end and an intermediate wall second end; and

a retaining ring that is disposed between the first wall and the intermediate wall, the retaining ring having a first portion that defines a plurality of retaining ring apertures and a second portion that extends from the first portion towards the intermediate wall second end;

a metering ring that abuts the first portion, the metering ring defining a plurality of metering ring apertures, wherein a pocket is defined between the intermediate wall second end, the second portion, and the first portion; and

a biasing member disposed in the pocket, the biasing member being arranged to urge the metering ring against the retaining ring.

4. The bleed valve system of claim 3 , wherein the metering ring is at least partially received within the pocket.

5. The bleed valve system of claim 3 , wherein the intermediate wall first end is connected to the second wall.

6. A bleed valve system, comprising:

a main body that is disposed about a central longitudinal axis, the main body having a first wall that extends between a first wall first end and a first wall second end, a second wall that extends between a second wall first end and a second wall second end, and an intermediate wall disposed between the first wall and the second wall and extends between an intermediate wall first end and an intermediate wall second end; and

a retaining ring that is disposed between the first wall and the intermediate wall, the retaining ring having a first portion that defines a plurality of retaining ring apertures and a second portion that extends from the first portion towards the intermediate wall second end; and

a metering ring that abuts the first portion, the metering ring defining a plurality of metering ring apertures, wherein the main body has an end wall that extends between the first wall first end and the second wall first end.

7. A gas turbine engine, comprising:

a case surrounding a main body that is disposed about a central longitudinal axis, the main body having a first wall that extends between a first wall first end and a first wall second end, a second wall that extends between a second wall first end and a second wall second end, and an intermediate wall disposed between the first wall and the second wall and extends between an intermediate wall first end and an intermediate wall second end, wherein a bleed air duct is defined between the first wall and the intermediate wall; and

a bleed valve system, comprising:

a retaining ring that is disposed between the first wall and the intermediate wall, the retaining ring having a first portion that defines a plurality of retaining ring apertures and a second portion that extends from the first portion towards the intermediate wall second end;

a metering ring that abuts the first portion, the metering ring defining a plurality of metering ring apertures;

a lever arm that is operatively connected to the metering ring; and

a drive shaft that extends through the first wall and into the bleed air duct and is operatively connected to the lever arm.

8. The gas turbine engine of claim 7 , wherein a bleed air inlet is defined by the second wall.

9. The gas turbine engine of claim 8 , wherein the bleed air inlet is disposed between the first wall first end and the intermediate wall first end.

10. The gas turbine engine of claim 8 , wherein a bleed air outlet is defined between first wall second end and the intermediate wall second end.

11. The gas turbine engine of claim 10 , wherein a bypass duct is defined between the case and the first wall.

12. The gas turbine engine of claim 7 , wherein the drive shaft is arranged to actuate the lever arm to rotate the metering ring about the central longitudinal axis relative to the retaining ring to move the bleed valve system between an open position and a closed position.

13. The gas turbine engine of claim 12 , wherein the plurality of metering ring apertures are approximately aligned with the plurality of retaining ring apertures while the bleed valve system is in the open position to facilitate a fluid flow through the bleed air duct.

14. The gas turbine engine of claim 12 , wherein the plurality of metering ring apertures are not aligned with the plurality of retaining ring apertures while the bleed valve system is in the closed position to inhibit a fluid flow through the bleed air duct.

Assignments (4)
CHANGE OF NAME Recorded Jul 27, 2023
From: RAYTHEON TECHNOLOGIES CORPORATION
To: RTX CORPORATION
Reel/Frame 064714/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE AND REMOVE PATENT APPLICATION NUMBER 11886281 AND ADD PATENT APPLICATION NUMBER 14846874. TO CORRECT THE RECEIVING PARTY ADDRESS PREVIOUSLY RECORDED AT REEL: 054062 FRAME: 0001. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF ADDRESS. Recorded Mar 4, 2021
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 055659/0001 →
CHANGE OF NAME Recorded Sep 4, 2020
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 054062/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 20, 2018
From: BIFULCO, ANTHONY R.; HICKMAN, JASON B.; MEZA, ALONSO; CARLSON, ANDREW R.
To: UNITED TECHNOLOOGIES CORPORATION
Reel/Frame 044980/0639 →
Continuity (1)
Related Publication 20190195082A1 · Jun 27, 2019