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US 10,760,493 B2Granted
Heat exchanger flow control assembly
AssigneeRaytheon Technologies Corporation
InventorMichael R. Thomas
Life of this patent
Estimating the term…
Abstract
An example flow control assembly includes a door that is moved to control flow through a heat exchanger, and a pneumatic device to move the door.
Claims19
A flow control assembly, comprising:
- a heat exchanger including fins and openings between the fins, wherein the heat exchanger includes an arcuate profile;
- a door that is moved to control flow through the heat exchanger, wherein the door includes a plurality of arcuate louvers corresponding to the arcuate profile of the heat exchanger and the door is aligned with the fins of the heat exchanger when the door is positioned to allow more flow through the openings between the fins and the door is aligned with the openings between the fins when the door is in a position to restrict flow through the heat exchanger;
- and
- a pneumatic device including a first expandable pneumatic chamber positioned on a first circumferential side of the heat exchanger and a second expandable pneumatic chamber positioned on a second circumferential side of the heat exchanger to move the door.
1 more element
A gas turbine engine, comprising:
- a fan to deliver air into a main bypass flow outer housing, and into a third stream bypass flow outer housing that is radially outwardly of the main bypass flow outer housing;
- a core engine outer housing radially inward of the main bypass flow outer housing, the core engine outer housing enclosing a compressor section and a turbine section;
- at least one duct of the main bypass flow outer housing, the at least one duct extending radially outwardly into the third stream bypass flow outer housing to provide additional flow area at a circumferential location of the at least one duct;
- a heat exchanger at least partially disposed within the at least one duct including fins and openings between the fins;
- and
- a door configured to move to control flow through the heat exchanger, wherein the door includes a plurality of arcuate louvers extending in a circumferential direction and the door is aligned with the fins of the heat exchanger when the door is positioned to allow more flow through the openings between the fins and the door is aligned with the openings between the fins when the door is in a position to restrict flow through the heat exchanger, wherein the door is configured to move in response to pneumatic pressure in a first expandable pneumatic chamber positioned on a first circumferential side of the heat exchanger and pneumatic pressure in a second expandable pneumatic chamber positioned on a second circumferential side of the heat exchanger.
3 more elements
A method of controlling flow through a heat exchanger of a gas turbine engine, comprising:
- pressurizing a chamber to move a door;
- and
- moving the door to increase or decrease flow through the heat exchanger having fins and openings between the fins and the heat exchanger includes an arcuate profile, wherein the door includes a plurality of arcuate louvers corresponding to the arcuate profile of the heat exchanger and the door is aligned with the fins of the heat exchanger when the door is positioned to allow more flow through the openings between the fins and the door is aligned with the openings between the fins when the door is in a position to restrict flow through the heat exchanger, wherein pressurizing the chamber to move the door includes pressurizing a first expandable pneumatic chamber positioned on a first circumferential side of the heat exchanger and pressurizing a second expandable pneumatic chamber positioned on a second circumferential side of the heat exchanger.
Dependencies are inferred from the claim text.