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US 11,684,974 B2Granted
Additive manufactured ducted heat exchanger system
AssigneeRaytheon Technologies Corporation
InventorJohn T. Schmitz
Life of this patent
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Abstract
A ducted heat exchanger system for a gas turbine engine includes an additive manufactured heat exchanger core with a contoured external and/or internal geometry. A method of additively manufacturing a heat exchanger for a gas turbine engine includes additively manufacturing a core of a heat exchanger to set a ratio of local surface area to flow area to control a pressure drop per unit length along the core.
Claims20
A ducted heat exchanger system for a gas turbine engine, comprising:
- a duct with an inlet to a nacelle and an exit from the nacelle for communication of an airflow through the duct;
- a heat exchanger core within the duct, the heat exchanger core comprises a contoured external geometry including:
- a front face of said core that is transverse to the duct and contoured so that said front face extends along an engine central longitudinal axis into a diffusion area of the duct within which said core is located, and a rear face of said core that is transverse to the duct and contoured so that said rear face extends along the engine central longitudinal axis into a contraction area of the duct within which said core is located;
- wherein said rear face is downstream of the front face and within the duct along the engine central longitudinal axis and wherein a width of the core measured along the central longitudinal axis from the front face to the rear face is varied along a radial direction.
1 more element
A ducted heat exchanger system for a gas turbine engine, comprising:
- a nacelle that forms a duct with an inlet to the nacelle and an exit from the nacelle for communication of an airflow through the duct;
- and
- a heat exchanger core within the duct in said nacelle, said heat exchanger core comprising a contoured internal geometry contoured such that at least one of a multiple of flow passages extending from a front face of the core to a rear face of the core is curved along a length of the at least one flow passage, and said heat exchanger core comprising an external geometry shaped to fit within the duct, the external geometry comprising:
- the front face of said core that is transverse to the duct and contoured, and the rear face of said core that is transverse to the duct and contoured;
- wherein said rear face is downstream of the front face and within the duct along an engine central longitudinal axis and wherein a width of the core measured along the central longitudinal axis from the front face to the rear face is varied along a radial direction such that at least two of the multiple flow passages have different flow passage lengths from the front face to the rear face.
2 more elements
Dependencies are inferred from the claim text.