Heat exchangers with flow-modifying heat exchanger core tubes
AssigneeHamilton Sundstrand Corporation
InventorsJohn Giuliano, Viktor Kilchyk, Paul M. Colson
Life of this patent
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Abstract
A heat exchanger includes a first header including a fluid inlet, a second header positioned downstream of the first header with respect to a first internal fluid flow path of a first fluid and including a fluid outlet, and a core extending from the first header to the second header. The core includes a plurality of flow-modifying core tubes that are shaped, angled, and/or arranged to modify flow through the heat exchanger along a second external fluid flow path. The plurality of flow-modifying core tubes includes airfoil tubes with corresponding airfoil cross-sections.
Claims16
A heat exchanger comprising:
- a first header including a fluid inlet;
- a second header positioned downstream of the first header with respect to a first internal fluid flow path of a first fluid and including a fluid outlet;
- and
- a core extending from the first header to the second header, the core comprising a plurality of flow-modifying core tubes that are shaped, angled, and arranged to modify flow through the heat exchanger along a second external fluid flow path, the plurality of flow-modifying core tubes including airfoil tubes with corresponding airfoil cross-sections,
- wherein the airfoil tubes of the plurality of flow-modifying core tubes are arranged in a plurality of rows, each of the plurality of rows comprising a subset of at least three of the plurality of flow-modifying core tubes, and wherein the angle of attack of the airflow tubes in any given row is larger than the angle of attack of the airfoil tubes in a row that is closer to the center row of the plurality of rows.
An open-volume heat exchanger comprising:
- a first header including a fluid inlet;
- a second header positioned downstream of the first header with respect to a first internal fluid flow path of a first fluid and including a fluid outlet;
- and
- a core extending from the first header to the second header, the core comprising a tube bank with open sides that extends from a first end to a second end with respect to a second external fluid flow path and that includes a plurality of airfoil tubes arranged in a plurality of rows, each of the plurality of rows comprising a subset of at least three of the plurality of airfoil tubes;
- wherein one or more airfoil tubes of the plurality of airfoil tubes that are located proximal to the open sides of the tube bank are angled or shaped to modify flow through the heat exchanger along the second external fluid flow path such that portions of the flow are prevented from escaping through open sides of the tube bank, and wherein the angle of attack of the airflow tubes in any given row is larger than the angle of attack of the airfoil tubes in a row that is closer to the center row of the plurality of rows.
A heat exchanger comprising:
- a first header including a fluid inlet;
- a second header positioned downstream of the first header with respect to a first internal fluid flow path of a first fluid and including a fluid outlet;
- and
- a core extending from the first header to the second header, the core comprising a plurality of flow-modifying core tubes arranged in a plurality of rows, each of the plurality of rows comprising a subset of at least three of the plurality of flow-modifying core tubes;
- wherein the plurality of flow-modifying core tubes includes:
- airfoil tubes arranged in the plurality of rows such that the angle of attack of the airflow tubes in any given row is larger than the angle of attack of the airfoil tubes in a row that is closer to the center row of the plurality of rows;
- and
- a combination of airfoil tubes and round tubes.
Dependencies are inferred from the claim text.