Heat exchanger
AssigneeHamilton Sundstrand Corporation
InventorsAdam Horoszczak, Rafal Lewandowski
Life of this patent
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Abstract
A heat exchanger extends between a first end and a second end and includes: a central core; and a heat exchange section; wherein the heat exchange section comprises: a primary flow inlet; a secondary flow inlet; a primary flow outlet; a secondary flow outlet; a plurality of primary flow tubes for conveying a primary flow from the primary flow inlet to the primary flow outlet; and a plurality of secondary flow tubes for conveying a secondary flow from the secondary flow inlet to the secondary flow outlet. The primary flow tubes and the secondary flow tubes are grouped together to form at least one strand; and wherein the at least one strand is helically wrapped around the central core.
Claims12
A heat exchanger extending between a first end and a second end, the heat exchanger comprising:
- a source of primary fluid;
- a source of secondary fluid, wherein the source of secondary fluid is different than the source of primary fluid;
- a central core;
- and
- a heat exchange section;
- wherein the heat exchange section comprises:
- a primary flow inlet connected to the source of primary fluid and that receives a primary flow;
- a secondary flow inlet connected to the source of secondary fluid and that receives a secondary flow;
- a primary flow outlet;
- a secondary flow outlet;
- a plurality of primary flow tubes for conveying the primary flow from the primary flow inlet to the primary flow outlet;
- and
- a plurality of secondary flow tubes for conveying the secondary flow from the secondary flow inlet to the secondary flow outlet;
- wherein the primary flow tubes and the secondary flow tubes are grouped together to form at least one strand that is wrapped around the central core in a helical manner;
- wherein the primary flow tubes and secondary flow tubes are configured such that, in use, heat transfer occurs between the primary flow and secondary flow;
- wherein the primary fluid is different than the secondary fluid;
- wherein the at least one strand comprises multiple levels of strands including at least one larger, first level strand, and a plurality of smaller, second level strands;
- and
- wherein each second level strand comprises at least one of the primary flow tubes and at least one of the secondary flow tubes twisted together to form the second level strand, and wherein the plurality of second level strands are combined into the at least one larger, first level strand.
A method of making a heat exchanger comprising a first end and a second end, the method comprising:
- providing a source of primary fluid;
- providing a source of secondary fluid, wherein the source of secondary fluid is
- different than the source of primary fluid;
- and
- forming a central core and a heat exchange section;
- wherein the heat exchange section is formed with;
- a primary flow inlet connected to the source of primary fluid and that receives a primary flow;
- a secondary flow inlet connected to the source of secondary fluid and that receives a secondary flow;
- a primary flow outlet;
- a secondary flow outlet;
- a plurality of primary flow tubes for conveying the primary flow from the primary flow inlet to the primary flow outlet;
- and
- a plurality of secondary flow tubes for conveying the secondary flow from the secondary flow inlet to the secondary flow outlet;
- wherein the heat exchange structure is formed so that the primary flow tubes and the secondary flow tubes are grouped together to form at least one strand;
- wherein the at least one strand is helically wrapped around the central core;
- wherein the primary flow tubes and secondary flow tubes are configured such that, in use, heat transfer occurs between the primary flow and secondary flow;
- wherein the primary fluid is different than the secondary fluid;
- wherein the at least one strand comprises multiple levels of strands including at least one larger, first level strand, and a plurality of smaller, second level strands;
- and
- wherein each second level strand comprises at least one of the primary flow tubes and at least one of the secondary flow tubes twisted together to form the second level strand, and wherein the plurality of second level strands are combined into the at least one larger, first level strand.
Dependencies are inferred from the claim text.