Asymmetric cross counter flow heat exchanger
AssigneeHamilton Sundstrand Corporation
InventorAlan Retersdorf
Life of this patent
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Abstract
A hot layer adapted for use in an asymmetric cross counter flow heat exchanger core that includes a number of alternating hot and cold layers, a hot inlet tent configured to receive a hot inlet flow and defining a hot inlet tent width, and a hot outlet tent configured to discharge a hot outlet flow and defining a hot outlet tent width. A hot inlet closure bar is located adjacent to the hot inlet tent, a hot outlet closure bar is located adjacent to the hot outlet tent, and two hot side closure bars are each located adjacent to respective corresponding inlet and outlet hot fins. An angle between the inlet fin direction and the middle fin direction ranges from 5-175 degrees, and the hot inlet tent width is less than the hot outlet tent width.
Claims20
A hot layer adapted for use in an asymmetric cross counter flow heat exchanger core that includes a plurality of alternating hot and cold layers, the hot layer comprising:
- a plurality of inlet hot fins defining an inlet fin direction;
- a plurality of middle hot fins defining a middle fin direction;
- a plurality of outlet hot fins defining an outlet fin direction;
- a hot inlet closure bar on a first end of the hot layer and extending along the plurality of middle hot fins;
- a hot outlet closure bar on a second end of the hot layer and extending along the plurality of middle hot fins;
- a first hot side closure bar on a first side of the hot layer and disposed adjacent to the inlet hot fins;
- a second hot side closure bar on a second side of the hot layer and disposed adjacent to the outlet hot fins;
- a hot inlet on the first end of the hot layer and extending between the hot inlet closure bar and the first hot side closure bar and having a hot inlet width, wherein the hot inlet is configured to receive a hot inlet flow of a hot fluid that enters the hot layer at the hot inlet;
- and
- a hot outlet on the second end of the hot layer and extending between the hot outlet closure bar and the second hot side closure bar and having a hot outlet width, wherein the hot outlet is configured to discharge a hot outlet flow of a cooled hot fluid;
- wherein:
- an angle between the inlet fin direction and the middle fin direction ranges from 5-175 degrees;
- and
- the hot inlet width on the first end of the hot layer is less than the hot outlet width on the second end of the hot layer;
- a hot inlet closure bar width of the hot inlet closure bar is greater than a hot outlet closure bar width of the hot outlet closure bar;
- and
- the hot layer having a layer length in a direction of the inlet hot fins and a layer width in a direction that is perpendicular to the layer length, wherein a ratio of the hot inlet width on the first end of the hot layer to the layer width ranges from 5-50%, and wherein a ratio of the hot outlet width on the second end of the hot layer to the layer width ranges from 50-90%.
A hot layer adapted for use in an asymmetric cross counter flow heat exchanger core that includes a plurality of alternating hot and cold layers, the hot layer comprising:
- a plurality of inlet hot fins defining an inlet fin direction;
- a plurality of middle hot fins defining a middle fin direction;
- a plurality of outlet hot fins defining an outlet fin direction;
- a hot inlet closure bar on a first end of the hot layer and extending along the plurality of middle hot fins;
- a hot outlet closure bar on a second end of the hot layer and extending along the plurality of middle hot fins;
- a first hot side closure bar on a first side of the hot layer and disposed adjacent to the inlet hot fins;
- a second hot side closure bar on a second side of the hot layer and disposed adjacent to the outlet hot fins;
- a hot inlet on the first end of the hot layer and extending between the hot inlet closure bar and the first hot side closure bar and having a hot inlet width, wherein the hot inlet is configured to receive a hot inlet flow of a hot fluid that enters the hot layer at the hot inlet;
- and
- a hot outlet on the second end of the hot layer and extending between the hot outlet closure bar and the second hot side closure bar and having a hot outlet width, wherein the hot outlet is configured to discharge a hot outlet flow of a cooled hot fluid;
- wherein:
- the hot inlet width on the first end of the hot layer is less than the hot outlet width on the second end of the hot layer;
- a hot inlet closure bar width of the hot inlet closure bar is greater than a hot outlet closure bar width of the hot outlet closure bar;
- the hot layer having a layer width in a direction of the middle hot fins, wherein a ratio of the hot inlet width on the first end of the hot layer to the layer width ranges from 5-50%, and wherein a ratio of the hot outlet width on the second end of the hot layer to the layer width ranges from 50-90%;
- and
- an angle between the inlet fin direction and the middle fin direction is less than 90 degrees.
Dependencies are inferred from the claim text.