Coke catching screen
AssigneeHamilton Sundstrand Corporation
InventorMurtuza Lokhandwalla
Life of this patent
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Abstract
A flow diverter of a coke catching element is provided. The flow diverter includes a body disposable in a flow field and defining an interior, an upstream end, which is defined relative to the flow field, and a downstream end, which is downstream from the upstream end. At least one of the upstream end and the downstream end is open to the interior and the other of the upstream end and the downstream end is closed. The interior diverges at the one of the upstream end and the downstream end that is open and converges at the other of the upstream end and the downstream end.
Claims12
A flow diverter of a coke catching element, comprising:
- a body disposable in a flow field and defining an interior;
- an upstream end, which is defined relative to the flow field;
- and
- a downstream end, which is downstream from the upstream end,
- wherein:
- at least one of the upstream end and the downstream end is open to the interior and the other of the upstream end and the downstream end is closed, and
- the interior diverges at the one of the upstream end and the downstream end that is open and converges at the other of the upstream end and the downstream end,
- wherein the upstream end is open and the downstream end is closed and the body comprises:
- a leading edge at the upstream end;
- a trailing edge at the downstream end;
- and
- interior and exterior corners axially interposed between the leading and trailing edges,
- wherein the body increases in thickness from the leading edge to the interior and exterior corners and decreases in thickness from the interior and exterior corners to the trailing edge.
A fuel system, comprising:
- an engine;
- a fuel tank to supply fuel to the engine;
- and
- a coke catching element interposed between the fuel tank and the engine, the coke catching element comprising screening media to screen fuel supplied to the engine, the screening media comprising:
- flow diverters arranged to form intervening spaces,
- at least one of the flow diverters comprising a body defining an interior with upstream and downstream ends,
- the upstream and downstream ends being open and closed, respectively, or closed and open, respectively, to form a stagnant, recirculating flow in the interior via the open one of the upstream and downstream ends to promote coke deposition in the interior at the closed one of the upstream and downstream ends, which prevents fluid flow therethrough, while maintaining a minimal pressure drop in the intervening space,
- wherein each flow diverter comprises a body disposable in a flow field of the fuel supplied to the engine and defining the interior, an upstream end, which is defined relative to the flow field and a downstream end, which is downstream from the upstream end,
- wherein:
- at least one of the upstream end and the downstream end is open to the interior and the other of the upstream end and the downstream end is closed,
- the interior diverges at the one of the upstream end and the downstream end that is open and converges at the other of the upstream end and the downstream end,
- the upstream end is open and the downstream end is closed and the body comprises a leading edge at the upstream end, a trailing edge at the downstream end and interior and exterior corners axially interposed between the leading and trailing edges,
- wherein:
- the body increases in thickness from the leading edge to the interior and exterior corners and the body decreases in thickness from the interior and exterior corners to the trailing edge such that, in intervening spaces between the flow diverters, converging and diverging sections are formed to maintain a minimal pressure drop therein.
Dependencies are inferred from the claim text.