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US 11,156,141 B2Granted
Fluid injectors for hot flow
AssigneeDelavan Inc.
InventorsJohn Earl Short, Randall J. Quandt
Life of this patent
Estimating the term…
Abstract
A fluid injector for injecting an injection fluid into a hot flow can include a flow structure defining an injection flow channel and configured to extend at least partially into a flow path to introduce the injection fluid into the hot flow in the flow path. The flow structure can include one or more heat resistance features to protect the flow structure and the fluid from heat of the hot flow.
Claims17
A fluid injector for injecting an injection fluid into a hot flow, comprising:
- a flow structure defining an injection flow channel and configured to extend at least partially into a flow path to introduce the injection fluid into the hot flow in the flow path, wherein the flow structure includes a base, a stem extending from the base to an injector head at a distal end of the stem, wherein the flow structure includes one or more heat resistance features to protect the flow structure and the fluid from heat of the hot flow, wherein the stem is configured to extend the injector head into a center of the flow path, wherein the structure defines a cooling channel enclosed therein and configured to circulate a cooling fluid from an inlet on the base, through the stem, to the injector head, and back through the stem to an outlet on the base, wherein the cooling channel includes at least one tortuous path in the injector head to wind at least partially within the injector head in at least one direction.
A selective catalytic reaction (SCR) system, comprising:
- a diesel exhaust fuel (DEF) injector configured to receive diesel fuel to cool the diesel exhaust fluid injector, wherein the DEF injector includes:
- a flow structure defining an injection flow channel and configured to extend at least partially into a flow path to introduce the injection fluid into the hot flow in the flow path, wherein the flow structure includes a base, a stem extending from the base to an injector head at a distal end of the stem, wherein the flow structure includes one or more heat resistance features to protect the flow structure and the fluid from heat of the hot flow, wherein the structure defines a cooling channel enclosed therein and configured to circulate a cooling fluid from an inlet on the base, through the stem, to the injector head, and back through the stem to an outlet on the base, wherein the cooling channel includes at least one tortuous path in the injector head to wind at least partially within the injector head in at least one direction.
Dependencies are inferred from the claim text.