Fluid injector and mixer apparatus
First Claim
1. A fluid injector having improved fluid mixing capabilities, said injector comprising:
- a body for directing the flow of a carrier fluid, said body having an internal wall forming a flow passage therethrough, said flow passage having a central axis, an inlet, an outlet, and a port for receiving a secondary fluid that is mixed with said carrier fluid, a ramp-like restriction portion in said flow passage, said restriction located downstream of said inlet and upstream of said port and configured so as to decrease the effective cross-sectional area of said flow passage in the direction of the flow of said carrier fluid, a ramp-like expansion portion in said flow passage, said expansion located downstream of said port and upstream of said outlet and configured so as to increase the effective cross-sectional area of said flow passage in the direction of the flow of said carrier fluid, a throat portion in said flow passage, said throat situated between said restriction and expansion portions, said throat portion having a cross-sectional area that is less than the cross-sectional area of said passage inlet, said throat having a cavity that extends from the internal wall of said throat into said body, wherein said port enters said flow passage at a location in said throat cavity, and wherein said cavity configured so to allow for a vortical flow of said secondary fluid in said cavity.
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Accused Products
Abstract
An improved injector which mixes a secondary fluid into a carrier fluid stream has (a) a body for directing the flow of the carrier fluid, this body having an internal wall forming a flow passage therethrough, a central axis, an inlet, an outlet, and a port for receiving the secondary fluid that is mixed with the carrier fluid, (b) a ramp-like restriction portion which is located downstream of the body'"'"'s inlet and upstream of the secondary fluid port and configured so as to decrease the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (c) a ramp-like expansion portion which is located downstream of the secondary fluid port and upstream of the body'"'"'s outlet and configured so as to increase the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (d) a throat portion which is situated between the restriction and expansion portions, and (e) a cavity in the throat that extends from its internal wall and into the body, with the port entering the flow passage at a location in the throat cavity, and wherein this cavity is configured so to promote a vortical flow of the secondary fluid in the cavity.
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Citations
16 Claims
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1. A fluid injector having improved fluid mixing capabilities, said injector comprising:
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a body for directing the flow of a carrier fluid, said body having an internal wall forming a flow passage therethrough, said flow passage having a central axis, an inlet, an outlet, and a port for receiving a secondary fluid that is mixed with said carrier fluid, a ramp-like restriction portion in said flow passage, said restriction located downstream of said inlet and upstream of said port and configured so as to decrease the effective cross-sectional area of said flow passage in the direction of the flow of said carrier fluid, a ramp-like expansion portion in said flow passage, said expansion located downstream of said port and upstream of said outlet and configured so as to increase the effective cross-sectional area of said flow passage in the direction of the flow of said carrier fluid, a throat portion in said flow passage, said throat situated between said restriction and expansion portions, said throat portion having a cross-sectional area that is less than the cross-sectional area of said passage inlet, said throat having a cavity that extends from the internal wall of said throat into said body, wherein said port enters said flow passage at a location in said throat cavity, and wherein said cavity configured so to allow for a vortical flow of said secondary fluid in said cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for injecting a secondary fluid into a carrier fluid that flows through a body that directs the flow of said carrier fluid, said body having an internal wall forming a flow passage therethrough, said flow passage having a central axis, an inlet, an outlet, and a port for receiving said secondary fluid that is mixed with said carrier fluid, said method comprising the steps of:
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providing a ramp-like restriction portion in said flow passage, said restriction located downstream of said inlet and upstream of said port and configured so as to decrease the effective cross-sectional area of said flow passage in the direction of the flow of said carrier fluid, providing a ramp-like expansion portion in said flow passage, said expansion located downstream of said port and upstream of said outlet and configured so as to increase the effective cross-sectional area of said flow passage in the direction of the flow of said carrier fluid, providing a throat portion in said flow passage, said throat situated between said restriction and expansion portions, said throat portion having a cross-sectional area that is less than the cross-sectional area of said passage inlet, providing said throat with a cavity that extends from the internal wall of said throat into said body, wherein said port enters said flow passage at a location in said throat cavity, and wherein said cavity configured so to allow for a vortical flow of said secondary fluid in said cavity. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification