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A device for mixing at least two separate streams of components which, when mixed, form a combined fluid stream. The device comprises a conduit with at least two separate passageways leading to exit openings at an end face of the conduit. Each passageway communicates with a separate component stream

A device for mixing at least two separate streams of components which, when mixed, form a combined fluid stream. The device comprises a conduit with at least two separate passageways leading to exit openings at an end face of the conduit. Each passageway communicates with a separate component stream and is arranged to direct the separate component stream in a downstream direction. The exit openings each have a predetermined cross-sectional flow area. A separate channel is located at a downstream end of each passageway exit opening. The channels are arranged to redirect the flow from each passageway to an axial direction. A single mixing chamber communicates with all of the separate channels, the mixing chamber being arranged to receive each of the component streams at an upstream end thereof and to permit a mixing of the component streams. An outlet is arranged downstream of the mixing chamber through which the combined fluid stream is dispensed.

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1. A device for mixing at least two separate streams of components which, when mixed, form a combined fluid stream, the device comprising: a conduit with at least two separate passageways, each passageway communicating with a separate component stream and arranged to direct the separate component st

1. A device for mixing at least two separate streams of components which, when mixed, form a combined fluid stream, the device comprising: a conduit with at least two separate passageways, each passageway communicating with a separate component stream and arranged to direct the separate component stream in a downstream direction toward exit openings of the passageways in an end face of the conduit, the exit openings each having a predetermined cross-sectional flow area,a separator element engaged with the end face of the conduit, the separator element having at least one separate channel communicating exclusively with each passageway,a mixing chamber communicating with all of the separate channels, the mixing chamber being arranged to receive each of the component streams at an upstream end thereof and to permit a mixing of the component streams, andan outlet positioned downstream of the mixing chamber through which the combined fluid stream is dispensed. 2. The device according to claim 1 including a mixing element positioned at a downstream end of the mixing chamber, the mixing element being configured to thoroughly mix the component streams into the combined fluid stream. 3. The device according to claim 2, wherein the mixing element comprises a three-dimensional lattice defining a plurality of tortuous, interconnecting passages therethrough. 4. The device according to claim 1 including a spray nozzle positioned at the outlet to dispense the combined fluid stream. 5. The device according to claim 4, wherein the spray nozzle comprises a swirl nozzle. 6. The device according to claim 1, wherein the separator element comprises a number of separate channels which is twice the number of passageways. 7. A device for mixing at least two separate streams of components which, when mixed, form a combined fluid stream, the device comprising: a conduit with at least two separate passageways, each passageway communicating with a separate component stream and arranged to direct the separate component stream in a downstream direction toward exit openings of the passageways in an end face of the conduit, the exit openings each having a predetermined cross-sectional flow area,a separator element engaged with the end face of the conduit, the separator element having a separate channel communicating with each passageway,a mixing chamber communicating with all of the separate channels, the mixing chamber being arranged to receive each of the component streams at an upstream end thereof and to permit a mixing of the component streams, andan outlet positioned downstream of the mixing chamber through which the combined fluid stream is dispensedwherein the separate channels are defined by internal walls of the separator element to separate the channels from one another and configured such that each separate channel communicates with only one of the passageways. 8. The device according to claim 7, wherein the separator element comprises a number of separate channels which is twice the number of passageways. 9. The device according to claim 1, wherein the mixing chamber has a cross-sectional flow area larger than the cross-sectional flow area of each separate channel. 10. The device according to claim 1, wherein the mixing chamber has a cross-sectional flow area larger than a combined total cross-sectional flow area of all of the separate channels. 11. The device according to claim 1, wherein the separator element and the mixing chamber are provided in a removable spray head separate from the conduit housing the at least two separate passageways, the removable spray head attaching to the passageway conduit via a luer fitting. 12. The device according to claim 1, wherein the passageway exit openings in the end face are angularly spaced apart from each other at equal angular orientations. 13. A device for mixing at least two separate streams of components which, when mixed, form a combined fluid stream, the device comprising: a conduit with at least two separate passageways, each passageway communicating with a separate component stream and arranged to direct the separate component stream in a downstream direction toward exit openings of the passageways in an end face of the conduit, the exit openings each having a predetermined cross-sectional flow area,a separator element engaged with the end face of the conduit, the separator element having a separate channel communicating with each passageway,a mixing chamber communicating with all of the separate channels, the mixing chamber being arranged to receive each of the component streams at an upstream end thereof and to permit a mixing of the component streams, andan outlet positioned downstream of the mixing chamber through which the combined fluid stream is dispensed,wherein the passageway exit openings in the end face are angularly spaced apart from each other at equal angular orientation,wherein the separator element comprises two separate channels for every passageway and internal longitudinal separation walls are provided between each of the separate channels, the internal longitudinal separation walls being arranged at angular positions, relative to one another, which are at angles one half of the angles of the angular orientations of the passageway exits.