Micro-channels, micro-mixers, and micro-reactors
View Patent ↗A fluid micro-mixer and micro-reactor array is provided having at least two bonded layers of micro-channels. The micro-mixer can include at least one input port and one output port, and a mixing and/or reaction port. At least one inlet stream separator layer can isolate the inlet ports from one another.
1. A fluid micro-mixer apparatus comprising: a plurality of first microchannels, comprising at least one input port and at least one output port, the first microchannels being configured to receive a first fluid; and a plurality of second microchannels, comprising at least one input port and at least one output port, the second microchannels being configured to receive a second fluid, wherein a plurality of patterned laminae are stacked so that adjacent patterned laminae define the first or second microchannels therebetween, the first and second microchannels having a width in a direction that is generally parallel to a plane of an adjacent lamina and a height in a direction that is generally perpendicular to the plane of the adjacent lamina, and the width of the first microchannels is greater than the height of the first microchannels and the width of the second microchannels is greater than the height of the second microchannels, and comprising at least one separating structure within one or more of the first and second microchannels configured to mechanically separate dispersed phase components from a continuous phase of the first or second fluids.
2. The apparatus of claim 1 , wherein the plurality of first and second microchannels are interdigitated.
3. The apparatus of claim 1 , further comprising at least one reaction chamber disposed to receive the first and second fluids.
4. The apparatus of claim 1 , further comprising at least one mixing chamber, the mixing chamber being disposed between at least one of the input ports and at least one of the output ports, wherein the mixing chamber is configured to receive both first and second fluids.
5. The apparatus of claim 1 , further comprising a binding material disposed between adjacent patterned laminae.
6. The apparatus of claim 1 , wherein the first and second fluids have unequal flow rates.
7. The apparatus of claim 1 , further comprising one or more additional microchannels configured to receive an additional one or more fluids, the additional one or more fluids being different from the first and second fluids.
8. The apparatus of claim 1 , comprising a plurality of reaction chambers arranged in parallel in a dense array.
9. The apparatus of claim 1 , wherein the outlet ports of the second microchannels have a smaller exit area than the outlet ports of the first microchannels.
10. The apparatus of claim 1 , further comprising one or more drivers configured to provide pulsed flow to the second fluid.
11. The apparatus of claim 10 , wherein the one or more drivers comprise piezo micropumps.
12. The apparatus of claim 4 , where the mixing chamber contains flow paths defined by at least some of the plurality of the patterned laminae.
13. The apparatus of claim 1 , further comprising a plurality of orifices between at least some adjacent microchannels.
14. The apparatus of claim 13 , wherein the plurality of orifices are spaced to provide controlled introduction of a second fluid to a first fluid.
15. A fluid micro-mixer apparatus comprising: a plurality of patterned laminae that are stacked so that adjacent patterned laminae define microchannels therebetween, wherein at least some of the microchannels comprise first outlet ports, the first outlet ports having a width in a direction that is generally parallel to a plane of an adjacent lamina and a height in a direction that is generally perpendicular to the plane of the adjacent lamina, and the width of the plurality of first outlet ports is greater than the height of the outlet ports wherein at least some of the microchannels comprise second outlet ports, the second outlet ports comprising nozzles that have a smaller area than the first outlet ports.
16. The apparatus of claim 15 , wherein adjacent microchannels formed by the patterned laminae do not intersect with one another, such that delivery of a first fluid and a second fluid through adjacent microchannels does not result in mixing of the first and second fluids until exiting the microchannels.
17. The apparatus of claim 15 , further comprising one or more drivers configured to provide pulsed flow of fluid out of the nozzles.
18. The apparatus of claim 17 , wherein the one or more drivers comprise piezo micropumps.