| US 7,507,387 B2 | ||
| Microreactor | ||
| Kazuhiro Mae, Kyoto (Japan); and Hideharu Nagasawa, Minami-Ashigara (Japan) | ||
| Assigned to FUJIFILM Corporation, Tokyo (Japan) | ||
| Filed on May 28, 2004, as Appl. No. 10/855,980. | ||
| Claims priority of application No. 2003-154405 (JP), filed on May 30, 2003; and application No. 2003-189658 (JP), filed on Jul. 01, 2003. | ||
| Prior Publication US 2005/0031507 A1, Feb. 10, 2005 | ||
| Int. Cl. B01J 19/00 (2006.01); B01J 19/24 (2006.01); B01F 5/00 (2006.01) | ||
| U.S. Cl. 422—224 [422/129; 422/130; 422/228; 366/341; 366/336] | 5 Claims |
| 1. A microreactor which leads a plurality of fluids through respective fluid feed channels of the fluids to merge in one reaction
channel and causes the fluids to react with each other while circulating, said microreactor comprising:
a round-bar-shaped core member of which outer surface has a circular cross section;
a first cylindrical member of which inner and outer surfaces have circular cross sections, said round-bar-shaped core member
being inserted in said first cylindrical member; and
a second cylindrical member of which inner surface has a circular cross section, said first cylindrical member being inserted
in said second cylindrical member,
wherein a reaction channel is formed as first and second spiral channels connected in series, said first spiral channel being
formed by cutting a first spiral screw in any one of the outer surface of said round-bar-shaped core member and the inner
surface of said first cylindrical member and engaging the outer surface of said core member in contact with the inner surface
of said first cylindrical member, said second spiral channel being formed by cutting a second spiral screw in any one of the
outer surface of said first cylindrical member and the inner surface of said second cylindrical member and engaging the outer
surface of said first cylindrical member in contact with the inner surface of said second cylindrical member,
wherein a start part or intermediate part of said reaction channel is provided with a mixing section formed into a channel
structure where said plurality of fluids can be mixed, and
wherein said mixing section is made up of first convex sections protruding in a collar form in the diameter direction and
second convex sections protruding in a collar form in the diameter direction arranged in a staggered configuration in the
flow direction of said plurality of fluids.
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