Patent ID: 8287179

Claim:
A fluid mixer for mixing a first fluid and a second fluid and comprising: an introducing component having a bore; a cylindrical component fitted into the bore of said introducing component and comprising a cylindrical section and a conical section projecting from a bottom of the cylindrical section; and a mixing component having a conical recess and on which said introducing component and said cylindrical component are held, said fluid mixer further comprising: a first introducing flow path for receiving the first fluid; a first distributing flow path for distributing the first fluid introduced from said first introducing flow path over the whole circumference of said cylindrical component; a second introducing flow path for receiving the second fluid; a second distributing flow path of an annular shape concentric with said cylindrical component and for distributing the second fluid introduced from said second introducing flow path so that the first fluid and the second fluid are alternately arranged in an circumferential direction; a joining part for joining together the first fluid fed from said first distributing flow path and the second fluid fed from said second distributing flow path with the first fluid and the second fluid alternately arranged in said circumferential direction; a mixing flow path formed between said conical section of said cylindrical component and said conical recess of said mixing component for mixing the first and second fluids, the cross sectional area of said mixing flow path in a direction perpendicular to the gravity direction being constant or increasing in the flow direction; and a discharge flow path for discharging mixed fluid of the first and second fluids fed from said mixing flow path.