Patent ID: 7678326

Claim:
An apparatus for manufacturing fine particles, comprising: a cylindrical reactor having a first end and a second end opposite to the first end; a first inlet part including at least one port introducing a reactive gas flow containing a fine particle source material along an axial direction of the reactor, the first inlet part being provided on the first end of the reactor; a second inlet part including at least one port introducing a diluting gas flow along the axial direction of the reactor, the second inlet part being provided on the second end of the reactor approximately counter-flow to the first inlet part; a heater exciting the fine particle source material contained in the reactive gas flow; a first plate including through-holes which substantially equalize a flow rate of the reactive gas flow with respect to a cross section of a flow channel, the first plate being disposed inside the reactor almost perpendicularly with the axial direction of the reactor; a second plate facing to the first plate, including through-holes which substantially equalize a flow rate of the diluting gas flow with respect to a cross section of a flow channel, the second plate being disposed inside the reactor almost perpendicularly with respect to the axial direction of the reactor; a gas exhaust port provided in a merging region where the reactive gas flow passed through the first plate and the diluting gas flow passed through the second plate are merged; and a collector which collects fine particles contained in gas discharged from the gas exhaust port.