Patent ID: 8585022

Claim:
An apparatus for generating microbubbles in liquid using a mixed fluid supplied from outside, the mixed fluid having a gas and a liquid mixed together, the apparatus comprising: a body having a cylindrical shape, wherein the body comprises an inlet in one side thereof which is coupled to a conduit through which the mixed fluid is introduced, an outlet in the other side thereof, and a cylindrical space section defined therein, a diameter of the space section being greater than each diameter of the inlet and the outlet; an inner container member installed in the space section such that a tubular passage is formed around the inner container member; a first collision section having a circular shape, wherein the first collision section is provided on the inner container member in an inlet side direction such that the mixed fluid introduced through the inlet collides against the first collision section and is stirred; and a second collision section having an “L” shaped cross-section, wherein the second collision section is provided at an inner surface of the body adjacent to the outlet such that the mixed fluid introduced through the inlet and passed through the tubular passage collides against the second collision section and is stirred, wherein each of the first and second collision sections has protrusions on an outer surface thereof.