Patent ID: 8769749

Claim:
A cleaning device for cleaning a mixing vaporizer, wherein the mixing vaporizer comprises a first hole that a raw material flows in therethrough, a second hole that carrier gas flows in therethrough, a mixing space that generates mixed gas by mixing the raw material and the carrier gas, a carrier gas nozzle that is connected to the second hole for supplying the carrier gas to the mixing space, and a third hole that discharges the mixed gas, wherein the cleaning device cleans the mixing vaporizer by circulating a cleaning solution through at least one the first hole, the second hole, and the third hole, wherein the cleaning device comprises: a cleaning solution tank for storing the cleaning solution; a circulation pump for circulating the cleaning solution in the mixing vaporizer; and a direction-changing member, wherein the direction-changing member connecting the first hole and the second hole to the circulation pump and connecting the third hole to the cleaning solution tank during a circulation in a normal direction, and the direction-changing member connecting the third hole to the circulation pump and connecting the first hole and the second hole to the cleaning solution tank during a circulation in a reverse direction, wherein the mixing vaporizer is cleaned along the normal direction and the reverse direction by the direction-changing member.