Patent ID: 8555809

Claim:
A device comprising: an evaporator; and a heat exchanger; the heat exchanger being in fluid communication with the evaporator; the evaporator comprising: an outer casing; and an inner casing that is disposed within the outer casing; the inner casing contacting a plate; wherein the inner casing encloses: a first conduit that is operative to introduce a carrier fluid into the evaporator; wherein the first conduit is an inverted U-shaped conduit that has one end in fluid communication with a first port for introducing the carrier fluid into the evaporator and an opposing end in fluid communication with a sparger; and a second conduit that is operative to remove the carrier fluid entrained with a precursor; wherein the outer casing is detachably attached to the plate; the plate contacting a first precursor conduit that is operative to introduce the precursor into the evaporator from the heat exchanger; where the heat exchanger is disposed proximate to the evaporator at a distance effective to maintain the precursor in the evaporator at a substantially constant temperature when the ambient temperature around the heat exchanger and the evaporator fluctuates by an amount of up to about ±35° C.