Multiple stage flow amplification and mixing system

A fluid amplification and mixing device comprising:

• a first stage including an accelerator configured to restrict a volume of compressed air input to the accelerator at a first velocity such that the air exits the accelerator at a second velocity greater than the first velocity;
• a second stage including a venturi connected to the accelerator to receive the air at the second velocity in a mixture with an input gas supplied at a third velocity and amplify velocity of a mixture of the air and the input gas;
• and
• a third stage including a siphon barrel configured to receive the mixture of the air and the input gas from the second stage for combustion thereof.

A fluid amplification and mixing system adapted for use with a powder sprayer comprising:

• at least one fluid amplification and mixing device including:
• a siphon plug defining a first portion of a passageway being configured to receive compressed air, the siphon plug further defines at least one opening configured to receive atmospheric air in communication with the passageway,
• a venturi defining a second portion of the passageway for receiving the air mixture, the venturi further defining an input port configured to receive propane and at least one accelerator chamber communicating with the input port and the second portion of the passageway, and
• a siphon barrel defining a third portion of the passageway being configured to receive a mixture of the air and propane and supply the mixture to a combustion chamber thereof to produce a flame;
• and
• a powder sprayer having a tip defining an axis and being configured to emit powder toward a substrate, the powder sprayer being disposed adjacent the at least one fluid amplification and mixing device such that the flame is directed at an angle in a range of 8 to 90 degrees from the axis of the tip and the flame is spaced apart from the powder being emitted.