Pulse-jet atomizer mechanism for sprinkling chemicals

An atomizer mechanism for sprinkling chemicals, comprising a pulse jet engine, which atomizes chemicals supplied from a chemical supply unit using high speed exhaust gas generated through explosion, a combustible air-fuel mixture supply unit containing a precombustion chamber communicated with the combustion chamber of the pulse jet engine and a carburetor for supplying atomized fuel through a collecting valve into said precombustion chamber, and an engine starter having both a manual pump for pressurizing fuel and for supplying atomized fuel into the precombustion chamber by pump operation when the pulse jet engine is started, and first means for igniting said atomized fuel, characterized in that:

• a compressed air inflow passage is connected between a compressed air source and said precombustion chamber, for injecting compressed air into the precombustion chamber, without the compressed air first passing through the collecting valve, such that the injection compressed air is projected toward the collecting valve from within the precombustion chamber, and a fuel supply passage for starting operation, which can supply the fuel pressurized by the manual pump, is connected to the middle of the compressed air inflow passage.