FIELD: cleaning of heat exchangers from external deposits. SUBSTANCE: device for cleaning of external surfaces of articles uses mixer 1 connected through flame tubes 2 and 3 to the ends of pulse chamber 4 furnished with nozzles 5,6,7. Torches 8,9 and 10 connected to control unit 11 are located on flame tubes 2 and 3. Ignition torch 8, by means of which pulse is generated in the throat of nozzle 7, is away from the beginning of the flame tube at distance S2, and ignition torch 10 which controls operation of nozzle 5 at distance S1. EFFECT: facilitated procedure. 3 cl, 1 dwg
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