Patent ID: 8505641

Claim:
An electrification spray head comprising: a small-particle head unit and a large-particle head unit which are laterally arranged adjacent to each other; wherein the small-particle-size head unit has (i) a small-particle jetting nozzle converting a water-based fire-extinguishing agent into particles having an average particle size within the range of 30 μm to 200 μm by jetting the agent to external space so as to spray the particles, (ii) a water-current swirling core swirling a water current supplied to the small-particle jetting nozzle, (iii) an induction electrode unit disposed in a jetting space side of the small-particle jetting nozzle, and (iv) a water-side electrode unit disposed in the small-particle jetting nozzle and in contact with the water-based fire-extinguishing agent; wherein the large-particle-size head unit has (i) a large-particle jetting nozzle converting the water-based fire-extinguishing agent into particles having an average particle size within the range of 200 μm to 2000 μm by jetting the agent to external space so as to spray the particles, (ii) a water-current swirling core swirling a water current supplied to the large-particle jetting nozzle, (iii) an induction electrode unit disposed in a jetting space side of the large-particle jetting nozzle, and (iv) a water-side electrode unit disposed in the large-particle jetting nozzle and in contact with the water-based fire-extinguishing agent; and wherein an external electric field is generated by applying a voltage between the induction electrode units and the water-side electrode units of the small-particle-size head unit and the large-particle-size head unit to the water-based fire-extinguishing agent being subjected to a jetting process by the small-particle jetting nozzle and the large-particle jetting nozzle so as to electrify the jetted particles.