| 摘要 |
The present invention relates to the field of fire nozzles and more particularly relates to a foam-generating device of a fire nozzle. 5 A problem in the field of foam nozzles relates to the insufficiency and inhomogeneity of the expansion of the water/foam-forming agent and air premix. The device of the present invention proposes to coaxially well laid-out in a nozzle spout (1), a divergent cone (2) provided with splines in order to lo generate divergent, strong, and separate jets of the premix against the internal surface of the nozzle spout to stimulate the sucking of air towards the inside of the nozzle spout. The device can provide two advantages: - increasing expansion by doubling the contact surface area and 15 by generating powerful mixing between the air and the premix, and - increasing the range of the foam jet by progressive acceleration of the premix. 2a 2c 2b Figure 2 Figure 3 5 7 -D blb Figure 4 1s lb la |
