How is an upright sprinkler designed in terms of water spray direction?

An upright sprinkler is designed to direct water spray upwards against the deflector. This unique design allows the water to be dispersed in a radial pattern as it hits the deflector. The result is that the water droplets are spread out over a wide area below, ensuring an effective distribution that can cover a larger fire risk zone. The upward direction of the spray is essential for maximizing the reach and coverage of the water, especially in areas with higher ceilings. By ensuring that the spray starts off aiming upwards, the sprinkler can better combat the heat and smoke produced by a fire that rises in a space, providing an efficient means of fire suppression.