The principles of sprayer are divided into four types:
The first one uses the Bernoulli principle.
The Bernoulli principle says that in the same fluid, the flow rate is large and the pressure is small; the flow rate is small and the pressure is strong. The fluid will automatically flow from high pressure to low pressure. When passing through the trigeminal tube, the low-speed flowing water flows to the high-speed flowing air. The water is torn by a high-speed air into a small drop (assuming that the water flowing out of the faucet is slow at the beginning, it is a water column; but then the speed gradually increases and becomes a drop). When these small water droplets are sprayed out, they become fog.
The second method uses the principle that the water is pressed into the thin tube to cause high-speed water flow, and the high-speed water flow hits the obstacle and then breaks into small water droplets.
The situation is like plugging the faucet with your fingers, and the sprayer for the home uses this structure because of the low cost.
The third is to let the water carry a charge (water is a dielectric), using the same kind of charge mutually exclusive to divide the water into droplets.
The fourth is the principle of ultrasonic atomization.
Vibration can cause "spray" on the surface of the water. The vibration frequency of the ultrasonic wave is very high, so its "wave" has a very small wavelength, so its "spray" - small water droplets are also small, and these small water droplets become fog.