Abstract
The pump performance and the pressure pulsation of the portable power sprayer are measured.
This sprayer has one cylinder and is driven by a two cycle engine. It has not air chamber and pressure regulator, but has variable volume piston, buffer piston and safety valve.
As the variable volume piston regulates the suction volume, the power requirement gradually decreases over the discharge pressure of about 20kg/cm2. As the buffer piston restrains the discharge pressure pulsation, the pressure pulsation is comparatively small at the spraying pressure of 10-20kg/cm2. The discharge pressure does not exceed over about 30kg/cm2 by the safety valve.
Therefore, this sprayer can be used without the pressure regulation at the discharge pressure range of 10-20kg/cm2.
