PURPOSE: To improve the pump performance, by connecting a reserve tank having an upper space to a suction port of a check valve on the suction side of a pump designed to suck a liquid by vibrating a piezoelectric vibrator.
CONSTITUTION: A casing is provided with a suction pipe 9 and a discharge pipe 10 on one side of a piezoelectric vibrator 2. The suction pipe 9 and the discharge pipe 10 are provided with a check valve 5 on the suction side and a check valve 6 on the discharge side, respectively. A reserve tank 8 having an upper space 7 is connected near a suction port of the check valve 5 on the suction side. With this arrangement, the operation of the check valve 5 may be improved, and a discharge amount may be increased, thus improving the pump performance.
ASAKURA SHINICHI
SHIZURI MASANORI
JPS6036792A | 1985-02-25 |