JPH01139094U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the pump of the present invention in the suction process, Fig. 2 is a partial schematic diagram of the control circuit of the pump of the present invention, and Fig. 3 shows the voltage across the disc bending body and the inlet valve and In the waveform diagram showing the change in voltage across the outlet valve, E ₁ has a different scale from E ₂ and E ₃ , and Figure 4 is a data plot obtained from a pump in operation according to the present invention. This shows that the output capacity of the pump is a linear function of the number of pulses per pulse train, and Figure 5 also shows a data plot of an operating pump, and the output capacity is a function of the time interval between pulses (
Fig. 6 is also a data plot of an operating pump, showing that the output capacity is a function of the back pressure (mmH) that develops against the resistance to the outflow flow.
g), and FIG. 7 is an explanatory diagram of a preferred embodiment of the control circuit of the pump of the present invention. Explanation of symbols, 1: Oscillator, 12: Volume variable chamber,
23: disk bending body, 26: thin plate, 35: internal sleeve tube.

Claims (1)

[Claims for Utility Model Registration] 1. A pump device having an inlet and an outlet, a sealed variable volume chamber, an expandable tube connected to the inlet and the outlet and provided inside the variable volume chamber, and a pump device having an inlet and an outlet. piezoelectric effect means forming a part of a partition wall of a variable volume chamber and for changing the volume of the variable volume chamber; a substantially incompressible liquid provided in the chamber, a filling pipe connected to the variable volume chamber and capable of sealing after filling the variable volume chamber with the liquid in a deaerated state; solenoid valve means for controlling fluid flow conditions through the inlet and the outlet, and a desired chain of action for pumping fluid from the inlet to the telescoping tube and from the telescoping tube to the outlet; A pump device comprising a control means connected to the piezoelectric effect means and the electromagnetic valve means for electrically operating the piezoelectric effect means and the electromagnetic valve means to perform. 2. A pumping device according to paragraph 1 above, wherein the electromagnetic valve means includes biasing means for biasing the valve means to a closed position, stopping fluid flow through the pump when pumping is not performed. . 3. In the above item 1, the electromagnetic valve means includes a first electromagnetic valve and a second electromagnetic valve that are linked to the inlet and the outlet, respectively, and are alternately opened when operated by the control means. the second solenoid valve closes and the first solenoid valve opens to pump fluid into the telescoping tube; the first solenoid valve closes and the second solenoid valve opens to pump fluid into the telescoping tube; A pumping device from which fluid can be pumped. 4. In paragraph 1 above, the control means comprises an oscillator for providing an electrical output signal with a selectively determined frequency, a valve open state time adjustment means for controlling the operating time of the electromagnetic valve means, and the oscillator. a step-up transformer having a primary side that conducts current alternately in opposite directions in response to an output signal of the step-up transformer, and a secondary side connected to both ends of the piezoelectric effect means; a first switch means actuated by the output signal of said oscillator for supplying said oscillator; and second switch means for actuating said valve open time adjusting means in response to the frequency of said oscillator. A pump device wherein the volume of fluid supplied is a function of the adjustable duration of actuation of said solenoid valve means and the output frequency from an oscillator selectively determined. 5 oscillator means for providing an electrical signal output with a selectively determined frequency; valve open time adjustment means for controlling the duration of actuation of the at least one electromagnetic valve, the secondary having a piezoelectric effect; a step-up transformer connected across the means whose primary side conducts current alternately in opposite directions in response to said oscillator output signal; and a step-up transformer operated by said oscillator output signal to conduct current alternately in opposite directions to said primary side and second switch means for actuating said valve open time adjustment means in response to said oscillator frequency, the volume of fluid being pumped being adjusted by said solenoid valve means. A volume that is a function of the possible operating duration and a selectively determined oscillator output frequency and that has an inlet and an outlet driven by a piezoelectric effect and operated by a solenoid valve and that is sealed after filling with degassed liquid. Control circuit that controls the variable room.