Micro pump powered by piezoelectric disk benders
First Claim
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1. A pump having an inlet and an outlet comprising:
- a variable volume chamber having a single port and at least one piezeoelectric wall;
a single solenoid valve for controlling the communication of said port to said inlet and outlet;
a signal generator; and
a transformer having said solenoid valve and said signal generator connected in series on one side of the transformer and said piezeoelectric wall connected to the other side of the transformer;
the sequentral operation of said solenoid valve and said piezoelectric wall needed to produce a pumping effect being produced by the electrical characteristics of the transformer, solenoid valve and piezeoelectric wall.
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Abstract
The pump has a piezoelectric variable volume chamber and a solenoid controlled valve operated in sequence to pump small volumes of liquid. The sequence is produced by developing a phase difference between the control of the piezoelectrical chamber and the solenoid valve.
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Citations
11 Claims
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1. A pump having an inlet and an outlet comprising:
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a variable volume chamber having a single port and at least one piezeoelectric wall; a single solenoid valve for controlling the communication of said port to said inlet and outlet; a signal generator; and a transformer having said solenoid valve and said signal generator connected in series on one side of the transformer and said piezeoelectric wall connected to the other side of the transformer; the sequentral operation of said solenoid valve and said piezoelectric wall needed to produce a pumping effect being produced by the electrical characteristics of the transformer, solenoid valve and piezeoelectric wall. - View Dependent Claims (2, 3, 4)
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5. A pump having an inlet and an outlet comprising:
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a chamber means for holding a medium being pumped and having a port; a piezoelectric means connected to said chamber means for varying the volume of said chamber means; a solenoid valve connected between said inlet, said outlet and said port for controlling the communication of said port with said inlet and said outlet; and control means connected to said piezoelectric means and said solenoid valve for electrically activating said piezoelectric means and said solenoid valve in a desired sequence to move said medium from said inlet to said chamber means and from said chamber means to said outlet, past said solenoid valve. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification