PIEZOELECTRIC PUMP AND INK JET APPARATUS HAVING THE SAME

摘要

A piezoelectric pump includes a housing, a first valve member, and a second valve member. The housing includes an inlet, a first chamber, a second chamber having a wall made of piezoelectric material, a third chamber, and an outlet connected in this order. The first valve member is disposed entirely within the first chamber and movable between a first position at which the first valve member is disposed entirely within the first chamber and fluid in the inlet flows into the first chamber, and a second position at which the first valve member is disposed entirely within the first chamber and the fluid in the inlet is prevented from flowing into the first chamber. The second valve member is disposed similarly to the first valve member.

主权项

1. A piezoelectric pump comprising:
a housing including an inlet, a first chamber connected to the inlet, a second chamber enclosed by a wall made of piezoelectric material and connected to the first chamber, a third chamber connected to the second chamber, and an outlet connected to the third chamber; a first valve member disposed entirely within the first chamber and movable between a first position at which the first valve member is disposed entirely within the first chamber and fluid in the inlet flows into the first chamber, and a second position at which the first valve member is disposed entirely within the first chamber and the fluid in the inlet is prevented from flowing into the first chamber; and a second valve member disposed entirely within the third chamber and movable between a third position at which the second valve member is disposed entirely within the third chamber and fluid in the second chamber flows into the third chamber through the outlet, and a fourth position at which the second valve member is disposed entirely within the third chamber and the fluid in the second chamber is prevented from flowing into the third chamber through the outlet.