High flow piezoelectric pump

High flow piezoelectric pump

  • CN 101,608,611 B
  • Filed: 06/15/2009
  • Issued: 03/26/2014
  • Est. Priority Date: 06/16/2008
  • Status: Active Grant
First Claim
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1. for a piezoelectric pump for pumping fluid, described pump comprises:

  • Housing;

    Be positioned at the actuator of housing, the voltage that is wherein applied to actuator impels actuator to apply active force;

    Primary diaphragm near described actuator;

    Be positioned at the piston assembly of housing, described piston assembly is removable between at least one primary importance and a second place, and described piston assembly comprises piston, secondary diaphragm and tertiary membrane sheet;

    The first-class body cavity of the sealing being limited by the secondary diaphragm of described housing, primary diaphragm and piston assembly;

    Be positioned at first-class body cavity for primary diaphragm being connected to the connection fluid of piston assembly;

    The second body cavity being limited by the tertiary membrane sheet of described housing and piston assembly;

    The inlet valve being communicated with second body cavity;

    The outlet valve being communicated with second body cavity;

    The surface area of wherein said primary diaphragm is greater than the surface area of secondary diaphragm, and the surface area of tertiary membrane sheet is greater than the surface area of primary diaphragm;

    Wherein, the active force being applied by described actuator makes primary diaphragm displacement, force connection fluid that piston assembly is moved to the described second place from described primary importance, and the mobile volume that change second body cavity of piston assembly between primary importance and the second place, thereby make fluid by inlet valve, enter second body cavity and discharge from second body cavity by outlet valve;

    Wherein said first-class body cavity is with the eck part along rectilinear axis, described eck partly has the sectional area dwindling, make connection fluid in first-class body cavity because the displacement of primary diaphragm is forced into eck part, thereby amplify piston assembly along the displacement of rectilinear axis.

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