Gas and liquid contact apparatus – Fluid distribution – Pumping
Patent
1983-12-09
1985-04-23
Miles, Tim
Gas and liquid contact apparatus
Fluid distribution
Pumping
261104, 261DIG65, 261 81, 239326, B01F 304
Patent
active
045129339
ABSTRACT:
An apparatus is provided for dispensing volatile substances which includes a housing, and at least one piezoelectric blower. Each blower includes a piezoelectric element having a first end mounted to the housing and a second end free, and a generally planar impeller blade connected to the free end of the piezoelectric element and having its distal end unconstrained by the housing. A frame is attached to, or provided as an integral part of, the housing and is located in proximity to the distal end of the blade. The frame is adapted to detachably mount a replaceable substrate cartridge containing a volatile substance. In use, a voltage is applied to the piezoelectric element for oscillating its free end perpendicular to its plane at or close to resonance and propagating a traveling wave along each blade to generate and shed vortices at the distal end of the blade which contact the substrate cartridge, thereby dispensing the volatile substance to the surrounding atmosphere.
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Piezo Electric Products, Inc., Piezoelectric Quadrature Fan brochure and accompanying data sheets and price list, including data sheets QFA, QFB, QFC, and QFX, 186 Massachusetts Ave., Cambridge, MA 02139, Jul. 21, 1983.
Ingerman Jeffrey H.
Miles Tim
Takasago USA, Inc.
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