Liquid atomizer
AssigneeHitachi, Ltd.
InventorsToshiharu Nogi, Teruo Yamauchi, Yoshishige Oyama
Life of this patent
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Abstract
A liquid atomizer utilizes a plurality of laminated piezoelectric elements for converting electrical oscillation into mechanical vibration, a circuit for generating resonance frequency of a low DC voltage, the circuit being electrically connected to the piezoelectric elements and including a charging circuit for forcibly causing electric charge based on said DC resonance frequency voltage to flow from a DC power source into the laminated piezoelectric elements and a discharge circuit for forcibly causing electric charge stored in the laminated piezoelectric elements to be discharged.
Claims10
A liquid atomizer which imparts vibration energy to
- a liquid to atomize the liquid, said atomizer comprising:
- transducer means having a plurality of laminated piezoelectric elements for converting electrical oscillation into mechanical vibration;
- vibrating means connected to said transducer means and vibrating to impart vibration energy to the liquid thereby to atomize the liquid;
- and
- electrical oscillation generating means for generating resonance frequency of low DC voltage applied on said transducer means, said electrical oscillation generating means including a charging circuit for forcibly causing electric charge based on said DC resonance frequency voltage to flow from a DC power source into said laminated piezoelectric elements and a discharge circuit for forcibly causing electric charge stored in said laminated piezoelectric elements to be discharged.
A liquid atomizer comprising:
- at least one transducer having a plurality of laminated piezoelectric elements for converting electrical oscillation into mechanical vibration;
- a tubular member connected to said transducer so that said member is caused to vibrate by said transducer, said tubular member being disposed in air including a liquid to atomize the liquid by mechanical vibration of said tubular member excited by said transducer;
- and
- a circuit for generating resonance frequency of a low DC voltage, said circuit electrically connected to said transducer and including a charging circuit for forcibly causing electric charge based on said DC resonance frequency voltage to flow from a DC power source into said laminated piezoelectric elements and a discharge circuit for forcibly causing electric charge stored in said laminated piezoelectric elements to be discharged.
An atomized fuel supplying apparatus comprising:
- an intake passage leading air to an internal combustion engine;
- a fuel supplying means disposed midway of said intake passage for supplying fuel into the air flowing therein;
- a tubular member provided in said intake passage around said fuel supplying means;
- at least one transducer having a plurality of laminated piezoelectric elements for converting electrical oscillation into mechanical vibration, said tubular member connected to said transducer;
- and
- a DC resonance frequency voltage generating circuit including a charging circuit for forcibly causing electric charge based on said DC resonance frequency voltage to flow from a DC power source into said laminated piezoelectric elements and a discharge circuit for forcibly causing electric charge stored in said laminated piezoelectric elements to be discharged, whereby the fuel is atomized by vibration of said tubular member caused by said transducer.
Dependencies are inferred from the claim text.