LIQUID DISPENSING APPARATUS BASED ON PIEZOELECTRICALLY DRIVEN HOLLOW HORN
First Claim
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1. A liquid dispensing apparatus comprising:
- (a) a hollow horn having a central cavity;
(b) a vibration generator having a central opening, said vibration generator being coupled to said hollow horn such that said central opening is in communication with one end of said central cavity of said hollow horn;
(c) a mesh screen covering another end of said central cavity of said hollow horn, having an inner surface facing towards said central cavity and an outer surface; and
(d) a liquid connector for delivering liquid to said inner surface of said mesh screen from a liquid storage.
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Abstract
A liquid dispensing apparatus, including a hollow horn having a central cylindrical cavity and a piezoelectric ring having a central opening. The piezoelectric ring is coupled to the hollow horn such that the central opening is in communication with one end of the central cylindrical cavity. A mesh screen is provided at the other end of the central cylindrical cavity. Liquid is delivered to an inner surface of the mesh screen through the central opening of the piezoelectric ring and the central cylindrical cavity of the hollow horn, and is dispensed from an outer surface of the mesh screen in the form of fine liquid droplets.
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Citations
19 Claims
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1. A liquid dispensing apparatus comprising:
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(a) a hollow horn having a central cavity; (b) a vibration generator having a central opening, said vibration generator being coupled to said hollow horn such that said central opening is in communication with one end of said central cavity of said hollow horn; (c) a mesh screen covering another end of said central cavity of said hollow horn, having an inner surface facing towards said central cavity and an outer surface; and (d) a liquid connector for delivering liquid to said inner surface of said mesh screen from a liquid storage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of dispensing liquid in the form of fine liquid droplets comprising the steps of:
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(a) providing a hollow horn having a central cylindrical cavity; (b) providing a piezoelectric ring having a central opening, said piezoelectric ring being coupled to said hollow horn such that said central opening is in communication with one end of said central cylindrical cavity; (c) providing a mesh screen at the other end of said central cylindrical cavity; (d) applying voltage of a predetermined frequency to said piezoelectric ring to drive said hollow horn and said mesh screen into vibration; and (e) delivering liquid to an inner surface of said mesh screen through said central opening of said piezoelectric ring and said central cylindrical cavity of said hollow horn so that the liquid is dispensed from an outer surface of said mesh screen in the form of fine liquid droplets. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification