Ultrasonic liquid atomizer, particularly for high volume flow rates

An ultrasonic liquid atomizer tip for providing an atomized spray of liquid comprising a circular atomizing surface, a plurality of orifices in the atomizing surface through which liquid is delivered to the atomizing surface, a lip disposed about and extending from the complete circular periphery of the atomizing surface for preventing liquid from leaving the atomizing surface in substantially transverse directions, and a liquid impervious barrier of predetermined area disposed to be operative adjacent to and spaced from the atomizing surface for preventing at least unatomized liquid from leaving the atomizer tip through the predetermined area of the barrier adjacent the tip.

A front section of an ultrasonic liquid atomizer comprising a larger section, a stepped, smaller section coupled to the larger section and an enlarged tip coupled to the stepped section, the enlarged tip including an atomizing surface thereon, a plurality of orifices disposed in the atomizing surface through which liquid is delivered to the atomizing surface and a corresponding plurality of individual liquid feed passages axially extending in the stepped section each in communication with a respective orifice, a common liquid feed passage in the larger section which communicates with all of the individual passages, and a baffle disposed adjacent to and spaced from the atomizing surface for preventing unatomized liquid from leaving the atomizer tip through a surface of predetermined area adjacent the tip and entering an atomized spray produced by the front section.

A front section for an ultrasonic liquid atomizer comprising a larger generally tubular section, a stepped, smaller generally tubular section coupled to the larger section and an enlarged disc-shaped tip coupled to the stepped section, the enlarged tip including an atomizing surface thereon, a plurality of orifices in the atomizing surface through which liquid is delivered to the atomizing surface and a corresponding plurality of individual liquid feed passages axially extending through the stepped section, each in communication with a respective orifice, a common liquid feed passge in the larger section which communicates with all of the individual feed passages, a baffle disposed adjacent to and spaced from the atomizing surface, and having a flat surface of predetermined area facing and substantially parallel to the atomizing surface, for preventing unatomized liquid from leaving the atomizing tip and entering the atomized spray through said surface of predetermined area adjacent the tip, and a lip disposed completely about and extending from the periphery of the disc-shaped tip for preventing liquid from leaving the atomizing surface in substantially transverse directions.

An ultrasonic liquid atomizer comprising a front section, a rear section and driving means disposed between the two sections for imparting ultrasonic vibrations to the front section, the front section comprising a larger generally tubular section, a stepped, generally tubular smaller section coupled to the larger section and an enlarged tip coupled to the stepped section, the enlarged tip including an atomizing surface thereon, a plurality of orifices in the atomizing surface through which liquid is delivered to the atomizing surface, a corresponding plurality of individual liquid feed passages axially extending through the stepped section each in communication with a respective orifice, a common liquid feed passage in the larger section which communicates with all of the individual passages, and a baffle disposed to be operative adjacent to that portion of the atomizing surface in which the orifices are disposed and spaced from the atomizing surface, and having a flat surface of predetermined area facing and substantially parallel to the atomizing surface, for preventing unatomized liquid from leaving the atomizer tip through a surface of predetermined area adjacent the tip and entering an atomized spray produced by the front section.