Ultrasonic atomization apparatus
In an ultrasonic atomization apparatus of the present invention, a separator cup and four ultrasonic vibrators are provided to satisfy a reflected wave avoidance condition that “four reflected waves are not received by any of the four ultrasonic vibrators”. Specifically, a set curvature of a bottom surface of the separator cup is set to be larger than a conventional set curvature. In addition, a distance from a center point of a bottom surface of the water tank of each of the four ultrasonic vibrators is set to be longer than a conventional distance.
1. An ultrasonic atomization apparatus comprising:
a container including a separator cup configured to accommodate a source solution at a lower part;
an internal hollow structure body including a hollow inside being provided above said separator cup in said container;
a water tank configured to accommodate an ultrasonic wave conveyance medium inside, said water tank and said separator cup being positioned so that a bottom surface of said separator cup is immersed in said ultrasonic wave conveyance medium; and
a plurality of ultrasonic vibrators provided in a bottom surface of said water tank, wherein
when a part of a plurality of incident waves transmitted from said plurality of ultrasonic vibrators is reflected on said bottom surface of said separator cup, a plurality of bottom surface-reflected waves is obtained,
said separator cup and said plurality of ultrasonic vibrators are provided to satisfy a reflected wave avoidance condition,
said reflected wave avoidance condition is a condition that “said plurality of bottom surface-reflected waves is not received by any of said plurality of ultrasonic vibrators”,
said bottom surface of said separator cup is formed into a spherical surface shape with a center projecting downward,
said plurality of ultrasonic vibrators are disposed to be separated apart from each other so as to have a same distance from a reference point of said bottom surface of said water tank,
said bottom surface of said water tank includes a plurality of reflected wave reception regions configured to receive said plurality of bottom surface-reflected waves,
said ultrasonic atomization apparatus further comprises a plurality of ultrasonic wave absorption members embedded in recess portions in said plurality of reflected wave reception regions,
a constituent material of each of said plurality of ultrasonic wave absorption members is a rubber material, and
said plurality of reflected wave reception regions are different from the regions where said plurality of ultrasonic vibrators are provided.
2. The ultrasonic atomization apparatus according to claim 1 , wherein a constituent material of said bottom surface of said separator cup is fluorocarbon resin.