PROBLEM TO BE SOLVED: To provide an ultrasonic atomizer which has better liquid atomization performance, and which is more compact and is capable of efficiently atomizing liquid with less power consumption.SOLUTION: The present invention is an ultrasonic atomizer that applies ultrasonic vibration to liquid in a container 1, thereby forming a liquid ridge part and/or a spray part on a liquid surface and atomizing the liquid. The ultrasonic atomizer is characterized in that a recessed part 2 is provided in the bottom part of the container 1, an ultrasonic vibrator 3 is arranged in the base of the recessed part 2, a metal washer-shaped member 4 having an aperture or a container base plate having an aperture at the center of the recessed part 2 is arranged covering the recessed part 2, and a porous plate 6 in which numerous minute through-holes are formed and arrangement means for arranging the porous plate 6 in a prescribed position are provided, in which the porous plate 6 is attached to the arrangement means via an elastic retaining member 7, and, by this arrangement means the porous plate 6 is arranged in a position such that the lower surface of the porous plate 6 makes contact with the liquid ridge part and/or the spray part formed when the ultrasonic vibration is occurring.COPYRIGHT: (C)2015,JPO&INPIT【課題】液体の霧化性能をさらに向上させ、より小型で小さい消費電力で効率的に液体を霧化することのできる超音波霧化装置を提供する。【解決手段】容器1内の液体に超音波振動を与えて液面に液隆起部及び/又は飛沫部を形成させ液体を霧化する超音波霧化装置において、前記容器1の底部に更にくぼみ部2を設け、該くぼみ部2の底に超音波振動子3を設置し、該くぼみ部2を覆う状態でその中心に開口部を有する座金状部材4又は開口部を有する容器底板を配置するとともに、微小な貫通孔が多数形成された多孔板6とこの多孔板6を所定位置に配設するための配設手段とを備え、前記多孔板6は弾性保持部材7を介して前記配設手段に取り付けられ、この配設手段によって前記多孔板6がその下面が超音波振動の作動時に形成される液隆起部及び/又は飛沫部に接触する位置に配設されたことを特徴とする超音波霧化装置である。【選択図】図1
