Provided is an automated analyzer comprising an ultrasonic cleaner capable of obtaining a consistent cleaning effect regardless of the operating temperature environment. This automated analyzer comprises: a dispensing mechanism having a nozzle for dispensing a sample or reagent; an ultrasonic cleaner 26 for cleaning the nozzle; and a control unit 28. The ultrasonic cleaner comprises: a cleaning tank 206; an ultrasonic vibrator 205; and a vibration head 209 that extends from the ultrasonic vibrator to the cleaning tank and has a distal end part that is inserted into the cleaning tank. The control unit inserts the nozzle into the cleaning tank and carries out a heating operation for heating the ultrasonic vibrator by driving the ultrasonic vibrator according to a driving condition different from that for a cleaning operation for cleaning the nozzle by driving the ultrasonic vibrator.

In a deburring device configured to remove burrs of the molded product through radiation of ultrasonic waves, a height of the storage tank is set to 1.25 mm when a wavelength of an ultrasonic wave is set to mm. A frequency range of ultrasonic wave radiating means arranged on a bottom side of the washing water storage tank is set to from 18 KHz to 28 KHz, and power density is set to 2 W/cm.sup.2 or higher. Further, there is arranged oscillating means configured to allow the molded product immersed in the washing water to vertically move with a stroke of at least 1/2 mm in a vertical direction. Further, an amount of dissolved oxygen in the washing water is set to 1 mg/litter or less, and a water temperature of the deburring washing water is set to from 4 C. to 8 C.

An ultrasonic cleaner is provided. The ultrasonic cleaner includes: a first ultrasonic vibrator configured to generate a first ultrasonic wave; a first oscillator configured to drive the first ultrasonic vibrator; a wash tank configured to store a detergent solution; and an attenuation mechanism configured to damp vibration of the wash tank. The wash tank includes a parabolic surface which is a recessed surface facing a vibration surface of the first ultrasonic vibrator, and is configured to reflect the first ultrasonic wave to a focal position where an object to be cleaned is placed. The vibration of the wash tank is generated by the first ultrasonic wave impinging on the wash tank.

The ultrasonic-wave irradiation unit provides excellent erosion resistance, ensuring a long service life, and achieves uniform oscillation displacement distribution, thereby minimizing uneven cleaning. The ultrasonic-wave irradiation unit comprises a diaphragm and a plurality of transducer units U1. Each transducer unit U1 includes a plurality of ultrasonic transducers, a resonator, and a connecting plate that transmits the oscillations of the ultrasonic transducers to the resonator. The connecting plate 61 has peaks and valleys along both side edges, forming alternating wide portions and narrow portions, with bolt insertion holes formed in the center of each wide portion. Adjacent connecting plates are arranged in a staggered manner in close proximity, such that the peaks of one plate fit into the valleys of the adjacent plate. The ultrasonic transducers and resonators are fastened and fixed to a plurality of bolts protruding through the bolt insertion holes of the connecting plate.

The present invention provides an ultrasonic washer that radiates ultrasonic waves from a plurality of vibration surfaces, radiates ultrasonic waves at the same phase, effectively generates cavitation around a nozzle through ultrasonic vibration, and has a high washing effect. The ultrasonic washer of the present invention is characterized by having: a washing tank in which is washed a nozzle that suctions a sample or reagent; and an ultrasonic vibrator having a piezoelectric element sandwiched between a front mass and a back mass, wherein a diaphragm between opposing upper and lower plates is formed at a leading end of the front mass installed at a leading end of the ultrasonic vibrator, and the nozzle is ultrasonically washed in a region between the upper plate and the lower plate.

A laundry appliance includes a drum that rotationally operates within a tub. A fluid delivery system selectively delivers wash fluid to the drum. A rotator rotationally operates within the drum. The rotator selectively operates independent of the drum and about a common rotational axis of the drum and the rotator. A sanitizing mechanism includes an ultrasonic transducer. The ultrasonic transducer selectively delivers waves of an ultrasonic frequency into an amount of the wash fluid disposed within the drum and the rotator. The ultrasonic frequency generates air bubbles and causes cavitation of the air bubbles that directs a micro jet of air through the wash fluid and into articles being processed within the drum.

A treatment method and system using high-frequency ultrasound for treating a waste stream containing per- and polyfluoroalkyl substance (PFAS) is disclosed. The system has one or more reactors including one or more transducers configured to operating at one or more frequencies to destroy or mineralize the per- and polyfluoroalkyl substances (PFAS) in the waste stream using sonolysis.

A system comprises a support, typically part of dishwashing machine or clothes washing machine, having a plurality of piezoelectric transducers. Each transducer can have a cylindrical housing with a water inlet along a side surface of the housing. The transducers can also comprise a lens and a piezoelectric material with electrodes configured to couple to a power supply.

A wafer cleaning apparatus according to the present disclosure includes a rotary table that supports and rotates a wafer so that the wafer rotates about a rotational axis, and an ultrasonic vibration device that vibrates a liquid film so that vibration having an ultrasonic frequency is generated in the liquid film formed on an upper surface of the wafer.

A system comprises a support, typically part of dishwashing machine or clothes washing machine, having a plurality of piezoelectric transducers. Each transducer can have a cylindrical housing with a water inlet along a side surface of the housing. The transducers can also comprise a lens and a piezoelectric material with electrodes configured to couple to a power supply.