An apparatus for cleaning a surface includes a body defining a cavity and terminating in a distal end that is adapted, in use, to be in the vicinity of a surface to be cleaned such that the surface forms an end wall of a chamber including the cavity; at least one cleaning liquid inlet for flow of a cleaning liquid into the chamber; a divider located in or at the end of the cavity that divides the chamber into first and second portions, the second portion, in use, being in fluid communication with the surface to be cleaned; and an acoustic transducer associated with the first portion to introduce acoustic energy into the chamber; wherein the divider is adapted to permit the passage of acoustic energy therethrough from the first portion to the second portion of the chamber to thereby allow pressure fluctuations to be generated at the surface.

The present invention discloses a robot that moves on a surface. The robot includes a casing, a moving unit coupled to the casing, and a suction disk coupled to the casing. The casing, the suction disk and the surface are configured to form an airtight space. The robot further includes an air extraction module and a spray module. The air extraction module is disposed in the casing and is in communication with the airtight space, and the air extraction module is configured to generate a negative pressure in the airtight space. The spray module is coupled to the casing and configured to spray a liquid onto the surface.

An ultrasonic cleaning apparatus with a cleaning reservoir having a plurality of chambers, which are selectably fillable with cleaning fluid. The chambers of the multi-chamber reservoir are fluidly interconnectable, the apparatus further comprising a fluid distribution pump and a controller for sequentially controlling a fluid flow between the chambers during an ultrasonic cleaning cycle. Such a multi-chamber reservoir has the advantage of reducing the total volume of fluid required to clean vessels in the reservoir, since the cleaning process can be performed in a staged or sequential procedure, and the cleaning and/or rinsing fluid reused in each chamber, allowing the apparatus to be more compact.

The present invention relates to a method of, and an apparatus for rinsing materialographic samples. The apparatus includes a sample holder configured to receive materialographic samples, a rotation head configured to rotate the sample holder and a vessel configured to receive the sample holder and a rinsing liquid. The apparatus also includes means for filling and emptying the vessel with rinsing liquid, means for applying ultrasound to the rinsing liquid and a control means. The control means is configured to control at least one of filling of the vessel with a rinsing liquid by injecting rinsing liquid through an inlet provided in the vessel to submerge the materialographic samples in the rinsing liquid, subjecting the rinsing liquid and the materialographic samples to ultrasound, or rotating the sample holder including the materialographic samples relative to the vessel.

An apparatus and method for cleaning a surface, the apparatus comprising: a body defining a cavity, the body terminating in a distal end that is adapted, in use, to be in the vicinity of a surface to be cleaned such that the surface to be cleaned forms an end wall of a chamber including the cavity; at least one cleaning liquid inlet for flow of a cleaning liquid into the chamber; a divider located in or at the end of the cavity that divides the chamber into a first portion and a second portion, the second portion, in use, being in fluid communication with the surface to be cleaned; and an acoustic transducer associated with the first portion of the chamber to introduce acoustic energy into the chamber; wherein the divider is adapted to permit the passage of acoustic energy therethrough from the first portion of the chamber to the second portion of the chamber to thereby allow pressure fluctuations to be generated at the surface to be cleaned.

The present invention relates to a method of, and an apparatus for, rinsing materialographic samples. The method includes the steps of: arranging one or more materialographic samples in a sample holder; connecting the sample holder (10) to a rotation head of a rinsing device; placing the sample holder connected to the rotation head in the vessel of the rinsing device; rotating the sample holder relative to the vessel; filling the vessel with a rinsing liquid; and subjecting the materialographic samples in the sample holder to ultrasonic waves.

Proposed is ultrasonic spoon washing apparatus and method, which use ultrasonic waves generated by one or more ultrasonic oscillators provided on a vertical side wall of polygonal surfaces of a wash tub, so that spoons contained in a spoon support part rotating forward/in reverse may very efficiently and conveniently be washed while the number of revolutions changes for each washing stage, the apparatus including: a frame body; the wash tub mounted inside the frame body; one or more ultrasonic oscillators provided on an outer side of the vertical side wall; a forward/reverse rotation support part including a support shaft and a rotation support pipe; a spoon support part including a holder and a spoon accommodation container; a rinsing water supply part configured to spray the rinsing water together with a rinsing aid; and a wastewater and foreign material discharge part configured to discharge, to the outside, wastewater and foreign materials.

The present invention discloses a robot that moves on a surface. The robot includes a casing, a moving unit coupled to the casing, and a suction disk coupled to the casing. The casing, the suction disk and the surface are configured to form an airtight space. The robot further includes an air extraction module and a spray module. The air extraction module is disposed in the casing and is in communication with the airtight space, and the air extraction module is configured to generate a negative pressure in the airtight space. The spray module is coupled to the casing and configured to spray a liquid onto the surface.

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.

The present invention relates to a method of, and an apparatus for rinsing materialographic samples. The apparatus includes a sample holder configured to receive materialographic samples, a rotation head configured to rotate the sample holder and a vessel configured to receive the sample holder and a rinsing liquid. The apparatus also includes means for filling and emptying the vessel with rinsing liquid, means for applying ultrasound to the rinsing liquid and a control means. The control means is configured to control at least one of filling of the vessel with a rinsing liquid by injecting rinsing liquid through an inlet provided in the vessel to submerge the materialographic samples in the rinsing liquid, subjecting the rinsing liquid and the materialographic samples to ultrasound, or rotating the sample holder including the materialographic samples relative to the vessel.