The description relates to methods and apparatus that enable the efficient introduction of gases like air, oxygen and ozone into aqueous liquids. Gases are introduced into liquids for making that gas chemically or biologically available at a minimum energy expenditure. Impinging jets of liquid are directed into a pressurized saturation vessel having a gas-filled headspace and a saturation zone below the surface of the liquid at a velocity sufficient to create a turbulent impact and plunge zone. The resulting turbulence and mixing of gas and liquid in that zone under pressure, causes the gas to be driven into the liquid in the vessel and breaks up the gas and the liquid into a churning flow and creates a large number of bubbles. The resulting gas-enriched liquid is discharged from the vessel at an outlet to ensure a minimum of bubbles in the gas-enriched liquid.

An apparatus and system for managing the level of dissolved gases in water for aquatic life that provides sufficient water with sufficient oxygen saturation, without introducing excessive amounts of bubbles, and that can adequately degas or strip harmful dissolve gases from the water. The apparatus can generally comprise a storage compartment, a filter compartment, and a pump compartment. The filter compartment can be coupled with the storage compartment and comprise a filter element. The pump compartment can be coupled with the storage compartment and comprise a venturi air intake port, a degassing vent, a pump filter element, and a pump assembly. The pump assembly can comprise a venturi nozzle coupled with the venturi air intake port and a flow pump in fluid communication with a flow pump intake port. The pump filter element can at least partially encircle the flow pump intake port.

A micro bubble generating device disposed at one end of a liquid supply device including a water inlet unit, a water outlet unit, an air inlet groove, and a first sleeve. The water inlet unit is penetrated by first passages, and one side being penetrated is provided with a first connecting surface; the water outlet unit is penetrated by second passages, and one side being penetrated is provided with a second connecting surface. The second connecting surface faces the first connecting surface, and they partially abut against each other to form the air inlet groove. The air inlet groove comprises a third passage and a first accommodating chamber. The first accommodating chamber has a first spacing, the first spacing is different from a second spacing of the third passage. The first sleeve is disposed at another side of the water outlet unit.

A device for pouring a liquid coming from a container provided with a neck includes a housing provided with a system for securing to the container; a tube that is able to inserted into the neck, this tube defining a pouring duct; a pump including: a compressor provided with at least one air inlet, with an air outlet and with a mobile assembly that is able to bring the air inlet and the air outlet into fluidic communication, and an electric motor coupled to the mobile assembly; an injector which is connected to the air outlet of the compressor by way of an upstream end and opens into the centre of the pouring duct by way of a downstream end.

A method is provided for producing fine-bubble water by resonance foaming and vacuum cavitation, and a device for manufacturing each of ultra-fine-bubble water of hydrogen gas having a reducing radical function, ultra-fine-bubble water of air and oxygen gas having an oxidizing radical function, ozone ultra-fine-bubble water having a sterilization function enabled by ozone, and fine-bubble water of nitrogen/carbon dioxide gas for increasing the ability to preserve the freshness of raw agricultural products, livestock products, and marine products.

Disclosed is a washing machine including: a tub provided inside a cabinet and storing washing water; a drum rotatably provided inside the tub and accommodating an object to be washed; a circulation pump for circulating, inside the drum, the washing water discharged from the drum; an air pump for compressing air; an air mixer for mixing the washing water supplied by the circulation pump, and the air compressed by the air pump; and a plurality of nozzles for spraying, toward the object to be washed, a mixed fluid in which the washing water and the compressed air are mixed by the air mixer.

Provided are: a microbubble generation device utilizing a swirling flow generated by injecting of a pressurized liquid; a microbubble generation method capable of generating a large amount of bubbles; and a shower apparatus and an oil-water separation apparatus having said microbubble generation device. This microbubble generation device comprises: a cylindrical or conical cylinder with a gas-liquid swirling chamber therein; a gas-liquid discharge inlet provided on one end of the cylindrical or conical cylinder; and a liquid supply cylinder and a gas supply cylinder for introducing a liquid and a gas into the gas-liquid swirling chamber. For the gas-liquid discharge outlet, a plurality of small cylindrical through-holes or a plurality of small recessed parts with a circular cross-section and at least a semicircular circumferential length, are respectively provided in the wall of a closed end at one end of the cylindrical or conical cylinder or on the circumferential surface of the inner wall of an open end at one end thereof.

A beverage aerator includes a housing, a pump-motor assembly, an uptake tube, and a spray nozzle. The housing is sized to removably seat on a neck of a decanting vessel. The pump-motor assembly is positioned within the housing, and has a pump inlet and a pump outlet. The uptake tube is fluidly coupled to the pump inlet upstream of the pump inlet. The uptake tube has a tube inlet end located below the housing. The spray nozzle is fluidly coupled to the pump outlet downstream of the pump outlet. The spray nozzle is located below the pump-motor assembly and oriented to have a laterally-outward discharge direction.

An aerator and an associated method and system are provided. The aerator includes an elongate body having a central bore that extends between proximal and distal ends of the body, and a plurality of channels formed in an outer surface of the body, the plurality of channels extending between the proximal and distal ends, and including at least two bends along their lengths. The bends in the channels help to provide a smoother flow of liquids passing through the aerator.

A resin composition preparation apparatus and a polyurea resin are provided. A resin introduction unit is configured to inject a composition solution and air mixed in the composition solution. An air bubble generator is connected to the resin introduction unit. An air bubble separation tank is connected to the air bubble generator. The air bubble generator comprises: an inlet through which the composition solution and the air are introduced from the resin introduction unit; an outlet through which the resin composition is discharged to the air bubble separation tank; and an internal flow channel connecting the inlet and the outlet so as to pass therethrough. The internal flow channel comprises a groove portion configured to form the air bubbles having a smaller particle size than that of the air.