A water spraying assembly is provided which includes a fluid conduit, a vortex chamber and a nozzle. The nozzle has a constricted section which forms a low pressure venturi when water passes through the constricted section. Further, the nozzle has one or more holes which project through the nozzle's sidewall at the venturi to aspirate air into the nozzle. The vortex chamber is between the fluid conduit and the nozzle. The vortex chamber rotates the flow of water around the showerhead's longitudinal axis before the water enters the nozzle's venturi. This causes the water to swirl within the venturi's low-pressure zone to increase the venturi effect of aspirating air into water within the showerhead's nozzle.

A shower head to jet an air bubble-liquid mixture by mixing air bubbles into the liquid includes a shower nozzle, a flow-adjustment piece, and air introduction passages. The shower nozzle includes an air bubble mixing space. The flow-adjustment piece is arranged in the air bubble mixing space. The air introduction passages cause air to flow into the air bubble mixing space therethrough.

A portable heated mist inhaler has a body, a supply tank of liquid, an atomizer for atomizing the liquid, and a thermostatically controlled heated nozzle. The supply tank feeds liquid to the atomizer. The atomizer creates a stream of mist from the liquid and entrained surrounding air. The mist is heated inside the nozzle so that it will be comfortable for the user. The portable heated mist inhaler has a battery which powers the atomizer and the heated nozzle.

A liquid saving device includes a liquid guide and a vortex adaptor. The liquid guide includes a primary recess, an indentation, and a plurality of primary pores. The vortex adaptor includes at least one air inlet structure, a trench, a gap and a center through hole. The plurality of primary pores is coupled to the indentation for receiving a first liquid stream to generate a same plurality of second liquid streams at respective ends. At least part of the plurality of primary pores have different lengths. A primary pore has a shorter length if the first primary pore outputs its corresponding second liquid stream with a larger deflection, and vice versa. The trench receives both at least one secondary liquid stream and air to generate a first aerated vortex. An elevated flow of the first aerated vortex with a spray-form liquid stream to generate a second aerated vortex.

The injection system includes a Resonance Enhanced Microjet nozzle assembly. The assembly includes plates including top and bottom plates, a first inlet in the top plate and coupled to steady jet. The bottom plate includes a hollow cavity having a bottom surface. A tube within the bottom plate forms a first outlet that exits a supersonic pulsed actuation jet in the range of kHz from the bottom plate. A second outlet is in the bottom plate and positioned concentric about the tube to form a circular slit. The circular slit is directly coupled to the bottom surface of the cavity. A second inlet via a conduit is coupled to a secondary fluid stream and the cavity. The system significantly improves the mixing of an actuation jet with the steady stream injected up to 115% in comparison to a system that uses a steady actuation jet under same operating pressure.

An all-plastic external foam pump, including an actuator, a fixing member, a plunger, an elastic member, a cylinder body, and a straw, is provided. One end of the fixing member is fixed or detachably connected to the actuator, and the other end is fixed or detachably connected to the plunger. The fixing member is at least partially accommodated in the cylinder body. One end of the plunger is penetrated into the elastic member. The straw is installed on one end of the cylinder body. A pulling rod is disposed in the plunger. The pulling rod is disposed in linkage with the plunger. The elastic member is made of a recyclable elastic material. A liquid mixing portion is disposed in the fixing member.

An atomizer includes a gas supply member provided with a gas supply port configured to supply a gas and a liquid supply member provided with a liquid supply port configured to supply a liquid. The gas supply member has a gas supply surface as a surface to form the gas supply port, the liquid supply port is opened toward an axis orthogonal to the gas supply surface at the gas supply port, and the liquid supply member has a first inclined surface between the liquid supply port and the gas supply port. The first inclined surface is inclined to leave from an axis orthogonal to the gas supply port as the first inclined surface extends away from the gas supply surface in a first section including a gas flow path and a liquid flow path.

A bubble water generating device, including: a flow divider, a mixer, an air intake runner, and a water outlet cover the flow divider includes at least one first water inlet hole; a first chamber is formed between the mixer and the flow divider; the mixer includes at least one second water inlet hole corresponding to the at least one first water inlet hole one by one, and at least one return hole; the flow area of each second water inlet hole is greater than that of the corresponding first water inlet hole, the return hole, the first water inlet hole and the second water inlet hole are all communicated with the first chamber; the air intake runner is communicated with the first chamber; a second chamber communicating with the second water inlet hole and the return hole is formed between the water outlet cover and the mixer.

Disclosed is a system to generate bubbles. The bubbles may be formed to include a substantially or medically pure gas. The bubbles may be formed on demand and in a selected small size.

A water pressure boosting device includes an elongated, hollow body having a body wall positioned along a longitudinal plane of the elongated body to define a first chamber and a second chamber. The body wall includes a channel connecting the first chamber and the second chamber. The first chamber includes an inlet at a first end, an outlet at a second end, a passageway spanning between the inlet and the outlet, and a water turbine positioned within the passageway, in which the water turbine spins when a fluid flow passes through the passageway. The second chamber includes an air opening on the elongated body and an air turbine. The air turbine is positioned within the second chamber and rotatable about an axis, and the air turbine spins with the water turbine.