A humidifier assembly is configured to humidify a pressurized flow of breathable gas from a flow generator of a CPAP unit and includes a base configured to be attached to the flow generator, the base including a recess portion. A water receptacle is configured to be received within the recess portion of the base and includes a floor and a flange around an opening at the top of the water receptacle. A lid is hingedly attached to the base and is configured to pivot between an open position and a closed position. This lid includes a top wall, an outer depending wall, an inner depending wall in the form of a double wall, and an outlet pipe. A lid seal is attached to an underside of the top wall of the lid by way of a tongue and groove structure. A catch is located on the base and configured to lock the lid in the closed position.

A micro-bubble acquisition apparatus is disclosed including a first body in which a water inlet channel, a water outlet channel, a vortex cavity communicating the water inlet channel with the water outlet channel, and an air inlet channel communicated with the vortex cavity are provided. The vortex cavity has an axis offset from an axis of the water inlet channel, the vortex cavity is provided with a water inlet communicated with the water inlet channel, and the water inlet is arranged at a side of the axis of the water inlet channel away from the axis of the vortex cavity.

Provided is an ultrafine bubble generation device for aquaculture or wastewater treatment with which it is possible to efficiently cause ultrafine bubbles to be dissolved or to coexist, and to increase the concentration of a gas in the liquid. An ultrafine bubble generation device for aquaculture or wastewater treatment provided with a channel for channeling a liquid, a compression device for pumping a gas into the channel, and a bubble generation medium for releasing the gas pumped by the compression device as ultrafine bubbles into the liquid in the channel, wherein the bubble generation medium is formed from a carbon-based porous material and is disposed so as to be horizontal or below horizontal with respect to the direction of flow of the liquid in the channel.

There is proposed a dispensing apparatus attachable to a container that includes a retractable spout. The dispensing apparatus can dispense a predetermined volume of liquid or aerate a liquid being dispensed, wherein the retractable spout includes a volumetric dispensing assembly for dispense the predetermined volume of liquid, and/or a turbulence forming element that is configured to aerate the liquid.

An aeration device pertaining to the technical field of sewage treatment includes a flow mixing chamber and an air inlet chamber. The flow mixing chamber has a liquid inlet opening, a liquid outlet opening, and an air inlet hole penetrating the chamber wall and located inside the air inlet chamber. The air inlet chamber has an air inlet opening and an interior space whose cross-sectional area is gradually reduced along the liquid flow direction in the flow mixing chamber. The cross-sectional area and number of the air inlet hole can be properly set in order for the mixed fluid produced by the aeration device to have relatively high-density small-diameter air bubbles that contribute to mixing the liquid flow and air flow sufficiently, dissolving oxygen rapidly and sufficiently into the liquid flow, increasing the oxygen dissolution rate of the mixed fluid, and enhancing aeration efficiency.

A system, method, and apparatus for oxygenation of a source of water, to increase the dissolved oxygen content of water. Aspects of the present invention harnesses and directs the power of water flowing through the system to extract oxygen present in air, rather than relying on the injection of gas or using other mechanical means. The water oxygenator is formed as an elongate cylindrical tube having a water inlet at a first end, a water outlet at a second end, and an air inlet proximal to the first end. The elongate cylindrical tube has an outer sidewall defining a mixing chamber within an interior cavity of the water oxygenator. The mixing chamber includes a plurality of baffles that are disposed in a spaced apart relation along a longitudinal length of the interior cavity.

An eductor includes an adjustable air inductor assembly connected to a source of outside air or other fluid. As liquid flows through a constricted orifice of the eductor, the venturi effect creates a vacuum or low pressure zone that draws inducting fluid through the inductor assembly and infuses such fluid into the liquid driven or transmitted through the eductor. The fluid inducted liquid is then discharged by the eductor into a body or contained volume of water. Improved aeration and fluid flow control, as well as reduced algae growth are achieved without extraneous mechanical equipment. Increased turbulent liquid flow is produced, for example, to more effectively clean dirt and debris from water recirculating swimming pools, fish tanks and similar environments.

A pouring system comprising a spout retainer and a pour spout that form a liquid-tight seal when attached to, or disposed with respect to, a liquid container, such as a bottle, thereby reducing or eliminating losses from poor seals suffered by use of conventional pour spouts. A spout retainer is configured to forms an essentially liquid-proof seal with an open portion of a container and a pour spout inserted into the container.

In certain examples, a beverage dispenser includes a gas system configured to collect ambient air, pressurize the ambient air, and dispense the pressurized ambient air, a valve configured to dispense a base fluid, and a concentrate system configured to dispense a concentrate. A manifold is configured to form a gas-injected mixed beverage comprising the base fluid, the concentrate, and the pressurized ambient air, and a nozzle is configured to apply a back-pressure upstream on the gas-injected mixed beverage and dispense the gas-injected mixed beverage.

The object of the present invention is to provide a faucet apparatus in which both the area for the air inlet port and the area for the babble-water flow discharge port are secured, without excessively increasing sizes of a faucet aerator cap and a faucet apparatus. The air inlet port is provided in a lateral surface of the faucet aerator cap. The flow channel of the spout is provided with a communication port for guiding air between the outside wall and the flow channel toward the air inlet port.