The application relates to microfluidic apparatus and methods of use thereof. Provided in one example is a microfluidic device comprising: a first fluidic input and a second fluidic input; and a fluidic intersection channel to receive fluid from the first fluidic input and the second fluidic input, wherein the fluidic intersection channel opens into a first mixing chamber on an upper region of a first side of the first mixing chamber, wherein the first mixing chamber has a length, a width, and a depth, wherein the depth is greater than about 1.5 times a depth of the fluidic intersection channel; an outlet channel on an upper region of a second side of the first mixing chamber, wherein the outlet channel has a depth that is less than the depth of the first mixing chamber, and wherein an opening of the outlet channel is offset along a width of the second side of the first mixing chamber relative to the fluidic intersection.

To provide a mixing device, a mixing tube, a drug solution injecting system, and a drug solution mixing method capable of evenly and efficiently mixing a plurality of kinds of drug solutions. The mixing device according to the present invention includes: a swirling flow generating chamber; a first inflow opening for introducing a first drug solution into the swirling flow generating chamber in a direction parallel to a central axis of the swirling flow; a second inflow opening for introducing a second drug solution into the swirling flow generating chamber so as to generate a swirling flow of the second drug solution having a specific gravity lower than that of the first drug solution; an outflow opening for discharging a mixed drug solution; and a narrowing chamber which is interposed between the swirling flow generating chamber and the outflow opening and has a space continuously narrowed toward the outflow opening.

An apparatus for converting a dry material into a liquid concentrate includes a mixing vessel having an outlet opening, a dispenser for dispensing a predetermined weight of a dry material at a predetermined drop rate onto a predetermined drop location within the vessel, an inlet pipe connectable to a source of liquid for introducing a liquid into the vessel; a sensor for sensing the volume of liquid within the vessel; a pump for supplying a pressurized flow of recirculating liquid to the vessel; and a first, a second and a third agitating nozzle mounted within the vessel. Each agitating nozzle is operative to produce a jet of liquid oriented in a predetermined direction within the vessel. The nozzles are cooperable to generate within the vessel a moving body of liquid into which a dry material dispensed into the vessel is able to dissolve or to disperse.

An artificial-whirlpool generator includes a whirlpool generating member including at least one water inlet, a whirlpool generating chamber communicating with the water inlet, and a whirlpool outlet that is formed at a lower end portion of the whirlpool generating member and communicates with the whirlpool generating chamber; a position-fixing means that fixes the whirlpool forming member such that the entirety of the whirlpool generating member or only a portion of the whirlpool generating member, including the whirlpool outlet is submerged; and a swirling flow forming unit that forces water in a waterbody to be introduced into the whirlpool generating chamber through the water inlet and rotates the introduced water in one direction around an axle provided at a center portion of the whirlpool generating chamber to form a whirlpool that descends toward the whirlpool outlet.

The application relates to microfluidic apparatus and methods of use thereof. Provided in one example is a microfluidic device comprising: a first fluidic input and a second fluidic input; and a fluidic intersection channel to receive fluid from the first fluidic input and the second fluidic input, wherein the fluidic intersection channel opens into a first mixing chamber on an upper region of a first side of the first mixing chamber, wherein the first mixing chamber has a length, a width, and a depth, wherein the depth is greater than about 1.5 times a depth of the fluidic intersection channel; an outlet channel on an upper region of a second side of the first mixing chamber, wherein the outlet channel has a depth that is less than the depth of the first mixing chamber, and wherein an opening of the outlet channel is offset along a width of the second side of the first mixing chamber relative to the fluidic intersection.

The present invention relates to a mixing device (10) for mixing at least anode exhaust gas (AEG) with cathode exhaust gas (CEG) from a fuel cell stack (110) of a fuel cell system (100), having a cathode exhaust gas line (30) with a cathode exhaust gas connection (32) for fluid-communicating connection with a cathode exhaust gas section (134) of a cathode section (130) of the fuel cell stack (110) and an anode exhaust gas line (20) with an anode exhaust gas connection (22) for fluid-communicating connection with an anode exhaust gas section (124) of an anode section (120) of the fuel cell stack (110), characterised in that the anode exhaust gas line (20) is arranged within the cathode exhaust gas line (30) and has a closed anode exhaust gas line end (24) and at least two anode exhaust gas outlets (21) into the cathode exhaust gas line (30) with outlet directions (OD) radial to the anode exhaust gas line axis (AEL) and to the cathode exhaust gas line axis (CEL), wherein, further downstream of the anode exhaust gas line end (24), the cathode exhaust gas line (30) transitions into a mixed exhaust gas line (40) with a mixed exhaust gas connection (42) for fluid-communicating connection with a burner inlet (152) of an afterburner (150) of a fuel cell system (100).

A matter displacement and mixing system having a mixing chamber for material to enter, and a vortex aperture that directs air into the mixing chamber at either a high velocity for violent shearing or lower velocity for gentle mixing. This would depend on the shape of the vortex aperture, or the pressure.

This invention provides a microscopic bubble generator that can stably/efficiently generate a large amount of microscopic bubbles in liquid in a short time and can be easily cleaned in an assembled state and in a disassembled state, and a gas-liquid dissolving tank that can be suitably used for the apparatus. In the gas-liquid dissolving tank that promotes dissolution of gas mixed with liquid in the liquid, openings that pass the flowing gas-liquid are formed at an upper portion and a lower portion of a container of the tank, a plurality of separation walls that vertically divide a plurality of chambers are disposed in the container, openings that connect upper and lower chambers are formed through the separation walls, the upper ends of the openings of the separation walls extend predetermined distances upward from the separation walls, and the lower ends of the openings of the separation walls extend predetermined distances downward from the separation walls.

An apparatus for converting a dry material into a liquid concentrate includes a mixing vessel having an outlet opening, a dispenser for dispensing a predetermined weight of a dry material at a predetermined drop rate onto a predetermined drop location within the vessel, an inlet pipe connectable to a source of liquid for introducing a liquid into the vessel; a sensor for sensing the volume of liquid within the vessel; a pump for supplying a pressurized flow of recirculating liquid to the vessel; and a first, a second and a third agitating nozzle mounted within the vessel. Each agitating nozzle is operative to produce a jet of liquid oriented in a predetermined direction within the vessel. The nozzles are cooperable to generate within the vessel a moving body of liquid into which a dry material dispensed into the vessel is able to dissolve or to disperse.

The present invention is related to an installation and to a method for recirculating and mixing a fluid which is preferably a shear-thinning fluid. The installation comprises a tank, a pump, a piping assembly connected to the pump and comprising an injection piping for injecting said fluid into the tank and a return piping coupled to the injection piping for pumping the said fluid from the tank to the injection piping, wherein the piping assembly and the tank form a flow recirculation path in which fluid is homogenized by recirculation of the fluid upon action of the said pump, the injection piping being designed such as to reinject the fluid in at least two peripheral bottom locations with an horizontal and/or inclined orientation such as to create a swirl movement in the tank and to reinject simultaneously said fluid upwardly through a central location in a zone comprised between the central axis of the tank and the half radius of the tank such as to create a jet of fluid having a main vertical component.