The present disclosure is generally directed to a design geometry of a venturi or an ejector that is optimized in systems and methods for increasing the operating range of the venturi or the ejector in a fuel cell system. The present disclosure is also generally directed to fuel cell systems and methods for sizing and/or integrating a recirculation blower with a venturi or an ejector in a fuel cell or fuel cell stack. The present disclosure is further generally directed to systems and methods of operating a fuel cell system comprising more than one venturi or ejectors during transient operations.

A beverage container may comprise a beverage container lid assembly comprising at least one concentrate well to hold a concentrate vessel, a concentrate vessel retainer for each concentrate well to secure the concentrate vessel in the concentrate well, a feed line for each concentrate well comprising a feed line needle to puncture the concentrate vessel in the at least one concentrate well, a Venturi mixer in fluid communication with each feed line, a mixing valve in fluid communication with each feed line, wherein fluid flows from the concentrate vessel to the Venturi mixer when the mixing valve is open and the concentrate vessel is punctured by the feed line needle. Methods of using the beverage container and beverage container lid assembly are also described.

An eductor type gas to gas aspirator having improved entrainment efficiency includes a motive gas nozzle configured with a distal tip having an arcuate internal profile that converges in a downstream direction. The arcuate internal profile preferably has sinusoidal convergence curvature. In a preferred embodiment, the length L.sub.s of the nozzle tip is between 2D and 4D where D is the diameter of said outlet orifice, and the distance L.sub.d between nozzle outlet orifice and the upstream end of and out let barrel passage is between 0 and D.

The invention is directed to a nozzle (4) for mixing gas with liquid, comprising a body (8); a longitudinal passage (10) for the liquid, formed in the body (8) and with a portion (10.2) showing a reduced cross-section; at least one radial passage (12, 12.1, 12.2) for the gas, formed in the body (8) and opening out in the reduced cross-section portion (10.2); a liquid inlet port (14) formed in the body (8) and fluidly connected to the longitudinal passage (10); a gas inlet port (16) formed in the body (8) and fluidly connected to the at least one radial passage (12, 12.1, 12.2); wherein the gas inlet port (16) and the liquid inlet port (14) are arranged on a frontal transversal face (8.1) of the body (8).

A beverage container may comprise a beverage container lid assembly comprising at least one concentrate well to hold a concentrate vessel, a concentrate vessel retainer for each concentrate well to secure the concentrate vessel in the concentrate well, a feed line for each concentrate well comprising a feed line needle to puncture the concentrate vessel in the at least one concentrate well, a Venturi mixer in fluid communication with each feed line, a mixing valve in fluid communication with each feed line, wherein fluid flows from the concentrate vessel to the Venturi mixer when the mixing valve is open and the concentrate vessel is punctured by the feed line needle. Methods of using the beverage container and beverage container lid assembly are also described.

A double venturi may include an outer venturi and an inner venturi at least partially surrounded by the outer venturi. The double venturi may include an inner venturi inlet, an inner venturi throat, a high pressure inlet port located in the inner venturi inlet and a low pressure inlet port located in the inner venturi throat. The inner venturi and the outer venturi may be coaxial.

A production apparatus for a liquid containing gas bubbles includes a casing, a pump unit, and a gas bubble-mixing unit. The casing is provided with a main flow channel for a liquid, the main flow channel having a liquid inflow port and a liquid outflow port. The pump unit is disposed in the main flow channel and pumps the liquid to the liquid outflow port from the liquid inflow port. The gas bubble-mixing unit includes a first choke portion that is disposed in the main flow channel and has an inner diameter decreased and a gas supply channel that supplies the first choke portion with a gas.

A dielectric assembly for generating ozone includes a positive electrode, a negative electrode, a dielectric for generating the ozone, and a knob adapted to extend outside of a housing into which the dielectric assembly is to be placed. A system is also provided for sanitizing and deodorizing water, food, surfaces and air including a microbiological reduction filter device having an input connected to a water supply, a venturi injector disposed within a housing and connected to an output of the microbiological reduction filter device which generates ozone and mixes the generated ozone with the water, and an electrode assembly comprising a plurality of electrodes, a dielectric for generating the ozone, and a knob extending outside of the housing. The dielectric in a first embodiment and the entire dielectric assembly in a second embodiment can be removed from the housing and replaced in its entirety by the knob.

A dielectric assembly for generating ozone includes a positive electrode, a negative electrode, a dielectric for generating the ozone, and a knob adapted to extend outside of a housing into which the dielectric assembly is to be placed. A system is also provided for sanitizing and deodorizing water, food, surfaces and air including a microbiological reduction filter device having an input connected to a water supply, a venturi injector disposed within a housing and connected to an output of the microbiological reduction filter device which generates ozone and mixes the generated ozone with the water, and an electrode assembly comprising a plurality of electrodes, a dielectric for generating the ozone, and a knob extending outside of the housing. The dielectric in a first embodiment and the entire dielectric assembly in a second embodiment can be removed from the housing and replaced in its entirety by the knob.

The present invention relates to a flue ozone distributor applied in a low-temperature oxidation denitrification technology and an arrangement manner thereof. The flue ozone distributor comprises a distribution main pipe, multiple distribution branch pipes, multiple Venturi distributors and multiple delta wings. The multiple distribution branch pipes are led out from the distribution main pipe as parallel branches. The multiple Venturi distributors are arranged with an equal space on the distribution branch pipes. The delta wings are arranged on one diffusion segment side of the Venturi distributors. The flue ozone distributor is arranged in the flue. The present invention is mainly applied in a field of denitrification for flue gas of an industrial boiler/kiln by a low-temperature ozone oxidation method in industries such as pyroelectricity, steel and the like. The ozone-injecting direction is consistent with a flow direction of the flue gas. A soot deposit congestion problem does not exist. A turbulent flow behavior of the flue gas and ozone is especially strengthened. The oxidation efficiency is improved. A flue distance of a valid reaction is shortened. An application advantage in an actual project is very obvious.