A device for rotating a fluid inside a spray nozzle includes a body defining at least one helical slot and/or a helical hole for the passage of all or part of the fluid. This device can be secured to a spray nozzle or a needle valve closing the spray nozzle. An application device includes such a device for rotating a fluid inside a spray nozzle.

An exhaust aftertreatment system for use with an over-the-road vehicle is disclosed. The exhaust aftertreatment system includes a flash-boil doser mounted to an exhaust conduit and a catalyst coupled to the exhaust conduit. The flash-boil doser configured to inject heated and pressurized reducing agent into an exhaust passageway defined by the exhaust conduit for distribution throughout exhaust gases passed through the exhaust conduit. The catalyst configured to react the reducing agent with the nitrous oxide in the flow of exhaust gases to provide treated exhaust gases with a reduced nitrous oxide amount.

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.

The method is for discharging water through a faucet. The nozzle is attachable to a faucet and switchable between a spray-mode and a mist-mode. An inner cavity has filters and a water rotating device. The housing has an opening defined therein in fluid communication with the inner cavity and grooves and an orifice at a bottom portion thereof. The second filter is disposed below the opening. When in the spray-mode, water flows out through the opening and through grooves and is discharged as spray and mist at a bottom of nozzle. When switched to the mist mode, water only flow through the second filter but not through the opening. Water flows through the water rotating device to create a rotation of the water and the rotating water is discharged through the orifice as mist.

A two-piece nozzle for an aerosol dispenser has an outer piece with a tubular wall open on one side and closed on the other by a front wall (122), forming a cavity, with an outlet opening (123) in a center of the front wall; an inner piece dimensioned to penetrate into the cavity of the outer piece and be retained there, piece; channels (112, 125) in the cavity of the outer piece and/or on the surface of the inner piece, wherein said channels open into a turbulence chamber (127) in communication with the outlet opening (123) placed downstream in the flow path of the product flow; and a protrusion (113, 114) in the center of the front face of the inner piece, whose free portion opposite the front face, called torpedo (114) penetrates into the outlet opening (123) to reduce its cross section and form an annular outlet orifice.

A nozzle includes a body and a spoiler. The body has a fluid path, and an inlet and a spray orifice respectively located at opposite two sides of the fluid path. The spoiler is detachably disposed in the fluid path, and includes a barrier plate parallel to the inlet, wherein the barrier plate has grooves, and each groove has a through hole.

A body defines an interior region and an exterior region. A liquid-retaining portion retains a liquid. A mist generator transforms the liquid into a mist. A first chamber receives the mist to form mist-infused fluid. A fan applies pressure to fluid in the second chamber. A first fluid-transferring portion: receives at an inlet the mist-infused fluid from the first chamber in the interior region; emits the mist-infused fluid into the exterior region via an outlet; and changes the velocity of the mist-infused fluid between the inlet and the outlet. A second fluid-transferring portion receives at an inlet the fluid from the second chamber in the interior region and emits this fluid into the exterior region via an outlet. A light source emits light to illuminate the mist-infused fluid in the exterior region.

A fluid spray nozzle tip can include a feed hole body that defines at least one feed hole and a spray outlet, the at least one feed hole being in direct fluid communication with the spray outlet without also being in fluid communication with an upstream spin chamber. The at least one feed hole can be a plurality of feed holes, wherein the tip further includes a pintle sealing surface body extending from the feed hole body and configured to allow a pintle to seal against a sealing surface thereof.

A two-piece nozzle for an aerosol dispenser has an outer piece with a tubular wall open on one side and closed on the other by a front wall (122), forming a cavity, with an outlet opening (123) in a center of the front wall; an inner piece dimensioned to penetrate into the cavity of the outer piece and be retained there, piece; channels (112, 125) in the cavity of the outer piece and/or on the surface of the inner piece, wherein said channels open into a turbulence chamber (127) in communication with the outlet opening placed downstream in the flow path of the product flow; and a protrusion (113, 114) in the center of the front face of the inner piece, whose free portion opposite the front face, called torpedo (114) penetrates into the outlet opening (123) to reduce its cross section and form an annular outlet orifice.

The water-saving nozzle has an outer housing that includes an outer vortex screw in operative engagement with an inner housing that is disposed inside the outer housing. The vortex screw has helical threads. The inner housing has an inner vortex screw with outside helical threads. When water passes through the outer and inner vortex screws the water is rotated before the water passes into the vortex chambers of the inner and outer housings. The water discharged from the outer housing forms an outer dome shape and the water discharged from the inner housing forms an inner dome shape inside the outer dome shape.