A mixer device for an exhaust gas aftertreatment system of a motor vehicle includes a cylindrical housing that has a lateral wall in which there is an injection opening for an exhaust gas aftertreatment medium, a first end wall in which at least one inlet opening is formed, and a second end wall in which an outlet opening is formed; at least one air guiding element situated in the housing, that extends in curved a manner, and that guides an exhaust gas flow from the at least one inlet opening to the outlet opening; and at least one impact surface for the exhaust gas flow and/or the exhaust gas aftertreatment medium situated in the housing downstream from the inlet opening and oriented essentially perpendicularly to the injection direction of the exhaust gas aftertreatment medium.

A water treatment system is disclosed having an electrolytic cell for liberating hydrogen from a base solution. The base solution may be a solution of brine for generating sodium hypochlorite or potable water to be oxidized. The cell has first and second opposing electrode end plates held apart from each other by a pair of supports such that the supports enclose opposing sides of the end plates to form a cell chamber. One or more inner electrode plates are spaced apart from each other in the cell chamber in between the first and second electrode plates. The supports are configured to electrically isolate the first and second electrode plates and the inner electrode plates from each other. The first and second electrode plates are configured to receive opposite polarity charges that passively charge the inner electrode plates via conduction from the base solution to form a chemical reaction in the base solution as the base solution passes through the cell chamber.

A water treatment system is disclosed having electrolytic cell for liberating hydrogen from a base solution. The base solution may be a solution of brine for generating sodium hypochlorite, or potable water to be oxidized. The cell has first and second opposing electrode end plates held apart from each other by a pair of supports such that the supports enclose opposing sides of the end plates to form a cell chamber. One or more inner electrode plates are spaced apart from each other in the cell chamber in between the first and second electrode plates. The supports are configured to electrically isolate the first and second electrode plates and the inner electrode plates from each other. The first and second electrode plates are configured to receive opposite polarity charges that passively charge the inner electrode plates via conduction from the base solution to form a chemical reaction in the base solution as the base solution passes through the cell chamber.

A water treatment system is disclosed having electrolytic cell for liberating hydrogen from a base solution. The base solution may be a solution of brine for generating sodium hypochlorite, or potable water to be oxidized. The cell has first and second opposing electrode end plates held apart from each other by a pair of supports such that the supports enclose opposing sides of the end plates to form a cell chamber. One or more inner electrode plates are spaced apart from each other in the cell chamber in between the first and second electrode plates. The supports are configured to electrically isolate the first and second electrode plates and the inner electrode plates from each other. The first and second electrode plates are configured to receive opposite polarity charges that passively charge the inner electrode plates via conduction from the base solution to form a chemical reaction in the base solution as the base solution passes through the cell chamber.

A mixer device for an exhaust gas aftertreatment system of a motor vehicle includes a cylindrical housing that has a lateral wall in which there is an injection opening for an exhaust gas aftertreatment medium, a first end wall in which at least one inlet opening is formed, and a second end wall in which an outlet opening is formed; at least one air guiding element situated in the housing, that extends in curved a manner, and that guides an exhaust gas flow from the at least one inlet opening to the outlet opening; and at least one impact surface for the exhaust gas flow and/or the exhaust gas aftertreatment medium situated in the housing downstream from the inlet opening and oriented essentially perpendicularly to the injection direction of the exhaust gas aftertreatment medium.

Provided is a microbubble generating device with a simple structure that can stably and continuously discharge microbubbles in larger volumes from a discharge section. The microbubble generating device is provided with: a liquid introduction section 2 for introducing a liquid L1 within a tank T; a gas introduction section 3a for introducing a gas; a pressure feed section 4 for pressure feeding a liquid fluid L2 fed via the liquid introduction section 2 and the gas fed via the gas introduction section 3a; a microbubble generating section 5 for generating microbubbles B in the liquid fluid L2 pressure fed by the pressure feed section 4 and discharging the liquid fluid to the liquid L1; and a discharge flow rate adjustment section 55 for adjusting the discharge volume of the liquid fluid L2.

Problem: To supply a device and a method for accurately discharging a fixed amount of a liquid, the liquid containing solid particles, in a state that the solid particles are dispersed in the liquid material. Solution: A discharge device for a liquid material containing solid particles includes a first reservoir, a first air pressure supply pipe, a metering portion having a metering hole, a plunger moving back and forth in the metering hole, a nozzle, a switching valve having a first position and a second position, a plunger driver, and a switching valve driver. The discharge device further includes a second reservoir, a second air pressure supply pipe, a branch portion provided in an upper portion of the metering hole and having a branch flow path, and an opening/closing mechanism that establishes or cuts off communication between the second reservoir and the metering hole. In the discharge device, the liquid material inside the first reservoir can be transferred to the second reservoir, and the liquid material inside the second reservoir can be transferred to the first reservoir. A discharge method is carried out using the discharge device.

Provided is a microbubble generating device with a simple structure that can stably and continuously discharge microbubbles in larger volumes from a discharge section. The microbubble generating device is provided with: a liquid introduction section 2 for introducing a liquid L1 within a tank T; a gas introduction section 3a for introducing a gas; a pressure feed section 4 for pressure feeding a liquid fluid L2 fed via the liquid introduction section 2 and the gas fed via the gas introduction section 3a; a microbubble generating section 5 for generating microbubbles B in the liquid fluid L2 pressure fed by the pressure feed section 4 and discharging the liquid fluid to the liquid L1; and a discharge flow rate adjustment section 55 for adjusting the discharge volume of the liquid fluid L2.

A cavitation device and method for using the same is useful for cavitationally treating fluids by generation of hydrodynamic cavitation in the fluid followed by the subsequent collapse of cavitation bubbles. The passage of fluid through slot openings in a cylindrical insert mounted in a housing provides fluid jets in an annular cavity to induce hydrodynamic cavitation of the fluid. Fluid is discharged from the annular cavity into a downstream portion of the housing to collapse cavitation bubbles under static pressure.

An exhaust gas aftertreatment device for a motor vehicle has an exhaust pipe and a mixing chamber arranged in the exhaust pipe to mix an exhaust gas stream with a reducing agent which can be introduced into the mixing chamber by a dosing device. The mixing chamber has a wall which is on the input side as viewed in a main flow direction of the exhaust gas stream through the exhaust pipe and in which a first inlet for the exhaust gas is formed. The first inlet extends in some regions in a lateral surface region of the input-side wall such that exhaust gas entering the mixing chamber through the first inlet can be set in a rotating motion inside the mixing chamber. The dosing device has an outlet device where a longitudinal axis of the outlet device is inclined towards the main flow direction of the exhaust gas stream.