Abstract: The inlet device has a horn-shaped passage piece at a peripheral wall of a column that feeds a fluid tangentially into the column so that the fluid enters into a vortex flow that rotates around an axis adjacent to a central axis of the column. A middle zone and discharge zone of the passage piece are made in the manner of a diffuser and abut the peripheral wall to extends over less than one half of the wall. A discharge zone of the passage piece through which flow takes place presets a middle flow direction of the fluid which extends along the peripheral wall and is inclined against the main direction.

Abstract: A two stage kinetic energy spray device has a first stage first nozzle having a receiving end that receives a particulate stream, an injection end located axially to the first nozzle receiving end, the injection end receiving the particulate stream from the receiving end. A second stage has a second nozzle, the second nozzle having a gas receiving portion that receives an effluent gas, a convergent portion that is downstream from the gas receiving portion and a divergent portion that is downstream from the convergent portion, the convergent portion and the divergent portion meeting at a throat. The particle stream is accelerated to a first velocity in the first nozzle located within the second nozzle divergent portion The effluent gas is accelerated to a second velocity in the second nozzle. First nozzle injection end chevrons allow mixing of particulate and supersonic effluent streams prior to exiting the spray device.

Abstract: Method for performing a thermal spray process. Method includes heating and/or accelerating a gas to form an effluent gas stream, feeding a particulate-bearing carrier stream through an axial injection port into the effluent gas stream to form a mixed stream, in which the axial injection port includes a plurality of chevrons located at a distal end of said axial injection port, and impacting the mixed stream on a substrate to form a coating.

Abstract: Method for performing a thermal spray process. Method includes heating and/or accelerating a gas to form an effluent gas stream, feeding a particulate-bearing carrier stream through an axial injection port into the effluent gas stream to form a mixed stream, in which the axial injection port includes a plurality of chevrons located at a distal end of said axial injection port, and impacting the mixed stream on a substrate to form a coating.

Abstract: A two stage kinetic energy spray device has a first stage first nozzle having a receiving end that receives a particulate stream, an injection end located axially to the first nozzle receiving end, the injection end receiving the particulate stream from the receiving end. A second stage has a second nozzle, the second nozzle having a gas receiving portion that receives an effluent gas, a convergent portion that is downstream from the gas receiving portion and a divergent portion that is downstream from the convergent portion, the convergent portion and the divergent portion meeting at a throat. The particle stream is accelerated to a first velocity in the first nozzle located within the second nozzle divergent portion The effluent gas is accelerated to a second velocity in the second nozzle. First nozzle injection end chevrons allow mixing of particulate and supersonic effluent streams prior to exiting the spray device.

Abstract: An improved thermal spray apparatus and method of promotes mixing of axially fed particles in a carrier stream with a heated effluent stream without introducing significant turbulence into either the effluent or carrier streams. An axial injection port includes a plurality of chevrons at the distal end of the port. The chevrons are located radially around the circumference of the distal end of the axial injection port to increase the shared area between the two flow streams at the outlet of the port.

Abstract: An improved thermal spray apparatus and method of promotes mixing of axially fed particles in a carrier stream with a heated effluent stream without introducing significant turbulence into either the effluent or carrier streams. An axial injection port includes a plurality of chevrons at the distal end of the port. The chevrons are located radially around the circumference of the distal end of the axial injection port to increase the shared area between the two flow streams at the outlet of the port.

Abstract: The fluid inlet device for a column includes an inflow stub and a deflection unit. The deflection unit includes an input zone with a plurality of inlet passages of constant cross-sections that merge into diffuser-like passages formed by curved guide lamellae. The curved guide lamellae diffuse the flow of fluid from the lateral passages laterally and circumferentially of the column to separate a high density phase, such as liquid drops, from a low density phase, such as a gas, under centrifugal force. The curved lamellae also direct the flow of fluid from the central passages downwardly of the column.

Abstract: The inlet device has a horn-shaped passage piece at a peripheral wall of a column that feeds a fluid tangentially into the column so that the fluid enters into a vortex flow that rotates around an axis adjacent to a central axis of the column. A middle zone and discharge zone of the passage piece are made in the manner of a diffuser and abut the peripheral wall to extends over less than one half of the wall. A discharge zone of the passage piece through which flow takes place presets a middle flow direction of the fluid which extends along the peripheral wall and is inclined against the main direction.

Abstract: The fluid inlet device for a column includes an inflow stub and a deflection unit. The deflection unit includes an input zone with a plurality of inlet passages of constant cross-sections that merge into diffuser-like passages formed by curved guide lamellae. The curved guide lamellae diffuse the flow of fluid from the lateral passages laterally and circumferentially of the column to separate a high density phase, such as liquid drops, from a low density phase, such as a gas, under centrifugal force. The curved lamellae also direct the flow of fluid from the central passages downwardly of the column.