US 12,268,650 B2
Jet nozzle
Hirotaka Niimi, Tokyo (JP); Nitin S. Kolekar, Piscataway, NJ (US); and Christopher Helmstetter, Langhorne, PA (US)
Assigned to AS America, Inc., Piscataway, NJ (US)
Appl. No. 15/734,130
Filed by AS America, Inc., Piscataway, NJ (US)
PCT Filed Jun. 11, 2019, PCT No. PCT/US2019/036451
§ 371(c)(1), (2) Date Dec. 1, 2020,
PCT Pub. No. WO2020/005529, PCT Pub. Date Jan. 2, 2020.
Claims priority of provisional application 62/690,384, filed on Jun. 27, 2018.
Prior Publication US 2021/0212890 A1, Jul. 15, 2021
Int. Cl. A61H 33/02 (2006.01); A61H 33/00 (2006.01); B05B 7/04 (2006.01)
CPC A61H 33/027 (2013.01) [A61H 33/6063 (2013.01); B05B 7/045 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A jet nozzle comprising
a single-piece body including a water inlet having a first inlet channel coaxial with a first inlet axis, a gas inlet having a second inlet channel coaxial with a second inlet axis, and an outlet coaxial with an outlet axis, the single-piece body defining a fluid passageway from the first inlet channel to the outlet;
an annular channel wall surrounding a water channel positioned in the fluid passageway between the first inlet channel and the outlet, the water channel being coaxial with the outlet axis and having a diameter that is smaller than a diameter of the first inlet channel;
an annular air chamber surrounding the annular channel wall, the air chamber in flow communication with and disposed between the second inlet channel and the mixing chamber, and
a mixing chamber coaxial with the outlet axis and positioned in the fluid passageway between the water channel and the outlet, the mixing chamber in flow communication with the gas inlet and having a diameter greater than a combined total diameter of the water channel, the annular channel wall, and the annular air chamber,
wherein
the second inlet axis is substantially perpendicular to and intersects the outlet axis at a point within the water channel,
the first inlet channel, the water channel, and the mixing chamber each have a constant diameter,
the outlet has a diameter that is larger than the diameter of the mixing chamber,
the annular channel wall extends from a channel wall first end positioned at an air chamber first end to a channel wall second end positioned at an air chamber second end or positioned in the mixing chamber,
the annular channel wall first end and second end each extend beyond the second inlet channel such that the annular channel wall completely overlaps the second inlet channel, and
the jet nozzle is configured so that air exiting the second inlet channel impinges the annular channel wall to create a turbulent flow and mixing with water in the mixing chamber.