Bete Fog Nozzle, Inc.

Digital Equipment Corporation

Lincoln S Soule

Douglas J Dziadzio

Daniel T deLesdernier

Mark W Yorns

Shane S Taylor

Matthew P Betsold

Thomas A Bassett

Paul J Mueller

Ronald H Emerson

Thomas P Bowman

Michael J Mikaelian

Matthew Bete

Patricia E Waitkus

Raymond E Pickering

Delmar R Parsons

William T Walker

Robert E Bedaw

In a spray nozzle (), a carrier () defines a spray aperture (), a groove () surrounding the spray aperture for receiving an o-ring (), a first locating bore () for slidably receiving an orifice plate () seated against the o-ring () and for aligning the orifice plate with the spray aperture, and a second locating bore () for slidably receiving a swirl unit and aligning the swirl unit () with the orifice plate and spray aperture. The swirl unit () defines on its peripheral surface a recessed flat () forming a fluid passageway between the swirl unit and carrier. The swirl unit () includes a swirl chamber () defined by a curvilinear surface () formed within the swirl unit, and an inlet port () formed in fluid communication between the swirl chamber and fluid passageway. The nozzle body () is threadedly received within the carrier () behind the swirl unit () to axially press the swirl unit, and in turn press the orifice plate () against the adjacent surface of the carrier.

Swirl unit, orifice plate, and spray nozzle including same

A spray nozzle includes a body defining an inlet chamber and an outlet. An orifice disk, adjacent the outlet, has opposing surfaces, an inner sidewall extending between the opposing surfaces which defines an orifice, and a peripheral sidewall extending between the opposing surfaces for centering the orifice disk within the inlet chamber. A swirl disk, adjacent to the orifice disk, has opposing surfaces and a sidewall extending between the opposing surfaces. The sidewall of the swirl disk forms a periphery for centering the swirl disk, a hollow for creating a vortex adjacent to the orifice and an inlet for channeling fluid from the periphery to the hollow. A plug is fixed within the inlet chamber of the body for retaining the orifice and swirl disks as well as defining an annulus area in fluid communication with the inlet of the swirl disk.

Spray nozzle and swirl disk therefor

Swirl nozzle and method of making same

In a spray nozzle (,), a carrier (,) defines a spray aperture (,), a groove (,) surrounding the spray aperture for receiving an o-ring (,), a first locating bore (,) for slidably receiving an orifice plate (,) seated against the o-ring (,) and for aligning the orifice plate with the spray aperture, and a second locating bore (,) for slidably receiving a swirl unit and aligning the swirl unit (,) with the orifice plate and spray aperture. The swirl unit (,) defines on its peripheral surface a recessed flat (,) forming a fluid passageway between the swirl unit and carrier. The swirl unit (,) includes a swirl chamber (,) defined by a curvilinear surface (,) formed within the swirl unit, and an inlet port (,) formed in fluid communication between the swirl chamber and fluid passageway. The nozzle body (,) is threadedly received within the carrier (,) behind the swirl unit (,) to axially press the swirl unit, and in turn press the orifice plate (,) against the adjacent surface of the carrier.

In a spray nozzle, a carrier defines a spray aperture, a groove surrounding the spray aperture for receiving an o-ring, a first locating bore for slidably receiving an orifice plate seated against the o-ring and for aligning the orifice plate with the spray aperture, and a second locating bore for slidably receiving a swirl unit and aligning the swirl unit with the orifice plate and spray aperture. A pair of retaining lugs project inwardly from the carrier a predetermined distance for engaging the upstream end of the swirl unit to thereby retain the swirl unit and orifice plate within the carrier. The swirl unit defines on its peripheral surface a recessed flat which is aligned with the retaining lugs to thereby clear the lugs upon inserting the swirl unit into the carrier. An elongated slot is formed on the upstream end of the swirl unit for receiving a screw driver.

Fluid nozzle having a swirl unit and orifice plate, and means for

A nozzle for atomizing a liquid with a gas, such as an oil/steam or air/water mixture, injects the mixture through a plurality of orifices circumferentially spaced about the longitudinal axis of the nozzle, wherein each orifice defines an axis directed toward a respective portion of a linear target for creating a flat fan spray of substantially uniform fluid distribution. A mixing vane is mounted upstream of the orifices within the nozzle for creating a swirling or vortical flow within a mixing chamber to thoroughly mix the fluids prior to passage through the orifices. The mixing vane is in the form of a pair of transversely-extending, approximately sinusoidal vanes for creating the vortical flow and defining a central aperture for creating an axial flow within the vortical flow. The two-phase mixture is supplied to the mixing vane in a common inlet conduit.

Flat fan spray nozzle

A method and apparatus for the aqueous cleaning of a printed circuit board having surface mounted components assembled thereon. The invention involves a heated aqueous solution sprayed under high pressure through a helically-vaned nozzle that is moving rotationally about the plane of a moving printed circuit board. The apparatus accomplishes a thorough cleaning of all components and areas of the printed circuit board with the use of a water based cleaning solution.

Method and apparatus for the aqueous cleaning of populated printed

A nozzle is pressure activated to generate a fine droplet, conical spray. The nozzle has an outer tubular body with a fluid inlet opening at one end and a discharge opening at its opposite end. Coaxially disposed within the body is a conduit for carrying fluid from the inlet to the discharge opening. Adjacent the inlet end of the nozzle, the conduit includes an annular flange with fluid seal between the peripheral edge of the flange and the inner wall of the nozzle body. The conduit is axially movable within the tubular body over a predetermined distance. Adjacent the discharge end of the nozzle is a helical opening through the wall of the conduit. The helical opening is spaced for the discharge end of the conduit less than the extent of axial movement of the conduit. A closure plate is disposed at the outer end of the conduit for shutting off flow of fluid through the nozzle. A coil spring is disposed about the conduit and has one end engaged with a wall portion of the nozzle body and its opposite end is engaged with the inner surface of the flange for releasably urging the conduit toward the inlet opening to maintain the closure plate in nozzle closing relation at the discharge end of the nozzle.

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Wendell, MA, United States of America

Lincoln S Soule