Abstract: Flare for disposal of combustible gases which includes a Coanda nozzle using high pressure steam. The nozzle has a self adjusting slot and a low pressure fuel gas supply is entrained into the mouth of the nozzle.

Abstract: A combustion device for use with pressurized and zero pressure hot air balloons or other hot air appliances, which comprises in general, a coanda-type inlet nozzle, a diffuser, a flame-arrestor screen, and a fuel preheater means for supplying required fuel vapor at a desired pressure to the inlet nozzle. The combustion device may be used with any suitable fuel, but it is primarily applicable to propane. The combustion device is a fuel pressure driven-nozzle-mixer-diffuser-arrestor screen burner combustion device which generates a stream of heated air for the transfer of thermal energy to a load.

Abstract: A fluid deflecting assembly is constituted by first and the second walls, the former having a curved portion to cause the adherence of the outlet flow and the latter having a substantially straight portion to cause the adherence of the outlet flow and having a ridge at its upstream end and a control vane rotatably positioned within a passage formed by the first and the second walls. The control vane is able to rotate around a shaft thereby causing wide deflection of the outlet flow due to the existence of the two walls. The height and position of the ridge is such as to help the vertical downward deflection of the outlet flow along the curved portion. The length and position of the straight portion is such as to help the horizontal deflection of the outlet flow along the straight portion.

Abstract: An atomizer has a channel through which material to be atomized, preferably comprising a transport gas and a powder, liquid or granular material, flows in a first direction. At or slightly downstream from the downstream end of the channel, preferably an atomizer gas is injected into the stream to be atomized, the injection occurring at an angle to the first direction. Preferably the atomizer gas is injected to impart a rotary motion to the stream. At the downstream end of the channel is a funnel-shaped outlet whose surface is so shaped that the stream can adhere to the interior surface of the outlet under the Coanda effect, producing an atomized cloud of transversely uniform density. A gas jacket may be used to control the shape of the cloud. The flow of both the atomizer gas and the gas forming the gas jacket is preferably adjustable in speed and direction.

Abstract: A nozzle for a jet stream in which the rear edge of the nozzle has a number of notches spaced therealong to widen the jet stream while directing the jet stream rearwardly of the nozzle. Each notch has a narrow front apex and a rear opening substantially wider than the apex, and each notch widens substantially smoothly and progressively from its apex to its rear opening, each notch having sides which at least over a major portion of their length diverge from each other at an angle of at least 60 degrees, and preferably at least 90 degrees. The nozzle will commonly blow into a diffuser to provide thrust augmentation but may also be used simply to blow over a flap, or it may be used without any diffusers or flaps, simply to provide noise reduction. So long as the notch divergence angle is wide enough, loss of nozzle efficiency is minimized, and when a diffuser is used, thrust augmentation is increased.

Abstract: A reduced operating noise nozzle for a cutting device using at least one electrode and an electric arc to cut material of a workpiece, comprises, a nose end piece disposed around the electrode which has an outer surface tapered from an outer relatively wide diameter end inwardly toward a smaller diameter end which faces the workpiece to be cut. Compressed air is directed in a substantially annular flow path along the tapered surface of the nose piece from the wide diameter end toward the smaller diameter end thereof. Noise which would have emanated from the nozzle, especially when the material of the workpiece which is melted by the arc is blown away to effect the cutting operation, will be greatly reduced.

Abstract: A fire-protection sprinkler head with a deflector having a spray confining surface that includes a deformed area with relatively greater inclination than surrounding undeformed areas so as to selectively lift the flow entering the deformed area and thereby raise its trajectory relative to the flow passing underneath the undeformed areas.

Abstract: A device for drying a web, such as paper web. Air distribution boxes 4 are arranged on both sides of the plane 2 of a path of guidance for the web. Each one of the distribution boxes includes a line of first opening means 6 extending transversally to the direction of guidance and arranged to direct the air essentially perpendicularly towards said plane, and a line of opening means 8 essentially parallel to the line of first opening means and arranged to direct the fluid essentially along said plane. Guide means 22 direct the air issued from opening means 8 away from the line of first opening means 6 towards and along an adjoining surface portion 10 of the box on a higher level than the line of first opening means 6. Each line of the first opening means in the box on either side of said plane is located in front of said surface portion 10 of the confronting box located on other side of the plane.

Abstract: A nozzle for use in web treatment apparatus includes a carrying surface extending substantially parallel to the web and guide members defining an annular slit in a central region of the carrying surface, the guide members being formed such that gaseous medium flows radially through the slit in contiguity with the carrying surface and in a direction substantially parallel to the web.

Abstract: Apparatus for drying a web, such as a paper web, including a plurality of nozzle members successively located one after the other both in and transverse to the direction of travel of the web, each of the nozzle members defining a substantially annular slit and a carrying surface associated with the slit for directing gaseous drying fluid substantially contiguous with the carrying surface in a substantially radial flow field relative to the annular slit and in a direction substantially parallel to the web.

Abstract: A fluid deflecting assembly has a nozzle defining structure having a fluid duct defined therein and a deflecting blade pivotally supported within the fluid duct. One of walls forming the nozzle defining structure has a wall portion adjacent the exit opening outwardly diverging in a direction downstream with respect to the direction of flow of the fluid medium through the fluid duct. Depending upon the position of the deflecting blade, the stream of fluid medium is forced to adhere to the outwardly diverging wall portion to attain a relatively wide angle of deflection.

Abstract: Nozzle apparatus for airborne paper web dryers of the non-impingement or underpressure type including a blow box member defined by top web supporting and bottom wall portions and back and front wall portions. The front and top supporting wall portions are interconnected by a curved guide surface and an upwardly directed nozzle is provided on the front wall portion spaced below the entry edge plane of the guide surface. The relative values of the width of the nozzle gap and the radius of curvature of the curved guide surface are such that the gas flow exiting from the nozzle follows a portion of the guide surface and departs therefrom prior to the exit edge plane of the guide surface. The upper surface of the top supporting wall of the blow box defines a small angle with the running plane of the web.

Abstract: The invention relates to the propulsion of transport vehicles in air or water, which involves the new use of a nozzle comprising an internal surface, a curved surface merging into the internal surface, a narrowed throat in the internal surface located towards the leading edge of the nozzle, a jacket surrounding the internal surface, an annular internal slot located in the internal surface between the curved surface and the narrowed throat and communicating with the jacket. The fluid under pressure is supplied through the slot the arrangement of the slot being such that the fluid is ejected at an acute angle of under 45.degree. to the direction of the exit flow tangentially to the curved surface.

Abstract: A method of and means for changing the direction of flow of the products of combustion leaving a fuel fired burner. Located adjacent to the discharge end of a combustion chamber of the burner is a quarl or burner block having a convex surface defining a deflection path which follows closely said surface and along which the projected combustion products are caused to flow under the influence of surrounding gaseous pressures. The passage through the quarl in advance of the convex surface is restricted, for example by an encroachment of the convex surface into the passage and a deflector lip projecting into the passage opposite to said encroachment. The quarl may be inserted in the wall of a furnace at right angles thereto and without projecting therebeyond to direct the combustion products along the wall surface.

Abstract: A burner has a flow tube along which passes a high pressure fuel gas from a Coanda nozzle at one end of the tube. The other end of the tube is divergent in the manner of a venturi in the gas flow direction. A peripheral ring is situated at the divergent outlet end which separates off the fuel gas and entrained air layer passing along the interior wall of the flow tube from the central gas flow and deflects this fuel fuel/air layer outwardly from the central gas flow.

Abstract: The burner comprises inner and outer tubular concentrically arranged conduits having their outlets positioned approximately in the same plane. The inner conduit is connected to a high pressure gas source; the outer conduit is connected to a low pressure gas source. The end face of the inner conduit forms a valve seat in which a Coanda-type valve body seats. The valve body is axially displaceable away from the valve seat so as to co-operate therewith to form an annular passage. A tubular shroud concentrically surrounds the conduit outlets and valve body in spaced relation therewith. In operation, high pressure gas unseats the valve body and flows at high velocity through the annular passage.

Abstract: A Coanda unit has a Coanda surface and a gas supply line terminating in a slot adjacent to the Coanda surface. One side of the slot is contiguous with the Coanda surface and the other side is formed of a tongue of resilient material which flexes within defined limits in response to the pressure of the gas supply so as to vary the slot width.

Abstract: A tribo-electro-gas-dynamic powder coating apparatus with an obstruction-free barrel having a semi-toroidal section throat at the inner end and having an opening at the outer end. An end cap is connected to the barrel end over the semi-toroidal section to form an annular chamber circumferentially surrounding the semi-toroidal section and having a clearance between the section and the end cap leading from the chamber to the barrel bore.

Abstract: A process and apparatus for the manufacture of fibers from fusible materials and particularly materials of low viscosity. The melt and gaseous flow medium is passed through a Laval-nozzle at a supersonic speed. The nozzle and speed are so selected as to cause an abrupt temperature drop in the flow medium within the nozzle which causes the melt to solidify into fibers.

Abstract: The burner comprises a tubular flow conduit which is attached to the end of a flare line so that combustible gas passes therethrough. The end face of the conduit forms an annular valve seat. A tulip-shaped valve body seats in the valve seat and can be displaced axially by the gas to open the conduit outlet as required while maintaining a back pressure in the flare line. Minute passages, such as transverse notches extending across the valve seat, are provided to permit gas, flowing at a low rate, to escape from the flow conduit when the valve body is seated. The rounded shape of the valve body induces the gas to form an attached jet which clings to the valve body surface and creates a low pressure zone at said surface. Air is therefore drawn toward the surface to mix with the gas and form a mixture adapted to burn smokelessly. The burner is able to accomodate various rates of flow while maintaining a stable flame.

Abstract: A process for the quiet and smokeless flaring of process gases by sharp separation of the air intake and combustion steps. Compared with conventional off-gas flares, steam consumption is reduced and blow-back of the flame into the mixing tube is avoided by using a combined mixing and combustion chamber. This extends the operating range and life of flare facilities.

Abstract: An improved air nozzle is provided which produces high thrust amplification over a relatively wide range of input flow rates while maintaining relatively low noise levels. The nozzle is adapted to provide flow amplification by inducing flow of ambient air with high pressure air.

Abstract: An air nozzle is provided which produces high thrust with low noise. The nozzle is adapted to provide flow amplification by inducing flow of ambient air with high pressure air.

Abstract: A jet noise suppressor nozzle comprised of a plurality of chute flow dividers through which air passes to mix with the jet gases at the boundaries formed by the downstream ends of the chute and the terminal plane of the nozzle with a plate at the forward area of the chute inlets under which jet gases are exhausted so as to create the aforementioned flow by the Coanda effect on the boundary layer air around the nozzle over the plate.

Abstract: A gun for forming a jet of particulate material and liquid comprises a body having a tapering bore therein connected by its longer end to a supply of fluidized particulate material and communicating by its other end with an opening in the body through which a tapering jet of fluidized particulate material will issue, and a pair of jet forming means for forming opposed jets of high pressure liquid which will converge and intersect beyond the body and in the path of the jet of particulate material to form a high energy jet of particulate material and liquid.

Abstract: An oil-water separating device utilizing the wall attachment effect for srating oil from an oil-water mixture in a continuous manner. The device is comprised of an oil-water mixture inlet nozzle delivering the mixture into a bounded region inside the separator to form a mixture jet which attaches to one wall creating a separation bubble in the bounded region. The bounded region is provided by a cavity formed by two or more plates joined together with an oil collecting chamber provided on top of the bounded region by an additional plate. The oil is captured in the bounded region by the separation bubble and flows into the oil collecting chamber through connecting holes. The oil in the collecting chamber is transferred by an oil outlet, either by siphoning or by means of a metering pump to an oil storage tank. A multiple stage oil-water separator can be provided by forming a plurality of series-connected, bounded regions between the two plates.