Abstract: Airbag cushion assemblies for aspirating ambient air and related assemblies. Some embodiments may comprise an aspirating airbag cushion assembly comprising an airbag cushion, which may be configured to deploy from a housing or the like. The assembly may further comprise one or more inflation conduits configured to deliver inflation gas into the airbag cushion through a plurality of inflation ports. Each inflation conduit may comprise one or more features to improve aspiration efficiency, such as expanded distal portions and/or angled features to redirect inflation gases in a manner to improve the efficiency of the inflation gas to aspirate ambient air into the cushion.

Abstract: A fan is described with a first conveying element, fluidly connectable with a source of a primary air flow and defining a first passage for the primary air flow; a first mouth receiving a first aliquot of the primary air flow from the first passage; a first Coanda surface onto which the first mouth directs the first aliquot; and a first opening fluidly connected with the first mouth and crossable by the first aliquot coming of the first mouth and a secondary air flow; the fan comprises a second conveying element, fluidly connected with the first conveying element and defining internally a second passage for a second aliquot of the primary air flow, and comprises: a second mouth receiving the second aliquot from the second passage and a second Coanda surface onto which the second mouth directs the second aliquot.

Abstract: Airbag cushion assemblies for aspirating ambient air and related assemblies, methods, and components. Some embodiments may comprise an aspirating airbag cushion assembly comprising an airbag cushion, which may be configured to deploy from a housing or the like. The assembly may further comprise one or more inflation conduits configured to deliver inflation gas into the airbag cushion through a plurality of aspiration ports. Each inflation conduit may comprise features to improve aspiration efficiency, such as two or more rows of ports per conduit and/or angled features to redirect inflation gases in a manner to improve the efficiency of the inflation gas to aspirate ambient air into the cushion.

Abstract: A packing box is provided. The packing box is formed by several splicing materials of a standard model. The splicing material on the top of the packing box is provided with an air pump with automatic pumping and the pressure monitoring functions. The inner side of each splicing material is provided with an air bag, and the air bags are inflatable and connected to one another via connection tubes. The air bags are able to be spliced or separated with one another, and the shape of each air bag is subject to the outline dimension of a packaged object when the air bags are inflated. The size and shape of the packing box can be determined according to the size and shape of the packaged object, so is applicable to the objects with any sizes and shapes. The packing box does not need additional fillers and is recyclable.

Abstract: A pressure relief valve may comprise a housing, a disk, and a seal. The disk may be configured to deflect relative to the housing. The seal may form a sealing interface with at least one of the housing or disk. The pressure relief valve may be coupled to an inflatable slide or an aspirator.

Abstract: An aspirator includes a duct having a wall with a surface bounding a converging portion and a diverging portion of the duct. The converging portion of the duct has an inlet and the diverging portion of the duct has an outlet, the inlet being in fluid communication with the outlet through the converging portion and the diverging portion of the duct. The surface of the duct wall includes a conformal surface portion extending between the inlet of the duct and the outlet of the duct that is conformal with an aspirator seat surface portion of a support structure to conform the duct to the support structure. Evacuation assemblies are also described.

Abstract: Airbag cushion assemblies for aspirating ambient air to enhance inflation. Some embodiments may comprise an inflation module comprising an inflator and a plurality of inflation nozzles fluidly coupled with the inflator and configured to deliver inflation gas from the inflator into an airbag cushion. A housing coupled to the airbag cushion may comprise an aspiration inlet configured to allow for receipt of ambient air into the airbag cushion during inflation of the airbag cushion. The plurality of inflation nozzles may be configured to, upon actuation of the inflator, draw ambient air into the airbag cushion along with the inflation gas from the inflator. In some embodiments, a valve assembly may be positioned below the inflation nozzles and may be configured to automatically open upon actuation of the inflator and to automatically close during or following inflation of the airbag cushion.

Abstract: A liquid saving device includes a liquid guide and a vortex adaptor. The liquid guide includes a primary recess, an indentation, and a plurality of primary pores. The vortex adaptor includes at least one air inlet structure, a trench, a gap and a center through hole. The plurality of primary pores is coupled to the indentation for receiving a first liquid stream to generate a same plurality of second liquid streams at respective ends. At least part of the plurality of primary pores have different lengths. A primary pore has a shorter length if the first primary pore outputs its corresponding second liquid stream with a larger deflection, and vice versa. The trench receives both at least one secondary liquid stream and air to generate a first aerated vortex. An elevated flow of the first aerated vortex with a spray-form liquid stream to generate a second aerated vortex.

Abstract: An aspirator for use in an aircraft evacuation inflatable device inflation system. The aspirator includes: a barrel; a first inlet configured to receive a primary flow of pressurized gas a first pressure P1 during inflation of the aircraft evacuation inflatable device; a second inlet configured to a secondary flow in the form of atmospheric air; and a pressure release valve and interlock combination attached to the barrel. The interlock receives the primary flow and a downstream flow from the barrel, wherein the interlock causes the pressure release valve (PRV) to remain closed during an initial phase of inflation of aircraft evacuation inflatable device.

Abstract: An aspirator may comprise an aspirator body defining an air channel, an aspirator inlet disposed in the aspirator body whereby the air channel receives a compressed fluid, a venting aperture disposed in the aspirator body in fluid communication with the air channel, and a venting valve disposed in the venting aperture. The venting valve is in an open position and the venting valve moves to a closed position in response to the compressed fluid being received by the aspirator.

Abstract: An aspirator system for inflating an inflatable evacuation device includes an aspirator body having a plurality of flapper doors configured to open to allow intake of atmospheric gas. The aspirator system also includes an aspirator barrel connecting the aspirator body to the inflatable evacuation device, having connected inflation chambers wrapping around a circumference of the aspirator barrel and arranged along a length of the aspirator barrel, and being configured to provide an aspirator barrel chamber for guiding the atmospheric gas to the inflatable evacuation device when the aspirator barrel is inflated. The aspirator system also includes a showerhead nozzle connected to the connected inflation chambers, configured to direct high-pressure gas to inflate the aspirator barrel and compel intake of atmospheric gas through the plurality of flapper doors, to inflate the inflatable evacuation device.

Abstract: A fuel system includes a fuel pump and a jet pump assembly. The jet pump assembly includes a first fuel passage defined by a first tube. The jet pump assembly also includes a second fuel passage which receives pressurized fuel from the fuel pump, the second fuel passage having a primary orifice centered about and extending along a primary orifice axis such that the primary orifice axis is directed into the first fuel passage and such that the primary orifice introduces a first flow of fuel into the first fuel passage. The second fuel passage also has a secondary orifice centered about and extending along a secondary orifice axis which is not coincident with the primary orifice axis and which is directed at an inner surface of the first tube and the secondary orifice introduces a second flow of fuel into the first fuel passage which impinges the inner surface.

Abstract: An aspirator assembly for an inflatable device includes an outer housing disposed about an axis, an inner housing disposed about the axis, and a manifold coupled through the outer housing to an annulus located between the inner housing and the outer housing, the manifold providing pressurized gas to said annulus via a plurality of gas ejector nozzles. The annulus may be divided into a plurality of annulus segments by a plurality of vanes protruding radially from the inner housing.

Abstract: A device of an aircraft engine for separating oil from an air-oil volume flow and an apparatus for introducing oil into the air-oil volume flow. An outlet area of the apparatus for introducing oil is provided in a closed line section, into which the air-oil volume flow can be introduced via an inlet area. In accordance with the invention, a flow cross-section of the line section downstream of the outlet area of the apparatus tapers at least partially like a nozzle and at least in some sections inside a confusor area.

Abstract: This disclosure relates to a static mixer (1) with a plurality of nozzles, and more generally, to a mixer and method of use thereof for mixing phosgene and amine with shaped jets or at least two rows of nozzles (15,16) where the second row (16) is used to enrich an area of deficit of the phosgene flow within the static reactive jet mixer (1). Configurations of enriching secondary flow include the use of concentric, eccentric, or offset jets of amine/phosgene, and the use of nozzles with different and irregular geometries to help focus amine/phosgene to a specific area of the principal phosgene flow.

Abstract: A jet pump apparatus for mixing a higher pressure gas and a lower pressure gas, includes an inlet section, an outlet section, a diffuser section and a mixing section. Inlet section includes a higher pressure inlet and a lower pressure inlet. Mixing section includes a plurality of separated mixing chambers. The diffuser section includes diffusers for receiving mixed gases from the mixing chambers. The outlet section receives mixed gases from the diffuser section and conveys those gases to an outlet. The inlet section includes a higher pressure inlet which receives higher pressure gas, and a lower pressure gas inlet which receives lower pressure gas. Each of the mixing chambers has a primary nozzle for introducing primarily higher pressure gas from to a respective mixing chamber, and a secondary inlet for introducing primarily lower pressure gas to each of the mixing chambers.

Abstract: A cyclonic elevator tube comprising a manifold which supplies fluid under pressure via an annular transition ring with multiple, circumferentially spaced jet orifices. These orifices are set at inwardly and circumferentially directed compound angles for ejecting vortex jets of pressurized fluid through the elevator, to ultimately cause transportation of fluid material through the tubes. This apparatus comprises: a cylindrical chamber; a plurality of helically shaped venturi tubes spaced around the internal circumference of the chamber; a manifold connected to the inlet ends of the venturi tubes; and a high pressure gas supply connected to the manifold. The helix can be right or left handed and preferably the venturi tubes extend for less than one turn of the helix. The angle that the tangent of the helix makes with the longitudinal axis of the chamber is between 1° and 89°. The internal circumference of the chamber may be larger at the inlet end than at the outlet end.

Abstract: A static bilge pump has an inlet tube, a body and one or more eductors. It may be attached to the back of a boat using bolts, or other means such that the inlet tube may be inserted into the drain at the bottom of the bilge of a boat. A siphon tube connected to the inlet tube hasn't ends that may be placed at the bottom of the bilge or moved about by an operator. The eductor's are streamlined to minimize drag and prevent blockage by debris and flotsam. Buttresses may extends between the body and the doctors to improve stability.

Abstract: The liquid accelerator and chemical mixing system apparatus is a means for generating a velocity head differential to a current of liquid in a liquid environment or liquid containment means or a natural water body. The generating means includes a venturi eductor, having a motive liquid distribution housing and at least one venturi nozzle. The venturi eductor functions by motive liquid introduced from a remote motive liquid source, received via the motive liquid attachment means passing through a motive liquid main pipe or cylinder, through the liquid distribution housing, which is circumferentially attached to the eductor tube. The generated velocity head differential induces and accelerates the current of liquid, enabling the venturi eductor to discharge a current of liquid to move objects within the liquid environment by directing the current of liquid and to induce and mix chemicals in a liquid containment means.

Abstract: An annular ejector of an annular jet pump is coaxially arranged at a front of a central ejector. The annular ejector includes an annular nozzle, an annular mixing chamber, and an annular mixing duct. The central ejector includes a central nozzle, a central mixing chamber, and a central mixing duct. The annular nozzle is connected with a primary fluid inlet. A primary fluid inlet is in direct connection with the central nozzle arranged at a bottom of the central pipe, and a secondary fluid inlet is connected with a sidewall of the annular mixing chamber.

Abstract: An ejector system and method of operation for combining high and low pressure fluid flow streams is disclosed. A nozzle chamber communicates with a high pressure fluid flow stream and a suction chamber communicates with a low pressure fluid flow stream. The outlet of the nozzle chamber exit into the suction chamber and include multiple nozzles such that the high pressure flow stream exits the nozzle chamber in multiple flow streams having multiple surface areas for interlayer drag between the flows. The low pressure fluid flow stream is entrained by the high pressure fluid flow streams exiting the multiple nozzles to define an intermediate pressure flow stream.

Abstract: A jet pump apparatus for mixing a higher pressure gas and a lower pressure gas, includes an inlet section, an outlet section, a diffuser section and a mixing section. Inlet section includes a higher pressure inlet and a lower pressure inlet. Mixing section includes a plurality of separated mixing chambers. The diffuser section includes diffusers for receiving mixed gases from the mixing chambers. The outlet section receives mixed gases from the diffuser section and conveys those gases to an outlet. The inlet section includes a higher pressure inlet which receives higher pressure gas, and a lower pressure gas inlet which receives lower pressure gas. Each of the mixing chambers has a primary nozzle for introducing primarily higher pressure gas from to a respective mixing chamber, and a secondary inlet for introducing primarily lower pressure gas to each of the mixing chambers.

Abstract: A fan assembly includes a motor-driven impeller for creating an air flow, at least one heater for heating a first portion of the air flow, and a casing comprising at least one air outlet for emitting the first portion of the air flow, and first channel for conveying the first portion of the air flow to the at least one air outlet. To cool part of the casing, the casing diverts a second portion of the air flow away from the at least one heater, and comprises a second channel for conveying the second portion of the air flow along an internal surface of the casing. This second portion of the air flow may merge with the first portion within the casing, or it may be emitted through at least one second air outlet of the casing.

Abstract: A bladeless fan assembly for creating an air current includes a nozzle mounted on a base housing a device for creating an air flow through the nozzle. The nozzle includes an interior passage for receiving the air flow from the base and a mouth through which the air flow is emitted. The nozzle extends about an axis to define an opening through which air from outside the fan assembly is drawn by the air flow emitted from the mouth. The nozzle includes a surface over which the mouth is arranged to direct the air flow. The surface has a diffuser portion tapering away from the axis, and a guide portion downstream from the diffuser portion and angled thereto.

Abstract: Ejector device for forming a pressurized mixture of liquid and gas, comprising a suction chamber and a diffuser. The suction chamber comprises an injection nozzle for producing a jet of liquid flowing in a longitudinal direction, a gas inlet for admitting into the suction chamber a gas to be driven by the liquid jet, and an outlet opening for discharging the liquid jet and the driven gas from the suction chamber. The diffuser is connected to the outlet opening of the suction chamber and has, in the longitudinal direction, a transversal section that increases from the outlet opening, the diffuser being situated immediately after the outlet opening of the suction chamber.

Abstract: Single piece dual jet pump comprising at least one pressurized fluid inlet orifice and 2 separate outlet orifices which are built has two separate jet pumps. Fuel system for an internal combustion engine including a fuel tank, a reservoir within said tank, a pump for supplying the engine with fuel drawn from the reservoir and such a single piece dual jet pump designed to allow the filling of the reservoir with fuel from at least two different locations in said tank outside the reservoir.

Abstract: Systems, methods and media for generating fluid flow in an algae cultivation pond are disclosed. Circulation of fluid in the algae cultivation pond is initiated via at least one jet. The circulation of fluid generates a velocity of fluid flow of at least ten centimeters per second in the algae cultivation pond. A head is provided to the at least one jet that overcomes a head loss associated with the velocity of fluid flow of at least ten centimeters per second in the algae cultivation pond.

Abstract: Disclosed herein is a vacuum ejector pump. The pump is operated by compressed air which is supplied to or discharged from the pump at high speed, thus creating negative pressure in an outer surrounding space. The ejector pump includes a frame having an air inlet pipe, a disc, and an air outlet pipe which are sequentially arranged to be spaced apart from each other. The parts are coupled into a single structure via a spacer. A nozzle is mounted to pass through the center of the disc, and a flexible valve member is mounted to the spacer A nozzle body is accommodated in a cylindrical casing having a hole at a position corresponding to the valve member, and defines a chamber inside the spacer. A locking structure is provided on the casing and the nozzle body so as to prevent the casing, which accommodates the nozzle body, from rotating.

Abstract: A multi-stage ejector pump having an ejector nozzle system with the nozzles situated coaxially behind each other and axially set apart from each other by a spaced distance. The ejector a nozzle system is made up of a set of individual nozzles and nozzle spacers. The ejector nozzle system can be sealingly pushed into a nozzle-receiving shaft of a housing element. The housing wall is interrupted in the area between adjacent nozzles to provide a fluid connection to suction chambers. Each individual nozzle is provided with support elements on its outer periphery. The support elements are axially set apart and provide tilt-free or low-tilt support in relation to the wall of the nozzle-receiving shaft. The aim of the invention is to provide a multi-stage ejector pump which has compact construction, interchangeable nozzles and a high degree of efficiency.

Abstract: A self-compensating, energy saving heat transfer unit to provide an efficient means to transfer energy from steam to water in a central heating system. The steam enters a mixing chamber and creates a negative pressure environment. Water in a backwater pipe, which is at a lower temperature and pressure, is absorbed into the mixing chamber where energy is passed from the steam to the water. The water then leaves the first mixing chamber and enters a second mixing chamber where compensation water is added to make up for the possible loss of water that may occur in the central heating system. The heated water then exits the heat transfer unit and goes back into the central heating system. After being cooled in the central heating system, the water then reenters the heat transfer unit at the backwater pipe and continues the cycle over again.

Abstract: A rotary vane pump for delivering a fluid, having a rotary delivery device accommodated in a casing (2), a casing cover (3) arranged on one side of the casing and a bearing flange (4) on the opposite side. A suction zone (12) is formed on each of the sides, and an injector device (114) injects a pressurized fluid into the fluid as it is delivered toward each of the suction zones to thereby assure a uniform admission of the fluid into the cells of the rotary delivery device of the pump. Also a leakage path (13) for the fluid extends between the delivery zone (11) and suction zone (12). The leakage path (13) extends on the inner side (14) of the seal at least in sections parallel to the seal (5,6).

Abstract: A cyclonic ejection pump is designed for large flow rates, for example, applicable to the so-called “Oceanic Thermal Energy Conversion,” normally abbreviated to OTEC, an energy generating system developed for utilizing the potential thermal oceanic energy as well as for those applications for which a large capacity is required, such as the propelling of vessels. The pump is also able to function as a non-return valve.

Abstract: An oil pump that can be reduced in weight and is excellent in wear resistance and easy to manufacture is provided. The oil pump includes an oil pump housing formed of aluminum alloy, and an inner rotor and an outer rotor that slide along the oil pump housing with contact kept therebetween to suck and discharge oil. Composite layers including porous metallic bodies are arranged at parts of the oil pump housing that contact the inner rotor and the outer rotor. Pores of the porous metallic bodies are impregnated with the aluminum alloy constituting the oil pump housing.

Abstract: A hybrid vacuum pump comprising an ejector type compressed air-operated vacuum pump. Such pump comprises a housing having an inlet for compressed air, a second inlet connectable to the enclosure to be evacuated, and a discharge outlet. The incoming compressed air being divided into at least two parallel streams by a multiple-outlet chamber, each stream of compressed air passing through at least two nozzles arranged in series, intermediate chambers between successive nozzles of each parallel stream being provided separately for each stream. Pressure-operated valves being provided to automatically prevent flow of gas being evacuated to some of said nozzles as progress is made in producing the desired vacuum, and thus to increase air flow in the remaining nozzles for the achievement of a high vacuum. The pump being characterized by the use of a single body structure being used to support multiple nozzles having different forms.

Abstract: A vacuum boost device is connected in line with a vacuum suction line. The boost device includes a housing connected in said vacuum line and an inlet through which air of a liquid is directed to enter into the vacuum stream to assist in the vacuum and to break debris drawn through the boost device into smaller particles.

Abstract: A nozzle for attachment to a fluid-containing tank which is capable of applying negative air pressure to and establishing negative air pressure within the interior of the tank by forcing compressed air flow through the nozzle is provided by the present invention. The nozzle includes a vacuum pipe having an elongated generally cylindrical wall with first and second ends spaced apart, establishing a negative air pressure chamber therein that is capable of fluid communication with the interior of the tank when the nozzle is attached to the tank. The vacuum pipe is attachable to an opening of the tank at one end and open to ambient air at the other end, and openings exist through the wall of the vacuum pipe extending into the negative air pressure chamber. An air flow pipe surrounds the vacuum pipe, establishing an annular chamber therebetween. The air flow pipe is open to ambient air at the end adjacent the end of the vacuum pipe that is open to ambient air.

Abstract: A novel ejector, an ejector-refrigeration system, and a method of refrigeration are disclosed. The system is particularly well suited for the utilization of energy sources such as waste heat from automobile engines and solar collectors. Further, the system is compatible with the use of environmentally benign refrigerant such as water. Unlike conventional ejectors, the novel ejector disclosed in the present invention is designed to utilize the principal of "pressure exchange" and is therefore capable of attaining substantially higher levels of performance than conventional ejectors whose operating mechanism is based on the principal of "turbulent mixing".

Abstract: A fluid jet ejector and ejection method wherein a plurality of high velocity jet streams of a primary fluid are discharged through a vacuum chamber into a convergent-divergent diffuser or nozzle to draw a secondary fluid into the chamber in such manner that the secondary fluid is entrained within flow spaces formed between the jet streams and is carried from the chamber through the diffuser means by the jet streams. A modular fluid jet ejector composed of multiple parts which may be economically manufactured and assembled, and a fluid jet ejector assembly consisting of multiple stacked fluid jet ejectors which may be coupled in parallel to provide a high jet pumping rate.

Abstract: The operational capacity and efficiency of a combustion turbine is increased by treating the turbine inlet air to increase its density. The inlet air treatment is achieved in a columnar tower with the inlet air being drawn in at the top of the tower. Treatment water is injected into the tower at a downward velocity greater than that of the inlet air to establish a vertically descending, two-phase co-current flow of inlet air and treatment water. The system utilizes the natural phenomenon of drag-induced pressure boost to the air achieved by the difference in the relative velocities of the inlet air and the treatment water in the co-current flow. By utilizing a cold treatment water, for example at 32.degree.-40.degree. F., the tower creates a direct contact heat transfer situation that cools the inlet air, thereby further increasing its density.

Abstract: An apparatus for generating a stream in a body of water has at least one cylinder installed under water, and a water-jet pump housed in the cylinder. The pump draws water in through one end of the cylinder and produces a stream of water accelerated by a driving fluid supplied from an external source. The stream is discharged through another end of the cylinder to promote a flow in the body of water.

Abstract: The objects of the invention are to prevent the backflow of slurry by first enclosing it in a closed space and then using air to force it along a discharge channel, and at the same time to ensure the smooth throughput of the slurry by causing any foreign bodies in the slurry to be broken up en route. To this end, the invention is provided with a casing enclosing a circular cross-section rotor chamber and a rotor which fits inside said rotor chamber and which is caused to rotate by a drive means. The rotor is also fitted with blades en bloc which extend radially from the rotating center section and which form moving chambers that rotate along with the rotor inside the rotor chamber. The casing is also provided with an intake port that connects with the moving chambers at the slurry intake point and a discharge port and air supply port, each of which connects, with the moving chambers at the slurry discharge point.

Abstract: A liquid jet gas pump is connected to a vapor return line for a plurality of liquid dispensing nozzles. The jet pump has a multi-jet orifice plate and a single diffuser tube is coaxially aligned with the orifices in the plate, all of the jets entering the single diffuser tube.

Abstract: A jet pipe comprises a housing having a suction inlet for the medium to be taken in and an outlet, a conical tubular portion following the suction inlet towards the outlet and a section adjacent to the suction inlet provided with discharge openings arranged peripherally around the tubular interior for a discharge of a highly pressurized medium. When such jet pipes are used for processing contaminated soil, the wear of the individual parts of the jet pipe causes high expenses and non-productive time. In order to reduce wear and non-productive time, the section comprising the outlet openings is formed as a replaceable ring.

Abstract: An ejector includes a nozzle through which a first fluid is ejected to produce a vaccum in a vacuum chamber. The vacuum chamber includes an opening through which a second fluid is introduced. The vacuum chamber further includes an inlet through which a third fluid is introduced thereinto.

Abstract: Apparatus for extracting water comprises an air compressor, a diaphragm type suction pump, a jet pump for insertion into a borehole and a suction line connecting the jet pump to the diaphragm pump. Air to accelerate water through the jet pump and into the suction hose is supplied through an air line disposed internally of said suction hose.

Abstract: A nozzle assembly for aerating a pressurized liquid stream to produce a discharge of foam includes a plurality of arcuate venturi throats in a circular arrangement around the center of the nozzle together with a radial air inlet to each throat which is adjustable by relative rotation of the inlet coupling and the venturi housing. Additional turbulence may be created by a screen downstream of the venturi throats and secondary air may be admitted at that point.

Abstract: The invention relates to a multiple liquid injector composed of several identical elementary injection tubes 2, disposed in a rim around a central tube. Each tube 2 has an inlet conduit 3, itself comprising a converging truncated cone 6 and a cylinder 7, followed by an aeration zone 4 comprising an aeration chamber 8 fed tangentially by a conduit 9 perpendicular to the tubes 2, a jet centering funnel 10, followed by mixing cylinder 11, and lastly a diverging outlet conduit 12.

Abstract: An axially symmetric jet difuser ejector having attached primary injection nozzles without protruding outside the ejecting structure and being spaced around the ejector inlet. The primary nozzles have been specially designed to optimize the conveyance of fluids therethrough and the flow of ingested fluids therearound. The diffuser jet nozzle is provided with a strainer to prevent clogging of the narrow diffuser jet slots.

Abstract: A method and apparatus for pneumatically conveying solid materials such as soil, stones and the like. A hollow bored tube having an inlet end, a discharge end and an intermediate injector section is provided with at least one nozzle of the converging/diverging type within the injector section. A compressor supplies air at a pressure of about 90 psig to the nozzle to create an air stream within the tube directed toward the discharge end thereof, at a velocity in the supersonic regime. A strong vacuum is thus created in the region of the inlet end to provide rapid evacuation of the solids into the tube for conveyance therethrough and ejection at the discharge end thereof.

Abstract: A method for producing a flow of fluid comprised of at least phases from at least two primary flowing fluids, one of which has at least one liquid phase, and the other at least one gaseous phase, wherein the two primary fluids flow out respectively through one and another orifice, both of which may be streamlined, then a multiphase mixture is produced because the various flows are made to flow out through a third orifice and the channel sections of the orifices are adjusted in such a way so as to regulate at least one of the rate and pressure of the different flows, whereby a homogeneous multiphase flow is produced while minimizing the loss in energy of the different fluids.