Abstract: The dispersion of a gas in a liquid is enhanced by accelerating a gas/liquid mixture to supersonic velocity, with subsequent deacceleration, in a conical in-line mixer.

Abstract: A carburetor and a fuel seeding system having the same including an air suction passageway through which air is fed, and a fuel feeding passageway which is disposed so as to be intersected to the air suction passageway and through which fuel is fed, the air suction passageway and the fuel feeding passageway being intercommunicated to each other. A roughened surface portion is formed on a wall surface of at least one of the air suction passageway and the fuel feeding passageway to generate turbulence in fluid flow and promote carburetion and granulation of the air-fuel mixture due to the turbulence. The tip portion of a jet needle serving as a part of the fuel feeding passageway may be provided with a substantially flat surface portion or a substantially conical surface portion having a vertical angle above 145 degrees.

Abstract: Apparatus for aerating a pool of liquid has a hollow, rotatable drive shaft journaled for rotation about an axis and coupled at one end to a driving motor. A propeller is mounted at the other end of the drive shaft. The propeller has a plurality of hollow blades in communication with an internal aerating fluid passage in the drive shaft. A plurality of air inlets is provided in the drive shaft and at least one outlet port is provided in each blade at the zone of highest negative pressure resulting from rotation of the blade in the liquid. The drive shaft automatically is movable from a dry-docked position in which the shaft is out of the liquid to an operating position in which the propeller blades are immersed in the liquid. A seal is provided between the propeller and the shaft journal to protect the latter against exposure to the liquid. The shaft is continuously pressurized between the journal and the seal to prevent liquid from passing through the seal should the seal become worn.

Abstract: A fog generator includes a reservoir for a liquid to be atomized, a plurality of ultrasonic transducers disposed in spaced relation to each other in the reservoir so as to be submerged within the liquid therein, a gas inlet duct extending through the reservoir, and a dome-shaped deflector overlying, and of larger diameter than, the gas inlet duct to deflect the gas flowing through the duct back towards the reservor to pick up liquid atomized by the transducers.

Abstract: A plastic housing has an inlet for the entrance of liquid containing contaminants and an outlet for the exit of aerated liquid and an air inlet located therebetween. An inlet nozzle is located in the housing between the liquid inlet and the air inlet. The nozzle has a bore with a flared inlet and a substantially cylindrical exit portion which discharges at an exit face. A discharge nozzle is located in the housing between the air inlet and the liquid outlet, and has a bore which is flared towards the inlet nozzle and which has a substantially cylindrical exit portion of a diameter greater than that of the inlet bore exit portion. Contaminated water from a wastewater source such as a swimming pool, hot tub, or swine manure pond may be passed under pressure through the aerator, mixed with air in an expansion chamber formed between the inlet nozzle and discharge nozzle and the housing, and may take place at relatively low flow rates and pressures.

Abstract: A calibrating apparatus for isothermally introducing, into a stream of dry gas, amounts of moisture lower than 1000 ppb, said apparatus comprising:A. a moist gas generating unit, comprising in its turn:i) a cylindrical shell;ii) a permeation module, inside said cylindrical shell, containing water and comprising a peripheral membrane;iii) a thermal conditioner, arranged too inside said cylindrical shell, upstream of said permeation module;B. an isothermal heat sink, thermally connected to the outside surface of said cylindrical shell, wherein said moist gas generating unit, under item A), is lodged in a recess of said heat sink;C) a heat radiator;D) a Peltier heater-cooler, thermally arranged between said isothermal heat sink (under item B) and said heat radiator (under item C).

Abstract: The invention relates to improvements in or relating to a desuperheater for controllable injection of cooling water in a steam or gas line (17), said desuperheater device including an insertion tube (1) extending inside the pipe (17), said tube (1) having a conical outlet nozzle (7) with a valve body (5) movably arranged in a hole (2) in the insertion tube (1) such as to form a regulating port (4). The hole (2) in the insertion tube (1) opens out into a rotation chamber (3) with the centerline (10) of the hole and the centerline (11) of the rotation chamber (3) disposed relative each other at an angle deviating from 90.degree. by an angle .alpha., and where the angle .alpha. is greater than 0.degree. but less than 30.degree..

Abstract: A device for aeration of a liquid vessel comprising at least one guide rail /2/ and a plurality of sliders /3/ arranged thereon and the sliders /3/ include holders carrying at least one hose of which at least a portion is perforated and the device further comprises pulling means for pulling the hose /5/ into the empty or liquid containing vessel to its working position. The hose /5/ is movable along its axis with respect to said holders /4/ wherein the holders /4/ have a closed circular shape and their sliders /3/ are connected to pulling means /6/.

Abstract: A filter cassette having a fanfolded filter medium against which a thin wed strip is cemented on each fanfolded face by means of an edge gluing machine such that on the upstream side it projects slightly over the filter medium. To hold the filter cassette in the filter housing there is a clamping frame, which reaches over the edge of the filter cassette and forces the protruding, upstream side face of the outer strip into a seal of the filter housing and whose two opposing sides have a surface prong that reaches into the outermost fanfold of the filter medium and pushes it into another seal of the filter housing.

Abstract: A paint mist removing apparatus comprising a constricted passage for allowing a paint mist laden gas from a spraying chamber to flow at high velocity confluently with a cleaning liquid for delivery to an exhaust chamber; a liquid shooting section for scattering the cleaning liquid, in fine droplets in the gas flowing from a passage inlet down the constricted passage, toward a cleaning region in the constricted passage below the passage inlet; an upwardly facing inclined wall surface formed in the constricted passage for receiving droplets having captured paint mist in the gas flowing through the cleaning region, and guiding downflow of a liquid formed by collection of the droplets received; a downwardly facing wall surface formed in the constricted passage to be continuous from a lower end of the upwardly facing inclined wall surface; and a curved wall surface formed in the constricted passage between the upwardly facing inclined wall surface and the downwardly facing wall surface for deflecting the gas in th

Abstract: The invention is directed to a membrane carburetor for an internal combustion engine such as a two-stroke engine having an intake for drawing the mixture in by suction. The membrane carburetor has a venturi section wherein the mixture is formed. A main nozzle opening opens forward of a throttle flap and an idle nozzle opening opens rearward of the throttle flap both viewed in flow direction. Both openings are connected via channels to a fuel-filled control chamber to which fuel flows via an inflow channel. An inlet valve is mounted in the inflow channel and has a valve body disposed opposite a valve seat fixed in the housing. The inlet valve is actuated in the opening direction via a control lever by a control membrane delimiting the control chamber.

Abstract: A carburetor of the "HOLLEY" 4150 or 4500 series is modified to double the fuel intake capacity thereof, to limit fuel sloshing in the float bowls thereof, to provide an upper fuel transfer passage between a pair of fuel inlet passages for each float bowl, to enable ready removable and replacement of the main jets independent of removable of the float bowls and to provide alternate main jet fuel pickup zones in different plan areas of the bottom of the float bowls.

Abstract: The supporting grate for material exchange columns has a corrugated profile (3) and gas openings (5) which are all arranged in the flanks (6) of the profile above a minimum height H1. A projecting edge (13) of the gas openings increases the strength of the profile and forces the fluid to run off into the corrugation trough of the profile and from there into a collecting trough (12) lying below it. In this way the supporting grate also acts as a fluid collector.

Abstract: An improved reliable easily installed and maintained humidifier and draft control that is installed on a common ceiling mounted forced air duct output register and has an easily replaced and maintained water bowl and fan mounted above the water bowl that has radially extending fan blades about an axle in the center of the fan that rotates when air is discharged from the register and the air is directed to facilitate air movement that assures evaporation of the liquid placed in the bowl and the fan blades may be shaped to direct the flow in a predetermined manner.

Abstract: The present invention refers to improvements in contact filling for cooling towers, of the type comprising prismatic triangular bars (1) made of plastic material and arranged in multiple parallel horizontal layers, one lateral plan face thereof being turned upwards, the improvements comprising a support structure having the shape of a vertical grill (2) with lozenge-shaped meshes, said support structure intended to provide stable support to said bars (1) which are stably seated by their peaks and flanks, each of said bars (1) further including an inner longitudinal edge extending in one or in a pair of longitudinal rectilinear rules (3), whose completely free edge is cut in transversal teeth (4) having negative hollow intended to obtain attachment over the grill seats (2), as well as to impede formation of liquid grooves or beads along the rules (3).

Abstract: A venturi scrubbing system optimized for removing the most optically active sized particles from a gaseous effluent stream is disclosed. Before entering the venturi the effluent stream is subcooled to cause condensation of water vapor and other condensibles, thereby greatly reducing the volume of the effluent stream. In the venturi stage a scrubbing liquid is added in the form of droplets having a median diameter which is optimized to remove the optically active particles. Preferably, the median diameter of the scrubbing liquid droplets is between 10 and 200 microns. A two-fluid nozzle may be used to efficiently form the droplets. After passing through the scrubbing stage, which may also comprise one or more impingement plates, the cleansed effluent may be passed through an afterburner to remove combustible materials such as organic vapors.

Abstract: A downcomer tray assembly for vapor liquid contact towers. The region of the tray beneath an upper downcomer is constructed with a raised, perforated region for facilitating vapor passage therethrough and improving mass transfer efficiency. The downcomer includes a series of grouped discharge orifices disposed above either the perforated inlet or, in some cages, covered inlet areas which comprise momentum barriers. The covered areas in conjunction with the grouped orifices break the momentum of the liquid impacting upon the inlet area to reduce weeping. The vapor rising through the open inlet area sections is also selectively directed into the liquid discharged from the grouped downcomer orifices to promote uniform aeration of the liquid. A splash deflector is disposed outwardly of the raised inlet area to reduce any liquid maldistribution flowing from the inlet area and to deflect liquid splashed outwardly therefrom.

Abstract: Improved catalyst-downcomer-tray assemblies for vapor liquid contact towers. Downcomers are constructed for receipt of bundles of catalyst media used to promote chemical reactions therein. Raised, perforated regions of the underlying trays are then disposed therebeneath for improving mass transfer efficiency. The raised regions reduce fluid pressure to vent excess vapor from downcomers and trays therebeneath. The vapor generated within the downcomers from the catalytic reaction may then be selectively directed into the liquid discharged from the downcomer disposed on the tray above and imparted with a horizontal flow characteristic. In this manner the catalytic reaction vapors can be effectively released to facilitate a stabilized vapor-liquid flow configuration with improved chemical reaction occurring in the downcomer of the process tower.

Abstract: An improved apparatus for introducing steam into an airstream in heating, ventilating and air conditioning system includes a supply header, steam dispersing structure and structure for collecting condensation from the steam dispersing structure. The supply header is adapted for connection to a source of steam and is preferably elevated with respect to the return header, so that condensation in the supply header and steam dispersing structure is forced into the return header under the influence of steam pressure and gravity. One embodiment of the invention presents a unique modular design whereby the steam dispersing structure can be quickly connected and disconnected from the headers. This allows the apparatus to be broken down and assembled on site, which simplifies and reduces the expense of installation.

Abstract: A dough ball conveyor loader apparatus includes a flat conveyor belt supported horizontally and a loading unit positioned above the belt. The loading unit positions each of a series of dough balls on the belt. The loading unit also forms a flat on each of the dough balls against the flat belt to prevent movement of the dough balls upon movement of the belt.