Abstract: A variable width baffle assembly maintains constant, uniform impedance to the flow of cooling air across a vacant space on a partially populated electronic mounting frame for printed circuit board assemblies. The inexpensive but reliable baffle assembly includes end boards mounted on opposite sides of the space and a web member extending therebetween. The web member has a plurality of small apertures distributed thereover with a ratio of aperture area to web member surface area selected to approximate the impedance presented by populated portions of the frame. The web member may be mounted in arched, hinged, corrugated or sliding relationship to accommodate changes in the spacing between end boards so that a single model of baffle assembly can accommodate multiple sizes of vacant spaces.

Abstract: A synthesis gas cooler has concentric water walls to provide for heat transfer to a fluid in the water wall tubes. The inner water wall is concentric with the cooler shell and has a gas tight inlet connection for introducing hot synthesis gas. The inlet is located at the top of the shell. The bottom of the shell contains a body of water for quenching entrained solids which are carried with the synthesis gas, and there is a baffle to direct the flow of synthesis gas back up in the annulus between the two concentric water walls. The annulus has a closed upper end except for an outlet for the synthesis gas which is located near that end of the annulus. Also, there may be soot blowers along the length of the water walls to keep the heat transfer surfaces clean.

Abstract: The present invention relates generally to fluidized catalytic cracking. More particularly, the present invention relates to a baffle arrangement that improves separation of gaseous hydrocarbon reaction products from catalyst within the reactor vessel of a fluidized catalytic cracker unit. The catalytic reactor vessel includes an outer generally cylindrical shell having a stripping zone arranged at the lower end of the vessel. An inlet riser conduit forming a primary reaction zone extends generally external to and generally parallel with the shell to a location near the top of the vessel. The upper end of the riser conduit then turns through 180°, preferably through two right angle turns of 90° each, so that the riser conduit enters the vessel either on a horizontal run into the side of the vessel and then turns downwardly, or on a downward run through the top of vessel, into the center of the vessel to form an outlet, discharging downwardly the mixture of hydrocarbon and catalyst. The mixture is directed against a catalyst disengaging baffle whose surface is at an obtuse angle to the axis of the riser discharge conduit. The resulting angle of deflection of the flowing mixture is from 10° to 30°, preferably 20°. According to a preferred form of the present invention, a conical catalyst disengaging baffle is arranged with its apex directed toward and the axis concentric with and below the discharge outlet. The conical baffle is also above the stripping zone, so that the mixture is deflected outwardly from the outlet toward the wall of the vessel.

Abstract: The invention is concerned for a spoiler for motor vehicles, having a rear window, in particular for estate cars, integrated into a rear door, which window is formed by an aerofoil-shaped baffle profile which is supported on both sides and can be swivelled alternately between a swivelled-in position in which it extends approximately as a continuation of the contour of the roof and a swivelled-out position in which it partially projects beyond the contour of the roof, both limit positions of the baffle profile being lockable. In order to further improve the slipstream conditions, there is provision for the baffle profile to be arranged on the rear door, for the rear door to form a rear roof section, for an attack edge of the baffle profile to rest, in the swivelled-in position, on the rear roof section and for the baffle profile to define, in the swivelled-out position, a nozzle-shaped channel together with the external contour of the rear door lying opposite it, the said channel having a minimum entry height of 85 mm and a maximum outlet height of 65 mm.

Abstract: A system for separating a multi-component fluid such as a water-in-oil emulsion into at least two components. The system comprises a cylindrical vessel which is equipped with a baffle system interposed between fluid inlet and outlet means. The baffle system defines a horizontally extending spiral flow path which is in fluid communication with the fluid inlet at one end and with the outlet means at the other end. The flow path is characterized by a vertically elongated channel cross section. Within the flow path, one or more distributor means are provided which function to distribute the flow of fluid in the spiral flow path evenly throughout a substantial vertical interval of the channel cross section. The distributor means may be located adjacent the inlet and outlets of the vessel and may take the form of vertically elongated impellers mounted for rotation about vertical axes.

Abstract: A separator of multi-phase combinations of oil (low density) liquid phase, water phase, and solid sludge (high density) has an inlet low velocity liquid spreader disposed across and near the inside base of a closed separator tank. At least one inclined separator baffle is disposed and sealed completely across the tank interior, inclined from a baffle base terminus adjacent the tank base to a top baffle terminus adjacent the top of the tank and having a narrow oil volume phase collector continuing from the top baffle terminus to the interior tank top. The oil phase outlet of the separator tank connects to the narrow oil volume phase and is disposed adjacent to the top of the collector tank. The oil outlet is substantially elevated above the corresponding water phase outlet disposed on and connecting to the separator tank on the opposed side of the separator baffle. A tank solid sludge outlet provides for removal of the collected sludge from the tank bottom. The separator baffle can be heated as needed.

Abstract: of the Disclosure A contacting apparatus that is a vertically elongated, cylindrical shell having closed ends and separated by horizontal baffle plates into a multiplicity of discrete chambers with access from one chamber to another through concentric circular holes, axially centered in the baffles with a continuously rotatable shaft extending concentric with the baffles within the shell with at least one agitator means attached to the shaft positioned in each chamber and with the shaft in the circular openings providing annular openings in the baffles such that the ratio of backflow rate to feed rate through the openings is less than 1.5. A method for continuously producing arylene sulfide polymer in which reactants suitable for producing poly(arylene sulfide) are introduced into at least a first chamber of the contacting vessel described above thereby forming a reaction mixture which is passed through the chambers of the contactor while maintaining each chamber within conditions for producing arylene sulfide polymer and recovering arylene sulfide polymer from a chamber removed from the chamber into which the initial reactants are introduced.

Abstract: A fluid bed retorting process is provided in which solid heat carrier material and solid hydrocarbon-containing material, such as oil shale, tar sand and coal, are fluidly moved in a lateral direction until they spill over an upright barrier into an overflow discharge outlet. The solids can be premixed in the retort before entering the laterally moving fluid bed in a premixing fluidizing chamber or with a conical deflector. Upright annular or transverse baffles can be positioned in the fluid bed to minimize lateral backmixing of solids and can also extend above the surface of the fluid bed to minimize wave propagation. Any unfluidized coarse particles can also be moved laterally by gravity flow and jet deflectors.

Abstract: Solid heat carrier material and solid hydrocarbon-containing material, such as oil shale, tar sands or coal, are deflected be conical baffles into radially moving fluid beds which alternately flow radially outwardly and inwardly over a series of trays and downwardly into a series of peripheral and axial downcomers for a sufficient residence time to liberate hydrocarbons from the solid hydrocarbon-containing material. A fluidizing gas is injected upwardly into the beds to mix and fluidize most of the solids in the beds as well as to strip and transport the liberated hydrocarbons away from the beds for further processing downstream. Upright annular baffles can be positioned in the beds to minimize radial backmixing of solids and can also extend above the surface of the beds to minimize wave propagation. Any unfluidized coarse particles can be moved downwardly at an angle of inclination by gravity flow and jet deflectors.

Abstract: Gas scrubbing apparatus for removing sulfur dioxide from a gas stream with a cleaning liquid capable of absorbing the sulfur dioxide in the gas stream comprising a housing defining scrubbing chamber therein, a plurality of baffles in the scrubbing chamber at longitudinally spaced positions therealong for generating turbulence in the gas stream and rotating the gas stream about the central axis of the scrubbing chamber, spray means for spraying the cleaning liquid into the scrubbing chamber between the baffles to absorb the sulfur dioxide from the gas stream, and a mist eliminator downstream of the baffles to remove liquid droplets from the gas stream. The baffles are oriented so that each baffle rotates the gas stream approximately ninety degrees about the central axis of the scrubbing chamber as the gas stream flows thereby with all of the baffles rotating the gas stream in the same direction about said central axis. The apparatus also includes quenching means for cooling and saturating the gas stream prior to passage into the scrubbing chamber. Filtration means may also be provided for removing submicron and larger particulates from the gas stream after passage through the scrubbing chamber.

Abstract: Elements and tube-type heat exchanger employing such elements include a hollow core and a spiral baffle formed integrally with the core and extending axially thereof. The spiral baffle includes openings for receiving pipe bundles extending axially of the core. The core of each of the elements is stepped and recessed such that a plurality of the elements may be fitted together to form the heat exchanger.

Abstract: Optical systems which have stringent reouirements on stray light levels often need optical baffles. Some basic design principles and goals for baffles are Presented. Four generic optical designs and their advantages for stray light control are discussed: all reflective and all refractive reimaging and nonreimaging systems. The desirable shape and location of baffle vanes are shown, based on various design criteria. Presuming that the designer has the ability to control specular reflections from baffle surfaces, absorptive coatings which reflect specularly are preferred over those which reflect diffusely. Stray energy from edge diffraction can be controlled in a nonreimaging optical system by forcing light to undergo multiple diffractions.

Abstract: A carbon dioxide scrubber device for use in a closed or semi-closed breatg gas circuit in an underwater breathing apparatus having a low rate of gas flow includes a canister having a plurality of spaced, coaxial walls that are heated by associated helical water flow heat exchangers and define axial gas flow chambers in which particulate carbon dioxide absorbent material is confined in contact with the heated walls. The heat exchangers are served by common supply and drain lines through water flow controlling connectors having flow dividing and uniting orifices.

Abstract: A solar collector of modular configuration includes a plurality of evacuated collector elements disposed on opposite faces of a manifold in a staggered array. The manifold includes a central baffle which divides it into two parallel passageways through which the heat transfer medium, typically art, may be supplied to and removed from the collector elements. Each of the collector elements comprises an elongate double wall glass tube with one open end, the annulus between the walls being evacuated to a high vacuum. A thin wall metal distributor tube having a diameter marginally smaller than the inside diameter of the collector element and a length marginally longer seats within the collector element. The annulus defined by the distributor tube and inner collector element wall communicates with the proximate passageway and the distributor tube communicates with the distant passageway.

Abstract: An acoustic array for use at high hydrostatic pressures comprises an acouc isolation baffle positioned adjacent to the hull; an intermediate acoustic conditioning module supported over the isolation baffle; and an outer layer containing a plurality of hydrophone units. The acoustic isolation baffle comprises alternating layers of rigid and compliant materials bonded together in sandwich fashion, wherein the compliant layer is provided with a regular pattern of air cells. In adjoining compliant layers the pattern of air cells is translated relative to each other so that the load bearing walls of one compliant layer overlap the open cell regions of the adjacent compliant layer with only a rigid layer disposed therebetween. The acoustic conditioning module comprises spaced coverplates with spacer elements extending therebetween to form a plurality of chambers which contain viscoelastic damping elements bonded to the outer coverplate.

Abstract: A test apparatus is provided for testing the heat transfer resistance of a tube, such as a tube of a heat exchanger, the apparatus including a heating means, such as a block of metal surrounding and engaging a part of the tube, with an electric heater for heating the block, the block including at least two termistors at different distances from the tube to measure heat flux. A pump causes water to flow through the tube, and a thermistor measures the water temperature. A flow meter and a pressure drop sensor for sensing the drop in pressure across the block are also provided. The measuring devices other than the flow meter provide, preferrably, analog output signals, which are converted and supplied to a computer for computation of total heat transfer resistance, convective heat transfer resistance, conductive heat transfer resistance of the tube and friction factor.

Abstract: A cyclone with a tangential peripheral inlet and a central axial outlet is improved as to efficiency by inducting air between the inlet and the outlet. The inducted air is diverted by a baffle that temporarily separates it from the dust-laden inlet air, the baffle being arcuate in the same direction as the wall of the separation chamber, so that the inducted relatively dust-free air forms an inner layer and the dust-laden air forms an outer layer in the separation chamber. This promotes the separation of the dust on the inner side of the outer wall of the chamber and so facilitates separation of the dust from the air. A portion of the outlet air from which the dust has been separated can also be recycled in a stream disposed on the other side of the inducted ambient air.

Abstract: A heat exchanger for flowing media with passages for two media to be heated/cooled arranged within a casing (1) and separated by heat transmission surfaces. Within a closed, oblong casing of preferably circular cross-section there is, in coaxial arrangement, an inner tube (15) the diameter of which is considerably smaller than that of the casing. The tube has an inlet (27) leading from outside and located at one (the first) end of the casing and an outlet at the other, opposite end of the casing, directly connected with the inside of the casing. An outer tube (11) the diameter of which is considerably larger than that of the inner tube and considerably smaller than that of the casing is also provided within the casing. The intermediate space (23) between the two tubes (11, 15) is at one of the two ends provided with an inlet (28) and an outlet (29), separately arranged, and is closed at the other end. The intermediate space (32) between the outer tube and the casing is closed at one end and two helical baffles are arranged in sequence within the intermediate space between the tubes so as to constitute two helical passages (20, 21) connected respectively with the said inlet and outlet. The baffles extend from the end wall of intermediate space (23) comprising the said inlet and outlet, respectively whereas the opposite ends of the baffles terminate at a distance from the opposite end of the intermediate space so that the two helical passages pass into one another at the latter end (22). The casing is provided with a drainage outlet (8).

Abstract: A trailer chassis supports an apparatus for separating a lighter specific gravity material such as coal from higher specific gravity waste material. An open ended, elongated cylindrical drum is mounted for rotation about its axis inclined slightly from the horizontal, the drum bearing helical strips along the inner wall to drive the waste towards the inlet end. Water borne coal and waste enters the upper end of the drum. One of a plurality of annular baffle plates at the rear of the drum maintain a water level permitting floating of the lighter weight coal off of the heavier waste, where it spills over the baffles. A wire screen covers openings within the drum wall to the rear, between longitudinally spaced baffle plates to permit dewatering and removal of fine waste from the coal which exits the open rear end after passing from chamber to chamber, partially defined by the annular baffle plates. An auger underlying the chassis drives the water and fine waste forwardly. Water and fine waste is removed from a frontal screen area of the rotating drum, upstream of the discharge point for a chute bearing the water and unwashed coal leading into the drum.

Abstract: A coupling used between headers of adjacent collectors in an array of solar collectors of the liquid heat-exchange type to balance the flow of heat exchange fluid through the absorber of each collector The coupling is formed with an internal baffle in which an orifice of predetermined area is defined dependent on its position in the array The coupling may also be used to vent entrapped air from the headers and to drain liquid from them

Abstract: A thermostatically controlled electric fuel heater for raising the temperature of diesel fuel flowing from a fuel tank to a fuel filter to prevent precipitation of wax crystals in the fuel filter and consequent filter clogging at low ambient temperatures includes a heat conductive tube incorporated as part of the fuel line a short distance upstream of the filter. An electric heating assembly is positioned on the tube and includes an electric resistance heating element helically wound about the tube and controlled by a thermostat responsive to the temperature of the tube and located upstream from the heating element. The thermostat includes a molded plastic frame having a central opening through which the tube passes. The thermostat includes a bimetallic thermal element secured to the frame and arranged to actuate a snap-action switch carried by the frame. The frame includes a baffle for thermally isolating the thermal element from the heating element. A housing concentric with the tube encloses the electric heating element and thermostat.

Abstract: The baffle maintenance apparatus comprises a peening apparatus mounted on a movable carriage for reducing the width of a gap between two adjacent baffle plates in a nuclear reactor. The peening apparatus comprises an hydraulic hammer mounted on a pivotable plate that is capable of being positioned in proper relationship to the baffle plate for reducing the gap therebetween. The baffle maintenance apparatus may also comprise a gauging mechanism mounted on the carriage for determining the width of the gap between the baffle plates.

Abstract: A waterbed mattress has a baffle structure comprising a horizontally extending buoyant pad The pad is anchored to an underlying anchor sheet that is not secured to the walls of the mattress A porous mass of bound together fibers is positioned between the anchor sheet and the pad

Abstract: The acoustical energy absorbing baffle has a pair of restricted orifice screens rigidly secured in parallel, spaced relation by a lattice stiffener. The screen-stiffener assembly is immersed in a viscous fluid contained within a tank sealed with an elastic diaphragm. Incident acoustical energy is transmitted through the diaphragm and translated into energy absorbing motion of the fluid through the restrictive screens. A compliant mass is acoustically coupled to the fluid to augment fluid particle velocity through the screens and to further absorb energy.

Abstract: The present invention relates to a portable air pump apparatus that will take in air and cause it to flow through a lower chamber, direct it up and into a centrifugal impeller rotating in an upper chamber, concentrate its flow and dispell it at a greater than atmospheric pressure. The direction and concentration of the air flow taken in is accomplished by a cooperating network of curved baffles and sealed chambers.

Abstract: A shell and tube heat exchanger module which can be easily combined with other such modules to effect a close packed arrangement and which allows condensation of a vapor stream containing a non-condensible fraction without allowing a vapor buildup. The heat exchanger is particularly suitable as a main condenser in a cryogenic air separation process.

Abstract: The present separation apparatus makes it possible at low cost continuously to separate a mixture according to the density of its constituent particles which have been graded to an upper limit of the particle size of any shape, and is particularly suitable for the separation of electrical storage battery waste A separation medium, consisting preferably of a liquid and a gaseous flow medium, fed into a vertical separator column (1) via a mixing nozzle (10) flows through the column from the bottom upwardly Above a constriction (7) adjacent a through-flow aperture (9) there is a baffle (15) which is movable transversely relative to the longitudinal axis (4) of separator column (1) to form a flow channel (20) leading to the through-flow aperture (9) The width of the flow channel (20) when the baffle (15) lies against the internal wall (1a) of the separator column (1) is just sufficiently large to let the particles through The high flow velocity of the separating medium in the flow channel (20) as well as its continuous changes in shape caused by the baffle (15) result in an efficient separation of the mixture fed into the column through an upper, eccentrically arranged inlet opening (6) The heavy fraction (3) sinks into a lower collecting vessel (2) and the light fraction is discharged together with the outflowing separation medium through an upper outlet aperture (21)

Abstract: A shell and tube type heat exchanger having one or more intermediate baffles through which the tubes pass, with the tubes being secured at the baffles to prevent or reduce the probability of potentially damaging vibrations. Each baffle comprises a plurality of parallel plates placed closely adjacent each other or sandwiched together and having clearance holes through which the tubes pass. Individual plates of a baffle are offset in different directions and secured in the offset position to secure the tubes by the opposing engagement of the edges of their clearance holes.

Abstract: A reverse flow cooled dynamoelectric machine is provided with an annular baffle disposed in the gap thereof and spaced from stator core laminations at the end region for improving the cooling of these laminations. The baffle prevents heated gas flow from the end turn region of the rotor and gas from the cooling passages in the stator assembly from impinging in the gap.