Abstract: A manifold assembly for use with heat exchangers comprises an extruded unitary tank having a substantially U-shaped cross-section and a unitary stamped header plate which can either be substantially planar or have a substantially U-shaped cross-section. The longitudinal bottom edges of the tank are crimped around the longitudinal side edges of the header plate, and the mating surfaces are brazed substantially along their entire lengths. The inner wall of the tank can include opposed longitudinal ribs having opposed slots therein for receiving baffles for adjusting the flow path within the assembled manifold. The tank, header plate, and baffles are formed of aluminum and aluminum alloy materials suitable for furnace brazing, at least one of the mating surfaces being fabricated with a lower temperature clad brazing material, so that when the tank, header plate, baffles and heat exchanger tubes are assembled, fixtured, and brazed in a high temperature brazing furnace, the clad material provides the brazed material to braze the tubes to the header plate, the header plate to the tank, and the baffles to the tank and the header plate.

Abstract: A silencer or noise suppressor for firearms consisting of an elongated body connected to the firearm muzzle into which the expanding gases and projectile are received. The expanding gases are initially received within a chamber and pass through ports defined in a deceleration plate into a chamber communicating with a plurality of baffles arranged in end-to-end relationship. The baffles each include a diverging bore through which the gases may expand, and externally, each baffle includes a spiral vane receiving the expanding and cooling gases. The vanes of adjacent baffles are in communication whereby gas back-pressure within portions of the vanes cause localized gas compression slowing gas expansion and the generation of audible frequencies.

Abstract: The RODbaffle heat exchanger concept was conceived in 1970 as a means of eliminating the destructive, flow-induced tube vibrations that exist in conventional, plate-baffle heat exchangers. The early RODbaffle design utilized elliptically shaped baffle rings oriented at 45{degrees} angles from the tube bundle axis; intersecting pairs of baffles contained either horizontal or vertical support rods located between each tube row. In addition to solving the existing tube vibration problem, this early RODbaffle exchanger exhibited reduced shellside pressure losses and increased thermal performance. Subsequent research efforts have resulted in a simplified RODbaffle design concept and have established thermal-hydraulic predictive methods. This paper describes various aspects of current RODbaffle heat exchanger technology.

Abstract: A hermetic refrigeration compressor is disclosed which includes a baffle member secured to the inner surface of the outer shell in overlying relationship to a suction inlet port. The suction baffle includes a dome shaped portion centrally disposed with respect to the inlet port and provides axially upper and lower openings defined between the baffle member and the inner surface of the outer shell.

Abstract: An apparatus to allow reaction in the liquid phase. The apparatus is a vessel (2) having a baffle (4). There are openings (6) in the baffle (4) through each of which a liquid (8) passes as a jet (10). Neighboring openings (6) are sufficiently close to allow impingement of the jets (10) thereby allowing for reaction of the liquids. The invention finds application in reactions where the reactants are immiscible and is particularly suitable in the nitration of aromatic hydrocarbons using mixed acids in aqueous solution. A method of conducting a reaction between at least two reactants in the liquid phase is also provided comprising passing a liquid containing the reactants through a plurality of adjacent spaced openings to create a series of impinging jets.

Abstract: A double containment and leak detection apparatus including a tank, having a bottom and a surrounding shell, with a containment baffle means above the bottom and a leak detection means in a containment space between the containment baffle means and the tank bottom. The containment baffle means includes a baffle plate sealingly joined to the interior of the shell to form a sealed containment space between the containment baffle and the bottom. The leak detection means is installed in the containment space to detect the presence of stored material held in the tank in the event such material leaks into the containment space. The leak detection means is connected, through a leak-proof access, to means external to the tank for responding to such leaks of stored material so detected inside the containment space. The invention further includes a primary containment means, made of liner material, located inside the tank above the containment baffle means and within the shell, capable of containing such stored material. The invention further provides a method for converting existing tanks to incorporate the double containment and leak detection apparatus of the present invention into existing facilities.

Abstract: The growth of caverns, formed around rotating impellers in a yield stress fluid during mixing in a stirred vessel, has been studied by observing impeller speeds at which fluid motion was first observed at the vessel's wall and base, and at the free liquid surface. The effect of impeller geometry has been studied with a disk turbine (DT), a two bladed paddle (2BP), a pitched blade turbine (PBT) and a marine propeller (MP). The presence of four baffles (10%) was found to increase the impeller speed at which the cavern reaches the vessel wall by 9% on average over that observed without baffles. After the cavern has reached the vessel walls, impeller type had a small effect upon the vertical expansion of the cavern with increasing impeller speed. Radial flow impellers (DT and 2BP), on average, performed better than an axial flow impeller (MP), with a mixed flow impeller (PBT) in between. Baffles significantly reduce the rate of this vertical expansion of the cavern. Clearance of the impeller from the vessel b...

Abstract: This invention relates to personal computers in which provision is made for effective cooling of components capable of generating significant heat during operation, such as certain high performance microprocessors. The personal computer has an enclosure for enclosing operating components, a printed circuit board mounted within the enclosure for supporting and interconnecting operating components of the personal computer, heat generating components mounted on the printed circuit board for performing operating functions for the personal computer, a fan for inducing air to flow into the enclosure, a fan for expelling air from the enclosure, and an air flow directing baffle mounted within the enclosure in the path of air flow from one fan toward the other fan and adjacent the heat generating components for directing the flow of air through the enclosure to pass over and cool the heat generating components.

Abstract: An absorbent article is disclosed for absorbing and retaining human exudate. The article includes a liquid permeable bodyside liner, a baffle and an absorbent positioned therebetween. The baffle is constructed of a liquid-impermeable inner layer and a cloth-like outer layer. The baffle and liner are joined together about their outer peripheries to enclose the absorbent. The absorbent has an hourglass shape with enlarged end portions separated by a narrow center portion. A pair of walls are formed on opposite sides of the center portion of the absorbent by securing an elastic strip between the liner and the baffle. The walls extend upward and outward from the center portion and are separated by a distance approximately equal to the width of one of the end portions. The upstanding walls prevent side leakage of body fluid, especially during periods of high fluid flow.

Abstract: A turbidimeter includes a housing having a cavity with an inlet through which the fluid enters the bottom of the cavity, and an outlet through which the fluid exits the top of the cavity. A removable baffle assembly is located within the cavity between the inlet and outlet. The baffle assembly is formed by three vertical plates spaced from each other and extending across substantially the entire cross sectional area of the cavity. The first plate defines a first passage near the top of the cavity through which all the fluid entering the cavity must flow. The second and third walls define a second passage near the top of the cavity through which gas bubbles entrained in the fluid travels to the outlet. A third passage is defined between the first wall and the outlet and a mechanism is provided for measuring the turbidity of the fluid flowing through the third passage. A calibration device formed by a block of glass ceramic material is insertable in the third passage to simulate a known turbidity fluid.

Abstract: This paper presents the results of a laboratory study of culvert fishways with weir-type baffles. Baffles with heights equal to 0.15 and 0.1 times the diameter (D) of the culvert were studied with longitudinal spacings of 0.6D and 1.2D. Equations have been developed to describe the relation between the discharge, slope, diameter, and the depth of flow. It has been possible to predict the barrier velocity that would exist at the baffles. The performance of the weir baffles has been found to be as good as that of the slotted-weir baffles. Key words: culverts, fishways, hydraulics, turbulent flow, open-channel flow.

Abstract: An ice dispensing apparatus includes a rotatable drum dispenser and an adjacent floating baffle, the baffle having an opening for ice bodies to pass from the drum dispenser to an ice crusher mechanism. The drum dispenser has blade augers spaced from the baffle a select distance and operate in connection with the baffle opening to prevent wedging of ice bodies.

Abstract: The performance of multiple downcomer type fractionation trays is stabilized against the effects of any rocking motion to which the surrounding column is subjected by the provision of vapor and liquid flow control baffles on the tray deck. One such baffle is perpendicular to the downcomers and extends upward. Vertical baffles are provided within and over the downcomers. A large number of bubble-promoting devices line the periphery of the tray.

Abstract: A cyclonic separator for particles suspended in the flow of an air stream. The separator comprises first and second spiral baffles adapted for mating engagement one within the other for imparting cyclonic flow to the air stream for collecting the particles from cyclonic motion thereof. The baffles are oriented with the first baffle rotated relative to the second baffle to therein form a flow path therebetween. The flow path between the baffles has in it a reversing, oppositely directed concentric spiral passage which carries the particles in a first spiral direction and then in a second opposite spiral direction. Each inner terminal end of the first baffle, or each outer terminal end of the second baffle, or both, may include an arcuate region of sharply increasing curvature adapted for collecting strayed paint particles and solvent droplets. The first and the second spiral baffles as described above may also be made from electrically conductive material and each is being held electrically insulated from the other for the application of electric potentials of opposite polarity thereto.

Abstract: An apparatus for drying a liquid film on a substrate web which includes a lower gas or air supply system and an upper gas or air supply system. The substrate strip is subjected to a flow of hot supply air (or gas) without mechanical support of guide elements, which air (or gas) forms a carrying cushion and at the same time supplies drying energy to the liquid layer applied to the substrate. The exhaust air (or exhaust air) is carried away through return channels. Slots for the gas or air supply and the return channels for the gas or air removal are arranged alternately in the lower gas or air supply system. The upper gas or air supply system has a greater width than the lower gas or air supply system. In the upper gas or air supply systen, the supply air or the gas is diverted by baffles onto the substrate and returned over the substrate web as return air or gas. The upper gas or air supply system is subdivided into sections for the supply air and exhaust air or the inflowing gas and outflowing gas, each section including two filter plates of porous material.

Abstract: A conduit isolation baffle assembly designed to be installed in a conduit system such as a vent and wastewater system of a building. The flexible baffle is installed in a groove having a sidewall and seat formed in the interior surface of a conduit to isolate the system for testing. Once the testing procedures are complete, the baffle is flexed into a saddle shape so that it is removable from the conduit without disassembly.

Abstract: Baffles are arranged relative to an oil cooler mounted in one of the tanks of a motor vehicle radiator so as to force coolant through the oil cooler rather than allow coolant to bypass same for enhanced heat transfer.

Abstract: A self-cleaning gas range has its frame support an oven with a storage compartment beneath the oven in spaced relation thereto. A burner, which is beneath the oven and above the storage compartment, heats the oven to a temperature to produce self cleaning. A baffle assembly, which is beneath a heat shield beneath the burner and above the storage compartment, prevents the top of the storage compartment from exceeding a predetermined maximum temperature when self cleaning occurs. The baffle assembly includes a bottom baffle of galvanized steel attached to the frame and forming the top of the storage compartment, an intermediate baffle of galvanized steel above the bottom baffle in spaced relation thereto, and an inner baffle of reflecting aluminum above the intermediate baffle in spaced relation thereto with the three baffles assembled to each other. Air passages in the intermediate baffle are not aligned with air passages in the bottom and top baffles so that air flows from beneath the bottom baffle through the air passages in the three baffles in a circuitous path and through openings in the heat shield to the burner. A radiation shield is supported on a brace extending between downwardly extending portions of the oven side walls only by point contacts. Each side wall has louvered openings beneath the first baffle and communicating with an air passage in the side wall so that air flows over the bottom of the first baffle and into the air passages.

Abstract: A muffler is provided with a pair of plates formed to define an array of tubes therebetween. At least one external shell is secured to at least one of the plates to surround selected portions of the tubes. The shell is formed to define a plurality of chambers separated from one another by a baffle crease. The baffle crease is parallel to and abutting a selected tube of the muffler to simplify the draw of metal material in the vicinity of the baffle crease and to thereby save metal. The baffle crease is of substantially uniform depth along a major portion of its length and is free of pockets that could conceivably retain corrosive fluids.

Abstract: A gas injector apparatus and process, having a gas injector tube ending at the top of a vertical reaction chamber, improves the thickness and resistivity uniformity of films deposited in CVD process reactors. The injection tube has a plurality of baffles to increase the residence time of reactant gases flowing toward the reaction chamber.

Abstract: This paper presents the results of a laboratory study of the hydraulic performance of fish weirs and fish baffles used by Alberta Transportation for improving the fish-passing capacity of culverts. It was found that if the longitudinal spacing of the weirs is limited to 0.6 and 1.2 times the diameter of the culvert, their performance is comparable to that of the corresponding weir and slotted-weir baffle systems, with regard to the depth of pool between the baffles as well as the barrier velocity. On the other hand, the fish baffles did not perform as well as the fish weirs under the conditions tested. Key words: culverts, fishways, baffles, turbulent flow, hydraulics, open-channel flow.

Abstract: A burner is of generally tubular configuration, and comprises an inner shell and an outer shell. The inner shell has therein a nozzle, an ignition electrode, and a sight tube. An annular gap is provided between the two shells, through which a comburant-gas flows to an annular, inwardly directed and constricted discharge opening, with swirl blades upstream of the discharge opening. A comburant-gas supply passes through openings in the inner shell upstream of a baffle which is positioned transversely of the inner shell, and which has radial slots therein inclined to the plane of the baffle to cause swirling of comburant-gas passing through the slots in the baffle. A toroidal-cyclone combustion zone is created due to the slots in the baffle creating a swirling downstream flow downstream of the baffle, and the inwardly directed annular and constricted opening, which aspirates comburant-gas which has passed through the baffle.

Abstract: A cooling system is provided for enclosed first and second heat sources including an enclosure substantially enclosing the heat sources. The first and second heat sources are positioned in the enclosure. A heat exchanger, also positioned within the enclosure, is connected through the enclosure to an external source of cooling fluid and is adapted for cooling air within the enclosure. The heat exchanger has a first surface for receiving the air to be cooled and a second surface for expelling cooled air. First and second air circulation means are provided within the enclosure for circulating air past both the first and second heat sources and the heat exchanger. A first baffle portion separates the first and second heat sources and extends to the first surface of the heat exchanger, and a second baffle portion extends to the second surface of the heat exchanger. The first and second baffle portions extend to positions that are spaced along the heat exchanger, and, thus, air flow from one of the air circulation means supplements air flow from the other of the air circulation means. A method of cooling an air cooled heat source within an enclosure is also provided.

Abstract: A sheet transport apparatus has opposed sheet transport guide baffles defining a sheet transport path having an upstream and downstream direction and, a switch adjacent the path to detect the presence of a sheet in the path, the switch having a main switch body fixedly mounted adjacent the path, a switch actuator movable between a rest position and a switch actuated position including an actuator arm having a free end and being pivotally mounted on an actuator pivot at the other end to the main switch body and movable between a position associated with the said rest position and switch actuated position, a switch actuator tip pivotally mounted to the free end of the actuator arm and movable between a first position extending the length of the arm into said path detecting the presence of a sheet in the path and a second position pivoted toward the sheet transport upstream direction out of the sheet transport path, the actuator tip being spring biased to the first position enabling positive switch actuation by the passage of a sheet in the downstream direction of the path and passively movable to the second position against the bias by the removal of a sheet from the path in the upstream direction.

Abstract: In a burner assembly for location within an air supply housing for a heater and disposed for inducing the movement of air through a blower and into and around a burner assembly during heater operation to create a supply of heated air for a space to be warmed, the burner assembly being of the type having opposite side walls, and upper and lower tiered baffles, each having connected thereon an air balancing baffle, forming cavities therebetween, with the combination of the air balancing baffles and tiered burner baffles forming a combustion chamber therebetween for reception and combustion of gas delivered from a gas manifold arranged approximately at the intake end of the burner assembly, with a shroud arranged above and below the upper and lower tier baffles for directing air into an intake at the back of the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and through the burner baffles, into the combustion chamber A diverter is arranged at the back end of the gas manifold for directing incoming air between the shroud and the upper and lower arranged tiered baffles, and deflectors are arranged at the upper front and lower front of the shrouds, to delay the passage of air into the path of the combusting gases, with the sides of the combustion chamber being flared outwardly, to minimize the development of combusting gas hot spots