Abstract: A package boiler having water cooled surfaces positioned relatively close to the combustion burner to improve the radiant heat transfer. Extended surfaces are added to the water cooled tube fireside surface to increase absorption rates to the limits established by water side conditions to avoid departure from nucleate boiling (DNB). The heat release rates of multiple firing rate zone burners are matched to the absorption rates of the water cooled surfaces by adjusting the size and extent of the various firing rate zones. The burner is extended or the physical shape is altered to expose a larger surface to greater areas of water cooled furnace surface. The burner is matched to cooling surface to lower combustion zone temperatures and thus thermal NO.sub.X formations. Further, recirculated flue gas, excess air, water vapor or a combination of these may be used to add mass to the fluid stream flowing through the burner. Finally, either the gas fuel or combustion air may be staged.

Abstract: A boat for semiconductor wafers includes first, second and third support rods arranged between and connected to top and bottom plates. The first, second and third support rods include a plurality of first racks, a plurality of second racks, and a plurality of third racks, respectively, such that the racks of each rods are vertically arrayed with gaps therebetween. The first, second and third racks serving to define a plurality of horizontal wafer supporting levels. Each wafer supporting level is defined by only combination of the first, second and third racks of the corresponding height. In each wafer supporting level, the first and second racks are arranged substantially in symmetry with respect to an axis passing through the center of a wafer transfer port, and the third rack is arranged deviant from the axis by a certain distance corresponding to 5% to 48% of the diameter of the wafer.

Abstract: An adjustable louver system for controlling the direct thermal radiation reaching fluid tubes in a direct-fired heater. An angular position of louver blades of the louver system is adjusted by rotating first and second axles attached to the louver blades. The louver blades may be positioned manually or by an electric or pneumatic motor. A hand crank or knob located outside the heater manually turns the louver blades. The motor, which is also located outside the heater, is controllable by a temperature actuator. In some embodiments, the louver blades have pivot pins which fit into slots of a connecting plate. Rotation of one of the louver blade causes the connecting plate to rotate all of the louver blades simultaneously. In some embodiments, the louver blades are vertically positioned and the louver axles fit into holes in upper and lower guide plates. In other embodiments, the louvers are horizontally disposed and the louver axles fit into openings in the heater walls.

Abstract: An air shower apparatus of this invention includes an air shower room, a ring member provided within the air shower room and having a plurality of air blowing outlets for blowing clean air in a direction of a chamber entrant to remove dust particles, and a vertical drive unit for moving the ring member up and down in such a manner that clean air is blown towards the chamber entrant from head to toe. The plurality of air blowing outlets are arranged at prescribed intervals along the inner periphery surface of the ring member in such a manner as to surround the chamber entrant.

Abstract: This invention relates to a Hot Melt Glue Conveying System and in particular to a system for improving the material handling of thermoplastic adhesive chips to provide the uninterrupted flow of hot melt glue to packaging production lines. This invention reveals both a system and a method which improves the material handling efficiency and reduces the maintenance and down-time of a system for conveying solid glue chips or particles from a bulk source in the proper continuous glue volume to a glue melting apparatus. This system has filters at various points in the conveying system to screen the particle size of material flowing through and to minimize foreign particles in the system. This conveying system includes sensing devices that determine the material flow volume and vacuum at various gates, valves and hoppers in the system and sends an electronic signal to the control unit of those readings.

Abstract: An anti-sliding bar for furnace wall constructions of the type comprising: an open support structure wall and mat means of fibrous insulating material, including U,S,C or the like shaped sections interleaved to each other; anchoring means between the interleaved U,S,C or the like shaped sections, and tying means passing through the mat means, to hold the anchoring means attaching the mat means to the open support structure wall; the anti-sliding bar comprising: a rod supporting the mats, extending horizontally between the U, S,C or the like shaped sections, having: anti-sliding means, fastening tying means for supporting the bar to the mesh means.

Abstract: A walking beam furnace has in its interior fixed beams and walking beams for holding and transporting material to be annealed. These beams are provided with different support members for the material to be annealed, of which support members one serves for transporting flat material and the other for transporting round material. The different support members are arranged on the fixed and walking beams one after another in an alternating sequence.

Abstract: An exhaust treatment machine. The exhaust treatment machine has a burning chamber and a wet chamber. Water is injected into the wet chamber by a water inlet at a bottom portion of the wet chamber. At least two rotor blades are installed over the bottom of the wet chamber to generate a vortex flow of the water. Thus, the vortex flow of the water acentrically flushes away the product produced in the burning chamber and removes it via a drainpipe. Furthermore, those clots agglomerated from the powers produced in the burning chamber are fragmented by the rotor blades. The problems of blocking the drainpipe is thus resolved.

Abstract: An oven includes a housing provided with a device for supplying steam into the interior of the housing, in connection with the setting of a cooking condition, such as the temperature and/or relative humidity, and also a conveyor belt which passes through the housing and on which food products to be heated can be accommodated. The conveyor belt passes through at least one path with one or more windings disposed above one another. The device for supplying steam has at least one steam outlet for delivering steam at the level of the radially innermost part of a winding.

Abstract: A CFB reactor or combustor having an impact type primary particle separator collects solids particles from a flow of flue gas/solids and returns the collected particles along an inclined or substantially horizontal planar floor to a bottom portion of the reactor or combustor for subsequent recirculation.

Abstract: An exhaust system for a liquid processing tank including an exhaust conduit provided in a cover closing the tank. The exhaust conduit communicates with an exhaust system externally of the tank and has an inlet port that is closed by a portion of the cover that is movable to an open position to allow access into the tank. Fumes or vapors from the liquid in the tank are removed through the inlet port and exhaust conduit to an external exhaust duct by suction produced in the exhaust system. When the movable portion of the cover is moved to its closed position closing the tank to allow processing of the liquid in the tank, the inlet port in the exhaust conduit is closed by the movable cover portion.

Abstract: A washer for the flueways of a boiler which has an adjustable collar that is inserted between the boiler hood and the exhaust pipe. The collar has an opening through which a spray nozzle is inserted. The spray nozzle is connect to a hot water supply, and has a low voltage solenoid valve which can be connected to a thermostat to turn on and off the supply of hot water as needed.

Abstract: A manifold connects three boiler circuits and a heat exchanger circuit and an indirect cylinder heated exchanger circuit of a central heating system together. The manifold comprises a container which defines a hollow interior region which is divided by a horizontally extending partition plate into an upper flow water region and a lower return water region. First ports are provided for connecting flow pipes of the circuits into the flow water region of the manifold and second ports are provided for connecting the return pipes of the circuits into the return water region of the manifold. A communicating opening and apertures in the partition plate communicate the flow and return water regions. The partition plate stratifies the water within the hollow interior region so that the hottest flow water is above while the cooler return water is below the partition plate.

Abstract: A housing for a television receiver satellite dish has a roof and side walls which form a structure which is attached to the roof of a building. The structure accommodates a television receiver satellite dish. The side walls are made of a radio-frequency transparent material so that reception of the television receiver is not impaired. The structure is further designed to fit over a roof ventilating fan, and has openings in its side walls to allow vented air to escape. The device provides an attractive housing which protects the television receiver satellite dish, and provides roof and attic ventilation for the building.

Abstract: A duckbill valve is provided which includes a hollow cylindrical elastomeric body with first and second ends. The first end has walls parabolically tapering to an elongate slit, the slit being surrounded by an upper and lower lip. The second end has a non-uniformly round (e.g. oval) outer wall terminating in an open mouth. When inserted into a perfectly round apertured fitting, the non-uniformly round outer walled elastomeric body is bowed to form-fit the round configuration thereby forcing shut the lips and slit. Upon increased air pressure within the elastomeric body, the slit is forced open. In a second embodiment, the inner wall of the second end may be non-uniformly (e.g. oval) round. Insertion of a round tubular fitting within the non-round inner wall of the elastomeric body also achieves a bowed form-fit configuration which forces shut the lips and slit.

Abstract: The invention relates to an arrangement for a drying section of a paper machine, the arrangement comprising a fine wire (5a) and a coarse wire (5b) that are arranged to pass between metal bands (2, 3) of a band dryer (1) together with a web (4) to be dried. The coarse wire (5b) comprises a fine texture (5d) to be placed against the cooled metal band (3). Further, against the fine-textured section (5d) placed against the cooled metal band (3) there is a coarse texture (5c).

Abstract: A facility for reclaiming useful products from solid municipal and hazardous waste uses a rotary kiln to convert the material into a stream of inorganic ash and a stream of gaseous combustion products. The stream of combustion products passes in heat exchange relation to unburned waste and produces a stream of volatile carbon compounds which are deficient in oxygen. The streams of combustion products and volatile carbon compounds are converted in a plasma arc generator into a stream of hot, disassociated atoms. The stream of hot gas is cooled by passage through one or more heat exchangers that reclaim process heat. The stable compounds that are produced are hydrogen and carbon monoxide. The process is controlled by monitoring carbon dioxide in the carbon monoxide stream. The carbon monoxide and hydrogen may be used separately or combined, as in a methanol synthesis plant.

Abstract: A check valve (10) including a valve disk (12), wherein the valve disk (12) is so arranged and configured as to be of a thickness sufficiently substantial to prevent the valve disk (12) from exhibiting a significant amount of flexure even under high reverse pressure, an upper housing portion (16) having an inlet aperture (18) formed therein, a lower housing portion (20) having an outlet portion (22) formed therein, the upper housing portion (16) being formed with a valve seat (24) which protrudes towards the lower housing portion (20) by a preselected distance, the inlet aperture (18) extending through the valve seat (24), a static seal ring (26) for installation between the upper (16) and lower (20) housing portions in sealing fashion, the static seal ring (26) being located circumferentially around and spaced away from the valve disk (12), and a support web (32) extending between the static seal ring (26) and the valve disk (12) for supporting the valve disk (12) from the static seal ring (26), the support

Abstract: A flow meter, such as is used in warm water heating systems, has a measuring element (2) with a flow-responsive element and a display element (3) with a transparent inspection glass or tube (10) with a bore in which an an end of an indicator rod (6) moves. The indicator rod is part of, or is coupled to, the flow-responsive element and it has a pointer (8) near the end inside the inspection tube. The inspection tube preferably has no markings: instead, around the inspection tube is a scale support (16) with scale markings calibrated to the positions of the pointer (8) to show the amount of flow. The scale support is essentially sleeves-shaped, with a lateral cutout (18) which permits the user to view the pointer inside the inspection tube. The scale markings may be on cut surfaces (20) adjoining the lateral cutout.

Abstract: A drain system includes a drainpipe and a valve. The valve includes a first and second body and a counterweight assembly. The first body has a passage formed therethrough and is fluidically coupled to the drainpipe. The second body is pivotally coupled to the first body and is moveable between a first generally sealed position and a second unsealed position relative to the drainpipe. The second body has a top surface adapted to receive waste fluid thereon. The counterweight assembly is coupled to the second body and is positioned to produce a force urging the second body toward the first position. The second body is free to pivot toward the second unsealed position in response to the weight of the waste fluid exceeding the force applied by the counterweight assembly.