Showing papers on "Diffuser (sewage) published in 1999"

Transparent substrate with diffuser surface

Abstract: A transparent substrate having a glare reducing diffuser surface coating on its outer surface forms a faceplate for attachment to a screen for a cathode ray tube or other display device. The coating has a preferred resolution of at least about 3 lines per millimeter, and the substrate may include an index matching adhesive/medium for attaching said faceplate to a cathode ray tube screen. The diffuser surface coated substrate is bendable and overcoatable with functional coatings such as transparent conductor and/or abrasion resistant coatings. Alternately, the diffuser surface coating may be applied over such functional coatings which are applied to the substrate.

Oxygenating apparatus, method for oxygenating a liquid therewith, and applications thereof

Abstract: An apparatus and process for oxygenating a liquid. The apparatus includes a liquid pump fluidly connected to an injector (74) having a liquid inlet (72) forming a nozzle, a liquid outlet (94) and an oxygen inlet (96) therebetween, the injector arranged such that the injector liquid inlet (72) is above the injector liquid outlet (94), and a downwardly opening first diffuser portion (100) connected to the injector outlet (94). The first diffuser portion (100) is serially connected to a second diffuser portion (102) located below the first diffuser portion. Liquid being pumped by the pump is conducted downwardly through the injector (74) and the first diffuser portion (100) to the second diffuser portion (102). The process includes the steps of first, introducing a liquid under pressure into the injector and flowing it liquid downwardly through the injector at a selected liquid volume flow rate; second, introducing oxygen into the injector to create an admixture of liquid and large oxygen bubbles, third, introducing the mixture of liquid and large oxygen bubbles from the injector into the first diffuser portion at such velocity to create the shockwave in the first diffuser portion; fourth, breaking up the large oxygen bubbles into a greater number of small oxygen bubbles; fifth, introducing a mixture of liquid and small oxygen bubbles from the first diffuser portion into the second diffuser portion, which may be a continuation of the first diffuser portion and wherein the presure of the admixture is increased; sixth, floating some of the bubbles upwards against the downward liquid flow and breaking them down to smaller size; continuing the fourth through sixth steps until the smaller bubbles no longer float upwards; and recovering the oxygen-enriched liquid.

Air bag device

Abstract: PROBLEM TO BE SOLVED: To prevent the loosening of a joined part between a diffuser and a housing SOLUTION: An air bag device is provided with a diffuser 12 for controlling the jetting-out of pressure gas, an air bag 10 inflated by the pressure gas controlling by the diffuser 12, and a housing 14 for housing the diffuser 12 and the air bag 10, an air bag attaching part 23 is provided between the diffuser 12 and the housing 14, and the diffuser 12 and the housing 14 are fixed by bolts 30 and 31 penetrating the attaching part 23 In this air bag 10 device, a relief hole having holes widened for the penetration of the bolts 30 and 31 is formed in the air bag attaching part 23, and the diffuser 12 and the housing 14 are fastened and fixed to each other by the bolts 30 and 31 while these are directly brought into surface-contact with each other by the relief hole

Cooling-air bore

Abstract: A cooling wall comprises an outer surface, which is exposed to a hot-gas flow, an inner surface, and at least one film-cooling hole within the wall, which film-cooling hole has a diffuser section and an outlet at the outer surface. The diffuser section has first and second internal surfaces, the intersection edge between the first internal surface and the outer surface forming an upstream edge of the outlet, and the intersection edge between the second internal surface and the outer surface forming a downstream edge of the outlet. The diffuser section has side surfaces, which faces one another, connect the first and second internal surfaces and diverge from one another toward the outlet of the diffuser section. The first internal surface of the diffuser section is rounded toward the axis of the film-cooling hole.

Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly

Abstract: A membrane separator assembly for separating solids from water includes opposing enclosure wall structures, a membrane module unit, and a gas diffuser disposed below the membrane module unit. The membrane module unit includes a plurality of membrane modules respectively having at least one separating membrane extending between at least two membrane fixing members. At least one of the membrane fixing members has a main passage which is in fluid communication with a membrane passageway. The membrane passageway is accessible to water via permeation through the separating membranes and is inaccessible to solids which are impermeable relative to the separating membranes. The membrane separator assembly is preferably used with a detergent containing percarbonate, preferably sodium percarbonate. The assembly also includes a gas diffuser with two opposing main pipes and branch pipes extending therebetween to avoid undesired pressure differentials when cleaning the assembly.

Method for producing shaped hole in a structure

Abstract: The present invention is a more efficient method for manufacturing shaped holes, which include a diffuser section and a cylindrical meter section. Unlike electro-discharge machining (EDM), which is the current method for manufacturing shaped holes, the method of the present invention laser drills the diffuser section followed by the cylindrical meter section. Laser drilling the cylindrical meter section creates the formation of re-solidified vapor in the diffuser section, which is easily milled. Recognizing that it is much easier to mill re-solidified vapor compared to the parent material, the present invention first creates the diffuser section and allows re-solidified vapor to form therein. Although the re-solidified vapor is thereafter milled, the entire process of the present invention is a more efficient method for producing shaped holes in comparison to EDM.

High-power carbon dioxide laser

Abstract: FIELD: quantum electronics, physics, pumped laser manufacture SUBSTANCE: double-module cross-discharge laser whose radiator is essentially closed gas dynamic circuit has gas- discharge channel, heat-transfer apparatus, pumping device, and intermediate connecting sections; section between front of electrodes and inlet to heat-transfer apparatus is made in the form of stepped diffuser with metal partition walls mounted in gradually expanding section of diffuser; electrode system , metal partition walls, and gradually expanding diffuser section walls are insulated from case EFFECT: improved power and specific power characteristics of laser 1 dwg

Method of producing a noncircular cooling bore

Abstract: In a method of forming a cooling bore in a wall of a workpiece, the configuration of a feed section and a diffuser section is selected, a throughbore is produced with a cross-sectional area within the cross-sectional area of the feed section, and the diffuser section is cut out by a beam- or jet-drilling method in such a way that the drilling beam or jet in the region of the feed section remains essentially within the cross-sectional area of the latter.

Aromatic diffuser with replaceable cartridge

Abstract: A diffuser for dispersing an aroma into a surrounding area includes a cartridge 100 having an aromatic substance dispersed in a wax carrier 102 The cartridge 100 includes a container 3 in which the wax carrier 102 is located and a cover 2 that includes a central vented tubular projection 27 The container is positioned in a heat conductive cup 6 and a heating element 7 is located below the cup 6 A fan 21 forces air past the cup 6 and aromatic vapors released when the wax carrier 102 is at least partially melted are entrained by the air currents and released through a vented dome 1 at the top of the diffuser An outer cylindrical housing 12 is used to mount the components When the heat is removed, the wax carrier solidifies, trapping the aromatic substance The cartridge vent 27 extends into the container 3 and the annular volume around the inwardly projecting vent is sufficient to provide space for the melted wax if the diffuser is upset

Monolithic ceramic gas diffuser for injecting gas into a molten metal bath

Abstract: A monolithic, fired ceramic gas diffuser for injecting gas into a molten metal bath, including a first portion, a second portion integrated with the first portion, and a bore passing through the first portion and communicating with the second portion for supplying gas to the second portion, wherein at least the second portion has a network of interconnected pores that provides preferential gas flow from the bore through the second portion to inject gas into the molten metal bath.

Spring-loaded vaned diffuser

Abstract: An annular vane diffuser (20) is disposed within a compressor housing (12) of a turbocharger (10) and employs a wave-type compression spring (34) interposed between the vane diffuser (20) and a backplate (24) to provide a desired pressure loading on the vane diffuser (20) to urge the vanes (26) against the wall of the compressor housing (12) forming one side of the diffuser (20). The vane diffuser (20) constructed in this manner maintains contact with the compressor housing (12) during turbocharger operation as it moves axially relative to the backplate (24) thereby providing improved diffuser efficiency.

Method and apparatus for denitrification of water

Abstract: Apparatus ( 10 ) for denitrification of a liquid, such as water, comprises a vertical processing tank ( 11 ) including: a bottom section ( 20 ) partially filled with activated sludge ( 22 ), bottom section ( 20 ) having a bottom ( 12 ) having a concave upward facing inner surface ( 13 ); a horizontal filter ( 40 ) spanning tank ( 11 ) above sludge ( 22 ); an anaerobic process section ( 50 ) including a denitrifying biomass section ( 54 ); and an oxidation section ( 60 ) including a diffuser ( 61 ). The method comprising the steps of: injecting impure water ( 90 ) into sludge ( 22 ) so as to travel helically upward to mix with sludge ( 22 ); filtering with filter ( 40 ); denitrifying with denitrifying biomass ( 54 ); and oxidizing the effluent water from anaerobic biomass ( 54 ) in oxidation section ( 60 ) including bubbling air from diffuser ( 63 ). Water ( 90 ) effluent from tank ( 11 ) is sterilized with an ozonation device ( 86 ).

Membrane separation system

Abstract: This invention provides a membrane separation system which offers easy installation and maintenance when applied to a large-scale sewage treatment tank, particularly. The membrane separation system includes one or more filter membrane module(s) immersed in a mixture to be filtered; one or more aeration diffuser(s) disposed below the filter membrane module(s); and a diffuser case with its upper and bottom open, containing the aeration diffuser(s) and bearing the filter membrane module(s) to guide aerated bubbles from the aeration diffuser(s) upward to the filter membrane module(s). The filter membrane module has an arrangement wherein plate-like filter membrane cartridges, each have its supporting plate surfaces covered with filter membranes, are arranged in vertical orientation with the filter membranes, in parallel and spaced relation, sequentially in the longitudinal direction of the treatment tank. Thereby upper end portions of the filter membrane cartridges, which ranging in the longitudinal direction of the treatment tank, define a maintenance passage for the filter membrane cartridges themselves.

Radiation source assembly and transducer for analyzing gases or other substances

Abstract: A radiation source assembly and transducer incorporating same are suitable for use in measuring spectral absorption properties of a substance to be analyzed, such as a gas The radiation source assembly has an optical axis A measuring radiation source provides radiation in the direction of the axis and a reference radiation source provides radiation in the direction of the axis An optical diffuser is spaced from the radiation sources along the axis Radiation from the measuring radiation source and radiation from the reference radiation source are applied to the diffuser and the diffuser forms an exiting radiation beam for the assembly from the radiation of the measuring radiation source and reference radiation source The operation of the radiation source assembly resembles that of a single-path photometer

Exhaust heat exchanger

Abstract: In a heat exchanger used especially as an exhaust heat exchanger, provision is made for tube sheets, the tubes of a tube bundle, and a housing to be shaped from stainless steel sheets. The tube sheets are formed as deep-drawn and stamped parts, each of which has a circumferential wall that projects outward beyond the ends of the tubes in the tube bundle. The walls are welded to the housing, and each of the walls is abutted by a diffuser.

Air conditioner for vehicle

Abstract: PROBLEM TO BE SOLVED: To prevent the reduction of blow-out air quantity when introducing primary air into an aspirator SOLUTION: This aspirator 39 is provided in the vicinity of an air mix chamber 32 of an air conditioning unit case 20 When air-conditioned air flows into a venturi tube 40 and is blown from a diffuser 40b, internal air is sucked into an outlet of a secondary air suction nozzle 41 via a hose 43 communicated with a storing case 37 of an internal air temperature sensor 36 by a venturi effect Air discharged from the diffuser 40b is returned to a suction port 26a of an air blower 25 without leakage by a connection pipe 44 As a result the reduction of air quantity blown into a cabin from blow-off ports 33a to 33c can be prevented The primary air is heat-exchanged air-conditioned air, and thereby cooling and heating performance in the air conditioning unit case 20 can be assisted by blowing the primary air by the air blower COPYRIGHT: (C)2008,JPO&INPIT

Water treatment equipment using immersion type membrane filtration device

Abstract: PROBLEM TO BE SOLVED: To successively perform membrane filtration treatment of raw water in an anaerobic vessel by providing a water treatment equipment with a reaction vessel into which raw water flows, an immersion type membrane filtration device immersed in the reaction vessel and an ultrasonic wave irradiation means for irradiating the inside of a liquid in the reaction vessel with ultrasonic waves. SOLUTION: This equipment is provided with: a reaction vessel 22 into which raw water flows through a raw water supply pipeline 21; an immersion type membrane filtration device 23 immersed inside the reaction vessel 22, wherein the membrane filtration device 23 consists of a membrane module having plural tubes of ceramic tubular filtration membrane and is connected to a suction pump 24 for applying a driving pressure to the membrane module through a liquid permeate suction pipeline 25 and an organic membrane can also be used for the membrane module; an air diffuser pipe 26 placed below the membrane filtration device 23 inside the reaction vessel 22; a blower 27 that is used for supplying air to the air diffuser pipe 26 and placed outside the reaction vessel 22; and an ultrasonic wave irradiation device 28 having an ultrasonic wave irradiation section 28a placed inside the reaction vessel 22, and an ultrasonic generator 28b that is used for transmitting ultrasonic waves to the ultrasonic wave irradiation section 28a through a waveguide and placed outside the reaction vessel 22.

Coated compressor diffuser

Abstract: A coating for a portion of the flowpath of a diffuser of a centrifugal compressor. The coating covers a portion of the diffuser against which flows high velocity air from the compressor blades. The coating is a smooth, tenacious, heat-resistant powder paint that reduces the aerodynamic drag of the diffuser walls on the high velocity air thus increasing the efficiency of the compressor.

Bottled water cooler with built-in oxygen generator and oxygen injection system

Abstract: A bottled water/tap water cooler and compact oxygen generator system (100) combined within a single housing structure (10). The oxygen generator (100) includes an air compressor (300) for generating compressed air having into dual molecular sieve beds (120, 130) one at a time. As a first molecular sieve bed (120) absorbs nitrogen, up to approximately 95 % pure oxygen is allowed to pass therethrough to a flow meter (50) and into a diffuser (30) which passes the oxygen into a purified drinking water reservoir (20) supplied by the bottled water or filtered tap water. After the first molecular sieve bed (120) is full, the second molecular sieve bed (130) activates and starts absorbing nitrogen while allowing oxygen to pass therethrough, simultaneously, nitrogen is vented from the first molecular sieve into the atmosphere. The first and second molecular sieve beds alternate with one another allowing the system to run continuously by using timer controlled dual 3-way valves (113, 115).

Ice lighting fixture

Abstract: The present invention relates to a lighting fixture that functionally provides a mold for creating a light diffuser from ice, a stand upon which to display the created light diffuser (including a shaped-surface support element to stabilize the light diffuser as it de-solidifies), a collection element to collect and contain the melted light diffuser material, and a support and containing system for a light source that, in use, is surrounded by the light diffuser.

APPARATUS FOR DETERMINATION OF pH, pCO2, HEMOGLOBIN AND HEMOGLOBIN OXYGEN SATURATION

Abstract: An apparatus for measuring molecular constituents comprising an optically transmissive housing (26), first and second light sources (36, 38), a detector (42, 44) for detecting the first and second wavelengths, and a diffuser (92) for providing the illuminating light with a broad angular dispersion.

Water treating device for attachment directly to a hydrant outlet

Abstract: Tap water supply systems are flushed by opening fire hydrants and running potable water through the fire hydrants for a period of time. Since potable water usually contains chlorine, it is necessary to remove the chlorine before the water enters rivers, streams and bays in order to protect aquatic life. This is accomplished by passing the water through a diffuser attached to the fire hydrant, which diffuser contains a mesh bag with a sodium sulfite tablet therein.

Air-bag arrangement

Abstract: An air-bag unit comprises a support plate (2) having an aperture (4) in it, and an air-bag (14) which also has an aperture (16) formed in it. A gas generator (7) has a radially outwardly extending flange (8) which is located so that a region (15) of the air-bag (14) surrounding the aperture (16) formed therein is trapped between the flange (8) and the support plate (2). A gas diffuser (10) is provided which, together with the flange (8) defines a diffusion chamber (18), the arrangement being such that in use of the device, gas from the gas generator (8) is injected into the diffusion chamber (18). A plurality of elongate connector elements (17) extend from a part of the gas diffuser (10) through the flange (8) and through the region (15) of the air-bag surrounding the aperture, also passing through apertures formed in the plate (2) so that the distance between the said portion of the diffuser (10) and the support plate is variable. In use, the diffuser (10) and flange (8) move apart and the air-bag is firmly gripped between the flange (8) and the plate (2).

High strength wastewater treatment system

Abstract: A high strength wastewater treatment system having a first tank with an inlet and an outlet, an aerator positioned within the first tank for passing oxygen into wastewater within the first tank, a second tank having a clarifier compartment positioned therein, an aeration device positioned in the second tank for passing oxygen into a liquid within the second tank, and a pipe connected to the first tank and the second tank for passing liquid from the second tank to the first tank. The second is interconnected to the outlet of the first tank. The second tank has an outlet extending from the clarifier compartment. In particular, the pipe has an end opening within the second tank and a diffuser connected to the pipe within the first tank. The diffuser is a venturi diffuser having a narrow section and a wide section. An air pump is connected to the venturi diffuser for injecting air into the narrow section. This delivery of air serves to draw liquid from the second tank through the pipe and into the first tank. The end of the pipe opens below the clarifier compartment in the second tank.

Heater for bending plastic pipe

Abstract: An apparatus for heating plastic pipe includes an outer housing having distal first and second open ends and a diffuser plate mounted inside of and spaced apart from the top of the outer housing. An inlet extending through the housing is positioned for directing heated air to impinge on the diffuser plate. A mount positions the diffuser plate within the housing such that when the plastic pipe is disposed in the housing through the open ends of the diffuser plate does not contact the pipe. First and second end caps are disposed at the distal first and second open ends respectively. The end caps have first and second apertures therethrough for supporting and centering the plastic pipe such that the diffuser plate does not contact the pipe.

Removal of cooling air on the suction side of a diffuser vane of a radial compressor stage of gas turbines

Abstract: The removal of cooling air from the diffuser part of a radial stage of a compressor of a gas turbine is provided. The end stage of the compressor has a radial rotor disk (2) with a bladed diffuser (3). With the corresponding fastening elements (7) for the parts (20.1, 20.2) on the diffuser housing side, the diffuser blading (3) is used at the same time to connect the vane support (1) to the rear bearing housing (21). Compressed cooling air can be removed through either/both round holes (6.1) or/and slots (6.2), which are milled on the suction side of the diffuser vane (3). Through the removal openings (6.1, 6.2), the cooling air enters the blind holes (19) of the diffuser vane (3) and then further, through holes (19.1) in the diffuser housing outside (20.2), the cooling air discharge (10) arranged in the compressor housing.

Dual diffuser assembly

Abstract: The dual diffuser assembly (10) of the present invention includes a first (23) and second (24) diffuser body in fluid communication with an air distribution pipe (14). The diffuser assembly (10) further includes a saddle (16) that connects the first diffuser body (23) and the second diffuser body (24) to the distribution pipe (14). The fluid received from the distribution pipe (14) passes into the first and second diffuser bodies (23, 24) and exits the first diffuser body (23) through a first diffuser (35) and exits the second diffuser body (24) through a second diffuser (36). The first and second diffusers (35, 36) form the air into fine bubbles that serve to facilitate aeration of the medium.

Hydrant flushing diffuser

Abstract: A hydrant flushing diffuser handles a flow of water from a hydrant as it is being flushed. The diffuser allows the flushing to take place in a safe manner and without destroying surrounding landscaping or other objects. The invention includes a hydrant flushing diffuser having a hood and a chute. The hood has a closed top and an open base and includes an aperture. The chute further comprises a porous fabric bag that is open on one end, wherein the chute is connected to the hood so that open end of the bag surrounds the aperture in the hood.