Abstract: High temperature thermal exchange between molten liquid and a gas stream is effected by generating in a confined flow passageway a plurality of droplets of molten liquid and by passing a gas stream through the passageway in heat exchange relationship with the droplets. The droplets are recovered and adjusted to a predetermined temperature by means of thermal exchange with an external source for recycle. The process provides for removal of undesired solid, liquid or gaseous components.

Abstract: An apparatus for filtering, washing and cooling gases, wherein gas is forced through a foraminous wall extending across a chamber and water is sprayed across the chamber on the upstream side of the wall to filter, wash and cool the gas, employs as the water sprayer a rotating disc bearing projections which scoop up relatively large amounts of liquid and cast it against an atomizing member. The impact of the liquid on the atomizing member breaks the liquid into small droplets and produces a uniform spray.

Abstract: An air-cleaning, heat-exchange apparatus includes a main housing portion connected by means of an air inlet fan to the kitchen exhaust stack of a restaurant. The apparatus includes a plurality of heat exchangers through which a heat-absorptive fluid is circulated, simultaneously, by means of a suitable fluid pump. These heat exchangers absorb heat from the hot exhaust gas, out of the exhaust stack of the restaurant, which flows over and through these heat exchangers and transfers this heat to the circulating fluid which communicates with remote heat exchangers. These remote heat exchangers further transfer this heat to a stream of air, such as that from a cold-air return duct for supplementing the conventional heating system of the restaurant. Due to the fact that such hot exhaust gas is heavily grease laden, grease will be deposited on virtually all internal surfaces of the apparatus which this exhaust gas contacts.

Abstract: The invention relates to an aerating device for sewage and comprises a drum-like rotor which rotates in a trough and is divided, by axially-parallel partitions, into a plurality of outwardly-open radial chambers, the said partitions being equipped with peripheral outer surfaces having apertures so that during rotation of the drum a volume of air is trapped in each chamber. Internal baffels in said chambers act to direct the trapped air initially to the lagging portion of the chamber and then, past bottom dead center, to the leading portion of the chamber, thereby efficiently aerating the sewage.

Abstract: A humidifier unit with a water supply reservoir, a media unit which passes through the reservoir and picks up moisture, a motor and fan unit together with drive mechanism for rotating the media unit and for blowing air through the media unit and into the surrounding area, and a removable, refillable liquid water treatment dispenser. As depicted, the humidifier is a console room humidifier with the water reservoir accessible from the rear. The removable dispenser is an auxiliary unit consisting of an elongate bottle, the cap of which carries a spring biased poppet valve with a projecting stem. The bottle is inverted and received through an opening in the top wall of the humidifier with its valve operating stem resting on an abutment above a flow passage funnel unit mounted on structure within the humidifier above the water reservoir.

Abstract: A centrifugal rotating disc assembly for a biological waste water treatment apparatus includes a plurality of dual discs rotatively driven while their lower halves are immersed in waste water to be biologically treated.According to the invention the disc assembly comprises suction openings in plates of the dual discs, suction chambers in the proximity thereof, a number of radially outwardly extending pleats formed in the plates to form a number of radial polygonal tubular channels and communicating passageways circumferentially across the radial polygonal tubular channels, thereby improving the permeability of the waste water through the assembly and facilitating the discharge of the waste water to achieve a remarkably high purification efficiency.

Abstract: An improvement for the aeration of the water and combining the aeration with the cleansing of the water by a biological cover, in which one or several circular disks rotate in a clarifying reservoir about a horizontal shaft. These carry at their circumference annularly bent funnels which extend in part above the water surface and continuously converge in direction from the inlet opening to the outlet opening. Above the water surface air enters through the inlet opening into the funnel and below the water surface water enters into it. Because the funnel converges continuously, both water and air are accelerated and compressed in the funnel. The compression assures that the amount of oxygen which is soluble in the water and can be accepted by the same from the air, is substantially increased. The biological cover forms on the disks and on the outer surface of the funnel.

Abstract: An evaporative cooling system includes a belt of a material to which a liquid may cling and which is sufficiently transparent to the flow of air therethrough to achieve evaporation of the liquid on the belt by the air. A portion of the belt dips into a reservoir of water. Air is propelled through the belt and the belt is moved through the water. A float valve is responsive to the level of water in the reservoir for maintaining that level upon receipt of an input flow of the water. A separate sump contains a reserve supply of the water. A pump is operated along with operation to move the belt for supplying liquid from the sump through the float to the reservoir.

Abstract: The invention relates to a mechanico-biological waste water purifying plant. The plant has a trough and at least one partially immersible rotatable body arranged therein, the body having a stack of discs which are partially immersed in waste water in the trough and a shaft projecting at its end beyond the stack of discs. The ends of the shaft are supported rotatably in the bearings which have at least two bearing rollers upon which the ends of the shaft are positioned so as to be liftable upwards freely therefrom.

Abstract: The specification describes an improved humidifier pad and a method of making the pad. The pad comprises a fibrous layer provided with means which substantially eliminate the flow of water picked up by the fibrous layer along the length of the pad so that when the pad is in use on a rotating drum, the water that is picked up is held in the pad for vaporization rather than flowing back downwardly to the pickup point.

Abstract: Disclosed is a self-contained evaporator type humidifier adapted to be positioned at an outlet opening of a warm air heating system and operated solely by an air stream issuing therefrom. The humidifier includes a housing provided with an air inlet opening and an exhaust air grill. A water receptacle, an adjustable water supply means, and an adjustable air-water contacting member are provided within the housing. The air-water contact member comprises a frame having a water-absorbent covering thereon and has an overall shape which is approximately that of a propeller which has been twisted at the midpoint of its longitudinal axis so that the end portions which are substantially in the shape of an elongated S, lie in planes which are generally perpendicular to each other. The air-water contact member is mounted for free rotation in journals at each end of the interior of the housing and is rotated around its longitudinal axis by the direct impingment thereon of the air stream from the heating system.

Abstract: A humidifier assembly comprising a housing that is open at the rear for slidable insertion of a frame carrying a motor driven endless porous water pickup pad and a bottom mounted water reservoir pan. When the housing is mounted on a plenum or the like these and other components within the housing are not accessible for removal from the housing. A special sheet metal subassembly mounts the pad and its supporting rollers and a motor for driving one of the rollers.

Abstract: A rotor film mass and heat exchanger comprises a casing of a circular cross section with liquid and gas inlet pipe connections at one end and with liquid and gas outlet pipe connections at the other. Installed coaxially and rotatably in the casing is a shaft carrying reflux stages which are formed by bands bent as spirals diverging from said shaft and flanged towards the latter.

Abstract: A water-impervious liner for use in a humidifier having a rotatable drum provided with an evaporator medium and a liquid-holding chamber through which the drum is rotated, said liner being conformed to the shape of the chamber. In one of the embodiments having a single liner, the liner is divided into two chambers by means of a dividing wall having an aperture for the flow of liquid between the chambers. According to an embodiment having a plurality of liners, there is provided a water-impervious liner assembly for use in a humidifier having at least two chambers for holding liquid, wherein the humidifier liner assembly includes a first and a second water-impervious liner and a conduit means interconnecting the two chambers, and the conduit means is attached to the first liner and to the second liner in a watertight manner.

Abstract: The rotary drum humidifier is mounted in an opening in the horizontal supply duct of a forced warm air furnace. The humidifier has a built-in manual humidity control wherein an adjustable thermostat is connected in series in the electrical humidifier motor circuit. The thermostat completes the electrical circuit on rising temperature in the duct and senses the peaks and valleys of the modulating duct temperature caused by the furnace heating cycle. When the control knob of the thermostat is set on "high", the humidifier will operate at a greater percentage of the furnace heating cycle and when set on "low" the humidifier will operate at a lesser percentage of the furnace heating cycle.

Abstract: The rotary drum humidifier is mounted in an opening in the horizontal supply duct of a forced warm air furnace. An annular mounting bracket surrounds the opening on the inside of the duct and has a plurality of spaced apart mounting studs extending through holes provided in the wall and surrounding the opening. The humidifier includes a housing having a bottom wall and upstanding side walls forming a water reservoir, with the side walls being provided with horizontally extending mounting flanges having apertures for receiving the studs which are then provided with nuts. A cylindrical porous drum, motor driven, is rotatably mounted in the housing and is adapted to be wetted by the water in the reservoir. Hinge means are provided along one flange of the housing through which a pair of adjacent mounting studs extend.

Abstract: The foaming tendencies of continuous liquid-solid reactions which evolve gas are reduced by subjecting the reactant stream simultaneously to non-turbulent flow through an enclosed conduit having a vapor space above the flowing stream and to mild agitation to increase the liquid-solid and gas-liquid interface areas.

Abstract: An improved liquid aerating rotor assembly comprises a support frame having a rotor mounted for rotation about a horizontal axis. A plurality of floats support the rotor and support frame on the surface of a sewage pond or the like. A V-shaped deflecting plow or V-shaped front float is located upstream of the rotor. This configuration causes the upstream surface layer of liquid to pass around the rotor. This prevents any solid debris located in the surface layer of liquid from jamming the rotor and allows more complete aeration of sub-surface liquid. Alternatively, a scoop may replace the V-shaped deflecting members.

Abstract: A rotor for a gas-liquid heat exchange device that comprises a plurality of spaced heat absorbent elements mounted on a rotary shaft. The shaft is adapted to be rotated continuously between a hot liquid and a cool gas in order that heat contained in the hot liquid is first absorbed by the elements and then, as the elements rotate, the heat of the elements is transferred to the cooler gas for dissipation into the surrounding air.

Abstract: Process for sewage treatment by the travelling contact filter method. Buoyant filter media made of synthetic resin material are filled in a sewage tank and agitated by means of an agitating means to bring them into close contact with the sewage and air. Various forms of filter media and agitating means are proposed.

Abstract: There is disclosed a rotating trickling filter formed from an elongated, hollow, circular cylindrical shell in which fixed film contactor media is mounted. Wastewater is introduced through an inlet at one end of the shell and exits through an outlet at the opposite end. The volume of wastewater within the shell is maintained as a small fraction of the total volume within the shell and collects as a shallow pool of wastewater at the bottom of the shell. Longitudinal channels sweep through the pool of wastewater as the shell is rotated to raise wastewater and discharge it over the media, which also rotates with the shell. In one embodiment the shell is cradled on belts, one of which is driven to rotate the shell. In another embodiment, the shell is mounted within a holding tank of wastewater and is driven by the release of gas under pressure from a conduit disposed beneath the shell, with the gas being trapped in cups arranged about the perimeter of the shell.

Abstract: A rotating disc-type biological waste water treatment apparatus comprises rotating disc assemblies rotatively driven while their lower halves are immersed in waste water. This rotating disc assemblies include a plurality of impellers, each comprises two parallel discs fixed to a main shaft, one of the discs being formed at its center with a suction opening, and impeller blades radial to the main shaft between the two discs, thereby increasing the surface areas of the rotating disc assemblies without increasing the driving power. Besides, only by closing the outer peripheries of the two discs the apparatus can perform the anaerobic denitrification.According to the invention the impeller is divided into a plurality of sectors consisting of two sector side plates and two impeller blades which are integrally formed by blow molding and then arranged side by side to form a sector block. Thus produced sector blocks are then arranged about the main shaft and fixed thereto to form a rotating disc assembly.

Abstract: This invention introduces a process and apparatuses for bringing a gas phase into contact with a liquid phase for an extended period of time and subjecting the phases to appropriate motions so as to accomplish efficient absorption and desorption operations and efficient pressurization and depressurization operations. The process is conducted in a processing system that comprises of many small compartments and a moving mechanism to which the compartments are attached. Each compartment has a confining wall to contain a mass of the feed gas and has an opening through which a liquid may be brought in contact with the gas to provide a gas-liquid interface. The processing system is submerged in the liquid phase and is divided into a first zone and a second zone; the compartments in the two zones are respectively subjected to a downward movement and an upward movement.

Abstract: Apparatus for treating sewage by providing a plurality of uniquely designed thin discs that are mounted on a shaft so that the discs are immersed approximately 40% in a sewage tank. The shaft is rotated at peripheral speeds on the order of 35-75 feet per minute to alternately expose the discs to the atmosphere and the liquid containing wastewater in the tank to treat the wastewater in the tank by providing for the growth of biological slimes on the surfaces of the discs. The discs have a corrugated configuration with the corrugations of the alternate discs disposed at ninety degrees to each other to provide maximum usable surface area in a given rotating volume while having sufficient clearance to permit unobstructive sloughing of growths.

Abstract: Apparatus is described for the continuous removal of particulate matter from a gas stream using a filter medium. In the improved apparatus of this invention particulate laden air passes through a filter medium depositing the particulate on the solid members of the medium. Wash liquid is used to flush the particulate matter off of and/or through the filter for collection. The improved apparatus comprises a cleanable filter medium carried on a previous support, liquid supply means for providing wash liquid to clean the filter medium, motive means to cause relative motion between the support (and filter medium carried thereon) and the liquid supply means such that the wash liquid can impinge on a given portion of the filter medium from different directions over a period of time, and means for collecting and removing medium. Essentially all the particle laden water which is entrained in the gas stream is separated by use of mist eliminators or similar devices.

Abstract: The invention described herein relates to a liquid spraying device capable of producing minuscule particles of liquid in a uniform pattern by having a thin material movably mounted for causing it to be continuously conveyed through a liquid, the material further having openings in its surface, by way in which constructed or processed, for transporting the liquid in film form. As the material emerges from this liquid, its surface being of such characteristics by shape and size of the openings and the material from which formed that, stressed free liquid films are caused to form in the openings thereof. Under certain conditions surface film will appear on the surface of the material which prevents the formation of free films. Means are therefore provided for removing this unwanted surface film in such a way that free films are caused to form in the openings of the affected portion.

Abstract: In a portable domestic air humidifier of the rotating drum type, the improvement wherein a fill funnel occupies a portion of the periphery of the drum.

Abstract: A humidifier having an outer housing with a top opening covered with a removable top member. A power chassis and a rotatable drum having a web of water absorbent material about its circumference are mounted within the housing and are each removable through the top opening. A removable water container is located within the housing below the drum. The container is readily cleaned or replaced by lifting it out of the housing through the top opening.

Abstract: A rotor for biological treatment apparatus, a plurality of cylindrical shaped waste water treatment modules on the shaft in closely spaced end-to-end relation with each other, each module including a convolute of sheet plastic spirally wound in a plurality of turns separated by cup-shaped recesses or irregularities welded to the next adjacent turn in the convolute and defining flow channels extending endwise through the cylindrical module and circumferentially thereof between adjacent turns of the convolute.

Abstract: A drive system in a humidifier of the portable console type having a large drum or media wheel rotatable on a horizontal axis through a water reservoir and a fan providing air flow through the media wheel, the drive system including a high speed reduction belt and pulley system interconnecting the fan motor and the media wheel.

Abstract: Apparatus in an air conditioning unit to provide for circulation of evaporator condensate preventing the formation of pockets of cold condensate which cause exterior condensation on the unit, the apparatus comprising a reservoir area for the collection of condensate, a condenser fan shroud dividing the reservoir into two parts and sluiceways within the shroud defining a path for circulation of the condensate communicating with the reservoir, and a powered rotatable fan which creates air pressure differentials which cause the condensate in the reservoir to circulate.

Abstract: An apparatus for the fermentative conversion of a nutrient mixture by means of microorganisms in the presence of a gas containing oxygen. The nutrient mixture and gas are mixed to yield a phase state with a relative density of less than 0.3 referred to water. The process is carried out in a closed reaction vessel having inlet and outlet pipes for the nutrient mixture, its components and the product. The vessel is also provided with inlet and outlet pipes for the oxygen-bearing gas. A paddle wheel within the vessel provides the distribution device.

Abstract: Tank for agitation and aeration of municipal and industrial wastes. In a simple manner, turbine-type aerators are installed along the longitudinal axis of a tank, between which partitions (e.g. "(2)") are arranged, dividing the tank into at least two connected ditches. In these ditches aerating brushes or mammoth rotors (e.g. "(2)") are installed. In a multi-ditch system the tank is (e.g. "(2)") divided into several ditches. At joints of the partitions (e.g. "(2)") or in these partitions themselves, recesses (4) are made that reach below the level of the liquid, in which the turbine-type aerators (e.g. "(2)") are installed.

Abstract: A versatile by-pass humidifier assembly utilizes the flow of air therethrough as the driving force to rotate a fluid carrier subassembly, but may also be adapted for use with an electric motor as the driving force. The water carrier subassembly has a unique "drop-in" design which permits easy removal and replacement, all without the use of tools or fasteners. Similarly, the fluid reservoir is removable for maintenance and cleaning and the cover is removable for access to the humidifier assembly interior, both being removable and replaceable without the use of tools or fasteners of any sort.

Abstract: A method of and apparatus for purifying gases, especially industrial waste ases, according to which a solid surface layer adapted to adsorb impurifications is formed on rotatable discs of which successive portions during the rotation of the discs temporarily protrude from a liquid containing container. This layer, when being contacted by the gas to be purified, adsorbs the impurifications and harmful substances of the gas. The exhausted portion of the surface layer is replaced successively by a new surface layer portion formed by wetting the disc portions when the latter pass through the liquid in the container.

Abstract: An air humidifier for adding moisture to air by aspiration. The humidifier contains a fan surrounded by a shroud having an aspirator duct near its bottom on its low pressure side. The fan draws small droplets of water from a water reservoir disposed beneath the aspirator duct into the flow of air created by the fan. The air flow then passes through an evaporative filter wherein the water is dispersed and evaporated into the air flow and mineral content of the water is substantially filtered from the air flow.

Abstract: A rotary multitube biocontactor has a plurality of tubes of a predetermined length and diameter. The tubes are bundled in a pillar like form and are connected with each other and with an axle at the sectional center thereof by means of welding or the like. The plurality of tubes are at angles to the axle, the axle being mounted in bearings provided on a trough at the top of two sidewalls thereof so as to enable the axle to be located close to the surface of water contained in the trough. The axle is rotated by a motor connected thereto thereby rotating the multitube biocontactor so that the tubes move in and out of the water contained in the trough.

Abstract: An apparatus for purification of waste water in a tank or a pool has a housing rotatably journalled on a raft and provided with pump means to force air and water therethrough. The housing contains first discs having central holes and a second discs having peripherical apertures at the wall of the housing. Each disc forms a baffle for air and water flows through the housing, thereby imparting a tortuous path to the air and water passing through the housing. The discs are corrugated and are arranged in a stack with the corrugations of adjacent discs oriented at right angles. The corrugations strengthen the discs and form support points at which the discs contact each other, and also define channels between the discs, through which channels of water and air can flow. A spiral pump rotating with the inlet end of the rotor forces metered volumes of water and air through the rotor.

Abstract: An apparatus for the biological treatment of waste water comprises a tank having a plurality of overlapped revolvable, partially submerged, circular discs positioned in the tank. The waste water is caused to flow longitudinally through the tank and along the surfaces of the revolving disc, whereby the waste water will be continuously treated by the aerobic bacteria growing on the surfaces of the discs. The tank is preferably provided with a cover or housed in a building for covering those portions of the biological disc which project above the surface of the water.

Abstract: A rotary apparatus which is adapted to bring at least two media of different density into alternate contact with the apparatus surfaces, preferably for the purification of one medium, is formed by a body which is closed except for ingress and egress apertures and which has means for causing the body to rotate. In the interior the body has contact surfaces for the media. The contact surfaces are so arranged in the body that at least the medium having the greatest density is advanced therethrough at the rotation. The rotary body is a body having buoyancy of its own and is directly supported in the media of greater density inasmuch as it is adapted to rotate supported by these media and automatically to adjust itself to the levels thereof.

Abstract: A portable humidifier having readily separable water container and decorative case components, where the container is caster supported for easy mobility and where the case has side walls defining an open bottom interior larger than the container suited to fit vertically over the container thereby virtually hiding same and then be removably supported in place thereon, optionally even with no mechanism latch connection thereto, and humidifying mechanism supported by the case operable to vaporize container water for discharge to the ambient atmosphere.

Abstract: A humidifier pad is disclosed which comprises a body portion having opposing surfaces. In the body portion there are a plurality of openings which allow communication between one of the surfaces to another of the surfaces. A pluality of projections extend from at least one of the surfaces. The pad may be formed in the shape of a drum wherein the drum comprises one or more pads placed within one another. Flexible plastic material which resists hydrolytic aging may be used in the manufacture of the pad to provide the consumer with a long-lasting easily maintained unit.

Abstract: A large scale liquid cooling assembly has two stages for air cooling of hot liquid. Each stage has a plurality of liquid spray units for selective controlled projection of liquid drops in at least one trajectory extending generally perpendicular from its unit and in a common horizontal direction therefrom. The drop sizes, velocities and volume rates of the liquid spraying are adapted to provide a directional wind effect across the unit along the common horizontal direction. The water can be initially cooled in the first stage, and subsequently further cooled in the second stage. At least some of the units of the second stage are adjacent some of the units of the first stage, and create directional wind effects complementary to the directional wind effect of the first stage.The alignment of the liquid spray units in the two stages can take several different forms.

Abstract: An immersion percolating filter arrangement for biologically purifying sewage effluent which is provided with growth accumulation surfaces adapted to be slowly rotated about an axis of rotation whereby the surfaces are alternately immersed in the sewage effluent and removed therefrom so as to enrich the biological growth accumulated thereon with oxygen. The growth accumulation surfaces are formed from a flexible material which are suspended under tension in planes parallel to one another within a roller cage support structure having end faces which are substantially circular. The end faces of the roller cage support structure are each provided with a bearing arrangement for permitting the rotation of the support structure about the axis of rotation with one of the bearing arrangements being connected to a suitable driving source.

Abstract: A rotary aerator is mounted for rotation about a horizontal axis and has a plurality of agitator elements formed integrally with hub segments to provide generally star-shaped members which extend radially from the circumference of the aerator along the length thereof for introducing air or other gases into waste water or other fluids.

Abstract: An apparatus for establishing contact between a liquid and a gas comprising a cylindrical container which is arranged to rotate about its axis and has at least the circumferential wall perforated so that the liquid and the gas can flow therethrough, and which is packed with filling bodies.

Abstract: An apparatus for filtering, washing and cooling gases including a chamber having inlet ducting and outlet ducting. Gases conducted through the inlet ducting into the chamber are cleaned and cooled therein and removed through the outlet ducting. Within the chamber is a convoluted foraminous wall extending transverse to the direction of gas flow to maximize the area where water droplets will impinge and vaporize. Some means such as a fan is used to force the gas through the foraminous wall. A pool of water stands in the bottom of the chamber between the inlet ducting and foraminous wall and a curtain of said water is sprayed from said pool by means of rotating discs and directional control mechanisms, whereby gas entering the chamber passes through the water curtain and is cleaned and cooled.

Abstract: A slinger device for use in a humidifier liquid dispersion system includes blades having a main sloping section tilted in two planes relative to the rotational axis of the assembly and provided with flange means substantially co-extensive with at least one side edge whereby the outer edge of the flange means extends a constant distance from the axis of rotation.