Abstract: An evaporative cooler having a one-piece, frameless shell secured to a bottom pan and having a top cover hinged along one edge to the side wall of the housing shell. A quick-release latching mechanism secures the top cover to the opposite side wall to hold the top cover closed while permitting the top cover to be easily opened for access to components of the evaporative cooler housed therein. Evaporative media pad assemblies have side frame members having V-shaped outer surfaces which slide in correspondingly shaped tracks in the corners of the shell to space the pad assemblies from the louvered side walls of the shell and permit the pad assemblies to be installed and removed from above with a vertical sliding movement.

Abstract: An apparatus for treatment of waste water in a body such as a lagoon in which a submerged aeration device is suspended from a floating platform. Air is supplied to the aeration device by a conduit passing through the buoyant base of the platform to a central opening so that the conduit is an integral, structural part of the platform.

Abstract: A counterflow evaporative heat exchanger comprises a vertical conduit in which a coil assembly is positioned. A fluid to be cooled or condensed passes through the coil assembly while water is sprayed downwardly over it and air is blown upwardly through it. The coil assembly comprises a plurality of tubes which at each level in the assembly are spaced apart from each other in the horizontal direction by an amount greater than the diameter of the tubes. This has been found to improve heat transfer in comparison to counterflow evaporative heat exchangers using closely packed coil assemblies.

Abstract: A ventilation and air conditioning apparatus operating according to the adiabatic evaporation principle and adapted to be fitted under a roof, the apparatus comprising a prismatic housing of which the bottom portion consists of an annular water-filled tank having in its central portion an upstanding frustoconical element having a vertical axis of which the vertex angle is at least 30 degrees. The major base of the element is connected in an air-tight manner to the tank, the minor base of this frustoconical element being disposed at the top and closed, and receives through it the vertical shaft of an electric motor driving a helical fan provided with relatively large blades rotating at a relatively slow speed and adapted to draw in air through a shaft of which at least the lower section is vertical and opens into the upper portion of the housing, while the upper section of this shaft opens into the external atmosphere.

Abstract: The invention relates to a system for treating liquid such as aqueous liquor with a gas that is sparingly soluble therein by introducing the gas into a pressurized stream of the liquid at a sufficient rate to dissolve some of the gas in the stream and additionally to form finely dispersed bubbles of undissolved gas which are carried within the stream. The velocity of the stream is sufficiently high to ensure that the bubbles do not combine to form a discrete vapor phase. The stream is introduced into a volume of the liquid under turbulent conditions so that the bubbles of undissolved gas are broken into even finer bubbles which either dissolve or are consumed in the liquid volume.

Abstract: An apparatus and method for scrubbing or removing ammonia fumes by passing the ammonia vapor through a shower of ammonia-absorbent liquid such as water in a chamber are disclosed in this invention. The ammonia vapors are absorbed by and enter into solution with the liquid, the clean air is discharged into the atmosphere, and the solution of ammonia and liquid is disposed of in an appropriate manner. Preferably, a portion of the solution is recirculated to absorb additional ammonia in the chamber while the balance is discharged; and fresh make-up liquid is added to prevent the solution from becoming fully saturated with ammonia or from losing its effectiveness in the scrubbing process. The apparatus includes a cabinet, air transfer means, a shower chamber and means for producing a dense shower of liquid droplets, liquid circulator and discharge means and control mechanism to maintain absorbent liquid within the system.

Abstract: A method of aerating slurry involves the use of a screw conveyor operating in a tubular casing having an inlet and an outlet. The inlet has access to the air above the level of the slurry so that as the conveyor is rotated air is admitted through the inlet and discharged at the outlet, which is below the surface level, into the body of the slurry. The screw conveyor may be in two portions of opposite hand so that one portion discharges air and the other portion discharges slurry at a common outlet intermediate the two ends of the casing.

Abstract: An evaporator type humidifier in which a fan wheel is rotated by an air stream and drives a water wheel. The water wheel lifts water from a water receptacle to a water distribution system. The water distribution system can collect water and then distribute a substantially equal amount of water to each air-water contact member in the humidifier. The amount of water distributed to each contact member is sufficient to wet the contact member and inhibit the formation of deposits on the contact member by flushing away minerals and other solid particles.

Abstract: An apparatus for introducing air into a liquid including an aerator housing having inner and outer walls defining an inner pressure chamber and an outer air chamber with jet nozzles being carried by the inner walls and opening radially outwardly for directing liquid jets from the pressure chamber through the air chamber, catching nozzles carried by the outer wall and opening outwardly therefrom in alignment with the jet nozzles for receiving a combined liquid and air flow therefrom, a driven liquid pump in the pressure chamber and a compressed air generator driven by a motor and carried thereby, and an air conduit leading from the compressed air generator into the air chamber.

Abstract: A device for mixing liquids and gases comprising a fan stage above and connected to a distribution stage. The fan stage comprises a plate with blades and a central aperture. The distribution stage comprises a plate, preferably concave with the concavity facing upwards, having a central aperture which is disposed just above or at the level of the liquid. A motor spins both stages. A pipe may be extended from the aperture of the distribution stage down into the liquid.

Abstract: An apparatus for generating bubbles in a liquid is disclosed which has a liquid spouting nozzle element for violently spouting a pressurized liquid, an impact disperser for generating a dispersion stream of the pressurized liquid directed into the liquid surrounding the impact disperser when the spouted pressurized liquid impinges upon the disperser and a gas supplier for supplying and guiding a stream of gas to a region surrounding the impact disperser thereby causing the gas stream to be dragged into the dispersion liquid stream. The gas dragged into the dispersion liquid stream is dispersed in the liquid and converted into fine bubbles.

Abstract: A method of and apparatus for transferring gas to liquid, for example, air to liquid in an aeration process. Included is a novel combination air-liquid conduit and a method of making same, a novel jet aerator wherein the outlet section is shortened to include only a converging portion, a novel aeration system utilizing the conduit and jet aerator aforesaid and a novel coupling means for mounting the aerator on the conduit.

Abstract: An apparatus for dissolving at least one gas in a liquid comprises an eductor submerged in a liquid, desirably in combination with a high turbulence mixing device, so that synergistic results are obtained. The inlet portion of the eductor generally has an inward convergence towards a throat. The outlet portion of the eductor has an outward divergence. A diffuser which generally carries the gas mixed with a liquid extends through the eductor inlet portion and through the throat portion into the outlet portion. In a desired embodiment, the diffuser is connected or attached to a high turbulence mixing device such as desirably, a flat plate orifice in a conduit. An injection tube extends through the flat plate orifice downstream into the conduit pipe and injects a gas into the liquid to produce a gas-liquid mixture.The apparatus dissolves an exceedingly high amount of gas into a liquid and requires very low amounts of energy.

Abstract: The invention provides an evaporative airconditioner comprising a base, side panels and a top and wherein the side panels are supported on the base and have stiles having mitred side edges and wherein adjacent side panels abut and close sides of the airconditioner.A water trough for delivering to the side panels is also used and is an annulus of U-shaped section and is received in complementary formations in the upper ends of the side panels to stabilize those panels and be itself supported by the side panels.Clips may additionally secure the side panels together.The base may include a first platform for air blower means, a second perimetric, platform for the lower ends of the side panels, a perimetric flange to restrict outward movement of the side panels and a water sump.The top may include a perimetric flange to restrict outward movement of the tops of the panels.The airconditioner can have certain standard parts modified so as to be side, top or bottom delivery.

Abstract: An evaporative cooler having an evaporation pad shaped to extend essentially circularly about a blower to define an essentially circular chamber into which the blower draws air through the pad to evaporate moisture therefrom. The chamber may have oppositely convex top and bottom walls, with the blower preferably discharging downwardly through the bottom wall. Water is fed to the top of the pad through a tube extending circularly along the upper edge of the pad and containing water under pressure and having spaced openings through which the water discharges onto the pad.

Abstract: An add-on humidifier kit for use with a room air conditioner includes a cabinet frame extension for mounting on the room-side of the cabinet sleeve. The extension is composed of an upper water distribution header and a lower drain trough retaining a water pad located in an extension of the discharge duct of the air conditioner, while an electrical heating unit is mounted in the extension to heat the return room air to achieve a comfortable temperature, allowing the heated air to pick up moisture from the water pad. A portable water tank assembly is adapted to be positioned on the floor beneath the air conditioner and electrically coupled to the air conditioner through separable connectors providing tank mounted controls for the heating unit along with a humidistat, water flow regulator and water pump mounted in the water tank unit.

Abstract: A method of and apparatus for drying odoriferous organic substances wherein the substances are introduced into a ring-shaped piping system via a turbulence mechanism in which the substances are comminuted and thereafter circulated through the piping system and dried by a heated air flow produced by a heater and a blower. Air flow containing the dried substances is discharged from the piping system and passed over a separation system where the dried substances are separated from the humid odoriferous air flow. The air flow withdrawn from the piping system is introduced into a sprinkling bed where a chemical reaction takes place to deodorize the air flow.

Abstract: This invention relates to a compact evaporator cooler apparatus having a vaporizer means mounted within a housing means and a fluid supply means connected to the vaporizer means for the mixing of air and water to thoroughly saturate the air. The vaporizer means includes a power assembly having a motor member with a central shaft to drive a vaporizer disc on one end and a fan blade at the other end to achieve a thorough vaporization or fogging of water particles discharged outwardly from the vaporizer disc. The vaporizer means further includes a filter assembly having a filter member operable to filter the air therethrough and permit the cooled air to pass therethrough to the area to be conditioned.

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.