Abstract: The invention relates to a method and apparatus for reducing steam pressure and temperature in a steam conditioning valve, in which steam flow is regulated with the aid of a valve plug (5) displaceably arranged in a valve seating (4), the plug being perforated by a plurality of holes (6), while cooling water is simultaneously taken into the upper portion (8) of the valve and is regulated in proportion to the regulation of process steam, said water being taken through a hollow valve spindle (7) passing through the plug (5) for discharge through a jet (12) downstream of the center of the departing steam flow. The plug (5) has at least one row of holes (14) in its central region (13). For small opening amounts of the valve (1) process steam is taken through at least one separate duct (15) up to and past the coolant outlet from its openings (16) such as to flow past and break up the coolant, which is ejected from the duct (15) in the vicinity of, and just above the coolant outlet openings (16).

Abstract: In an aeration apparatus and method for producing ultrapure water, a device for vigorously mixing an aeration gas with untreated water is attached to a water pipe through which the water is fed to a reaction tank. The device vigorously mixes the aeration gas with the untreated water in the water pipe before the water reaches the reaction tank. The reaction tank can be smaller, an aeration system for producing ultrapure water can be simpler, and the efficiency of the aeration system can be improved.

Abstract: An air treatment system has a removable and replaceable filter, the filter having a plastic frame, and having a multi-layer filtering medium. A filter seat has a switch located along one side in contact with a flexible tab. When the filter is located in the seat and faces the desired direction, one of two projections on the top and bottom of the filter frame moves the flexible tab to activate the switch, which signals proper installation of the filter. When a filter element is installed, it starts a timer which times the service life of the filter element and an air treatment cartridge. When the timer times out, it signals a user through an LED or audible alarm to replace the replaceable components.

Abstract: The present disclosure concerns an automatic choke system designed to make a whole carburetor shorter and more compact. The system comprises a case body having a generally inverted L-shape, with a thermo-element housed in a vertical portion of the case body. A thermistor proximate to thermally expanding wax inside the thermo-element is heated up by electric current, which increases its own electric resistance with the increasing heat. A piston is projected from the top end of the thermo-element by the thermal expansion of the wax. A link housed in the horizontal portion of the case body is pivotally supported therein so as to move a moving part downward when the link is acted on by the piston. The moving part pushes down a starter valve to close a by-pass passageway as well as push down a needle to close an auxiliary fuel passageway.

Abstract: An improved apparatus for introducing steam into an airstream in an HVAC system includes a supply header, steam dispersing structure and structure for collecting condensation from the steam dispersing structure. The supply header is adapted for connection to a source of steam and is preferably elevated with respect to the return header, so that condensation in the supply header and steam dispersing structure is forced into the return header under the influence of steam pressure and gravity. One embodiment of the invention presents a pair of streamlined jackets on one or more of the dispersion tubes that reduce heat loss to the air stream, thereby reducing the amount of condensate that is formed. The jackets are streamlined to minimize turbulence and static pressure loss.

Abstract: A smoke stack, which discharges contaminated gases, is provided with a plenum chamber, at its end, formed of one or more stacked modules. Each module includes a hollow cylindrical housing, from which protrudes, in various radial directions, a plurality of ducts, each being provided with a nozzle at its end. The nozzle has a central passageway through which a portion of the gases pass and is discharged into the atmosphere, and a second passageway which directs the air around the discharging gases for imparting a swirling action to the commingled gases. An ultra low volume of treatment fluid, usually a liquid chemical, is progressively discharged into the central passageway so that fog is generated as the gases and liquid emerge. Relief valves for the gas discharge into this fog. An accumulator tank at the top of a chamber or a metering pump supplies the liquid.

Abstract: An apparatus for mixing gas and liquid comprising a generally rectangular concrete base, a vertically extending cylindrical housing mounted on said concrete base and having a hollow interior, an open end portion and a bottom portion embedded on said concrete base, said bottom portion being provided with horizontal reinforcing bars passing through the walls of said cylindrical housing to anchor said housing with said concrete base, said cylindrical housing being provided with a plurality of apertures disposed at the lower section thereof proximate said concrete base. Gas diffuser means concentrically held inside cylindrical housing, said gas diffuser means being defined by an elongated porous tubular member provided with a cap fitted at the top end portion thereof and an elbow fitting detachably secured at the bottom end portion thereof.

Abstract: An evaporative element or cartridge especially useful in humidifiers comprises a plurality of stacked slit and expanded wicking paper layers, and means for supporting the wicking paper. The supporting means may comprise a layer of slit and expanded metal sandwiched in between the stacked wicking paper layers. The stacked wicking paper and metal layers are held together with an adhesive. Alternatively, the supporting means may comprise a rigid frame on the side edges of the stacked wicking paper layers, the frame having prongs engaging the wicking paper layers. Each layer of stacked wicking paper is staggered with respect to adjoining layers. The wicking paper has superior capillary rise of 79 to 112 mm/min.

Abstract: A combination splash/trickle pack for an evaporative cooler, which comprises packing elements 10,12 made from expanded metal or plastics sheets. The packing elements 10,12 are arranged such that in use they form a stack of packing elements within the cooler with the width and length of the packing elements determining the width and depth of the pack. Each of a plurality of the elements 10,12 has an inclined surface with an angle of inclination which varies so that in use a first region of the surface is sufficiently inclined to the horizontal to serve as a trickle surface and a second region of the surface is sufficiently close to the horizontal to serve as a splash surface.

Abstract: An apparatus for introducing steam into an airstream in an HVAC humidification system includes a steam supply header, a steam dispersion tube mounted above the supply header, a drain connected to a bottom end of the steam dispersion tube and a steam supply tube positioned within the steam dispersion tube. The steam supply tube has a lower end communicated with the supply header and an upper end that is communicated with the top end of the steam dispersion tube. Since steam is introduced into the top end of the steam dispersion tube, rather than the bottom end, moisture droplets that are entrained in the steam will be urged downwardly by the steam flow toward the drain rather than held up within the steam dispersion tube, significantly increasing the rate at which steam may be introduced into the airstream without spitting.

Abstract: In a liquid vaporizing/feeding method of the present invention, carrier gas is forced out at a very high speed against a mass flow controlled liquid feedstock to change the liquid feedstock into a mist; after that, the mist of the feedstock is vaporized and mixed with the carrier gas, and a mixture of the mist and carrier gas is furnished to a succeeding process. A liquid vaporizer/feeder according to the present invention comprises a main vaporized unit which is cylindrical in shape, and a mist nozzle having an inside nozzle fixed in an inlet of the main vaporizer unit for feeding liquid feedstock into the main vaporizer unit and an outside nozzle encompassing an opening of the inside nozzle for forcing a carrier gas at high speed around the opening of the inside nozzle, and the main vaporizer unit has an evaporation space where a mixed mist of the liquid feedstock with the carrier gas that is forced out of the mist nozzle is vaporized.

Abstract: A dispenser having a housing and at least one inlet vent and at least one outlet vent about the housing is shown. A fan, preferably a centrifugal fan, is operated by a battery and directs air into and out of the vents. A cartridge containing a vaporizable substance, such as a fragrant oil or gel, is located adjacent the inlet vent. The centrifugal fan pulls air in the inlet vent, at least partially across the cartridge, upward through a portion of the housing, and radially outward through the outlet vent. Preferably, a rim of the cartridge and a shelf inside the housing and adjacent the rim are adapted to form substantially a boundary between a lower and a middle compartment in the housing. The shelf and the rim cooperate to prevent air from circulating below the shelf and entering the lower compartment. At least one upper rib and a housing of the fan are adapted to form a boundary between the middle compartment and an upper compartment.

Abstract: A carburetor float bowl is provided which is elongated in a direction lengthwise of the vehicle and has a smooth upwardly curved section on the bottom wall at the front and rear ends of the float bowl to minimize sloshing of the gasoline and also minimize foaming of the gasoline within the float bowl during severe back and forth rocking movement of the carburetor as would occur in a motorcycle passing over a series of bumps at a high speed.

Abstract: A furnace mounted humidifier for increasing the moisture content of the air flowing through the humidifier and subsequently the air flowing from the furnace. The simple construction of the scoop humidifier ensures convenient installation and operation while adding moisture to the air flow. The humidifier includes a housing adapted to be mounted to the furnace wall and inlet and outlet passageways positioned within the duct for directing air flow into and out of the housing. A moisture media within the housing retains water sprayed across it through which the air flow is directed. The configuration of the air passageways and the housing facilitate the continuous flow of air across the moisture media.

Abstract: A white smoke generating apparatus comprising a vessel, a discharge opening for discharging white smoke generated in said vessel to the exterior of said vessel, a cryogenic gas spray opening for spraying cryogenic gas, and a water spray opening for spraying heated water. The cryogenic gas spray opening and water spray opening are provided inside the aforementioned vessel, and these cryogenic gas spray opening and water spray opening are arranged such that cryogenic gas, discharged from the cryogenic gas spray opening, and heated water, discharged from the water spray opening, counter or cross contact. As a result, according to the present invention, white smoke can be generated with a high efficiency using only a small amount of cryogenic gas.

Abstract: The invention relates to tower coolers in which the exchange of heat between the liquid to be cooled and the atmospheric air takes place in cross-flow, in plural successive heat exchangers. Liquid leaving a first exchanger is homogeneously mixed before passing to the next exchanger. This may be effected by a device comprising a first compartment sited beneath a first exchanger so as to receive the liquid which falls from said first exchanger. A spillway is placed at one end of said compartment in such a manner that the liquid is displaced therein in a first direction, either that of the airflow or the reverse direction. A second compartment is placed beneath the first and communicates therewith via the spillway such that the liquid is displaced therein in a second direction opposite to the first. Means are provided for discharging the liquid from the second compartment toward the following exchanger.

Abstract: A contactor for the transfer of matter and heat between gas and liquid comprising a helical support of heat conductive material allowing the flow of a liquid to be treated, a wall of heat conductive material and in thermal contact with the said support, separating in sealing-tight manner the said liquid and a heat exchanging fluid, characterized in that the said support and the said wall are formed by a vertical stack of open work plates of a heat conductive material, offset angularly in respect of one another by rotation according to the axis of the said support, each plate thus forming an element of the said support, like a step of a spiral staircase, and an element of the said wall, in such a way as to obtain an economical and efficient evaporator or absorber.

Abstract: The invention improves the performance of Multiple Downcomer fractionation trays and comprises placing a bed-like layer of packing material closely adjacent the bottom surface of the tray. The packing is located in the so-called "disengagement" zone under the tray and does not extend down to the tray below. Means comprising perforations in the downcomer sidewalls are provided to spread liquid from the tray above onto the packing material.

Abstract: A cleaning device for a clean room has at least two filter-fan units each comprising a filter and a fan. Connecting elements connect the filter-fan units to one another to form a self-supporting construction unit. Each filter-fan unit comprises a housing having profiled elements for engaging the connecting elements in the form of bars or angled pieces. The connecting elements can be T-shaped or cross-shaped. The construction units can be supported on supports on the floor or suspended from the ceiling.

Abstract: A counterflow cooling tower (10) is provided having specially designed inlets (14, 16) which minimize turbulence and air flow disruption at the inlet region of the tower (10), thereby increasing cooling efficiency. The tower (10) preferably includes a casing (12) presenting sidewalls (28, 30) each having a lower edge (14a, 16a) which defines the upper margins of the inlets (14, 16). The tower fill structure (20) presents, adjacent each inlet (14, 16) a relieved air entrance face (44, 46) which extends at an angle both downwardly and inwardly from the adjacent casing wall edge (14a, 16a); in addition, the fill structure (20) includes a generally horizontal bottom surface (48) inboard of and below the edges (14a, 16a). A substantially unrestricted, fill-free air flow zone (51) extends between the inlets (14, 16) and between the fill bottom surface (48) and the tower cold water collection basin (22).