Abstract: A non-circulating water system for use in evaporative coolers which incorporates a timing means in conjunction with a valve means, to control the flow of water to the pads. It applies measured amounts of water to the pad and allows measured amounts of time between applications so that most of the water is used in the evaporation process and minimal amounts of water are discharged though a drain. Domestic water line pressure is used to transfer water to the pads, eliminating the need for reservoir water, float valve, pump and overflow pipe. The cycle of the timing means may be varied dependent on moisture or temperature conditions sensed in the pad.

Abstract: The humidifier module for use in a gas humidification unit has a humidification chamber and a water heating chamber separated by a water vapor permeable, liquid water impermeable membrane. Gas inlet and outlet ports are provided in the humidification chamber, a water inlet port is provided for the water heating chamber, a water inlet port is provided for the water heating chamber, and a heat exchange wall is provided on one side of the water heating chamber to receive heat from a heat source in the humidification assembly. The gas humidification assembly has an enclosure adjacent the heat source, for receiving the humidifier module, a water supply source, and a controller of the heater and water supply to the humidifier module. A sensor is provided for monitoring the level of fluid within the humidification chamber, and another sensor is provided for monitoring the level of water within the water heating chamber.

Abstract: A nozzle/venturi with a bypass for controlling the pressure differential and therefore the amount of air which is entrained into the fluid stream. The nozzle/venturi assembly is utilized in a filtering system for removing contaminants from a water supply. The nozzle/venturi assembly includes a nozzle/venturi with a water inlet, an air inlet and an outlet passage and a bypass valve with an adjustable passageway to control the fluid flow through the bypass. The bypass valve includes a diaphragm which is effected by the downstream pressure resulting in an adjustment of the pressure differential and a spring biased seal valve to control the pressure which will open the bypass. The nozzle/venturi assembly provides efficient and precise control of the pressure differential to ensure that a constant amount of air is entrained into the fluid stream through the entire pump cycle.

Abstract: An evaporative cooler apparatus and method of operation are disclosed. The invention was conceived and developed to humidify and cool the attic space between the roof and the ceiling of man-made buildings or other structures. The apparatus is comprised of an induced draft fan assembly which blows air through an evaporation bundle comprised of one or more concentric cylinders of fibrous evaporation pads. The most advantageous embodiments of the invention and optimum parameters of operation result in reduced costs for installation, for evaporation water, for electrical power, and for service and maintenance as compared with devices of the prior art.

Abstract: A humidifier assembly is disclosed. Parts of the humidifier assembly may be disposable. The assembly comprises a housing, heater means on the housing, a liquid water supply means that communicates with the heater means, a hollow shell on the housing that defines a humidification chamber, and a filter means in the humidification chamber and positioned in juxtaposition with the surface of the heater means for passing water vapor into breathable gas. Preferably the filter means is hydrophobic.

Abstract: A humidifier (10) used in respiratory therapy is disclosed where the surface tension of a light probe (32) used therewith is maintained greater than the surface tension of the aqueous liquid used in the humidifier (10). Maintaining the surface tension of the light probe (32) greater than the surface tension of the aqueous liquid generally avoids erroneous indication of aqueous liquid level in the humidifier (10). Erroneous indications of liquid level can be caused by gas bubbles adhering to submerged portions of the light probe (32) or liquid droplets adhering to unsubmerged portions of the light probe (32).

Abstract: A humidifier assembly is disclosed. Parts of the humidifier assembly may be disposable. The assembly comprises a housing, heater means on the housing, a liquid water supply means that communicates with the heater means, a hollow shell on the housing that defines a humidification chamber, and a filter means in the humidification chamber and positioned in juxtaposition with the surface of the heater means for passing water vapor into breathable gas. Preferably the filter means is hydrophobic.

Abstract: A gas treating system including a housing forming a duct for a gas stream having a vertical panel of flow-through evaporative media secured across the duct, a blower mounted within the duct downstream from the panel adapted to draw the gas stream through the duct, a liquid dispersal assembly connected to a liquid supply adapted to conduct an evaporative treating fluid into the panel where it evaporates into the gas stream as it flows through the panel, and humidity or temperature sensors positioned within the duct downstream from the blower operatively connected with the liquid supply to increase and decrease the flow of liquid into the panel to maintain a preselected humidity or temperature in the gas stream as it flows out of the housing.

Abstract: A carburetor is described, comprising a main barrel; a throttle; an idle system positioned between a cavity full of fuel and the main barrel, with progression and idle mixture holes, the opening of which is regulated by the conical point of an element to be positioned in a first position with respect to the said idle mixture hole by means of screws; the system comprises a hole for metering the fuel and a bush for metering the emulsion air; a first electromagnetic element has an obturator for closing the said hole with a ball; the element is connected to the movable keeper of a second electromagnetic device for moving the conical point away from the idle mixture hole; control devices are present to operate the said electromagnetic devices during accelerator release.

Abstract: A steam desuperheater comprising a liquid spray tube assembly positioned in a steam line and including a plurality of liquid outlet openings supplying liquid to plural spray nozzles, and a hollow piston plug axially movable therein upwardly from a lower valve seat to progressively open said outlet openings.

Abstract: A liquid level sensing device, particularly useful for apparatus designed to humidify oxygen gas being administered to patients undergoing respiratory therapy is disclosed. The liquid level sensing device detects the liquid level in a canister having an optical probe therein. A bracket, rotatable on a frame of the device, carries a light source and a light sensing member for determining liquid level in the canister in conjunction with the probe. The hinged bracket engaging relation, and it also rotates out of probe-engaging relation and registry with the light probe. When the bracket is out of registry with the light probe, the canister may be removed and replaced. The bracket may be releasably retained out of probe-engaging relation by means of a snap fit structure.

Abstract: A safe method for mixing pure oxygen, or an oxygen enriched gas, at high pressure, with waste liquor in a wet oxidation system, such that intermittent drying conditions are avoided, thereby preventing possible spontaneous combustion, fire or explosion; comprising adding the oxygen to pure liquid water before it is mixed with the waste liquor.

Abstract: Apparatus for periodically draining, flushing and replacing the operational water supply in an evaporative cooler during operation thereof and for completely draining the cooler when its operation is terminated. The apparatus includes a special siphon drain valve mounted in the sump of the cooler so as to be normally in an unprimed non-siphoning state and when in such a state, the evaporative cooler will operate in the normal manner. When the cooler is in normal operation, its water supply will increase in mineral salt concentration and other contaminants, such as dirt, bacteria and the like.

Abstract: Improvements are disclosed in liquid level sensing apparatus having a liquid replenishment line so that as liquid is expended more may be added to keep the liquid at a desired predetermined level. The apparatus is contemplated for use in the humidification of gases, particularly for the administration of oxygen and the like to a patient.

Abstract: A fuel supply system for a small engine including a constant level fuel chamber for receiving fuel from a fuel tank through a fuel drawing pipe to eject the fuel into a carburetor through a main nozzle after temporarily storing the fuel therein. A cover is provided to enclose the fuel drawing pipe and the constant level fuel chamber to separate the fuel drawing pipe and the constant level fuel chamber from a fuel storing section in the fuel tank, to enable fuel of a constant flow rate to be fed to the carburetor through the main nozzle irrespective of variations in the liquid level in the fuel storing section.

Abstract: An apparatus to control a liquid level in a carburetor with a fuel chamber formed in a main body of the carburetor. A level detecting element, i.e., thermistor, in the upper portion of the main body produces an electrical signal in response to liquid level, opens and closes an electromagnetic valve. Inflow of the fuel to the chamber is thereby controlled. A small chamber is formed in the fuel chamber by a partition for insertion of the detecting element.

Abstract: A method and device for conveying a diphasic fluid of high free gas content through a pipe includes separating a liquid of reduced free gas content from the diphasic fluid. The pressure of the separated liquid and the remaining gas are separately simultaneously increased to the same value and at least some of the increased pressure gas is remixed with the increased pressure liquid to obtain a new fluid of reduced free gas content. This new fluid is then introduced and conveyed through a pipe. Alternatively the steps of the method can be repeated before introducing the new fluid into the pipe for further reducing the free gas content thereof.

Abstract: A method for removing dust and noxious materials from flue gases within a tall chimney through which the dust can be collected efficiently without increasing the operating cost of the boiler. A spraying device assembly is adapted to be mounted in a vertical portion of a chimney so as to save space.

Abstract: A carburetor for an internal combustion engine comprises a control for maintaining the pressure of the fuel supply through the carburetor constant. The control includes a sensing device, which is preferably a level sensing device, and a fuel feed valve which is automatically operated by the sensing device. The sensing device produces signals which operate the valve to control the rate of fuel supply to the carburetor and, in order to provide an indication of the instantaneous rate of fuel consumption of an engine to which the carburetor is fitted, these signals are also fed to a fuel flow indicator. The fuel flow indicator produces a reading of the fuel flow rate either in dependence upon the frequency of opening of the valve when the opening period is constant, or in dependence upon the period for which the valve is open when the frequency of opening of the valve is constant.

Abstract: A humidifier including a misting mechanism for misting water by a ultrasonic vibrator etc. and a water feeder formed by a water storage tank and a water passage and an ion exchange resin layer disposed in the water passage to the misting mechanism.

Abstract: An electro-mechanical cartridge type fuel flow control valve assembly that can be substituted as a whole for the conventional power valve unit of a carburetor to convert the carburetor to one of the feedback type. The cartridge includes a stepper motor threadedly engaging a needle like power valve for vertically moving the power valve to vary fuel flow upon energization of any of four terminals formed as a quick disconnect coupling as part of the cartridge.

Abstract: A previously disclosed cartridge type humidifier apparatus including a separate heater module with a cylindrical opening for replaceably receiving therein disposable cylindrical humidifier cartridge modules, having a housing containing a replenishable water supply, is employed as a water supply source for producing an aerosol with an oxygen supply for pediatric inhalation therapy. The cartridge modules each have a tubular metal main body adapted for a sliding fit within a complimentary tubular walled heater. The metal tubular body has rigid plastic top and bottom end portions. The plastic top end portion is a cap with a center axial gas inlet tube, and a separate transverse gas delivery pipe, the cap forming a closed air space over a pool of humidifying liquid.

Abstract: Charge forming apparatus in which impact of an air stream upon a stream of fuel exposed in a channel displaces fuel into the air stream to form a mixture, wherein the length of the fuel stream exposed to the air stream can be varied for controlling the proportions of fuel and air in the mixture.

Abstract: An attemperator in the form of a steam desuperheater is disclosed herein and comprises a water tube adapted to be connected to a source of water under high pressure and a spray tube communicating with the water tube through a flow-control device for controlling the flow of water from the water tube to the spray tube. The spray tube is adapted to be located in a steam line for injecting cooling water into the steam when its temperature exceeds a predetermined temperature and accordingly is formed with one or more nozzles for injecting a spray of water travelling along an expanding swirling path into the steam, the water being atomized into small droplets which easily evaporate in the steam. Preferably, a plurality of nozzles are provided arranged in rows extending axially of the spray tube and the rows are circumferentially spaced apart. Also, the nozzles preferably communicate with the inside of the spray tube through a series of small ports.

Abstract: An aerator for the biological purification of waste water comprises an undulating annular disk of sheet material, centered on a vertical axis of rotation, forming interleaved sets of upper and lower sectors interconnected by generally vertical, radially extending webs. Each lower disk sector defines with the adjacent webs an upwardly open channel whereas each upper disk sector defines with its associated webs a downwardly open channel. A central sleeve, descending from the level of the alternately upwardly and downwardly open channels, obstructs the inner ends of the latter but opens into the inner ends of the former whose effective cross-sectional area is adjustable with the aid of a vertically shiftable shutter ring inside the sleeve.

Abstract: A fuel supply system supplies volatile fuel at a controlled rate to an air-fuel mixing chamber leading to a subatmospheric intake manifold of an internal combustion engine. Fuel is metered out by a metering gear pump supplied with fuel under pressure sufficient to maintain the fuel in its liquid state. An equalizer valve maintains the pressures on the two sides of the gear pump equal. This assures linearity of fuel rate as a function of pump speed. Pump speed is measured to provide a feedback signal to a controller. The controller compares the feedback with a control signal indicative of desired rate of fuel to develop driving power for application to the gear pump to drive the latter at the speed that supplies fuel at the desired rate.

Abstract: A crossflow cooling tower, water flow control valve and diffuser which includes an open ended inner valve cylinder which moves from a closed to an open position by means of a screw mechanism and allows water to be evenly distributed over a 360.degree. range to all parts of a hot water basin located directly under the valve. The water leaving the valve is directed and proportioned by a series of baffles and a cone to effect a uniform distribution over the basin.