Abstract: PLANT FOR WASHING MACHINERY, which is characterized by being a compact plant which includes a small engine room of approximately 9m3, inside which the different elements such as the following are housed: pressure pumps, electric motors, a diesel boiler, a hot water accumulator, a plant for osmotizing water, an electronic robot mechanism, an electric switchboard, fuel tanks, osmotized water tank, measurement pumps and auxiliary material. The washing liquids come out under pressure through hoses and reach a manual shuttle.

Abstract: A pulse vacuum extraction solvent cleaning system in which solvent remnants are removed from a cleaning vessel by evacuating the closed cleaning vessel to a predetermined vacuum pressure. At the predetermined vacuum pressure, if the concentration of solvent exceeds a predetermined value, air is introduced into the cleaning vessel to reduce the vacuum pressure and provide a carrier to remove the solvent. The process repeats until the solvent concentration falls below a predetermined threshold.

Abstract: A method for cleaning or sterilizing objects in a liquid fluid cleaning system comprising a high-pressure storing/working vessel, a cleaning chamber, and a low-pressure supply vessel, the method comprising the steps of loading the cleaning chamber with objects to be cleaned or sterilized; supplying cleaning fluid to the cleaning chamber from the low-pressure supply vessel by means of pressure difference; supplying cleaning fluid to the cleaning chamber from the high-pressure storing/working vessel; cleaning the objects in the cleaning chamber with the cleaning fluid; transferring cleaning fluid from the cleaning chamber to the high-pressure storing/working vessel; and unloading the cleaned objects from the cleaning chamber.

Abstract: A drying unit is disposed above a cleaning tank containing a cleaning liquid for cleaning semiconductor wafers W. A wafer boat holding semiconductor wafers moves between the cleaning tank and the drying unit. The drying unit has a fixed base surrounding an opening formed in the cleaning tank, a liftable top cover placed on the fixed base, and an O-ring interposed between the fixed base and the liftable top cover. The liftable top cover can be moved vertically by a first lifting means.

Abstract: A carbon dioxide dry cleaning system features a pair of liquid carbon dioxide storage tanks in communication with a compressor. A sealed cleaning chamber contains the objects being dry cleaned. By selectively pressurizing the storage tanks with the compressor, liquid carbon dioxide is made to flow to the cleaning chamber through cleaning nozzles so as to provide agitation of the objects being dry cleaned. Liquid carbon dioxide displaced from the cleaning chamber returns to the storage tanks. A still is disposed within one of the storage tanks and receives soiled liquid carbon dioxide as it is returned from the chamber. The pressure in the storage tank causes the soiled liquid carbon dioxide in the still to boil off. The gas is communicated to a third tank.

Abstract: A method of replenishing liquid carbon dioxide solvent in a liquid carbon dioxide dry cleaning system or other dense phase carbon dioxide cleaning system. The method uses dry-ice or solid carbon dioxide, as a replenishing stock, thus reducing transportation, storage and handling costs. The method disposes solid carbon dioxide blocks in a cleaning chamber after a cleaning cycle. Liquid carbon dioxide solvent is boiled and is used to melt the solid carbon dioxide blocks. Liquid carbon dioxide solvent produced by melting the solid carbon dioxide blocks is pumped from the cleaning chamber into a storage tank to replenish the liquid carbon dioxide solvent.

Abstract: A continuous-flow warewashing apparatus that includes: a substantially rectangular tub having four side walls and a floor; a pump; a tub outlet channel coupled between the tub and the inlet port of the pump for providing fluid communication between the tub interior and the pump; a recess extending into one of the side walls to form a recessed area within the tub interior, outside of the perimeter formed by the four side walls; at least one outlet nozzle in fluid communication with the outlet port of the pump and extending into the tub interior so as to provide a continuous flow of washing fluid into the tub interior; a fluid-level sensor positioned within the tub interior; and a heating coil positioned within the tub interior; where at least one of the outlet nozzle, fluid-level sensor, or heating coil is positioned in the recessed area so that effective working and holding area within the tub is increased.

Abstract: A cleaning system for use in an apple pre-sizing or packing line including a plurality of high pressure spray nozzles located a short distance above the apples on the line. The spray is maintained at a pressure in the range of 70-300 psi and is directed so as to substantially contact all of the surfaces of the tumbling apples as they move along the packing line. The spray fluid is collected beneath the packing line, and recirculated back to the spray nozzles by a pump, at a volume rate of 50-600 gpm. In modifications of the apparatus, the spray fluid may be heated to a temperature between ambient and just below that which is known to damage apples. In addition, chemicals may be added to the fluid, and/or the fluid may be heated and the fluid sent through a length of contact piping prior to being recirculated to the nozzles, with the piping being of sufficient size and length such that mold spores are killed by the chemicals/heat of the fluid during residence in the contact piping.

Abstract: A continuous-flow pot and pan washing system comprising a frame; a substantially rectangular tub mounted on the frame, where the side walls of the tub are shorter in length than the back and front walls of the tub; a pump mounted to the frame; a tub outlet channel coupled between the back wall of the tub and an inlet port of the pump, providing fluid communication between the tub interior and the pump; a manifold mounted to a first one of the sidewalls, having a manifold inlet coupled to, and a fluid communication with, the outlet port of the pump; and an array of outlet nozzles extending from the manifold, through the sidewall and into the tub interior, where a substantial portion of the outlet nozzles are angled towards one of the front or back walls such that the nozzles are adapted to jet fluid in a whirlpool-like manner substantially about the perimeter of the tub. Preferably the nozzle array includes nozzles positioned at least two vertical levels.

Abstract: A system and method for recovering vapors in industrial washing equipment, wherein a solvent is used to wash various articles within a wash area of the equipment. The system includes a hood supported above the wash area, a motor driven fan mounted within the hood for creating an envelope of negative pressure between the wash area and the hood to draw rising vapors into the hood and to direct the vapors at high velocity against a surface to cause separation of pure solvent liquid droplets from the vapor through impaction, and a coalescer for gathering the separated droplets of pure solvent prior to directing the pure solvent to a holding tank for reuse in washing operations.

Abstract: A boat hull cleaning system, particularly for sail and motor yachts, prevents the contamination of sewers and open waters by recirculating the cleaning water within the system without discharging it therefrom. The system includes a trailerable container, of a size up to the size of conventional, large ocean-going shipping containers, which is fitted with a catch basin having side and end walls that extend upwardly thereon. Hinges between the basin and the walls permit the latter to be folded downwardly into a position in which the walls are downwardly inclined towards the basin. Corner plates connect the adjacent edges of the side and end walls and with the latter form a water drain surface which directs used, contaminated water into the basin. The basin is covered with a water permeable, metal mesh floor which carries supports for holding the boat hull during cleaning.

Abstract: Household and institutional sinks are commonly used in cleaning regimens in which articles are contacted with aqueous cleaning media under conditions of agitation. Such agitation can be provided by directing the aqueous medium contained within the sink to a pump that returns the aqueous medium to the sink under agitating conditions such that the agitation can act to promote soil removal. The aqueous medium can be withdrawn from a waste line installed in a sink drain. The aqueous medium can then pass into a pump which can return the aqueous medium to the sink at a location in the sink causing the aqueous medium to agitate and circulate within the sink bowl. Preferably, valved waste line hardware can be installed in the drain such that when the waste line valve is closed, the aqueous medium is retained in the sink. The pump intake is placed in liquid communication with the aqueous cleaning medium upstream of the valve.

Abstract: An apparatus, method and purge concentrate are capable of purging water-based and non-water-based paints and other coatings from automated and manual equipment using non-VOC containing aqueous purge solutions. Purge solutions of the invention contain water, detergent builder and wetting agents. The solution is maintained at a selected concentration and at a selected elevated temperature range by continuously recirculating the solution through the automated coating equipment. For manual equipment the solution is set at the correct concentration and maintained at the correct temperature range. For an automated system, spent purge solutions can be reconditioned and recirculated to avoid waste.

Abstract: A cleaning apparatus for cleaning chemically processed articles between chemical processing steps. The cleaning apparatus includes a sealable pressurization vessel. After a chemical process step, an article, such as a semiconductor wafer is placed in the vessel. The vessel is sealed. Vessel pressure is adjusted. Solvent in the vessel is heated to a boil forming a vapor. Solvent vapor is recondensed by a primary condensing coil. Condensed solvent rains onto the article, washing it. After the article is clean, it is dried when a secondary condensing coil condenses the solvent vapor, causing the distilled solvent to rain into and be collected by a collection tray. Collected solvent is channelled into a storage reservoir. The storage reservoir is sealed after all of the solvent is collected. The vessel is opened to remove the cleaned article.

Abstract: An apparatus for washing and recovering a contaminant from an object. A washing agent flows over the object, and the washing agent and contaminant are received in a basin. A slurry of the washing agent and contaminant are circulated through at least one separator and one filter to produce a cleaned slurry flow. The cleaned slurry flow is recirculated into the basin. A first pump which is used to flow the washing agent over the object has a supply port and a pressurized output port. A pressurized fluid supply is coupled to a variable regulator with a variable pressure output. A second pump driven by the variable pressure output impels the washing agent into the supply port of the first pump.

Abstract: A food processing apparatus for washing, aeration drying, and blending food product. The apparatus comprises a food product container having a mating lid, a mesh basket insert, and a network of tubing having a plurality of spray nozzle apertures for producing a cleansing mist, and drying airstream, directed toward the enclosed food product. The container further includes a fitting for enabling communication between the tubing network and a water source and an air source, and a valved drain outlet. Blender blades are rotatably mounted to the container floor and driven by a motorized base which supports the container during normal operating modes.

Abstract: A decontamination system for particulate matter is provided. The system has a fluid treatment chamber within which three screw-type augers operate to mix hydrocarbon laden soil with treating fluid for removing the hydrocarbon therefrom. The treating fluid is maintained in a fluid reservoir and is circulated into and out of the treatment chamber. The fluid is heated by a direct and an indirect heater. The hydrocarbons are released from the soil and allowed to float to the top where they collect and are removed for recycle or disposal. The decontaminated soil is removed from the treating fluid by a drag slat conveyor that permits excess treating fluid to drain therefrom and be collected for reuse in the decontamination system. A cyclone separator is included to spin off suspended fines within the recovered treating fluid. Optionally, a fluid press may be employed to compress additional amounts of treating fluid from the decontaminated matter.

Abstract: A high pressure hot water cleaning system which includes a source of water flowing to a pressure valve to allow the system to come online, providing a tank for receiving the water, the tank having an inner portion, and an outer jacket portion, a water heater, a pump for pressurizing the water, and a pressure wand for flowing the hot, pressurized water for cleaning. The system further provides a means to allow the water to cool when the wand is disengaged. This means includes a flow line from the pump to the inner tank portion of the water tank, where the hot water is cooled by the ambient water in the tank jacket portion, and returning the cooler water into the pump during the idle period. Further, there is provided a timer which is activated by a flow switch when the water flow is interrupted, so that after a period of time of idle time, the system is automatically shut down and must be manually reactivated.

Abstract: A wash water system for retrofitting a pre-wash tank or sink includes a plurality of spray nozzles which extend along an inner surface of a back wall of a pre-wash sink wherein the spray nozzles are in flow communication with a discharge side of a water circulating pump. A return conduit is provided wherein the return conduit extends vertically downward along the inner back wall of the sink a preselected distance and is in flow communication with a suction or intake side of said pump. The sink is provided with a bottom wall with at least one opening therein and a heater is provided with a conduit extending from the heater to and in flow communication with the opening in the bottom wall of the sink. A vertically extending first filter device is placed along the back wall of the sink over the openings into the return conduits to the suction side of the pump and a second filter device is placed over the opening in the bottom wall of the sink.

Abstract: A parts washer unit including a cleaning fluid storage receptacle which can be easily interchanged or exchanged with a like receptacle by the user of the unit. The unit includes a sink tiltably mounted to the top of a support frame that defines a space accommodating the receptacle. The sink includes a bottom wall having an integrally formed cylindrical portion extending centrally from said bottom wall and defining a drain opening and a splash guard. A conveyor is secured to the frame and permits the receptacle to be readily transported to and from the desired location beneath the sink drain opening. A fluid circulating system includes a pump, a bag strainer, and hoses which extend in use into the sink for directing fluid over parts to be washed. A cover is removably secured to the receptacle and has a central opening for receiving the splash guard.

Abstract: A mobile rotator jet sewer cleaner vehicle for cleaning a sewer line by fluid pressure, the vehicle having a fluid supply for delivering the fluid under pressure to a hose wound on a reel assembly which can be selectively wound or unwound in a vertical direction, wherein a bearing assembly movable in a horizontal direction is secured on a platform and a reel assembly is mounted on and movable with the bearing assembly. A control for selectively actuating winding and unwinding the hose on the reel assembly is provided, and this control, which may also include other instruments and controls for operating the sewer cleaner, is movable with the bearing and reel assembly. In another embodiment of the invention, the platform telescopes into and away from a recess in the vehicle chassis, so that the reel and bearing assemblies are extended from the vehicle when in use, but may be retracted into the recess when desired, and in such event the retracted jet sewer cleaner may be enclosed within the vehicle.

Abstract: The cleaning apparatus of the present invention is composed of a cleaning chamber 1 of vacuum-tight structure in which a work W to be cleaned is contained, an organic solvent vapor generating tank 4 communicated with the cleaning chamber 1 via piping, and a vacuum pump 6 for evacuating the cleaning chamber 1. A heat exchange member 3 through which a cooling medium passes is provided upside in the cleaning chamber 1. After the cleaning chamber 1 is reduced in pressure, the cooling medium is supplied into the heat exchange member 3 while organic solvent vapor is introduced from the vapor generating tank 4 into the cleaning chamber 1. Thus, a cleaning process is executed in combination of vapor cleaning by the vapor condensing on the surface of a work W and shower cleaning by the vapor being liquefied by the heat exchange member 3 and dropping onto the work W.

Abstract: A improved solvent cleaning method and system which is truly a closed system in which the object to be cleaned is placed in a chamber and subjected to a negative gauge pressure to remove air and other non-condensible gases after which a solvent is introduced to the evacuated chamber and the object is cleaned and then the solvent is recovered from the object and chamber within the closed system before the clean object is removed.

Abstract: A parts washer is provided having a cleaning fluid reservoir and a first mechanism provided with structure for performing a first parts washing function utilizing fluid in the cleaning fluid reservoir with the first parts washing function dissipating the cleaning from the reservoir. A second mechanism is provided for performing a second parts washing function utilizing cleaning fluid that increases the volume of cleaning fluid from a supply. A third mechanism is provided for sensing the volume of cleaning fluid in the reservoir and a) enabling operation of the first mechanism and disabling operation of the second mechanism with the cleaning fluid present in the reservoir in a first predetermined volume and b) disabling operation of the first means and enabling operation of the second means with the cleaning fluid present in the reservoir in a second predetermined volume.

Abstract: A parts washer is provided having a reservoir containing a supply of fluid and a first mechanism for pressurizing fluid from the supply and delivering the pressurized fluid to against a part to be washed with the first mechanism including an inlet for fluid from the reservoir which is at least partially immersed in reservoir fluid so that there is a predetermined fluid pressure at the inlet due to the depth of the fluid. Structure is provided for increasing the pressure of fluid at the inlet without changing fluid depth at the inlet.

Abstract: A portable hand washing and drying equipment unit comprises a housing having a front hand receiving opening communicating with a central hand compartment. Adjacently above the hand compartment is an upper compartment having a cleansing liquid reservoir with a valve-controlled flow tube for selectively delivering cleansing liquid from the reservoir to the hand compartment, and an electrically powered fan for providing a flow of hand drying air within the hand compartment. The reservoir and fan are supported by a shelf which is slidable into and out of the housing to enable access to such elements. Adjacently below the hand compartment is a lower compartment having a removable waste liquid receptacle therein for temporarily storing used cleansing liquid.

Abstract: The portable countertop dishwasher of the invention employs a housing, such that the pump and fluid handling assembly of the structure is positioned within the dishwasher in a compact manner between the dishwasher floor and bottom wall, with a drying assembly directed into the rear wall of the dishwasher in operative communication with the dishwasher cavity.

Abstract: A device for drying food products such as vegetables by aeration. The device includes a container having a domed cover and housing a network of tubing having a plurality of apertures through which compressed air is discharged for drying food products supported within said container in a mesh basket. The dome-shaped cover enhances air circulation by re-directing upward flowing air back down toward the enclosed food product causing certain foods such as lettuce to tumble in the resulting air stream. A pressure relief valve operates to limit pressure within the container and allow the escape of moisture laden air. In an alternate embodiment water is first allowed to flow through the tubing network and out of the tube apertures for washing the enclosed food product.

Abstract: An ultrasonic degreasing apparatus includes a cleaning section, a rinsing section, a hot water cleaning section, and a drying section. The cleaning section has an ultrasonic oscillator for oscillating ultrasonic waves in distilled water and a heater for heating the water, and performs a degreasing process including a cleaning process with respect to an object to be processed in the heated water by using ultrasonic waves. The cleaning section has a deaerating section for performing deaeration by circulating the distilled water. The rinsing section has an ultrasonic oscillator for oscillating ultrasonic waves in distilled water containing a rust preventive and a heater for heating the water, and performs a degreasing process including a rinsing process with respect to the object in the heated water by using the ultrasonic waves. The rinsing section has a deaerating section for performing deaeration by circulating the distilled water.

Abstract: A system for washing parts utilizing a circulated, heated liquid includes a master unit and at least one auxiliary unit. The master unit has a tank for heating the washing liquid, and has a pump for circulating the liquid through the chamber of the enclosure. The auxiliary unit is devoid of such a tank, but has means for making connections necessary to enable circulation of the liquid heated in the tank of the master unit through the chamber of the auxiliary unit enclosure.

Abstract: A method of and apparatus for removing plastic residues from objects of plastics processing machines includes a container with a treatment chamber filled with a heat transfer fluid and receiving an object such as extrusion heads or blow heads. A considerable reduction of the cleaning period is attained when withdrawing from the treatment chamber a portion of the heat transfer fluid and after being pressurized by a pump returning pressurized heat transfer fluid back into the chamber in form of a focused stream which is pointed in direction of the object being cleaned.

Abstract: A closed circuit solvent cleaning method and system in which the object to be cleaned is placed in a chamber and subjected to a negative gauge pressure to remove air and other non-condensible gases, after which a solvent is introduced to the evacuated chamber and the object is cleaned. Following this, the solvent is recovered from the object and chamber and then the clean object is removed.

Abstract: A cleaning system which includes a tank that contains a cleaning fluid. The cleaning fluid is typically in either a liquid, vapor or two-phase state, and is capable of removing grease and other foreign material from an object such as a circuit board. The tank has a heating jacket that provides heat to the cleaning fluid to raise the fluid to the vaporized state. A still is coupled to the tank by a vacuum pump. The pump circulates both liquid and vaporized cleaning fluid through the still which removes the foreign material from the fluid. The system has a pressure control system which controls the pressure of the cleaning fluid within the tank. The vacuum pump and pressure control system insure that the cleaning fluid is maintained in a desired state. The vacuum pump typically reduces the pressure of the cleaning fluid below the operating level of a conventional cleaning tank. The reduction in operating pressure provides a corresponding decrease in the saturation temperature of the cleaning fluid.

Abstract: An apparatus for washing paint spray guns and associated equipment with a liquid solvent for the purpose of cleaning and removing paint therefrom after use in painting operations. The apparatus includes a cleaning chamber having solvent dispersing nozzles therein, the nozzles being structured and disposed for spraying the liquid solvent onto exterior and interior surfaces of the spray gun, paint canister and other equipment supported within the cleaning chamber for cleaning thereof. The used solvent is collected in a holding chamber having a float switch therein which activates a solenoid controlled valve upon the used solvent reaching a predetermined level, releasing the contaminated solvent into a distillation chamber for boiling. Purified vapors pass through a condenser where they are cooled to a liquid state, yielding pure solvent which is directed into a clean solvent tank. A pump circulates the purified solvent from the clean solvent holding tank to the dispersing nozzles in the cleaning chamber.

Abstract: An improved precision cleaning method includes introducing a solvent to a cleaning vessel, placing a workpiece in the cleaning vessel and contacting the workpiece with the solvent during a residence period. The cleaning vessel is then pressurized to a target pressure by adding carbon dioxide to the vessel, and additional carbon dioxide is pumped into the vessel while maintaining the target pressure to flush contents of the vessel. Cleaning may be enhanced by pressurizing to above the supercritical point of the carbon dioxide, and cleaning is further enhanced by application of sonic energy or mechanical agitation.

Abstract: A pallet cleaner especially suitable for use in cleaning plastic pallets. The cleaner includes a vertically oriented horizontally extending chamber having a vertically oriented entry opening at one end of the chamber and a vertically oriented exit opening at the other end of the chamber. The pallets are loaded on edge into the chamber through the vertically oriented entry opening, moved through the chamber on edge while a heated pressurized fluid is directed against the upper and lower sides of the pallet, and thereafter are moved on edge out of the chamber through the exit opening. The cleaner further includes wheels so that the cleaner is portable and may be rolled to the site of pallets to be cleaned rather than requiring the pallets to be cleaned to be brought to the site of the cleaner.

Abstract: The present invention relates to a cleaning apparatus comprising a plurality of processing tanks containing cleaning liquids, a conveyor mechanism for conveying an object to be cleaned and immersing the object to be cleaned into the processing tanks, a dilutent liquid supply device for supplying a dilutent liquid through a piping-system in order to dilute waste liquid from the processing tanks, and a waste liquid sump for collecting diluted waste liquid. The waste liquid sump is provided with a temperature measurement device for detecting the temperature of waste liquid in the waste liquid sump, and the amount of dilutent liquid supplied from the dilutent liquid supply device is controlled by a temperature control device in accordance with a temperature measurement result from the temperature measurement device. The cleaning apparatus is also provided with a fixing device for joints of the piping system.

Abstract: A heat cycle type dishwasher having a housing body for the preformance of washing and cleaning processes therein, and water supplied from the main water reservoir is heated by the burner cap and distributed to the washing tub and the cleaning tub. For washing and cleaning, at first water in the main water reservoir is delivered to the upper and lower manifolds by means of the pump, for washing the dishes with the pressurized water column and detergent, and the used water is filtered and returned to the washing tub for cycle use, which is the cycle type washing process. And next clean water in the cleaning tub is delivered to the cleaning manifolds by means of the pump for the performance of cleaning process. The two processes are performed alternatively to accomplish washing and cleaning of dishes.

Abstract: A dishwasher includes a chamber containing the dishes, a heater for heating the air in the chamber, a water inlet provided on the upper side of the chamber, a drain pump for draining the water from the chamber, an air circulation passage through which the air in the chamber is circulated, a fan for circulating the air in the chamber through the air circulation passage, a dehumidifying surface capable of holding water provided in the air circulation passage, and a microcomputer for controlling the drain pump, the fan and the volume of the water supplied from the water inlet. In a drying cycle, the air heated by the heater is circulated through the air circulation passage. Since the air contacts with the water spread over the dehumidifying surface, and is cooled down, the water is condensed from the air. Therefore, when the air is heated again, the evaporation of the drops of water on the dishes increases.

Abstract: An apparatus for washing automotive, aviation, marine and general parts with a volatile solvent during maintenance, repair and rebuilding operations. The apparatus includes a wash basin with a drain to facilitate return of the solvent to a holding tank having a pump therein for recirculating the solvent back to the wash basin through a discharge spout for washing parts. A first valve assembly between the drain and holding tank closes during periods of non-use to prevent vapors from escaping to the atmosphere. During a timed recycling process, a second valve assembly releases used, contaminated solvent from the holding tank into a distillation pot where the solvent is heated under vacuum to produce vapors. The vapors pass through a condenser where they are cooled to a liquid state, yielding pure solvent, which is directed into the holding tank for future parts washing as demanded.

Abstract: A flexible air duct is connected to a dishwashing unit for conducting hot moist air therefrom. Opposite ends of the duct communicate with the dishwashing unit for conducting condensed water back thereto, while hot air is discharged through an air outlet disposed intermediate the ends of the duct. The duct is of oblong cross-section and includes cooling fins on one side.

Abstract: Precision cleaning of parts is performed with liquefiable gases, such as CO.sub.2, without the use of a complex and costly processor system. Rather, simplified and reliable performance for small scale and "low end" cleaning applications is accomplished without the use of pumps and condensers. The apparatus for removing undesired material from a chosen substrate comprises: (a) an enclosed cleaning chamber in a walled vessel for containing a liquid derived from a liquefiable gas and the substrate containing the undesired particulates and contaminants, the walled vessel adapted to withstand a maximum pressure of about 1,500 pounds per square inch (105.4 kg/cm.sup.

Abstract: An apparatus and method for dispensing solid rinse aids is disclosed. The dissolved solid rinse aid is dispensed from a dispenser (100) to a solution tank or reservoir (40) which uses the heat of a high temperature warewash machine (10) to prevent bacterial or microbial growth and degradation of rinse aid solutions held within the reservoir (40). The dispenser (100) is a solid rinse aid dissolving unit that is preferably a gravity feed device dispensing solutions to the solution tank (40) located within the warewash machine (10). The dispenser (100) is fed with hot tap water or final rinse water to dissolve the solid rinse aid.

Abstract: An aqueous parts cleaning apparatus includes a base defining a liquid-containing volume and a basin sized to be received upon an upper end of said base. The basin has a drain disposed to empty into the volume. A pump is provided for pumping liquid into the basin from the base. A heater is provided for heating liquid within the base. An oil skimming weir is provided for skimming oil off the surface of the solution within the base. A second oil skimming weir is provided for skimming oil from solution contained within said basin.

Abstract: A method and apparatus for preventing formation of solids in a tank and for removing solids contained in the tank, a pipe assembly rigidly connected to the tank for conveying heated liquids to the interior of the tank, a rotatable jet assembly rotatably connected to the pipe assembly for receiving the heated liquids from the pipe assembly and spraying the heated liquids onto the bottom of the tank.

Abstract: A flexible air duct is connected to a dishwashing unit for conducting hot moist air therefrom. Opposite ends of the duct communicate with the dishwashing unit for conducting condensed water back thereto, while hot air is discharged through an air outlet disposed intermediate the ends of the duct. The duct is of oblong cross-section and includes cooling fins on one side.

Abstract: A self-contained and integrated multi-process power spray washer apparatus to be used to clean articles placed therein, the washer apparatus including a central washing chamber which is large enough to enclose and rotate an article to be cleaned therein. A primary filter removes contaminants from a cleaning solution immediately after it has been used, and a solution reservoir receives and holds filtered cleaning solution from the primary filter. A fan forced electronic burner heats the cleaning solution contained in the reservoir, and provides a heat source for contaminant incineration. An oil skimmer removes oil and grease from an upper surface of the cleansing solution held in the reservoir, and a secondary centrifugal filter through which cleansing solution is pumped from the reservoir additionally filters the solution.

Abstract: Classifying and processing post-consumer plastic scrap materials for subsequent utilization. Post-consumer plastic scrap of various kinds, such as colored HDPE, natural HDPE, green PET and clear PET are separating into constituent fractions, and each fraction is separately reduced to flakes. At least some of the fractions are separately washed to remove fragments of labels or other foreign matter previously in place on the plastic bottles or other containers making up those scrap constituents.

Abstract: A cleaning method and cleaning system using an organic solvent such as Freon. A cleaning tank is closed after an article to be cleaned is placed within the cleaning tank. The solvent is supplied to the cleaning tank from a solvent storage tank. The article is cleaned with the supplied solvent. After the cleaning, the solvent is discharged in liquid state from the cleaning tank while vapor of the solvent which remains in the cleaning tank is discharged to a condenser to condense the vapor. The condensed solvent is returned from the condenser into the solvent storage tank. After the liquid solvent and vapor solvent are discharged from the cleaning tank, the cleaned article is taken out from the cleaning tank. The condenser is incorporated in a distiller. A solvent vapor supplying unit is connected to the cleaning tank. The thus provided closed system prevents release of Freon to the atmosphere.

Abstract: A deionized water cleaning system suitable for movement as a complete unit to different locations. The unit includes an integrated rinse and sump tank where the PC boards are washed and the water is collected. The sump is sized to allow the water temperature to be lowered before leaving the tank. The water is cleaned by a filter system which includes particle filters, deionizers, and an ultraviolet sterilizer. The cleaned water is recirculated through the tank and is allowed to be diverted through an on-demand water heater when the water is to be used for washing. A back pressure regulator assists the diversion through the heater and a float switch allows for automatic replenishing of the water in the system. All of the components are supported by a platform structure which can be easily moved.