Abstract: There is provided a fluid pump wherein in a casing at a pump unit there is provided an impeller coupled with a rotor contactless and also supported contactless by a controlled magnetic bearing unit, and rotated by a motor to output a fluid, with a position detection unit, an electromagnet or a motor stator cooled by a fluid flowing through a pump chamber.

Abstract: In an exhaust turbine of a turbocharger with a rotor mounted rotatably in a turbine casing having a spiral inlet duct with a guide vane structure including guide vanes arranged around the rotor and extending essentially tangentially to an outer and inner imaginary circular surface areas in the inflow zone and, respectively, the outflow zone of the guide vane structure, at least the trailing edges but preferably also the leading edges of the guide vanes extend at an angle to an axial line of the imaginary circular surface areas, thereby providing for a uniform loading of the rotor.

Abstract: A casing (30) for centrifugal compressors comprises a substantially cylindrical body (31) which is internally hollow and has its own central axis (32). The internal cavity of the casing (30) has an internal central axis (34) substantially coinciding with the axis of rotation of the machine and offset, in a vertical direction, with respect to the central axis (32) of the external surface of the cylindrical body (31) so that the casing (30) has an eccentric shape, having portions of different thickness, so as to create zones where the attachment point for the gas inlet counterflange (35) and outlet counterflange (36) can be formed. The invention also relates to a method for the manufacture of a casing (30) for centrifugal compressors.

Abstract: A hollow vessel 1 which is partitioned into one or a plurality of hollow chambers S by blow molding is used as a resonator 2, and the hollow vessel 1 is arranged to form a fan shroud body 3, and that a drain hole 13 is formed in a bottom portion and/or a lower side portion of the hollow vessel 1, and a communicating pipe 4 fitted to the hollow vessel 1 and an air intake duct 5 connected to the communicating pipe 4 are formed integrally with the hollow vessel 1.

Abstract: The present invention discloses a cooling system for temperature control, e.g., removing heat from electronic circuits. The cooling system includes a fan and an airflow guiding system where the guiding system includes an inlet air duct for guiding the airflow to the fan. The inlet air duct includes turbulence reduction grid for separating the air duct into a plurality of isolated flow path whereby the air turbulence is reduced. In a preferred embodiment, the airflow guiding system further includes an outlet duct for incorporating the fan therein wherein the outlet portion and the fan are directed to a direction different from the inlet air duct for guiding the airflow to the fan. In another preferred embodiment, the outlet duct and the fan are directed to a direction perpendicular to the inlet air duct for guiding the airflow to the fan.

Abstract: The present invention relates to a combined structure for a cross-flow fan comprising a rotor mounting having a magnet ring and a coil enclosed therein, a fan mounted under the rotor mounting, protrusions for attaching the fan to the rotor mounting so as to easily assemble the rotor mounting and the fan together, a stator mounting mounted above the rotor mounting, a housing, and a hook for attaching the stator mounting to the housing. The housing comprises an entry and an exit and contains the rotor mounting, the fan and the stator mounting.

Abstract: A centrifugal pump includes an impeller which is attached to a drive shaft, a multipart pump housing which is partly made of plastic material and contains an intake chamber positioned on the drive side of the impeller and a spiral-shaped pressure chamber, a bearing support disposed in the region of the intake chamber being made of metallic material, and the pump housing is provided with an intake flange on the drive side and a housing cover in the region of the pressure chamber. In order to reduce weight and manufacturing cost, the intake chamber is bounded on the one hand by the bearing support and on the other hand by a housing part which is made of plastic material and surrounds the bearing support to which it is connected, preferably so as to be detachable.

Abstract: The angular extent of the flow path in a fan scroll is extended by reducing the rate of radial expansion of the flow path. By extending the angular as circumferential extent of the scroll flow path downstream of the fan impeller ANC structure can be located in/on the scroll while being located a sufficient distance downstream of the impeller. The flow path length can be increased without increasing the cubage of the scroll and, if desired, a further flow path increase can be achieved by a combination of the reduced rate of radial expansion together with increasing the cubage.

Abstract: A pump comprises a housing having a shaft bore and a pump chamber, a bearing provided for an inner periphery of the shaft bore, a shaft rotatively supported by the shaft bore through the bearing, and a transporting member connected to one end portion of the shaft for transporting fluid by imparting mechanical energy to the fluid sucked in said pump chamber.

Abstract: A gas turbine engine ducted to have the air pass sequentially through a single stage axial-flow compressor, a single-stage hybrid axial-radial centrifugal compressor, a burner, an inward flow radial turbine, an axial-flow, high-pressure turbine, and then exit nozzles. The axial compressor and axial turbine are on a common core shaft. The centrifugal compressor and the radial turbine are on a common porous hub and form an integral, modular unit in which forces on the radial turbine blades drive the centrifugal compressor. The porous common hub permits air to transpire from the compressor to the turbine, serving to cool the turbine. Fuel is burned in annular, "folded-comma" shaped burners with multiple fuel-injection and ignition zones (two stage combustion).

Abstract: A centrifugal fan for a motor vehicle has a fan rotor driven in rotation by an electric motor and lodged in a central part of a casing. The outer walls of the casing define, in conjunction with a peripheral portion of the rotor, a volute for channeling air which is delivered by the rotor in a tangential direction. The outer wall of the casing includes a longitudinal side wall portion formed with through apertures constituting diversion ports, for taking off some of the air delivered by the rotor and diverting this air through an external duct fixed to the casing and open into the central region of the latter, so as to cool the motor.

Abstract: There is disclosed a housing for a centrifugal fan or blower or the like. The housing includes a wedge member for reducing the tonal noise generated during operation of the fan or blower. The wedge member is disposed on an interior surface of the housing chamber.

Abstract: Scrolls separable radially, to enable cleaning and polishing of the inner surfaces of the throat area, are disclosed. In one of the embodiments, an inner structure of the scroll intrudes into the throat area for selectively reducing the area, in order that flow, pump head, and speed can be matched.

Abstract: A blower housing body is disclosed comprising a housing body and housing cover. The housing body and housing cover are provided with mating surfaces that provide the ability to releasably lock the housing cover to the housing body to allow ease of disassembly for basic maintenance and re-assembly for continued use. The locking mechanism is accomplished by a ridge formed on the top of a side wall of the housing body and a corresponding channel in the housing cover.

Abstract: A blower assembly includes a motor cover having (1) a body portion defining a motor cavity, (2) an air flow guide surface connected to an end of the body portion, the guide surface extending radially outwardly from the body portion, and (3) a cooling duct integrally formed with the body portion and having an inlet and an outlet, the inlet being located at the end of the body portion and the outlet being defined in a sidewall of the body portion. The blower assembly further includes a motor positionable in the motor cavity, the motor having a motor shaft having a central axis. In addition, the blower assembly includes a fan housing is connected to the motor cover, wherein (1) the fan housing defines a scroll cut-off line, and (2) a plane passes through the scroll cut-off line and the central axis, and (3) the cooling duct is positioned adjacent to the plane.

Abstract: An improved liquid rotor device is provided having a cylindrically-shaped hub, which is supported by a horizontal shaft, and having several curved blades which are attached to the outer portions of the rotating hub. The horizontal shaft preferably rotates with the hub so that it can mechanically drive a device such as an electrical generator. The multiple blades mounted to the exterior surface of the hub are curved such that the longitudinal axis of each blade is parallel to the axis of rotation (i.e., the horizontal shaft). Each blade is arcuate in shape and preferably comprises a portion of the cylindrical wall of a hollow cylinder. In one embodiment of the, the rotating hub and blades sub-assembly is surrounded by a hollow cylindrical housing that is entirely submerged in a liquid, such as water. The surrounding hollow cylindrical housing has an inlet to receive the liquid into the area of the rotating blades and an outlet through which the liquid is discharged.

Abstract: A heat dissipator accessory for a notebook computer, which is concealed in an expansion slot of a notebook computer to effectively dissipate heat generated by the computer, is disclosed. The external heat dissipator for a notebook computer comprises a cooling module inserted into an expansion slot of the notebook computer. The cooling module includes a flat body having a connector electrically connected with a signal socket disposed in the expansion slot of the notebook, a cover disposed on the flat body and an air duct attached on the cover and mounted to the flat body. The flat body defines therein a chamber for receiving a fan and an air passage in communication with the chamber. The air passage has an air deflector transversely mounted at an end thereof for changing the direction of horizontal air flow. The cover defines a hole aligning with the fan chamber of the flat body and forming thereon a beveled portion corresponding to the air deflector.

Abstract: An air fan capable of increasing the amount of air fed in a radial direction thereof. An impeller which includes a plurality of blades for sucking air from one side in an axial direction of a revolving shaft of a motor and guiding sucked air mainly toward the other side in the axial direction is mounted on a rotor of the motor. A casing includes a peripheral wall arranged so as to define a cavity therein in which the motor and impeller are received. A cavity is closed at each of both ends in the axial direction with a closing wall. The peripheral wall is provided at a portion thereof in proximity to an end thereof on the one side with a lateral suction port which permits air to be suckedly introduced therethrough into the cavity in a radial direction of the revolving shaft.

Abstract: A suction port (2a) of the pump is submersed in an open-top cylindrical casing (3) coaxial to the impeller axis and equipped with a liquid inlet pipe (4) tangentially discharging the liquid into the casing in the direction of the impeller rotation. The lower portion of the cylindrical casing wall (3d) and/or the liquid inlet pipe (4) is designed in the form of a channel or pipe following a radius with center inside the casing, so that the swirling flow generated inside the casing (3), and the inlet flow that enhances said swirling flow, are concentrated and their liquid levels dynamically forced into a vertical level.

Abstract: A micromachine comprises at least one heat generating unit arranged on the surface of a substrate, a housing for retaining liquid having a liquid retaining portion along the heat generating unit, and a rotator rotatively supported in the liquid retaining portion of the housing for retaining liquid. This rotator is structured to rotate by way of the boiling of liquid in the liquid retaining portion by heat generated by the heat generating unit. The micromachine, such a micropump or a micromotor, is incorporated in a liquid jet recording head to cause recording liquid to flow compulsorily in order to remove accumulated bubbles in the liquid paths for maintaining good performance of the liquid jet recording head at all times.

Abstract: An inline centrifugal pump comprising a radial or semiaxial impeller. The rotational axis of the impeller is perpendicular to the flow axis of the connection pieces. A suction channel leading from the suction connection of the pump housing to the suction mouth of the impeller comprises, in the turning region, a conically tapering section which runs towards the suction mouth of the impeller. In this manner the efficiency of the pump can be improved.

Abstract: A pump impeller is adapted for rotatably mounting within a volute of a centrifugal slurry pump. The pump impeller has an intake opening that is formed coaxially with an axis of rotation of the impeller. The impeller also has an outlet opening that extends about the periphery of the impeller and blades that extend generally radially between the intake opening and the outlet opening. The region between adjacent blades defines a respective blade passage through which slurry flows upon rotation of the impeller. The impeller is dimensioned relative to the volute so that the ratio of the blade passage width at the entry of the blade passage to the blade width passage at the periphery of the impeller is in a range of 1.5 to 1.7, and the ratio of the diameter of the impeller to the blade passage width is in a range of 9.3 to 10.2 and that the ratio of the impeller diameter to the width of the volute is in a range of 3.8 to 4.2. This dimensioning enables the pump to operate in a specific speed range of 22 to 30.

Abstract: A blower assembly includes a motor cover having (1) a body portion defining a motor cavity, (2) an air flow guide surface connected to an end of the body portion, the guide surface extending radially outwardly from the body portion, and (3) a cooling duct integrally formed with the body portion and having an inlet and an outlet, the inlet being located at the end of the body portion and the outlet being defined in a sidewall of the body portion. The blower assembly further includes a motor positionable in the motor cavity, the motor having a motor shaft having a central axis. In addition, the blower assembly includes a fan housing is connected to the motor cover, wherein (1) the fan housing defines a scroll cut-off line, and (2) a plane passes through the scroll cut-off line and the central axis, and (3) the cooling duct is positioned adjacent to the plane.

Abstract: An energy efficient housing assembly employing a single inlet backwardly inclined blower fan for use in commercial HVAC units. The housing assembly is provided with a slanted wall to which a fan supply motor is slidably mounted. The slanted wall, in conjunction with an opposite non-parallel side wall, two other walls and a top plate form an enclosed area in which the fan is rotatably mounted. Air enters the fan in a straight path through a single front inlet opening provided in the assembly and exits the assembly via a large bottom discharge opening. Air flowing out the bottom discharge opening is evenly distributed over heating elements provided in the unit adjacent to the assembly. The assembly is slidably mounted in the unit for ease in removing it from the unit.

Abstract: A radial-inflow large volume-rate low pressure-differential, single-stage compressor comprising 2 periphiral concentric sets of axial blades spaced circumferentially between two supporting rings and further strengthened against bending by intermediate rings if necessary. The outer set of blades rotates to impart energy to the working fluid and the inner set is stationary to recover kinetic energy. Stationary guide surfaces concentric with the blades direct the radially inward flow to axial. A diverging duct recovers further the kinetic energy. The compressor fills the pressure-ratio gap between blowers and turbo-compressors. Its use in desalination instead of the currently used centrifugal compressors, can scale-up the vapor-compression unit-size to more than three fold.

Abstract: In a refrigeration system in which coils are mounted in a coil passage, a fan system is provided by which air is caused to pass over the coils. The fan system includes a housing communicating with a coil passage. The housing has an intake and an outlet each with a mouth, the mouths of the intake and outlet being oriented substantially 180.degree. from on another. A centrifugal scroll caged blower is mounted in the housing and an electric motor is connected to rotate the blower. Baffles are provided within the housing for directing air in separate paths through the housing intake to an inlet of the blower and from the blower through the housing outlet, the flow of the air through the housing mouths lying in substantially parallel planes.

Abstract: A cyclone-turbine of the stator-rotor type comprising a rotor with mobile blades inside the cage of a stator with fingers of rectangular section, characterized in that a throttling disk is positioned between the cage of the stator and the stack above the cyclone-turbine.

Abstract: A pump casing made of sheet metal has a substantially cylindrical cup-shaped sheet-metal pump casing having a bottom on one axial and thereof and an opening defined in an opposite axial end thereof. The interior of the pump casing is divided by a partition wall disposed therein into a suction chamber and a hydrocasing chamber with an impeller rotatably housed therein. A suction nozzle is mounted on a cylindrical side wall of the pump casing and communicates with the suction chamber. The partition wall is joined to the bottom of the pump casing. The suction nozzle is positioned over the suction and hydrocasing chambers.

Abstract: A high-strength, thin-wall ceramic cylinder partially closed at one end, with radial-inflow turbine blades ground into the partially closed end thereof, provides the rotational drive, surface protection, and burst strength necessary to contain and spin a low strength, disposable soft ceramic capsule, loaded with a sample for NMR experiments, at high rotational speeds inside an NMR receiver/transmitter coil. An improved radial inflow turbine design results in higher efficiency for micro-turbines. A cylindrical air journal bearing at both ends provides radial stability and support. An axial thrust air bearing is formed at the end opposite the turbine blades between the sacrificial bottom of the soft capsule and a thrust ring. The high-strength ceramic is typically of a partially stabilized zirconia or hot pressed silicon nitride. The disposable capsule is typically of hexagonal boron nitride.

Abstract: A noise cancellation device for a centrifugal blower comprises a rod mounted in the output of a blower and generally axially parallel to the impeller so that as the impeller rotates, the blades of the impeller sweep past the rod much as in the manner that the blades sweep past the cutoff section of the blower outlet. The rod is positioned a specified distance away the cutoff such that it generates a tone which interferes with the pure tone otherwise generated by the impeller blades sweeping past the cutoff in an out of phase condition to thereby eliminate the pure tone or "spike" normally experienced at a fundamental frequency and harmonics thereof.

Abstract: A water actuated outdoor fan which includes a plurality of radiating blades for creating a current of air, and a water turbine for converting the kinetic energy of moving water to mechanical power to operate the plurality of radiating blades.

Abstract: A fan has a casing (1) having walls defining a flow duct which accommodates a multiple-disc rotor (1) mounted for rotation about the axis (3) thereof. The flow duct also accommodates baffles provided on opposite sides of the rotor (1) to extend along its axis (3). According to the invention, the casing (7) is mounted for rotation about the axis (3) of the rotor (1). The fan is useful for controlling air-exchange in living space or industrial production space.

Abstract: Inefficiencies in the operation of auxiliary power units producing electric and hydraulic power along with bleed air resulting from independence in the demand for power may be minimized in a system including at least one bleed air consuming system (84, 86), an electrical generator (92), a hydraulic pump (90), and a turbine wheel (10, 20) for driving the generator (92) and the pump (90). Also included is a combustor (32) for receiving fuel and compressed air and producing gases of combustion to drive the turbine wheel (10, 20). A rotary compressor (10, 14) is coupled to the turbine wheel to be driven thereby. The compressor (10, 14) is a radial discharge compressor with an impeller having blades (14) extending from an inlet end (40) to a discharge end (42) and a shroud (18) to the blades (14). Two axially spaced annular ports (44, 46; 44, 50) are adjacent the discharge end (42).

Abstract: A cooling water pump for a pump housing of an internal combustion engine includes a bearing cover that can be fixed within a bore of the pump housing. The pump also includes a pump shaft and a bearing. The pump shaft is rotatably mounted in the bearing. An impeller and a pulley are each coupled to the pump shaft, and the impeller has an inlet opening that is circular in shape and concentric with the impeller. The inlet opening is disposed at the end of the impeller that faces the pump housing in the axial direction. A first concentrically formed covering covers the impeller and is impermeable to liquids flowing in the axial direction. The first covering is disposed in first zones located radially beyond the inlet opening, and the impeller is open in second zones located on a side of the impeller axially opposite the first covering.

Abstract: A small high capacity centrifugal pump for the transfer of liquids is disclosed. The pump has a circular pump chamber, a hole (bored off center relative to the diameter of the pump chamber) for installation of the drive shaft component, the outlet and inlet nozzles of very large internal diameter. The impeller is a foraminous sleeve formed as a one piece casting of a width slightly less than the impeller's diameter. It is threaded at its inboard end for mounting onto the threaded end of the impeller mounting fixture, and are open at its opposite end, except for a narrow circular integral ring which serves as a sealing member between the rotating impeller and the stationary pump chamber wall.

Abstract: A pump which includes a housing and a shaft disposed within the housing having an axis. The apparatus also includes apparatus for mounting the shaft within the housing for rotational movement thereof and an impeller having a geometric center carried on the shaft. A fluid inlet in the housing is disposed with a first opening disposed in eccentric relationship to the geometric center of the impeller. In some forms of the invention the opening is generally shaped like a dog bone with the two largest parts thereof spaced apart from the geometric center of the impeller.

Abstract: A noiseless fan having a group of parallel and thin, closely spaced disks rotatable at relatively high speed. As the disks rotate, boundary layers of air on the disk surfaces rotate bodies of air between the disks while centrifugal force developed by the rotating disks drives the air radially outward to be expelled into the atomosphere. Intake air is admitted axially through central openings in the disks and is directed radially outward into the spaces between the disks to displace the expelled air.

Abstract: A process and system for separating and removing volatile organic compounds (VOCs) from groundwater, where said groundwater is polluted by immiscible liquid floating on the water table and by solutes within the water. The process includes pumping the contaminated water through a separator and low pressure tank assembly, that separates silt, sand, and liquid VOCs from the water. The water is pumped through an air stripper to remove the dissolved volatiles from the water. The recovered liquid VOCs from the pressure tank are suitable for processing or reuse. The volatiles liberated from the water in the air stripper are released either to the atmosphere or routed to pollution abatement devices as required by environmental rules. The decontaminated water is released to a sewer system or to the environment.

Abstract: A pipe diffuser is used in a centrifugal compressor in such a way as to obtain high efficiency over a broad operating range. The number of channels in the pipe diffuser is limited such that the wedge angle is relatively large and therefore not susceptible to flow separation at the leading edges thereof. The vaneless space between the impeller and the leading edge circle of the diffuser is limited in its radial depth such that the flow separations are further inhibited. Finally, the impeller has a relatively high backsweep such that the absolute flow exit angle is relatively low, thereby reducing the sensitivity to lower flow conditions.

Abstract: An air mixer having a rotor with upper and lower horizontally oriented blades which draws air from above and below into the interior of the rotor so that thorough mixing occurs, after which the mixed air is expelled laterally by vertically oriented blades into the surrounding area and minimizes thermal stratification and other such conditions in the surrounding area.

Abstract: An apparatus for separating and recovering floating liquid wherein one or more vortex guide plates are horizontally held on the surface of the water inhibiting their rotation, the lower members of the guide plates are submerged under the surface of the water, an enveloping cylinder at the center of vortex has its upper end suitably positioned under the surface of the water and has its lower end submerged deeper than the peripheral guide members, a suction tube for recovery is provided in said cylinder, a rotary impeller is provided under said cylinder in concentric with the vortex guide plates and is rotated in the enfolding direction of the vortex guide plates, and wherein a cylindrical cover is provided between said guide plates and said impeller, said cylindrical cover having an opening in the upper end surface thereof with its diameter being smaller than the diameter of the impeller and further being open at its lower end.

Abstract: In a mechanical driving mechanism of a supercharger (1) for an internal combustion engine, which, starting from the internal combustion engine, acts on a rotor shaft (12) of a rotor (14) located on a supercharger housing through a planetary gear assembly (3) that is geared up, a compact construction of the driving mechanism and a balancing out of vibration between a primary shaft (2) and the rotor shaft (12) can be achieved. For that purpose, a ring gear (6) is propelled by the primary shaft (2), while the rotor shaft (12) that receives a sun wheel (8) is accommodated in a hub part (15) of a pinion cage (16) of the planetary gear assembly (3).

Abstract: A pump has an impeller with a circular series of airfoil vanes rigidly mounted thereon. The impeller is mounted in a casing which has a radially outwardly increasing internal axial extent, such that fluid flowing through the pump has a less constricted path peripherally of the pump chamber than centrally of the pump chamber. In another aspect of the invention, the impeller comprises two axially adjacent series of vanes separated by a radially extending partition which divides the interior of the pump casing into a vacuum chamber and a pressure chamber interconnected by a hole formed in the center of the partition. At least one of the central partition and the impeller plate are conical in shape, thereby to impart a radially outwardly expanding axial extent to the vacuum chamber, and a decreasing axial extent to the pressure chamber.

Abstract: The metal plate stator case (1), for radial centrifugal pumps, includes a main body (2), a diffusion volute (10), an axial suction inlet (3) and a radial discharge outlet (4) at the output of the diffusion volute. The volute is constituted by a circumferential channel (11) which is defined in the lateral wall of the main body and has a radial transverse cross section which increases uniformly toward the output of the volute. At least one portion of the channel has, in transverse cross section, a substantially constant radial depth and a uniformly increasing axial width.

Abstract: A casing for use in an in-line centrifugal pump has two mirror symmetrical shell-shaped sections which jointly define a suction inlet at one end and an outlet at the other end of the casing. A partition is located in the symmetry plane of the two sections to define a suction chamber with one of the sections and a pressure chamber with the other section. The partition has a first shroud which extends into the inlet and is disposed at one side of the symmetry plane, and a second shroud which extends into the outlet and is disposed at the other side of the symmetry plane. The symmetry plane is normal to the axis of the pump shaft, and the other section has an aperture for a portion of the housing of a pump stage or for an impeller. Such aperture is in register with a centrally located opening which is provided in the partition and extends between the two chambers, The marginal portions of the partition are soldered, welded or glued to outwardly extending flanges of the sections.

Abstract: A centrifugal pump for accommodating entrained gas and vapor at low absolute suction pressures includes an impeller with a central inlet chamber. The impeller has a peripheral wall which is concentric with the impeller's axis; and, at least one passage extends outwardly from an inlet port in the peripheral wall to an exit port radially spaced from the chamber. Preferably, the pump includes a stationary inlet port device located within the central inlet chamber for separating the spinning impeller from incoming fluid.

Abstract: A blower for conveying material includes a housing and a spout. The housing has a front wall, a rear wall and an arcuate side wall extending between the front and rear walls. A plurality of arms with paddles mounted thereon are rotatable within the housing to discharge material through the spout. Springs are provided to urge a portion of the housing side wall into a normal position while permitting this side wall portion to be flexed outwardly if a foreign object such as a rock impacts against the inside of the housing side wall with enough force to overcome the springs. Permanent deformation to the housing is thus prevented by the springs.

Abstract: When maintaining a flow of a mixture of products consisting of a liquid of low to medium viscosity incorporating solid particles at a certain temperature and for a certain period of time the mixture remains for some time in a vessel of a substantially cylindrical shape. The residence time in the vessel of the solid particles mixed with the liquid is controlled separately from the liquid in that the solid particles are carried through the vessel at a regulable speed, independently of the speed of flow of the liquid through the vessel, with the aid of a rotatable conveyor means which is permeable to liquid but not to the solid particles and whose axis of rotation coincides with the axis of the vessel. The solid particles remain mixed with the liquid. The residence time of the solid particles is regulated such that the core of the solid particles attains the same temeprature as the liquid, without the liquid remaining for too long a time at the desired end temperature.

Abstract: A vessel (1) for impregnating water with carbon dioxide is pressure-tight and has inlets (4, 5) for water and carbon dioxide. Within the vessel, a cooling surface (9) is provided, connected to an external refrigeration circuit. Within the vessel and below the level of water, an underwater pump (15) is provided for producing a circulation of water inside the vessel. Carbon dioxide in finely divided form is introduced into the flowing water, preferably via the pump (15) for producing the water circulation. In use, an ice jacket (11 ) forms on the cooling surface (9).

Abstract: A cleaning system for a combine having a plurality of cleaning sieves which are operated to arrange grain in a thin veil or crop mat on the sieves. The cleaning system of the present invention includes an elongated transverse cleaning fan and an air plenum. The cleaning fan is rotatably driven about a fixed axis and includes a plurality of spaced apart blades peripherally disposed about the fan. The air plenum extends parallel to and along substantially the entire length of the fan for directing a forced flow of air from the fan rearwardly through the cleaning sieves. The air plenum includes upper and lower air directing baffles.