Abstract: A drive unit for hydraulic consumers for individual structural component parts of a machine for producing shaped articles from molding materials, including a motor, a pump driven by the motor, and a carrying part configured to connect at least one of the pump and the motor to the machine. The carrying part has a pipe-shaped area which is closed at both ends by at least one of a bottom and a cover. At least the pump projects into the carrying part and is enclosed by the carrying part. The pump is attached to the carrying part on a side facing away from the motor. A portion of the carrying part is constructed as a connection block.

Abstract: The invention concerns a sealing- and cooling system for a submersible machine, such as a pump or a mixer.

Abstract: A thermal barrier for a nuclear reactor coolant pump includes a stack of pancake cooling coils encircling the pump shaft where it enters the pump chamber. This stack of coiling coils has an irregular peripheral surface formed by axially extending, diametrically opposed, inlet and outlet tubes which are circumferentially indexed for each pancake coil. The inner surface of a cylindrical cover has a complimentary inner peripheral surface formed by two sets of diametrically opposed cascaded steps so that the volume of the annulus between the coil stack and cover is minimized to reduce stratification of cooling water injected into the cover. A collar around the pump shaft at the opening in the end wall of the cover extends axially into the coil stack to prevent vortices produced by the spinning shaft from flowing across the end wall of the cover, while circumferentially spaced holes in the collar prevent significant alteration of the thermal conditions of the pancake coiling coils.

Abstract: A pump for a cryogenic liquid, in particular liquid oxygen, includes a hydraulic motor which is supplied with a motor liquid under pressure and drives a wheel for pumping the cryogenic liquid, and relative sealing device preventing contamination of the cryogenic liquid by the motor liquid.

Abstract: An adjustable shroud arrangement is disclosed for a submergible pumping system. The pumping system is of the type used to raise fluids from wells, such as petroleum production wells. The systems include a plurality of interconnected components, including a motor and a pump driven by the motor. The systems may also include a separator for separating production fluids from non-production fluids. The shroud serves to transfer fluids between system components, such as around the motor to promote convective cooling of the motor during operation. The shroud fits around a portion of the pumping unit to define a fluid flow path. The shroud is adjustable with respect to the pumping unit to permit relative thermal expansion and contraction of the shroud and the pumping unit components. In a preferred embodiment, the shroud has one end fixed to the pumping unit and a second end slidingly seals against a component of the pumping unit.

Abstract: A system for pressurizing and pumping a fluid that may undergo substantial variations in temperature utilizes a motor with an enclosed rotor disposed adjacent and in driving relation to a centrifugal pump, but thermally isolated even though the fluid being pumped serves to establish hydrodynamic effects at large journal bearings supporting the rotor and the pump. The rotor is in magnetic interchange relation with an associated stator through a magnetic housing which, together with a pump mount coupling the motor to the pump, is fully encloses, apart from pump inlet and outlet apertures. The pump mount includes a low diameter neck portion about the shaft teat has low axial heat conductivity, thus providing an isolation spacing that also is filled with insulation material to eliminate significant convective heat transfer.

Abstract: A paint spraying device has a housing with two halves and a hydraulic device mounted in the housing. The hydraulic device includes a valve system and a pump for conveying a medium to be sprayed. The pump is loaded by a hydraulic medium. A vertical plate flange has a first and second end and is connected by the first end to the hydraulic device. The second end of the vertical plate flange comprises a first support leg projecting from the housing. A drive motor is positioned in the housing for driving the pump and is connected to the vertical plate flange. The housing has at least one second support leg remote from the first support leg. The halves are fixedly connected to the hydraulic device.

Abstract: The invention concerns a pump for conveying hot media wherein the pump has a pump housing, a seal housing (13, 14) disposed at a distance from the pump housing and is connected thereto, a bearing housing (19) connected to the pump housing via a Chinese lantern-shaped structure (7, 17, 18) and is disposed at a spacing from the seal housing, a fan wheel (22) disposed in the spacing, and a shaft (4) which penetrates the aforementioned parts. The delivery direction of the fan wheel extends from the connection between the pump housing and the seal housing (13, 14) towards the bearing housing (19) to enhance the cooling of the seal housing (13, 14) and of the bearing housing (19). To further enhance the thermal cooling properties, the drive motor is screed from the heated air flow by the bearing housing (19) and by a heat-insulating device (10) on the pump housing.

Abstract: A compressor having a compression mechanism within a housing for compressing a refrigerant gas according to the rotation of a rotary shaft operatively connected to an external power source. A pulley is mounted on the rotary shaft and located on one side of the housing for transmitting power from the external power source to the shaft. A fan sends air to the outer surface of the housing by rotating with the pulley. Heat transferring fins are provided on the housing adjacent to the fan.

Abstract: A pump for low-viscosity fuel comprises a pump shaft 6 installed in a pump housing 2, 3, 4 and divided into a drive-side shaft 6A and a driven-side shaft 6B, a partition 12 provided between the drive-side shaft and the driven-side shaft of the pump shaft to prevent leakage of fuel from the housing, and a magnetic coupling 13 for transferring torque from the drive-side shaft to the driven-side shaft of the pump shaft through the partition, the magnetic coupling being disposed such that a first clearance C1, D1 between the magnetic coupling and the partition is larger than a second clearance C2, D2 between the magnetic coupling and the pump housing. When wobble occurs in the pump shaft owing to wear of the sliding contact portions thereof, the magnetic coupling makes contact with the pump housing before contacting the partition, thereby enabling the rotation of the pump shaft to be stopped before fuel leakage occurs.

Abstract: A vacuum pump has a pump casing having a suction side where a suction port is located and a discharge side where a discharge port is located, a pump assembly housed in the pump casing and comprising a pair of pump rotors rotatable in synchronism with each other and having respective shafts, and a brushless direct-current motor mounted on the pump casing at a suction side of the pump casing. The motor has a pair of motor rotors comprising respective sets of permanent magnets which are mounted respectively on the shafts, a pair of cans surrounding outer circumferential and end surfaces of the motor rotors in sealing relation to the pump assembly, a motor stator mounted on the cans and housed in a water-cooled motor frame.

Abstract: A pump assembly for a liquefied gas system. The assembly has a housing which contains a seal that separates a motor chamber from a pump chamber. Located within the pump chamber is a pump device that pumps the liquid gas from an inlet port to an outlet port of the housing. The pump device is driven by a motor located within the motor chamber. The assembly includes a heat exchanger that heats any liquid gas that leaks into the motor chamber. The heat exchanger heats the liquefied gas within the motor chamber to a temperature above a critical temperature of the gas, so that the gas does not remove the lubricants from the motor. The heat exchanger can also remove heat generated by the motor to maintain the motor temperature within an operating range.

Abstract: A centrifugal pump system for moving hot media includes a pump section, a motor section and mounting elements holding the pump and motor sections together. A force is formed by the mounting elements that is transmitted between the pump section and the motor section. A heat barrier is positioned between the pump section and the motor section. The heat barrier includes an insulating ceramic element. The force transmitted between the pump section and the motor section is transferred through the ceramic element.

Abstract: A high temperature, centrifugal pump includes a thermally isolated and dynamically air cooled shaft seal. Carbon graphite insulators formed of plural elements juxtaposed together (46) insulate the seal assembly (34) from the pump housing (16). A hollow drive shaft limits heat conducted from the impeller during operation while a fan (56) forcibly flows air past the seal assembly to conduct heat energy away from the shaft seal. The insulator (46) reduces heat energy conducted to the seal assembly (42).

Abstract: A portable, hand-held blower/vacuum unit has a housing structure defined by an upper engine shroud removably connected to the top wall of a lower impeller housing. Disposed within the shroud is a small internal combustion engine having a vertical crankshaft which extends downwardly through a depending well section formed on the top wall of the impeller housing, the lower shaft end being drivingly connected to a centrifugal fan impeller positioned within the impeller housing and operative to force a flow of ambient air therethrough. The engine is resiliently and floatingly mounted within the shroud by a resilient support system which prevents rigid contact between the engine and the shroud or the impeller housing to thereby substantially reduce engine vibration transmitted to the housing structure, and permit deflection of the engine relative to the housing structure to lessen the possibility of engine damage caused by impeller impact from ingested objects.

Abstract: An engine compressor comprising an internal combustion engine with a drive shaft; a compressor with a head and a cylinder; and a device for ventilating the head and cylinder, and having: an impeller fitted on to the drive shaft; a housing mounted between the casings of the engine and the compressor, and defining an internal chamber housing the impeller; an inlet formed in a central position of the housing and through which ambient air is drawn; and an outlet formed in the top portion of the housing and through which air is fed to the head and the cylinder.

Abstract: A heat-dissipating coupling securing first and second shaft sections together for co-rotation and inhibiting heat transfer between the shaft sections. In an exemplary embodiment, the coupling includes a first coupling half secured to the first shaft section, and a second coupling half secured to the second shaft section. A plurality of air ducts extending generally transversely of the rotational axis of the shafts are formed between the first and second coupling halves. The ducts may be formed by grooves in the first coupling half, which are closed by a planar surface of the second coupling half. The ducts extend generally radially, and may be straight, or curved concavely or convexly with respect to the direction of the rotation of the shaft sections. Air may be supplied to the air ducts by providing one of the shaft sections as a hollow shaft in fluid communication with the coupling. Alternatively, air may be supplied to the ducts via a plurality of air inlet holes formed in the coupling itself.

Abstract: A multi-section vacuum pump includes a pump portion, an intermediate shaft portion provided between the pump portion and an external drive shaft, a drive shaft portion including a drive shaft having a drive gear for driving the intermediate shaft portion and a shaft seal structure on the drive shaft, and a gear box accommodating the timing gear set, the intermediate gear, and the drive gear and allowing the lubricating oil to be reserved at the bottom thereof. The drive shaft portion includes, at the bottom of the drive shaft in the shaft seal structure, oil supply for supplying lubricating oil to an oil reservoir having an oil overflow opening communicating with the gear box, a lubricating oil path for introducing the lubricating oil reservoir being provided having an oil overflow opening communicating with the gear box, a lubricating oil path for introducing the lubrication oil to the oil reservoir being provided inside the drive shaft.

Abstract: An immersion pump assembly comprises a pump and a wet-rotor motor driving the pump. The motor and the pump have a common shaft which is closable and hollow and which is partly filled with a fluid, for dispersal of waste heat from the rotor chamber of the motor into a heat sink provided by the liquid to be conveyed by means of the pump. The shaft together with the fluid constitutes a rotating heat pipe system.

Abstract: A lubrication pump includes a reservoir 2 for a supply of lubricant, the reservoir having an outlet 5 at its lower end. A motor 10 is situated within the reservoir 2 and a thermally-conducting heat distributor 19 is mounted in thermal communication with the motor 10 to extend outwardly beyond the motor in the region of the bottom of the reservoir 2. Heat produced by operation of the motor 10 is distributed by the heat distributor 19, thereby reducing temperature differences in the lubricant within the reservoir 2 and improving the flow of lubricant to the outlet 5.

Abstract: Asymmetrical shaded-pole motor (1) with a stator (2) consisting of a laminated core is formed from a C-shaped yoke, between whose free yoke prongs (7, 8), a yoke stay (4) is inserted, on which a main winding sits. A short-circuited auxiliary winding (9) is provided in the leg connecting the yoke prongs, and in a recess in this leg, there is a laminated squirrel-cage rotor (3) with a small air gap to the stator (2), mounted so it can rotate on a motor shaft (17). The squirrel-cage rotor (3) is designed as a hollow cylinder and directly surrounds coaxially a bearing supporting tube (13) that is connected to the stator (2) and projects into its interior from the open end, such that the motor shaft (17) is guided by bearings (14) in it, and is connected to the rotor (3) on the end opposite the bearing supporting tube (13).

Abstract: Deposits and corrosion are to be avoided in a heatable diaphragm pump for smoke gases which are to be analyzed. A heatable pump head comprises a diaphragm chamber which is closed by a diaphragm. The diaphragm is driven by a motor through a connecting rod. The connecting rod is heated by controlled heating means and a temperature sensor. Transmission of measuring signals from the temperature sensor to a controller and the power supply to the heating means is permitted through U-shaped leaf springs.

Abstract: An aquarium filter assembly having a filter box with an impeller unit. An encapsulated electromagnetic power unit is removably coupled to the filter box for driving the impeller unit. The power unit is thermally separated from the filter box to prevent damage to the filter box as a result of the heat generated by the power unit.

Abstract: A device for mounting a motor to the wall of a refrigerator whereby the motor is supported on the exterior side of the wall and is provided with a long output shaft which extends through the wall and is supported in a bearing assembly carried by a thermal barrier which maintains stable rotation of the shaft and prevents motor heat from flowing to the bearing assembly.

Abstract: A thermal barrier which is interposed between the casing of a pump and the housing of a motor has a first section which resembles a spool and includes a first flange sealingly connected to the casing, a second flange sealingly connected to the housing and a hollow cylindrical core spacedly surrounding the pump shaft between the two flanges. The first section serves primarily or exclusively to establish a seal between the pump casing and the motor housing, and the thermal barrier has a second section which takes up stresses and further serves as a heat insulating and/or heat dissipating device. The second section is removably installed in the space between the two flanges of the first section and spacedly surrounds the core. The second section may be constituted by hollow cylindrical walls, one or more stacks of washers or rings, one or more annuli of parallel tubes, bars, rods, ribs or a combination of such elements.

Abstract: This is a device for aerating water comprising (1) a fan within a pumping chamber for drawing air through an intake port and forcing air out an exhaust port therein, (2) a fan enabling means located outside the pumping chamber for moving the fan so that air is drawn through the intake port and out the exhaust port, (3) a means for insulating the pumping chamber from the heat created by the fan enabling means, and (4) a means for dispersing the air flowing out of the exhaust port and into water.

Abstract: A combination heat shield/gasket is disposed between abutting components in a reciprocating compressor. The heat shield/gasket includes strategically located protuberances, at locations where the components do not directly abut, the tips of which contact one of the components causing the heat shield/gasket to locally deflect away from the contacted component. The deflection of the heat shield/gasket at such non-abutting locations causes a dead space to be created between the component contacted by the tip of the protuberance and the heat shield/gasket. The dead space so created is a barrier to the transfer of heat, as is the heat shield/gasket itself, from the component contacted by the protruberances to the area on the side of the heat shield/gasket opposite that side on which the dead space is created.

Abstract: A submersible motor pump wherein the thermal barrier between the pump housing and the motor housing contains at least one bellows or at least one cylinder and piston unit storing a supply of liquid for admission into the motor housing so as to maintain the motor housing in filled condition. The contents of the motor housing are circulated and cooled by a high-pressure cooler, and the liquid which is to be conveyed from the pressure equalizing device into the motor housing when the pressure of liquid in the pump housing rises is admitted into the motor housing by way of the cooler so that it is cooled prior to entering the motor housing.

Abstract: A liquid metal mechanical pump having therein a liquid metal free surface and a cover gas space over the liquid metal free surface and which is equipped with an emergency syphon system. This system has a syphon pipe and a liquid metal dump tank disposed outside the pump. The syphon pipe connects the pump and the dump tank so that the liquid metal in the tank flows out into the dump tank when the free surface of the liquid metal in the pump rises to a predetermined level higher than that of the normal operation of the pump.

Abstract: A liquid metal mechanical pump, having therein a liquid metal free surface and a cover gas space over the liquid metal free surface, is equipped with an emergency gas line shut-off system. This system can shut off a cover gas line by the solidification of liquid metal to thereby prevent the leakage of cover gas and the rise of the liquid metal level in the pump at the time of the failure of the cover gas line. The mechanical pump may further be equipped with an emergency syphon system which can discharge liquid metal when the liquid metal level in the pump exceeds a predetermined level.

Abstract: A hermetic motor compressor including a closed housing which covers motor and compressor means; and a partition wall which separates a lower temperature compartment in which at least part of a motor is held and a recycling coolant is fed through an inlet port formed on said housing; and a higher temperature compartment in which a compressor and a coolant muffler and a loop part of an outlet pipe are held.

Abstract: A hermetic motor compressor having a motor compressor unit including an upper motor section and a lower compressor section connected with each other and a closed housing accommodating therein the motor compressor unit. The compressor section includes a frame body forming a cylinder, a cylinder head provided with a discharge valve and a suction valve and a head cover in which only a discharge chamber is formed. A suction chamber of a small volume is formed in the frame body at a portion around the cylinder and is communicated with the upper part of a space in the closed housing through an upright suction pipe made of a synthetic resin.

Abstract: In a space shuttle, payloads are individually temperature controlled by means of a liquid control loop in heat exchange relationship with both the payload and a radiator or shuttle cold plate. The liquid pump is driven at a variable speed to control the heat transferred between the load and the radiator or cold plate, and the motor may be reversed to by-pass the radiator through check valves. The radiator includes heat pipes seated in elongated, high thermal conductivity extrusions and retained therein by elongated springs. The motor is a brushless DC motor isolated from the pump by a magnetic clutch and thermal isolator. The motor is driven by a digital circuit which provides a single pulse to each set of windings during each energizing time frame. The width of that pulse is modulated to provide for speed control. Pulse width modulation is by means of a one-shot, the pulse duration of which is controlled by a speed control signal.

Abstract: A hermetic motor-compressor for a refrigerating system. The hermetic motor-compressor has a motor component and a compressor component drivingly coupled to each other and disposed within a closed container. The refrigerant gas introduced from an evaporator of a refrigerating system through a return pipe is once released into the space within the closed container and then sucked by the compressor component so as to be compressed and discharged to the outside. A barrier is provided on the outer periphery of the motor and compressor components for preventing a main flow of the refrigerant gas introduced into the closed container through the return pipe from flowing into the circumference of high-temperature portions of the hermetic motor-compressor.

Abstract: This disclosure relates to an electric motor of a motor-pump assembly, the motor including an improved end bell. The end bell is located between the motor and the pump of the assembly and forms a common wall between them. The end bell is made of a material having a relatively high coefficient of thermal conductivity, and a cover made of a material having a relatively low coefficient of thermal conductivity separates the pumped liquid from the end bell. A bearing is supported by the end bell, and condensation around the bearing is prevented by the cover and by means for circulating relatively warm air around the bearing.

Abstract: A spool-shaped metallic heat barrier is inserted between the motor housing and the pump housing of a motor-pump assembly which conveys fluids at elevated temperatures. The flanges of the heat barrier abut against and are connected to the respective housings by means of bolts, and are rigidly secured to each other by several annuli of discrete heat dissipating ribs which are adjacent to the peripheries of the flanges. That flange which is adjacent to the motor housing can be formed with a peripheral groove the radially outermost portion of which receives a ring-shaped closure so that the inner portion of the groove forms an annular channel for reception of a stagnant or circulating liquid coolant.

Abstract: An axial flow, reversible fan for use as a plug unit in a heat treating furnace comprises a shaft, an impeller having opposing faces mounted on an end of the shaft and comprising a tankhead and a plurality of flat blades disposed about and extending radially therefrom, a first set of fixed concavo-convex vanes disposed about and extending radially from the shaft adjacent a face of the impeller, a second set of fixed concavo-convex vanes disposed about and extending radially from the shaft adjacent the opposite face of the impeller, and a driving means for rotating the impeller which is attached to the shaft.

Abstract: A heat shield, for example, for a pump for liquid sodium, formed so that the space between the shield and a wall can be optimally sealed during operation. The heat shield thus retains more radiant heat and prevents a disturbance of a rotation-symmetrical thermal condition. To achieve the object, the heat shield, in one form, consists of two layers of materials having different coefficients of expansion, and in an alternative form, of two parts the spacing between which can be adjusted by mechanical means in a pivoting manner.

Abstract: An improved turbocharger including a turbine connected to an air compressor via a common shaft which is supported by a bearing. The bearing housing has an end portion adjacent the turbine which includes an end surface. A shroud heat shields the one end portion of the bearing housing from the heat generated by the turbine. The device further includes a spacer interposed the shroud and the bearing housing end surface consisting of two plates angularly connected to one another. The spacer forms a chamber between the two plates. A support member retains the spacer into engagement with the end surface of the bearing housing and the shroud.

Abstract: A turbocompressor which comprises a compressor housing receiving therein the rotor of the compressor, a gas intake housing adapted to direct a hot gas to the rotor of the turbine. The rotor of the turbine is mounted on the same shaft with the rotor of the compressor. The turbocompressor further comprises a housing cooled by a fluid, for example water, for escape of exhaust gases from the turbine, comprising a load-carrying framework formed by two spaced flanges and rigid longitudinal thin-walled shaped steel elements spaced from one another and interconnecting the flanges. The spaces between the elements are filled with thin steel panels defining jointly with the shaped elements the external wall of the housing. The internal wall of the cooled housing is made in the form of a plain thin-walled trough-shaped steel sheet secured to the flanges and arranged so that a space for circulation of the cooling fluid is afforded between the external and internal walls of the housing.

Abstract: A heat pump unit comprising a compressor and an expansion machine for respectively compressing and re-expanding a medium which circulates in a heating or cooling circuit. The power used for compressing this medium is at least partly recovered in the expansion machine and is used for driving the compressor. The compressor and the expansion machine are inner axle, intermeshing rotary piston engines which are arranged directly adjacent to one another on a common shaft. The inner side walls of the rotary engines are adjacent to each other and have cavities and thermal insulating means interposed between them and, while being interconnected, are fixedly connected on the one hand to the shaft and on the other hand with outer rotors. The shaft is rotatably journalled in eccentrics of inner rotors, which eccentrics are rigidly connected with a stationary housing.

Abstract: Efficient downhole cooling of the electric pump motor, motor protector, and thrust bearing of a submergible pump assembly in a high temperature environment is accomplished without significant modification of the pump assembly itself. Coolant flows through an insulated shroud as a high velocity annular fluid sheet surrounding the components to be cooled. In a closed loop system, coolant from a heat exchanger is supplied to the shroud via insulated supply tubing, which contains a cable for energizing the motor, is injected into the shroud by a coolant discharge head from which the pump assembly is suspended, and returns to the heat exchanger via insulated return tubing. The walls of the shroud and tubing include expansion element which accommodate the difference between interior and exterior temperatures.

Abstract: A quiet and powerful vacuum cleaner-blower assembly comprises an improved quiet operating electric motor coupled to and driving an improved quiet operating blower. The motor has improved cooling air flow with cooling air inlet and discharge openings disposed to minimize noise. An axial flow cooling air fan impinges the cooling air onto sound absorbing material before discharging the cooling air from the motor. The blower has a high efficiency impeller utilizing forward and backward curved vanes which discharge air into a casing having a chamber with a cross-sectional flow area which linearly increases as air moves around the periphery, resulting in quiet operation and increased capacity with a less than expected increase in power consumption. The vacuum cleaner-blower assembly may be operated in conjunction with stationary guide blades for improving the flow of air into the impeller, resulting in still further increase in capacity without substantial increase in noise or power consumption.

Abstract: A wet pick-up type vacuum motor fan unit with a separately ventilated motor section and a motor end bracket serving also as a support for, and part of a discharge end housing wall for, the working air fan section, has on the bracket fanward face a centrally apertured metal disk plate defining a flow space or path for bearing sealing air flow from ambient air inlets external of the motor section to a central discharge into the inlet eye of an auxiliary fan clamped on the shaft back-to-back with a larger diameter working air centrifugal fan adjacent the end bracket.

Abstract: A pump assembly for circulation of liquid coolant in boiling water reactors has a thin-walled spherical pump body for an impeller which rotates about a vertical axis and an electric motor which drives the impeller and has an upright housing with a heat barrier at its upper end. The heat barrier has a thin-walled neck portion which surrounds the impeller shaft below an opening in the lower part of the pump body and a ring-shaped surface which is biased against a complementary surface of the pump body around the opening by several heat-expansible bolts which separably couple the housing to the pump body. The heat barrier has an annular air space surrounding the neck portion and being surrounded by an annulus of cooling ribs, an upper flange which abuts against the pump body and has one or more compartments for a circulating coolant, and a lower flange with one or more compartments for a circulating coolant.

Abstract: A wet pick-up type vacuum motor fan unit with a separately ventilated motor section and a motor end bracket serving also as a support for, and part of a discharge end housing wall for, the working air fan section, has on the bracket fanward face a centrally apertured metal disk plate defining a flow space or path for bearing sealing air flow from ambient air inlets external of the motor section to a central discharge into the inlet eye of an auxiliary fan clamped on the shaft back-to-back with a larger diameter working air centrifugal fan adjacent the end bracket.