Abstract: A horizontal type vibrating compressor having a cylindrical container for accommodating a compressor proper which is disposed horizontally, and closure members for closing both open ends of the cylindrical container; and having such a construction that a piston fixed to a driving coil is caused to vibrate in substantially horizontal direction in a cylinder, wherein coil springs are respectively interposed in the compressed state between each closure member and the compressor proper; cushioning members are fixed via cup-shaped holders to any one side of the compressor proper or the closure members; pin-shaped supporting members, which are adapted to be axially slidable by engaging with the cylindrical portion of the cushioning members are fixed to the other side of the compressor proper or the closure members; and an air/oil intake tube connecting the outside and inside of the compressor proper is provided, the outer end thereof being connected to a fiber braided tube disposed on the lower inside part of the c

Abstract: A compressor oil pump with integral contaminant collector and helical vane for improved pumping efficiency. A generally cone-shaped pick-up tube is adapted to be attached to the lower end of a hollow rotatably driven vertical shaft for rotation thereby about its longitudinal axis. The lower end of the pick-up tube includes an inlet opening which extends into a reservoir of oil. An annular contaminant collection groove is disposed circumferentially within the wall of the pick-up tube forming a pocket. This groove collects and retains contaminant particles contained in oil which is swept up the tapered interior surface of the tube due to the centrifugal force developed by its rotation. The helical vane is provided in the interior of the pick-up tube to increase its pumping efficiency. The vane acts to accelerate the oil to the rotational speed of the pump, thereby improving the volumetric flow output from the pump.

Abstract: A motor-compressor unit comprising a compressor including a rotatable crankshaft, a motor, a shell enclosing the compressor and the motor, a supply of lubricant, and a lubrication system for circulating lubricant through the compressor. The lubrication system includes a first stage axial passage, a second stage axial passage extending upward from an upper portion of the first stage axial passage, a first stage radial passage extending outward from the first stage axial passage, and a second stage radial passage extending outward from the second stage axial passage. The lubrication system further comprises an interstage collection chamber for receiving lubricant directed through the first stage radial passage, and an interstage conduit for conducting lubricant from the interstage collection chamber into the second stage axial passage.

Abstract: A method is disclosed of counteracting the tendency for oil to enter a compressor motor air gap. The method includes the provision of means that interrupt the normally smooth surface of a rotor to which oil would otherwise adhere. Either alternatively or additionally, a sweeping action is carried out for moving oil to stator slots adjacent to the motor air gap and thus out of the air gap. Departure from conventional rotor construction includes providing one or more grooves along the surface of the rotor. Grooves may be cut into rotor surfaces by a file or ball end mill. In other forms, grooves or dents may be coined or otherwise pressed into the rotor; or such grooves may be provided as a result of the configuration of the individual rotor laminations. The grooves may be disposed parallel to the rotor axis or disposed spiralled (clockwise and counterclockwise); and either one or a plurality of grooves may be provided.

Abstract: A lubricating device, especially for use with a hermetic motor compressor unit, having a vertical shaft extending downwardly into a lubricant sump. The lubricating device comprises a pick-up tube having a larger diameter upper cylindrical portion open at the upper end thereof and adapted for being fitted into a central bore in the shaft, a smaller diameter lower cylindrical portion adapted to be immersed in fluid in the sump, a tapering transition region connecting the upper and lower cylindrical portions, an inlet port extending axially into the lower end of the lower portion, and the pair of diametrally opposite ribs on the lower cylindrical portion comprising ridges on the inner surface and corresponding hollows on the outer surface thereof.

Abstract: A scroll compressor for compressing a gas to a high pressure or for use in a refrigeration system such as a refrigerator, freezer, air conditioner or the like, is provided. In the compressor, a compressor unit and its driving motor is enclosed gas-tightly in a casing, and the compressor unit is provided with a backpressure chamber into which is introduced a partially compressed gas so as to press an orbiting scroll member against a stationary scroll member. The compressed gas discharged from the compressor unit is circulated through component parts such as the motor enclosed in the casing before it flows into a next stage outside of the compressor. With the above arrangement, the separation of the orbiting scroll member from the stationary scroll member due to the gas pressure is prevented to thereby attaining a secure axial seal between them, and also the motor is satisfactorily cooled.

Abstract: A hermetic refrigeration compressor has a two-stage oil pump in the vertically aligned crankshaft that is journaled in a combination thrust and radial bearing at the bottom of the crankshaft. The oil passes upward through an axial passage in the crankshaft and then outward through a radial passage which comprises the first stage of the pump. The oil then passes through a wide and shallow groove around most of the periphery of the crankshaft and is then returned through a second radial passage to another vertical passage offset from the axis of the crankshaft to move the oil upward to lubricate the various moving parts of the compressor.

Abstract: An improved rotary vane machine assembly of the type utilized for producing vacuum in motor vehicle power brake assistance units wherein a compensating coupling connects the pump drive shaft with the drive motor of the pump and a lubricant is supplied to the working elements of the pump from said drive motor, the improvement comprising a pot-shaped hood which receives the working components of the pump and, in particular, the rotor and vanes, and a mounting flange having a bell-shaped foot portion surrounding the compensating coupling and a lid portion covering the open end of the pot-shaped hood. A compensating disc which limits the operating chamber of the working components in an axial direction is also disclosed, the compensating disc being pressed against the face of the vanes by means of a cushion of lubricant and/or a compression spring.

Abstract: A small power hermetic motor-compressor suitable for use in an electric refrigerator having a compression mechanism section and a driving electric motor section combined together and confined in a closed container. The compression mechanism section and the driving electric motor section are connected to each other by means of a rotor shaft manufactured through a plastic working of a single steel pipe blank. The rotor shaft has a journal section adapted to be slidingly held by a cooperative bearing section provided on the stationary part of the compressor. A plurality of oil grooves of a relatively small length are press-formed on the outer peripheral surface of the rotor shaft from the outside thereof. At least one of the oil grooves is provided with an oil passage bore formed through the thickness of the rotor shaft, so that the lubricating oil sucked up along the inner peripheral wall of the rotor shaft is allowed to come out of the rotor shaft and get into the oil groove.

Abstract: A lubricating device for use in hermetic compressors and the like wherein a rotating oil pick-up tube is partially immersed in the oil in the compressor sump, and pumps the oil upwardly by means of centrifugal action to the compressor parts which are to be lubricated. The compressor includes a vertical shaft to which the pick-up tube is connected, wherein the shaft has an open hollow lower end including a pair of locking openings in the inner surface of the hollow portion. A molded plastic oil pick-up tube, which is bifurcated at one end so as to form a pair of resilient locking arms, is inserted into the shaft until a pair of locking nibs snap into the corresponding locking openings. In order to properly orient the pick-up tube about its axis so that the locking nibs are aligned with the corresponding openings, a pair of protruding locking ears on the tube are axially aligned with a pair of corresponding slots in the lower edge of the shaft.

Abstract: A device is described for cooling and silencing a compressor or vacuum pump which is directly connected to an electric driving motor. Both the compressor and the driving motor can be immersed, and are arranged in a totally sealed container encasing a cooling and sound-absorbing liquid to such a level that the compressor or vacuum pump and driving motor are totally immersed in the liquid. The whole of the outer surface of the container is coated with sound-absorbing material, and at least one heat exchanger is arranged outside the container and the sound-absorbing material, the heat exchanger being in communication with the inside of the container so that the cooling and sound-absorbing liquid flows through the heat exchanger under the influence of the thermal circulation generated in the liquid.

Abstract: The invention relates to a refrigerator type motor-compressor assembly. The housing includes inner and outer tubular shaped casings with the inner casing in which the motor and compressor units are mounted being resiliently mounted relative to the outer casing. The cylinder block is rotatable with the motor shaft with the cylinder thereof extending transversely relative to the shaft. A piston in the cylinder is actuated by a pin carried by an annularly shaped member which is rotatable about a stationary, cylindrically shaped track member. The track member is eccentrically disposed relative to the axis of the motor shaft. An antechamber is provided on an end wall of the inner casing to form an isolated chamber between the inner and outer casings. The antechamber is utilized to provide for the exhausting of pressurized gas from the rotatable cylinder block.

Abstract: An oil housing adapted for use between a motor and a pumping unit in a submersible pump is of generally cylindrical shape. A central chamber is adapted to receive a drive shaft and is divided into a bearing chamber and a seal chamber. An outer circumferential chamber is divided in a plurality of rooms. Some of the rooms are connected with the bearing chamber, other rooms are connected with the seal chamber, and the remaining rooms serve as air shafts for providing air flow between the motor and pumping unit. With this arrangement, different lubricating and cooling media may be employed for the motor bearings and seals.

Abstract: In a vertical hermetic compressor, an inner cylindrical housing coaxially mounted within a sealed outer enclosure, sealably carries at its lower end, paired helical screw rotors defining with the inner housing a screw compressor compression chamber and supports coaxially with one of the screw rotors and constituting an axial extension thereof the compressor electrical drive motor by longitudinally spaced tapered roller bearings. Oil is bled from the sump and fed to the suction inlet tube to the compressor upstream of the working gas filter. Compressed working fluid is discharged axially downwardly with the lower tapered roller bearing assembly providing a minimal high pressure gap between the screw rotor ends and the stationary end plates. Entrained oil from the discharge passage which extends through the electric motor rotor seeks the suction side of the compressor through the upper of the two tapered roller bearing pack assemblies for controlled continuous lubrication of the upper bearing assembly.

Abstract: There is disclosed herein a lubrication system for a compressor which includes means for directing lubricant supplied to an upper bearing across the working surfaces thereof and returning this lubricant directly to the oil sump of the compressor thereby preventing lubricant from entering the compressor means which may result in slugging thereof. This oil return means includes an upper bearing which is provided with grooves on the working surface thereof which direct excess oil supplied to the bearing back to the oil sump while allowing a lubricating film of oil to remain between the adjacent bearing and crankshaft surfaces.

Abstract: A pump bracket includes a two-part bracket housing with a heat exchanger mounted therein through which air can flow, the bracket being attached to, and between a motor and a pump. The shafts of the motor and pump are coupled together and a fan blower wheel is mounted on the motor shaft. A blower casing controls air flow to the suction side of the blower wheel. In one embodiment the casing channels incoming air from a portion of the exchanger to the suction side of the wheel which blows air out through the rest of the exchanger. In another embodiment air is drawn in through openings in the housing, directed to the suction side by the casing and blown out through the exchanger.

Abstract: There is disclosed herein a lubrication system for a compressor which provides means for separating and flushing foreign particles contained in the lubricant so as to minimize the number of such particles being circulated through the lubrication system thereby reducing the possibility of damaging the bearings. The foreign particles are separated from the main lubricant flowpath by centrifugal forces and are flushed downwardly into collection means in the lower bearing housing and out through a passage provided therein back to the oil sump. An extension of this passage in the lower bearing housing is also adapted to cooperate with a portion of an axial thrust bearing to prevent rotation thereof.

Abstract: An automotive fuel pump having a return channel from the pressure side to the suction side thereof, comprising an opening in the housing independent of the outlet channel and opening to the inlet channel. The return channel is located in the area of the pressure side armature bearing. This construction enables elimination of gas bubble formation when the fuel being pumped is warmed.

Abstract: A high vacuum turbomolecular pump is described having a lubrication system which assures steady, continuous lubrication of the rotor bearings. The pump includes an outer casing having an upper open end adapted to be communicated hermetically with an isolated environment to be pumped, and an exhaust opening at its lower end. A plurality of vertically spaced stator blade wheels are positioned within the casing intermediate the inlet and exhaust openings, and a rotor is mounted within the casing on a spindle for rotation therewith on a generally vertical axis. The rotor is provided with a plurality of axially spaced rotor blade wheels interleaved with the stator blade wheels. An electrical induction motor is incorporated within the pump for rotating the spindle and, hence, the pump rotor, for high vacuum pumping.

Abstract: A hermetic refrigerant compressor includes an electric motor mounted within a sealed housing with a crankshaft extending vertically from the motor to connect with a plurality of radially disposed compressor pistons. The lower end portion of the crankshaft extends into a sump of lubricant collected in the lower end of the housing and first and second stage pumping means are formed in the lower end of the housing to pump lubricant to upper and lower bearings which support the crankshaft within the housing. A vent communicates with the inlet to the first stage pumping means for venting flashed refrigerant gases from the system before the lubricant enters the first stage pumping means. In addition, a filter may be provided for continuously cleaning some of the lubricant discharged from the first stage pumping means without interfering with the flow of lubricant from the first stage pumping means to the second stage pumping means.

Abstract: A refrigeration motor-compressor assembly resiliently mounted within a hermetically sealed shell having a sump area containing lubricating oil continuously aerated by a stirrer fixed to a rotating shaft of the motor-compressor assembly is disclosed. The stirrer is formed of thin perforated sheet metal or screen mesh shaped into an open-ended truncated cone, the apex portion of which is fixed to the rotating shaft of the motor-compressor assembly while the base portion of the cone is submersed in the lubricating oil contained in the sump area. Aeration of the lubricating oil by the rotating stirrer attenuates the transmission of mechanical noise generated within the hermetically sealed shell.

Abstract: A hermetic refrigerant compressor includes an electric motor mounted within a sealed housing with a crankshaft extending vertically from the motor to connect with a plurality of compressor pistons. The lower end portion of the crankshaft extends into a sump of lubricant in the housing and a pump is formed in the lower end of the crankshaft to pump lubricant through a discharge conduit to an annular chamber located within an upper bearing support for the crankshaft. The discharge conduit is offset from the central axis of the crankshaft and a diametrical cross-bore including first and second radial segments communicates with the annular chamber, the cross-bore intersecting the upper end of the discharge conduit. From the discharge conduit, one segment of the cross-bore is longer than the other so that lubricant is slung radially outward through the shorter length segment into the annular chamber.

Abstract: A lubricating device, especially for use with a hermetic motor compressor unit, having a vertical shaft extending downwardly into a lubricant sump, and in the lower end of which shaft is a device having an inlet in the lower end and operable as the shaft rotates for propelling the lubricant upwardly along a hollow passage in the shaft and into a channel formed in the outside of the shaft and disposed within the axial limits of the bearing which supports the shaft.

Abstract: A turbomolecular vacuum pump has a housing, a vertically oriented hollow pump rotor situated in the housing, and a vertically upwardly oriented stub shaft affixed to the housing and extending into the hollow pump rotor. The pump rotor is supported on the stub shaft by a magnetic axial bearing and at least one magnetic radial bearing, all disposed in the space surrounded by the hollow pump rotor.

Abstract: A compressor for a refrigerant gas wherein a rotor acts on a rocking plate to effect rocking thereof and reciprocation of pistons in cylinder bores to produce suction and exhaust strokes for refrigerant gas. A lubricant is contained in a sump in the compressor casing and it is atomized and mixed with refrigerant gas which leaks past the pistons. A duct is formed in the casing for conveying the mixture of refrigerant gas and lubricant from the casing under the action of the suction stroke of the pistons. The mixture is delivered at the inlet for refrigerant gas and the total mixture now flows to a separator where the lubricant is separated from the refrigerant gas. The refrigerant gas is then supplied into the cylinder bores during the suction stroke and the lubricant is delivered into a reservoir where it is forceably delivered back into the casing to the sump.

Abstract: A pressure oil or hydraulic fluid pump is provided wherein a container holding a supply of the liquid to be pumped also contains the fluid pump assembly and houses an electric motor driving the pump assembly. The container is filled or partially filled with the liquid and has the stator of the electric motor supported in it so that the liquid flows directly around and through the motor while the pump is operating.

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 glandless pump and wet motor unit for circulating water in a boiler has an axially movable shaft which is rotatable in a liquid-filled housing of the motor and carries a disk disposed between electromagnets which are energizable to produce an electromagnetic field serving to maintain the shaft through magnetic bearings in a selected axial position when the electromagnets are energized. At least one mechanical auxiliary thrust bearing is provided in the housing and becomes effective in response to deenergization of the electromagnets. The auxiliary bearing may be a Kingsbury bearing which is spaced apart from the electromagnetic thrust bearing, or the auxiliary bearing may include the disk which cooperates with adjacent surfaces of the electromagnets or with adjacent surfaces of the housing when the shaft is subjected to axial stresses while the electromagnets are deenergized.

Abstract: A fuel pump, comprises an electric motor mounted in a tubular housing which is formed with a tapered portion at the take-in side, and an impeller which is mounted adjacent the tapered portion of the housing on the armature shaft of the motor for rotation therewith. A disc-shaped wall concentrical of the armature shaft separates the impeller from the motor space and is formed, at its circumference, with a channel-shaped annular duct open toward the periphery of the impeller. The radially extending impeller blades are thereby enclosed between the tapered portion of the housing and the disc-shaped wall, and the fuel is guided radially into the annular duct.

Abstract: 13.

Abstract: In a vertical hermetic compressor, an inner cylindrical housing coaxially mounted within a sealed outer enclosure, sealably carries at its lower end, paired helical screw rotors defining with the inner housing a screw compressor compression chamber and supports coaxially with one of the screw rotors and constituting an axial extension thereof the compressor electrical drive motor by longitudinally spaced tapered roller bearings. Oil is bled from the sump and fed to the suction inlet tube to the compressor upstream of the working gas filter. Compressed working fluid is discharged axially downwardly with the lower tapered roller bearing assembly providing a minimal high pressure gap between the screw rotor ends and the stationary end plates. Entrained oil from the discharge passage which extends through the electric motor rotor seeks the suction side of the compressor through the upper of the two tapered roller bearing pack assemblies for controlled continuous lubrication of the upper bearing assembly.