Abstract: A near ceiling mounted NBC filtration system of collective protection shelters comprising a filter unit, a blower, and an air exchange backup unit [20] (FIG. 5). The air exchange backup unit [20] comprising: a plurality of hinged segments [22a, b, c] serially linked to each other to form a foldable arm. The hinged segments [22a, b, c] are configured for transmission of rotational motion between each other. At least one of the hinged segments comprises at least one stage of a first speed increasing transmission. A first end [24] of the air exchange backup unit is swiveably attached to an electric motor [42] driving a blower [40]. And a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates a shaft of the electric motor [42] at substantially a rated speed of the electric motor.

Abstract: A compressor includes a tubular shape casing, a compression mechanism adjacent one end of the casing in the casing, a motor arranged adjacent another end of the casing in the casing, a suction pipe opening between the compression mechanism and the motor, a gas flow path formed between the motor and an inner peripheral surface of the casing, and a gas guide facing an open end of the suction pipe. The gas flow path allows internal regions of the casing adjacent axial ends of the motor to communicate with each other. The gas guide includes a first flow path configured to guide a portion of a gas that has passed through the suction pipe toward the compression mechanism, and a second flow path configured to guide a remaining portion of the gas that has passed through the suction pipe toward the gas flow path.

Abstract: A system includes a compressor housing having an intake portion and a discharge portion and a rotor disposed in the compressor housing and configured to compress a fluid flowing from the intake portion toward the discharge portion. The rotor includes a body portion and an internal passageway formed within the body portion extending along an axial length of the rotor. The internal passageway is configured to direct a lubricant between the intake portion and the discharge portion of the compressor housing.

Abstract: A planetary gear mechanism includes: a case; a first shaft having a connecting shaft; a second shaft having a receiving hole to rotatably receive the connecting shaft; a sun gear joined to the first shaft; a planetary carrier joined to the second shaft; planetary gears rotatably supported by the planetary carrier; and a ring gear provided on an inner surface of the case. The connecting shaft or the receiving hole is formed with a helical groove extending vertically and connected to a gap formed between an upper surface of the sun gear and a lower end surface of the second shaft. The second shaft is formed with a first lubricating oil passage connecting the helical groove to sliding contact parts of the second shaft and the case. When the first shaft is rotating, at least a part of each planetary gear is immersed in lubricating oil stored in the case.

Abstract: A seal support sensor includes a housing, an extension, a sensor and an electronic controller. The housing is configured to attach to a barrier fluid tank. The extension 64 has a distal end and a proximal end, the proximal end being connected to the housing. The sensor is disposed at the distal end, configured to be disposed within the barrier fluid tank and configured to detect a parameter within the barrier fluid tank. The electronic controller is configured to determine whether the parameter within the barrier fluid tank is within a predetermined range perform a mitigation operation when the parameter is not within the predetermined range.

Abstract: A centrifugal compressor and a refrigerating device. The centrifugal compressor includes: a shell, which has a fluid inlet and a fluid outlet; a motor assembly including a stator and a rotor, the rotor including a vertically arranged rotor shaft; a centrifugal compression mechanism, an impeller of which is connected with the rotor shaft so as to be driven by the motor assembly, wherein the centrifugal compression mechanism is arranged downstream of the fluid inlet to receive fluid, compress and pressurize the fluid, and output the pressurized fluid in a direction away from the motor assembly; and a guide member, which receives the pressurized fluid from the centrifugal compression mechanism, and which defines a flow passage alone or together with a part of the shell, wherein the flow passage is configured such that the pressurized fluid from the centrifugal compression mechanism passes through and cools the motor assembly.

Abstract: The invention relates to a screw compressor for compressing a medium, having a drive unit which has a drive, and having a compressor unit which has two mutually engaging rotors with screw profiles, which are complementary to one another, and a compressor housing having an inlet and an outlet. The rotors are coupled to the drive unit via a shaft in each case. The shafts are only mounted on the drive side of the rotors. The rotors are mounted only on one side relative to their axial direction and are not mounted on the side which faces axially away from the drive. The invention furthermore relates to a screw compressor arrangement with screw compressors which are fluidically connected in series.

Abstract: Disclosed is a low-temperature refrigeration device comprising a working circuit that forms a loop and contains a working fluid the working circuit forming a cycle which includes, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, the device further comprising a refrigeration heat exchanger for extracting heat from at least one member by exchanging heat with the working fluid flowing in the working circuit, the compression mechanism comprising two separate compressors, the mechanism for cooling the working fluid comprising two cooling heat exchangers which are arranged respectively at the outlet of the two compressors and ensure heat exchange between the working fluid and a cooling fluid, each cooling heat exchanger comprising a cooling fluid inlet and a cooling fluid outlet, characterized in that the cooling fluid outlet of one of the two cooling heat exchangers is connected to the cooling fluid inlet of the other cooling heat exchanger.

Abstract: An electronic dispenser comprising a housing; a feed roller rotatably mounted within the housing; a motor operable to drive rotation of the feed roller, and wherein the motor is at least partially within the feed roller; and wherein actuation of the motor results in a noise level, external to the housing, of less than 53 A-weighted decibels.

Abstract: A motor assembly for a laundry treating appliance, the motor assembly including an impeller housing, a compressor housing disposed within the impeller housing, a compressor motor disposed within the compressor housing, an impeller mechanically coupled to the compressor motor and disposed within the impeller housing, and a cover for the impeller housing.

Abstract: A spiral orbiting wrap of an orbiting scroll is meshed with a spiral fixed wrap of a fixed scroll. A first compression chamber is formed by an inner wall surface of the orbiting wrap and an outer wall surface of a fixed wrap. A second compression chamber is formed by an inner wall surface of the fixed wrap and an outer wall surface of the orbiting wrap. The orbiting base plate of the orbiting scroll includes a first through hole capable of communicating the first compression chamber with the back pressure chamber and a second through hole capable of communicating the second compression chamber with the back pressure chamber. The first compression chamber communicates with the back pressure chamber via the first through hole prior to the communication of the second compression chamber with the back pressure chamber via the second through hole.

Abstract: A damped compressor used in mobile appliances. The appliances may comprise a compressor which is disposed within a housing and is in fluid communication with a refrigerant system. Within the housing there is an improved damping or stabilizer system which limits movement of electric or mechanical portions, or both, of the compressor within the housing. At startup and shutdown, when oscillations of the components within the housing are generally maximized, the components are limited from contacting the housing internal structure so as to inhibit damage to the compressor and reduce the noise associated with such contact. The components are also damped from movement associated with the mobile application of the compressor.

Abstract: A generator cooling structure of an engine including a crankshaft and a generator arranged on one end side of the crankshaft includes a crankcase that houses the crankshaft and a generator cover that is coupled to the crankcase in order to house the generator. The generator has a rotor fixed to the crankshaft and a stator fixed in position with respect to the generator cover. A cooling medium supply passage, which is arranged in the direction of the one end side of the crankshaft in the stator in order to supply the cooling medium to the stator, is provided.

Abstract: The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).

Abstract: A vacuuming device comprises a main body, a rotary shaft, a vacuum pump rotor, a motor stator and a motor rotor. An air inlet, an air outlet, an oil storage chamber and a motor chamber are disposed in the main body. The oil storage chamber communicates with the air outlet. The rotary shaft is rotationally connected to the main body. The vacuum pump rotor is fixedly mounted to the rotary shaft and cooperatively forms a stator cavity of the vacuum pump with the inner-wall of the main body. The air inlet and the oil storage chamber communicate with the stator cavity of the vacuum pump respectively. The vacuuming device reduces the cost of manufacturing, optimizes the spatial structure and downsizes the device.

Abstract: A compressor includes a motor unit that includes a rotor and a stator, a compressor unit that compresses a refrigerant by rotation of the rotor, and a container that forms an internal space in which the motor unit and the compressor unit are housed, wherein in the rotor, a rotor gas passage through which the refrigerant flows from an under-motor space of the internal space arranged on a side of the motor unit that is close to the compressor unit to an above-motor space of the internal space arranged on a side of the motor unit that is distant from the compressor unit is formed, in the stator, a stator gas passage through which the refrigerant flows from the under-motor space to the above-motor space is formed, and a cross-sectional area of the stator gas passage is 6.0 times or less a cross-sectional area of the rotor gas passage.

Abstract: A blower, comprising: a blower body, having accommodated therein a fan and a drive unit, a rotation shaft of the fan defining a longitudinal axis, and the blower body defining an air inlet; a blow pipe, attached to the blower body and extending along the longitudinal axis, the blow pipe defining an air outlet; and a control unit, for controlling operation of the drive unit. The blower defines an airflow path extending from the air inlet to the air outlet, the control unit being at least partially located in the airflow path, such that when the blower is operating, at least a portion of an airflow entering the air inlet cools the control unit and is then discharged through the air outlet.

Abstract: A fluid-injected compressor installation (1) comprises a screw compressor (2) with a compression housing (4) in which a pair of compressor rotors (6a, 6b) are mounted. A drive motor (3) drives the compressor rotors. An inlet (7) and an outlet (8) on the screw compressor (2) supply a gas and discharge compressed gas. A gear transmission (20) between the shaft (16) of one of the compressor rotors and the motor shaft (11), includes a driven gear (18) and a driving gear (19); a motor bearing (21) on the motor shaft (11) next to the driving gear (19); and a dynamic seal (25) next to the motor bearing (21), on the drive motor (3) side, such that the motor bearing (21) is between the driving gear (19) and the seal (25).

Abstract: A rotor assembly for an electric machine is described herein. The rotor assembly comprises a body member, a first shaft member and a second shaft member. The body member comprises an inner wall defining a cavity in the body member. The body member is arranged between the first shaft member and the second shaft member. The first shaft member comprises a tube arranged through the first shaft member and extending at least partially in the cavity of the body member. An end of the tube exposed in the cavity comprises a medium dispersion unit configured to disperse a medium in the cavity and the medium dispersion unit comprises an impeller element configured to provide a turbulent flow of the medium.

Abstract: A compressor includes a shell assembly, a compression mechanism and a suction fitting. The shell assembly defines a chamber. The compression mechanism is disposed within the chamber of the shell assembly and includes a suction inlet. The suction fitting is attached to the shell assembly and extends at least partially into the chamber of the shell assembly. The suction fitting defines first and second openings. The suction fitting directs working fluid through the first opening towards the compression mechanism and the suction fitting directs working fluid through the second opening away from the compression mechanism.

Abstract: The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).

Abstract: This disclosure describes new horizontal roller-piston/vane type rotary compressors with novel features such as new lubricating oil circuit designs to provide reliable oil lubrication, and increase tiltability during operation. Also new multi-pump configurations of horizontal compressors are introduced in order to significantly increase redundancy, reliability, and turn down ratio. Rotary compressors may be configured with subsets of the disclosed features to configure those compressors for specific applications.

Abstract: A fluid dispensing device includes a housing and a reciprocating piston fluid pump coupled to the housing. The reciprocating piston fluid pump includes a piston disposed within a cylinder. The piston is configured to pressurize at least one pumping chamber. A motor is coupled to the housing and connected to the reciprocating piston fluid pump to actuate the piston. A wobble assembly connects the motor to the piston of the reciprocating piston fluid pump. A spray tip connected to an outlet of the at least one pumping chamber.

Abstract: Disclosed is a compressor including a vibration attenuating member that fixes a driving assembly to be spaced apart from an inner circumferential face of a shell and reduces vibration or noise generated in the driving assembly.

Abstract: Systems and methods for delivering a buffer fluid to a shaft seal of a gas turbine engine are provided. An exemplary system includes, a buffer fluid source, one or more first conduits providing fluid communication between the buffer fluid source and the shaft seal along a first route, and one or more second conduits providing fluid communication between the buffer fluid source and the shaft seal along a second route different from the first route. A heat exchanger is also disposed along the first route to facilitate heat transfer between buffer fluid in the one or more first conduits and a cooling fluid.

Abstract: An electric pump provided with a pump unit configured to discharge working oil by being rotationally driven by an electric motor includes: a drive shaft configured to transmit rotational driving force from the electric motor to a rotor of the pump unit; a rotation-detection shaft provided coaxially with the drive shaft, the rotation-detection shaft being configured to be rotated together with the rotor; and a rotation detector unit configured to detect rotation of the rotation-detection shaft. The rotation-detection shaft has: an engagement portion configured to engage with the rotor; and a detection-target portion facing the rotation detector unit, and an outer diameter of the detection-target portion is set so as to be larger than an outer diameter of the engagement portion.

Abstract: A module for a vacuum pumping and/or abatement system includes a top side, a bottom side, a front side, a rear side, and two opposing lateral sides, which together define a space. The module comprises an apparatus located wholly within the space and one or more connection points coupled to the apparatus. Each of the connection points is for receiving an input for the apparatus or receiving an output from the apparatus. The one or more connection points are located at the top side. The module has a maximum size in a first system dimension that is equal to a first integer multiple of a fixed system value, the first system dimension being a dimension between the lateral sides. For each connection point, a distance between that connection point and each lateral side in the first system dimension is a respective second integer multiple of the fixed system value.

Abstract: A pump housing of an oil pump includes a suction port that supplies oil to a pump room, a discharge port that discharges oil from the pump room, and a seal portion that suppresses leakage of oil from the pump room to outside of the pump room. A shaft of the oil pump includes a small diameter portion and a large diameter portion having different diameters, the small diameter portion is connected to the inner rotor, and the shaft and the inner rotor integrally rotate. The seal portion is in contact with a side surface of the inner rotor extending in a diameter direction of the shaft, and also extends to a region in the diameter direction on an inner side smaller than the large diameter portion in the diameter direction.

Abstract: A module for a vacuum pumping and/or abatement system. The module comprises a frame defining a space, a plurality of facilities inputs configured to receive facilities from a facilities supply, a plurality of facilities outputs configured to output the received facilities out of the module, and a plurality of facilities connection lines located at least partially within the space defined by the frame. The plurality of facilities connection lines connect the facilities inputs to the facilities outputs. The module further comprises a controller configured to control supply of facilities received at the facilities inputs out of the facilities outputs; and control operation of one or more vacuum pumping and/or abatement apparatuses remote from the module.

Abstract: A water lubrication screw type air compressor includes a compressor, an air-loop system and a water-loop system. The water-loop system includes a water supply device, a first water-loop unit and a second water-loop unit. The water supply device includes a first water-treatment device to modify the water quality and provide purified water. The first water-loop unit includes a second water-treatment device to modify water quality and reduce the corrosion of metal components. The second water-loop unit includes a water filter to remove the impurities in water and maintain the purity of cycling water. Therefore, the water-loop system in the present disclosure includes multiple water-treatment devices and filters to maintain the water quality. The purified water ensures better cooling, lubrication and air proofing when injected into the compressor.

Abstract: In a vertical cylindrical hermetically sealed container, a rotary compressor includes a motor unit and a compression unit below the motor unit. The compression unit includes a shaft having an eccentric portion, a piston shaped to fit into the eccentric portion, a flat plate-shaped vane pressed against an outer circumferential surface of the piston, and a cylinder that accommodates the piston and the vane and forms a suction chamber and a compression chamber. The rotary compressor stores, in the hermetically sealed container, lubricating oil of which amount causes immersion of a part of the compression unit. The rotary compressor has a hollow portion on a lower end side of the shaft, and has an oil supply diagonal hole that is inclined with respect to a rotation axis of the shaft and causes the hollow portion and an upper end of the eccentric portion to communicate with each other.

Abstract: A compressor include a casing, a drive unit including a stator and a rotor accommodated in the stator, a rotation shaft coupled to the rotor and configured to be rotated by the rotor, a compression unit that is coupled to the rotation shaft, that is lubricated with the oil, and that is configured to compress and discharge the refrigerant, and an oil-separator that is disposed between the discharge part and the drive unit and that is configured to separate the oil from the refrigerant and guide the refrigerant to the discharge part. The oil-separator includes a centrifugal separator configured to rotate together with the rotation shaft and configured to generate a centrifugal force to separate the oil from the refrigerant, and a coupler coupled to the rotor or the rotation shaft and configured to rotate the centrifugal separator based on rotation of the rotating shaft.

Abstract: In a vertical cylindrical hermetically sealed container, a rotary compressor includes a motor unit and a compression unit below the motor unit. The compression unit includes a shaft having an eccentric portion, a piston shaped to fit into the eccentric portion, a flat plate-shaped vane pressed against an outer circumferential surface of the piston, and a cylinder that accommodates the piston and the vane and forms a suction chamber and a compression chamber. The rotary compressor stores, in the hermetically sealed container, lubricating oil of which amount causes immersion of a part of the compression unit. The rotary compressor has a hollow portion on a lower end side of the shaft, and has an oil supply diagonal hole that is inclined with respect to a rotation axis of the shaft and causes the hollow portion and an upper end of the eccentric portion to communicate with each other.

Abstract: A pump arrangement includes an axial-flow machine and a drive to convey fluid mounted in a housing. The axial-flow machine is formed by at least one first rotor having permanent magnets, a shaft connected to the first rotor and a stator arrangement with stator teeth distributed concentrically around the shaft axis circumferentially and axially separated from the first rotor by an air gap. The stator teeth have axially-opposite end portions and a tooth core therebetween wound with at least one coil winding. The second end portion, turned away from the first rotor, of each stator tooth forms a tooth root joined to a back plate. The first rotor is an eccentric disk and on the side away from the stator arrangement has an eccentric cam, radially spaced from the shaft axis, and rotatably and torque-transmittingly connected to the drive. An axial-flow machine and a compressor includes the pump arrangement.

Abstract: Provided a scroll compressor including: a casing, an internal space in which is sealed; a drive motor that is configured with a stator which is located in the internal space, and a rotator which rotates within the stator, and that has an internal flow passage and an external flow passage that passes through the drive motor itself; a rotation shaft that is connected to the rotator of the drive motor; a compression unit that includes a first scroll which is provided below the drive motor, and a second scroll which is engaged with the first scroll; a discharge pipe that communicates with an upper space of the internal space, which is formed above to the drive motor; and an oil separation member that is provided between the drive motor and the discharge pipe, and from whose upper surface a space is formed to a predetermined depth.

Abstract: A rotation shaft of a scroll compressor that includes an oil flow path formed therein, an upper frame support portion which is inserted into an upper frame, a boss insertion portion which is recessed from an upper surface of the upper frame support portion for insertion of the boss portion, and an oil residual groove which is recessed at a predetermined depth from a bottom portion of the boss insertion portion.

Abstract: Provided is a vacuum pump that prevents the solidification of gas while being operated properly. The vacuum pump includes a rotor that is supported rotatably on a base, a stator that has a thread groove portion, and a heating structure that heats the stator. The heating structure has a spacer that insulates the stator from stator components other than the stator, and a cartridge heater that heats the stator. The distance between a rotor cylindrical portion and the stator at the inlet port side is set to be equal to or greater than the distance between the rotor cylindrical portion and the stator at the outlet port side.

Abstract: A method of operating a multiple-compressor refrigeration system is provided. This method includes the steps of supplying, via a common supply line, refrigerant gas and oil to a plurality of compressors coupled in series, and attaching an oil flow conduit between adjacent compressors of the plurality of compressors. The oil flow conduit is configured to move oil from a compressor with a relatively higher pressure to a compressor with a relatively lower pressure. The method further includes controlling the pressure for each of the plurality of compressors by regulating a speed at which each of the plurality of compressors operates in order to maintain a pressure differential between the adjacent compressors to facilitate the flow of oil from the compressor with the relatively higher pressure to the compressor with the relatively lower pressure.

Abstract: A compressor includes a shaft, a motor portion, and a compressor portion. The motor portion rotates the shaft. The compressor portion compresses refrigerant by rotation of the shaft. The motor portion has an upper insulator, a stator core, and a winding wire. The upper insulator has a plurality of insulator tooth portions. The stator core has a plurality of stator core tooth portions corresponding to the plurality of insulator tooth portions of the upper insulator. The plurality of stator core tooth portions of the stator core are respectively covered with a plurality of teeth of the upper insulator and are respectively wound around thereof by the winding wire. The insulator tooth portion of the upper insulator has a groove through which lubricant oil poured into the compressor portion passes on a stator core contacting surface which is in contact with the stator core tooth portion of the stator core.

Abstract: A connector (24) and method of connecting a compressor assembly (10) that increases the pressure of a fluid are described. The compressor assembly (10) includes cylinders (12a,b), crank shaft housings (18a,b), and a motor housing (22). The connector (24) is disposed between the cylinders (12a,b) and the crank shaft housing (18a,b) and configured to engage the cylinders (12a,b) such that vibration during operation of the compressor assembly is reduced through the placement of the connector (24) corresponding to a center of gravity of the compressor assembly (10). The connector may also be used by the compressor assembly as a heat sink, inlet, mount, filter, and/or to provide other functions that improve the operation of compressor assembly.

Abstract: Provided is a vacuum pump for preventing solidification of gas in a thread groove portion, and a heat insulating spacer used in the vacuum pump. The vacuum pump includes a heat insulating spacer that is interposed between a casing and an outer circumferential stator having a thread groove portion, supports the outer circumferential stator coaxially with a rotor in a rotor radial direction, with keeping a gap between the casing and the outer circumferential stator, and has lower thermal conductivity than the casing and the outer circumferential stator.

Abstract: Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted. The motor shaft drives at least one of the aforementioned two compressor rotors, where the compression housing and the motor housing are connected directly together to form a compressor housing, where the motor chamber and the compression chamber are not sealed off from one another and where the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane.

Abstract: A sealed compressor comprises a sealed container (101) which accommodates an electric component (105) and a compression component (106); wherein the compression component (106) includes a shaft (110) including a main shaft section (111) and an eccentric shaft section (112), a cylinder block (114), a piston (126), and a main bearing unit (120) mounted to the cylinder block (114) and supporting the main shaft section (112) such that the main shaft section (112) is rotatable, a thrust ball bearing (132) mounted to a thrust surface (130) of the main bearing unit (120); and the thrust ball bearing (132) includes a plurality of balls (134) held in a cage (133), an upper race (135) having main surfaces one of which is in contact with upper portions of the balls (134); and a lower race (136) having main surfaces one of which is in contact with lower portions of the balls (134) and; a restricting means for restricting a displacement of the upper race (135) with respect to the shaft (110).

Abstract: In a compressor for refrigerant having a suction inlet for refrigerant and a pressure outlet for compressed refrigerant, said compressor comprising a compression unit and an electric motor driving said compression unit, said electric motor being a synchronous reluctance motor having a stator and a rotor, said rotor comprising a plurality of stacked disc elements, each disc element having a plurality of flux barriers configured to give the rotor core an anisotropic magnetic structure and formed as apertures in said disc element, it is provided that said flux barriers are arranged in said rotor core to define channels enabling a flow of refrigerant through said rotor core, said rotor is provided with a first support element acting on a first front side of said rotor core and a second support element acting on a second front side of said rotor core, said support elements being provided with cut-out sections and said cut-out sections being designed to uncover at least 70% of the cross section of apertures defined

Abstract: A rotatory compressor and a refrigerating cycle device are provided. The rotatory compressor includes a lubricating oil in an interior of a hermetically sealed housing, and an electric motor and a rotatory compressing mechanism disposed in the housing. An internal pressure of the housing is substantially equal to a suction pressure of the compressing mechanism. The compressing mechanism includes a first bearing and a second bearing at least one of which includes an exhaust muffler. A refrigerant of the exhaust muffler flows through the sliding vane chamber and is discharged from an exhaust pipe of the compressing mechanism.

Abstract: A roundel structure for a five-compressing-chamber diaphragm pump includes a cylindrical or inverted frustoconical eccentric roundel in an eccentric roundel mount. The cylindrical or inverted frustoconical eccentric roundel includes an annular positioning groove or indentation, a vertical or inverted frustoconical flank and a sloped top ring extending from the annular positioning groove or indentation to the flank. The sloped top ring eliminates the oblique high frequency pull and squeezing phenomena that occurs in a conventional tubular eccentric roundel arrangement.

Abstract: A turbine inlet housing has a main housing body extending about a central axis. An inlet duct delivers air into a cavity within the main housing body. Bolt hole bosses are formed on a downstream face of the inlet housing to receive bolts to secure an outlet housing to the inlet housing. A plurality of the bosses have a ramped surface which extends radially outwardly for a greater extent than a second plurality of bosses. The plurality of ramped bosses extend between the downstream face and the duct. The ramped bosses have a forward boss portion, and a ramped surface at an angle of between 50 and 54 degrees extending from an upstream end of the forward boss portion. A curved surface curves from an upstream end of the ramped surface to merge into the duct. A turbine stage and air cycle machine are also disclosed and claimed.

Abstract: In a method for controlling the operation of a compressor, the compressor is switched off by a controller in order to prevent thermal damage if an estimated temperature value calculated by the controller exceeds an upper threshold value. The controller calculates a cooling function as a state variable utilizing the estimated temperature value, the cooling function representing the chronological course of the cooling of the compressor. The controller determines the cooling function based on at least one first and one second estimated temperature value which are associated with points of the compressor that are at spatial distances to each other. The calculation of the cooling function is based on a temperature difference between the first and second estimated temperature values.

Abstract: The present invention refers to a crankshaft (1) for an alternative compressor comprising a main shaft (21) connected to an eccentric pin (2) by means of a peripheral flange (3) containing a lubricating hole (24) extending through said eccentric pin (2) and through at least part of the body of main shaft (21), one of the edges of said hole (24) being on the cylindrical surface (2a) of said eccentric pin (2). With this type of hole, the present invention allows for the use of shafts having extremely low diameters (and, as result, with low viscous loss), even with high eccentricities, whereby an excellent capacity of oil pumping and mechanical strength is maintained.

Abstract: A compressor includes: a cylinder; a crankcase; a piston arranged within the cylinder and the crankcase; and an outer rotor type motor causing the piston to reciprocate, wherein the outer rotor type motor comprises: a stator; a coil wound around the stator; a rotational shaft; a yoke connected with the rotational shaft; and a permanent magnet secured to the yoke, and the yoke is formed with an air hole.