Abstract: A fuel pump includes a case member defining a fuel passage, an inlet, and an outlet. A pump portion is provided in the fuel passage for pumping fuel from the inlet to the outlet. A motor portion is provided in the case member for driving the pump portion. A positive electrode terminal and a negative electrode terminal are provided for conducting electricity to the motor portion. A holder being insulative is provided inside the case member. The holder is mounted with the positive electrode terminal and the negative electrode terminal. The positive electrode terminal and the negative electrode terminal are resin-molded.

Abstract: The invention relates to a hydraulic apparatus comprising a hydraulic pump (30) which is connectable to a hydraulic fluid tank, an electric motor (2) as a drive means for the hydraulic pump (30), which electric motor comprises a motor shaft and a motor housing cover (4), and a control valve assembly (12) connected to the pump (30) to control at least one hydraulic consumer which is connectable to the pump (30) and is to be supplied by the pump (30) with hydraulic fluid from the hydraulic fluid tank, wherein the pump (30) is fixed on the motor housing cover (4) and the motor housing cover (4) comprises a holding adapter (10) on which the control valve assembly (12) is fixed.

Abstract: Described herein is an infusion pump with an integrated permanent magnet. The permanent magnet is positioned to provide an attractive force that moves an armature to compress a fluid-filled infusion tube. An electromagnet can be activated to overcome the attractive force of the permanent magnet and move the armature away from the infusion tubing. The force required to overcome the permanent magnet is much less than the force required to compress the tubing. For this reason the infusion pump has very low power consumption since much of the pumping work is provided by the permanent magnet.

Abstract: An electromagnetic actuator for a microfluidic pump of the type that causes periodic pinching and releasing against the walls of a fluidic channel, e.g., a tube. At least one permanent magnet is placed against the walls of the fluidic channel, and located in an area with magnetic fields, produced by coils that are radially symmetric to the channel. The permanent magnet is cause to press and release against the wall of the fluid channel to cause a fluid flow through the channel.

Abstract: An electric compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a drive circuit for controlling the electric motor. The drive circuit includes an external connector made of an insulating material. The external connector has a connecting terminal that is constructed to be electrically connected to an external power source. The drive circuit further includes a circuit board electrically connected to the connecting terminal and a filter element electrically connected to the circuit board. The drive circuit is accommodated in a metal housing. The filter element is integrally formed with the external connector such that contact of the filter element with the housing is prevented.

Abstract: An interior permanent magnet type brushless direct current (BLDC) motor includes a stator having a plurality of slots. The BLDC motor also includes a rotor positioned in the stator and that is rotatable with respect to the stator. The rotor has a rotor core, a plurality of permanent magnets inserted in the rotor core, a plurality of vent holes positioned between the center of the rotor core and the permanent magnets, and a plurality of coupling holes positioned between the permanent magnets and a periphery of the rotor core.

Abstract: A self-starting type axial gap synchronous motor includes a stator in which plural small stators are arranged on the same circumference; disc-shaped rotors in each of which plural permanent magnets facing the stator are arranged on the same circumference; and a shaft coupled to the rotors. Each of the disc-shaped rotors includes a metal frame that is provided so as to surround the plural permanent magnets arranged on the same circumference, and each of the metal frames is configured using a nonmagnetic and conductive material. Accordingly, it is possible to obtain a self-starting type axial gap synchronous motor that can be started by a commercial electric power without using an inverter, and a compressor and a refrigeration cycle apparatus using the same.

Abstract: The present invention is characterized in that it does not require specific fastening tools, which causes breakage or defects, or bonding work, because a brushless DC motor includes an insulator that is inserted in a stator to insulate a coil wound with led magnet wires and has at least one or more locking portions with locking grooves stepped on the inner side along the circumference and an outlet connector that has hooks fitted in the locking protrusions when being assembled with the insulator such that the insulator and the outlet connector are assembled in fitting and locking ways in assembling.

Abstract: A turbocompressor system including a high speed motor (10) including a rotor (12) mounted in a rotative manner relative to the stator, wherein on the rotor (12) one or more impellers (11) are directly fixed, the stator including active motor structures and a shell (7), including a ferromagnetic stator core (6) and a winding being constructed as toroidally wound coils (5), the shell (7) is constructed in such a manner as to create additional open space between the stator core (6) and the shell (7), constituting a cooling channel (15) through which process gas is passed axially for directly cooling the active motor structures and the rotor (12), prior to compression by the one or more impellers (11).

Abstract: An electric pump unit for a transmission, which supplies a hydraulic pressure to the transmission, includes: a pump which takes in and discharges oil; and a pump driving electric motor including a motor shaft connected to the pump, a motor rotor fixedly provided on the motor shaft, and a motor stator disposed around a circumference of the motor rotor. The pump and the electric motor are integrated with a lid that tightly closes an opening in a recess portion which is formed on a transmission housing of the transmission and into which the oil is introduced, and are accommodated within the recess portion.

Abstract: The present invention relates to a compressor in which a rotary member suspended on a stationary member is rotated to compress the refrigerant. The rotary member is suspended on a first stationary member and rotatably supported on a second stationary member spaced apart from the first stationary member to thereby achieve the structural stability, improve the operation reliability and reduce the vibration. The components can be easily centered and assembled with an excellent assembly property. In addition, a mounting structure of an elastically-supported vane is improved to ensure the lubrication performance and the operation reliability. Moreover, a mounting structure of a roller-incorporated vane is improved to reduce vibration and prevent refrigerant leakage, which leads to high compression efficiency.

Abstract: Inside of a gas-tight housing, an electric motor, an inverter and a compressor are housed. Further, an intake air pipe is connected to the gas-tight housing. Inside of the gas-tight housing, an intake air flow passage is formed. Further, a connection opening of an outside air induction pipe provided with a flow rate regulating valve is arranged so as to face a suction opening of a compressor. When the delivery air flow rate as well as the delivery air pressure of the compressor is reduced due to the pressure loss and the like of the intake air ‘a’ which passes through the air flow passage and cools the electric motor and the inverter, an outside air ‘o’ of low temperature is induced so that: the capacity shortage as well as the performance deterioration of the compressor is constrained; and the over-heating of the compressor is constrained.

Abstract: Embodiments of the present invention include a cable for connecting a downhole electrical submersible pump assembly to a control station the cable comprising a plurality of leads disposed in the cable, the plurality of leads disposed in a position that is substantially parallel to each of the other leads, each of the leads being separated by a distance, and each of the leads adapted to carry three phase electrical power to the electrical submersible pump; a plurality of insulated spacers disposed in between each of the leads, the insulated spacers having a width; the insulated spacers having a cross-section that is substantially shaped like an hourglass; and a plurality of optical fibers disposed substantially in the center of each of the spacers, the optical fibers adapted to sense the conditions of the well and electrical pump assembly, the fiber producing an optical signal for receipt by a downhole control circuit positioned near the motor.

Abstract: A rotary positive displacement pump for liquid medium having a main pumping mechanism driven by a magnetic coupling is disclosed. The positive displacement pump includes an integrated, positive displacement, circulating pump configured to provide a controlled medium flow through the magnetic coupling from a discharge side (0206) of the main pump back to a suction side (0205) of the main pump.

Abstract: A blower configured to be positioned in confined spaces and to provide ventilation of a fluid, such as temperature controlled air, is disclosed. In various embodiments, the blower is configured to have a reduced axial thickness, which can be desired in such confined spaces. In some embodiments, the blower has an integral filter, a wire channel for the routing of one or more wires, and/or an exposed backplate. In some embodiments, the blower has a snap-fit circuit board, containment system for mounting the motor, one or more vanes for directing fluid flow, shrouded impeller, and/or integrated connector.

Abstract: A cooling fan comprises a housing and a motor. The housing includes a support portion, a cover portion and a lateral wall portion, with the lateral wall portion disposed between the cover portion and the support portion, with the lateral wall portion, support portion and the cover portion defining a compartment, and with the lateral wall portion having at least one lateral air inlet and at least one lateral air outlet penetrating through the lateral wall portion and communicating with the compartment. The motor is mounted inside the compartment of the housing and contains a stator and a impeller, with the impeller rotatably mounting to the stator, and further containing a hub with a top and a plurality of blades, with the top facing the cover portion, with the top and the cover portion delimiting a lateral flow path in the compartment, and with each blade being contained in the lateral flow path.

Abstract: The present invention relates to a hermetic compressor (1) used in operating cooling devices like the refrigerator, comprising a casing (2) carrying the elements therein, an oil sump (3) forming the lower portion of the casing (2) and wherein oil (Y) is put providing the lubrication of the movable elements, an electric motor having a rotor (4) and a stator, a piston (5) providing the delivery of the refrigerant fluid in pressurized state to the refrigeration system, a cylinder block (6) wherein the piston (5) operates, a crankshaft (7) delivering the rotational movement of the rotor (4) to the piston (5) by changing it to linear movement and an oil pickup tube (9) mounted to the core of the rotor (4), the lower end of which is immersed into the oil (Y) in the oil sump (3) and the upper end extending upwards from the middle of the rotor (4) and which delivers the oil (Y) to the crankshaft (7) by sucking from the oil sump (3) and a hydrodynamic coupling (10) that transfers the rotational movement of the rotor (

Abstract: Disclosed herein is an automatic inflation pump including a housing (1), an air inlet (2), an air outlet (3) provided in the housing (1), a manual rotary switch, a sealing device located at the air outlet (3), an air pump (4) provided inside the housing (1) and a motor (5) for driving the air pump (4). The manual rotary switch is provided thereon with a dovetail groove which includes a deep groove (10) and two shallow grooves (101) located at both sides of the deep groove (10). The sealing device includes a driving stem (11) and an air sealing plate (12) for sealing the air outlet (3). One end of the driving stem (11) is connected with the air sealing plate (12). When the other end of the driving stem (11) is located in the deep groove (10) of the dovetail groove, the air sealing plate (12) closes the air outlet (3); and when the other end of the driving stem (11) is located in the shallow groove (101) of the dovetail groove, the air outlet (3) is opened. A spring (15) is provided on the driving stem (11).

Abstract: A reciprocating air pump with a frame and a pump for compressing air through a series of linear close-strokes and open-strokes between a first portion and a reciprocating portion. The pump includes plural cylinders, slideably and sealably engaged therein, and arranged as multiple-chambers defining multiple-stages, for compression of air. A manifold with an air inlet cavity and inlet vent, and a compressed air outlet cavity with outlet vent. An outlet valve body is disposed between the first portion and the manifold, with an outlet valve that directs high-pressure compressed air into the outlet cavity, and with an inlet port coupled to the inlet cavity. A reciprocating linear drive with an electric motor delivers linear force to the reciprocating portion. A control system sequentially alternated the direction of force of the reciprocating linear drive, thereby applying linear force to the reciprocating portion.

Abstract: A motor including a casing, a rotor, a stator and a separation member is disclosed. The rotor is rotatably coupled with the casing. The stator is disposed in the casing and drives the rotor to rotate. The stator includes a claw-pole member, an insulation member and a coil unit. The claw-pole member is coupled with the insulation member. The insulation member has a connection portion. The coil unit has a plurality of windings connected to each other via the connection portion. The coil unit is electrically connected to a circuit board, and a portion of the coil unit that is wound around the connection portion is an exposing portion. The separation member is disposed between the exposing portion of the coil unit and the casing.

Abstract: There is provided a hermetic compressor capable of supplying oil even in a low-speed operation. The hermetic compressor includes a hermetic contained filled with oil in a base thereof, a rotatably crank shaft having a screw-shaped oil groove in an outer portion thereof, and an oil feeder having an upper portion in which a lower portion of the crank shaft is inserted, the oil feeder having a lower portion immersed in oil of the hermetic container.

Abstract: An integrated-inverter electric compressor is provided, in which a change of the combination of weld plating layers provided on weld surfaces of an electrical connection terminal of an inverter can be allowed for easily. In an integrated-inverter electric compressor in which an inverter is integrally fitted to a compressor housing and an electrical connection terminal that electrically connects the inverter to an electric motor and/or an external power source is provided, one end of the electrical connection terminal has a wire-bonding weld surface for the inverter, the wire-bonding weld surface being provided with a weld plating layer for welding a bonding wire thereto, whereas the other end of the electrical connection terminal has weld surfaces for the electric motor and/or the external power source, the weld surfaces of two sides being respectively provided with different weld plating layers for connecting lead wires, bus bars, or terminals thereto.

Abstract: A motor-driven compressor has a compression mechanism, a rotary shaft, an electric motor, a motor drive circuit, a connecting terminal and a housing assembly. The compression mechanism, the electric motor, and the motor drive circuit are disposed along the axial direction of the rotary shaft in the housing assembly having first through third housings. The first housing is used for mounting the electric motor and the compression mechanism. The second housing has a terminal mounting portion for fixing the connecting terminal. The first and second housings have fastening portions at the radially peripheral portion thereof. The third housing is joined to the second housing to form an accommodation space for accommodating the motor drive circuit. The closed casing is formed by fastening the fastening portions of the first and second housings by means of a first bolt and connecting the second housing to the open end of the first housing.

Abstract: An electrical power cable for high temperature environments comprises two or more sheathed conductors; each sheathed conductor comprising an electrical conductor, an electrical insulator surrounding the electrical conductor, and a sheath surrounding the electrical insulator; and a bonding material interconnecting the sheaths of the two or more sheathed conductors positioned adjacent to one another to form a cable.

Abstract: A blood pump includes a rotor having a flared portion downstream proximate a downstream bearing that supports the rotor. The flared portion of the rotor includes a width greater than a width of an upstream portion of the rotor. A blood pump also includes a housing having an internal wall with a flared portion downstream of a motor stator and proximate a transverse outlet.

Abstract: Systems and methods for insulating the Y-points of three-phase electric motors commonly used in ESP systems, in which the Y-points are not grounded or tied to a reference voltage, and may consequently experience high voltages. One embodiment is an apparatus for insulating the Y-point of the motor using an electrically insulating enclosure. The enclosure has apertures that extend from a cavity therewithin the to the exterior of the enclosure. The cavity accommodates the Y-point of the motor. The conductors which are connected at the Y-point junction extend from the cavity to the coils of the three-phase motor, and possibly to an instrument package. Seals are formed at the apertures to provide an electrically insulating barrier between the Y-point and the exterior of the enclosure. The cavity may be filled with an insulating material such as potting compound or oil.

Abstract: A motor stator (24) has a stator iron core (24a), a stator winding (24b), and a mold member (30) embedding them in an inner portion and having a high coefficient of thermal conductivity. The mold member (30) has a heat insulating layer (32) closely attached to an inner surface thereof surrounding a motor rotor (22) and to an outer surface thereof in an axial direction. Further, an outer sleeve (26) is provided so as to be closely attached to an outer peripheral surface of the mold member (30) and to an inner surface of a bearing housing (16). The outer sleeve (26) forms a liquid tight water cooling jacket (26b) between the outer sleeve and the bearing housing.

Abstract: There is provided an integrated electric compressor that is improved in reliability. Bus bar connection is employed for electrical connection between a power board 16 and the power source side and between the power board 16 and the motor side, and welding is employed for joining a bus bar to a capacitor 13 and a reactor 14, for joining board-side terminal parts of the bus bar to PN terminals 20a and 20b, and for joining UVW terminals 25a, 25b and 25c to housing-side terminals 28a, 28b and 28c. By employing resistance welding for the welding, the terminals can be joined to each other with stabilized quality. Further, since flat joint plates are provided on one end side of the housing-side terminals 28a, 28b and 28c, and the UVW terminals 25a, 25b and 25c are welded thereto, reliable joints between terminals can also be attained in these portions.

Abstract: The invention relates to a fuel conveying device for conveying fuel towards an internal combustion engine. The fuel conveying device comprises a housing and a head connected to the housing. Further, a fuel pump is provided, having an electronically commutated brushless motor. The control electronics for the electronically commutated brushless motor of the fuel pump are carried by or arranged within and/or on the head or housing.

Abstract: A motor-driven compressor includes a shell, an electric motor, a first conductor electrically connected to an external power source, a second conductor electrically connected to the electric motor, a connector connecting the first conductor and the second conductor and a connector case. The connector case has a first case member, a second case member, a first and a second seal members interposed between the first and the second case members, a hole through which the first conductor is inserted and a third seal member sealing between the first conductor and the connector case. A first main seal of the first seal member and a second main seal of the second seal member cooperate to form a cylindrical seal portion for sealing the second conductor that is inserted through the cylindrical seal portion when the first and the second seal members are joined.

Abstract: A miniature heat-dissipating fan includes a stator and a rotor. The stator has a first leakage flux absorber and a coil layer that is arranged on the first leakage flux absorber and has a plurality of coils. An annular wall is formed on an outer edge of the first leakage flux absorber of the stator to define an air inlet, an air outlet and a compartment. The first leakage flux absorber has a shaft tube in the compartment and the coil layer is mounted around the shaft tube. The rotor is received in the compartment of the stator and has an impeller, a second leakage flux absorber and a permanent magnet. The impeller has a shaft rotatably inserted in the shaft tube of the stator and both the second leakage flux absorber and the permanent magnet are attached to a bottom of the impeller.

Abstract: A lead wire engaging structure includes a first engaging portion and a second engaging portion. One end of the first engaging portion and one end of the second engaging portion are integrally provided at a first mounting portion integrally provided at a second casing wall portion. The first engaging portion forms a first gap between the first engaging portion and the second casing wall portion, and engages four lead wires in cooperation with the second casing wall portion. The first gap allows the four lead wires to pass therethrough. The second engaging portion forms a second gap between the second engaging portion and the first engaging portion. The second gap allows the four lead wires to pass therethrough. The other end portion of the first engaging portion and the other end portion of the second engaging portion are coupled to each other by a coupling portion.

Abstract: A personal motorized cooling fan designed to retract and fold into a vertical tower for economy of shipping, storage and desk space. Each fan blade includes a blade portion and a root portion that rides in a race that guides the blades as they splay during rotation. When the fan is turned on, the rotation of the shaft and therefore race, combined with centrifugal force, causes the blades to splay forming a radial array. A protective cage including an array of longitudinal members expands in a fan-like manner. The cage is engaged with ribbons of stretch fabric that retract and fold along with the cage and blades after use. The entire assembly folds tidily into a slender tower.

Abstract: An inverter-integrated electric compressor that is capable of solving various problems caused by thermal expansion of a gel material filled inside an inverter accommodating section for vibration prevention and moisture prevention and capable of increasing reliability is provided. In the inverter-integrated electric compressor, an inverter accommodating section (11) is integrated with a periphery of a housing (2) accommodating an electric compressor; an inverter device (20) is accommodated inside the inverter accommodating section; a gel material (30) for vibration prevention and moisture prevention is filled in the upper section thereof so as to leave an air layer (31); an upper opening in the inverter accommodating section is sealed with a cover member (18); and a vent valve (40) formed of a moisture-permeable waterproof membrane (42) is provided in the cover member.

Abstract: A magnetically coupled fluid actuator for microfluidic applications which affords the actuated fluid some degree of separation from the drive mechanism, increasing biocompatibility and making part of the device potentially disposable.

Abstract: A motor-driven compressor has a compression mechanism, a rotary shaft, an electric motor, a motor drive circuit and a housing assembly. The compression mechanism, the electric motor and the motor drive circuit are disposed along the axial direction of the rotary shaft in the housing assembly. The housing assembly has first and second housings. The first housing mounts the electric motor and the compression mechanism. The first housing has first and second mounting lugs formed integrally with the peripheral surface of the first housing. The second housing is joined to the first housing for accommodating the motor drive circuit. The second housing has a third mounting lug formed integrally with the second housing. The first through third mounting lugs are fastened to a mounting object to which the motor-driven compressor is to be mounted by means of fastening members.

Abstract: A dual drive pump system for rear wheel or front wheel drive automatic transmission in a motor vehicle includes a dual drive pump disposed off-axis of the transmission input shaft axis and driven by a gear train driven by a hub. The dual drive pump is also driven by a gear train driven by an auxiliary motor. Torque multiplication through the gear train allows the dual drive pump to have a smaller displacement while still providing the hydraulic pressure needs of the transmission. The dual drive pump may be driven by either an engine or the auxiliary motor depending on the operating conditions of the motor vehicle.

Abstract: A line-start brushless permanent magnet motor assembly includes an unconventional combination of a rotor assembly including a plurality of permanent magnets mounted thereon, and a stator assembly including aluminum winding coils. The unique combination of construction features leads to significant motor performance enhancements at lower incremental cost. The line-start brushless permanent magnet motor assembly may be incorporated into a hermetic compressor, such as may be used in an air conditioning system, to meet high efficiency standards (e.g., seasonal efficiency energy rating). The disclosed embodiments have an efficiency of at least 90% with winding coils consisting essentially entirely of aluminum.

Abstract: A motor direct driven compressor system includes a motor, a coupling and a compressor, and the coupling is coupled between the motor and the compressor, and a second assembling portion, a coupling portion and a metal plate of the coupling are used for connecting a driving shaft of the motor and a transmission shaft of the compressor. With this design, the driving force of the motor can be transmitted to the compressor and provided for the operation of the compressor. In addition, errors produced by the rotation and transmission during the transmission process can be minimized, so that the compressor can be operated accurately and normally.

Abstract: An electrically powered pump including a housing having a plurality of coils disposed in a circumferential direction of the housing, an outer rotor rotatably disposed on an inner circumferential side of the housing and having a plurality of permanent magnets, an inner rotor disposed on an inner circumferential side of the outer rotor so as to be rotatable about a rotation axis eccentric relative to a central axis of the outer rotor, the inner rotor having a plurality of slots which extend in a radial direction of the inner rotor, and a plurality of connection plates each having an outer radial end portion pivotably supported on an inner circumferential portion of the outer rotor and an inner radial end portion slidably received in the respective slots, the connection plates dividing a space formed between the outer rotor and the inner rotor into a plurality of chambers.

Abstract: A device and method of tailoring a pump lift capacity of a pump for an electrical submersible pumping unit (ESP). The pump unit of the ESP has a plurality of stages, each made up of an impeller and a diffuser. The ESP has a pump lift capacity, which is ideally matched with well capacity. The well capacity is, therefore, the target lift capacity. To facilitate matching of pump lift capacity and well capacity, one or more stages of the pump unit may be replaced with a spacer assembly to reduce pump lift capacity by a desired amount. The spacer assembly may include a shaft bearing support made up of an outer ring and an inner ring, wherein the outer and inner ring are connected by webs, which allow oil to flow through the support. The spacer assembly may be axially located on the pump shaft via compression tubes.

Abstract: Provided is an inverter-integrated electric compressor having high heat resistance, which is capable of suppressing thermal interference among a plurality of power devices. Specifically provided is an inverter-integrated electric compressor which comprises a built-in motor and a substrate provided with a motor drive circuit including an inverter, an electric component including the substrate being affixed in a housing space surrounded by a compressor housing, wherein a plurality of power semiconductor elements which constitute the motor drive circuit are disposed radially around a drive shaft of the motor in a plane crossing the drive shaft. For example, the planar shape of the power semiconductor element is formed into a rectangle, and a gap having a sectorial planar shape is formed between the power semiconductor elements adjacent to each other.

Abstract: A fluid vapor distillation apparatus. The apparatus includes a source fluid input, and an evaporator condenser apparatus. The evaporator condenser apparatus includes a substantially cylindrical housing and a plurality of tubes in the housing. The source fluid input is fluidly connected to the evaporator condenser and the evaporator condenser transforms source fluid into steam and transforms compressed steam into product fluid. Also included in the fluid vapor distillation apparatus is a heat exchanger fluidly connected to the source fluid input and a product fluid output. The heat exchanger includes an outer tube and at least one inner tube. Also included in the fluid vapor distillation apparatus is a regenerative blower fluidly connected to the evaporator condenser. The regenerative blower compresses steam, and the compressed steam flows to the evaporative condenser where compressed steam is transformed into product fluid.

Abstract: Methods and devices for moving a droplet on an elongated track on a textured surface using vibration. The elongated track on the textured surface includes a plurality of transverse arcuate projections such that a droplet on the surface is in the Fakir state and when the surface is vibrated the droplet is urged along the track as a result of an imbalance in the adhesion of a front portion of the droplet and a back portion of the droplet to the textured surface.

Abstract: An electric pump unit includes an outer rotor, an inner rotor which meshes with the outer rotor in such a state that the inner rotor and the outer rotor are placed eccentrically to each other and which is driven by being supported by a rotation shaft of an electric motor, a pump housing which defines a cavity portion which accommodates therein the outer rotor and the inner rotor, inlet and outlet ports which are provided on inlet and outlet sides, respectively, so as to suck and discharge a fluid and which communicate with each other via the cavity portion, and a fluid circulating unit for circulating the fluid from the outlet side to the inlet side when a fluid pressure at the outlet side reaches or exceeds a predetermined pressure.

Abstract: The purpose present invention is to provide an air refrigerant type cooling apparatus provided with an internal air cooling mechanism with high reliability and efficiency. Another object of the present invention is to provide an air refrigerant cooling/heating system with a simplified configuration using the air refrigerant type cooling apparatus. To accomplish the purpose, a heat radiating means is provided in a motor of an air refrigerant type cooling apparatus having a compressor, the motor and an expansion turbine in the present invention. Also, a pressure difference is positively generated between the inside and outside of the motor. By these means, when the motor is driven, the heat from the stator main body is exhausted to the outside of the motor through the heat radiating means and the heat from the coil end portions is exhausted through the cooling air exhausted from the inside to the outside of the motor.

Abstract: Disclosed is a motor-driven compressor for a vehicle adapted to fix a connector of an electric motor for a vehicle compressor. The compressor for a vehicle includes a rotor configured be rotated by an electromagnetic force generated when a current flow through a coil, a stator having at least one connector fixing slot, and a connector having a body fixed to the connector fixing slot.

Abstract: A pump assembly as a feedback pump of a hydraulic, slip-controlled vehicle brake system having a piston pump and an electric motor for driving it is disclosed. The electric motor is embodied as an external rotor and the stator is mounted on a printed circuit board which has an electronic system for commutating the electric motor and/or for performing slip control of the vehicle brake system.

Abstract: Disclosed is an electric motor-driven compressor having a structure capable of improving the performance of an electric motor of the electric motor-driven compressor for the vehicle. The electric motor-driven compressor has an angle which is formed by two straight lines passing through a center of the rotor and making contact with both end portions of one permanent magnet, and is in a range of about 48.7° to about 51°. The cogging torque and the torque ripples are minimized, the power of the electric motor is improved, and the electric motor is easily controlled.

Abstract: A motor for a compressor comprises: a stator including a plurality of slots each having a slot opening, teeth formed between neighboring slots; and a rotor arranged at an inner side of the stator, a number of permanent magnet holes, the number of which is same as a number of magnetic poles, and permanent magnets. The rotor includes at least a first pair of slits, provided at an outer peripheral core part of the permanent magnet inserting hole, extending orthogonally to the inserting hole, arranged symmetrically with respect to a magnetic pole center, and a distance between the first pair of slits is smaller than a width of the teeth; and a second pair of slits, arranged at an outer inter-pole side of the first pair of slits, provided at a position where the tooth and the magnetic pole center of the rotor match, and facing the slot openings.