Abstract: Provided is a compressor motor that can achieve reduction in length of a motor lead wire, compactification of a motor housing, and reduction in size and weight of an electric compressor, and also provided is an electric compressor including the compressor motor. A cluster block (39) that is connected to a stator coil end of a motor (10) via a motor lead wire is placed in an outer circumferential region of a stator coil end cover (38) or a bobbin (37A) of the motor (10) such that a terminal connection port of the cluster block (39) faces an outer circumferential side. An opening (34) and a placement bearing surface (35) for inserting and placing a hermetic terminal (8) are provided in an outer circumferential region of a motor housing (4), the outer circumferential region facing the cluster block (39) provided on the motor (10) side.

Abstract: A brushless motor includes a rotor and a stator. The stator includes a first core and a second core opposing the first core, between which the rotor is disposed. Each of the first core and the second core includes U-phase teeth, V-phase teeth, and V-phase teeth, each of which is extending parallel to one another and having a tip end opposing the rotor. A tooth located at one end of the first core and a tooth located at another end of the second core are connected to one another by a first nonmagnetic member, and a tooth located at another end of the first core and a tooth located at one end of the second core are connected to one another by a second nonmagnetic member.

Abstract: A stator of a motor may comprise a first core, a second core and a resin layer. Each of the first core and the second core may comprise a yoke and three pieces of teeth configured to be disposed on the yoke. The resin layer may comprise a first void configured to contact a first opposing surface, opposing the second core, of the first core and contact a second opposing surface, opposing the first core, of the second core and a second void configured to contact a first part, extending parallel to a direction along which the first core opposes the second core, of a surface of the first core and contact a second part, extending parallel to the direction along which the first core opposes the second core, of a surface of the second core.

Abstract: An object is to provide a highly reliable vehicle-air-conditioner electric compressor of an inverter-integrated type that minimizes vibration and deformation of a board and a bus bar caused by vibration of a vehicle so as to prevent devices from becoming detached, to prevent soldered sections and welded sections from rupturing, and to prevent short circuits from occurring.

Abstract: A rotary pump including an impeller rotatable within a housing. A load is imposed on the impeller as it rotates, in a direction that is substantially parallel to the axis of rotation and wherein the load stabilises the motion of the impeller. The load may be achieved by magnetically biasing the impeller.

Abstract: A structural improvement of the canned pump is to improve the stiffness of a stationary shaft and, according to requirement, to dispose a monitor device. The method for improving the stiffness of the stationary shaft includes axially inserting a shaft metal rear support of the metal structural of a motor rear casing of a canned motor into the inner side of a rotor yoke of an inner rotor of the canned motor, tightly attaching the shaft metal rear support to a rear shaft seat for improving the stiffness of the stationary shaft by longer hold length, and for shortening an arm length of the composite force. The monitor device, used for detecting the wear of a bearing for enhancing the reliability and satisfying the driving requirement, is installed in the ring slot to be protected by the rear shaft seat.

Abstract: A centrifugal blower apparatus includes a scroll-shaped housing with first and second air inlets which open to a blower chamber that is in fluid communication with an air outlet. The blower includes a motor to drive impellers, wherein the motor is secured to a frame coupled within the housing in a manner to substantially enhance aerodynamic performance of the blower.

Abstract: A first seal portion having a surface of a lubricating oil defined therein is defined between a sleeve portion and a bearing housing. A side communicating channel arranged to bring a first seal gap and a thrust gap into communication with each other is defined either between a sleeve portion and a bearing housing or in an outer circumferential portion of a sleeve portion. A second seal portion having another surface of a lubricating oil defined therein is defined in a gap constituted by a side minute gap between a thrust plate and a bearing housing and a lower minute gap between a thrust plate and a cap member.

Abstract: A centrifugal blower apparatus includes a scroll-shaped housing with first and second air inlets which open to a blower chamber that is in fluid communication with an air outlet. The blower includes a motor to drive an impeller, wherein the motor is secured to a frame that is coupled with the housing in a manner to substantially enhance aerodynamic performance of the blower.

Abstract: A brushless motor comprises a rotor and a stator comprising a plurality of core plates laminated on one another. The core plates include a plurality of teeth portions. The plurality of core plates includes a first core plate and a second core plate, a combination of magnetic resistances of the teeth portions of the first core plate being adjusted at a first condition, and a combination of magnetic resistances of the teeth portions of the second core plate being adjusted at a second condition. Magnetic resistances of magnetic paths formed by the plurality of laminated teeth portions are adjusted to be same by adjusting a ratio of a number of the first core plates to a number of the second core plates.

Abstract: A heat-dissipating fan includes a shaft seat. A coil base is coupled to the shaft seat. The coil base includes a base portion and a coil unit coupled to the base portion. The base portion includes a connection port electrically connected to the coil unit. The connection port is connected to a drive circuit. An impeller includes a hub and a permanent magnet. A shaft is coupled to the hub and rotatably coupled to the shaft seat about an axis. The permanent magnet is coupled to the hub and aligned with the coil unit. Since the coil base does not include electronic elements of the drive circuit, the axial height of the heat-dissipating fan is reduced, and the structure of the heat-dissipating fan is simplified.

Abstract: A DC motor includes a rotor, a cup-shaped stator, and a drive control unit. The cup-shaped stator includes a cylindrical winding portion surrounding the rotor. The cylindrical winding portion includes an inner periphery formed by at least one conductive wire and facing an outer periphery of a permanent magnet of the rotor with an air gap formed between the cylindrical winding portion and the rotor. A drive control unit is electrically connected to the cylindrical winding portion and a power source. The DC motor can be mounted in a compartment of a housing, and an impeller can be coupled to the shaft, forming a DC fan. The DC motor and the DC fan possess high control sensitivity and high control precision while having simplified structures to allow easy assembly.

Abstract: A brushless motor includes a rotor and a stator. The stator includes yokes and a plurality of teeth. Base ends of the teeth are connected to the yokes, and tip ends of the teeth oppose an outside surface of the rotor with an interval in between. The plurality of teeth include a pair of first teeth connected to both ends of the yokes and second teeth connected to centers of the yokes. The first teeth are connected to the yokes in a first direction, and the second teeth are connected to the yokes in a second direction which is different from the first direction.

Abstract: In an axial fan including a motor, a substrate that connects the ends of a plurality of coils is disposed at a position axially under the bottom portion of a case with an axial gap therebetween. A spacer is interposed between the substrate and the bottom portion, and the substrate is fixed to the spacer. A plurality of through holes provided in the bottom portion are disposed in axial alignment with a plurality of through holes provided in the spacer. An air flow produced by rotation of an impeller at least partially passes through the interior of the case to be discharged to the outside of the case through the through holes in the bottom portion and in the spacer so that heat generated inside the motor can be efficiently transferred to the outside of the case.

Abstract: A fan module assembly includes at least one a rotatable fan (38) having blades (39) with tips of blades being joined by an annular fan band (42). An electrically conductive squirrel cage (46) is associated with the fan band to rotate therewith. Flux receiving structure (48) is associated with the fan band. A shroud (40) has a shaft (54) with the fan being associated with the shaft so as to rotate about the shaft and with respect to the shroud. Control structure (52) is mounted stationary with respect to the shroud generally adjacent to a portion of the fan band. The control structure is constructed and arranged to generate a changing magnetic field, generally at the radius of the fan band, which interacts with the flux receiving structure and the squirrel cage to cause the fan to be driven by tangential force.

Abstract: A rotary pump with a plastic pump housing, that can be processed by injection molding, with a first housing part defining a pump space, which is connected to a second intermediate housing part accommodating an electric motor with a wound core stator. The rotary pump includes a plastic split core, the wound claw pole stator being mounted on the split core and a permanent magnetic rotor being mounted to rotate within the split core. A plastic motor housing part defines a motor space, wherein at least three axial and parallel split core ribs are provided between the split core and the claw pole stator, the ribs being distributed about the periphery of the split core at predetermined angles relative to each other. A return ring has first and second end sections, the return ring being connected to the wound claw pole stator, so that the first and second end sections are welded to each other. The stator is press-fit onto the split core via the ribs.

Abstract: A cooling fan includes a fan frame, a circuit board, a stator-coil unit and an impeller. The fan frame includes a metal seat and a lateral wall. The metal seat comprises an engaging face and an engaging portion arranged on the engaging face. The lateral wall is arranged on a periphery of the metal seat and includes an air inlet and an air outlet. The circuit board includes a positioning hole. The circuit board is press fitted around the engaging portion of the metal seat via the positioning hole and adhered to the engaging face of the metal seat. The circuit board includes an insulation layer facing the metal seat. The stator-coil unit is mounted on the metal seat of the fan frame and electrically connected to the circuit board. The impeller is rotatably coupled with the stator-coil unit.

Abstract: An electric motor has a stator, a rotor and brush gear. The rotor includes a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft, and rotor windings wound on the rotor core and electrically connected to the commutator. The brush gear includes at least two arcuate brushes for making sliding contact with the commutator. The commutator and brush gear are disposed within a space formed in the rotor core to minimize the axial length of the motor.

Abstract: A stator device includes a base having a shaft tube receiving a bearing. The shaft tube includes a top end having at least one groove. A stator unit is mounted around an outer periphery of the shaft tube. The stator unit includes at least one limiting member extending through the at least one groove into the shaft tube. The at least one limiting member prevents the bearing from disengaging from the shaft tube, enhancing assembling convenience. The stator can be coupled with a rotor to form a motor with enhanced assembling convenience and enhanced rotational stability. The base can be interconnected by connecting members to a housing having air inlet and outlet sides. Vanes can be formed on the hub of the rotor to form an impeller. Thus, a heat-dissipating fan can be formed from the stator device.

Abstract: A brushless motor has a stator and an outer rotor. The stator includes a stator core having 6N teeth and 6N coils wound respectively around the teeth where N is an integer equal to or greater than 1. The rotor includes 6N±2 permanent magnets. The permanent magnets are arranged circumferentially around the stator core and face the teeth across an air gap. The radial thickness of the air gap is uneven along the circumferential direction of the motor.

Abstract: A pump motor includes a stator, a rotor and a housing accommodating the stator and the rotor. The stator has a plurality of teeth, each of the teeth being provided with a cap portion at its tip end. The rotor is arranged inside the stator in an opposing relationship with the cap portion of each of the teeth. The housing includes a fluid path defined therein. The fluid path includes a substantially annular gap axially extending between the stator and the rotor. The cap portion includes a first opposing surface and a second opposing surface provided in an opposing relationship with the rotor to define a portion of the fluid path, the distance between the first opposing surface and an outer circumferential surface of the rotor being greater than the distance between the second opposing surface and the outer circumferential surface of the rotor.

Abstract: An inner rotor type motor includes a base having a pivotal portion. A stator is mounted to the base and includes a body and a coil unit engaged with the body and surrounding a hole of the body. A rotor includes a rotatable member, a shaft, and a permanent magnet. The rotatable member includes an engaging portion and a sidewall provided along a periphery of the engaging portion extending into the hole of the stator. The shaft includes an end coupled to the engaging portion. The other end of the shaft is coupled to the pivotal portion. The permanent magnet is mounted to an outer periphery of the rotatable member and aligned with the coil unit. The axial length of the shaft without the permanent magnet mounted thereto can be reduced, allowing reduction of axial heights of the motor and a heat dissipating fan utilizing the motor.

Abstract: A pump device may include a first case provided with a circular ring-shaped protruded part, a second case provided with a circular ring-shaped stepped part into which the circular ring-shaped protruded part is coaxially inserted, an O-ring which is mounted on a circular outer peripheral face of the circular ring-shaped protruded part and is crushed between the circular outer peripheral face of the circular ring-shaped protruded part and a circular inner peripheral face of the circular ring-shaped stepped part in a direction perpendicular to an axial line of the circular ring-shaped protruded part, and a turning prevention mechanism which prevents the first case and the second case from being relatively turned to each other around the axial line when the circular ring-shaped protruded part of the first case is inserted into the circular ring-shaped stepped part of the second case to form the pump chamber.

Abstract: A miniature fan includes a housing having a mounting portion with a shaft seat. A base is mounted to the mounting portion of the housing. The base includes first and second faces spaced along an axis. An outer layer is provided on the first face of the base. A bottom layer is provided on the second face of the base. The base further includes a coil unit intermediate the outer layer and the bottom layer. The coil unit is electrically connected to a drive circuit. An impeller includes a shaft and a permanent magnet. The shaft is coupled to the shaft seat of the housing and rotatable about the axis. The permanent magnet is aligned with the coil unit. The axial height of the miniature fan is reduced, and the structure of the miniature fan is simplified.

Abstract: A wet-running pump comprises a rotor which is connected to a pump wheel and which is arranged in a wet area adapted to have a guided fluid passed therethrough. The wet area is separated from a dry area wherein a stator which cooperates with the rotor, is arranged. The wet area is separated from the dry area by a conductor plate, wherein the electric lines thereof form the stator such that the conductor plate simultaneously forms a separating can, thus simplifying the construction and mounting of the wet-running pump.

Abstract: An electromagnet comprises a plurality of nested freestanding electrically insulating former layers, and electrically conductive wire wrapped around the outsides of the freestanding electrically insulating former layers to define a multilayer electrical coil in which adjacent layers of the multilayer electrical coil are spaced apart by intervening freestanding electrically insulating former layers. Electrically energizing the multilayer electrical coil generates a magnetic field inside the multilayer electrical coil. In some embodiments the electrically conductive wire is bare wire not having electrical insulation. In some embodiments the former layers comprise a ceramic material. In some such embodiments the electromagnet further comprises a ferromagnetic core disposed inside the multilayer electrical coil. An electric motor employing such an electromagnet as a stator pole is also disclosed.

Abstract: A rotary pump (1), which can be operated by an electronically commutated DC motor (56) with an axial gap, with a dry space (54), in which a wound stator (55) is accommodated, and a fluid-fillable pump space (13), in which a permanent magnetic pump impeller (5) is accommodated to rotate, the pump impeller (5) being separated by a split plate (18) from stator (55), which is connected to a return ring (27), to which several poles (15) are connected, and a circuit board (17), and is in heat-conducting contact with it, and includes a heat conducting element (10) from a good heat conducting light metal. The heat conducting element (10) consists essentially of a disk (40) aligned at right angles to the motor shaft or an annular disk with a coaxial tube (39) extending in the direction of the pump impeller in one piece with it, open or closed toward the motor shaft, and that the circuit board (17) is connected to the heat-conducting element (15) on the side facing away from the pump impeller (5).

Abstract: The invention concerns an axial fan (1) having a motor comprising a stator (2) and a rotor (3), wherein blades (4), which move a gaseous medium in an axially directed main flow direction (S) from an inlet side (E) to an outlet side (A) of the fan, project from the outer periphery (U3) of the rotor (3). For enhanced performance with regard to efficiency in a structurally less costly manner, a rotation-symmetric flow guiding element (5) is mounted on the outlet side (A) directly or indirectly on the stator (2) and concentrically with respect to a stator hub (2a). The flow guiding element to have an outer diameter (D5) that is greater than the outer diameter (D2) of the stator hub (2a) greater than the outer diameter (D3) of the rotor (3), and smaller than the diameter (D4) of a perimeter (U4) around the blades (4).

Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion. The stationary portion includes a stator and a bearing portion. The bearing portion includes a sleeve and a bearing housing. The rotating portion includes a rotor magnet, a shaft, and a thrust plate. A radial gap includes a radial dynamic pressure bearing portion arranged to generate a fluid dynamic pressure acting axially downward on a lubricating oil, while a thrust gap includes a thrust dynamic pressure bearing portion arranged to generate a fluid dynamic pressure acting radially inward on the lubricating oil. A circulation hole extending in an axial direction is defined between the bearing housing and the sleeve. The radial gap is arranged to have a radial width in a range of about 5 ?m to about 20 ?m.

Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.

Abstract: A dynamic pressure bearing apparatus includes a bearing portion; a shaft; a substantially annular bushing; a radial dynamic pressure bearing portion; and a seal gap. A minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the bushing. The seal gap is arranged to be in communication with an exterior space through the horizontal gap.

Abstract: A suction device for dental, medical and industrial purposes with a radial fan with a suction side and a delivery side. An air outlet of a centrifugal separator is connected to the suction side of the fan. At least one drive motor controlled by a control unit, and in the form of a rotating electric motor, drives the fan and the separator. A fan drive motor and a separator drive motor are arranged, uncoupled in terms of rotation, one behind the other on a common shaft fixed to the housing. The respective stators are supported by the common shaft. The rotating parts of the fan are connected to the rotor of the fan drive motor, and the rotating parts of the separator are connected to the rotor of the separator drive motor and are mounted to rotate coaxially with respect to the shaft fixed to the housing.

Abstract: A centrifugal blower in a cooling system of an electronic device having asymmetrical blade spacing with acceptable balance. The asymmetrical blade spacing is determined according to a set of desired acoustic artifacts that are favorable and balance that is similar to that found with equal fan blade spacing. In one embodiment, the fan impeller can include thirty one fan blades. The perceived sound quality from the fan is improved with essentially no effect on the thermal performance of the fan.

Abstract: A centrifugal blower in a cooling system of an electronic device having asymmetrical blade spacing with acceptable balance. The asymmetrical blade spacing is determined according to a set of desired acoustic artifacts that are favorable and balance that is similar to that found with equal fan blade spacing. In one embodiment, the fan impeller can include thirty one fan blades.

Abstract: A centrifugal blower in a cooling system of an electronic device having asymmetrical blade spacing with acceptable balance. The asymmetrical blade spacing is determined according to a set of desired acoustic artifacts that are favorable and balance that is similar to that found with equal fan blade spacing. In one embodiment, the fan impeller can include sixty one fan blades.

Abstract: An inner drive for a magnetic drive pump includes a magnet supported on a yoke. The inner drive is driven about an axis to pump a corrosive process fluid. The magnet and yoke are fully encapsulated during the molding process to completely surround the magnet and yoke in a protective plastic shell. A sleeve is arranged radially outwardly of the magnet to provide further protection. Backing rings are arranged on either side of the magnet. A bonding material joins the plastic shell to the backing rings and sleeve to prevent a space from forming beneath the plastic shell that would become filled with the process fluid once it has permeated the plastic shell. A protective coating is arranged on at least a portion of the magnet to further insulate the magnet from the process fluid.

Abstract: A pump unit is provided having a wet-running electric motor, wherein a rotor of the pump unit can be driven by the electric motor at a maximum speed of greater than 20,000 rev/min, and the rotor is sealed off axially in the region of a suction port.

Abstract: An exemplary heat dissipation fan includes a rotor and a stator. The rotor includes a hub, a central shaft extending down from a top end of the hub, the shaft having a free end far from the top end of the hub. A magnetic element attached to an inner periphery of the hub. The stator includes a stator core consisting layers of yokes, two insulation frames mounted at two opposite ends of the stator core and a coil wound around the insulation frames. An outer surface of the stator faces and is spaced from an inner surface of the magnetic element of the rotor with a clearance defined therebetween. A width of a bottom end of the clearance adjacent to the free end of the shaft being smaller than a width of a top end of the clearance.

Abstract: In an inverter control apparatus in which a control circuit board is fixed by use of pin-like terminals provided in a power board, the breakage of the pin-like terminals is prevented. The power board 160 is provided with a plurality of signal transmission terminals 210a, 210b, 220a, 220b for signal transmission to and from the control circuit board 150 and for grounding along each of a pair of opposed sides, the control circuit board 150 is electrically connected to the plurality of signal transmission terminals 210a etc. and is fixed by soldering to the plurality of signal transmission terminals 210a etc., and the plurality of signal transmission terminals 210a etc. are arranged along each of the pair of sides in a plurality of rows.

Abstract: A rotor (11) with a squirrel cage and permanent magnets (19) mounted on and distributed around the circumference of the rotor, including a core stack extending over the entire rotor region with longitudinally continuous rotor slots extending over the length of the core stack. The squirrel cage is constructed with cage bars disposed, and preferably cast, in the rotor slots; short circuit rings connect the cage bars at both end faces of the core; and the radius of the rotor region is reduced by at least the radial thickness of the magnets. The radius of rotor (11) is reduced over the entire length between short circuit rings (17) such that the radial height of cage bars (15, 29) or cage webs (27) connected thereto is reduced. Also an electric motor or a radial pump having such a rotor, and methods of producing or operating such devices.

Abstract: A rotary pump (1) with a multipart pump housing (4), comprising a suction connector (6) and a pressure connector (7), a pump impeller (5) mounted on a fixed shaft (3), the pump rotor (5) being designed as a permanent magnetic rotor cooperating with an electromagnetic stator. The task of the invention in a rotary pump is to achieve excellent efficiency in a compact design. The rotary pump is also supposed to guarantee high lifetime and improved heat removal. This task is solved according to the invention in that the shaft (3) is firmly connected to a first pump housing (2), referred to as pump head, which includes the suction connector (6) or is connected to it, the shaft (3) forming an axis of symmetry to an inside wall area of pump head (2).

Abstract: A miniature fan, particularly an axial fan, has a space-conserving structure which permits sophisticated electronic control circuits within a limited amount of space. It features an electronically commutated motor (ECM) including an internal stator 68, an external rotor 27 on a shaft 62, and a fan wheel 28 mounted on the rotor and bearing fan blades 26. The motor flange 40? supports a bearing tube 60 which rotatably journals the rotor shaft 62 and is formed with a cavity 84 which receives a first circuit board 86 devoted to control of motor speed and/or voltage, and a second circuit board 96 which supports a galvanometric sensor 100 which senses the rotational position of the rotor, for purposes of triggering commutation of the motor stator windings 68 at appropriate times.

Abstract: The invention provides a blower system of a high performance, which is constructed to have stabilized characteristics, a high efficiency, a reduced thickness and a reduced noise. A blower system according to the invention includes an impeller, a motor for rotating the impeller and having a rotor and a stator, and a bell-mouth for supplying air to an intake port in the impeller, wherein the rotor is fixed to the impeller, and the stator is fixed to the bell-mouth. A gap between the impeller and the bell-mouth is composed of a gap between the rotor and the stator of the motor. Alternatively, the rotor is fixed to the impeller, and the stator is fixed to a fitting for mounting a housing of the blower system or the blower system.

Abstract: A fan has a housing with a wire-guiding slot. One of plural connecting members is taken as a line fixed portion having a linking end facing the wire-guiding slot, with the linking end connecting to a section of a peripheral wall of the housing and the section axially aligned with the wire-guiding slot of the housing. A base is coupled to the housing. A power line has one end connected with the connection port and the other end extended beyond the housing via the wire-guiding slot. An impeller is rotatably mounted inside of the housing. Therefore, the line fixed portion can be close to the wire-guiding slot. Thus, the power line can be extended straight through the wire-guiding slot. A distance between the connection port and the wire-guiding slot is shortened to enhance assembling convenience of the power line.

Abstract: An arrangement for dissipating heat from components producing high heat flux densities, such as computers, features a combination fan and fluid pump with a magnetic coupling (93) which acts across a fluid-tight partitioning can (52). The pump has a pump wheel (90) connected to a first permanent magnet (92), and an electronically commutated internal-rotor motor (ECM 70) to drive it. The motor has a stator (68) inside which is rotatably arranged a rotor (60) equipped with a second permanent magnet (64). Interaction between the first and second permanent magnets creates the magnetic coupling (93). The stator (68) of the internal-rotor motor (70) is arranged radially outside the magnetic coupling (93). A first shaft (54), arranged on the outer side of the can (52), serves for rotatable journaling of the rotor (60) of the internal-rotor motor (70) and a second shaft (50) inside the can serves for journaling the pump rotor.

Abstract: A motor arranged to rotate an impeller includes a rotor magnet fixed to a shaft, and a stator arranged opposite to the rotor magnet. The motor is arranged on an axially lower side of an impeller cup. The stator is fixed to an inner circumferential surface of a stator support portion. An opening-side end portion of the impeller cup is arranged opposite to an upper surface of the stator support portion. The upper surface of the stator support portion includes an expanded portion defined in a portion thereof which is opposed to the opening-side end portion of the impeller cup. The expanded portion is preferably located a greater distance from the opening-side end portion of the impeller cup than a distance between the opening-side end portion and a remaining portion of the upper surface of the stator support portion.

Abstract: A hermetic compressor (100) includes a closed casing (2), a compression mechanism (4), a motor (6), a discharge pipe (8), a first balance weight (18), a swirl flow generating portion (21), and a second balance weight (19). The motor (6) has a stator (14) and a rotor (15). A communication passage (20) is formed in the rotor (15) so as to introduce, into an upper space (7), a working fluid compressed in the compression mechanism (4) and discharged to a lower space (5) of the closed casing (2). A baffle plate (122) is provided as a discharge direction deflecting portion for causing the compressed working fluid to travel from the communication passage (20) to the upper space (7), while deflecting the working fluid in a direction inclined with respect to a direction parallel to a rotational axis O. The baffle plate (122) may be constituted by a part of the swirl flow generating portion (21).

Abstract: Disclosed herein are a motor and a fan using the same. The motor includes a chassis having a fillister, a stator assembly disposed at a central area of the chassis, a circuit element disposed in the fillister, a first resin material, and a second resin material. The first resin material is filled within the fillister and covers the circuit element. The second resin material covers a part of the stator assembly where is not joined with the chassis.

Abstract: A fan apparatus and an air conditioner employing such a fan apparatus are provided to reduce noise and enhance efficiency. The fan apparatus may be driven by a BLDC motor that stably drives the fan and increases an air flow rate. Heat exchange efficiency of an outdoor unit of a front suction/discharge type air conditioner may be improved by such a fan apparatus driven by such a BLDC motor.

Abstract: A motor-driven compressor includes an electric motor, a compression mechanism, which compresses gas by being driven by the electric motor, and a body accommodating the electric motor and the compression mechanism. The motor-driven compressor includes a motor control section, which drives the electric motor by controlling power supply to the electric motor, a vibration control section, which generates a waveform in a phase opposite to the waveform of vibration predicted to be generated in the body due to the driving of the electric motor, and a vibration applying device, which is located on the body and applies vibration in the opposite phase generated by the vibration control section to the body.