Class / Patent application number | Description | Number of patent applications / Date published |
310061000 | Rotor passage | 54 |
20080224552 | Outer Rotor of Motor for Direct Drive-Type Washing Machine - Objects of the present invention is to provide an outer rotor of a motor for a direct drive drum type washing machine, in which a structure of the outer rotor is improved, to resolve throbbing of the outer rotor at the time of high speed rotation, and consequential noise, and to provide a variety of products. | 09-18-2008 |
20080252156 | ROTATING ELECTRIC MACHINE AND ROTOR THEREOF - A rotor of a rotating electric machine includes a cylindrical rotor core, a plurality of coil slots provided on an outer periphery of the rotor core along a rotor axis direction, rotor coils disposed in the coil slots by laminating a plurality of field conductors through an insulation material, a rotor wedge disposed at an opening end portion of the coil slot so as to support the rotor coil, a coil ventilation duct formed in the coil slot so as to pass through the rotor coils, the rotor wedge and the insulation material, and sub-slots provided at bottom portions of the coil slots so as to be communicated with rotor core ends and the coil ventilation ducts. In such a rotor of a rotating electric machine, the coil slot, the sub-slots and the coil ventilation duct constitute a cooling gas channel for distributing a cooling gas to thereby cool the rotor coils. A depth in a diameter direction of each sub-slot from the rotor coil end to a nearest coil ventilation duct is larger than a depth of the sub-slot at a portion near a center of the rotor core. | 10-16-2008 |
20080272661 | Liquid cooled rotor assembly - A rotor assembly cooling system ( | 11-06-2008 |
20080309177 | GAS-COOLED ELECTRICAL DEVICE - The invention relates to a gas-cooled electrical device ( | 12-18-2008 |
20090058205 | ROTATING ELECTRIC MACHINE - A rotating electric machine wherein sub slots serving as cooling fluid ducts in the axial direction are provided at the bottoms of the coil slots formed in the rotor, radial cooling fluid ducts are formed through the field coil of the rotor in the radial direction of the rotor and juxtaposed in the axial direction of the rotor, so as to communicate the sub slots with the air gap, and radial cooling fluid ducts are formed through the stator in the radial direction of the stator and juxtaposed in the axial direction of the rotor, corresponding in position to the radial cooling fluid ducts in the rotor, so as to communicate the inner periphery of the stator with the outer periphery of the stator. | 03-05-2009 |
20090091200 | ROTOR WITH A THERMAL BARRIER AND A MOTOR WITH SUCH A ROTOR - The invention provides an electrical line-start motor comprising with a stator and a squirrel cage rotor adapted for rotation around a centre axis. The rotor comprises a squirrel cage winding in which a current is induced by corresponding windings of the stator, and a set of permanent magnets. To protect the magnets from excessive heat, the rotor comprises thermal barriers e.g. in the form of cavities located between the squirrel cage winding of the rotor and the magnets. Due to the thermal barriers, the thermal conductivity in a path between the windings and the magnets are reduced and the magnets are protected. | 04-09-2009 |
20090127944 | VENTILATED ROTOR OF A HIGH-POWER TURBOGENERATOR FOR THE PRODUCTION OF ELECTRICITY - A ventilated rotor of a high-power turbogenerator for the production of electricity has a shaft extending along an axis; a plurality of axial slots obtained in the shaft; a plurality of conductor bars arranged at least partly in the slots; a plurality of axial channels suitable for ventilating the conductor bars; a plurality of subslots, each of which is arranged below a slot to distribute a ventilating gas; a plurality of axial portions traveled over by respective flows of ventilating gas along each axial channel; and at least one radial channel, which is intended to convey directly the ventilating gas from the subslot to the outer surface of the rotor via the conductor bars and is arranged between two consecutive and adjacent axial portions of an axial channel. | 05-21-2009 |
20090212647 | FAN COOLING OF AN ELECTRIC ENGINE - An air cooling arrangement for an electric engine comprises a rotor, a stator disposed co-axially on the rotor, and a partition disposed between the rotor and the stator and extending along a complete axial length of the rotor and mounted on the rotor so as to be in co-rotational communication with the rotor, the partition providing a segregated cooling air flow so as to prevent a radial flow of cooling air from the rotor to the stator. The arrangement further comprises at least one fan configured to provide cooling air to the rotor and the stator, wherein the partition partitions and segregates the at least one fan and provides an inner fan and an outer fan and extends between the inner fan and the outer fan. | 08-27-2009 |
20090230790 | ELECTRICAL MACHINE WITH AN INTERNALLY COOLED ROTOR - The invention relates to an electrical machine with an internally cooled rotor. In order to improve the cooling power of such a machine without the use of a fan wheel fitted separately on the rotor, the invention proposes an electrical machine with a stator laminate stack and a rotor in a housing, which electrical machine has an internal cooling circuit comprising rotor cooling channels, which pass axially through the rotor and are arranged on two concentric circles, in which internal cooling circuit a gaseous coolant can be circulated, wherein fan vanes and a first means for guiding the coolant from the rotor cooling channels on one of the two concentric circles via a winding head to the rotor cooling channels on the other of the two concentric circles are provided in the case of the machine on a first rotor end side. As a result, particularly those regions are cooled optimally in which the dissipation of lost heat is problematic. | 09-17-2009 |
20090256435 | Device and Method to Clamp and Lock Permanent Magnets and Improve Cooling within a Rotating Electrical Machine - A device to hold at least one magnetic flux producing permanent magnet onto a surface of an electrical machine comprising at least one slot recessed from the surface and extending from one end of the surface; and at least one gripping bar inserted into an associated at least one slot having a protrusion extending past the surface to engage at least one magnet where at least one slot and at least one gripping bar are shaped to retain the at least one gripping bar within the associated at least one slot to hold the at least one engaged magnet onto the surface. | 10-15-2009 |
20090273246 | ELECTRICAL MACHINE - The invention relates to an electrical machine ( | 11-05-2009 |
20090295239 | HEAT TRANSFER ENHANCEMENT OF VENTILATION CHIMNEYS FOR DYNAMOELECTRIC MACHINE ROTORS - A cooling gas ventilation chimney is provided for an end region of a dynamoelectric machine having a rotor. A plurality of radial slots are provided in the rotor, and a plurality of coils are seated in the radial slots. The coils form radially stacked turns. The ventilation chimney includes one or more chimney slots that are defined in at least a portion of the radially stacked turns. The chimney slots extend in a substantially radial direction to the rotor, and at least a portion of a surface of the chimney slots is turbulated so as to have a roughened surface profile for enhanced heat transfer. | 12-03-2009 |
20100019591 | HEAT TRANSFER ENHANCEMENT OF VENTILATION CHIMNEYS FOR DYNAMOELECTRIC MACHINE ROTORS - A cooling gas ventilation chimney is provided for enhancing the heat transfer of an end region of a dynamoelectric machine. The dynamoelectric machine includes a rotor having a plurality of radial slots. A plurality of coils are seated in the radial slots, and the coils form a plurality of radially stacked turns. The ventilation chimney includes one or more chimney slots defined in at least a portion of the radially stacked turns. The chimney slots extend in a substantially radial direction to the rotor, and some of the chimney slots have an axial or circumferential length different from other chimney slots. | 01-28-2010 |
20100072838 | COIL SUPPORT FOR ROTATING ELECTRICAL MACHINE - Disclosed is a coil support for an electrical machine including a shank having a first outer diameter configured to support a field coil of the electrical machine and a base located at one end of the shank. The base has a second outer diameter greater than the first outer diameter and includes a plurality of recesses configured to increase a cooling flow through the electrical machine. Further disclosed is an electrical machine including the coil support and a method for cooling an electrical machine. | 03-25-2010 |
20100096937 | HEAT TRANSFER ENHANCEMENT OF DYNAMOELECTRIC MACHINE ROTORS - A rotor is provided for a dynamoelectric machine having one or more windings. The windings have one or more turns, and the turns have one or more outlet ducts that are located near a chimney. When the outlet ducts are stacked one on top of another, they form substantially radially oriented passages. The heat transfer performance of a portion of the rotor can be improved by locating two or more circumferentially spaced radial ducts near the chimney. A chimney can also be formed of one or more chimney slots defined in at least a portion of the turns, where one or more chimney slots extend in a substantially slanted direction to a radial direction of the rotor. A transition region of the rotor can also include one or more diagonal flow channels, which discharge into one or more chimneys. | 04-22-2010 |
20100109455 | AUTOMOTIVE ELECTRIC MACHINE - An automotive electric machine provided with: a stator; a rotor, which is rotationally mounted coaxially to the stator and inside the stator to rotate about a rotation axis; a shaft, which is rotationally mounted about the rotation axis, supports the rotor, and is hollow inside so as to have a longitudinal, central cooling channel filled with a cooling fluid; at least one pushing element, which is arranged inside the cooling channel, is integral with the shaft to rotate with the shaft itself about the rotation axis, and is helical-shaped to define at least one worm which extends within the cooling channel along the rotation axis to push the cooling fluid along the rotation axis due to its rotation. | 05-06-2010 |
20100127584 | CLAMP AND LOCK PERMANENT MAGNETS WITHIN A ROTATING ELECTRICAL MACHINE USING PITCHED FOCUSED FLUX MAGNETS - Permanent magnets are mounted within an electrical machine in a pitched saw-tooth pattern around the rotor shaft. This focused flux configuration provides for improved magnet mounting strength without resort to bonding or taping; provides improved rotor and stator cooling by access to the axial generator air flow; and provides for a simpler and more easily manufactured design. A laminated version of this basic structure provides for reduced surface losses and self-heating. | 05-27-2010 |
20100176670 | Machine cooling scheme - A motor, generator, or other machine with an improved rotor and stator structure providing radial slots in the rotor and stator can create an improved cooling scheme, or airflow pattern. Such a cooling scheme can be adapted for both totally enclosed and open drip proof motors, generators, and other machines easily, such that the two types of machines may share manufacturing facilities. The improved airflow pattern can provide for a cooling material to first flow in an axial direction along the axis of the rotor, then in a radial direction from the center of the machine outward, then again in an axial direction, and finally in a radial direction. At the end of the airflow pattern, in totally enclosed machines, the cooling material may flow radially inwards and begin the cycle again, whereas in open drip proof machines, the cooling material may flow radially outward again and exit the machine. | 07-15-2010 |
20100194220 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a rotation shaft arranged rotatably, a rotor having a storing hole capable of storing a permanent magnet, including the permanent magnet stored in the storing hole, and being fixed to the rotation shaft, a stator facing the rotor and including a coil, an end plate provided at an axial end of the rotor, a coolant passage formed in the end plate and running along an axial end of the permanent magnet for allowing a coolant to flow, and a discharge hole located at a radially inner side of the rotor with respect to a cooling target region including the permanent magnet and being located at an outer circumferential side of the rotor from a radially inner end of the permanent magnet, the discharge hole communicating with the coolant passage and being capable of discharging the coolant. | 08-05-2010 |
20100194221 | PERMANENT MAGNET ELECTRICAL ROTATING MACHINE, WIND POWER GENERATING SYSTEM, AND A METHOD OF MAGNETIZING A PERMANENT MAGNET - A permanent magnet electrical rotating machine having a permanent magnet rotor and a stator, wherein: | 08-05-2010 |
20100231066 | ELECTRICAL MACHINE WITH PERMANENT MAGNETS - Electrical machine ( | 09-16-2010 |
20100231067 | ELECTRIC MOTOR HAVING FLUID CIRCULATION SYSTEM AND METHODS FOR COOLING AN ELECTRIC MOTOR - An electric motor having a housing, a stator mounted in the housing, and a rotor mounted in the housing for rotation relative to the stator about a central axis. The rotor has opposite ends and a plurality of fluid flow passages extending through the rotor between the ends. An electro-magnetic drive system is operatively connected to the rotor for driving rotation of the rotor relative to the stator. A fluid circulation system is in fluid communication with the fluid flow passages for providing fluid flow from the first end of the rotor to the second end of the rotor through at least one of the fluid flow passages and fluid flow from the second end of the rotor to the first end of the rotor through at least one other of the fluid flow passages. The rotor and components of the fluid circulation can be assembled to make a rotor assembly. | 09-16-2010 |
20100237724 | DYNAMOELECTRIC MACHINE COIL SPACERBLOCK HAVING FLOW DEFLECTING CHANNEL IN COIL FACING SURFACE THEREOF - A dynamoelectric machine includes a rotor having a plurality of adjacent coils; a spaceblock disposed between adjacent coils so as to define first and second cavities adjacent the spaceblock and between mutually adjacent coils; and the spaceblock includes a channel disposed in a coil facing surface of the spaceblock for intercepting and redirecting a circulating coolant flow to the first cavity. | 09-23-2010 |
20100237725 | ROTATING ELECTRIC MACHINE AND DRIVE DEVICE - There is provided a rotating electric machine capable of preventing a coolant from being retained at an outer surface of a rotor. This rotating electric machine includes a rotation shaft provided so as to be rotatable, a core body secured to the rotation shaft, a permanent magnet embedded in the core body, and an end plate provided so as to be opposed to an axial end surface of the core body. A first coolant channel is formed in the rotation shaft to allow a coolant to flow therethrough. A second coolant channel is formed between the end plate and the axial end surface of the core body to communicate with the first coolant channel. A partition wall that partitions the second coolant channel in a circumferential direction and a path wall that guides the coolant in the second coolant channel toward an outer peripheral edge region of the axial end surface where the permanent magnet is placed are formed inside the second coolant channel. | 09-23-2010 |
20100270876 | DYNAMOELECTRIC MACHINE ROTORS HAVING ENHANCED HEAT TRANSFER AND METHOD THEREFOR - A radial duct for a dynamoelectric machine having a rotor, and a plurality of radial slots in the rotor is provided. A plurality of coils are respectively seated in the radial slots, and the coils form a plurality of radially stacked turns. The radial duct includes one or more cooling slots defined in at least a portion of the radially stacked turns, and extend in a substantially radial direction to the rotor. At least a portion of an interior surface of one or more cooling slots includes one or more ribs for enhanced heat transfer. | 10-28-2010 |
20100277017 | DOVETAIL SPOKE INTERNAL PERMANENT MAGNET MACHINE - An internal permanent magnet (IPM) machine is provided. The IPM machine includes a stator assembly and a stator core. The stator core also includes multiple stator teeth. The stator assembly is further configured with stator windings to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity. The IPM machine also includes a rotor assembly and a rotor core. The rotor core is disposed inside the includes a shaft. The shaft further includes multiple protrusions alternately arranged relative to multiple bottom structures provided on the shaft. The rotor assembly also includes multiple stacks of laminations disposed on the protrusions and dovetailed circumferentially around the shaft. The rotor assembly further includes multiple pair of permanent magnets for generating a magnetic field, which magnetic field interacts with the stator magnetic field to produce a torque. The multiple pair of permanent magnets are disposed between the stacks. The rotor assembly also includes multiple middle wedges mounted between each pair of the multiple permanent magnets. | 11-04-2010 |
20100283335 | GENERATOR COIL COOLING BAFFLES - Systems are disclosed that assist in cooling generator rotor coils. In one embodiment, the system includes a stator; a rotor positioned within the stator, the rotor having: a spindle; groups of coils disposed about the spindle, each of the groups of coils including a plurality of ducts; a plurality of subslots disposed about the spindle, each of the plurality of subslots extending between the spindle and one of the groups of coils, wherein each of the plurality of subslots is in fluid communication with the one of the groups of coils; and a first baffle disposed in one of the plurality of subslots for directing a coolant into at least one of the plurality of ducts. | 11-11-2010 |
20110018373 | Brushless DC Motor and a Radiator Thereof - A brushless DC motor ( | 01-27-2011 |
20110025146 | Dual Armature Motor/Generator With Flux Linkage - The present invention relates to cylindrical rotating electric machines which comprise armature and field coils, with either the field coil or the dual armature being the rotating component. The dual armature is composed of two concentric cylindrical sets of coils with the field coil situated in the gap between the inner and outer armature sections. Relative rotational motion between the field and armature coils can be achieved by having either one be the rotor. By using two armature coil sections, one inside the field coil aperture and the other external to the field coil, the flux linkage between the armature and superconducting field coil can be approximately doubled. This is a more efficient use of the superconductor. The increased flux linkage in the invented technology produces a substantially higher power density than can be obtained with current conventional superconducting machine technology. | 02-03-2011 |
20110057522 | HYBRID DRIVE TRAIN AND ELECTRICAL MACHINE - The present invention relates to a hybrid drive train for a motor vehicle, comprising a clutch arrangement having a first rotatable clutch part and a second rotatable clutch part, which clutch parts can be separated from one another and which can be connected to one another, and comprising an electrical machine which is arranged concentrically with respect to the first clutch part and has a rotor, wherein the rotor is connected with the first clutch part and comprises a plurality of magnetic flux influencing portions, the magnetic flux influencing portions being arranged distributed over the circumference of the rotor with a predetermined rotor pitch. Here, the first clutch part comprises a shaft toothing that is adapted to the rotor pitch. | 03-10-2011 |
20110127861 | MOTOR OF WASHING MACHINE - The present invention relates to a motor for a washing machine for enhancing rigidity of a rotor frame, easy verification and adjustment of a gap, and improving a cooling performance of the motor. | 06-02-2011 |
20110127862 | ELECTRIC MACHINE HAVING RADIAL DIVIDERS FOR GUIDING COOLING AIR - A rotor shaft ( | 06-02-2011 |
20110298319 | Electric Machine Cooling System and Method - Embodiments of the invention provide an electric machine module including a housing defining a machine cavity. In some embodiments, an electric machine can be positioned within the machine cavity and include a rotor hub coupled to rotor laminations. The rotor hub can include first and second axial ends and the rotor laminations can include a recess. In some embodiments, the recesses can be aligned to define a portion of a plurality of coolant channels that can be in fluid communication with the machine cavity. In some embodiments, the rotor hub can include first and second rotor hub inlets in fluid communication with at least a portion of the coolant channels. The first and the second rotor hub inlets can be adjacent to the axial ends of the rotor hub. In some embodiments, the coolant channels are in fluid communication with the rotor hub inlets are not the same coolant channels. | 12-08-2011 |
20120086291 | VENTILATED ROTOR AND STATOR FOR DYNAMOELECTRIC MACHINE - A laminated rotor and stator are provided for a dynamoelectric machine. The rotor includes at least one end flange having a plurality of cooling apertures and at least one rotor inner vent lamination having a plurality of cooling apertures. At least one rotor outer vent lamination has a plurality of cooling apertures in communication with a first plurality of radially oriented ventilating slots. The end flange, rotor inner vent lamination and rotor outer vent lamination are configured together into a rotor lamination stack, and the plurality of cooling apertures form a generally axial cooling passage for a flow of a cooling medium. | 04-12-2012 |
20120212087 | BLDC MOTOR FOR A HAIRDRYER - Provided is a BLDC motor for a hair dryer, which includes high strength plastic parts integrated through injection molding. Thus, the number of parts is decreased to thereby decrease manufacturing costs and the weight of the BLDC motor. Furthermore, a sirocco fan installed in the BLDC motor is directly coupled to an outer circumferential surface of a rotor housing so as to optimize an assembling structure of the sirocco fan, thereby stabilizing the rotation thereof. Accordingly, vibration and noise due to rotation can be reduced, and an amount of introduced air can be maximized. To this end, the BLDC motor includes a rotor housing including permanent magnets on an inner surface thereof, and a shaft hole in a central portion thereof to receive a shaft, wherein a sirocco fan for blowing air is coupled to an outer portion of the rotor housing, a rotor frame coupling the shaft to the rotor housing to integrally rotate them, a stator core around which a coil is wound to interact with a magnetic field formed on the permanent magnets, thereby generating torque, a PCB coupled to a lower portion of the stator core by a screw, a base bracket including a support protrusion on an upper outer portion thereof to support the stator core, and a bearing housing coupled to an upper portion of the base bracket to support a ball bearing, and including a removal prevention protrusion in a lower outer portion thereof to prevent removal of the stator core. | 08-23-2012 |
20120223602 | ELECTRIC MOTOR CAPABLE OF HEAT DISSIPATION - An electric motor includes a motor housing configured with an inner receiving space, and including a surrounding wall formed with an air inlet, and an end wall formed with air outlets. The air inlet and the air outlets are in spatial communication with the inner receiving space. A rotor unit is disposed rotatably in the inner receiving space, and includes a rotor shaft extending along a pivot axis and rotatable relative to the motor housing about the pivot axis, and a rotor sleeved fixedly on the rotor shaft. A stator unit is mounted fixedly in the motor housing, and is disposed spacedly around the rotor. The rotor has an annular outer surface formed with an air groove that extends from a first end of the rotor to a second end of the rotor opposite to the first end in the pivot axis. | 09-06-2012 |
20120248906 | ROTOR ASSEMBLY WITH COOLING MECHANISM - A rotor assembly with a cooling mechanism having first and second channels is provided. The rotor assembly includes a shaft having a hollow portion and a rotor core having at least one rotor stack positioned at least partially around the shaft. The rotor core has a first end and a second end. The rotor stack forms an interior cavity which is only partially filled with a permanent magnet so as to define a gap in the rotor stack. The first channel is configured to direct fluid flow in a generally radial direction from the hollow portion of the shaft. The second channel is at least partially defined by the gap in the interior cavity of the rotor stack and is configured to direct the fluid flow from the first channel to at least one of the first and second ends of the rotor core. | 10-04-2012 |
20120248907 | CENTRIFUGAL HEAT DISSIPATION DEVICE AND MOTOR USING SAME - A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance. | 10-04-2012 |
20120256504 | ELECTRIC MOTOR HAVING FLUID CIRCULATION SYSTEM AND METHODS FOR COOLING AN ELECTRIC MOTOR - An electric motor having a housing, a stator mounted in the housing, and a rotor mounted in the housing for rotation relative to the stator about a central axis. A plurality of fluid flow passages extend through the rotor between opposite ends. An electro-magnetic drive system is adapted for driving rotation of the rotor relative to the stator. A fluid circulation system is in fluid communication with the fluid flow passages for providing fluid flow from the first end of the rotor to the second end of the rotor through at least one of the fluid flow passages and fluid flow from the second end of the rotor to the first end of the rotor through at least one other of the fluid flow passages. The rotor and components of the fluid circulation system can be assembled to make a rotor assembly | 10-11-2012 |
20120299404 | ROTOR FOR ROTATING ELECTRIC MACHINE - In a rotor for the dynamo, the interior circumference face of a rotor core main body makes contact in a thermally transmissible manner with a rotor axle, and the rotor axle includes a cooling medium circulation space. The rotor is provided with a cooling medium supply member, which supplies the cooling medium to the cooling medium circulation space. The cooling medium supply member is provided with a cooling medium supply path that extends in the rotor axle direction, and cooling medium supply holes that extend externally in the direction of the rotor diameter. The cooling medium supply holes are provided with supply apertures that open toward the cooling interior circumference face. The rotor axle is provided with cooling medium discharge holes that extend externally in the direction of the rotor diameter. The cooling medium discharge holes are provided with discharge apertures that open externally in the diameter direction. | 11-29-2012 |
20130062976 | MACHINES AND METHODS AND ASSEMBLY FOR SAME - An operating device for a machine includes a shaft having a channel extending through the shaft and includes a fluid mover coupled to the shaft. The fluid mover is in flow communication with the channel to channel a fluid through the channel to facilitate treating the shaft with the fluid. | 03-14-2013 |
20130062977 | COOLING STRUCTURE OF GENERATOR MOTOR AND GENERATOR MOTOR - A cooling structure of a generator motor includes: a rotor holder; a rotor core; a first blade; and a second blade, wherein the second blade includes a recessed coolant holding portion, provided on an outer circumference of the second blade on an opposite side to the rotor core and opening inward in the radial direction, for collecting a coolant, and a drain hole radially penetrating an outer circumference of the coolant holding portion for draining the coolant collected in the coolant holding portion. | 03-14-2013 |
20130154408 | GENERATOR MOTOR COOLING STRUCTURE AND GENERATOR MOTOR - A generator motor cooling structure for cooling a generator motor, which includes a housing storing an input/output shaft to which a rotor is attached and a stator disposed at an outer periphery portion of the rotor, by a cooling medium, includes: a protrusion portion that protrudes toward the rotor from a surface at a side of the housing of an end side member disposed at one end portion of the housing in a direction of a central rotation axis of the input/output shaft, wherein the protrusion portion is provided on an inner side of a coil of the stator in a radial direction, on an outer side of a bearing attached to the input/output shaft in the radial direction, in at least a partial region on a periphery of the central rotation axis. | 06-20-2013 |
20130187493 | Rotor for a Dynamoelectric Machine - The invention relates to a rotor for a dynamoelectric machine, having the following features:
| 07-25-2013 |
20130307358 | LAMINATED ROTOR STRUCTURE FOR A PERMANENT MAGNET SYNCHRONOUS MACHINE - The invention relates to a laminated rotor structure for a permanent magnet synchronous machine wherein disks ( | 11-21-2013 |
20140042842 | Axial Gap Rotating-Electric Machine - A channel connecting a first opening formed on one side surface of a rotor and a second opening formed on the other side surface of the rotor is provided, and a first distance from a rotating shaft to the center of the first opening and a second distance from the rotating shaft to the center of the second opening are differentiated. A differential pressure is generated between the first opening and the second opening provided in the rotor by the differentiating the distances from the center of the rotating shaft to the first opening and the second opening, a flow of air is generated by the differential pressure from one surface or the other surface of the rotor to the other surface or the one surface, whereby the stator in proximity to the rotor may be cooled. | 02-13-2014 |
20140232221 | Centrifugal Heat Dissipation Device and Motor Using Same - A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance. | 08-21-2014 |
20150015099 | MOTOR - A motor includes: a shaft to which a rotor is attached and having an internal cooling medium passage in an inside of the shaft, a cooling medium passing through the internal cooling medium passage; a housing including the shaft disposed therein and configured to rotatably support the shaft; and a cooling medium reservoir provided in the housing and provided on an upstream side of an inlet of the internal cooling medium passage in a flowing direction of the cooling medium, the cooling medium reservoir being configured to store the cooling medium and then flow the cooling medium to the internal cooling medium passage. | 01-15-2015 |
20150084456 | ELECTRIC MOTOR - An electric motor includes a stator operable to produce a magnetic field and defining an opening, and a rotor at least partially disposed within the opening. The rotor includes a shaft extending along a rotational axis, a plurality of first core portions each including a plurality of laminations stacked contiguously on the shaft, and a second core portion coupled between each of the first core portions. The first core portions and the second core portion cooperating to define a rotor magnetic core. A plurality of windings is coupled to the rotor magnetic core, and an air flow path is partially defined by the first core portions, the second core portion, and the shaft. The air flow path includes an axial portion that passes through the shaft axially along the rotational axis and a radial portion that extends radially outward through the second core portion. | 03-26-2015 |
20150333599 | ELECTRIC MACHINE - The invention relates to an electric machine ( | 11-19-2015 |
20150340930 | Ceiling Fan Motor - A ceiling fan motor includes a stator assembly and a rotor. The stator assembly includes an iron core. The rotor is rotatably coupled with the stator assembly and includes a housing, a first positioning member and at least one permanent magnet. The housing includes a lateral wall. The lateral wall is enclosed to form an inner space adapted to receive the iron core. The first positioning member is coupled with the lateral wall. The at least one permanent magnet is positioned by the first positioning member. The first positioning member includes a plurality of air-guiding blades. | 11-26-2015 |
20160126791 | ROTATING ELECTRIC MACHINE - A rotating electric machine including a rotator including a small-angle rotator portion and a large-angle rotator portion respectively having different inter-magnet end angles, each being a plane angle formed between a line connecting one outermost peripheral-side end of a permanent magnet and an axial center of the rotator and a line connecting an outermost peripheral-side end of another permanent magnet and the axial center of the rotator. The rotator includes three layers of the small-angle rotator portion, the large-angle rotator portion, and the small-angle rotator portion, which are laminated in the stated order along an axial line of the rotator. Therefore, demagnetization due to a temperature rise of the permanent magnets is suppressed. In addition, a temperature distribution in the permanent magnets in the axial direction of the rotator is reduced. | 05-05-2016 |
20160380513 | Systems and Methods for Improved Heat Transfer from Rotor Coils - Systems and methods according to various embodiments direct air flow to rotor coils. This cooling air increases heat transfer from the coils to improve the thermal performance of the rotor. | 12-29-2016 |
20220140680 | ROTARY ELECTRIC MACHINE WITH ADHESIVE-REINFORCED ROTOR - An adhesive-reinforced rotor for a rotary electric machine includes rotor lamination layers (“rotor lams”) having axial inner surfaces collectively defining rotor openings through the rotor lams. The rotor also includes reinforcement blocks disposed within a respective one of the rotor openings. A polymer primer/adhesive layer of the rotor having a bond line thickness of less than 1 mm is disposed between the one or more reinforcement blocks and the axial inner surfaces of the rotor lams. The reinforcement blocks and the primer/adhesive layer each have a tensile strength of at least 50 MPa. A modulus of elasticity of the reinforcement blocks is at least three times greater than that of the materials of the polymer primer/adhesive layer. A method of constructing an adhesive-reinforced rotor is also described herein. | 05-05-2022 |