Class / Patent application number | Description | Number of patent applications / Date published |
310063000 | Pressure pump or fan | 44 |
20080265699 | PERMANENT MAGNET GENERATOR WITH AN INTEGRAL COOLING SYSTEM AND INTERGRAL VOLTAGE REGULATION - A cooling system and voltage regulator for a sealed permanent magnet generator is disclosed that has a rotor shaft that is hollow. A magnet is moveably positioned within said hollow rotor shaft. Permanent magnets mount on the exterior of the hollow rotor shaft. The rotor shaft has a pressed aluminum tube in various configuration on the inside bore with an end-mounted fan. The aluminum tube acts as a heat sink to draw the heat generated by the magnets through the rotor shaft and aluminum tube. The fan draws cooling air through the hollow bore of the rotor shaft thus cooling the magnets and forces the heated air through passages on the exterior of the stator housing. Because the airflow is not in contact with the electrical portions of the generator the cooling system will perform in dusty, wet and explosive environments. In another configuration a refrigeration compressor installed in the rotor shaft bore cools the rotor shaft and the fan cools the stator passages. Movement of the magnet within the rotor shaft regulates voltage. | 10-30-2008 |
20090127945 | AUTOMOTIVE ELECTRIC MOTOR-GENERATOR - The present invention provides an automotive electric motor-generator that can achieve sufficient cooling of a radiating plate by ensuring a sufficient cooling airflow ventilation channel within limited axial or radial dimensions. | 05-21-2009 |
20090152964 | Method and Structure for Cooling an Electric Motor - A high speed electric motor for use in a variety of applications. The electric motor an electric motor including a motor housing or stator, a rotor having a commutator and brushes for contacting the commutator at a predefined area known as the contact area. Additionally, the motor includes a forced air cooling assembly. The forced air cooling assembly includes a centrifugal fan for creating air flow, a manifold for accelerating the air flow. The manifold having exit ports and the exit ports being positioned directly over the contact area for directing the accelerated air flow at the contact area and the motor housing having at least one opening aligned with the contact area and at least a second opening defining an exit vent. Additionally, a method of cooling the motor in accordance with the invention is also disclosed. | 06-18-2009 |
20090309435 | Integrated Air Mover and Angular Position Sensor on Electric Motor - Embodiments of the present invention provide an integrated air-mover and position sensor for an electric motor. One or more fins may be attached to a position sensor and adapted to generate a movement of air when the position sensor rotates with a rotor shaft. Such an arrangement not only allows the position sensor to sense positions of the electric motor, but also provides air-cooling functions for cooling the motor driver efficiently, thus improving product reliability. The position sensor may be an optical encoder or a capacitive sensor. Alternatively, one or more fins may be disposed within the electric motor and attached directly onto a rotor shaft of the electric motor to create a movement of air for cooling the motor driver directly and efficiently. | 12-17-2009 |
20100033041 | COUNTER-ROTATING AXIAL-FLOW FAN - A counter-rotating axial-flow fan is provided that is capable of increasing effect of cooling a stator. One or more through-holes | 02-11-2010 |
20100102655 | Arrangement for cooling of an electrical machine - An arrangement for cooling an electrical machine is provided. The electrical machine includes a rotor and a stator, an air-gap being between the rotor and the stator. The stator includes a plurality of stacked laminate-plates. The laminate-plates include on a first side, which is facing the air-gap, a plurality of slots containing metal-windings of a stator-coil. The laminate-plates are positioned and fixed by a structural support and by end-plates in relation to a central-part of the stator. A joint cavity is formed by the end-plates, the central-part of the stator and an internal surface of the laminate-plates. The internal surface is defined by a second side of the laminate-plates, the second side being opposite to the first side. The cavity is coupled with an air-cooling-arrangement, which is arranged and used to circulate a cooling gaseous medium from the cavity to the air-gap and the laminate-plates back into the cavity. | 04-29-2010 |
20100148602 | OIL RETAINER COOLING ASSEMBLY FOR AN ELECTRIC MOTOR - An electric motor having an oil retainer cooling assembly fixed onto the motor shaft between the rotor assembly and support bearing within the motor housing. The retainer cooling assembly is a single piece unit used to retain oil in the support bearing and to induce air flow within the housing to internally cool the electric motor. The oil retainer cooling assembly includes a hub that has a bore for the insertion and attachment of the hub to the motor shaft, a surface in sealing contact with the bearing assembly, a plurality of fan blades protruding radially from the hub, and a shoulder between the hub surface and the fan blades. The oil retainer assembly rotates with the shaft during normal operating conditions, whereby the blades induces air flow within the housing to cool the electric motor and the hub surface maintains sealing contact with bearing assembly to retain oil within the bearing. | 06-17-2010 |
20100289350 | COOLING MECHANISM FOR AXIAL GAP TYPE ROTATING MACHINES - A stator has a mechanism for effectively dissipating internally generated heat, and is for use in a high power axial gap type rotating machine. The stator comprises a coil holding member and a coil secured to the coil holding member, in which the coil holding member comprises a material having a thermal conductivity of not less than 5 W/mK that is measured compliant with the ASTM E1530 and having an electrical conductivity of not more than 1×10 | 11-18-2010 |
20110006623 | DEVICE FOR SEALING A COMPONENT HOUSING IN A MOTOR-VEHICLE DRIVE TRAIN - A component housing in a motor-vehicle drive train is sealed by pressurization of the housing interior. The component is a hybrid module ( | 01-13-2011 |
20110025147 | Motor Assembly with a Thermally Conductive Bridging Member - A motor assembly includes a housing, a revolving shaft revolvably mounted in the housing, a magnet mounting portion surrounding and rotatable with the revolving shaft, a magnet disposed on the magnet mounting portion, a magnetically inducible core having a plurality of stator poles spaced apart from rotor magnetic poles of the magnet, and a plurality of stator windings wound on the stator poles, respectively. The stator windings are spaced apart from end walls of the housing by axial intervals. A thermally conductive bridging member is disposed to span the axial intervals to conduct heat emanating from the stator windings to the end walls so as to dissipate heat out of the housing. | 02-03-2011 |
20110169355 | INDUCTION MOTOR - Exemplary embodiments of the present invention relate to an induction motor including a stator having a circular cross-section and an inner passage having a longitudinal axis defining a bore, a solid core steel rotor having a circular cross-section rotatably disposed within the bore of the stator, and an air gap disposed between the rotor and the stator. A copper conductive layer is disposed on the steel rotor to increase the electrical conductance of the rotor. Exemplary embodiments adhere the copper conductive layer to the steel rotor using Hot Isostatic Pressing (HIP). The HIP process encloses the steel rotor and the copper conductive layer in a containment vessel, and adheres the conductive layer to the rotor by applying high temperature and high gas pressure to the outside of the containment vessel. | 07-14-2011 |
20110227432 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes a flange provided at one end of a substantially rectangular, hollow frame in an axial direction; a lid provided at the other end of the frame in the axial direction; a rotor including a shaft, the shaft being rotatably supported by the flange and the lid; a stator fixed to an inner section of the frame, the stator surrounding the rotor; and a plurality of fans provided on opposite side surfaces of the frame in a plan view of the frame as viewed in the axial direction. | 09-22-2011 |
20110227433 | ELECTRICAL MOTOR APPARATUS HAVING IMPROVED COOLING SYSTEM - An electric motor apparatus having an improved cooling system comprising a first compartment housing an electric motor mounted on a rotating shaft, a second compartment housing an electric circuit adapted to connect said electric motor to a power supply source, and a cooling system adapted to dissipate the heat generated by said electric motor apparatus. The cooling system comprises a fan mounted on said rotating shaft in a position adjacent to said second compartment and on the opposite side with respect to said first compartment and at least one finned heat exchanger adapted to dissipate the heat generated by said electric circuit inside said second compartment. | 09-22-2011 |
20110260561 | INDUCTION MOTOR - Exemplary embodiments of the present invention relate to an induction motor including a stator having a circular cross-section and an inner passage having a longitudinal axis defining a bore, a solid core steel rotor having a circular cross-section rotatably disposed within the bore of the stator, and an air gap disposed between the rotor and the stator. A copper conductive layer is disposed on the steel rotor to increase the electrical conductance of the rotor. Exemplary embodiments adhere the copper conductive layer to the steel rotor using Hot Isostatic Pressing (HIP). The HIP process encloses the steel rotor and the copper conductive layer in a containment vessel, and adheres the conductive layer to the rotor by applying high temperature and high gas pressure to the outside of the containment vessel. | 10-27-2011 |
20110273042 | AUTOMOTIVE CONTROLLING APPARATUS-INTEGRATED DYNAMOELECTRIC MACHINE - A controlling apparatus-integrated dynamoelectric machine Includes: a metal housing that includes a front bracket and a rear bracket; a rotor that is rotatably disposed inside the housing by being fixed to a shaft that is rotatably supported by the front bracket and the rear bracket; a stator that includes: a cylindrical stator core that is disposed so as to be held between the front bracket and the rear bracket so as to surround the rotor; and a stator winding that is mounted to the stator core; and a controlling apparatus that includes: a direct-current alternating-current power interconverting circuit portion that passes electric current to the stator winding; and a controlling circuit portion that controls the direct-current alternating-current power interconverting circuit portion, the controlling apparatus being disposed inside the rear bracket. | 11-10-2011 |
20110278970 | ELECTRIC MOTOR - An electric motor has a stator and a rotor rotatably mounted in the stator. The stator includes a stator core and stator windings. A heat dissipating device is mounted around an outer surface of the stator core and configured to absorb heat there from. The heat dissipating device includes a base mounted around the stator core and a plurality of fins extending outwardly from the base in the radial direction. Electronic components are mounted on the heat dissipating device. A fan is mounted on a shaft of the rotor for generating a flow of air inside the stator and through slots between the fins to thereby cool the rotor, stator core, stator windings and electronic components. | 11-17-2011 |
20110304230 | Fan, electric motor, and machine tool - A fan having an air guide and a flywheel is provided, the flywheel being attached to a shaft, for cooling an electric motor. The electric motor has a rotor which can be attached to the shaft. The air guide is arranged in an interchangeable manner at a position between the flywheel and the rotor with respect to the axial direction, and has an air guide opening with an inner cross section for the purpose of forming a blowing channel. An air flow generated by the flywheel can be guided through the blowing channel in the axial direction. The inner cross section is smaller than an outer cross section of the rotor. | 12-15-2011 |
20120013208 | Motor for Vehicle - A motor for a vehicle is installed in a railway train and has a fan that is mounted on a rotor shaft and that causes the outside air into the motor. The motor for a vehicle includes a stopper that is fixed in between a bearing, which supports the rotor shaft, and the fan, which is inserted from that side of the rotor shaft at which the bearing lies. The stopper is configured to fit with the fan. The fan has a linear expansion coefficient set to be greater than linear expansion coefficients of the rotor shaft and the stopper. The fan is configured to be fittable with the stopper using bolts that are inserted from outside toward the stopper. | 01-19-2012 |
20120112576 | INVERTER FOR AN ELECTRIC MACHINE - An electric machine system including an alternating current (AC) electric machine having a machine housing, and a plurality of switch members arranged within a switch housing. The plurality of switch members are electrically connected to the AC electric machine. A direct current (DC) power source is electrically connected to the plurality of switch members. The DC power source generates a DC current. A controller is arranged within a control housing that is remote from the switch housing. The controller is electrically connected to the plurality of switch members and is configured and disposed to selectively activate select ones of the plurality of switch members in order to convert the DC current between the DC power source and an alternating current (AC) to operate the AC electric machine. | 05-10-2012 |
20120112577 | ELEVATOR MACHINE WITH EXTERNAL ROTOR AND MOTOR WITHIN TRACTION SHEAVE - A drive machine ( | 05-10-2012 |
20120175978 | AIR-COOLED ELECTRICAL MACHINE - The disclosure relates to an air-cooled electromechanical system having a rotor, a driver element, and a fan impeller, the rotor comprising a rotor shaft and field winding. Said disclosure proposes that the fan impeller is rotatably mounted on the rotor shaft and can be connected to and/or disconnected from the rotor and/or the rotor shaft by an automatic clutch. | 07-12-2012 |
20120280583 | DYNAMOELECTRIC MACHINE PRESSURIZING APPARATUS - A dynamoelectric machine pressurization apparatus is disclosed. In one embodiment, the apparatus includes a dynamoelectric machine air shield including a channel configured to fluidly connect an outlet of a rotor fan with an ambient air source. | 11-08-2012 |
20120286599 | GENERATOR WITH INTEGRATED BLOWER - An air-cooled generator may be provided with a centrifugal blower configured for rotation on a shaft of the generator. The centrifugal blower may have an axially oriented outlet. An impeller of the blower may have blades with trailing edges oriented at an angle between 80° to about 90° relative to an axis of the shaft of the generator. | 11-15-2012 |
20120286600 | INDUCTION MACHINE POWER CONNECTION BOX INCLUDING POWER SUPPLY FOR AUXILIARY DEVICES INCLUDING AUXILIARY COOLING FANS - An alternating current (AC) induction machine, such as a medium voltage induction motor, includes an auxiliary electrical connection box that is incorporated in the terminal box or within separate auxiliary electrical connection boxes that, are coupled to the machine's incoming power source. The box includes power conversion transformers or bridges that respectively convert the incoming AC power to other AC voltages or direct current (DC) useful for operating auxiliary devices proximal the machine. The connection box avoids the need to run separate power lines to induction machines necessary for operating auxiliary devices. Exemplary auxiliary devices include external auxiliary AC powered cooling fans for medium voltage AC motors. The auxiliary connection box may reconfigurable in the field and/or be pre-configured to provide one or more common auxiliary device output power sources. | 11-15-2012 |
20120299407 | INVERTER-INTEGRATED DRIVING MODULE - A first inverter ventilation aperture is disposed so as to pass through a portion of a fin base that faces a bearing, a first rotor ventilation aperture is disposed so as to pass through a portion of a bottom surface portion that faces the bearing, and a first cooling airflow ventilation channel is formed in which a cooling airflow flows radially inward through radiating fins, then flows toward a first surface side of a mount portion through the first inverter ventilation aperture, flows axially through an interior portion of a stator core, and then flows out between the bottom surface portion and a base portion through the first rotor ventilation aperture, and subsequently flows radially outward between the bottom surface portion and the base portion due to rotational driving of a centrifugal fan. | 11-29-2012 |
20120299408 | Permanent Magnet Rotating Machine - Provided is a technology for enhancing the reliability of a permanent magnet rotating machine against thermal degradation of a permanent magnet. Specifically, provided is a permanent magnet rotating machine comprising a housing which houses a rotation shaft, a rotor connected to the rotation shaft and configured to rotate together with the rotation shaft, a stator, and permanent magnets fastened to the rotor or the stator; an air intake port provided at one end of the housing and an air exhaust port provided at the other end of the housing, the air intake port and the air exhaust port being configured to allow cooling air to flow through the housing; and a blower for feeding the cooling air to the air intake port; wherein the permanent magnet rotating machine is configured to be driven by magnetic force of the permanent magnets, and among the permanent magnets, a permanent magnet in the air exhaust port side has a higher coercivity than a permanent magnet in the air intake port side. | 11-29-2012 |
20130076172 | Electric Motor - An electric motor is disclosed that includes a first electric motor frame; a second electric motor frame positioned outside the first electric motor frame; a first ventilation path between the first frame and the second frame; and a first ventilation path fan installed within the first ventilation path. The first ventilation path fan can be integral with a shaft of the electric motor. The first ventilation path can be at least partially defined by the first and second electric motor frame. The electric motor of Claim | 03-28-2013 |
20130082550 | MOTOR ASSEMBLY WITH INTEGRATED COOLING MEANS AND ENCLOSED COMPARTMENT FOR ELECTRONIC CIRCUITRY - A motor assembly includes a structural unit for mounting a motor, for mounting and enclosing electronic circuitry, and for providing a corridor for air to flow and cool the motor and/or the electronic circuitry. The motor assembly includes a substantially water-resistant motor that rotationally drives a fan for cooling the motor and/or rotationally drives a propeller for providing propulsion to watercraft. The electronic circuitry of the motor assembly receives and transmits instructions to a command post by way of electronic signals and distributes power to the motor. The structural unit seals the circuitry from the surrounding environment. | 04-04-2013 |
20130119796 | ROTARY ELECTRIC MACHINE - To include a stator, a rotor that is arranged within the stator, a frame that encloses the stator and the rotor, a pair of bearings that respectively support a driving side and a driven side of a rotary shaft, and a fan that is mounted on the rotary shaft. A plurality of blades that extend in a radial direction of the rotor and are provided to stand at a substantially equal interval in a rotation direction of the rotor are formed in the fan. A cross section of each of the blades in a direction perpendicular to the rotor has an elliptical shape extending in the radial direction, and the cross section widens toward a side of the fan. | 05-16-2013 |
20130175892 | ELECTRICAL MACHINE WITH TWO AXIAL FANS - An electrical machine includes a stator, a rotor magnetically interacting with the stator, a shaft supported on the stator for rotation in a first direction of rotation and in a second direction of rotation which is opposite to the first direction of rotation, wherein the rotor is arranged on the shaft, a first axial fan mounted on the shaft on a side of the rotor for co-rotation with the shaft in the first direction of rotation and having freewheeling capability on the shaft in the second direction of rotation, and a second axial fan mounted on the shaft on the same side of the rotor as the first axial shaft for co-rotation with the shaft in the second direction of rotation and having freewheeling capability on the shaft in the first direction of rotation. | 07-11-2013 |
20130175893 | MOTOR VEHICLE DRIVE UNIT - A motor vehicle drive unit and an automotive vehicle comprising such a motor vehicle drive unit are provided. An electric motor has a rotor and a main stator rotatably mounted to a support structure. A first transmission provides an output to a first wheel axle shaft from the rotor. A second transmission provides an output to a second wheel axle shaft from the main stator. An auxiliary stator at least partially surrounds the main stator and is held stationary relative to the main rotatably mounted stator. A control unit is provided for controlling the auxiliary stator to add or subtract power to the main rotatably mounted stator. | 07-11-2013 |
20130241329 | ELECTRIC MOTOR - According to one embodiment, an electric motor includes a stator, a rotor, bearings and a rotor shaft, in a frame, supporting surfaces on the rotor, and a plurality of threaded holes in the frame, which are configured to receive bolts for pressing the support surfaces from outside. | 09-19-2013 |
20130300230 | ELECTRIC MOTOR HAVING AIR PURGE FUNCTION - An electric motor including a housing; an output shaft stuck out from an end face of the housing; an air purge device having an inner circumferential surface and a mounting surface, the inner circumferential surface surrounding an outer circumferential surface of the output shaft, the mounting surface is mounted on the end face of the housing, the air purge device being configured to supply air to a clearance between the inner circumferential surface and the outer circumferential surface of the output shaft; and a fastening part fastening the air purge device to the end face of the housing in a detachable manner. The housing and the air purge device respectively having fitting parts at which the housing and the air purge device are fitted to each other when mounting the air purge device to the end face of the housing. | 11-14-2013 |
20140021812 | INDUCTION MOTOR AUXILIARY COOLING SYSTEM - A totally enclosed fan cooled (TEFC) induction motor or other type of induction motor auxiliary cooling system has a buffet thermal shroud that is oriented in opposed spaced relationship over existing motor housing cooling fins. An airflow channel is defined between the motor cooling fins and the shroud, for direction and passage of a cooling airflow. Tabs are oriented in the airflow channel between opposed cooling fins where they are in thermal and fluid communication with the cooling air flow. In some embodiments the tabs are shroud fingers that project inwardly from the shroud. The tabs or shroud fingers create turbulence in the cooling air flow that increases convective heat transfer efficiency and contact time between the cooling air and motor cooling fins. Tabs or shroud fingers also absorb heat from the cooling air flow. Shroud fingers also transfer that absorbed heat conductively to the shroud. | 01-23-2014 |
20140028126 | ELECTRIC DRIVE MOTOR FOR A WORK APPARATUS - An electric drive motor for a work apparatus includes a stator having two stator poles which are at a distance from one another in the circumferential direction and have respective field windings. The motor has a rotor which rotates between the stator poles and the rotor shaft of the rotor drives a fan wheel. The cooling-air flow generated by the fan wheel enters the stator, flows therethrough and is discharged therefrom. For effective cooling, a pole intermediate space is provided between the stator poles; and, for the cooling-air flow, this space is filled by a non-magnetic guide body to provide a cooling duct delimited by the guide body and the field windings. The guide body is fastened to a support at one stator end and is inserted axially into the stator at the other end thereof. | 01-30-2014 |
20140265669 | 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. | 09-18-2014 |
20140319940 | ORBITAL MOTOR AND GENERATOR - Described herein is a technology for an electric motor system that reduces stress in motor shaft bearings. Furthermore, the electric motor system that provides an adequate heat ventilation is described herein. | 10-30-2014 |
20140354092 | ROTATING ELECTRICAL MACHINE - A cooling fan is provided at an axial end portion of a rotor. The cooling fan generates a cooling air when rotated integrally with the rotor. On a stator core arranged at a position on a radially outer side of the rotor, a plurality of stator coils are arrayed in a circumferential direction of the stator core. Each stator coil includes a coil end that protrudes from an axial end surface of the stator core. A front housing covering the cooling fan includes: an exhaust port for passing the cooling air therethrough, at least part of the exhaust port being located at a position on a radially outer side of the coil end; and a recess portion opposed to the coil end in an axial direction. | 12-04-2014 |
20150042189 | BRUSH ASSEMBLY FOR AN ELECTRIC MOTOR - An electric motor includes a stator, an armature rotatably received within the stator and having an armature shaft on which a commutator is mounted, and a brush assembly defining a first surface facing the stator and a second surface opposite the first surface. The brush assembly includes a brush card mount disposed around the commutator, brushes in sliding contact with the commutator to supply electric current to the commutator, and thermally-conductive brush holders. Each brush holder a base portion disposed substantially along a same plane as a surface of the brush card mount to form the first surface of the brush assembly, and a main portion protruding from the second surface of the brush assembly to house a respective brush. The base portions of the brush holders are exposed on the first surface of the brush assembly to transfer heat generated by the brushes through the first surface of the brush assembly. | 02-12-2015 |
20150061429 | Blower - The blower comprises: a blower case; a motor case; and a shaft pierced through the both cases. A first communication hole, which is formed in one of axial end faces of the motor case, introduces a part of compressed air into the motor case. A second communication hole, which is formed in the other axial end face of the motor case, discharges the compressed air to outside of the motor case. An external guidance path introduces the discharged air toward an outside face of the motor case. By actuating a motor, the compressed air, which has been introduced from the blower case into the motor case via the first communication hole, is discharged from the second communication hole, and the discharged air is introduced by the external guidance path and blown out toward the outside face of the motor case. | 03-05-2015 |
20150130306 | MOTOR - A motor includes an impeller including a plurality of blades arranged in a circumferential direction and fixed to a shaft between a cover portion and an armature. The cover portion includes at least one cover portion through hole arranged to axially overlap with the blades. A cylindrical portion includes at least one cylindrical portion through hole arranged to radially overlap with the blades. | 05-14-2015 |
20150349609 | FAN ASSEMBLY FOR COOLING ELECTRIC MACHINE AND ELECTRIC MACHINE INCORPORATING SAME - The subject matter described herein includes a fan assembly for cooling an electric machine and an electric machine incorporating such a fan assembly. One exemplary fan assembly according to the subject matter described herein includes a first fan annulus for surrounding a portion of an electric machine. The fan assembly further includes a fan drive circuit for driving the first fan annulus separately from a drive mechanism of the electric machine. The first fan annulus is configured to be, when rotating to cool the electric machine, mechanically disconnected from a housing and a rotor of the electric machine and separated from the housing by radial gap. | 12-03-2015 |
20160020672 | NEGATIVE PRESSURE MOTOR SEALING - A system includes an electric motor including a housing enclosing a substantially-sealed internal environment, a pump including an inlet connected to the substantially-sealed internal environment of the electric motor via a first conduit, and a fluid supply storing a makeup fluid, the fluid supply including an outlet connected to the substantially-sealed internal environment of the electric motor via a second conduit. The pump is configured to create a negative pressure within the substantially-sealed internal environment of the electric motor to mitigate potential contamination of an external environment of the electric motor with the makeup fluid. | 01-21-2016 |
20160079824 | AIR-COOLED ELECTRIC MACHINE AND METHOD OF ASSEMBLING THE SAME - An electric machine comprises a motor housing and an electronics enclosure coupled to the motor housing. The electronics enclosure defines an air passage between the electronics enclosure and the motor housing. The electronics enclosure further defines at least one air intake connected to said air passage. The electric machine also includes a fan configured to draw air through the at least one air intake and into the air passage. | 03-17-2016 |