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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 10213. Отображено 100.

22-03-2012 дата публикации

Air-cooled motor-generator and method for operating a motor-generator

Номер: US20120068561A1

Автор: Alexander Schwery, Benjamin Jordan, Simon Andreas Frutiger, Stefan Baumeister

Принадлежит: Alstom Hydro France SAS

An air-cooled motor-generator ( 10 ) includes a rotor ( 34 ) with a rotor shaft ( 11 ), which is arranged rotatably about a machine axis ( 15 ) and on which a rotor winding ( 16 ) is arranged, and a stator ( 35 ) with a stator laminate stack ( 18 ) and a stator winding ( 17 ) arranged therein, which concentrically surrounds the rotor winding ( 16 ) A closed cooling circuit operating with cooling air ( 24 ) is provided, with the cooling air in the cooling circuit flowing through the rotor winding ( 16 ) and the stator winding ( 17 ) radially from the inside outwards, the cooling air being cooled in coolers ( 19 ) arranged outside the stator ( 35 ) and being fed back to the rotor ( 34 ). Cooling which can be changed before or during operation is achieved in a simple manner by virtue of the fact that adjustable throttle devices are provided for adjusting the volume flow of the cooling air in the cooling circuit at the coolers ( 19 ).

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Номер записи: 1

19-07-2012 дата публикации

Controller-integrated electric rotating machine with a shifted control circuit

Номер: US20120181903A1

Автор: Masaki Kato, Yoshihito Asao

Принадлежит: Mitsubishi Electric Corp

In a controller-integrated electric rotating machine provided with a power circuit unit and a control circuit unit, a cooling property is improved so that the control circuit unit does not impair a flow of air for cooling the power circuit unit. A power circuit unit having switching elements for converting DC power to AC power for supplying the AC power to an electric rotating machine, a control circuit unit for controlling the switching elements of the power circuit unit, and a rotational position detection sensor arranged on a rotating shaft for detecting the rotation of the rotating shaft are provided. The control circuit unit is disposed, when viewed in the direction of the rotating shaft, at a position where the power circuit unit is not disposed and is shifted radially outward so as not to overlap the rotational position detection sensor.

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Номер записи: 2

02-08-2012 дата публикации

System and method for increasing airflow in electric machines

Номер: US20120194014A1

Автор: Nicholas G. Lang

Принадлежит: Siemens Industry Inc

An air-cooled electric machine, such as an alternating current motor, having a housing containing a rotating shaft and a housing airflow cooling path has cooling vents on the housing periphery. An external cooling system having a duct enclosure is coupled to the housing exterior, and defines a duct airflow cooling path that is in communication with the housing airflow cooling vent and housing airflow cooling path. A duct fan within the duct enclosure external the housing is coupled to and driven by the shaft. The duct fan circulates air at above ambient pressure into the housing airflow cooling path.

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Номер записи: 3

09-08-2012 дата публикации

Power Tool

Номер: US20120200181A1

Автор: Katsuhiro Oomori, Kazutaka Iwata, Kenichirou Yoshida, Yoshihiro Komuro

Принадлежит: Katsuhiro Oomori, Kazutaka Iwata, Kenichirou Yoshida, Yoshihiro Komuro

A power tool includes a housing, a brushless motor, and a cover member. The housing has an air intake hole and an air exhaust hole formed therein, the housing having an inner surface. The brushless motor has an outer surface disposed in the housing, a first endface near the air intake hole, and a second endface near the air exhaust hole. The cover member covers at least one of the first endface and the second endface for preventing dust from entering the brushless motor. The inner surface of the housing and outer surface of the brushless motor define a circulation path providing communication between the air intake hole and the air exhaust hole.

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Номер записи: 4

20-09-2012 дата публикации

Blower

Номер: US20120237373A1

Автор: Jian Zhao, Ke Yan, Mao Xiong Jiang, Yong Wang, Yue Li, Zhi Jun Wang

Принадлежит: Johnson Electric SA

A blower includes an air pump and a motor. The pump includes an impeller and a casing housing the impeller. The casing includes a casing inlet through which air is drawn in and a casing outlet through which the air is expelled by the impeller. The motor is arranged at the casing outlet and includes a stator and a rotor. The stator includes a stator core and a plurality of coils. The stator core includes a substantially ring-shaped yoke and a plurality of teeth extending inwards from the yoke. Each coil is wound around the yoke and is partially sandwiched between two adjacent teeth. The impeller is driven by the rotor.

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Номер записи: 5

21-02-2013 дата публикации

Segmented fan assembly

Номер: US20130045120A1

Автор: Alexander Gabriel Beckford, Devon Walter Story, Donald Alden VanSlyke, Henry August Scarton, Kyle Richard Wilt, Madhu Bharadwaj, Rajiv Rajan, Sadeo Ramtahal, Samir Armando Salamah

Принадлежит: General Electric Co

Systems and devices for thermodynamically regulating portions of a dynamoelectric machine are disclosed. In one embodiment, a fan assembly element includes: an axially inner shroud segment configured to form a portion of an annular assembly about a rotor of a dynamoelectric machine, wherein the axially inner shroud segment includes a rotor hub interface configured to physically connect to a complementary portion of a rotor hub; a set of fan blades physically connected to and extending axially from a face of the axially inner shroud segment; and an axially outer shroud segment physically connected to the set of fan blades.

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Номер записи: 6

28-03-2013 дата публикации

Electric Motor

Номер: US20130076172A1

Автор: Kazuaki Yuuki, Shigetomo Shiraishi, Shinichi Noda, Taihei Koyama

Принадлежит: Individual

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 1 further comprising a control apparatus attached outside of the second frame. The electric motor can also include a second ventilation path between the control apparatus and the second frame wherein the second ventilation path is in communication with the first ventilation path. The electric motor can also include a second ventilation path fan located in the second ventilation path.

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Номер записи: 7

04-04-2013 дата публикации

DYNAMOELECTRIC MACHINE HAVING AN INTEGRATED FAN

Номер: US20130082578A1

Автор: Winkler Gunther

Принадлежит: Siemens Aktiengesellschft

A dynamo-electric machine, in particular a multi-pole dynamo-electric machine includes a shaft and an integrated fan which is connected to the shaft by a friction-wheel planetary gear. The friction-wheel planetary gear has first and second rolling bearings, with the first rolling bearing having an outer ring mounted in the hub of the fan, and the second rolling bearing having an outer ring which is press-fitted in the hub of the fan. Arranged between the first and second rolling bearings is a driving bush for transmitting a rotational speed of the shaft onto balls of the second bearing to thereby increase a rotational speed of the fan by a predefined factor compared to the rotational speed of the shaft. 15-. (canceled)6. A dynamoelectric machine , in particular a multipole dynamoelectric machine , comprising:a shaft;an integrated fan having a hub;a friction-wheel planetary gear connecting the fan to the shaft, said friction-wheel planetary gear having first and second rolling bearings, said first rolling bearing having an outer ring mounted in the hub of the fan, and said second rolling bearing having an outer ring which is press-fitted in the hub of the fan; anda driving bush arranged between the first and second rolling bearings for transmitting a rotational speed of the shaft onto balls of the second bearing to thereby increase a rotational speed of the fan by a predefined factor compared to the rotational speed of the shaft.7. The dynamoelectric machine of claim 6 , wherein the first and second rolling bearings have different diameters.8. The dynamoelectric machine of claim 6 , wherein the friction-wheel planetary gear is arranged in the hub of the fan. The invention relates to a dynamoelectric machine having an integrated fan on a shaft.In dynamoelectric machines, electric motors and generators having integral ventilation the rotational speed of a rotor and of the fan integrated on a shaft and co-rotationally connected to the shaft are the determining variable ...

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Номер записи: 8

18-04-2013 дата публикации

Rotary electric machine

Номер: US20130093272A1

Автор: Hirofumi SHIMONO

Принадлежит: Yaskawa Electric Corp

A rotary electric machine according to embodiments includes a tubular motor frame, a tubular motor cover, and a cooling fan. The motor frame includes therein a stator and a rotor. The motor cover houses the motor frame and includes a suction hole for cooling air at its counter-load side and an exhaust hole at its load side. Herein, the exhaust hole turns the exhaust direction of the cooling air to the counter-load side. The cooling fan sucks the cooling air from the suction hole into the motor cover and exhausts the cooling air from the exhaust hole to the outside of the motor cover.

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Номер записи: 9

02-05-2013 дата публикации

ROTOR FOR ELECTRICAL MACHINE, IN PARTICULAR FOR A SYNCHRONOUS MOTOR

Номер: US20130106211A1

Автор: Holzner Andreas

Принадлежит: BRUSA ELEKTRONIK AG

Electrical machine rotors (R) suited for synchronous motors of electric vehicle drives. A rotor (R) includes a rotor shaft (), a sheet stack (), windings, and a restraining system () with support elements. The support elements of the restraining system include support rings () to protect winding heads () projecting from the sheet stack () in the axial direction against radial stresses. The elements of the restraining system () protecting the winding heads () from stresses also include axially inner end caps () configured as supports for the finished winding heads () in the operating state, and as guides and supports during the winding of the pole windings of the rotor (R) about the axial edge of the sheet stack (). The axially outer support rings () cooperate with the axially inner end caps () so that the support rings () may absorb centrifugal forces acting on winding heads () end caps (). 133-. (canceled)34. An electrical machine rotor comprising:a rotor shaft, said shaft having an axis;a sheet stack disposed on said rotor shaft, said sheet stack having an axial end;a plurality of windings in said sheet stack, said windings having respective end portions projecting from said sheet stack in the axial direction;a restraining assembly configured to protect said winding respective end portions from stresses;said restraining assembly including axially-inner end caps on said end of said sheet stack, said end caps serving as respective geometric guides around axial edges of said sheet stack for respective ones of said windings;and,said restraining assembly including an axially-outer support ring operatively connected with said axially-inner end caps to absorb the centrifugal forces exerted in said end caps by said windings end portions.35. An electrical machine rotor as claimed in claim 34 , further comprising:clamping screws connecting said end caps and said support ring to said sheet stack with a predetermined pretension to form an assembled compact rotor stack; and, ...

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Номер записи: 10

16-05-2013 дата публикации

ROTARY ELECTRIC MACHINE

Номер: US20130119796A1

Автор: Maeda Shinsaku

Принадлежит: Mitsubishi Electric Corporation

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. 16-. (canceled)7. A rotary electric machine comprising: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; anda fan that is installed on inside of the rotary electric machine, that is mounted on the rotary shaft, and that stirs air in the inside of the rotary electric machine, whereina plurality of blades that extend in a radial direction of the rotor and that are provided to stand at a substantially equal interval in a rotation direction of the rotor are formed in the fan, andeach of the blades is provided between a disk-shaped main plate that is formed with a through hole through which the rotary shaft is inserted and a ring that holds an end opposite to the main plate of the blade, and each of the blades has an elliptical shape extending in a direction from the through hole to an outer periphery of the main plate, and widens from the ring toward the main plate.8. The rotary electric machine according to claim 7 , whereina surface shape of each of the blades does not have a straight portion, anda radius of curvature of the surface shape becomes larger from a first top in the rotation direction toward a second top in a center direction of the fan.9. The rotary electric machine according to claim ...

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Номер записи: 11

23-05-2013 дата публикации

COOLING STRUCTURE FOR BRUSHLESS MOTOR

Номер: US20130127303A1

Автор: MATSUMOTO Hiroshi

Принадлежит: Panasonic Corporation

A cooling structure for a brushless motor, which includes a stator, a rotor, and a motor shaft arranged integrally with the rotor. The stator includes a stator core including an inner circumferential surface, a cylindrical portion including first and second end surfaces adjacent to the inner circumferential surface, and teeth projecting from the inner circumferential surface. An insulator covers the inner circumferential surface, the first and second end surfaces, and the teeth. A coil is wound around each tooth that is covered by the insulator. The cooling structure includes a cooling fan coupled to one end of the motor shaft and arranged closer to the second end surface than the first end surface. At least one ventilation recess is arranged between two adjacent ones of the teeth in the circumferential direction in a portion of the insulator that covers the first end surface. 1. A cooling structure for a brushless motor , wherein the brushless motor includes a stator , a rotor rotated in the stator , and a motor shaft arranged integrally with the rotor , the stator includes a stator core including an inner circumferential surface , a cylindrical portion including first and second end surfaces , which are adjacent to the inner circumferential surface , a plurality of teeth projecting from the inner circumferential surface , an insulator that covers the inner circumferential surface , the first and second end surfaces , and the teeth , and a coil wound around each tooth that is covered by the insulator , the cooling structure comprising:a cooling fan coupled to one end of the motor shaft and arranged closer to the second end surface than the first end surface; andat least one ventilation recess arranged between two adjacent ones of the teeth in the circumferential direction in a portion of the insulator that covers the first end surface.2. The cooling structure according to claim 1 , further comprising at least one ventilation groove extending in an axial direction ...

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Номер записи: 12

11-07-2013 дата публикации

Electrical machine with two axial fans

Номер: US20130175892A1

Автор: Klaus Büttner, Norbert WÖHNER

Принадлежит: SIEMENS AG

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.

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Номер записи: 13

11-07-2013 дата публикации

MOTOR VEHICLE DRIVE UNIT

Номер: US20130175893A1

Автор: Stenvall Lars Johan

Принадлежит: VOLVO CAR CORPORATION

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. 1. A motor vehicle drive unit comprising:an electric motor having a rotor and a main stator rotatably mounted to a support structure;a first transmission providing an output to a first wheel axle shaft from the rotor;a second transmission providing an output to a second wheel axle shaft from the main stator;an auxiliary stator at least partially surrounding the main stator and held stationary relative to the main rotatably mounted stator; andmeans for controlling the auxiliary stator to add or subtract power to the main rotatably mounted stator.2. A motor vehicle drive unit according to claim 1 , wherein the auxiliary stator is arranged coaxially encircling the main stator.3. A motor vehicle drive unit according to further comprising cooling fins arranged at the periphery of the main rotatably mounted stator.4. A motor vehicle drive unit according to claim 3 , wherein the main rotatably mounted stator is enclosed by an air duct cover.5. A motor vehicle drive unit according to claim 4 , wherein the cooling fins are arranged to provide a fan within the air duct cover upon rotation of the main stator.6. A motor vehicle drive unit according to claim 4 , wherein the cooling fins are screw thread shaped such as to provide an air screw fan within the air duct cover upon rotation of the main stator.7. A motor vehicle drive unit according to claim 4 ...

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Номер записи: 14

18-07-2013 дата публикации

Rotary electric machine, bearing attaching and detaching jig, and bearing replacement method

Номер: US20130181559A1

Автор: Kenta Kaneko

Принадлежит: Mitsubishi Electric Corp

To provide a rotary electric machine including a stator iron core, a rotor including a lamination core that is arranged within the stator iron core and is constituted by laminating electromagnetic steel plates and iron core holders that cover both ends of the lamination core, a frame including a cylindrical portion that encloses the stator iron core and the rotor and a rotor-shaft supporting unit that extends in the direction of a rotor shaft and supports the rotor shaft, and cartridges that are detachably attached to the rotor-shaft supporting unit and rotatably support the rotor shaft, in which on the iron core holder and the iron core holder, recessed portions are circumferentially provided, into which end portions of jigs that are inserted through the rotor-shaft supporting unit to enable the cartridges to be detached and attached are fitted.

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Номер записи: 15

25-07-2013 дата публикации

Magnetic brake

Номер: US20130186721A1

Автор: Bruce W. Keller, Jim M. Bogdanowicz, Manfred G. Michelson, Markus G. Michelson

Принадлежит: Technical Film Systems Inc

A magnetic brake has an outer stator surrounding an inner stator with a circumferential slot between the outer stator and the inner stator. A coil is provided in the inner stator adjacent to the circumferential slot. A drag plate is attached to a rotatable shaft extending centrally through the inner stator. A drag ring joined to the drag plate extend into the circumferential slot. The drag ring may be an annular cylindrical ring section separate from the drag plate. Vent holes pass through the inner stator adjacent and parallel to the shaft. The magnetic brake uses both hysteresis and eddy current braking.

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Номер записи: 16

08-08-2013 дата публикации

POWER TOOL

Номер: US20130200733A1

Автор: LAU James Ching-Sik

Принадлежит: JOHNSON ELECTRIC S.A.

A power tool includes a casing with an inlet and an outlet extending in a radial direction of the casing, a motor installed within the casing between the inlet and the outlet. The motor includes a stator and a rotor with a shaft, an air passage being formed between a radially outer surface of the stator and an inner surface of the casing. The air passage extends in the axial direction of the casing. A heat dissipation device is arranged on the radially outer surface of the stator for absorbing heat from the stator, and is disposed in the air passage. A fan is fixed to the shaft of the rotor. Air flow generated by the fan enters the casing via the inlet and exits the casing via the outlet after passing through the air passage and the heat dissipation device, 1. A power tool comprising:a casing with an inlet and an outlet extending in a radial direction of the casing;a motor installed within the casing between the inlet and the outlet, the motor comprising a stator and a rotor with a shaft, an air passage being formed between a radially outer surface of the stator and an inner surface of the casing, the air passage extending in a direction parallel to an axial direction of the casing;a heat dissipation device being arranged on the radially outer surface of the stator for absorbing heat from the stator, the heat dissipation device being disposed in the air passage; anda fan attached to the shaft of the rotor,wherein air flow generated by the fan enters the casing via the inlet and exits the casing via the outlet after passing through the air passage and heat dissipation device.2. The power tool of claim 1 , wherein the fan is a centrifugal fan that is located at one end of the motor with a radially outer side of the fan facing the outlet.3. The power tool of claim 2 , wherein the fan extends radially beyond the radially outer surface of the stator.4. The power tool of claim 1 , wherein the heat dissipation device comprises a plurality of fins that extend in a direction ...

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Номер записи: 17

19-09-2013 дата публикации

POWER TOOL

Номер: US20130241325A1

Автор: LAU James Ching-Sik

Принадлежит: JOHNSON ELECTRIC S.A.

A power tool has a casing and a motor assembly installed within the casing. The motor assembly comprises a motor, a heat dissipation device, a fan and a guiding member. The motor has a stator and a rotor. The heat dissipation device has an annular heat absorbing section which is fitted to a housing of the stator and a plurality of fins extending from the heat absorbing section for dissipating heat. Air flow generated by the fan is guided to the fins of the heat dissipation device by the guiding member to cool the motor. 1. A motor assembly comprising:a motor comprising a stator and a rotor having a shaft;a heat dissipation device disposed about a radially outer surface of the stator for absorbing heat from the stator,a fan attached to the rotor; anda guiding member configured to guide airflow generated by the fan to the heat dissipation device,wherein airflow generated by the fan passes through an airflow passage inside the motor from one axial open end of the motor to the other, and is then guided to the heat dissipation device by the guiding member.2. The motor assembly of claim 1 , wherein the heat dissipation device comprises a heat absorbing section and a plurality of fins extending from the heat absorbing section claim 1 , the heat absorbing section being disposed around and contacting with a radially outer surface of the stator.3. The motor assembly of claim 1 , wherein the guiding member comprises a pair of curved sections integrally formed with the heat dissipation device.4. The motor assembly of claim 1 , wherein the guiding member is integrally formed with the fan.5. The motor assembly of claim 1 , wherein the stator comprises a housing and at least one permanent magnet fixed to an inner surface of the housing.6. A power tool comprising:a casing with an inlet and an outlet; anda motor assembly installed within the casing, the motor assembly comprising a motor with a housing, a heat dissipation device, and a fan, an air passage being formed between the ...

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Номер записи: 18

19-09-2013 дата публикации

ELECTRIC MOTOR

Номер: US20130241329A1

Автор: Murakami Satoru, Yagi Nobuyuki

Принадлежит:

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. 1. An electric motor comprising:a stator, a rotor, bearings and a rotor shaft in a frame;supporting surfaces on the rotor; anda plurality of threaded holes in the frame, which are configured to receive bolts for pressing the support surfaces from outside.2. An electric motor according to claim 1 , wherein the rotor comprises a rotor core attached to the rotor shaft claim 1 , and rotor holders attached to the rotor shaft at respective sides of the rotor core and respectively including the supporting surfaces.3. An electric motor according to claim 1 , wherein the rotor comprises a rotor core attached to the rotor shaft claim 1 , and a first separating plate and a second separating plate attached to the rotor shaft and respectively comprising the supporting surfaces.4. An electric motor according to claim 1 , wherein the rotor comprises a rotor core attached to the rotor shaft claim 1 , and a ventilating fan and a supporting body attached to the rotor shaft at respective sides of the rotor core and respectively comprising the supporting surfaces.5. An electric motor comprising:a frame supporting a stator;a bracket and an end plate configured to close respective ends of the frame;a first bearing housing and a second bearing housing respectively retaining bearings, and respectively fixed to the bracket and the end plate from an outside;a rotor shaft arranged inside the frame and rotatably supported by the bearings;a rotor attached to the rotor shaft and opposing the stator;supporting surfaces on the rotor;a plurality of threaded holes formed respectively in the bracket and the end plate to oppose the supporting surfaces, and configured to receive bolts for pressing the support surfaces from ...

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Номер записи: 19

17-10-2013 дата публикации

ROTOR ASSEMBLY FOR BRUSHLESS MOTOR FOR A POWER TOOL

Номер: US20130270932A1

Автор: Hatfield Eric E., Ortt Earl M., STAUFFER Joseph G.

Принадлежит: BLACK & DECKER INC.

A power tool includes a brushless DC motor having a stator assembly and a rotor assembly at least a portion of which is arranged pivotably inside the stator assembly. The rotor assembly includes a rotor lamination stack housing a permanent magnets and a rotor fixedly housed inside a center portion of the lamination stack to pivot therewith. A fan may be fixedly attached to the rotor and arranged adjacent the stator assembly. The fan includes a back plate and blades longitudinally projecting from a periphery of the back plate towards the stator assembly, where a middle portion of the back plate is contoured away from an end cap of the motor to accommodate a projecting portion of the end cap. The permanent magnets may extend beyond the longitudinal length of the rotor lamination stack towards a magnet sensor to facilitate sensing of the permanent magnet via the magnet sensor. 1. A power tool comprising:a housing;a brushless DC motor housed inside the housing, the motor comprising a stator assembly and a rotor assembly at least a portion of which is arranged pivotably inside the stator assembly, the rotor assembly including a rotor lamination stack housing a plurality of permanent magnets, a rotor fixedly housed inside a center portion of the lamination stack to pivot therewith, and a fan fixedly attached to the rotor and arranged adjacent the stator assembly, the fan having a back plate and a plurality of blades longitudinally projecting from a periphery of the back plate towards the stator assembly, wherein a middle portion of the back plate is contoured away from an end cap of the motor to accommodate a projecting portion of the end cap.2. The power tool of claim 1 , wherein the projecting portion of the end cap encapsulates an end bearing of the rotor.3. The power tool of claim 1 , wherein the projecting portion partially protrudes inside the middle portion of the back plate.4. The power tool of claim 1 , wherein the fan plate is securely fastened to the rotor via ...

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Номер записи: 20

17-10-2013 дата публикации

WORK APPARATUS

Номер: US20130270933A1

Автор: Kraetzig David

Принадлежит: ANDREAS STIHL AG & CO. KG

A work apparatus has a tool which is driven in rotation by a drive motor via a transmission. The drive motor is an electric motor which has a commutator and brushes. The drive motor is arranged in a motor housing and drives an impeller wheel which conveys a cooling airflow for the drive motor. Simple and effective lubrication of the transmission is achieved with the cooling airflow flowing past the commutator and brushes and the transmission is arranged downstream of the commutator in the cooling airflow. The motor housing is formed in a manner closed toward the transmission housing on that end side that faces the transmission housing and is connected to the transmission housing via a flow connection. 1. A work apparatus comprising:a work tool;a transmission;an electric drive motor for rotatably driving said work tool via said transmission;a motor housing defining a flow path for conducting a cooling airflow therealong;said drive motor being mounted in said motor housing and having a coil and a commutator assembly including a commutator and brushes;a fan wheel driven by said drive motor and said fan wheel being configured to move said cooling airflow over said coil and said commutator assembly during operation;said motor housing having an exit opening for passing said cooling airflow out from said motor housing;said exit opening being arranged in said flow path downstream of said commutator assembly;a transmission housing;said motor housing having an end facing toward said transmission housing and said motor housing being configured to be closed off at said end thereof;a flow connection connecting said motor housing to said transmission housing and configured to conduct at least a portion of said cooling airflow into said transmission housing; and,said transmission being arranged in said cooling airflow through said transmission housing.2. The work apparatus of claim 1 , wherein said cooling airflow transports carbon dust of said brushes to said transmission.3. The ...

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Номер записи: 21

24-10-2013 дата публикации

Airflow Management

Номер: US20130278093A1

Автор: Baxter Richard

Принадлежит: ROBERT BOSCH GMBH

The present invention relates to an airflow management system, particularly for a lawn mower, especially a robotic lawn mower. We describe a battery-operated robotic lawn mower with an active airflow management system, said active airflow management system comprising: at least one first air vent positioned on an underside of said mower; at least one second air vent; an internal housing surrounding a motor; a fan; and at least one cooling air channel located within said housing and around said motor. An air flow path is defined between the first and the second vents; and said at least one second vent has a lower air flow capacity than an air flow capacity of said at least one cooling air channel, such that in operation, a greater volume of air is drawn through the first vent than the second. 1. A battery operated robotic lawn mower with an active airflow management system , said active airflow management system comprising:at least one first air vent positioned on an underside of said mower;at least one second air vent;an internal housing surrounding a motor;a fan; andat least one cooling air channel located within said internal housing and around said motor,wherein an air flow path is defined between the at least one first air vent and the at least one second air vent, andwherein said at least one second air vent has a lower air flow capacity than an air flow capacity of said at least one cooling air channel such that, in operation, a greater volume of air is drawn through the first vent than the second.2. The lawn mower as claimed in claim 1 , further comprising:an enveloping outer shell, defining an insulating layer between said mower and ambient atmospheric conditions.3. The lawn mower as claimed in claim 1 , wherein claim 1 , when said mower is in operation claim 1 , said fan provides a downward flow of air around said motor.4. The lawn mower as claimed in claim 1 , wherein said at least one first air vent is positioned behind a cutting area of said mower.5. The ...

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Номер записи: 22

21-11-2013 дата публикации

LAMINATED ROTOR STRUCTURE FOR A PERMANENT MAGNET SYNCHRONOUS MACHINE

Номер: US20130307358A1

Автор: Parviainen Asko

Принадлежит: AXCO-Motors Oy

The invention relates to a laminated rotor structure for a permanent magnet synchronous machine wherein disks () of a ferromagnetic material constitute the body of the rotor. The body includes bars () of a damper winding that extend axially close to the surface () from one end thereof to the other, and a circle of permanent magnets () disposed in a V-shaped configuration inside the circle formed by the bars, in which permanent magnets the first ends () are disposed close to the outer perimeter of the rotor and the second ends () are disposed closer to the central axis of the rotor. According to the invention, two permanent magnets () constitute a pair of permanent magnets wherein the magnets are disposed at an angle (a) to each other so that their first ends () are disposed at a distance from each other and their second ends () in proximity to each other. In addition, a pair of permanent magnets includes an air channel () that extends axially through the laminar structure of the rotor in direct heat transfer contact with the second ends () of the magnets in the pair of magnets. 1. A laminated rotor structure for a permanent magnet synchronous machine wherein disks of a ferromagnetic material constitute the body of the rotor that includes bars of a damper winding extending axially close to the surface from one end thereof to the other , and a circle of permanent magnets disposed in a V-shaped configuration inside the circle formed by the bars , in which permanent magnets the first ends are disposed close to the outer perimeter of the rotor and the second ends are disposed closer to the central axis of the rotor , wherein two permanent magnets constitute a pair of permanent magnets wherein the magnets are disposed at an angle to each other so that their first ends are disposed at a distance from each other and their second ends in proximity to each other , and that a pair of permanent magnets includes an air channel that extends axially through the laminar structure ...

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Номер записи: 23

19-12-2013 дата публикации

Voltage regulator device for a rotary electric machine, bearing for such a machine equipped with such a device and such a machine comprising such a bearing

Номер: US20130334914A1

Автор: Benoit WALME, Brice Lecole, Christophe Dugue

Принадлежит: Valeo Equipements Electriques Moteur SAS

A voltage regulator device for a rotary electric machine, notably an alternator and/or an alternator/starter of a motor vehicle, said regulator device ( 14 ) comprising a support ( 34 ) and one or more electronic components ( 28 ) able to play a part in controlling said electric machine, the support comprising a first part ( 60 ) on which the component or components is or are mounted, said first part having an edge ( 62 ) equipped with a brush holder ( 50 ) equipped with at least one housing, known as the brush housing, capable of housing a brush ( 15 ) for making an electrical connection with a rotor ( 3 ) of the electric machine possible. According to the invention, said device is configured to allow air to flow through said first part of the support, in contact with said brush holder. The invention also relates to an assembly of a device for rectifying the current produced by the electric machine and of such a regulator device, to a bearing of an electric machine equipped with such an assembly and to an electric machine equipped with such a bearing.

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Номер записи: 24

26-12-2013 дата публикации

FASTENING DEVICE FOR AN ARMATURE LAMELLA STACK

Номер: US20130342038A1

Автор: Fix Vincent, Kopf Frank, Lehnert Walter, Meyer Friedrich, Nicgorski Dana, Strupp Michael

Принадлежит:

Fastening device () for an armature lamella stack () of a DC motor, characterized in that the fastening device () is disposed between the armature lamella stack () and a shaft () of the DC motor and is designed as a torsionally soft connection of said armature lamella stack () to the shaft (). 11212323. A fastening device () for an armature lamella stack () of a DC motor , characterized in that the fastening device () is disposed between the armature lamella stack () and a shaft () of the DC motor and is a torsionally soft connection of said armature lamella stack () to the shaft ().21. The fastening device according to claim 1 , characterized in that the fastening device () is formed from plastic.3. The fastening device according to claim 2 , characterized in that the fastening device is integrally formed with a plastic part of the armature insulation of the DC motor.44131. The fastening device according to claim 1 , characterized in that radial webs () are formed between a first section of the fastening device () arranged on the shaft () and a second section of said fastening device () which is radially spaced apart from the first section.54. The fastening device according to claim 4 , characterized in that the webs () are at least partially disposed in an axial direction between the first and the second section.64. The fastening device according to claim 4 , characterized in that the webs () are embodied as fan blades.7. The fastening device according to claim 1 , characterized in that the fastening device is a rubber-to-metal element.855655a,ba,b. The fastening device according to claim 7 , characterized in that metal elements () of the rubber-to-metal element have a cylindrical form and have radial formations () which are arranged in each case on the metal elements () so as to be aligned relative to one another and offset.97. The fastening device according to claim 1 , characterized in that the fastening device is integrally formed with a plastic part of a ...

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Номер записи: 25

26-12-2013 дата публикации

System and Method for Cooling Dynamoelectric Machine

Номер: US20130342044A1

Автор: Bathon Tobias, Kruckenhauser Erich, Vallinayagam Sadhasivam

Принадлежит: GE JENBACHER GMBH & CO. OG

A system for cooling a dynamoelectric machine is provided. The system includes a coolant medium inlet, a coolant medium outlet and a fan connected to a rotor of the dynamoelectric machine, The system further includes a flow control device configured to control the amount of the coolant medium passing through the dynamoelectric machine by controlling an opening area of at least one of the coolant medium inlet and the coolant medium outlet. The system further includes a winding temperature measurement system configured to measure the temperature of one or more windings in the dynamoelectric machine, and control the flow control device by adjusting the opening area of at least one of the coolant medium inlet and the coolant medium outlet based on the temperature of the windings in the dynamoelectric machine to at least one of reduce windage loss and control coolant medium pressure within the dynamoelectric machine. 1. A system for cooling a dynamoelectric machine , the system comprising:a coolant medium inlet;a coolant medium outlet;a fan connected to a rotor of the dynamoelectric machine, the fan configured to provide a flow of a coolant medium through the dynamoelectric machine;a flow control device configured to control the amount of the coolant medium passing through the dynamoelectric machine by controlling an opening area of at least one of the coolant medium inlet and the coolant medium outlet; anda winding temperature measurement system configured to measure the temperature of one or more windings in the dynamoelectric machine,wherein the winding temperature measurement system is configured to control the flow control device by adjusting the opening area of at least one of the coolant medium inlet and the coolant medium outlet based on the temperature of the one or more windings in the dynamoelectric machine to at least one of reduce windage loss and control coolant medium pressure within the dynamoelectric machine.2. The system of claim 1 , wherein the flow ...

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Номер записи: 26

26-12-2013 дата публикации

AIR COOLED ELECTRIC MOTOR

Номер: US20130342051A1

Автор: Belko John R., Critchley Matthew William, English Stephen Thomas, Fitzgerald Janice, Henry Joseph, III Frank Edward, Leung Ngan Fai, Shanks Barbara Mary, Staigl

Принадлежит: Regal Beloit America, Inc.

An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft. 1. An electric motor assembly comprising:a stator including a set of windings, the stator having a first end, a second end, and an outer radial surface;a rotor including a shaft having an axis;a first frame supporting the shaft at a first axial position;a canopy substantially surrounding the first frame, the canopy including a fluid inlet and a fluid discharge;a second frame supporting the shaft at a second axial position and including at least one fluid outlet;a chute downstream of the canopy fluid discharge, the chute directing fluid flow along the outer radial surface of the stator towards the fluid outlet; anda fan coupled to the shaft for rotation with the shaft.2. The electric motor assembly of claim 1 , wherein the second frame further includes a fan housing and the fan is substantially disposed within the fan housing.3. The electric motor assembly of claim 1 , further comprising:a stator cup substantially surrounding the first end of the stator; anda flange directing fluid flow from the fluid discharge of the canopy toward the stator cup.4. The electric motor assembly of claim 3 , wherein the canopy further comprises an inner wall and an outer wall claim 3 , the fluid inlet disposed between the inner wall and the outer wall.5. The electric motor assembly of claim 4 , wherein the ...

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Номер записи: 27

16-01-2014 дата публикации

Power Tool

Номер: US20140015350A1

Автор: Katsuhiro Oomori, Kazutaka Iwata, Kenichirou Yoshida, Yoshihiro Komuro

Принадлежит: HITACHI KOKI CO LTD

A power tool includes a housing, a brushless motor, and a cover member. The housing has an air intake hole and an air exhaust hole formed therein, the housing having an inner surface. The brushless motor has an outer surface disposed in the housing, a first endface near the air intake hole, and a second endface near the air exhaust hole. The cover member covers at least one of the first endface and the second endface for preventing dust from entering the brushless motor. The inner surface of the housing and outer surface of the brushless motor define a circulation path providing communication between the air intake hole and the air exhaust hole.

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Номер записи: 28

30-01-2014 дата публикации

OUTER ROTOR TYPE MOTOR

Номер: US20140028125A1

Автор: Arai Kazuo

Принадлежит: NAMIKI SEIMITSU HOUSEKI KABUSHIKI KAISHA

To provide an outer rotor type motor configured so that the lead wires of the winding coils for the stators are routed simply. An outer rotor type motor is provided with stators arranged in the axial direction, a rotor supported so as to rotate around the stators, a drive shaft provided integrally with the rotor, winding coils respectively wound on the stators, and magnets affixed to the rotor so as to respectively correspond to the stators. The outer rotor type motor is configured so that the rotor and the drive shaft are rotated by the magnetic action between the winding coils and the magnets. A penetration portion extending in the axial direction is provided in at least one of the stators, and the lead wires of the winding coils are inserted through the penetration portion and led to the outside. 1. An outer rotor type motor comprising:a plurality of stators arranged in an axial direction;a rotor supported so as to be rotatable around the plurality of stators;a drive shaft integrally installed in the rotor;a winding coil wound for each of the stators; anda magnet fixed to the rotor, whereinthe rotor and the drive shaft are rotated by magnetic action between the winding coil and the magnet, anda penetration portion extending in the axial direction is installed in at least one of the plurality of stators and a lead wire of the winding coil is inserted to the penetration portion (or the penetration portion installed in the stator) and led outside.2. The outer rotor type motor according to claim 1 , whereina rigid support member that fixedly supports the plurality of stators in an unrotatable manner from one end side of the axial direction and supports the rotor in a rotatable manner is installed,a penetration portion that extends in the axial direction is installed in the rigid support member, andthe lead wire is drawn from the penetration portion (or the penetration portion installed in the rigid support member).3. The outer rotor type motor according to claim 1 , ...

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Номер записи: 29

30-01-2014 дата публикации

Electric drive motor for a work apparatus

Номер: US20140028126A1

Автор: Adolf Juergen Neumann, Alexander Haas, Markus Maier, Michael Renz

Принадлежит: Andreas Stihl AG and Co KG

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.

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Номер записи: 30

27-02-2014 дата публикации

ELECTRIC MACHINE

Номер: US20140054990A1

Автор: Jägers Therese, NORDLUND Erik, Sima Mikael

Принадлежит:

An electric machine with a rotor () rotatably disposed within a stator () has a plurality of permanent magnets received in the rotor body of the rotor. Rotor body plates are stacked so as to form at least two first channels () extending inside the rotor body from one axial end of the rotor to an opposite axial end thereof and having an opening () to the exterior of the rotor body in an end surface of the latter at at least one of these axial ends, and at least one separate second channel () associated with each first channel and connecting the respective first channel to a space circumferentially surrounding the rotor and separating the rotor and the stator by opening at the periphery of the rotor body so as to upon rotation of the rotor throw air out from said second channel to said space for cooling the rotor body. 23243131. An electric machine according to claim 1 , wherein said second channels () extend substantially radially with respect to said axis of rotation of the rotor () from the respective first channel ( claim 1 , ′) to the opening at the periphery of the rotor body.3323131. An electric machine according to claim 1 , wherein the rotor comprises a plurality of second channels () per first channel ( claim 1 , ′) having connections thereto distributed along the extension of the first channel.4323131. An electric machine according to claim 3 , wherein said connections of said second channels () are substantially uniformly distributed over the extension of the respective first channel ( claim 3 , ′).531315. An electric machine according to claim 1 , wherein said first channels ( claim 1 , ′) extend substantially axially through the rotor body () with respect to said axis of rotation of the rotor.627105313129. An electric machine according to claim 1 , wherein the rotor has a plurality of poles () defined by said permanent magnets () and disposed in the rotor body () around said axis of rotation claim 1 , and that said first channels ( claim 1 , ′) extend ...

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Номер записи: 31

06-03-2014 дата публикации

FAN AND ELECTRIC MACHINE ASSEMBLY AND METHODS THEREFOR

Номер: US20140062232A1

Автор: Benson Barry M., Cocks Rachele B.

Принадлежит: Regal Beloit America, Inc.

In one embodiment, a fan for a rotating device having a shaft with an axis of rotation is provided. The fan includes a base plate having a front surface, a rear surface, and a hub configured for coupling to the shaft. The fan further includes at least one blade projecting from the front surface of the base plate substantially perpendicular to the base plate. The base plate is contoured to direct air at an acute angle relative to the axis of rotation. 1. A fan for a rotating device having a shaft with an axis of rotation , said fan comprising:a base plate comprising a front surface, a rear surface, and a hub configured for coupling to said shaft; andat least one blade projecting from said front surface of said base plate substantially perpendicular thereto,wherein said base plate is contoured to direct air at an acute angle relative to said axis of rotation.2. The fan of claim 1 , further comprising at least two adjacent blades claim 1 , said base plate further comprising an aperture positioned between said adjacent blades claim 1 , wherein said fan is configured to direct air through said aperture.3. The fan of claim 2 , further comprising at least one rib projecting from said rear surface claim 2 , said at least one rib configured to generate an area of low pressure to draw air through said aperture.4. The fan of claim 2 , wherein said at least one rib is aligned with said at least one blade.5. The fan of claim 2 , further comprising a plurality of blades and a plurality of apertures positioned radially about said central hub claim 2 , each aperture of said plurality of apertures positioned between adjacent blades claim 2 , wherein said fan is configured to direct air through said apertures.6. The fan of claim 5 , wherein at least one of said apertures comprises a pair of opposed tapered edges.7. The fan of claim 1 , wherein said base plate further comprises a convex front surface and a concave rear surface claim 1 , said concave front surface and said convex rear ...

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Номер записи: 32

20-03-2014 дата публикации

Motor and Electronics Cooling System for a High Power Cordless Nailer

Номер: US20140076953A1

Автор: David J. Smith, Erik Ekstrom

Принадлежит: Black and Decker Inc

A battery powered tool includes a housing containing a motor assembly. A fan positioned in the housing is rotated by the motor assembly. The fan has a circular ring/body and further has multiple fan blades directly connected to the circular ring body. The circular ring/body defines a concave shaped surface having the fan blades directly connected to the concave shaped surface. A housing cover includes: first and second extending walls; a slot created between the first and second extending walls; and multiple air intake vents all positioned in a lower housing zone separated from an upper housing zone by the slot. An electronics module is positioned in the housing proximate to the housing cover lower housing zone such that air entering the intake vents passes only through the lower housing zone and past the electronics module to cool the electronics module before entering the fan.

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Номер записи: 33

27-03-2014 дата публикации

BRUSHLESS MOTOR AND ELECTRIC-POWERED TOOL

Номер: US20140084717A1

Автор: TANIMOTO Hideyuki, Yamaguchi Hayato

Принадлежит: HITACHI KOKI CO., LTD.

In a brushless motor, a rotor core is fixed to a shaft. Through holes are formed in the rotor core, and permanent magnets are inserted to be fixed in place in the through holes. A stator core is fixed to an outer circumferential surface of the rotor core such that the stator core faces the outer circumferential surface of the rotor core. Stator coils are provided on the stator core via insulators so as to configure magnetic flux generating portions. A cooling fan is provided in front of a stator which is configured by the stator core and the stator coils. Axial position of blades of the fan and axial positions of the rotor core and the permanent magnets partially overlap each other in their positions. 1. A brushless motor comprising:a shaft;a rotor provided on an outer circumference of the shaft;a stator having a magnetic flux generating portion which faces an outer circumferential surface of the rotor; anda fan configured to rotate together with the shaft at one end in an axial direction of the stator,wherein an axial position of a blade of the fan and an axial position of a permanent magnet of the rotor are close to or partially overlap each other.2. The brushless motor according to claim 1 , wherein:the rotor has a magnetic core having a substantially cylindrical shape and comprising a plurality of holes individually opened to at least one end face thereof;permanent magnets are held individually in the holes; andthe fan has projecting portions which fit in the holes.3. The brushless motor according to claim 1 , wherein:the rotor has a magnetic core having a substantially cylindrical shape; andthe axial position of the blade of the fan and an axial position of the magnetic core of the rotor are close to or partially overlap each other.4. The brushless motor according to claim 1 , wherein:the rotor has a magnetic core having a substantially cylindrical shape and comprising a plurality of holes individually opened to at least one end face thereof;the fan comprises ...

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Номер записи: 34

10-04-2014 дата публикации

SYSTEMS AND METHODS FOR COOLING A DRIVE END BEARING

Номер: US20140097715A1

Автор: Cawse Andrew, Hall Robert D., Hanchett Michael J.

Принадлежит: PRESTOLITE ELECTRIC INC.

Certain embodiments provide systems and methods for cooling a drive end bearing. The system may include an alternator including a drive end bearing, a drive end fan and a front housing face. The drive end fan may include a shaft aperture and auxiliary air flow inlet apertures positioned circumferentially around the shaft aperture. The front housing face may include auxiliary fins coupled to the drive end bearing. The auxiliary fins may protrude from the front housing face. The auxiliary fins may be arrayed axially on the front housing face. In various embodiments, the drive end fan is rotated to draw air through the auxiliary air flow inlet apertures and adjacent to at least a portion of auxiliary fins of the front housing face. The at least a portion of the auxiliary fins transfers heat from the drive end bearing to the air. 1. An alternator comprising:a drive end bearing;a drive end fan comprising a shaft aperture and a plurality of auxiliary air flow inlet apertures positioned circumferentially around the shaft aperture; anda front housing face comprising a plurality of auxiliary fins coupled to the drive end bearing, the plurality of auxiliary fins protruding from the front housing face, and the plurality of auxiliary fins arrayed axially on the front housing face.2. The alternator according to claim 1 , wherein the drive end fan is rotated to draw air through the plurality of auxiliary air flow inlet apertures and adjacent to at least a portion of the plurality of auxiliary fins of the front housing face.3. The alternator according to claim 2 , wherein the air drawn through the plurality of auxiliary air flow inlet apertures is ambient temperature air.4. The alternator according to claim 3 , wherein the at least a portion of the plurality of auxiliary fins transfers heat from the drive end bearing to the air.5. The alternator according to claim 1 , wherein each of the plurality of auxiliary air flow inlet apertures is substantially a same size.6. The alternator ...

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Номер записи: 35

01-01-2015 дата публикации

MOTOR FOR VEHICLE AND RAILWAY VEHICLE

Номер: US20150000549A1

Автор: NAGAYAMA Takashi, ONUMA Aki

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a motor for a vehicle includes a casing accommodating a rotor and a stator iron core inside thereof, and supporting each of both axial ends of the rotor shaft via a bearing, an air inlet port formed in a portion of the casing outside the bearing in the radial direction, and a fan provided between the rotor iron core and the bearing and rotating with the rotor shaft, wherein a portion of the casing positioned outside impellers of the fan in the axial direction forms a first housing and a second housing constituting a discharge channel, and the first housing includes a guide wall extending toward the outside in the radial direction, and the second housing includes a thinned wall portion located inside the guide wall in the axial direction to constitute the discharge channel between the thin wall portion and the guide wall. 1. A motor for a vehicle , comprising:a rotor shaft rotating around an axis and having opposed axial ends;a rotor iron core fixed to the rotor shaft;a stator iron core disposed radially outside of the rotor iron core;a casing accommodating the rotor iron core and the stator iron core therein, and supporting the opposed axial ends of the rotor shaft via bearings such that the rotor shaft is rotatable;an air inlet port formed in a portion of the casing radially spaced from the bearing; anda fan provided between the rotor iron core and the bearing and rotating with the rotor shaft to introduce outside air into the air inlet port, a portion of the casing positioned outside impellers of the fan in the axial direction forms a first housing and a second housing constituting a discharge channel through which the outside air is discharged,', 'the first housing comprises a guide wall extending in the radial direction, and', 'the second housing comprises a thin wall portion having a thinner wall thickness than that of adjacent portions of the second housing spaced from the guide wall in the axial direction to constitute the ...

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Номер записи: 36

07-01-2021 дата публикации

Eccentric mechanism and power tool provided with the eccentric mechanism

Номер: US20210001465A1

Автор: Gangyi Shen, Jeffrey L. Brown, Yingjie Chen

Принадлежит: Griot's Garage Inc

A power tool for use with a rotatable work element, having a housing with sidewall apertures, a motor located within the housing and operable to rotate a work element drive member, a central support member and an annular fan member. The central support member having an outer perimeter support wall portion with a fan member perimeter portion attached, each section of the fan member perimeter portion including a fan blade and a fan member aperture adjacent to the fan blade to direct air from within the housing through the fan member aperture toward the housing sidewall apertures. An eccentric member is mounted on the central support member for rotation therewith, and a counterweight is mounted on the central support member for rotation therewith.

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Номер записи: 37

06-01-2022 дата публикации

ELECTRIC WORK MACHINE

Номер: US20220006347A1

Автор: FUJII Fuminari

Принадлежит: MAKITA CORPORATION

An electric work machine includes a smaller motor. An electric work machine includes a motor and a housing accommodating the motor. The motor includes a stator and a rotor rotatable about a rotation axis. The stator includes a stator core, an insulator fixed to the stator core, a plurality of coils fixed to the insulator, and a terminal connected to each of the plurality of coils. The housing includes at least one first tab in contact with at least a part of a surface of the stator. The at least one first tab is at the same position as at least a part of the terminal in an axial direction parallel to the rotation axis. 1. An electric work machine , comprising: [ a stator core,', 'an insulator fixed to the stator core,', 'a plurality of coils fixed to the insulator, and', 'a terminal connected to at least one of the plurality of coils, and, 'a stator including'}, 'a rotor rotatable about a rotation axis; and, 'a motor including'}a housing accommodating the motor, the housing including at least one first tab in contact with at least a part of a surface of the stator, the at least one first tab being at the same position as at least a part of the terminal in an axial direction parallel to the rotation axis.2. The electric work machine according to claim 1 , whereinthe at least one first tab and the terminal are at different positions in a circumferential direction about the rotation axis.3. The electric work machine according to claim 1 , whereinthe surface of the stator includes an axially-facing surface facing in the axial direction, andthe at least one first tab has a first support surface in contact with the axially-facing surface.4. The electric work machine according to claim 3 , whereinthe axially-facing surface includes an end face of the stator core facing in the axial direction.5. The electric work machine according to claim 3 , whereinthe insulator includes a cover covering at least a part of an end face of the stator core facing in the axial direction, ...

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Номер записи: 38

06-01-2022 дата публикации

INVERTER INTEGRATED GAS SUPPLY DEVICE

Номер: US20220006355A1

Автор: IKEYA Nobuyuki, KUWATA Gen, Ohashi Satoru, Sasaki Yuji, TANIGUCHI Masaya

Принадлежит:

An inverter integrated gas supply device includes an electric motor and an inverter. The electric motor has a motor-side connection part that is configured to receive a drive current. The inverter has an inverter-side connection part that is connected to the motor-side connection part, and configured to supply the drive current to the motor-side connection part. The motor-side connection part includes a motor-side connector housing fixed to a motor case, a motor connector that is configured to receive the drive current, and a sealing member configured to seal a gap between the motor-side connector housing and the motor connector. 1. An inverter integrated gas supply device comprising:an electric motor having a motor casing and configured to drive a fluid machine that discharges air;an inverter having an inverter casing and configured to supply a drive current for controlling the number of rotations of the electric motor to the electric motor;a motor-side connection part attached to the motor casing and configured to receive the drive current; andan inverter-side connection part attached to the inverter casing, connected to the motor-side connection part, and configured to supply the drive current to the motor-side connection part, a motor-side connector housing fixed to the motor casing;', 'a motor connector disposed inside the motor-side connector housing and configured to receive the drive current from the inverter-side connection part; and', 'a sealing member configured to seal a gap between the motor-side connector housing and the motor connector., 'wherein the motor-side connection part includes2. The inverter integrated gas supply device according to claim 1 , wherein the sealing member is formed of an elastic resin material claim 1 , and wherein the motor connector is attached to the motor-side connector housing via the sealing member.3. The inverter integrated gas supply device according to claim 1 , wherein the sealing member is a loop-shaped packing ...

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Номер записи: 39

13-01-2022 дата публикации

COMPRESSOR FOR AN INTAKE SECTION OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE, INTERNAL COMBUSTION ENGINE FOR A MOTOR VEHICLE, AND MOTOR VEHICLE

Номер: US20220010723A1

Автор: Gordner Achim

Принадлежит:

A compressor for an intake section of an internal combustion engine of a motor vehicle includes an electric motor which has a stator and a rotor where the rotor is drivable by the stator and is rotatable about an axis of rotation relative to the stator. An impeller is drivable by the rotor to compress air which is flowable through the intake section and which is to be supplied to a combustion chamber of the internal combustion engine. The rotor is a brushless external rotor such that at least one length region of the stator is disposed in at least one length region of the rotor. 113.-. (canceled)14. A compressor for an intake section of an internal combustion engine of a motor vehicle , comprising:an electric motor which has a stator and a rotor, wherein the rotor is drivable by the stator and is rotatable about an axis of rotation relative to the stator; andan impeller which is drivable by the rotor to compress air which is flowable through the intake section and which is to be supplied to a combustion chamber of the internal combustion engine;wherein the rotor is a brushless external rotor such that at least one length region of the stator is disposed in at least one length region of the rotor.15. The compressor according to claim 14 , wherein the stator has a plurality of coils which are supplyable with electric current.16. The compressor according to claim 14 , wherein the rotor has a plurality of magnets.17. The compressor according to claim 14 , wherein the rotor is at least partially accommodated in a housing and is mounted rotatably on the housing via a bearing device.18. The compressor according to claim 17 , wherein the bearing device has at least one plain bearing and/or at least one ceramic rolling bearing.19. The compressor according to claim 17 , wherein the housing has a first receiving chamber in which the impeller is disposed and a second receiving chamber in which the bearing device is disposed claim 17 , wherein the rotor extends from the second ...

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Номер записи: 40

05-01-2017 дата публикации

TOTALLY-ENCLOSED MAIN MOTOR

Номер: US20170005545A1

Автор: Kaneko Kenta

Принадлежит: Mitsubishi Electric Corporation

A rotor shaft is configured hollow from an end face on a counter driving side to the front of a proximal end portion of a main plate of a cooling fan. Ventilation holes communicating with a hollow section are provided on a side surface of the rotor shaft. A labyrinth is provided between an end portion on the counter driving side of the main plate and a bracket. According to rotation of the cooling fan, cooling wind enters from the end face, passes through the hollow section, and passes through a ventilation path configured by the main plate and the bearing section via the ventilation holes. The cooling wind is exhausted via an exhaust port provided in the bracket. 1. A totally-enclosed main motor comprising:a stator;a rotor including a rotor core disposed on an inner circumferential side of the stator, a cooling fan attached to an end portion on a counter driving side of the rotor core, the cooling fan partitioning an inside and an outside of the main motor, and a rotor shaft attached to the rotor core, a hollow section being provided in the rotor shaft from an end face on the counter driving side to at least a front of an attachment place of the cooling fan in an axial direction, a ventilation hole communicating with the hollow section being provided on a side surface of the rotor;a frame enclosing the stator and the rotor;a first bracket connected to an end portion on a driving side of the frame;a second bracket connected to an end portion on the counter driving side of the frame, an exhaust port, at least a part of which is disposed further on an inner diameter side than an end portion on the counter driving side of a main plate of the cooling fan, being provided in the second bracket, the second bracket configuring a labyrinth between the second bracket and the end portion of the main plate;a first bearing section provided in the first bracket, the first bearing section supporting the rotor shaft; anda second bearing section provided in the second bracket, the ...

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Номер записи: 41

05-01-2017 дата публикации

Motor with Heat Dissipation Structure

Номер: US20170005546A1

Автор: CHOU Wen-San

Принадлежит:

A motor includes a housing, a front cover, a rotating shaft, and a cooling fan. The front cover is formed with multiple air guiding fins and multiple first inlet holes. The housing is formed with multiple air intercepting fins and multiple second inlet holes. In use, one portion of the air current generated by the cooling fan can be guided by the air guiding fins to pass through the first inlet holes to enter the motor's housing. Another portion of the air current can be intercepted by the air intercepting fins to pass through the second inlet holes to enter the motor's housing. The way of dissipating heat through multiple paths allows the heat generated in the motor to be dissipated more effectively, so that heat is not easy to accumulate in the motor. 1. A motor including a housing , a front cover , a rotating shaft , and a cooling fan , wherein the housing defines therein an inner space with a front opening and has a rear closure wall opposite to the front opening , the rear closure wall defining a central hole and a plurality of outlet holes; the front cover , which is substantially disk-shaped , closes the front opening of the housing and has a central hub defining a central hole and has a peripheral portion formed around the central hub; the rotating shaft is mounted across the inner space of the housing , the rotating shaft having a first end which is inserted through the central hole of the rear closure wall and having a second end which is inserted through the central hole of the hub of the front cover; the cooling fan is fixed to the second end of the rotating shaft , so that the cooling fan is rotated together with the rotating shaft; wherein the improvement comprises:the front cover is pressed to form a plurality of air guiding fins, which are bent from the peripheral portion of the front cover such that a plurality of first inlet holes are defined next to the corresponding air guiding fins, whereby one portion of a whirling, ongoing air current ...

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Номер записи: 42

05-01-2017 дата публикации

Motor with Heat Dissipation Structure

Номер: US20170005547A1

Автор: CHOU Wen-San

Принадлежит:

A motor includes a housing, a front cover, a rotating shaft, and a cooling fan. The front cover is formed with multiple air guiding fins and multiple inlet holes. The housing defines at least one communication hole at its surrounding wall. In use, a central portion of the air current generated by the cooling fan can be guided by the air guiding fins to pass through the inlet holes to enter the motor's housing. An outer portion of the air current can flow along the outer surface of the housing. The way of dissipating heat through multiple paths allows the heat generated in the motor to be dissipated more effectively, so that heat is not easy to accumulate in the motor, and thus the performance and service life of the motor can be increased. 1. A motor including a housing , a front cover , a rotating shaft , and a cooling fan , wherein the housing defines therein an inner space with a front opening and has a rear closure wall opposite to the front opening , the rear closure wall defining a central hole and a plurality of outlet holes; the front cover , which is substantially disk-shaped , closes the front opening of the housing and has a central hub defining a central hole and has a peripheral portion formed around the central hub; the rotating shaft is mounted across the inner space of the housing , the rotating shaft having a first end which is inserted through the central hole of the rear closure wall and having a second end which is inserted through the central hole of the hub of the front cover; the cooling fan is fixed to the second end of the rotating shaft , so that the cooling fan is rotated together with the rotating shaft; wherein the improvement comprises:the front cover is pressed to form a plurality of air guiding fins, which are bent from the peripheral portion of the front cover such that a plurality of inlet holes are defined next to the corresponding air guiding fins; the housing defines at least one communication hole at its surrounding wall; ...

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Номер записи: 43

07-01-2016 дата публикации

ELECTRIC MACHINE, IN PARTICULAR AN ENGINE

Номер: US20160006325A1

Автор: GRABNER CHRISTIAN, PEPELAR SAMIR

Принадлежит:

An electric machine, in particular an engine, has a housing with a bearing shield, a drive shaft, a fan which is coupled to the drive shaft, and a converter. The converter is arranged between the fan and the bearing shield. 19-. (canceled)10. An electric machine , comprising:a housing having an end plate;a drive shaft;a fan coupled to said drive shaft; anda converter disposed between said fan and said end plate of said housing.11. The electric machine according to claim 10 , wherein said converter has a converter housing.12. The electric machine according to claim 11 , wherein said converter housing is a substantially disk-shaped housing.13. The electric machine according to claim 11 , wherein said converter housing is spaced apart from said end plate with a gap formed therebetween.14. The electric machine according to claim 11 , wherein said converter housing is formed with a cutout and said drive shaft protrudes through said cutout.15. The electric machine according to claim 11 , wherein said converter housing has feet which are supported against the end plate and which space apart said converter housing from said end plate.16. The electric machine according to claim 10 , wherein said converter and said housing are thermally decoupled from one another.17. The electric machine according to claim 11 , which comprises a fan housing at least circumferentially surrounding said fan and said converter housing.18. The electric machine according to claim 17 , wherein said fan housing has guide devices on an inner side thereof.19. The electric machine according to claim 10 , configured as an electric motor. The invention relates to an electric machine, in particular a motor, which has a housing with an end plate, a drive shaft, a fan, which is coupled to the drive shaft, and a converter.Electric motors have already been used for a long time for a variety of purposes. However, in order to be able to use the large bandwidth of possible uses of electric motors, a converter is ...

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Номер записи: 44

04-01-2018 дата публикации

VEHICLE AC POWER GENERATOR

Номер: US20180006536A1

Автор: AKAMATSU Katsuya, HIGASHINO Kyoko, Tanaka Kazunori

Принадлежит: Mitsubishi Electric Corporation

A vehicle AC power generator includes a protection cover disposed at the rear side of a rear bracket included in a housing of the vehicle AC power generator, an attachment bolt that penetrates a through-hole formed in a bottom portion of a protection cover and is fixed to a portion at one axle-direction side of the housing, an output terminal bolt that extends from a rectifier, which rectifies AC electric power, toward the outside of one axle-direction side of the protection cover, and an insert coated conductor that is supported by the output terminal bolt and the attachment bolt and is provided at the rear surface of the protection cover. 1. A vehicle AC power generator comprising:a rotor that is fixed on a rotation axle pivotably supported by a housing and is disposed in the housing;a stator that has a stator iron core and a stator winding wound around the stator iron core and is supported by the housing in such a way as to surround the rotor;a rectifier that is disposed at the outside of one axle-direction side of the housing, that is fixed to the housing, and that rectifies AC electromotive force generated across the stator winding;a voltage adjuster that is disposed at the outside of one axle-direction side of the housing, that is fixed to the housing, and that adjusts the voltage value of the AC electromotive force to a specified value; anda resin-made protection cover that is produced in the shape of a bottomed tube having a bottom portion and a tubular circumferential wall portion and that is mounted on the housing in such a way as to cover the rectifier and the voltage adjuster, an attachment member that penetrates a through-hole formed in the bottom portion of the protection cover and is fixed to a portion at one axle-direction side of the housing,', 'an output terminal that extends from the rectifier toward the outside of one axle-direction side of the protection cover, and', 'an insert coated conductor that is supported by the output terminal and the ...

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Номер записи: 45

07-01-2021 дата публикации

Rotary electric machine for internal combustion engine and rotor thereof

Номер: US20210006114A1

Автор: Kazuo Fujimura, Ryouichi Tanaka, Takeshi Yanagisawa

Принадлежит: DensoTrim Corp, Honda Motor Co Ltd

A rotor has a rotor core. The rotor core has a cylindrical outer cylinder and a bottom plate that extends to one end of the outer cylinder. The bottom plate has a through hole penetrating the bottom plate. The rotor has a partition member. The partition member divides the through hole into a first region and a second region. The partition member crosses over the through hole. The rotary electric machine uses a flow in the first region and a flow in the second region.

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Номер записи: 46

07-01-2021 дата публикации

REEL MOTOR WITH CLOSED COOLING CIRCUIT

Номер: US20210006126A1

Автор: FEHRENBACH Johannes, Flaig Markus, HORNBERGER Jörg, SIEGER Tobias

Принадлежит:

A reel motor () for a driven conveyor roller has a stator () that is surrounded by a stator housing (). A rotor () drives a rotor shaft (). A tubular external housing () runs around the stator housing () at a distance in the circumferential direction. A cooling duct () is fluidically connected to an interior of the stator housing () holding the stator (). The cooling duct is formed between the external housing () and the stator housing (). An impeller wheel () is secured to the rotor shaft (). The impeller wheel generates a cooling air flow (K). The interior of the stator housing () and the cooling duct () determine a closed cooling circuit. The cooling air flow is guided through the closed cooling circuit. 115.-. (canceled)16. A reel motor for a driven conveyor roller comprising:a stator surrounded by a stator housing and a rotor driving a rotor shaft;a tubular external housing runs around the stator housing at a distance in the circumferential direction;a cooling duct, is fluidically connected to an interior of the stator housing holding the stator, the cooling duct is formed between the external housing and the stator housing; andan impeller wheel is secured to the rotor shaft, the impeller wheel generates a cooling air flow, the interior of the stator housing and the cooling duct determine a closed cooling circuit through which the cooling air flow is guided.17. The reel motor according to claim 16 , whereinthe stator housing, along its axial longitudinal direction, has two external sections and, lying axially in between, a directly adjoining middle section,the stator and the rotor are arranged in the middle section, and,in the external sections of the stator housing, respective openings leading to the cooling duct are provided for the fluidic connection.18. The reel motor according to claim 17 , whereinthe openings extend in the radial direction.19. The reel motor according to claim 17 , whereinthe impeller wheel is provided on the rotor shaft in an area facing ...

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Номер записи: 47

07-01-2021 дата публикации

MOTOR FAN AND GUARD FOR DIRECTING COOLANT AIR

Номер: US20210006128A1

Автор: Belley Richard A., Eason Richard L., Largent Michael L., Palmer Steven R., Sherman Jeffrey Scott

Принадлежит: NIDEC MOTOR CORPORATION

An electric motor assembly includes a stator, a rotor, a motor housing, a rotatable shaft, a radial fan, and an air scoop. The motor housing at least partly houses the stator and rotor and presents an exterior motor surface. The rotatable shaft is associated with the rotor for rotational movement therewith, with the rotatable shaft extending along a rotational axis. The radial fan is mounted on the rotatable shaft exteriorly of the motor housing and is rotatable with the shaft to direct airflow in a radially outward direction. The air scoop extends radially outwardly relative to the radial fan and axially to receive radial airflow from the radial fan and turn the airflow axially to flow along the exterior motor surface. The air scoop includes spaced apart axially extending airflow vanes to guide the airflow as the airflow is turned axially. 1. An electric motor assembly comprising:a stator;a rotor rotatable relative to the stator;a motor housing in which the stator and rotor are at least partly housed, with the motor housing presenting an exterior motor surface;a rotatable shaft associated with the rotor for rotational movement therewith, with the rotatable shaft extending along a rotational axis;a radial fan mounted on the rotatable shaft exteriorly of the motor housing and rotatable with the shaft to direct airflow in a radially outward direction; andan air scoop extending radially outwardly relative to the radial fan and axially to receive radial airflow from the radial fan and turn the airflow axially to flow along the exterior motor surface,said air scoop including spaced apart axially extending airflow vanes to guide the airflow as the airflow is turned axially.2. The electric motor assembly as claimed in claim 1 , further comprising:a fan guard mounted relative to the motor housing and covering at least part of the radial fan,said fan guard including the air scoop.3. The electric motor assembly as claimed in claim 2 ,said motor housing cooperating with the ...

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Номер записи: 48

07-01-2021 дата публикации

Eccentric Mechanism and A Power Tool

Номер: US20210006129A1

Автор: Brown Jeffrey Lee, Chen Yingjie

Принадлежит:

The invention discloses an eccentric mechanism, comprising an eccentric block assembly and a weight structure and a heat dissipating component. The weight structure is used to balance the eccentric block assembly when rotating, so that the shaft passage one and the shaft passage two provided on the eccentric block are located on the same axis when the eccentric block assembly is rotated. And the heat dissipating component is connected with the eccentric block assembly, and is provided with an fan structure comprising a plurality of fan blade structures driven by a drive mechanism, wherein the heat dissipating component rotates synchronously with a working part, to dissipate heat for structural units. 1. An eccentric mechanism , comprising:an eccentric block assembly;a weight structure, for balancing the eccentric block assembly while rotating, so that a shaft passage one and a shaft passage two provided on the eccentric block are located on the same axis when the eccentric block assembly is rotated; anda heat dissipating component, wherein the heat dissipating component is connected with the eccentric block assembly, and is provided with a fan structure comprising a plurality of fan blade structures driven by a drive mechanism, wherein the heat dissipating component rotates synchronously with a working part, to dissipate heat for structural units of a power tool.2. The eccentric mechanism according to claim 1 , wherein the heat dissipating component further comprises:a mounting structure, configured to mount the eccentric block assembly and the weight structure, comprising a mounting base, a first placement region disposed on the mounting base and a second placement region disposed on the mounting base, wherein the first placement region is configured to place the weight structure, and the second placement region is configured to place the eccentric block assembly; andwherein the fan structure, comprising the plurality of the fan blade structures, is disposed on the ...

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Номер записи: 49

07-01-2021 дата публикации

MOTOR CONTROLLER WITH INDUCTOR MOUNTED TRANSVERSE TO CONTROL BOARD

Номер: US20210006190A1

Автор: Largent Michael L., Palmer Steven R.

Принадлежит: NIDEC MOTOR CORPORATION

A motor control assembly is configured to operate an electric motor and includes a control housing and a controller. The control housing presents a controller chamber. The controller includes a control board mounted within the controller chamber. The controller further includes an inductor attached to the control housing and positioned within the controller chamber adjacent the control board. The inductor defines maximum first and second inductor dimensions measured along corresponding first and second directions parallel to a board plane and orthogonal to one another. The inductor further defines a maximum third inductor dimension measured along a third direction transverse to the board plane, with at least one of the first and second inductor dimensions being less than the maximum third inductor dimension. 1. A motor control assembly configured to operate an electric motor , said motor control assembly comprising:a control housing presenting a controller chamber; anda controller including a control board mounted within the controller chamber, said control board defining a board plane,said controller further including an inductor attached to the control housing and positioned within the controller chamber adjacent the control board,said inductor defining maximum first and second inductor dimensions measured along corresponding first and second directions parallel to the board plane and orthogonal to one another,said inductor further defining a maximum third inductor dimension measured along a third direction transverse to the board plane, with at least one of the first and second inductor dimensions being less than the maximum third inductor dimension.2. The motor control assembly as claimed in claim 1 ,said inductor including a toroidal metal core and windings wrapped around the core,said inductor defining an inductor axis about which the core extends,said inductor axis extending substantially parallel to the board plane.3. The motor control assembly as claimed in ...

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Номер записи: 50

03-01-2019 дата публикации

Power tool

Номер: US20190006909A1

Автор: Tatsuya Nagahama

Принадлежит: Makita Corp

Provided is a power tool whereby reduction is made for time-consuming effort and cost required in trouble, inspection and so forth related to a motor. A hammer drill, which is an example of a power tool, includes a plurality of coils, an insulator holding the plurality of coils, a terminal unit that is electrically connected to the plurality of coils and is attached to the insulator, a rotor that is rotatable with respect to the insulator, and a sensor board that detects rotation of the rotor and is attached to the terminal unit. The sensor board is detachable from the terminal unit, while the terminal unit is attached to the insulator.

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Номер записи: 51

02-01-2020 дата публикации

FAN MOTOR

Номер: US20200006997A1

Автор: CHOI Joongkeun, JUNG YoungGyu, KIM Taekyung, SONG Sungbae

Принадлежит:

The present embodiment comprise: an inner housing having an inner space formed therein; a rotation shaft assembly supported in the inner housing and having a rotor and a bearing mounted on a rotation shaft thereof; a stator disposed to surround the rotor in the inner housing; an impeller connected to the rotation shaft; an outer housing surrounding the outer periphery of the inner housing and having an inlet body, formed thereat, for guiding air to the impeller. The present embodiment is advantageous in that a heat dissipation vane is provided on the outer peripheral surface of the inner housing to guide air which passes between the inner housing and the outer housing after being suctioned into the inlet body, and thus when being guided by the heat dissipation vane, the air having been moved by the impeller can efficiently absorb heat transferred from the stator to the heat dissipation vane and more stable flow than when colliding against the stator and the rotor, and thus can be quickly discharged. 1. A fan motor comprising:an inner housing having an inner space defined therein;a rotation shaft assembly having a rotor and a bearing mounted on a rotation shaft, wherein the rotation shaft is supported in the inner housing;a stator disposed to surround the rotor in the inner housing;an impeller connected to the rotation shaft; andan outer housing for surrounding an outer periphery of the inner housing and an outer periphery of the impeller, wherein the outer housing has an inlet body for guiding air to the impeller,wherein a heat dissipation vane for guiding air sucked into the inlet body and then passed between the inner housing and the outer housing is formed on an outer circumference face of the inner housing.2. The fan motor of claim 1 , further comprising:an outer case having an outer space defined therein in which the outer housing is accommodated; andat least one PCB module disposed in the outer space to control the fan motor and in contact with an outer ...

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Номер записи: 52

02-01-2020 дата публикации

TWO-POLE TEFC ELECTRIC MOTOR AND AN ELECTRIC MOTOR DRIVE ARRANGEMENT

Номер: US20200007003A1

Автор: Aarnivuo Samu, Kosonen Jani, Mattila Simo

Принадлежит:

A two-pole TEFC (totally enclosed, fan-cooled) electric motor is concerned. A housing of the motor as an inner space, into which a stator assembly, a motor shaft and a rotor assembly fixed to and surrounding the motor shaft is fitted. A mounting foot structure radially protrudes from the outer surface of the housing for mounting the induction motor to a planar base structure. The mounting foot structure includes four mounting points defining corner points of a rectangular mounting footprint of the motor, such that the rectangular mounting foot print has two opposite sides parallel with the motor shaft. Furthermore, the mounting foot structure including at least an additional mounting point positioned on each side of the mounting footprint parallel with the motor shaft, between the corner points of the mounting footprint. 1. A two-pole TEFC (totally enclosed , fan-cooled) electric motor , comprising:a housing having an inner space;a mounting foot structure radially protruding from the outer surface of the housing for mounting said motor to a planar base structure;a stator assembly arranged annularly within the inner space of the housing;a motor shaft rotatably supported so as to concentrically extend through the stator assembly, anda rotor assembly fixed to and surrounding the motor shaft within the inner space, the rotor assembly being disposed concentrically with and inside the stator assembly,wherein the mounting foot structure comprises four mounting points defining corner points of a rectangular mounting footprint of the motor, such that the rectangular mounting foot print has two opposite sides parallel with the motor shaft,the mounting foot structure further comprising at least an additional mounting point positioned on each side of the mounting footprint parallel with the motor shaft, between the corner points of the mounting footprint, andwherein each of the mounting points are provided as openings, through which the motor is bolt-mountable to the base ...

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Номер записи: 53

02-01-2020 дата публикации

Motor with Inner Fan

Номер: US20200007008A1

Автор: HAGIYA Isao, Koyama Takayuki, SATO Misato, SUGIMOTO Kenichi

Принадлежит:

A motor with an inner fan includes a rotor rotating with a shaft, a stator opposing the outer peripheral surface of the rotor, an end ring connected to the rotor, stator wiring connected to the stator, a fan rotating with the shaft through a sleeve, a fan guide opposing the tip end of the blade outer periphery of the fan, and a frame storing the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring. The rotor includes an axial duct penetrating the rotor in the axial direction of the rotor and a radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor. The fan is an inner fan arranged inside the frame, the inner fan is of a diagonal flow type, and the discharge direction of the inner fan is the inward direction. 1. A motor with an inner fan , comprising:a rotor that rotates with a shaft;a stator that opposes the outer peripheral surface of the rotor;an end ring that is connected to the rotor;stator wiring that is connected to the stator;a fan that rotates with the shaft through a sleeve;a fan guide that opposes the tip end of the blade outer periphery of the fan; anda frame that stores the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring,wherein the rotor includes an axial duct and a radial duct, the axial duct penetrating the rotor in the axial direction of the rotor, the radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor,the fan is an inner fan that is arranged inside the frame,the inner fan is of a diagonal flow type, andthe discharge direction of the inner fan is the inward direction.2. The motor according to claim 1 ,wherein the fan guide is of a double structure,the outside diameter side of the fan guide is arranged along a tip end part of a blade outer periphery of the inner fan, andthe inside diameter side of the fan guide is arranged along an outside diameter side ...

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Номер записи: 54

08-01-2015 дата публикации

Motor having cooling means

Номер: US20150008771A1

Автор: Bok Seong CHOE, Chang Ho Kim, Yong Bok Lee

Принадлежит: Korea Advanced Institute of Science and Technology KAIST

A motor has a stator and a rotor rotating at the center of the stator, and the rotor includes a concave groove formed with a predetermined depth along the circumference of the rotor, and a plurality of blades formed at the concave groove to protrude therein and having a height not greater than the depth of the concave groove, wherein a flow channel is formed between the stator and the rotor along the length direction of the rotor so that air flows therein, and wherein when the rotor rotates, the plurality of blades guides an air flow to the flow channel so that the rotor is cooled.

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Номер записи: 55

20-01-2022 дата публикации

TURBO-BLOWER HAVING COMPLEX COOLING STRUCTURE FOR FUEL CELL

Номер: US20220021011A1

Автор: KIM Minsoo

Принадлежит: TURBOWIN CO., LTD.

The present invention relates to a turbo-blower having a complex cooling structure for a fuel cell, and more specifically, to a turbo-blower having a complex cooling structure for a fuel cell, the turbo-blower providing improved efficiency and durability of an impeller means by inhibiting a temperature rise through cooling of the impeller means that generates high-pressure air, by a cooling structure configured to simultaneously utilize both an air-cooling method and a water-cooling method. 11200{'b': '100', 'a blower casing means () that guides flow and discharge of suctioned air; and'}{'b': 200', '100', '100, 'an impeller means () that is positioned inside the blower casing means () and is coupled to the blower casing means () and generates inflow and flow of air,'}{'b': 100', '200, 'claim-text': [{'b': '110', 'an air suction duct () that allows air to be suctioned inside;'}, {'b': 120', '200', '200, 'an air flow guiding cover () that is formed to have a curved surface, is air-tightly coupled to the impeller means () at a neighboring position, and guides air suctioned inside to the impeller means ();'}, {'b': 130', '200, 'an air emitting duct () that causes air subjected to a pressure rise through the impeller means () to be discharged to a fuel cell stack;'}, {'b': 140', '100, 'a suctioned air securing portion () that causes an amount of air suctioned inside the blower casing means () to be secured;'}, {'b': 150', '200', '100', '200, 'an impeller means air-cooling portion () that cools the impeller means () by using flow of air suctioned inside the blower casing means () by the impeller means ();'}, {'b': 160', '200', '200', '161, 'an impeller means water-cooling unit () that is formed to neighbor the impeller means (), cools the impeller means () by using flow of cooling water supplied from outside, and has a cooling-water inflowing/circulating groove ();'}, {'b': 170', '110', '150', '120, 'a first air flow path () that is generated by the air suction duct (), ...

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Номер записи: 56

20-01-2022 дата публикации

HEATSINK CLAMP FOR MULTIPLE ELECTRONIC COMPONENTS

Номер: US20220021273A1

Автор: Belley Richard A., Largent Michael L., Skinner James L.

Принадлежит: NIDEC MOTOR CORPORATION

An electric motor assembly includes a stator, a rotor, a motor housing, a rotatable shaft, a radial fan, and an air scoop. The motor housing at least partly houses the stator and rotor and presents an exterior motor surface. The rotatable shaft is associated with the rotor for rotational movement therewith, with the rotatable shaft extending along a rotational axis. The radial fan is mounted on the rotatable shaft exteriorly of the motor housing and is rotatable with the shaft to direct airflow in a radially outward direction. The air scoop extends radially outwardly relative to the radial fan and axially to receive radial airflow from the radial fan and turn the airflow axially to flow along the exterior motor surface. The air scoop includes spaced apart axially extending airflow vanes to guide the airflow as the airflow is turned axially. 1. A clamp assembly operable to engage at least three heat-generating electrical components arranged side-by-side and clamp the electrical components relative to a heat sink , said clamp assembly comprising:a clamp bar and a fastener to secure the clamp bar to the heat sink,said clamp bar including at least three spaced apart projections configured to be located in engagement with the respective electrical components,said clamp bar including a clamp margin and a backing flange that supports the clamp margin, with the clamp margin defining the projections and presenting a clamping surface,said clamp bar presenting a slot positioned between a spaced apart pair of the projections and defining respective clamp bar sections on opposite sides thereof,said slot extending through the flange to present flange sections separated by the slot and associated with respective clamp bar sections,said slot being spaced from the clamping surface, with the slot permitting the clamp bar sections to shift relative to one another and thereby facilitate clamping engagement of the projections with the electrical components.2. The clamp assembly as ...

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Номер записи: 57

10-01-2019 дата публикации

GAS TURBINE ENGINE WITH MICROCHANNEL COOLED ELECTRIC DEVICE

Номер: US20190010824A1

Автор: Snyder Douglas J.

Принадлежит:

A gas turbine engine includes an electrical device and a microchannel cooling system in communication with the electrical device to remove heat. 1. A gas turbine engine for use in an aircraft , the engine comprisinga low pressure spool including a fan arranged at a forward end of the engine, a low pressure turbine rotor arranged at an aft end of the engine, a low pressure drive shaft extending along an axis and rotationally coupling the fan to receive driven rotation from the low pressure turbine rotor,a high pressure spool including a compressor rotor, a high pressure turbine rotor, and a high pressure drive shaft extending along the axis and rotationally coupling the compressor rotor to receive driven rotation from the high pressure turbine rotor, andan electric device including a stator having an annular core, a rotor rotationally coupled to the low pressure drive shaft and disposed about the stator in electromagnetic communication, and a microchannel cooling system arranged radially inward of the stator in thermal communication with the annular core to pass coolant for removing heat from the stator.2. The gas turbine engine of claim 1 , wherein the microchannel cooling system includes a housing and a network of micropassageways within the housing.3. The gas turbine engine of claim 2 , wherein the micropassageways include inlet passageways for receiving coolant and outlet passageways for discharging heated coolant.4. The gas turbine engine of claim 3 , wherein each inlet passageway is connected with at least one of the outlet passageways by at least one transfer section to pass coolant in thermal communication with the annular core.5. The gas turbine engine of claim 3 , wherein the inlet and outlet passageways are arranged in alternating sequence in the circumferential direction.6. The gas turbine engine of claim 1 , wherein the stator includes electrical windings disposed radially outward of the annular core.7. The gas turbine engine of claim 1 , wherein the ...

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Номер записи: 58

12-01-2017 дата публикации

ELECTRICAL MACHINE HAVING A FRAME AND SLEEVE

Номер: US20170012487A1

Автор: Brandl Konrad, DEEG Christian, DORR GERHARD, EICHINGER BENJAMIN, GREUL WOLFGANG JOHANN, Hofmann Jürgen, Joseph Eric, RESSEL EKKEHARD, Scharf Uwe, SCHERER MATHIAS, STEGHERR MICHAEL, Weiss Sebastian, Werner Ulrich

Принадлежит: SIEMENS AKTIENGESELLSCHAFT

The invention relates to an electrical machine () comprising a rotor () which is rotatably mounted around a rotation axis () extending in the axial direction () in bearing devices (), a stator () having two axial ends, an air gap between rotor and stator, an interior chamber () encompassing the stator () and rotor (), a sleeve () encompassing a first part () which encloses the interior chamber (), a frame () having a first () and a second () longitudinal support (), a first () and a second () cross-support, and a dividing device () on the frame (). The stator () comprises a fastening device () for connection to the frame () and the dividing device () can make the interior chamber accessible from the outside in a plane parallel to the frame (). The invention further relates to a collection, to a frame (), to a sleeve (), or to a service or production method of such an electrical machine (). 136.-. (canceled)37. An electrical machine , comprising:a frame;a rotor mounted for rotation about a rotational axis which extends in an axial direction; anda stator configured to extend along the rotational axis from a first axial end to a second axial end of the stator, said stator interacting with the rotor across an air gap during operation of the electrical machine; said stator including a fastening device configured to secure the stator to the frame and including an adjustment device for adjusting the air gap by changing a position of the stator relative to the frame, said fastening device including a stiffening element extending in the axial direction for stiffening the stator, said stiffening element including a fastening unit of the fastening device and provided for guiding a coolant out of the stator in a radial direction perpendicular to the axial direction.38. The electrical machine of claim 37 , wherein the stiffening element extends within a lateral area of the stator as viewed in the axial direction.39. The electrical machine of claim 37 , wherein the frame includes ...

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Номер записи: 59

12-01-2017 дата публикации

IMotor with Heat Dissipation Structure

Номер: US20170012499A1

Автор: Wen-San Chou

Принадлежит: Individual

A motor includes a housing, a front cover, a rotating shaft, and a cooling fan. The front cover is provided with multiple air guiding fins and defines multiple inlet holes. The housing defines at least one communication hole at its surrounding wall. In use, a central portion of the air current generated by the cooling fan can be guided by the air guiding fins to pass through the inlet holes to enter the motor's housing. An outer portion of the air current can flow along the outer surface of the housing. The way of dissipating heat through multiple paths allows the heat generated in the motor to be dissipated more effectively, so that heat is not easy to accumulate in the motor, and thus the performance and service life of the motor can be increased.

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Номер записи: 60

15-01-2015 дата публикации

POWER TOOL HAVING CIRCUIT BOARD

Номер: US20150015094A1

Автор: HAGA Hiroshi, Hashimoto Hideyuki, TANIMOTO Hideyuki

Принадлежит:

A power tool includes a housing, a motor, an output unit, and a circuit board unit. The motor is accommodated in the housing and has a rotational axis extending in a top-bottom direction. The output unit is disposed above the motor and extends in a front-rear direction. A power cable is configured to be connected to a power source and is connected to the circuit board unit. The circuit board unit is accommodated in the housing. The circuit board unit comprises a switching element for driving the motor, and a rectifying device configured to rectify an alternating current from the power source to a direct current. The circuit board unit is disposed below the motor and extends in the front-rear direction in the housing. 1. A power tool comprising:a housing;a motor accommodated in the housing and having a rotational axis extending in a top-bottom direction;an output unit disposed above the motor and extending in a front-rear direction; anda circuit board unit to which a power cable configured to be connected to a power source is connected, the circuit board unit being accommodated in the housing,wherein the circuit board unit comprises a switching element for driving the motor, and a rectifying device configured to rectify an alternating current from the power source to a direct current, and the circuit board unit is disposed below the motor and extends in the front-rear direction in the housing.2. A power tool comprising:a housing comprising a motor housing, a handle housing disposed rearward of the motor housing, and a connected portion connecting the motor housing to the handle housing, the motor housing accommodating therein a motor and extending in a top-bottom direction, the handle housing extending in the top-bottom direction;an output unit disposed above the motor and extending in a front-rear direction; anda circuit board unit to which a power cable configured to be connected to a power source is connected, the circuit board unit being disposed below the motor, ...

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Номер записи: 61

11-01-2018 дата публикации

FAN-COOLED ELECTRIC MACHINE

Номер: US20180013333A1

Автор: MATTA Pierre

Принадлежит: MOTEURS LEROY-SOMER

Electric machine including a rotor cooled by a simple disc base fan including blades, preferably of one piece with the disc, and a booster attached to the simple disc fan, the booster preferably including a disc positioned facing that of the base fan. 112-. (canceled)13. An electric machine including a rotor cooled by a single-plate base ventilator including blades , and a booster attached to the single-plate ventilator , the booster including a plate positioned opposite that of the base ventilator , wherein the booster includes blade extensions positioned radially as a continuation of the blades of the base ventilator.14. The machine as claimed in claim 13 , the blade extensions consisting of a single piece with the plate of the booster.15. The machine as claimed in claim 13 , the base ventilator being made of metal.16. The machine as claimed in claim 13 , the booster being made of plastic.17. The machine as claimed in claim 13 , the blade extensions being organized to be mechanically hooked to the blades.18. The machine as claimed in claim 13 , the blades each including a notch and the blade extensions each including a corresponding hook.19. The machine as claimed in claim 13 , the blade extensions covering the end parts of the blades over the majority of the height of the blades.20. The machine as claimed in claim 13 , the blade extensions having indentations and the blades being positioned in the thickness of these indentations.21. The machine as claimed in claim 13 , the blade extensions each extending towards the center by a rib claim 13 , the height of which decreases as it approaches the center.22. The machine as claimed in claim 13 , the blades consisting of a single piece with the plate.23. A method for increasing the cooling power of a base ventilator claim 13 , of an electric machine claim 13 , including the step of fixing claim 13 , on the ventilator claim 13 , a booster including a plate positioned opposite that of the base ventilator in order to form ...

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Номер записи: 62

10-01-2019 дата публикации

MOTOR ROTOR HOLDER AND MOTOR

Номер: US20190013717A1

Автор: FAN Wenshou, Li Jinhui, LIU Junwei

Принадлежит: BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.

A motor rotor holder and a motor are provided according to the present application. The motor rotor holder is rotatably supported in a housing of the motor, and the motor rotor holder includes: a first cooling channel which allows interior spaces at two axial sides of a rotor in the housing to be in communication with each other so as to direct a first cooling medium through the first cooling channel; and a second cooling channel which is in communication with an exterior of the housing so as to direct a second cooling medium through the second cooling channel. The first cooling channel and the second cooling channel are provided to have a common heat conduction portion, and the first cooling medium is allowed to exchange heat with the second cooling medium via the common heat conduction portion. 1. A motor rotor holder rotatably supported in a housing of a motor , comprising:a first cooling channel which allows interior spaces at two axial sides of a rotor in the housing to be in communication with each other for directing a first cooling medium through the first cooling channel; anda second cooling channel which is in communication with an exterior of the housing for directing a second cooling medium through the second cooling channel,wherein the first cooling channel and the second cooling channel are provided to have a common heat conduction portion, and the first cooling channel is allowed to exchange heat with the second cooling channel via the common heat conduction portion, and heat absorbed by the first cooling medium is transferred from an interior of the housing to the second cooling medium and the heat is discharged to the exterior of the housing.2. The motor rotor holder according to claim 1 , wherein the motor rotor holder comprises an inner cylinder claim 1 , an outer cylinder and an intermediate cylinder located between the inner cylinder and the outer cylinder claim 1 ,wherein the intermediate cylinder is arranged separately from the inner cylinder ...

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Номер записи: 63

14-01-2021 дата публикации

Motor sleeve and motor device

Номер: US20210013766A1

Автор: Chen-Shi CHOU, Zong-Lin LI

Принадлежит: Chicony Power Technology Co Ltd

A motor sleeve is applied to a motor housing and a motor driver housing. The motor sleeve includes a sleeve base, a second fixing structure, a second coupling structure, a plurality of base fins, a sleeve chassis, a plurality of chassis fins, and a third fixing structure. The second fixing structure is disposed on an inner surface of the sleeve base and correspondingly fixed to a first fixing structure of the motor housing. The sleeve base is installed on a lateral portion of the motor housing. The base fins are separately disposed on an outer surface of the sleeve base and corresponding to a first coupling structure of the motor driver housing. The motor driver housing is coupled to the sleeve base by the first and second coupling structures. The third fixing structure is correspondingly fixed to a fourth fixing structure of the motor housing.

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Номер записи: 64

14-01-2021 дата публикации

SYSTEM, KIT, AND METHOD FOR DISSIPATING HEAT GENERATED BY A MOTOR ASSEMBLY

Номер: US20210013777A1

Автор: AO Jiyuan, BEI Shimeng, Wu Xiaolong, WU Xumin, YU Qiang

Принадлежит:

A system and kit for dissipating heat generated by a motor assembly and methods for manufacturing and using same. The motor assembly includes a housing that defines an internal chamber. The internal chamber communicates with an air inlet and an air outlet each being formed in the housing, and can at least partially receive motor inner workings. A pump assembly can be included in the internal chamber for generating an air flow during operation of the motor assembly. The pump assembly can draw air into the internal chamber via the air inlet, generating an air flow within the internal chamber. The air drawn into the internal chamber is applied to the motor inner workings, and the air heated by the motor inner workings is expelled from the internal chamber via the air outlet. Thereby, the air flow advantageously can cool the motor assembly as the air traverses the internal chamber. 120-. (canceled)21. An unmanned aerial vehicle (UAV) , comprising:a UAV body having a first housing for accommodating a control device for controlling operation of the UAV, the first housing having a central air inlet for drawing air from an external environment of the UAV;a plurality of motor assemblies for providing propulsion forces for moving the UAV;a plurality of motor arms for coupling the motor assemblies and the UAV body and for supporting the motor assemblies, the motor arms being hollow and having a duct-type structure,wherein each motor assembly includes a motor installation base and a motor installed on the motor installation base, the motor comprising a second housing and motor inner workings hosted in the second housing, the second housing comprising an air inlet and air outlet, andwherein the first housing, the motor arms, and the second housing of each motor assembly are coupled in such way that the air drawn from the external environment sequentially passes by the control device in the first housing to dissipate heat from the control device, passes through an air transport ...

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Номер записи: 65

14-01-2021 дата публикации

SLIP RING UNIT WITH ACTIVE COOLING SYSTEM

Номер: US20210013779A1

Автор: BINDER HERBERT

Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A slip ring unit for an electrical machine includes a brush holding apparatus including brush boxes configured to receive slip ring brushes. For realizing an effective cooling of the slip ring brushes, the brush holding apparatus has cooling air lines for the targeted supply of cooling air to the slip ring brushes, and cooling air ducts which each have an air inlet opening for collecting cooling air and an air outlet opening for supplying the cooling air which is collected in the cooling air ducts to the slip ring brushes via the cooling air lines which are connected to the air outlet openings. 19.-. (canceled)10. A slip ring unit for an electrical machine , said slip ring unit comprising:a brush holding apparatus including brush boxes configured to receive slip ring brushes, said brush holding apparatus including cooling air lines for targeted supply of cooling air to the slip ring brushes, and cooling air ducts, said cooling ducts each having an air inlet opening for collecting cooling air and an air outlet opening, said air outlet openings of the cooling ducts communicating with the cooling air lines for the targeted supply of cooling air, collected in the cooling air ducts, via the cooling air lines to the slip ring brushes, said cooling air ducts each forming part of a brush bridge which includes a first subregion for electrical wiring of a corresponding one of the slip ring brushes, and a second subregion which acts as the cooling air duct, said brush bridge configured to form the air outlet openings for connection of the cooling air lines to the slip ring brushes; anda fan provided as an active cooling system to generate an air volume flow to cool the brush holding apparatus.11. The slip ring unit of claim 10 , further comprising supply air ducts which are supplied via separate cooling air openings in the form of an air inlet opening on the slip ring unit.12. The slip ring unit of claim 10 , wherein the fan is provided to substantially dispel heated air and ...

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Номер записи: 66

18-01-2018 дата публикации

Non-Integrated Motor Fan in Kitchen Appliance

Номер: US20180014696A1

Автор: Williams Brian P.

Принадлежит:

A blender for blending foodstuff comprises a base and a blender jar removably mountable to the base. The base encloses a motor and a cooling fan. The cooling fan is selectively operable and positioned to blow or draw air across at least a portion of the motor. The blender jar has one or more selectively rotatable blades. The motor is selectively operable to rotate the blender jar blades. The selective operation of the motor is independent of the selective operation of the fan, such that (1) the fan is operable when the motor is not operating, (2) the motor is operable when the fan is not operating, and (3) the fan and the motor are operable at different respective speeds at a same time. 1. A blender for blending foodstuff , the blender comprising:a base enclosing a motor and a cooling fan, the cooling fan selectively operable and positioned to blow or draw air across at least a portion of the motor;a blender jar removably mountable to the base, the blender jar having one or more selectively rotatable blades;wherein the motor is selectively operable to rotate the blender jar blades;wherein the selective operation of the motor is independent of the selective operation of the fan, such that (1) the fan is operable when the motor is not operating, (2) the motor is operable when the fan is not operating, and (3) the fan and the motor are operable at different respective speeds at a same time.2. The blender of claim 1 , further comprising a thermostat for measuring a temperature of the motor;wherein the fan operates when the measured temperature is above a first predetermined temperature limit; andwherein the fan does not operate when the measured temperature is below a second predetermined temperature limit.3. The blender of claim 2 , wherein the first predetermined temperature limit is not equal to the second predetermined temperature limit.4. A method of operating a blender for blending foodstuff claim 2 , the method comprising: a base enclosing a motor and a cooling ...

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Номер записи: 67

21-01-2016 дата публикации

ELECTRIC MACHINE HAVING A COUPLING FLANGE

Номер: US20160020665A1

Автор: VOHLGEMUTH Patrick

Принадлежит:

The present invention concerns an electric machine (1), in particular an alternator, intended to be coupled to a driving or driven machine, in particular a heat engine, comprising:—a coupling flange () for coupling to the driving or driven machine, housing a fan () driven by the rotor, said flange comprising:—a rear portion () linked to a fixed portion () of the electric machine,—an interfacing front portion () interfacing with the driving or driven machine, said interfacing front portion being mounted on the rear portion (), the front portion () having a central opening, the fan having a diameter greater than that of the central opening,—at least one air deflector secured to the flange ().

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Номер записи: 68

03-02-2022 дата публикации

ADAPTOR WITH IMPROVED AIRFLOW

Номер: US20220037957A1

Автор: AGRAWAL Himanshu, Ali Abbas Haider, Kakade Abhishek, Riley Mark Jason, Rolston Robert Mitchell

Принадлежит: Cummins Generator Technologies Limited

An adaptor is disclosed for connecting a rotating electrical machine to a prime mover . The adaptor comprises at least one air outlet. The adaptor is arranged to provide an increase in a cross-sectional area of air flow towards the outlet. In this way part of the dynamic pressure can be converted into additional static pressure rise through steady expansion of the air flow cross-section. This in turn may help to improve the overall amount of cooling air passing through the machine for a given fan input power. 138-. (canceled)39. An adaptor arranged to connect a rotating electrical machine to a prime mover , the adaptor comprising:a plurality of side walls;a top wall; and each of the plurality of side walls, the top wall, and the bottom wall includes an air outlet,', 'each air outlet is provided in a first part of the corresponding wall, in a direction of air flow,', 'a second part of at least one of the plurality of side walls, the top wall, and the bottom wall has an aperture which is blocked off using a removable cover;', 'the removable cover is removable to allow an operator access to rotating parts;', 'the removable cover is arranged to direct air flow to the air outlet in a subsequent wall in the direction of the airflow, and', 'the removable cover is arranged so as to increase a cross-sectional area of air flow towards the air outlet of the subsequent wall in the direction of the airflow., 'a bottom wall, wherein'}40. An adaptor according to claim 39 , wherein each of the walls functions as a partial volute.41. An adaptor according to claim 39 , wherein each of the walls is arranged to reduce re-entrainment of air back into the adaptor.42. An adaptor according to claim 39 , wherein the adaptor is arranged to house a fan.43. An adaptor according to claim 42 , wherein the increase in the cross-sectional area of the air flow is achieved by increasing distance between a perimeter of the fan and a wall of the adaptor.44. An adaptor according to claim 39 , wherein ...

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Номер записи: 69

18-01-2018 дата публикации

ROTARY ELECTRICAL MACHINE PROVIDED WITH A PULLEY FOR RECEIPT OF A BELT, AND WITH A DEVICE FOR REGULATION OF THE TENSION OF THE BELT

Номер: US20180019638A1

Автор: BEN-OMRANE Ryadh, MONTEIL Christophe, ROULEAU Blaise

Принадлежит:

The rotary electrical machine comprises, in front, a pulley () secured to a shaft () of a rotor () passing through the front bearing () of a housing. The bearing includes a base, having a nose () for mounting a front ball bearing () for rotating the shaft (), and air inlets () defined by arms belonging to an outwardly opening area connecting a peripheral strip of material from the base to the nose () in order to shift the nose () toward the front in accordance with the central body of a device () for adjusting the tension of a belt received in the groove () of the pulley () and attached onto the housing (). The adjustment device () comprises at least one idler () for tensioning the belt and a central opening () enabling passage of air through the air inlets (). 1331209112381382818187915138281823813828138282381818100313111002002011021518238100aaab. Rotary electrical machine comprising at the front a pulley () which is provided with a groove () , and is integral with a rotor () shaft () passing through the front bearing () of a housing configured to be secured on a fixed part , the said bearing () comprising a base ( , , , ) provided with a nose () for fitting of a front ball bearing () for rotation of the shaft () , and air inlet openings () delimited by arms ( , ) which connect the nose () to a peripheral strip of material () of the base , wherein the arms ( , ) belong to an area ( , ) which widens towards the exterior , connecting the strip of material () to the nose () for offsetting of the nose () at the front , further comprising a device () for regulation of the tension of a belt , said belt being received in the groove () in the pulley () , and said device being secured on the housing ( , ) , wherein the regulation device () comprises at least one roller ( , ) for tensioning of the belt , and a central opening () which permits passage of the air through the air inlet openings () , and wherein the offsetting of the nose () at the front relative to the strip of ...

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Номер записи: 70

18-01-2018 дата публикации

BLADE FOR A FAN

Номер: US20180019643A1

Автор: Brockschmidt Mario, Höhner Rene, Kocdemir Bora, Litinsky Alexander, Mashkin Andrey, Pohlmann Friedhelm, Schmidt Guido, Staubach Christian, Voss Simon

Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A blade for a fan that can be arranged on a rotor shaft of a rotor of a rotating electric machine, in particular a generator, wherein the blade is at least partially formed from a fiber composite material that has a polymer matrix with mineral fibers embedded therein. A method for producing a blade for a fan arrangeable on a rotor shaft of a rotor of a rotating electrical machine, in particular a generator, wherein the blade is produced using an injection molding method, and wherein a fiber composite material of a polymer matrix with mineral fibers embedded therein is used as injection molding material. 1. A blade for a fan arrangeable on a rotor shaft of a rotor of a rotating electrical machine , comprising:a fiber composite material which forms the blade at least in part,wherein the fiber composite material comprises a polymer matrix with mineral fibers embedded therein.2. The blade as claimed in claim 1 ,wherein the mineral fibers take the form at least in part of basalt fibers.3. The blade as claimed in claim 1 ,wherein the blade takes the form of a rotor blade or a guide vane.4. A fan for cooling a rotating electrical machine claim 1 , wherein the fan is arrangeable on a rotor shaft of a rotor of the rotating electrical machine claim 1 , the fan comprising:at least one blade ring arrangeable rotationally on the rotor shaft and formed of blades,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the blades are configured according to .'}5. A method for producing a blade for a fan arrangeable on a rotor shaft of a rotor of a rotating electrical machine claim 1 , the method comprising:producing a blade using an injection molding method, andusing a fiber composite material comprising a polymer matrix with mineral fibers embedded therein as injection molding material.6. The method as claimed in claim 5 ,wherein the mineral fibers used are at least in part basalt fibers.7. The blade as claimed in claim 1 ,wherein the rotating electrical machine comprises a ...

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Номер записи: 71

17-01-2019 дата публикации

Rotating electrical machine

Номер: US20190020243A1

Автор: Masao Akiyoshi, Yuzuru Kobayashi

Принадлежит: Mitsubishi Electric Corp

Radial direction outer side sizes of a first rectifying unit, a circuit board, and a second rectifying unit configuring a rectifying device are disposed so as to be sequentially smaller in a direction away from a frame of a rotating electrical machine main body, and at predetermined intervals, a cover covering the rectifying device has a cover end wall portion, a cover outer wall portion, and a cover intermediate portion, an inner peripheral side inlet portion is formed in the cover end wall portion, an outer peripheral side inlet portion is formed in the cover intermediate portion, and the outer peripheral side inlet portion is formed of an axial direction covering portion, and a radial direction covering portion that connects the axial direction covering portion and an outer peripheral portion of the cover end wall portion.

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Номер записи: 72

24-01-2019 дата публикации

Air circulation and ventilation apparatus for food processing machine

Номер: US20190021551A1

Автор: Jiangang Guo, Qidong MO

Принадлежит: Guangdong Xinbao Electrical Appliances Holdings Co Ltd

An air circulation and ventilation apparatus for a food processing machine ( 70 ), and the air circulation and ventilation apparatus comprises: a motor ( 10 ) and a fan ( 30 ), in which the motor ( 10 ) is used for driving an agitating or pulverizing assembly and is arranged within a base of the machine, and a body ( 60 ) of the machine is disposed outside the base, and the gap between the body ( 60 ) and the outer side wall of the base forms an air inlet passage; the fan ( 30 ) is equipped with a driving motor and is arranged within the base, and under the effect of the fan ( 30 ), airflow enters the air inlet passage by means of an air inlet port ( 22 ) on the base and flows through the motor ( 10 ) within the base and is discharged from an outlet port ( 23 ) on the base. By independently and separately providing the motor ( 10 ) for driving the agitating or pulverizing assembly of the food processing machine ( 70 ) and the fan ( 30 ) for ventilation, the load on the motor ( 10 ) and the vibration of the food processing machine ( 70 ) maybe be reduced, while also reducing noise; the fan ( 30 ) drives the operation thereof, and can independently adjust the rotational speed thereof according to ventilation needs, thus preventing waste of resources; further, when an operation problem occurs with the motor ( 10 ), the motor ( 10 ) may be effectively cooled down, thus maintaining good heat-dissipation efficiency, thereby prolonging the service life of the food processing machine ( 70 ).

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Номер записи: 73

16-01-2020 дата публикации

Cooling Device for an Electric Motor and Electric Motor with Cooling Device

Номер: US20200021167A1

Автор: Frieder Lörcher, Lothar Ernemann

Принадлежит: Ziehl Abegg SE

The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.

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Номер записи: 74

16-01-2020 дата публикации

MOTOR, BLOWER, AIR CONDITIONER, AND METHOD OF PRODUCING MOTOR

Номер: US20200021168A1

Автор: ASO Hiroki, OYA Junichiro, SHIMOKAWA Takaya, TAKAHASHI Ryogo

Принадлежит:

A motor includes a rotor, a stator assembly, a heat radiation member to radiate heat of the stator assembly, and a resin integrating the heat radiation member with the stator assembly. 1. A motor comprising:a rotor;a stator assembly including a stator and a printed circuit board;a heat radiation member to radiate heat of the stator assembly; anda resin integrating the printed circuit board with the stator and integrating the heat radiation member with the stator assembly.2. The motor according to claim 1 , wherein the heat radiation member touches the stator assembly.3. The motor according to or claim 1 , wherein the stator assembly includesa drive element fixed on a surface of the printed circuit board and to control rotation of the rotor.4. The motor according to claim 3 , whereinthe drive element is fixed on the surface of the printed circuit board so as to face the stator.5. The motor according to claim 3 , wherein the stator assembly includes a heat radiation auxiliary member arranged between the heat radiation member and the printed circuit board claim 3 , the heat radiation auxiliary member transmitting heat of the stator assembly to the heat radiation member.6. The motor according to claim 3 , whereinthe stator assembly includes a first metallic wiring pattern formed on a first surface of the printed circuit board and a second metallic wiring pattern formed on a second surface opposite to the first surface,the printed circuit board has a through hole, andthe first and second metallic wiring patterns are connected to each other with the through hole in between.7. The motor according to claim 3 , wherein the printed circuit board is integrated with the heat radiation member by the resin.8. The motor according to claim 3 , wherein the stator assembly includes a stator core and an insulator insulating the stator core electrically.9. The motor according to claim 8 , wherein the insulator includes a fixing part fixing the heat radiation member.10. The motor ...

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Номер записи: 75

21-01-2021 дата публикации

STATOR FOR AN ELECTRIC MOTOR AND COOLING THEREOF

Номер: US20210021176A1

Автор: FOLEY IAN, Kawamoto Michio, Ogilvie Martin, Sakurai Yoshitoshi, Williamson Rob

Принадлежит:

A stator and a rotor suitable for use in an electric motor or generator. The stator comprises a plurality of stator cons and a support for holding the coils around a rotor of the motor. A cylindrical sleeve is mounted radially inwardly on the support to form a barrier in use between cooling fluid passing over the coils and a rotor located within the stator. The rotor comprises a hub, a plurality of rotor segments, and a plurality of permanent magnets. The segments are arranged around the hub in a ring, with the permanent magnets disposed between the segments. A radially outwardly facing exposed surface of each magnet is spaced radially inwardly from an outer cylindrical profile defined by the segments. 1. A stator for an electric motor , the stator comprising:a plurality of stator coils;a support for holding the coils around a rotor rotatable about a central axis of the motor;a cylindrical sleeve mounted radially inwardly of the support to form a barrier in use between cooling fluid passing over the coils and the rotor located within the stator; anda housing which extends around the support, wherein a fluid path is defined between the support and the housing for receiving cooling fluid, the fluid path including a plurality of channel sections which extend in a substantially axial direction over the length of the support,wherein the support defines holes for receiving axially extending rods that couple the support to the housing, and the holes locate the rods in the assembled motor between adjacent axially extending channel sections of the fluid path.2. The stator of claim 1 , wherein the sleeve is formed of a fibre-reinforced material.3. The stator of claim 2 , wherein the sleeve is formed of a carbon fibre-reinforced material.4. The stator of claim 2 , wherein the material includes fibres wound in opposed spirals in at least two adjacent layers.5. The stator of claim 1 , including two sleeve end supports which are received inside respective ends of the sleeve.6. ...

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Номер записи: 76

26-01-2017 дата публикации

ROTOR AND MOTOR HAVING THE SAME

Номер: US20170025926A1

Автор: Lee Jong Chan

Принадлежит: LG INNOTEK CO., LTD.

Provided is a rotor including a rotor core, a plurality of teeth disposed at an outer side of the rotor core, and an insulator configured to surround the teeth wherein the teeth are detachably coupled to the rotor core, the insulator includes a body configured to surround the teeth, and a blade configured to protrude from at least one of an upper surface and a lower surface of the body, and thereby the number of manufacturing components is reduced and manufacturing costs and the number of manufacturing processes are reduced. 1. A rotor comprising:a rotor core;a plurality of teeth disposed at an outer side of the rotor core; andan insulator configured to surround the teeth,wherein the teeth are detachably coupled to the rotor core, and the insulator includes a body configured to surround the teeth and a blade configured to protrude from at least one of an upper surface and a lower surface of the body.2. The rotor of claim 1 , wherein the insulator includes a coupling slot concavely formed on a first side surface thereof and a coupling protrusion convexly formed on a second side surface thereof.3. The rotor of claim 1 , wherein the insulator includes a first coupling slot concavely formed at an upper portion of a first side surface and a first coupling protrusion convexly formed at a lower portion of the first side surface.4. The rotor of claim 3 , wherein the insulator includes a second coupling protrusion convexly formed at an upper portion of a second side surface and a second coupling slot concavely formed at a lower portion of the second side surface.5. The rotor of claim 1 , wherein the blade is obliquely formed to form a receiving angle with respect to a reference line formed in a radial direction from a rotational center of the rotor.6. The rotor of claim 1 , wherein the rotor core includes an assembling slot concavely formed on an outer circumferential surface thereof in an axial direction of the rotor and an assembling protrusion formed at an inner end part ...

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Номер записи: 77

26-01-2017 дата публикации

INDUCTION MOTOR

Номер: US20170025928A1

Автор: LUISE Fabio, PIERI Stefano, SCALABRIN Maurizio

Принадлежит:

An induction motor may include a housing, a stator, a rotor, and/or cooling, fins on an outside surface of the housing. The rotor may include inner air ducts configured to allow passage of airflow therethrough The motor may include outer air ducts in fluid communication with the inner air ducts to form an air-circulation circuit. The outer air ducts may be arranged radially outside the cooling fins. 1. An induction motor comprising:a housing having an outer surface,a stator retained within said housing, said stator having a stator cavity extending along a longitudinal direction,a rotor rotatably arranged within said stator cavity of said stator and configured to rotate relative to said stator around an axis extending along said longitudinal direction,a plurality of circumferentially spaced cooling fins arranged on said outer surface of the housing, each cooling fin extending along said longitudinal direction and projecting outwardly from said outer surface between a base portion located on said outer surface and a free end located at a fin distance, said fin distance being measured as radial distance between said axis and said free end,said rotor comprises a plurality of inner air ducts, each inner air duct being configured to allow passage of an airflow therethrough,said induction motor comprises a plurality of outer air ducts in fluid communication with said plurality of inner air ducts to form an air-circulation circuit,each outer air duct is arranged adjacent to respective one or more cooling fins and is spaced apart and separated from said respective one or more cooling fins,each outer air duct extends along said longitudinal direction, parallel to the respective one or more cooling fins, between a first end portion and second end portion, andwherein each outer air duct is arranged outside said adjacent on or more cooling fins and exhibits a minimum duct distance measured as the minimum radial distance between said axis and said outer air duct, said minimum ...

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Номер записи: 78

24-04-2014 дата публикации

HOUSING UNIT AND ELECTRIC MACHINE COMPRISING A HOUSING UNIT

Номер: US20140111042A1

Автор: Hartig Rainer

Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An embodiment of the invention relates to a housing unit for an electric machine, including at least one housing and at least one flow device for generating at least one first flow of a fluid, the flow device being arranged inside the at least one housing. According to an embodiment of the invention, the at least one flow device includes at least one fan, which has at least one opening and a Coanda surface, wherein the Coanda surface is arranged in the region of the opening, whereby the first flow of the fluid exits from the at least one opening in a predetermined direction and whereby at least one component, which can be arranged in the housing, can be subjected to incident blowing in a targeted manner. 1. A housing unit for an electric machine , comprising:at least one housing; andat least one flow device configured to generate at least one first flow of a flow medium, wherein the flow device being arranged within the at least one housing and including at least one fan, the at least one fan including at least one opening and a Coanda surface, the Coanda surface being arranged in a region of the at least one opening, wherein the at least one fan is configured such that the at least one first flow of the flow medium will exit the at least one opening in a predetermined direction and wherein at least one component, arrangeable in the housing, is subjectable to incident blowing in a targeted manner.2. The housing unit of claim 1 , wherein the at least one fan includes at least one distribution duct for at least the first flow of the flow medium claim 1 , and wherein the at least one distribution duct is configured to supply the at least one opening with flow medium.3. The housing unit of claim 1 , wherein the at least one fan includes at least one distribution duct for at least the at least one first flow of the flow medium claim 1 , and wherein the distribution duct extends at least over a part area of the at least one fan.4. The housing unit of claim 1 , wherein at ...

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Номер записи: 79

29-01-2015 дата публикации

ROTARY ELECTRIC MACHINE

Номер: US20150028727A1

Автор: Arita Hideaki, Hazeyama Moriyuki, Miyama Yoshihiro, MORITA Masao, Watanabe Norihiro

Принадлежит: Mitsubishi Electric Corporation

In a rotary electric machine, first inclined surfaces that intersect a plane that includes a central axis of a shaft at a predetermined angle are disposed radially outside gaps between coil ends of circumferentially adjacent concentrated winding coils, and cooling air that is blown out from a cooling fan and has flowed radially outward through the gaps between the coil ends is converted into an axially outward flow by the first inclined surfaces. 120-. (canceled)21. A rotary electric machine comprising: a cylindrical member; and', 'a pair of end plates that are disposed on two axial ends of said cylindrical member;, 'a housing includinga rotor that is disposed inside said housing such that two axial end portions of a shaft are rotatably supported by said pair of end plates;a cooling fan that includes blades and is disposed on an axial end of said rotor; a stator core in which a plurality of teeth are each disposed so as to project radially inward from an inner circumferential wall surface of an annular core back, and are arranged in a row at a predetermined pitch circumferentially; and', 'a stator coil that is constituted by concentrated winding coils that are wound onto each of said teeth,', 'said stator being held by said cylindrical member so as to surround said rotor; and, 'a stator that includesan air channel dividing plate that is disposed between said end plate and coil ends of said concentrated winding coils that are positioned radially outside said cooling fan,a cyclic pathway being formed in which cooling air is blown out from said cooling fan, flows radially outward between said stator core and said air channel dividing plate, and then flows radially inward between said air channel dividing plate and said end plate, and returns to said cooling fan,wherein said rotary electric machine comprises a first air channel converting member that is disposed radially outside a gap between coil ends of circumferentially adjacent concentrated winding coils, and that ...

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Номер записи: 80

10-02-2022 дата публикации

Motor and exhaust method for motor cavity

Номер: US20220045572A1

Автор: Chang Shu

Принадлежит: Individual

The present invention provides a motor, comprising: a housing; a motor stator located in the housing; a motor output shaft located in the housing; and an exhaust device connected to the housing and configured to exhaust air from the interior of the housing. According to an implementation mode of the present invention, a turbine device is mounted on the motor output shaft; when the motor rotates, an inner cavity of the motor is evacuated to be in a negative pressure state; the higher the motor speed, the lower the air pressure inside the motor, the higher the vacuum degree, and the smaller the frictional resistance between a rotor and the air, so that the motor speed can be effectively increased and a rotor having a relatively large diameter can be used, thereby enhancing the low speed torque while increasing the power density of the motor and facilitating the design of a high power motor.

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Номер записи: 81

24-01-2019 дата публикации

AIR PULSE DEVICE WITH AN ELECTRIC MOTOR AND ASSOCIATED MOTOR CARRIER WITH SEALING MEANS FOR THE PASSAGE OF MOTOR CONNECTORS

Номер: US20190027995A1

Автор: Capoulun Geoffroy, Le Goff Morgan, Rudloff Emmanuel

Принадлежит: VALEO SYSTEMES THERMIQUES

The invention relates to an air pulse device () suitable for equipping a ventilation, heating and/or air-conditioning system of a motor vehicle. The air pulse device () comprises a carrier () on which an electric motor () equipped with connectors () and a control board () equipped with contact switches () are mounted. A sealing member () has openings () whereby said sealing member () individually grips the end portion () of the connectors () prior to the engagement thereof with the contact switches (). The sealing member () has sealing elements () inserted between the carrier () and the heat sink (), extending in a transverse direction towards the outside of the channels (). 1. An air blowing device comprising:a support on which are installed an electric motor and an electronic control board regulating the operation of the motor,the motor being equipped with at least one elongate connector a terminal part of which passes through the support along a canal so that the distal end of said connector collaborates with a contactor with which the control board is equipped,wherein the support is equipped with at least one sealing member individually clamping the terminal part of the connector passing through the sealing member along an opening formed in the continuation of the canal, a heatsink moreover being interposed between the support and the control board and comprising at least one lane for the passage of said connector therethrough, said lane being arranged in the continuation of said canal, andwherein the sealing member comprises sealing elements interposed between the support and the heatsink in the output transverse continuation of said canal.2. The air blowing device as claimed in claim 1 , wherein the sealing elements comprise at least one first sealing element formed at the distal open end of said canal and oriented toward the heatsink and provided with one said opening.3. The air blowing device as claimed in claim 1 , wherein the heatsink comprises at least ...

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Номер записи: 82

24-01-2019 дата публикации

ELECTRIC MACHINE WITH AUXILIARY BLOWER MOUNTING ARRANGEMENT AND/OR MODULAR EXHAUST ASSEMBLY

Номер: US20190027996A1

Автор: Kane Keith, Lang Nicholas G., Queen Ryan Edward

Принадлежит:

An electric machine includes a frame and a plurality of electrical components including a rotor assembly and a stator assembly. The electric machine further includes an auxiliary blower mounting arrangement for cooling the electrical components and/or a modular exhaust assembly for noise attenuation, wherein the modular exhaust assembly further has one or more louvers allowing cooling fluid for cooling the electrical components to exit the electric machine. 1. An electric machine comprising:a frame and a plurality of electrical components including a rotor assembly and a stator assembly, an auxiliary blower mounting arrangement for cooling the electrical components by creating an internal fluid flow path between the electrical components and the auxiliary blower mounting arrangement,wherein the auxiliary blower mounting arrangement comprises a blower motor and a motor mount, wherein the blower motor is coupled to the frame and positioned inside the motor mount, and wherein the motor mount comprises a plurality of cooling openings for creating a blower motor fluid flow path for cooling the blower motor.2. The electric machine of claim 1 , wherein the motor mount is adapted as mounting box comprising sheet metal.3. The electric machine of claim 1 , wherein the motor mount is bolted to the frame.4. The electric machine of claim 1 , wherein the motor mount comprises lower cooling openings and upper cooling openings claim 1 , a cooling fluid entering the motor mount through the lower cooling openings and exiting the motor mount through the upper cooling openings thereby creating the blower motor fluid flow path for cooling the blower motor positioned inside the motor mount.5. The electric machine of claim 1 , wherein the auxiliary blower mounting arrangement is arranged on top of an upper surface of the frame.6. The electric machine of claim 5 , wherein the blower motor is arranged vertically inside the motor mount and coupled to the upper surface of the frame by a ...

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Номер записи: 83

24-01-2019 дата публикации

VEHICLE MAIN ELECTRIC MOTOR

Номер: US20190027999A1

Автор: Kaneko Kenta

Принадлежит: Mitsubishi Electric Corporation

An air intake port has an opening part and an air intake port cover forming an air flow channel from the opening part to the air intake port. The air intake port cover has a guide plate to block the opening part and the air intake port from each other and leave an air flow path between the guide plate and an outer perimeter surface facing a vehicle body, a discharge port formed in the outer perimeter surface, a discharge port cover separating the discharge port and the air intake port from each other, and leaving an air flow path from the opening part to the discharge port, and a pair of cylindrical members, one end of each being connected to two holes formed in the discharge port cover, and the other ends facing each other in a travel direction, and tapering in cross-sectional area. 1. A vehicle main electric motor comprising:an electric motor to drive a vehicle;a fan attached to a rotation shaft of the electric motor, to rotate with rotation of the rotation shaft;a housing containing in an interior thereof the electric motor and the fan, comprising, among both end portions in a direction parallel to the rotation shaft of a surface of the housing facing a vehicle body of the vehicle, (i) an air discharge port formed at an end portion facing the fan, to discharge air from the interior, and (ii) an air intake port formed at another end portion among both end portions, to intake air into the interior; andan air intake port cover comprising an opening part to intake air in a direction perpendicular to a travel direction of the vehicle, and forming an air flow channel from the opening part to the air intake port, whereinthe air intake port cover comprises:(i) a guide plate to guide air inflowing from the opening part to the portion facing the vehicle body within an outer perimeter surface of the air intake port cover parallel to the travel direction in the inside of the air flow channel by blocking the space between the opening part and the air intake port to leave an ...

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Номер записи: 84

23-01-2020 дата публикации

MAGNETIC ENERGY CONVERSION SYSTEM

Номер: US20200028408A1

Автор: Arnold Brian

Принадлежит:

Some implementations include a magnetic energy conversion system comprising a magnet rotor assembly having one or more magnets radially spaced apart, wherein the magnet rotor assembly is configured to be attached to a driveshaft of a vehicle, and a stator assembly having one or more electrical coils, wherein the stator assembly includes a housing and one or more electrical coils, wherein the housing is configured to be placed around the driveshaft of the vehicle and around the magnet rotor assembly attached to the driveshaft so that the one or more electrical coils are in the field of the one or more magnets at least temporarily when the magnet rotor assembly rotates when the driveshaft of the vehicle turns. 1. A magnetic energy conversion system comprising:a magnet rotor assembly having one or more magnets radially spaced apart, wherein the magnet rotor assembly is configured to be attached to a driveshaft of a vehicle;a stator assembly having one or more electrical coils, wherein the stator assembly includes a housing and one or more electrical coils, wherein the housing is configured to be placed around the driveshaft of the vehicle and around the magnet rotor assembly attached to the driveshaft so that the one or more electrical coils are in the field of the one or more magnets at least temporarily when the magnet rotor assembly rotates when the driveshaft of the vehicle turns.2. The magnetic energy conversion system of claim 1 , further comprising a fan blade assembly configured to be attached to the driveshaft claim 1 , wherein the housing includes one or more openings on a first end to provide an air flow into the housing when the fan blade assembly rotates claim 1 , and wherein the housing includes one or more openings on a second end of the housing opposite the first end of the housing to permit air to leave the housing. This application is a national stage application of International Application No. PCT/US17/54802, entitled “Magnetic Energy Conversion ...

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Номер записи: 85

23-01-2020 дата публикации

BRUSH MOTOR AND COOLING MODULE USING THE SAME

Номер: US20200028422A1

Автор: Liu Fei, QIN Rui Feng

Принадлежит:

A brush motor includes a stator and a rotor. The rotor includes a rotary shaft with a rotor core and commutator fixed thereto. The commutator includes an insulating base and commutator segments fixed to the insulating base. The stator includes 2P stator poles, where P is an integer greater than 1. The rotor comprises m teeth, where 4P>m>2P, and 2m is an integral multiple of P. The rotor includes a rotor winding, which is a concentrated winding having m first elements and m second elements. Each tooth is wound with one of the first elements and one of the second elements. the m first elements form a plurality of element groups, each having n first elements connected in series, and being connected only to corresponding commutator segments at both ends thereof, where P≥n≥2. Both ends of each second element are connected to corresponding commutator segments. 1. A brush motor comprising:a stator comprising 2P stator poles, wherein P is an integer greater than 1; anda rotor comprising a rotary shaft, and a rotor core and a commutator fixed to the rotary shaft, the commutator comprising an insulating base and a plurality of commutator segments fixed to the insulating base,wherein the rotor comprises m teeth, wherein m is an integer greater than 2P less than 4P, and 2m is an integral multiple of P;wherein the rotor comprises a rotor winding, which is a concentrated winding having m first elements and m second elements, and each tooth is wound with one of the first elements and one of the second elements;wherein each of the first elements are connected to no more than one of the corresponding commutator segments, the m first elements form a plurality of element groups, each element group having n first elements connected in series without any one of the commutator segments connected between any two of the first elements in the corresponding elements group, each element group being connected only to corresponding commutator segments at both ends thereof, where n is greater ...

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Номер записи: 86

17-02-2022 дата публикации

ELECTRIC WORKING MACHINE

Номер: US20220048176A1

Автор: Abe Satoshi, Hashimoto Hideyuki, Matsushita Akira, Nishikawa Tomomasa, Yamazaki Shingo

Принадлежит:

The present invention provides an electric working machine in which a control board can be disposed without limitations based on a length of a brushless motor in a direction along an axial line. The electric working machine comprises: a brushless motor provided with a rotor and a stator; a motor case and a motor housing in which the brushless motor is stored; a control board which is provided outside of the motor housing in a radial direction of an axial line defined at the center of the rotor, and supports the switching elements; a connection board which is provided in the motor case, and supports the sensors; a through hole provided on the motor case; a through hole provided on the motor housing; and leads and signal lines extending from inside of the motor housing to the outside of the motor housing through the holes. 1. An electric working machine comprising:a motor including an output shaft;a motor case having a cylindrical shape extending in parallel with a first axis of the output shaft, the motor case accommodating the motor, the motor case comprising a side wall surrounding the motor and a bottom disposed at one end of the side wall;a first control unit comprising first circuit elements to control the motor, the first control unit being disposed outside the side wall of the motor case;a second control unit comprising second circuit elements to control the motor, the second control unit being disposed inside the side wall of the motor case;a fan disposed inside the side wall of the motor case, the fan rotating when the output shaft is driven;a housing at least partially covering the motor case; andan electric path connecting the first circuit elements with the second circuit elements,wherein the motor case has a first opening in the bottom and a second opening in the side wall,wherein the electric path passes through the second opening, andwherein the electric working machine has a first air path connecting outside of the housing and inside of the motor case ...

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Номер записи: 87

31-01-2019 дата публикации

OUTBOARD MOTOR

Номер: US20190031310A1

Автор: Matsui Takahiro, MORINO Makoto

Принадлежит:

An outboard motor includes an engine including a crankshaft, a generator including a rotor that rotates together with the rotation of the crankshaft and a stator in which a coil is wound so as to face the rotor, and a fan including a blade disposed coaxially with the rotor, provided separately from the rotor, and that rotates together with the rotation of the rotor. 1. An outboard motor comprising:an engine including a crankshaft;a generator including a rotor that rotates together with a rotation of the crankshaft and a stator in which a coil is wound so as to face the rotor; anda fan including a blade disposed coaxially with the rotor, provided separately from the rotor, and that rotates together with the rotation of the rotor.2. The outboard motor according to claim 1 , wherein the blade includes an annular first plate member and a plurality of fins that extend downward from the first plate member and are integral and unitary with the first plate member.3. The outboard motor according to claim 2 , wherein the plurality of fins extend in a radial direction and are arcuately curved in a planar view.4. The outboard motor according to claim 1 , whereinthe fan further includes a first air guide including a floor and a wall that extends upward from the floor and that surrounds fins provided on the blade from a lateral side; andan upper surface of the floor is disposed at a same or substantially a same height as a lower end of the blade.5. The outboard motor according to claim 4 , further comprising a cowling including an engine compartment in which the engine is housed; whereinthe fan further includes a lid-shaped second air guide that covers the first air guide from above between the cowling and the blade; andan upper surface of the blade that faces the lid-shaped second air guide is flat or substantially flat.6. The outboard motor according to claim 5 , further comprising an air guide passage through which air flows laterally from the blade and that extends along an ...

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Номер записи: 88

01-05-2014 дата публикации

Rotor and motor and/or electric vehicle driving apparatus including the same

Номер: US20140117807A1

Автор: Byeonghwa LEE, Hokyoung Lim, Jungpyo Hong, Sanghwa Do, Seungdo Han, Youngboong Kim

Принадлежит: LG ELECTRONICS INC

A motor includes a plurality of tooth bodies extending from a rotor core. A pole shoe extends from an end of at least one tooth body at opposite sides where both sides of the pole shoe have a curved outer part opposite to each other and asymmetric to each other in that a radius of curvature of the curved outer part of the one side of the pole shoe that is in a rotational direction of the rotor has a smaller radius than a radius of curvature of the other side of the pole shoe that is not in the rotational direction of the rotor.

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Номер записи: 89

04-02-2021 дата публикации

COOLED MOTOR FOR A PAPER SHREDDER

Номер: US20210031207A1

Автор: Li Kiapin, Tso Yung Kang, Yang Zhankai, Zhang Bin

Принадлежит: Aurora Office Equipment Co., Ltd. Shanghai

A paper shredder motor cooling assembly having a paper shredder motor coupled to a fan shaft, an enclosure surrounding the paper shredder motor and having selected input and selected output vents to control airflow to the paper shredder motor, a fan coupled to the fan shaft, communicating with the selected input vents or the selected output vents; when the paper shredder motor is operating, the rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents, removing heat from the motor. A duty cycle of greater than 50% is obtained. The fan can be coupled to the motor by speed increasing gearing, attached to the cutter blade assembly, such that the fan turns faster than the motor. The fan also can be attached to the motor shaft. An input fan and an output fan can be used. 17.-. (canceled)8. A paper shredder , comprising:a cutting blade assembly having a shredder blade shaft;a motor having a motor rotor coupled to the cutting blade assembly;gears of the cutting blade assembly being coupled to an overdrive gear assembly;an enclosure enclosing the motor, the enclosure having first selected vent holes defining an input air path on one end and second selected vent holes defining an output air path on the other end; anda fan assembly coupled to the overdrive assembly, disposed at an end of the enclosure, and in confined communication with the vent holes, wherein, when the motor is operating, the cutting blade assembly is urged to comminute shreddant and the overdrive gear assembly drives the fan assembly, the fan assembly creating a pressure differential between the input air path and the output air path, and wherein the pressure differential causes air to be forced across the motor such that the motor is cooled.9. The paper shredder of claim 8 , further comprising an air manifold opening fluidly coupled to the fan assembly wherein the enclosure is fluidly coupled to one of the input air path or the output ...

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Номер записи: 90

04-02-2021 дата публикации

COOLED MOTOR FOR A PAPER SHREDDER

Номер: US20210031208A1

Автор: Li Kiapin, Tso Yung Kang, Yang Zhankai, Zhang Bin

Принадлежит: Aurora Office Equipment Co., Ltd. Shanghai

A paper shredder motor cooling assembly having a paper shredder motor coupled to a fan shaft, an enclosure surrounding the paper shredder motor and having selected input and selected output vents to control airflow to the paper shredder motor, a fan coupled to the fan shaft, communicating with the selected input vents or the selected output vents; when the paper shredder motor is operating, the rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents, removing heat from the motor. A duty cycle of greater than 50% is obtained. The fan can be coupled to the motor by speed increasing gearing, attached to the cutter blade assembly, such that the fan turns faster than the motor. The fan also can be attached to the motor shaft. An input fan and an output fan can be used. 1. A paper shredder motor cooling assembly , comprising:a paper shredder motor having a motor rotor shaft mechanically coupled to a fan shaft;an enclosure fitting over the paper shredder motor and having selected input vents and selected output vents disposed to control airflow to the paper shredder motor;a fan coupled to the fan shaft and in fluid communication with the selected input vents or the selected output vents in the enclosure,wherein when the paper shredder motor is operating, the motor rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents,wherein heat is removed from the motor, andwherein a duty cycle of greater than 50% is obtained thereby.2. The paper shredder motor cooling assembly of claim 1 , wherein the fan is an input fan claim 1 , insufflating air into the input vents and across the motor.3. The paper shredder motor cooling assembly of claim 1 , wherein the fan is an output fan claim 1 , extracting air through the output vents and across the motor.4. The paper shredder motor cooling assembly of claim 1 , further comprising a blower input fan ...

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Номер записи: 91

02-02-2017 дата публикации

MOTOR STRUCTURE

Номер: US20170033642A1

Автор: CHOU Wen-San

Принадлежит:

An improved motor structure includes a housing and a cooling fan for generating an air current that can quickly enter the housing to dissipate heat therein. The housing is pressed to form a plurality of intercepting fins and a plurality of inlet holes. The air current can be guided by the intercepting fins so that it can pass through the inlet holes more easily to enter the inner space of the motor's housing to take away the heat generated in the motor, so that heat is not easy to accumulate in the housing of the motor, and thus maximum power output of the motor can be achieved. Therefore, the performance and service life of the motor can be increased. 1. In a motor including a housing , a front cover , a rotating shaft , and a cooling fan , wherein the housing defines therein an inner space with a front opening and has a rear closure wall opposite to the front opening , the rear closure wall defining a central hole and a plurality of outlet holes; the front cover closes the front opening of the housing and defines a central hole; the rotating shaft is mounted across the inner space of the housing , the rotating shaft having a first end which is inserted through the central hole of the rear closure wall and having a second end which is inserted through the central hole of the front cover; the cooling fan is fixed to the second end of the rotating shaft , so that the cooling fan is rotated together with the rotating shaft; wherein the improvement comprises:the housing is pressed to form a plurality of air intercepting fins, which are bent outwardly such that a plurality of first inlet holes are defined next to the corresponding air intercepting fins, whereby an outer portion of a whirling, ongoing air current generated by the cooling fan can be guided by the air intercepting fins to pass through the first inlet holes and thus to enter the housing for dissipating heat therein.2. The motor of claim 1 , wherein the air intercepting fins extend generally towards the ...

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Номер записи: 92

01-02-2018 дата публикации

POWER TOOL AND METHOD OF FORMING COIL IN POWER TOOL MOTOR

Номер: US20180034354A1

Автор: Niwa Akira

Принадлежит: MAKITA CORPORATION

In a brushless motor comprising a stator core having a plurality of teeth that protrude therefrom in radial directions, a front insulator which is attached to the stator core and which has a plurality of insulating portions that protrude therefrom along the direction of protrusion of the respective teeth, and a plurality of coils formed by magnet wire wound about each of the insulating portions at the respective teeth, a top face of the respective insulating portions of the front insulator is provided in advance with a deformable rib which is capable of being deformed by tension of the magnet wire wound thereabout, and the magnet wire is wound about the deformable rib to form the coils as the deformable rib is made to deform in correspondence to the external shape of the magnet wire. 1. A method of forming a coil in a power tool motor , the power tool motor comprising a stator core having a plurality of teeth that protrude therefrom in radial directions; an insulator which is attached to the stator core and which has a plurality of insulating portions that protrude therefrom along the direction of protrusion of the respective teeth; and a plurality of coils formed by wire wound about each of the insulating portions at the respective teeth , the method comprising:providing at least a portion of a surface about which the wire is wound at the respective insulating portions of the insulator in advance with a deformable portion which is capable of being deformed by tension of the wire wound thereabout; andwinding the wire about the deformable portion to form the coils as the deformable portion is made to deform in correspondence to the external shape of the wire.2. The method of forming a coil in a power tool motor according to claim 1 , wherein the deformable portion is a deformable rib provided in erect fashion along the direction of protrusion of the insulating portion.3. The method of forming a coil in a power tool motor according to claim 2 , wherein the deformable ...

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Номер записи: 93

02-02-2017 дата публикации

Air flow methods and systems for a welder-generator

Номер: US20170034957A1

Автор: Nathan Joe Jochman

Принадлежит: ILLINOIS TOOL WORKS INC

Configurations of internal components of a welder-generator are provided to improve efficiency of the cooling of the internal components. Configurations are provided in which a single fan, such as an engine fan, drives a single airflow path through the welder-generator. Configurations are provided in which a primary engine fan drives a first airflow path and a secondary generator fan drives a second airflow path through the welder-generator. Internal components are thermally aligned such that air circulates first through components with low critical operating temperatures and last through components with higher critical operating temperatures.

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Номер записи: 94

17-02-2022 дата публикации

ENHANCEMENTS TO COOLING MEANS FOR AXIAL FLUX GENERATORS

Номер: US20220052571A1

Автор: KELLY Hugh-Peter Granville

Принадлежит:

A generator comprising a series of spaced annular stators sandwiched between a series of rotors, the rotors each being separated by annular collars, the annular collars defining a central cavity; at least one cooling gas source for supplying gas to the central cavity; vents through the annular collars for providing a means of egress for the cooling gas from the central cavity radially outwards over the rotors and the annular stators and the front, rear and side walls of coils embedded in the annular stators. 1. A generator comprising:at least one annular stator having an inner circumference and an outer circumference and a plurality of spaced coils within and around an axis of the annular stator; andat least one cooling gap for the flow of cooling fluid in the annular stator between adjacent coils of the plurality of coils, the at least one cooling gap having an inner opening in the inner circumference and an outer opening in the outer circumference.2. The generator of claim 1 , wherein the at least one cooling gap accommodates a sealed channel for conveying the cooling fluid.3. The generator of claim 2 , wherein the sealed channel is formed of a non-magnetic material with a thermal conductivity of at least 0.5 W/mK claim 2 , preferably at least 1 W/mK claim 2 , more preferably at least 10 W/mK.4. The generator of claim 2 , wherein the sealed channel is formed of a non-electrically conducting material or has slits in it to prevent eddy currents being induced along its length.5. The generator of claim 2 , wherein the sealed channel is formed of a metal.6. The generator of claim 2 , wherein the sealed channel is formed as a tube.7. The generator of claim 1 , further comprising an inlet for the cooling gas into the at least one cooling gap which is positioned axially in-line with the coils of the associated adjacent coils and/or circumferentially in-line with the at least one cooling gap.8. The generator of claim 1 , further comprising an outlet for the cooling gas out ...

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Номер записи: 95

31-01-2019 дата публикации

ELECTRIC MOTOR ASSEMBLY FOR RAILWAY DRIVE

Номер: US20190036417A1

Автор: MAIELLO Ciro, PORZIO Mario, SINATTI Simone

Принадлежит:

An electric motor assembly for railway drive. The motor assembly comprises: 1100. An electric motor assembly () for railway drive;{'b': '100', 'claim-text': [{'b': '10', 'electric drive means ();'}, {'b': 20', '10', '20', '16', '10, 'ventilation and cooling means () for ventilating and cooling said electric drive means () through cooling air; said ventilation and cooling means () being fitted onto the shaft () of said electric drive means (); and'}, {'b': 30', '10', '30', '70, 'draining means () for draining the ventilation and cooling air flow used to ventilate and cool said electric drive means (); said draining means () being provided with silencer means () for the cooling air flow;'}], 'the motor assembly () comprising{'b': 70', '39', '30, 'the motor assembly being characterized in that said silencer means () comprise at least one straight channel (D) to reduce the turbulent flow into a substantially laminar flow of the ventilation and cooling air flowing out of said draining means ();'}{'b': 30', '300', '21', '39', '39', '39', '39', '39', '300', '39, 'and in that said draining means () comprise, furthermore, a scroll (), surrounding ventilation means (), which comprises two separate arched channels (A, B); said arched channels (A, B) communicating with one another, from the fluidic point of view, only in a common outlet area (C) for the ventilation and cooling air; said scroll () and said at least one straight channel (D) being placed in series with respect to each other.'}2100239110. Motor assembly () claim 1 , according to claim 1 , characterized in that the longitudinal axis (X) of said straight channel (D) is parallel to the longitudinal axis (X) of said electric drive means ().310039. Motor assembly () claim 1 , according to claim 1 , characterized in that said straight channel (D) has a square or rectangular cross section.4100300301323334353637. Motor assembly () claim 1 , according to claim 1 , characterized in that said scroll () comprises an inner ...

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Номер записи: 96

12-02-2015 дата публикации

ELECTRIC WORKING MACHINE

Номер: US20150041167A1

Автор: TANIMOTO Hideyuki, Yamaguchi Hayato

Принадлежит:

To provide an electric working machine, in which a brushless motor is mounted, in order to improve energy efficiency. An electric working machine includes: a disk motor including a rotor having a permanent magnet pole, an output shaft fixed to the rotor and serving as a rotation center of the rotor and a stator configured to generate a magnetic field with respect to the rotor; and a housing configured to accommodate the rotor therein and to rotatably support the output shaft. The stator includes: a magnetic yoke facing the rotor; and a coil board provided on a surface of the yoke facing the rotor. The stator is fixed to the housing side. The coil board has an extension portion on an outer circumferential edge thereof. Electric circuit elements for a motor driving circuit are mounted on the extension portion. 1. An electric working machine comprising:a housing having a motor;a working unit provided to the housing and is configured to be driven by the motor; anda gripping section provided to be extended from the housing,characterized in that: a rotor having a substantially circular disk shape and comprising a plurality of permanent magnet poles;', 'an output shaft coaxially fixed to the rotor and serving as a rotation center of the rotor; and', 'a stator having a coil board and generating a magnetic field with respect to the rotor; and, 'the motor is a disk motor, the disk motor comprisingan electric circuit element for a motor driving circuit is mounted on the housing at a side of the gripping section.2. The electric working machine according to claim 1 , wherein:the coil board comprises an extension portion extending toward the gripping section on an outer circumferential edge thereof; andthe electric circuit element is provided on the extension portion.3. The electric working machine according to claim 2 , wherein:the gripping section comprises a pipe section attached on the housing; andthe extension portion is provided beneath of the pipe section.4. The electric ...

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Номер записи: 97

30-01-2020 дата публикации

ELECTRIC MOTOR HAVING IMPROVED MOTOR COOLING FOR DRIVING A FAN

Номер: US20200036262A1

Автор: KNEIP Sven, Kopper Jan

Принадлежит:

The disclosure relates to an electric motor, in particular configured as an internal rotor motor, for driving a fan having a stator, a rotor, a drive shaft, motor electronics disposed on a first axial side of the stator, a first cooling impeller which is associated with the motor electronics and disposed on the first axial side of the stator on the drive shaft and generates a first cooling air flow at least to the motor electronics during operation of the electric motor, and a second cooling impeller which is disposed immediately adjacent the stator on a second axial side of the stator opposite the first axial side and has impeller blades that generate a second cooling air flow at least in the axial direction along the stator during operation of the electric motor. 21. The electric motor according to claim , wherein the second cooling impeller is integrally connected to the rotor.31. The electric motor according to claim , wherein a cooling gap is formed between the stator and the rotor through which the second cooling impeller , which is configured as a radial impeller , draws the second cooling air flow.4. (canceled)51. The electric motor according to claim , wherein supporting is only provided axially on one side opposite the stator.6. (canceled)71. The electric motor according to claim , wherein the end shield has a receiving space receiving the second cooling impeller.8. The electric motor according to claim 5 , wherein the second cooling impeller has a hub section enclosing the at least one drive shaft bearing in the axial direction.9. (canceled)101. The electric motor according to claim claim 5 , wherein the receiving space of the end shield and the second cooling impeller have mutually corresponding shapes such that an axial gap between the end shield and the second cooling impeller is constant.111. The electric motor according to claim claim 5 , wherein the second cooling impeller has a radial edge section which is configured to be inclined in the axial ...

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Номер записи: 98

30-01-2020 дата публикации

MOTOR AND DUCTED FAN

Номер: US20200036263A1

Автор: Pydin Andrii

Принадлежит:

A motor includes: a rotor core which rotates about an axis; a plurality of magnets which extend in an axial direction of the axis inside the rotor core and are disposed in a circumferential direction; a shaft body which is disposed coaxially with the rotor core and has a hollow portion through which a fluid is able to pass from a first side to a second side in the axial direction; and a plurality of heat radiation portions which are disposed along the magnet in the circumferential direction and have a planar portion disposed to be parallel to a side surface of the magnet facing a radial direction, wherein the heat radiation portion extends to be closer to the second side than a second side core end surface located on the second side in the axial direction of the rotor core. 1. A motor , comprising:a rotor core which rotates about an axis;a plurality of magnets which extend in an axial direction of the axis inside the rotor core and are disposed in a circumferential direction;a shaft body which is disposed coaxially with the rotor core and has a hollow portion through which a fluid is able to pass from a first side to a second side in the axial direction; anda plurality of heat radiation portions which are disposed along the magnet in the circumferential direction and have a planar portion disposed to be parallel to a side surface of the magnet facing a radial direction,wherein the heat radiation portion extends to be closer to the second side than a second side core end surface located on the second side in the axial direction of the rotor core.2. The motor according to claim 1 ,wherein the rotor core has a plurality of the magnets arranged along the radial direction from the axis to an outer circumferential portion of the rotor core, andthe heat radiation portion is disposed between the plurality of magnets arranged in the radial direction.3. The motor according to claim 2 ,wherein at least a part of the heat radiation portion located between the magnets is formed ...

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Номер записи: 99

08-02-2018 дата публикации

Wind turbine with improved cooling

Номер: US20180038351A1

Автор: Bo Nedergaard Jacobsen, Peter Hessellund Soerensen

Принадлежит: SIEMENS AG

A wind turbine including a nacelle supported by a tower, a generator, a rotatable front assembly arranged on a side of the generator facing away from the nacelle, and a cooling system for cooling the generator by feeding cooling air from the rotatable front assembly to the generator is provided. Furthermore, a method of cooling a generator of a wind turbine is described.

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Номер записи: 100