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Circulation

Subclass of:

310 - Electrical generator or motor structure

310010000 - DYNAMOELECTRIC

310040000 - Rotary

310052000 - Cooling or fluid contact

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
310060000 Self-forced 162
310059000 Plural units or plural paths 90
310064000 Heat-exchange structure 73
Entries
DocumentTitleDate
20100072836Cooling Device for Feeding Motor of Pick-Up Head - The invention provides a cooling device for the feeding motor of a pick-up head on a traverse covered a protection plate. The protection plate disposes a long slot along the major axis of the traverse. One end of the long slot disposes a spindle rotating a disc above the protection plate. A feeding motor rotates a screw bar to move the pick-up head back and forward along the long slot. A diffuser is connected to at least one side of the upper surface of the feeding motor. An install recess on the protection plate faces the rotating disc and accommodates the upper surface and the diffuser to increase the cooling effect.03-25-2010
20090121564ENHANCED MOTOR COOLING SYSTEM - A core assembly for an electric motor includes a heat exchanger comprising a plurality of fins. The fins define a plurality of cooling air passages that include offset fins that disrupt cooling air flow to reduce the formation of boundary layers and improve heat transfer capacity.05-14-2009
20100109454LIQUID DEFLECTING BAFFLE FOR AN ELECTRIC MOTOR - A fluid deflecting baffle is provided for use on an electric motor to be used in an environment where liquid may otherwise pass through a vent opening in an endshield of the motor. The baffle is secureable to the endshield and extends in a partial covering relationship with the vent opening. The baffle includes a vent passage therethrough and has at least one liquid flow obstructing louver that extends across the vent opening to deflect liquid away from the vent passage while allowing venting air to flow through the vent passage. The louver includes a generally flat liquid deflection surface that is disposed at an oblique angle relative to the axis of the motor and at least partially faces a venting direction of incoming air and fluid.05-06-2010
20130088104CENTRIFUGAL CONCENTRATOR WITH SUSPENDED ROTOR BOWL - An electric motor is provided with a hollow rotating drive shaft extending along the central axis of the motor, a stationary liquid supply line and a rotating union which communicates with the liquid supply line and the hollow interior of the drive shaft for supplying liquid to the hollow interior of the drive shaft.04-11-2013
20100001597Electric Motor - The electric motor has a rotor (01-07-2010
20130057094LUBRICATION STRUCTURE OF GENERATOR MOTOR AND GENERATOR MOTOR - A lubrication structure of a generator motor, includes: at least two bearings rotatably supporting an input/output shaft of the generator motor; a gap provided between the two bearings; a cylindrical-shaped bearing attaching member attached to inner peripheral parts of the two bearings; and a through hole penetrating the bearing attaching member outward in a radial direction and opening in a position overlapping with the gap.03-07-2013
20120223601TERMINAL BLOCK AND MOTOR PROVIDED THEREWITH - A terminal block (09-06-2012
20090066175DYNAMOELECTRIC MACHINE - A magnet seat is disposed on a second yoke portion and projects into respective spaces between circumferentially-adjacent pairs of second claw-shaped magnetic pole portions, and permanent magnets are disposed only near the second yoke portion so as to be held by the magnet seat so as to face an inner circumferential surface near a tip end of each of a plurality of first claw-shaped magnetic pole portions. Each of the permanent magnets is magnetically oriented in a reverse direction to an orientation of a magnetic field that a field coil produces.03-12-2009
20110285222Sleeve Member for an Electric Machine - Embodiments of the invention provide an electric machine module including a module housing. The module housing can include a sleeve member coupled to at least one end cover and can define a machine cavity. In some embodiments, the sleeve member can include an inner perimeter and can be coupled to a stator assembly of an electric machine. In some embodiments, the electric machine can be positioned within the machine and at least partially enclosed by the module housing. In some embodiments, a coolant jacket can be defined by at least a portion of the sleeve member and at least a portion of the stator assembly.11-24-2011
20110298316Electric Machine Cooling System and Method - Embodiments of the invention provide an electric machine module and a method for cooling an electric machine. The electric machine module includes the electric machine including a stator with stator end turns and a housing enclosing the electric machine. An inner wall of the housing defines a machine cavity. The electric machine module also includes a cover coupled to the housing and extending radially inward into the machine cavity. The cover and the stator end turns define a stator cavity which is in fluid communication with the machine cavity.12-08-2011
20110298318Gravity Fed Oil Cooling for an Electric Machine - Embodiments of the invention provide an electric machine module and a method for cooling an electric machine. The electric machine module includes an electric machine and a housing enclosing the electric machine within a machine cavity. The housing can include at least one end cap positioned axially adjacent to the electric machine and including a shroud protruding into the machine cavity. The shroud can include a step with an angled rotor feed path.12-08-2011
20110298317Electric Machine Cooling System and Method - Embodiments of the invention provide an electric machine module and a method for cooling an electric machine. The apparatus and method include providing the electric machine including a rotor and a stator with stator end turns and enclosing at least a portion of the electric machine within a housing. The method also includes introducing a coolant into a machine cavity, directing the coolant toward the stator end turns, and returning a portion of the coolant which flows past the stator end turns back toward the stator end turns using a rotating agitator member operatively coupled to the rotor.12-08-2011
20090206688COOLING STRUCTURE FOR STATOR - A cooling structure for a stator includes: a stator core; a stator coil that is wound on the stator core and includes a coil end formed on an end surface of the stator core in an axial direction of the stator core; a ring member provided on an outer periphery of the stator core; a case that houses the ring member and the stator core on which the stator coil is wound. In the cooling structure, a cooling medium is supplied between an outer peripheral surface of the ring member and an inner peripheral surface of the case, and the ring member includes at least one opening through which the cooling medium is supplied to the coil end from radially outside of the coil end.08-20-2009
20100090549THERMAL MANAGEMENT IN A FAULT TOLERANT PERMANENT MAGNET MACHINE - A PM machine is provided. The PM machine includes a stator including a stator core, wherein the stator core defines multiple step-shaped stator slots. The stator includes multiple fractional-slot concentrated windings wound within the step-shaped stator slots. The stator also includes at least one cooling tube disposed around the windings. The stator further includes a first insulation layer disposed around the cooling tube. The stator also includes a second insulation layer disposed around the first insulation layer. The stator further includes at least one slot wedge configured to close an opening of a respective one of the step-shaped stator slots, wherein the slot wedge is further configured to adjust a leakage inductance in the PM machine. The PM machine also includes a rotor having a rotor core and disposed outside and concentric with the stator, wherein the rotor core includes a laminated back iron structure disposed around multiple magnets.04-15-2010
20090015082Electric Motor and Method of Producing Electric Motor - In a fan motor 01-15-2009
20090026857Electric Motor - The electric motor has a rotor (01-29-2009
20100225183STATOR COOLING STRUCTURE FOR SUPERCONDUCTING ROTATING MACHINE - Disclosed herein is a structure for cooling the stator of a superconducting rotating machine. The structure includes a stator coil. Slots are axially disposed at the stator coil to support the stator coil, and a space is defined between the slots to allow the stator coil to be partially exposed. A stator yoke is disposed on the slots such that a space is defined between the exposed portion of the stator coil, the slots and the stator yoke. A cooling tube is disposed in the space defined between the exposed portion of the stator coil, the slots and the stator yoke, thus simultaneously cooling both the stator coil and the stator yoke.09-09-2010
20100133931WIND TURBINE WITH DIRECT-CONNECTED VARIABLE SPEED BLOWER - A wind turbine is provided having at least one generator, and at least one blower motor connected to the generator. The blower motor is configured to rotate the fan for circulating air to the generator. The blower motor is connected to the generator so that a variable power output of the generator results in a variable power output of the blower motor and a variable speed of the fan.06-03-2010
20110109175ARRANGEMENT WITH AN ELECTRIC MOTOR AND A PUMP - An arrangement including an electric motor driving a pump is provided. The arrangement is delivering a process fluid along a flow path, which flow path extends along a gap between a stator and a motor rotor of the electric motor. To avoid rotor dynamic instability caused by hydrodynamics in the gap flow, guiding elements are provided in the flow path.05-12-2011
20090033160ELECTRIC MOTOR FOR HYBRID OR ELECTRIC VEHICLE - A motor includes a stator, a rotor supported by a rotor hub for rotation relative to the stator, and a housing fixedly supporting the stator. The housing rotatably supports the rotor and includes a first end enclosing the stator, the rotor, and the rotor hub and a second end exposing the stator, the rotor, and the rotor hub to define an opening between the rotor and within the rotor hub.02-05-2009
20110175468ELECTRIC ROTATING MACHINE - An electric rotating machine including a rotor rotating relative to a stator, the rotor rotating a first fan placed at a first end of the stator, and a second fan placed at a second end of the stator opposite to the first end, the first and second fans being configured to generate an air flow from the first fan to the second fan through the rotor and the stator, the first fan comprising an external ring connecting the radial ends of blades together.07-21-2011
20110101802COOLING DEVICE FOR AN ELECTRIC MACHINE ARRANGEMENT - A cooling device (05-05-2011
20090026856Brushless AC generator for use in automotive vehicle - A brushless AC generator is mounted on a vehicle such as a truck, a farming vehicle or a construction vehicle. The generator is composed of a housing, stator fixedly contained in the housing, a rotor, for supplying a magnetic field to the stator, rotatably supported in the stator, and other associated components including a voltage regulator and a rectifier. The housing is composed of a front housing and a rear housing. An outside fan is connected to a rotor shaft and disposed at a front side. Cooling air is introduced into the generator by the outside fan through windows formed in the rear housing. A fringe surface of the window facing a shoulder portion of the rotor is sloped, so that the cooling air is smoothly introduced along the sloped surface thereby to improve cooling efficiency.01-29-2009
20110025145MAGNET APPARATUS OF AN ELECTRICAL MACHINE WITH A COOLANT LINE - The mounting of a coolant line system in a magnet device of an electric machine is to be simplified. Therefore, a magnet device is provided, with a ferromagnetic base member (02-03-2011
20100253163COMPACT HIGH POWER ALTERNATOR - A compact, high power, power conversion apparatus including a rotor and a stator. The rotor includes a cylindrical casing, and a predetermined number of permanent magnets disposed on the casing, and is adapted for rotation about the axis of the casing. The stator includes a core and a plurality of sets of conductive windings, each set including a predetermined number of individual conductive windings and associated with an electrical phase. A respective collecting conductor is associated with each set of conductive windings, with each individual conductive winding of the set being electrically connected to the associated collecting conductor. The respective collecting conductors are disposed in a coolant flow path a coolant flow path directing coolant into contact with the stator windings, electrically isolated from each other and spaced apart from each other and from the windings. Collecting conductors in the form of continuous rings and in the form of a plurality of arcs are disclosed.10-07-2010
20080252155SPRAY COOLED V-WEDGE FOR AEROSPACE GENERATOR - A high speed generator cooling system directs a cooling oil spray through a chamber inside a coil support wedge assembly, which may be disposed adjacent to the generator coils. Heat from the generator coils may be conducted through the walls of the coil support wedge assembly and into the chamber where it is removed by the cooling oil spray passing through the chamber. The cooling oil passes through a generator rotor shaft and into a cooling passage in least one of the rotor laminations.10-16-2008
20130169079MOTOR COOLING SYSTEM - An apparatus includes an electric machine. The electric machine includes an internal housing, an armature coil disposed within the internal housing and separated from the internal housing by a gap, and a magnetic core associated with the armature coil. The apparatus also includes a fan configured to cause air to flow in the gap between the armature coil and the internal housing.07-04-2013
20110001371SYSTEM FOR THE CIRCULATION OF FILTERED AIR INSIDE THE WIND TURBINE - System for the circulation of filtered air inside the wind turbine (01-06-2011
20120062056ELECTRIC MACHINE INCLUDING A STATOR HAVING A STATOR SLEEVE AND METHOD OF COOLING A STATOR - An electric machine including a housing, and a stator mounted relative to the housing. The stator includes a body including a first end portion that extends to a second end portion and a plurality of stator windings that extend between the first and second end portions. A sleeve member is mounted to the stator and covers a portion of the stator windings at one of the first and second end portions. The sleeve member is configured and disposed to guide a coolant over the portion of the stator windings to remove heat from the stator.03-15-2012
20120112572WELDED MANIFOLD FOR A STATOR HOUSING SEGMENT - A stator system for an electric machine, in particular a generator of a wind turbine is disclosed. The stator system includes a stator housing segment, a plate, supply system and a manifold segment. The stator housing segment includes a cooling channel which includes an opening at an axial front face of the stator housing segment. The plate is mounted to the axial front face for reinforcing the stator housing segment. The supply system is adapted for supplying cooling fluid to the cooling channel. The manifold segment is welded to the plate for forming a guide channel for the cooling fluid between the manifold segment and the plate. The plate includes a through-hole for generating a connection between the opening of the cooling channel and the guide channel. The supply system is connected to the guide channel.05-10-2012
20120119603ROTOR FOR A TURBO GENERATOR, AND TURBO GENERATOR COMPRISING A ROTOR - A rotor for a turbo generator is provided. The rotor includes a cylindrical rotor shaft that expands in the center to form a rotor body, grooves introduced into the cylindrical surface of the rotor body, an excitation winding accommodated in the grooves, a feeding duct through which a cooling gas flows, and cooling ducts which penetrate the excitation winding substantially in the radial direction and connect the feeding duct to respective outlets in the cylindrical surface of the rotor body A distribution duct extending in the longitudinal direction of the shaft is arranged in the area of the central longitudinal axis. The feeding ducts are connected to the distribution duct via junction ducts. An admission duct for feeding the cooling gas is provided for each distribution duct.05-17-2012
20120212085AXIAL-FLUX ELECTRIC MACHINE - An axial-flux electric motor includes a stator having a plurality of stator windings and a plurality of stator pole-pairs, a first rotor configured to magnetically interact with the stator in an axial direction, the first rotor is positioned on one side of the stator, having a plurality of permanent magnets embedded thereon with a plurality of rotor pole-pairs, a second rotor configured to magnetically interact with the stator in the axial direction, the second rotor is position on another side of the stator, having a plurality of permanent magnets embedded thereon with a plurality of rotor pole-pairs, and a plurality of stationary ferromagnetic segments, positioned between the stator and the first rotor and between the stator and the second rotor, the ferromagnetic segments are adapted to modulate magnetic field of the permanent magnets in the axial direction.08-23-2012
20120133222ELECTRIC VEHICLE USING ELECTRIC MOTOR AND ELECTRIC MOTOR - An electric motor includes a frame, a stator disposed in the frame, a rotor disposed in the frame, and a cooling unit configured to perform a cooling operation by supplying a cooling fluid into the frame. Under this configuration, a cooling function may be enhanced, and a high output density and high efficiency may be implemented.05-31-2012
20120175977Coolant Flow Enhancing Device For Stator Coil End Turns of Fluid Cooled Electric Motor - A coolant flow enhancing device is provided to increase electric machine coil cooling at coil end turn locations. Such a device is incorporated into an overall fluid cooled electric machine that has phase separators extending through slots between stator teeth. The device includes flow deflectors located at ends of the phase separators. Each of the flow deflectors is designed so that a contour of its interior surface follows an outer contour of a corresponding one of the end turns to both maximize a cooling fluid flow rate past the one of the end turns and minimize separation of the fluid from the one of the end turns.07-12-2012
20120074799Electric Machine Cooling System and Method - Embodiments of the invention provide an electric machine module comprising an electric machine with a stator and housing at least partially circumscribing the electric machine. The housing includes at least two housing members coupled together and substantially securing the electric machine within the housing. The electric machine module also includes a coolant jacket at least partially defined by an outer diameter of the stator and an inner diameter portion of the housing.03-29-2012
20110043059ALTERNATING CURRENT GENERATOR COMPRISING A STATOR AND A STATOR WINDING INSERTED IN STATOR GROOVES MADE OF WINDING ELEMENTS AND METHOD FOR PRODUCING AN INVENTIVE STATOR - An alternating-current generator, in particular a three-phase generator, for a motor vehicle, having a rotor including north and south poles, particularly having claw-pole fingers extending in the axial direction and alternating as north and south poles at the rotor's periphery, a stator having a magnetic core, especially laminated core, having slots and a stator winding disposed in the magnetic core's slots, the stator winding having winding overhangs that are coolable by an approximately radial air flow produced by at least one fan mounted at the rotor, the stator being situated opposite the rotor, and the stator and the rotor having defined positions relative to each other, the multiphase stator winding being made up of winding elements, at least one winding element having more than two sections inserted in slots, and at least one winding element having more than one reversal section which brings about a change in the radial position.02-24-2011
20120080965Coolant Channels for Electric Machine Stator - Embodiments of the invention provide an electric machine module including an electric machine with a stator assembly. The stator assembly includes a plurality of stator laminations and the plurality of stator laminations include a plurality of different outer diameters. The plurality of stator laminations are positioned relative to one another to form radially-extending fins. At least one circumferential coolant channel is defined along the circumference of the stator assembly by the plurality of stator laminations at least partially between the radially-extending fins.04-05-2012
20120080964Coolant Channels for Electric Machine Stator - Embodiments of the invention provide an electric machine module including an electric machine. The electric machine includes a stator assembly with a plurality of stator laminations. The plurality of stator laminations include a plurality of different outer diameters and some of the plurality of stator laminations include at least two different radii. At least one circumferential coolant channel and at least one axial coolant channel can be defined by the plurality of stator laminations. The at least one circumferential coolant channel can be defined substantially around a circumference of the stator assembly and the at least one axial coolant channel can be defined substantially along an axial length of the stator assembly.04-05-2012
20120280581Electric Machine with Power Taps - Machines and motors with multiple three-phase AC power connections. A motor includes first, second, and third windings arranged to drive a rotator shaft. A first end of each winding is connected to a respective power input of a three-phase alternating current (AC) power source and a second end of each winding is connected to a neutral. The motor includes at least one intermediate tap connected to each of the first, second, and third windings at substantially equal respective distances between the neutral and the respective power inputs. The intermediate taps together provide a three-phase AC power output at a voltage that is less than the voltage of the three-phase AC power source.11-08-2012
20080296986BUSHING AND GENERATOR - In a bushing which has a terminal with a bend for connecting a conduit tube and a lead tube, the effect to cool the inner corner of the bend is enhanced. The bushing includes a conductive conduit tube, a conductive lead tube, and a terminal. The terminal has a bend and connects the conduit tube and the lead tube. Electric current and cooling gas flows in these tubes. A cooling means is provided for forced cooling of the inner corner of the bend of the terminal. One example of the cooling means is a guide vane which makes cooling gas flowing in the bushing come closer to the inner corner of the bend. A larger current can flow even when the bushing has the same size as a conventional one.12-04-2008
20130015731METHOD FOR ON-LINE DETECTION OF LIQUID AND POTENTIAL FOR THE OCCURRENCE OF RESISTANCE TO GROUND FAULTS IN ACTIVE MAGNETIC BEARING SYSTEMS - A resistance to ground monitoring system for a magnetic bearing is disclosed. The system includes a dummy bearing arranged in a cooling loop and having a dummy bearing coil made up of an electrical winding that is configured to detect the resistance to ground for the dummy bearing coil. The electrical winding is communicably coupled to a sensing device that monitors the resistance to ground for the dummy bearing coil. Since the magnetic bearing is arranged within the same cooling loop, the resistance to ground for the dummy bearing coil is indicative of a resistance to ground for the radial bearing coils of the magnetic bearing.01-17-2013
20130093271ELECTRIC DEVICE DRIVE ASSEMBLY AND COOLING SYSTEM FOR ELECTRIC DEVICE DRIVE - Drive assemblies for electric devices, such as vehicles, include an electric motor that includes a rotor assembly and a stator assembly positioned within the rotor assembly. The stator assembly is fixed to a stationary axle and includes a pole and a coil around the pole. The rotor assembly includes a housing to which a plurality of magnets are attached. The rotor assembly is supported on the stationary axle by bearings. A drive mechanism, such as a sprocket, pulley or gear is provided on the housing of the rotor assembly and rotates with the housing. In various embodiments, the stationary axle includes an internal bore for receiving coolant, a longitudinal rib within the internal bore, and longitudinal channels in its outer surface.04-18-2013
20130113310Paper Shredder - Provided is a paper shredder comprising a housing (05-09-2013
20110273038MOTOR RING AND SPLASH SHIELD ARRANGEMENT FOR A FAN ASSEMBLY - A fan assembly includes a motor ring and an electric motor supported by the motor ring and including an output shaft defining a central axis, a brush assembly, and a motor end shield having at least one aperture and disposed adjacent the brush assembly. The fan assembly further includes a splash shield adjacent the motor end shield. The splash shield includes a rim having an inner surface in facing relationship with the motor end shield and configured to direct an airflow between the motor end shield and the splash shield in a substantially radial direction toward the central axis, and configured to redirect the substantially radial airflow through the aperture in a direction having both a radial and an axial component with respect to the central axis.11-10-2011
20130147291ELECTRIC MACHINE - OVER-MOULDING CONSTRUCTION - An electric machine (06-13-2013
20130181554MOTOR ASSEMBLY AND PUMP APPARATUS - A motor assembly (07-18-2013
20110309699ELECTRIC MACHINE-COOLING - An electric machine (12-22-2011

Patent applications in class Circulation

Patent applications in all subclasses Circulation