EP3635850A1 - Verfahren und vorrichtung zum induktiven erwärmen eines stators oder ankers einer elektromaschine - Google Patents
Verfahren und vorrichtung zum induktiven erwärmen eines stators oder ankers einer elektromaschineInfo
- Publication number
- EP3635850A1 EP3635850A1 EP18740090.8A EP18740090A EP3635850A1 EP 3635850 A1 EP3635850 A1 EP 3635850A1 EP 18740090 A EP18740090 A EP 18740090A EP 3635850 A1 EP3635850 A1 EP 3635850A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- armature
- frequency
- inductor
- axially
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/02—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by endless chain or like apparatus
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/02—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by endless chain or like apparatus
- D06C3/023—Chains
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/10—Hooks, pin-blocks, or like apparatus
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0247—For chemical processes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/04—Sources of current
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/08—Control, e.g. of temperature, of power using compensating or balancing arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
- H05B6/102—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces the metal pieces being rotated while induction heated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/38—Coil arrangements specially adapted for fitting into hollow spaces of workpieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/40—Establishing desired heat distribution, e.g. to heat particular parts of workpieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/44—Coil arrangements having more than one coil or coil segment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
- H05B2206/022—Special supports for the induction coils
Definitions
- the invention relates to a method and a device for inductive heating of a stator or armature of an electric machine, in particular before and during a trickle impregnation thereof. Moreover, the invention relates to an impregnating device designed for this purpose.
- the term “electric machine” or “electric machine” means only electric motors and electric generators, which convert electrical energy into mechanical energy or mechanical energy into electrical energy.
- the winding of such an electric machine can be designed as a coil winding or as a so-called bar winding.
- electrical machines with bar windings are currently regarded as trend-setting in the automotive industry, the invention should be usable both with regard to a method and with respect to a device for electric machines of all winding types. If the terms “winding head” and “winding” are used below, therefore, no definition is made with regard to coil winding or bar winding.
- rod windings for the production of the winding of high-performance electrical machines.
- These rod windings consist of a large number of solid rods of a highly electrically conductive material.
- the rods are connected to each other after their insertion into the grooves of anchor or stator laminations in such a way that they form at least one winding strand depending on the design.
- the rods used for the construction of a rod winding can have a largely U-shaped geometry, in which two parallel legs are inserted by means of a connecting leg. are connected with each other.
- the cross-sectional geometry of the legs is rectangular.
- Such rods are also known as so-called hairpins.
- the two mutually parallel legs of the U-shaped rods can be used in an armature or stator lamination in radially offset grooves, the known from GB 200,469 B U-shaped rods in the region of those connecting legs from an offset range in which the U shaped rod is wound in itself.
- the stator or the armature is heated to and clamped with respect to its longitudinal axis in the impregnating device and rotated about this longitudinal axis.
- the stator or armature can be inclined or horizontally aligned.
- a initially liquid at room temperature resin dripped.
- the synthetic resin may consist of one or more components, for example a base resin and a hardener.
- the volume flow, with which the still liquid synthetic resin is applied to the stator or armature, is matched to the respective absorption capacity of the same.
- the synthetic resin penetrates into the spaces between the winding wires and into the interspaces between the winding wires and the laminations of the laminated core and fills these gaps completely.
- the individual sheets of Blechpakts are permanently connected to each other, for example, with a baked enamel or by welding.
- the resin Upon subsequent heating of the stator or armature, the resin initially gels and thereby loses its tendency to drip so that the stator or armature will then usually be placed horizontally to prevent sagging of the resin to the otherwise lower part of the stator or armature.
- thermoset meets all mechanical and electrical insulation requirements that are placed on a stationary or rotating electrical machine.
- the stator or armature is heated to a so-called trickling temperature prior to the start of the trickling operation and kept at this temperature during the trickling operation.
- the trickle temperature may be, for example, between 90 ° C and 120 ° C depending on the resin used.
- a curing temperature which is also resin-dependent, for example, between 150 ° C and 170 ° C. This curing temperature is then maintained for a predetermined period of time to allow for complete cure after initial gelation of the resin.
- the stator or armature is cooled to room temperature and provided for further manufacturing operations to produce the electric machine.
- the heating of the stator or armature to the trickle temperature and the curing temperature can be carried out in a suitable oven.
- DE 1 212 204 A and DE 19 19 642 A it is already known to achieve the heating of the stator or armature by means of an electrical heating current, which is passed through the windings of the stator or armature. Since a simple passage of a heating current through the windings can lead to large deviations of the achievable actual temperatures from the desired target temperatures, it has been proposed to achieve and maintain the desired temperatures to ensure by controlling the heating current. In this case, the knowledge was used that increases in a winding, the ohmic resistance with increasing temperature, so that can be closed by the ohmic resistance to the temperature of the winding.
- the invention is therefore based on the object to provide a method and apparatus for faster heating and better keeping warm a stator or armature with which ultimately the impregnation of a stator or armature of an electric machine with a thermosetting resin faster, more energy-efficient and cost-effective than before can.
- an impregnating device is to be presented, in which said device is integrated.
- stator or armature of an electric machine consists of different components, which are different electrically conductive and therefore can be heated inductively differently.
- these are in particular the sheet metal package consisting of an iron material, for example windings consisting of copper, the insulator to be arranged between the winding wires and the laminated core, as well as the synthetic resin to be introduced in the dropping process into the stator or armature.
- the winding wires in the region of the axial end-side winding heads of the armature or stator are arranged radially outwardly partially exposed, while the winding wires are arranged in the region of the laminated cores between them and largely radially inward.
- the invention was also based on the finding that the penetration depth of an electromagnetic field into a component is also dependent on its frequency.
- Such an electromagnetic field must undergo an alternating change in its orientation in order to produce an inductive effect in a stationary stator or armature.
- the penetration depth of such a field increases with decreasing frequency. Consequently, with a low-frequency or medium-frequency electromagnetic field can penetrate deeper into a component and there generate an inductive heating than with a high-frequency electromagnetic field.
- a low-frequency electromagnetic field is defined as one that oscillates at a frequency of less than 8 kHz.
- the invention was based on the finding that the winding heads of a stator or armature produced from copper wire can be heated inductively very well with a high-frequency field, while the iron-containing sheets of the laminated core of a stator or armature heat inductively inductively with a medium-frequency field to let.
- the invention initially relates to a method for inductively heating and keeping warm a stator or armature of an electric machine, in particular before and during a trickle impregnation thereof, wherein the inductive heating takes place by means of electromagnetic fields of different frequency.
- the electromagnetic fields of different frequency simultaneously or temporally successively act on the stator or armature. It may also be alternatively or additionally provided that the fields of different oscillation frequency act on different axial regions of the stator or armature. It is also judged to be advantageous if the electromagnetic fields used oscillate in a mid-frequency range between 8 kHz and 60 kHz and in the high-frequency range between 61 kHz and 500 kHz (including the range limits), the frequency of the respective field acting on the radial and inductively heating Penetration depth of the same is tuned in the stator or armature. For stators or anchors with a relatively large diameter, for example, more than 0.5 meters, and electromagnetic fields with a frequency of less than 8 kHz can be used advantageously.
- stator or armature acts on the stator or armature at least a first electromagnetic field, which mainly leads to the inductive heating of its ferrous components, and that on the stator or armature at least a second electromagnetic field with a mainly inductive heating of its copper-containing components tuned Frequency acts.
- a medium-frequency electromagnetic field acts on an axially central portion of the stator or armature, in which a laminated core thereof is arranged as an iron-containing component, and that on the two axial ends of the stator or armature, where where winding heads thereof as are arranged copper-containing component, in each case a high-frequency alternating field acts on the stator or armature.
- the electromagnetic fields of different frequency are moved back and forth coaxially or parallel to the longitudinal axis of the stator or armature. This is done by a preferably coaxial translation of an inductor over the length of the region of the stator or armature to be heated. In a non-coaxial arrangement of the electromagnetic fields in relation to the longitudinal Axis of the stator or armature is this to its uniform heating just to rotate about this longitudinal axis.
- Such an inductor consists essentially of an annular or helical bobbin whose spiral ends merge into two radial webs. These two radial webs are connected to a coupling piece, which electrically isolates the radial webs against each other and carries.
- the coupling piece is connected directly or via a coaxial transformer with the actuator of a Axialaktuators, by means of which the inductor is linearly movable relative to the longitudinal axis of the stator or armature back and forth.
- the radial webs and the annular or helical bobbin preferably consist of a highly electrically conductive tube, for example copper, through which a cooling liquid can be passed.
- the translational movement of the inductor can be uniform or accelerated between the points of motion reversal. It is also possible to use a movement pattern previously determined to be optimal, which specifies sections of lower or higher speed for the inductor along a translation path.
- the outer diameter of the inductor must be so small that it also can not move coaxially but axially parallel within the stator and to its longitudinal axis.
- the stator or armature is rotated on the latter around its longitudinal axis during the action of the electromagnetic fields of different frequency.
- a second embodiment provides that electromagnetic fields having a different frequency are generated with a plurality of frequency generators and with only one inductor, and that these differently frequency fields act on the stator or armature to inductively heat them.
- the different frequency electromagnetic fields are concentrated at least with respect to their axial extent.
- the medium-frequency electromagnetic field is concentrated on the region of the stator or armature in which its iron-containing laminated core is arranged, and that two high-frequency electromagnetic fields are concentrated on the two axial ends of the stator or armature, where this his having copper-containing winding heads.
- the medium-frequency electromagnetic field is preferably concentrated radially inward, and the two high-frequency electromagnetic fields are concentrated radially inward and axially outward.
- a certain shielding on the one hand and a certain increase in the effect of axially adjacent electromagnetic fields of different frequency can also be generated by means of destructive or constructive interference in the interference region thereof.
- the medium-frequency electromagnetic field is shielded against the two high-frequency electromagnetic fields, for example by means of separate shielding between them.
- These shielding elements are preferably actively cooled with a cooling fluid.
- electromagnetic fields of the same or different frequency act from radially inward and / or radially outward on the latter in order to inductively heat the components thereof.
- the radially acting from the outside electromagnetic field would be generated by a stator coaxially or axially parallel and annular surrounding the first inductor, while at least a second electromagnetic field is generated by at least one second inductor.
- a holder can be passed axially, which rotatably holds the stator about its longitudinal axis.
- the vorchtungs concernede object has been solved by a heating device for inductive heating and keeping warm a stator or armature of an electric machine, in particular before and during a trickle impregnation thereof, which has at least one electromagnetic inductor arranged coaxially or axially parallel with respect to the longitudinal axis of the stator or armature is and by means of which it is inductively heated, wherein the at least one inductor or the plurality of inductors are designed to generate at least two electromagnetic fields of different frequencies.
- At least two electromagnetic fields with different frequencies can be generated by means of this heating device, with their respective frequencies being adjustable so that they can be optimally achieved with these different materials as well as different radial depths of the stator or armature with respect to their inductive heating.
- the complete heating of all components of the stator or armature is faster and more uniform than before, so that the process duration for trickle impregnation of the same can be greatly reduced.
- the manufacturing costs are reduced as a result.
- this heating device can be provided that the single inductor coaxial or axially parallel and radially within the stator or coaxial or axially parallel and radially outside the armature is arranged, that this single inductor over the entire axial length of the stator or armature out and is arranged movably, and that in each case an electromagnetic field can be generated with this single inductor in the region of the two axial ends of the stator or armature, which differ in terms of oscillation frequency of an effective between these two ends electromagnetic field.
- the stator or armature has two winding heads made of copper-containing winding wires at the axial end and a laminated core and winding wires in an area arranged axially therebetween. These areas of the stator or armature can not be optimally inductively heated due to the materials arranged there and due to their installation depth with only one electromagnetic field.
- the use of two or more electromagnetic fields of different frequencies is better suited for this purpose because they are each optimized. times to those components of the stator or armature and their radial installation depth can be adjusted.
- an advantageous further development of the said heating device provides that a high-frequency electromagnetic field can be generated by means of the single inductor in the region of the axial ends of the stator or armature and a medium-frequency electromagnetic field can be generated in the intermediate region therebetween.
- the single inductor of a single frequency generator alternately or simultaneously with a medium-frequency or high-frequency electrical voltage can be supplied.
- the single inductor can be supplied alternately or simultaneously by a medium-frequency generator with a medium-frequency electrical voltage or by a high-frequency generator with a high-frequency electrical voltage.
- a preferred third embodiment of the heating device provides that these three axially movably arranged inductors surrounding axial portions of the stator or armature coaxially or axially parallel, that a central inductor is disposed over a central axial portion of the stator or armature, in which an iron-containing Laminated core of the stator or armature is arranged, that two axially end-side inductors are arranged in the region of the two axial ends of the stator or armature, in which copper-containing winding heads of the stator or armature are arranged that with the central inductor, a medium-frequency electromagnetic field can be generated, and that in each case a high-frequency electromagnetic field can be generated with the two axial end inductors.
- the three inductors are each supplied by a separate frequency generator with electrical voltage.
- the respective inductor has an annular or helical coil body and a two-part radial web, that the respective radial webs are each connected to a coupling piece, and that these coupling pieces are each at least indirectly connected to an associated one Axialaktuator are connected, by means of which the inductor together with the radial webs coaxial or parallel to the longitudinal axis of the stator or armature is movable back and forth.
- the diameter of the bobbin of the inductor is exactly adapted to the inner diameter or outer diameter of the stator or armature.
- this optimum is not always achievable from an economic point of view, because ideally for each type of stator or armature, or to its inner diameter and / or outer diameter, an individual inductor would have to be provided which fits exactly.
- the proposed arrangement of the stator or armature which is offset slightly relative to the coaxial position, may be provided in relation to the coil. be provided body of the respective inductor. The rotation of the stator or armature during operation of the inductor compensates for the effects of a partial, somewhat excessive radial gap resulting from the eccentric arrangement of the stator or armature.
- a coaxial transformer is attached to the coupling piece of the inductors, to which a medium-frequency or high-frequency electrical voltage of the associated frequency generator is passed, transformed there and guided to the bobbin of the respective inductor.
- the electrical lines between the respective frequency generators and the associated inductors are preferably guided in hose lines, which are traversed by a coolant.
- the spatially comparatively closely arranged inductors can be caused by mutual interference an adverse transformer effect in operation.
- the high-frequency electromagnetic fields couple into the medium-frequency electromagnetic field, so that the voltage induced there can lead to damage of electronic components (for example, transistors).
- a suppressing means which can generate, for example, a suppressive induction that is complementary to disturbing induction, so that the two mutually compensate each other. Since the medium frequency inductor is mainly affected by spurious induction from the two high frequency electromagnetic fields, it is sufficient if the interference suppression means is integrated in the electrical lines which lead from the coaxial transformer to the medium frequency generator in the region of the medium frequency inductor.
- the radial webs of the three inductors mentioned are to minimize the mutual electromagnetic interference and the structurally favorable arrangement of the Axialaktuatoren preferably by 120 ° with respect to the longitudinal axis of the stator or Ankerns offset aligned. If required, however, other angular positions can also be used.
- the radial webs can also be designed as angled components.
- At least one field concentrator which consists of at least one iron-containing body, is arranged radially on the outside of the at least one inductor.
- This field concentrator is preferably constructed and arranged such that by means of this the medium-frequency electromagnetic field is concentrated radially inward.
- the at least one inductor is designed to be arranged radially inside a stator, the latter preferably has at least one field concentrator made of an iron material on its radial inner circumferential surface, which concentrates the alternating field of the inductor radially and axially outside.
- the field concentrators there are constructed and arranged in such a way that the high-frequency electromagnetic field generated by them is concentrated radially inward and axially outward. In this way, on the one hand, a good inductive effectiveness is achieved at the winding heads of the stator or armature, and, moreover, an undesired interaction of the high-frequency electromagnetic fields with the axially intervening medium-frequency electromagnetic field is minimized.
- a Feldabcanbauteil is arranged, which this against too strong coupling of the high-frequency electromagnetic field and thus protects against excessive heating.
- These field shielding components are preferably made of copper. They also have open-ended cooling channels, through which a cooling fluid can be passed.
- the field concentrators and the Feldabcanbaumaschine are designed and arranged such that constructive and / or destructive interference of the electromagnetic fields can be generated by means of which the heating power at the axial sections of the Optimize stator or armature for specific iron (laminated core) and / or copper-specific (winding).
- the inductors for generating the medium-frequency electromagnetic field and the two high-frequency electromagnetic fields axially movable back and forth, is provided with respect to the Feldabcanbaumaschinener that axially fixed during operation of the heating device and coaxially over the end edges of the laminated core of the stator or the armature are arranged.
- the actuator of a Axialaktuators is connected via a coaxial transformer with the at least one radial web of an inductor.
- an electro-technical interference suppression means is arranged or formed, by means of which electronic components of the medium frequency generator can be protected.
- a stator effective inductors designed as so-called Doppelinduktoren.
- These double inductors each have two radial, mutually offset, annular or helical coil bodies, to each of which a medium-frequency or high-frequency electrical voltage is applied.
- the inductors generate electromagnetic fields in interaction with the materials of the stator.
- the radially inner bobbin is designed in terms of its dimensions so that it can be arranged in the cylindrical cavity of the stator and in this contact axially moved back and forth.
- the radially outer bobbin is designed with respect to its dimensions such that it can be moved radially over the stator without contact axially back and forth.
- an outer field concentrator is arranged on the radially outer side of the radially outer coil body, which concentrates an electromagnetic field radially inward and optionally also axially outward, and that on the radially inner side of the radially inner coil body an inner field concentrator is arranged, which concentrates an electromagnetic field radially outward and optionally also axially outward.
- stator should be rotatably held in the heating device. Since the holding of the stator is preferably to be done radially inward on this, is provided according to an advantageous development that through the radially inner bobbin at least one Doppelinduktors a component of a holding and driving device can be passed, by means of which the stator is held drivable about its longitudinal axis.
- a double inductor and, in addition, a second inductor (as described above) for heating the stator is arranged radially above it.
- the second inductor sweeps over while reciprocating moves an area between the axial ends of the stator.
- the free end of the stator that is, where no end-side Doppelinduktor is arranged, connected to an element of a holding and driving device.
- the two annular or helical coil bodies can be arranged offset in the same axial section or axially offset from one another.
- An arrangement of the two bobbin in the same axial portion is advantageous if both the radially inner and the radially outer bobbin to heat the same area of the stator or to maintain a temperature reached there.
- Such a region may for example be a coil head of a stator.
- the radially inner coil body of the double inductor is intended to heat another region of the stator, then it can be provided that at least one of the two axially-end double inductors is configured such that its radially inner coil body is arranged axially closer to a middle inductor placed axially therebetween is as the respective radially outer bobbin.
- an impregnating device which has a frame, a rotatably mounted on the frame about its longitudinal axis recordable stator or armature of an electric machine, a feeder for supplying a liquid and thermosetting resin and a device for heating the stator or armature, and which has at least one electromagnetic inductor which is arranged coaxially or axially parallel to the stator or armature, wherein said at least one inductor or the plurality of inductors is or are arranged for generating at least two electromagnetic fields of different frequency.
- This impregnating device may also have further of the above-mentioned features, corresponding to at least one of the device requirements relating to the heating device.
- FIG. 1 is a schematic representation of an impregnating device in which a heating device is integrated with the features of the invention according to a first embodiment
- FIG. 2 shows a schematic representation of a heating device according to the invention according to a second embodiment
- FIG. 3 shows a schematic representation of a heating device according to the invention according to a third embodiment
- FIG. 4 is an exploded perspective view of a heating device similar to that of FIG. 3, but with shielding elements,
- FIG. 5 shows the heating device according to FIG. 4 in a partial axial section together with an armature of an electric machine arranged therein, FIG.
- FIG. 6 shows the heating device according to FIG. 4 in a perspective axial section
- FIG. 7 is a heating device similar to that of FIG. 4 in a longitudinal section, but without shielding
- FIG. 8 shows the heating device according to FIG. 4, but together with a stator of an electric machine arranged therein and with shielding components, FIG.
- FIG. 9 is an axially exploded view of a three inductors having heating device, of which the two axially end inductors each have two radially spaced bobbin, and
- FIG. 10 shows the heating device according to FIG. Fig. 9 in a schematic longitudinal section.
- 1 shows a first embodiment of a heating device 1 a having the features of the invention, which is integrated in an impregnating device 50.
- the heating device 1 a is used in the example shown for the fastest possible and uniform heating and keeping warm a still unfinished armature 3, an electric machine.
- the impregnating device 50 includes a frame 51, to which inter alia a feeding device 52 for a synthetic resin 55, an axial actuator 1 1 and a frequency generator 13 are fixed.
- the feeder 52 has a storage tank, not shown, and at least one pump not shown.
- the armature 3 can already be rotated about its longitudinal axis in order to achieve the most uniform heating possible. As soon as the armature 3 is completely filled with the synthetic resin 55, it is heated to a curing temperature of, for example, 170 ° C. at which the synthetic resin 55 cures to a duroplastic.
- the heating device 1 a For heating the armature 3 to the trickle temperature and later on the curing temperature, the heating device 1 a is used, which can heat the armature 3 inductively.
- This heating device 1 a has the already mentioned Axialaktuator 1 1, the actuator 10 is connected in the form of a coupling rod with a coupling piece 29.
- the respective actuator 10 of the axial actuator 11 can also be connected directly to the coaxial transformer 59 of the inductor 8.
- the coupling piece 29 are via a coaxial transformer 59 two electrically conductive, wire, tubular or hose shaped electrical lines 14, 15 out, which are cooled by a cooling device, not shown, by a cooling fluid.
- the electrical lines 14, 15 are connected at the other end to the already mentioned frequency generator 13, which sends a suitable electric voltage and current with respect to the electric current through them.
- the coupling piece 29 is also connected to a two-armed radial web 9 of an inductor 8, which is coupling piece remote formed into an annular or helical coil former 49.
- the bobbin 49 and the two-armed radial web 9 consist of one piece of a helically bent copper tube, which can be flowed through by a cooling liquid.
- Radially inside the bobbin 49, the armature 3 to be tempered is received in the example shown in FIG. 1 to form an annular gap.
- the bobbin 49 is electrically connected via the two-armed radial web 9 and the coupling piece 29 with said electrical leads 14, 15, so that an electrical voltage can be applied to the bobbin 49.
- the bobbin 49 of the single inductor 8 is moved coaxially with the longitudinal axis 7 of the armature 3.
- the double arrow 12 in Fig. 1 illustrates the two directions of movement. Since the electrical lines 14, 15 are designed to be flexible, they make the axial movement unscathed.
- the single inductor 8 is periodically moved back and forth coaxially over the radial outer circumferential surface of the armature 3 for inductive heating to the aforementioned trickling temperature and for keeping the said hardening temperature constant. This is done by a preferably coaxial translation of the inductor 8 over the length of the region of the stator or armature 3 to be heated.
- the translational movement of the inductor 8 can be uniform or accelerated between the axially end-side movement reversal points. It may also be a previously determined as optimal movement be used, which predetermines along a translation distance sections with lower or higher speed for the inductor 8.
- stator 8 it is possible to deviate from a translation of the inductor 8 that is coaxial with the longitudinal axis 6, 7 of the stator 2 or armature 3, so that, as a result, an eccentric translational movement relative to the longitudinal axis is performed.
- stator 2 armature 3 and / or inductor 8 whose inductive heating can be further optimized.
- this makes it possible to use identical inductors for stators or armatures 3 of different diameter, without having to have individual inductors available for each type of construction.
- the single inductor 8 during its operation in the region of the two axial ends of the armature 3, ie where its winding heads 5a, 5b are formed, respectively generates an electromagnetic field, which in each case has a higher frequency than a third electromagnetic field acting in the middle region of the armature 3 formed between these two winding heads 5a, 5b.
- the iron-containing sheets of a laminated core 4 are arranged.
- the winding wires are made of a material having other electromagnetic properties, such as copper or a copper alloy.
- the two axially generated electromagnetic fields and the axially centrally generated electromagnetic field are adjusted in terms of vibration frequency so that the main components of the armature 3 are each heated optimally fast and uniformly inductive. Therefore, when the single inductor 8 is in the region of the sheet metal pact 4, the single frequency generator 13 generates a medium-frequency voltage by means of which a medium-frequency electromagnetic field is generated by the single inductor 8. However, as soon as the single inductor 8 is in the region of one of the two winding heads 5a, 5b, the single frequency generator 13 generates a high-frequency voltage, by means of which a high-frequency electromagnetic field is generated by the single inductor 8.
- Fig. 1 those two areas in which a high-frequency electromagnetic field acts on the armature 3, provided with the reference numeral HF, while the axially interposed region in which a medium-frequency field acts on the armature 3, provided with the reference numeral MF is.
- the high-frequency electromagnetic field does not act radially deep into the armature 3
- the copper material of the winding leads freely emerging in the winding heads 5a, 5b can be inductively heated thereby in a particularly effective manner.
- the medium-frequency electromagnetic field can penetrate radially comparatively deep into the armature 3, and it can inductively couple energy particularly advantageous inductively in the ferrous sheets of the laminated core 4 of the armature 3 and converted there into heat.
- Fig. 2 shows a heating device 1 b, which also only an axial actuator 1 1 with actuator 10, a coupling piece 29, a two-armed radial web 9 and only a single inductor 8 with a helical bobbin 49 has.
- the helical coil body 49 of the single inductor 8 coaxially surrounds the armature 3, and the inductor 8 and its coil body 49 are coaxial with the longitudinal axis 7 of the armature 3 while maintaining a not visible in Fig. 2 annular gap on this back and forth.
- the heating device 1b shown in FIG. 2 has two frequency generators 16a, 16b.
- the first frequency generator 16a can generate a medium-frequency electrical voltage and the second frequency generator 16b a high-frequency electrical voltage.
- the electrical voltages of the two frequency generators 16a, 16b are conducted via a double-acting coaxial transformer 60 to the bobbin 49 of the single inductor 8, wherein this coaxial transformer 60 is attached to a coupling piece 29.
- the single inductor 8 or its bobbin 49 is successively subjected to one of the two medium-frequency or high-frequency electrical voltages, so that this single inductor 8 generates two electromagnetic fields of different frequencies.
- the medium-frequency voltage of the first frequency generator 16a is then conducted to the single inductor 8, if this is in the region of the laminated core 4 or axially between the two winding heads 5a, 5b.
- the high-frequency voltage of the second frequency generator 16b is then conducted to the single inductor 8 when it is in the region of the respective winding heads 5a, 5b. Minor positioning inaccuracies are not particularly harmful here, since all electrically conductive areas of the armature 3 contribute to the inductive heating of the same, but with different effectiveness.
- the two frequency generators 16a, 16b can be integrated in a single device, which has a switching device for switching between the two frequency generators 16a, 16b, and which has common electrical supply lines via the coaxial transformer 60 is connected to the single inductor 8.
- This coaxial transformer 60 is then formed as a double coaxial transformer.
- FIG. 3 third embodiment of the features of the invention having heating device 1 c for a stator 2 or armature 3 are a total of three individual inductors 18, 21, 24 are provided, each axially movable by means of a separate Axialaktuators 17, 20, 23 are arranged.
- the three Axialaktuatoren 17, 20, 23 each have an actuator 10, which are connected via a respective coupling piece 29, 30, 31, each with a two-armed radial web 26, 27, 28 of the three inductors 18, 21, 24.
- the three inductors 18, 21, 24 each have a helical coil body 49a, 49b, 49c which are arranged coaxially over an armature 3.
- Each of the three inductors 18, 21, 24 is supplied during operation by a respective separate frequency generator 19, 22, 25 with a medium-frequency or high-frequency electrical voltage, so that the coil body 49 a, 49 b, 49 c can generate electromagnetic fields with different frequencies.
- the three frequency generators 19, 22, 25 via electrical lines 14, 15 are each connected to a coaxial transformer 56, 57, 58, which are attached to the respective associated coupling piece 29, 30, 31 of the inductors 18, 21, 24 , From there, the two-armed radial webs 26, 27, 28 lead to the bobbins 49a, 49b, 49c of the three inductors 18, 21, 24.
- an electronic interference filter 48 is arranged in the electrical line 14, 15 between the middle frequency generator 19 and the Mittelfrequenzinduktor 18 by means of which the electronic components of the medium frequency generator 19 are protected from the effects of the two high-frequency alternating fields.
- the axially middle inductor 18 in the laminated core 4 of the armature 3 generates a medium-frequency electromagnetic field whose active region MF covers almost the entire axial length of the armature 3.
- the first inductor 18 by means of the first Axialaktuators 17 coaxial or axially parallel over the cylindrical outer peripheral surface of the armature 3 reciprocates ,
- the two axially end, in the region of the two winding heads 5a, 5b arranged inductors 21, 24 are moved axially during operation of the heating device 1c by means of the associated axial actuators 20, 23.
- these two inductors 21, 24 but only the respective associated winding heads 5a, 5b.
- a collision of the three actuators 18, 21, 24 is of course avoided.
- the two inductors 21, 24 arranged coaxially over the winding heads 5a, 5b each generate a high-frequency electromagnetic field whose respective effective range HF is marked in FIG. 3 by double arrows.
- these high-frequency electromagnetic fields are optimally suited to inductively heat the copper wires of the two winding heads 5a, 5b. From there heat passes through the winding wires by heat conduction into the interior of the armature. 3
- the inventively designed heating devices 1 a, 1 b, 1 c according to Figures 1 to 3 all have the advantage that several electromagnetic fields at different locations of a stator 2 or armature 3 can act on this. In this way, the different materials from which a stator or armature is made and which are also arranged in different radial depth in the stator or armature, each optimally heated inductively. In contrast, so far in generic heating devices, the stator or armature in an oven as a whole or by heating its winding wires for the most part indirectly brought to a desired trickle temperature and / or maintained at a certain curing temperature. In the heating device 1 c According to FIG.
- the heating of the stator 2 or armature 3 until reaching the gelling temperature and the curing temperature is very fast and homogeneous.
- thermosetting plastic formed by heating from the instaked synthetic resin is particularly uniformly formed in the entire stator or armature due to the rapid and uniform reaching of the individual temperature ranges for the respective manufacturing process steps and thus consistently has the same properties, whereby this to an optimum product quality of the stator or armature contributes.
- heating devices 1 a, 1 b, 1 c are always shown with always three inductors 18, 21, 25 in different views, which essentially have the structure and operation of the heating devices 1 c of FIG. 3. Therefore, only the further developments will be discussed below.
- Figures 4 to 6 show in an exploded view, in an axial section and in a partially cutaway view, the three mentioned inductors 18, 21, 24 of the heating device 1 c of FIG. 3, which are drawn schematically simplified in terms of their construction, in the area of those annular Spool bodies 45, 46, 47, however, each have a hollow-cylindrical receiving opening 41, 42, 43.
- the illustrated armature 3 or a stator 2 is used, in such a way that the bobbin 45 of the Mittelfrequenzinduktors 18 coaxially or axially parallel surrounds at least an axial portion of the laminated core 4 of the armature 3, and that the two Hochfrequenzinduktoren 21, 24 surround at least one axial section of the two winding heads 5a, 5b of the armature 3 arranged axially at the end coaxially or axially parallel.
- the shielding elements 32, 33, 34, 35 are arranged axially on both sides of the Mittelfrequenzinduktor 18, ie axially between the Mittelfrequenzak- tuator 18 and the two Hochfrequenzinduktoren 21, 24th
- the arrangement of the shielding elements 32, 33, 34, 35 is designed so that they are positioned radially over the two winding head near ends or axial edges of the laminated core 4.
- the shielding elements 32, 33, 34, 35 are able to protect the axially end edges of the laminated core 4 from excessive coupling of the electromagnetic fields and thus from excessive heating.
- the shielding elements 32, 33, 34, 35 are preferably made of copper or a copper alloy. They have a largely rectangular geometry with a circular arc-shaped recess 39 which is arranged closely above the surface of the armature 2. In this case, the radially inner and adjacent sections of the associated shielding elements 32, 33; 34, 35 vorzugswiese gapless together.
- the shielding elements 32, 33, 34, 35 each have a feed opening 40a and a discharge opening 40b, through which a cooling fluid for active cooling of the shielding elements 32, 33, 34, 35 can be passed.
- FIG. 7 shows the three already mentioned inductors 18, 21, 24 with their coil bodies 45, 46, 47, which are shown schematically, which are arranged coaxially over a not yet finally finished armature 3 of an electric machine.
- a field concentrator 36, 37, 38 is arranged on the inductors 18, 21, 24 radially outside, ie outside the bobbin 45, 46, 47.
- the field concentrators 36, 37, 38 are each preferably made of a ferrous material.
- the attached to the axially central inductor 18 and a circular or circular segment-shaped geometry having field concentrator 36 is constructed and arranged so that by means of this the medium-frequency electromagnetic field of this inductor 18 is concentrated radially inward, so that it is the sheets of the laminated core 4 of the armature. 3 also achieved in the greatest possible radial depth.
- the field concentrators 37, 38 fastened to the two axial end-side inductors 21, 24 are constructed and arranged in such a way that they concentrate the high-frequency electromagnetic field of these inductors 21, 24 radially inward and axially outward , As a result, a potentially harmful influence of the high-frequency electromagnetic fields in the electronic components of the medium-frequency generator is avoided. held ring, and also the high-frequency electromagnetic fields, the respective associated winding head 5a, 5b heat particularly effectively inductively.
- FIG. 8 shows a partial schematic longitudinal section through a stator 2, which can be inductively heated by means of the three inductors 18, 21, 24 already described in order to place a synthetic resin in it and allow it to harden there.
- the three inductors 18, 21, 24 are arranged coaxially to the longitudinal axis 6 of the stator 2 radially beyond its outer circumferential surface and by means of the already described Axi alaktuatoren 17, 20, 23 axially movable back and forth.
- the inductors 18, 21, 24 each have, radially outwardly, a field concentrator 36, 37, 38, by means of which, as just described, the electromagnetic fields generated by the inductors 18, 21, 24 can be concentrated in desired directions.
- each two shielding members 32, 33; 33, 34 are arranged, by means of which the axially end edges of the laminated core 4 can be shielded from excessive energy coupling by the high-frequency electromagnetic fields.
- the shielding elements 32, 33; 33, 34 are arranged in this example recognizably aligned with the axial edges of the laminated core 4.
- the field concentrators 36, 37, 38 and the Feldabcanbaumaschine 32, 33; 34, 35 may in this case be designed and arranged such that constructive and / or destructive interferences of the interacting electromagnetic fields can be generated by means of which the heating power at the axial sections of the stator 2 or armature 3 is iron-specific (laminated core) and / or copper-specific (winding ) optimize.
- FIGS. 9 and 10 each show, in different views, a heating device 1d having the features of the invention, which has two inductors which are effective axially on a stator 2 and which are designed as so-called double inductors 70, 80.
- Axial between these two double inductors 70, 80 is an inductor 18 is arranged, which has the already described design according to Figures 1 to 8.
- this middle inductor 18 has a coil body 45 which is shown annularly here, but in detail is annular or helical, often with only one turn, the hollow cylindrical receiving opening 41 of which can be moved radially over the winding 4 of the stator 2.
- the bobbins 74, 76; 84, 86 circumferentially formed not closed by a respective radial gap, of which only two radial gaps 91, 92 are designated in Fig. 9.
- the electrical conductors of the bobbin 74, 76; 84, 86 in each case a medium-frequency and / or high-frequency electrical current for generating electromagnetic fields can be transmitted.
- the ends of the electrical conductors of the radially inner and radially outer bobbins 74, 76; 84, 86 are the same pole in each case in an axially aligned lead portion 61, 62, 63, 64, 66, 67, 68, 69 on. Then are each two gleichpolige supply line sections 61, 62; 63, 64; 66, 67; 68, 69, each with one of two radial webs 71, 72; 81, 82 connected.
- radial webs 71, 72; 81, 82 bobbin remotely via coupling pieces, not shown, are directly or indirectly electrically connected to the already described frequency generators.
- the radial webs 71, 72; 81, 82 are also, as already described in connection with the other notedsbeetter, connected via a coaxial transformer or a coupling piece with the actuator 10 of a respective associated Axialaktuators comprising the radial webs 71, 72; 81, 82 and thus ultimately the bobbin 74, 76; 84, 86 can move axially back and forth.
- the two bobbins 74, 76; 84, 86 of the two double inductors 70, 80 are each designed such that by means of them the stator 2 can be driven simultaneously by both Dial inside and can be heated inductively from the radial outside.
- each of the radially inner bobbin 74; 84 designed with respect to its dimensions so that it can be arranged in the cylindrical cavity 65 of the stator 2 and in this contact axially moved back and forth.
- the radially outer bobbin 76, 86 is formed in terms of its dimensions so that it can be moved radially over the stator 2 without contact axially back and forth.
- an outer field concentrator 78, 88 is arranged, which concentrates an electromagnetic field radially inward and axially outward, and that at the radially inner side of the respective radially inner bobbin 74, 84, an inner field concentrator 77, 87 is arranged, which concentrates an electromagnetic field radially and axially outside.
- a component 79 of a holding and driving device can be passed through the radially inner, annular coil body 74, by means of which Stator 2 is rotatably held about its longitudinal axis 6.
- the two annular bobbins 74, 76; 84, 86 of a double inductor 70, 80 as shown in the same radial plane or in the same axial section or in different radial planes and thus axially spaced from each other.
- a particularly targeted heating for example, the axial end winding heads 5a, 5b of the stator 2 possible.
- the stator 2 can be heated simultaneously from radially inside and radially outside at different locations.
- the two axially end double inductors 70, 80 are formed such that their radially inner bobbin 74; 84 are disposed closer to the central intermediate inductor 18 disposed axially therebetween than the respective radially outer bobbins 76, 86.
- a heating device (first embodiment)
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Abstract
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DE102017005532.7A DE102017005532A1 (de) | 2017-06-10 | 2017-06-10 | Verfahren und Vorrichtung zum induktiven Erwärmen eines Stators oder Ankers einer Elektromaschine |
PCT/DE2018/000171 WO2018224066A1 (de) | 2017-06-10 | 2018-06-05 | Verfahren und vorrichtung zum induktiven erwärmen eines stators oder ankers einer elektromaschine |
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EP (1) | EP3635850A1 (de) |
KR (1) | KR102436060B1 (de) |
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DE102017005532A1 (de) | 2017-06-10 | 2018-12-13 | copperING GmbH | Verfahren und Vorrichtung zum induktiven Erwärmen eines Stators oder Ankers einer Elektromaschine |
DE102020004905A1 (de) | 2020-08-12 | 2022-02-17 | Hedrich Gmbh | Multiples Temperierverfahren für Werkstücke mittels Triplexofen |
CN111931389B (zh) * | 2020-10-12 | 2021-01-01 | 湃方科技(天津)有限责任公司 | 一种旋转型设备运行正异常状态分析方法、装置 |
DE102021214479A1 (de) | 2021-12-16 | 2023-06-22 | Zf Friedrichshafen Ag | Aushärtevorrichtung und Verfahren zum Behandeln einer Rotorrohbandage mindestens eines Rotors |
DE102022102821A1 (de) * | 2022-02-07 | 2023-08-10 | Voestalpine Automotive Components Dettingen Gmbh & Co Kg | Verfahren und Vorrichtung zum Erzeugen von Blechlamellenpaketen |
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DE47392C (de) | A. S. kimball, Lehrer, und G. L. brownell in Worcester, Massach., V. St. A | Elektrische Spinn- und Zwirnmaschine | ||
FR557064A (de) | 1922-07-06 | 1923-08-02 | ||
US2451954A (en) * | 1945-04-03 | 1948-10-19 | Westinghouse Electric Corp | Inductor generator equipment, especially for induction heating |
DD47392A1 (de) | 1963-12-02 | 1966-04-05 | Heinz Hochmuth | Vorrichtung zur formung von Wickungsstaeben fuer elektrische Maschinen |
DE1212204B (de) | 1964-08-21 | 1966-03-10 | Elektrotechnik M B H Ges | Verfahren zum Impraegnieren von Ein- und Mehrphasen-Statorwicklungen sowie Vorrichtung zur Ausuebung des Verfahrens |
DE1919642A1 (de) | 1969-04-18 | 1970-11-05 | Veser F | Geraet und Verfahren zur Stromsteuerung fuer Anlagen zur Traeufelimpraegnierung von Wicklungen elektrischer Maschinen |
US5847370A (en) * | 1990-06-04 | 1998-12-08 | Nordson Corporation | Can coating and curing system having focused induction heater using thin lamination cores |
JP3494515B2 (ja) | 1995-11-07 | 2004-02-09 | 株式会社日立産機システム | 減速機付電動機 |
US5919308A (en) | 1996-06-04 | 1999-07-06 | Axis Usa, Inc. | Conveyance of dynamo-electric machine components in resin application systems |
JP2003342637A (ja) * | 2002-05-29 | 2003-12-03 | Toyo Tetsushin Kogyo Kk | モータ用コアの磁場焼鈍方法および磁場焼鈍装置 |
DE202005021796U1 (de) | 2004-06-16 | 2010-05-12 | Gottlob Thumm Maschinenbau Gmbh | Vorrichtung zum Vergießen von eine Wicklung aufweisenden elektrischen Bauteilen |
US7767940B2 (en) * | 2005-09-29 | 2010-08-03 | Lincoln Global, Inc. | Device and method for drying electrode coating |
JP4818940B2 (ja) | 2007-01-12 | 2011-11-16 | 株式会社オー・イー・ティー | ステータコイルの加熱装置 |
JP4706643B2 (ja) * | 2007-02-08 | 2011-06-22 | トヨタ自動車株式会社 | 固定子の加熱方法、及び加熱装置 |
IT1396761B1 (it) | 2009-10-21 | 2012-12-14 | Saet Spa | Metodo e dispositivo per l'ottenimento di un materiale semiconduttore multicristallino, in particolare silicio |
JP5868913B2 (ja) * | 2013-08-27 | 2016-02-24 | 本田技研工業株式会社 | ステータワーク加熱装置、ステータワーク加熱方法及びステータコイル製造方法 |
DE102015214666A1 (de) * | 2015-07-31 | 2017-02-02 | TRUMPF Hüttinger GmbH + Co. KG | Induktor und Induktoranordnung |
KR101659238B1 (ko) * | 2015-10-28 | 2016-09-22 | (주)항남 | 코어 자동 분리형 접착식 적층 코어 제조장치 |
DE102017005532A1 (de) | 2017-06-10 | 2018-12-13 | copperING GmbH | Verfahren und Vorrichtung zum induktiven Erwärmen eines Stators oder Ankers einer Elektromaschine |
-
2017
- 2017-06-10 DE DE102017005532.7A patent/DE102017005532A1/de active Pending
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2018
- 2018-06-05 WO PCT/DE2018/000171 patent/WO2018224066A1/de active Application Filing
- 2018-06-05 EP EP18740090.8A patent/EP3635850A1/de active Pending
- 2018-06-05 US US16/621,040 patent/US11626782B2/en active Active
- 2018-06-05 CN CN201880051973.4A patent/CN110999046A/zh active Pending
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US20200204050A1 (en) | 2020-06-25 |
WO2018224066A1 (de) | 2018-12-13 |
CN110999046A (zh) | 2020-04-10 |
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