WO2011098247A1

WO2011098247A1 - Device for converting electrical into mechanical energy and/or vice versa, winding for such a device and method for producing such a device

Info

Publication number: WO2011098247A1
Application number: PCT/EP2011/000571
Authority: WO
Inventors: Richard Halm
Original assignee: Richard Halm
Priority date: 2010-02-09
Filing date: 2011-02-08
Publication date: 2011-08-18

Abstract

The invention relates to a device (1) for converting electrical into mechanical energy and/or vice versa, in particular a canned motor for a circulating pump, having a rotor (2) rotating about an axis of rotation (10) and a stator (4), the stator (4) comprising a pair of poles having pole windings (12, 22; 14, 24; 16, 26). The invention is characterized in that the device has pole shoes (70, 72) formed separately from a preferably annular stator yoke (40), in that the pole windings (12, 22; 14, 24; 16, 26) of the pair of poles are wound continuously on pole coils (44, 46) formed by a winding (42) over a connecting section (18; 20; 28) of the winding that extends at least partially radially in relation to the axis of rotation (10), using an inexpensive and operationally reliable layer winding machine, and are electrically connected to one another without any interruption, and in that, following winding, the pole shoes (70, 72) are inserted into the pole coils (44, 46) and are brought into contact, in a radial outward manner, with the stator yoke (40) surrounding the pole shoes (70, 72) radially on the outside. The invention also relates to a winding (42) for such a device (1) and to a method for producing such a device (1).

Description

Apparatus for converting electrical energy into mechanical energy and / or vice versa, bobbins for such a device and method for producing such a device

The invention relates to a device for converting electrical energy into mechanical energy and / or vice versa, in particular one

Canned motor for a circulation pump, a winding body for such a device and a method for producing such a device.

From DE 10 2004 030 721 B3 a generic device is known, as for example for the drive of

Heating circulation pump is used. The stator windings are subjected to an alternating voltage and the rotor is as

Squirrel cage trained.

Developments of such devices are referred to as magnetic motors in which the rotor has permanent magnets that follow a magnetic field generated by the stator windings, rotating around the axis of rotation. By choosing the frequency of

Statorwicklungsspannung the speed of such devices is adjustable.

CONFIRMATION COPY The stator usually has a plurality of pole pairs, which are integrally connected to the stator yoke, wherein the poles and the associated

Polwicklungen are spaced apart. If the pole windings of a pole pair are to be wound continuously, a complicated winding technique is required, for example using a needle winding machine. Here are only comparatively small

Number of turns per winding space possible, in particular, no space-saving layer windings are possible. In addition, between the wound bodies to be wound gaps must remain, through which the needle can accomplish the winding through. This leads to a further disadvantageous restriction of the available winding space. This will saturation and magnetization

impaired and thus the performance of the device or the engine. In another known device, the pole pieces from

Statorjoch separated and individually wrapped in separate bobbins and each have two terminal ends of the winding. These compared to a composite winding, for example, six additional electrical connection points affect the reliability and are costly. In addition, the pole shoes separated from the yoke must costly with the stator yoke in the recesses of the yoke

be pressed in and reconnected.

From DE 103 37 916 A1 a reluctance motor and a method for winding a reluctance motor is known in which a two-part

Statorabdeckkörper is provided, both parts of the

Statorabdeckkörpers are inserted in opposite directions in the axial direction in the stator core under mutual overlap of the mutually associated ends. From EP 1 499 000 AI a stator for a device according to the preamble of claim 1 is known. In the known stator inner and outer yoke segments are integrally formed, wherein the outer yoke segments form a circle segment. The pole shoes are integrally connected to the respective yoke segment, therefore, it is necessary to form the winding support split, so that they each consist of two U-shaped half-shells, which are pushed together in the axial direction from two opposite sides and

then wrapped with the winding wire.

The invention is therefore based on the object, a device for converting electrical energy into mechanical energy and / or vice versa, in particular a canned motor for a circulating pump, or in other words an electric machine, a winding body for such a device and a method for producing such

To provide apparatus that overcomes the disadvantages of the prior art. In one embodiment, the device should be simple

be produced, have a high energy efficiency and ensure a permanently safe operation.

The problem is solved by the device defined in claim 1 and determined by the independent claim bobbin and certain in the independent claim manufacturing Her method. Particular embodiments of the invention are defined in the subclaims.

In particular, the invention solves the problem, for example, in a device with three pole pairs to provide a stator construction, with the winding of the pole pairs connected in a composite from a first pole to the opposite second pole without interruption in an energy-efficient and exact layer winding quickly and

cost is possible. Each pair of poles is using a the Polwicklungen the pole pair receiving and preferably

one-piece wound body produced. The winding body is designed such that the pole shoes belonging to the poles can each be accommodated offset by 180 ° from the winding body. The

For this purpose, pole shoes have previously been separated from the stator yoke, so that the pole shoes can be inserted into exceptional openings formed by the winding body. The separation takes place in such a way that in a merging of the pole piece and stator yoke in the context of producing the device, a large-area system is guaranteed.

The electrical connection of the opposite

Polwicklungen takes place by a bridge, which is initially extended axially from the two Pölspulen of the bobbin partially so far that they can then extend radially and in particular diametrically extending frontally over the can of the device.

The magnetic flux well-conducting pole pieces are over a

Stanzpaketierverfahren have been separated from a preferably annularly extending Statorjoch. The so-isolated pole pieces are inserted into the pole coils of the winding body. The pole coils or

Pole coil winding body have for this purpose in a radial direction with respect to the axis of rotation extending opening. In accordance with the respective context, the term pole coil or pole coil winding body is used below to designate the body onto which the pole winding can be applied, or to designate the electrical component having the pole winding.

In a device with three Polschuhpaaren three bobbins can be used. These may be substantially the same design and only in training, in particular in the axial height of the the two pole coils or Polspulenwickelkörper together

differentiate between connecting element.

The equipped with the pole pieces winding body can in the

Manufacture of the device can be used in the annular stator yoke. Subsequently, the can of the device in the

annular arrangement of the winding body used. The split tube comes into abutment against the radially inner end of the pole pieces. The pole shoes of the individual winding bodies are pressed radially outwards and thereby pressed into contact with the annular stator yoke and fixed there.

The connection between pole piece and stator yoke can still be secured, for example by gluing, soldering, welding or compression.

In one embodiment, the object is achieved by a device for converting electrical energy into mechanical energy and / or vice versa, in particular by a canned motor for a circulating pump, with a rotor rotating about a rotation axis and a stator, the stator having a pole pair with pole windings, and where the

Polwicklungen the pole pair via an at least partially radially with respect to the axis of rotation extending connecting portion of

Winding are wound continuously and are electrically connected to each other without interruption.

As a result, it is not necessary to electrically connect the pole windings of the pole pair with each other through a contact point. By the

Saving such a contact point is the reliability of

Device increases. Furthermore, it is advantageous that a cost-effective and reliable layer winding machine can be used for winding the pole coils. In addition, an orderly layer winding can be ensured by simple means by which in turn a high Fül factor is achievable, in particular a higher filling factor than by a winding made with a needle winder. In turn, a higher energy efficiency of the device can be achieved.

Another advantage is that the connecting portions between the pole windings of a pole pair in an inventive

Device are short, and thus a lower material usage is required and lower losses, compared to one

Embodiment in which the connecting sections between the

Polwicklungen a Polpaares be laid radially on the outside in the circumferential direction, as for example when using a

Needle winding machine is the case.

In one embodiment, the connecting line of the winding between two pole windings of a pole pair runs at least partially diametrically from a first pole winding of the pole pair to the second pole winding of the pole opposite the axis of rotation

Pole pair. This ensures the shortest possible connection section. In one embodiment, the device has a plurality of pole pairs, in particular three pole pairs each having two pole windings, d. H. a total of six pole windings. In the area of the pole windings of a first pole pair, the connections, in particular plug-in or screw terminals, are arranged for the electrical power supply of all pole windings. For this purpose, a first winding body of the first pole pair in the region of one or both pole coils each have a connection element.

The connecting element has at least one, preferably a plurality of receiving openings for the insertion of electrical contact members, by means of which the pole windings are electrically contacted and / or connectable to each other. The connection element can, for example a number corresponding to the number of pole pairs

Have receiving openings. To a first connection element of the winding body, all connection lines of the pole windings of all pairs of poles can be supplied, the externally with an electrical

Supply or operating voltage must be applied. To the opposite second connection element of the winding body, the respective second connecting lines of the pole windings of all pole pairs can be supplied, which can be electrically connected to each other there, for example, to provide a star-shaped interconnection of the windings of the pole pairs.

In one embodiment, the connections of the first pole windings of the further pole pairs adjacent to the first pole winding of the first pole pair extend in the circumferential direction to the first pole winding of the first pole pair, in particular to the first connection element of FIG

Winding body of the first pole pair, supplied. As a result, the associated connection lines can be short. In one embodiment, the remaining terminals of all pole windings are electrically connected to one another in the region of a second pole winding of the first pole pair.

In one embodiment, the connections for the electrical

Energy supply of all Polwicklungen axially spaced from the

Arranged pole windings. In particular, the terminals may be in an axial direction in the direction of the axis of rotation of the stator windings

spaced connection space of the device be guided. For this purpose, the connection element of the winding body can have a length such that the electrical contact elements inserted into the receiving openings of the connection element are arranged in the axially arranged manner

Protruding terminal space of the device. In this way, a simple and secure electrical contacting of the coil ends ensured directly in the connection space of the device, without the need for further electrical connection elements.

In one embodiment, the stator yoke and / or the winding body have first positioning means, by means of which the winding body is positioned on the stator yoke and is preferably fixed by positive locking. The positioning means may be formed, for example, by a recess on the stator yoke, in which the outer end of the stator yoke fitting end disk of the bobbin positively locks. The thus achieved positioning of the bobbin in the stator yoke also offers the advantage that the pole shoes subsequently inserted into the winding body are also positioned and guided during insertion, whereby the pole shoes are fixed at a predetermined position. In one embodiment, the stator yoke and / or the pole shoes have fastening means by which the pole shoes are positioned on the stator yoke and fixed by frictional and / or positive locking. The

Pole shoes can in particular be plugged together with the Statorjoch, in particular be clamped together. By the

Positioning of the winding body and / or pole shoes can also be transmitted to the stator yoke in a simple manner in the circumferential direction.

In one embodiment, the pole pieces are through a canned the

Device secured in the voltage applied to the Statorjoch position.Durch the impressions of the can, whose diameter is slightly larger than the diameter of the stator, which is defined by the gap tube immediately opposite pole pieces, and by a suitable shaping of the can tube facing Polschuhfüße is the larger circumference of the can in an undercut of the

Pole shoes taken. The resulting slight undulation of the split tube is inevitably subjected to tension, which acts on the pole pieces and presses them firmly against the yoke.

In one embodiment, the device has a connection element for electrically contacting the pole windings. The connecting element may be formed separately from the winding body and be fixable in one of a plurality of predeterminable positions on the winding body. The connecting element can preferably be releasably plugged together in one of a plurality of predefinable positions with the winding body.

The object is also achieved by a winding body for a device described above, wherein the winding body has two pole coils or Polspulenwickelkörper to which the pole windings of a pole pair continuously and electrically uninterrupted be wound, and wherein the two pole coils or Polspulenwickelkörper a radially with respect to the Rotation axis of the device extending connecting element are mechanically interconnected. About the connecting element of the two pole windings of the pole pair electrically connecting portion of the winding is feasible. Each of the pole coils or Polspulenkörper takes in each case one of the magnetic Fl uss well-conducting pole piece in it and has for this purpose a receiving opening. The pole piece is preferably used only when the pole coil or the Polspulenwickelkörper is wound with the pole winding.

In one embodiment, the connecting element at least in sections, a guide means, for example a groove-like depression, for the guidance of the connecting portion of the winding. As a result, the shortest possible connecting portion can be ensured and this also be mechanically protected against damage. In one embodiment, the pole coils or the pole coil winding body and the connecting element are integral with the winding body

educated. Preferably, the connection element or the connection elements for receiving the electrical contact elements are integrally formed together with the pole coils or the Polspulenwickelkörpern and the connecting element. The connecting element of the winding body for the connection lines of the pole windings to be contacted externally can be arranged radially (with respect to the axis of rotation) inside (with respect to the adjacent pole coil). As a result, the layer winding of the bobbin is not impaired or hindered. In addition, the connection element can be formed with sufficient mechanical stability and a relatively large length, in particular with a length through which the connection element projects into the axially arranged connection space or connection box of the device.

In one embodiment, the connection element is at least

partially radially offset relative to the pole coil or the pole coil body, for example, radially offset inwards. This allows the

Wire guide when winding the pole coil or the Polspulenkörpers be brought up to the radial inner edge. This can provide a perfect layer winding with high winding density. The object is also achieved by a method for producing a device described above, in which during winding of the stator poles by winding the winding body or the bobbin initially a first pole winding of a pole pair is wound and then without interruption of the winding line, the second pole winding of the pole pair is wound , A first with the second pole winding of the pole pair connecting connecting portion is guided at least partially radially with respect to the axis of rotation running.

The winding body can be rotated for winding about an axis which is perpendicular to the axis of rotation of the device. For example, the winding body can be rotated about an axis which runs parallel to the opening for the insertion of the pole shoes. The wire guide can be moved parallel to the axis about which the bobbin is rotated. After the Polspulenwickelkörper is wound for the first pole coil, the winding body can be moved to a suitable angular position, so that is positioned by displacement of the wire guide, the connecting portion of the winding on the connecting element and then wound by rotation of the winding body of the Polspulenwickelkörper the second pole coil. This has the advantage of wrapping with a simple and robust

Winding machine can be made and also with short winding times precise windings are made. For winding both pole coils of the bobbin must not be implemented in the winding machine. Alternatively, the winding body can be used in such a sheet winding machine that first the first pole coil of the winding body is wound with a ply winding. Subsequently, the winding body can be rotated by 180 ° used in the winding machine and then the second pole winding are wound on the second pole coil.

In one embodiment, a wound body is wound in this way per pole pair. In a device with three pole pairs

Accordingly, wound three bobbins in this way. Subsequently, magnetically conductive pole pieces in the

Pole coil openings of the winding body can be used. You can do this Polschuhs were separated by a Stanzpaketierverfahren of a stator yoke. The separation can during the

Statorblechstanzen done, whereby the manufacturing costs are reduced. The winding bodies are then arranged around the axis of rotation around, for example, used in an annular stator yoke, wherein adjacent winding body can be brought into abutment against each other. In one embodiment of the invention, the mutually associated contact surfaces, abutment lines or contact points of adjacent winding body are designed such that a self-adjustment of the arrangement of

Results in winding body. Radially on the outside, the magnetic stator well-conducting annular stator yoke runs.

Subsequently, the pole pieces are pressed by the insertion of a can in the space bounded by the winding bodies interior radially outward and brought into abutment against the Polschuh radially outwardly comprehensive Statorjoch. This results in a self-adjustment of the pole pieces with respect to the stator yoke, because the pole pieces are adjusted by the winding body.

In one embodiment, the pole pieces are pressed by inserting a split tube and / or a preferably partially conical mandrel radially outward and thereby brought into clamping connection with the Polschuh radially outwardly comprehensive stator yoke. This is not just a positioning of the pole pieces in relation to the

Stator yoke given, but also a fixation of the pole pieces. Since significant forces are required for the impressions of the pole shoes, a mandrel can be used for this purpose before the insertion of the can, which mandrel can be removed again after the pole shoes have been connected to the stator yoke. The subsequent insertion of the can then has in

Essentially only the position of the pole shoes securing effect. Further advantages, features and details of the invention will become apparent from the dependent claims and the following description in which several embodiments are described in detail with reference to the drawings. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination.

Fig. 1 shows a perspective view of an inventive

Contraption,

FIG. 2 shows a section through the device of FIG. 1, FIG.

Fig. 3 shows an enlarged section III of the apparatus of Fig. 2, Fig. 4 shows a perspective view of a first winding body, Fig. 5 shows a first possible arrangement for winding the

Wrap body,

Fig. 6 shows a front view of a second embodiment of a

Wrap body,

FIG. 7 shows a side view of the wound body of FIG. 6, FIG.

8 shows a plan view of the winding body of FIG. 6,

Fig. 9 shows a second possibility of the Bewickins of

Bobbin, and

Fig. 10 shows a section transverse to the axis of rotation by another

Embodiment of an apparatus according to the invention, FIG. 1 1 shows an enlargement of a detail XI of FIG. 10,

12 shows a section through a device according to the invention paral lel to the rotation axis,

Fig. 13 shows a section through the device transverse to

Axis of rotation

Fig. 14 shows a comparison with the illustration of FIG. 1 3 enlarged

Section of a cross section transverse to the axis of rotation of a further embodiment of the device, Fig. 1 5 shows a corresponding section of another

Embodiment of a device according to the invention, Fig. 16 shows a perspective view of a second

Embodiment of a wound body, and

Fig. 1 7 shows a perspective view of another

Embodiment of a device according to the invention.

1 shows a perspective view of a device 1 according to the invention for converting electrical into mechanical energy and / or vice versa, in particular an electrical machine, as used for example as a canned motor for a heating circulation pump. In this case, certain components of the device 1, such as the housing, not shown, as well as parts of the driven by the device 1 in the embodiment

Circulation pump. A far more complete sectional drawing is shown and described as FIG. 1 in DE 10 2004 030 721 B3, which is based on the same applicant.

The device 1 has a rotor 2 rotating around a rotation axis 10 (FIG. 2) and a stator 4. In the exemplary embodiment, the stator has three pole pairs, each with two pole windings 12, 22; 14, 24; 16, 26 on. The first pole winding 12 and the second pole winding 22 of the first pole pair are continuously wound and electrically connected to one another via an at least partially radially with respect to the axis of rotation 10 extending connecting portion 18. For this purpose, the connecting portion 18 is initially a little way out in the axial direction of the first pole winding 12, to then be guided in the radial or diagonal direction to the second pole winding 22 of the first pole pair. In a corresponding manner, the first and second pole windings 14, 24 of the second and third are also

Pole pair with the associated second pole windings 16, 26 respectively a connecting portion 20, 28 electrically connected to each other. The connecting sections 18, 20, 28 are guided at different axial distances from the associated pole pairs or to the stator 4. 2 shows a section through the device 1 of FIG. 1,

in particular by the first and second pole winding 12, 22 of the first pole pair. FIG. 3 shows an enlarged section III of FIG

Representation of Fig. 2. The rotor 2 of the device 1 is rotatably connected to a rotatable about the axis of rotation 10 shaft 6. The shaft 6 may be rotatably connected, for example, for driving a pump with an impeller of the pump, which is not shown in Fig. 2.

The rotor 2 carries in the circumferential direction about the axis of rotation 10 distributed permanent magnets 30 which lag a generated by the stator windings rotating field and thereby the shaft 6 in

Set rotation movement. The separation between the rotor 2 and stator 4 by means of a split tube 8, which is cup-shaped at its upper in Fig. 2 end by a closure member 32. The end part 32 forms radially inwardly a receptacle for a first bearing 34 of the shaft 6. A second bearing 36 is arranged on the axially opposite side of the rotor 2.

The gap tube 8 is located radially outwardly directly into contact with the pole pieces 38 of the stator 4 and presses them to the in the

Embodiment annular Statorjoch 40 and the pole windings 12, 14, 16, 22, 24, 26 comprehensive.

4 shows a perspective view of a first wound body 42, on which the first and second pole windings 12, 22 of the first pole pair can be wound. For this purpose, the first winding body 42 has two pole coils 44, 46 or pole coil winding bodies, onto which the first or second pole windings 12, 22 in each case one layer winding, ie with high winding density, can be wound up. The two pole coils 44, 46 or Polspulenwickelkörper are mechanically connected to each other via a radially extending with respect to the axis of rotation 10 of the device 1 connecting member 48, over which the two

Polwicklungen 12, 22 of the first pole pair electrically connecting

Connecting portion 18 is feasible. The connecting element 48 in this case has a guide means, in the exemplary embodiment, a groove-shaped depression for the guidance of the connecting portion 18. The first bobbin 42 also has in the region of the first pole coil 44, a first connection element 50 which has at its axial end a plurality of, in the embodiment, three receiving openings 52 for the insertion of electrical contact members, by means of which the free end of the first pole winding 12 of the first pole pair electrical

is contactable. The resulting after insertion of the contact members contact point is axially so far away from the first pole coil 44 and the connecting member 48 that the first

Connection element 50 projects into an axially spaced from the stator 4 of the device 1 electrical connection space, in particular in an electrical connection box. In this way, in the

Connection box immediately made an electrical contacting of the first Polwicklungen 12, 14, 16. By doing that, the first one

Connection element 50 is arranged radially inwardly with respect to the first pole coil 44, the first connection element 50 does not interfere with the winding of the first pole coil 44, so that there a layer winding can be wound with high packing density.

In the region of the second pole coil 46, a second connection element 54 is arranged radially on the outside, in particular integrally formed by the first coil body 42, which likewise has receiving openings 56 for the insertion of electrical contact elements. In this area the free winding ends of the second pole windings 22, 24, 36 of the first, second and third pole pair can be inserted and

optionally electrically connected to each other, for example for producing a star connection.

Radial inside are the changing rooms of the first and second

Pole coil 44, 46 bounded by an integrally formed by the first bobbin 42 limiting element 58. The limiting element 58 projects beyond the first and second pole windings 12, 22 applied to the first and second pole coils 44, 46, axially and / or radially, and forms a contact or guide surface for the first or the second pole winding

Connection element 50, 54 towards leading ends of the pole windings 12, 14, 16, 22, 24, 26. Thus, in the embodiment shown in FIG. 1, the free winding end 60 of the first pole winding 12 is guided to the first contact member in the first connection element 50. The free

Winding end 62 of the first pole winding 14 of the second pole pair is in the circumferential direction over an angle of about 60 ° to the first

Connection element 50 out. The free winding end 64 of the first pole winding 16 of the third pole pair is also guided in the circumferential direction along the limiting element 58 to the first connection element 50. Similarly, the free coil ends of the second pole windings 22, 24, 26 are circumferentially along the

Limiting elements 58 led to the second connection element 54. Since only one angular range of approximately 60 ° is to be bridged even for the pole windings of the second and third pole pair, the line lengths up to the first and second connection element 50, 54 are low.

The bobbins for the second and third pole pair are in the

Substantially with the first bobbin 42, wherein only the axial height of the connecting element 58 is different, in particular in the winding body for the second and third pole pair is larger than in the first winding body 48. In addition, the winding body for the second and third pole pair in the embodiment, no connection elements.

The limiting elements 58 of adjacent winding bodies in the circumferential direction are in the mounted state shown in FIG. 1 in abutment with each other. In contrast, there is an air gap between two circumferentially adjacent pole pieces.

The winding bodies preferably have in one piece a section which forms an abutment region on which adjacent winding bodies are in abutment with one another in the assembled state of the device 1. The abutment region can be formed by the limiting element 58, as in the case of the first wound body 42. The contact area can have one or more point-like, linear or planar abutment points for a corresponding system of adjacent winding bodies. At the

Assembling the device 1, in particular when inserting the winding body in the stator yoke 40, the winding body can be brought into abutment against each other. This resulted in an automatic positioning and self-adjustment of the winding body with the stator coils 44, 46 to each other and with respect to the axis of rotation 10 and thus the poles and pole pairs of the device first Fig. 5 shows a first possible arrangement for winding the

Winding body 64, as it can be used for example for the first, second or third pole pair. The winding body 64 is substantially axially symmetrical to the axis of rotation 10. The winding body 64 has radially with respect to the axis of rotation 10 aligned bearing surfaces 65, by means of which adjacent winding body 64 when inserted into the stator yoke 40 in abutment are brought together and therefore themselves position. With respect to the axis of rotation 10 each other

opposite to the bobbin 64 has a first pole coil 66 and a second pole coil 68, each one in the radial direction

continuous opening for insertion of a first or

second pole piece 70, 72 has. In that shown in FIG

Production state is already wound on the first pole coil 66, the first pole winding 12 as a layer winding. On the second pole coil 68, the second pole winding 22 is applied with a layer winding machine. For this purpose, the layer winding machine has a winding bell 74.

After completion of the second pole winding 22 and arrangement of the winding body 64 of all pairs of poles about the axis of rotation 10, the pole pieces 70, 72 are pressed radially outward by inserting the split tube 8 and thereby brought into abutment against the stator yoke 40.

Fig. 6 shows a front view of a second embodiment of the bobbin 142, the Fig. 7 shows the associated side view and Fig. 8 is the top view. Numerous features of this second

Embodiment are identical to the first bobbin 42 shown in perspective in Fig. 4, and the corresponding features are supplemented by the amount 100 reference numerals

characterized. A major difference of the second

Embodiment consists in the radial offset 1 76 of the radially outer surface 1 78 of the first connection element 1 50. This is the offset 1 76 relative to the radially inner wall 180 of the first

Pole coil 144 offset radially inward. This makes it possible to guide the winding wire 96 (FIG. 9) in such a way that a perfect layer winding can be introduced into the first pole coil 144 even in the edge regions. If the first connection element 1 50 is arranged radially outside with respect to the first pole coil 144, such an offset 76 can be provided radially outward. In a corresponding manner, in the region of the second pole coil 146, the second connection element 154 can also be arranged radially offset with respect to a wall of the second pole coil 146, if appropriate.

The axial length 182 of the first connection element 1 50 can be chosen so that the receiving opening 1 52 for the contact member into a separate junction box of the device, which may be arranged axially, for example. The winding wires are inserted into a slot 184 widening at the axial end of the first connecting element 150 and thereby electrically connected to the contact element inserted in the receiving opening 152. Both the first connection element 1 50 and the second connection element 1 54 each have three such slots 184.

FIG. 9 shows a second possibility of winding the bobbin 142. In this case, the bobbin 142 is in a winding mandrel 86

or the winding mandrel 86 is inserted into the opening 188 (FIG. 6) of the winding body 142, which serves for the further production of the device 1 for receiving the pole shoes 70. The winding body 142 is clamped between the tailstock 90 and the drive spindle 92 of the winding machine and set in rotation about the winding axis 94. The wire 96 is thereby wound over a wire guide 98, which is movable along the double arrow 99, in the winding chamber of the first pole coil 144.

In the illustrated embodiment, the second pole winding 122 is already completely wound on the second pole coil 146, wherein after

Completion of the second pole winding 122, the wire guide 198 to the Amount of the distance of the two pole coils 144, 146 has been linearly moved while the connecting portion 120 of the winding along the

Connecting element 148 has been laid. For this purpose, the winding body 142 has been fixed in the position shown in FIG. 9 until the wire guide 98 has guided the wire 96 into the region of the first pole coil 144.

Subsequently, the winding body 142 is again set in rotation about the winding axis 94 and thereby the first pole coil 144 is wound. This makes it possible to produce the two bobbin without interrupting the winding process and in particular without changing the winding sense of the winding machine.

10 shows a section transverse to the axis of rotation 10 through a further embodiment of a device 101 according to the invention, and Fig. 1 1 shows an enlarged section XI of Fig. 10. The opposite pole pieces 1 70, 172 of a pole pair are on their radial The stator yoke 140 has first positioning means 141, in particular recesses, through which the winding body 42 (not shown in FIG. 10) on the

Statorjoch 140 is positioned. The first positioning means 141 can thereby form-fit with the winding body 42, for example, with an edge of the limiting element 58 of the winding body 42

interact. This is not just a positioning of the

Winding body 42 with respect to the Statorjoch 140 ensures, but also a fixation with respect to the forces occurring for example due to the magnetic field in the circumferential direction about the axis of rotation 10. The stator yoke 140 may have for each pole coil 44, 46 a plurality, in particular two first positioning means 141 , The Statorjoch 140 has fastening means 145, in particular each formed by a recess into which a pole piece 1 70, 1 72 used is. For this purpose, the pole piece 1 70, 1 72 on its radially outer surface on a contour which is adapted to the fastening means 145 and in turn a fastening means 147 of the pole piece 1 70, 1 72 forms. The fastening means 145 of the Statorjochs 140 has in sections a chamfer or rounding, so that there is a self-centering when inserting the pole piece 1 70, 1 72 in the stator yoke 140.

On their radially inner side, the pole pieces 1 70, 1 72 have a radius 151 simulated to the can 8, which is smaller than the radius of the can 8 in the undeformed state shown in the upper half of FIG. By inserting the can 8, the pole pieces 1 70, 1 72 pressed radially outward and placed in secure contact with the stator yoke 140 and / or secured in the secure system to the stator yoke 140. In the lower half of Fig. 10, this state is shown. As is apparent in particular from the enlargement of Fig. 1 1, the can 8 deformed in any case partially

spring elastic in the limited by the smaller radius 151 of the pole piece 1 70, 1 72 cavity and exerts due to the spring force a position of the pole pieces 1 70, 1 72 locking effect.

FIG. 12 shows a section through a device 101 according to the invention parallel to the axis of rotation 10 and FIG. 1 3 shows a section through the device 1 transverse to the axis of rotation 10. In the cross section of FIG. 13, the positioning of the wound body 42 by means of the limiting element 1 58 visible that with its tangential with respect to the axis of rotation 10 extending wall end forms first positioning means 143 which engage in the recesses formed by the first positioning means 141 in the stator yoke 140. By this positioning of the winding body 42 is also already a guide and pre-centering for the insertion of the pole pieces 1 70 given. These are included with the insert their radial end forming the fastening means 147 in the recess formed by the fastening means 145 in the stator yoke 140.

The pole windings 1 12 of a Polpaares are connected via the connecting element 148 connected to each other, which is integral with the two

Pole coil winding bodies is formed and forms the winding body 42, which is rigid but resilient deformable. As is apparent in particular from the section of FIG. 12, the connecting element 148 extends axially spaced from the pole winding 1 1 2 and in particular also axially spaced from the rear bearing 1 55 of the drive shaft 106th

FIG. 14 shows an enlarged section of a cross section transverse to the axis of rotation 10 of a further exemplary embodiment of the device 201 compared with the representation of FIG. 13, and FIG. 1 5 shows a corresponding section of a further embodiment of a device 301 according to the invention. In the exemplary embodiment of FIG. 14, the pole piece 270 is only in contact, in particular in a frictional clamping arrangement, on the inside of the stator yoke 240. The clamping force is applied through the split tube 208. A positioning of the

Polschuhs 240 and in particular of the pole winding 212 bearing

The bobbin is given by the first positioning means 241 in the stator yoke 240, with the tangential by the tangential with respect

Rotation axis 10 extending boundary element 258 formed first positioning member 243 cooperates such that the winding body is securely positioned with respect to the stator yoke 240 and against a

Turning around the axis of rotation 10 is secured.

In the embodiment of FIG. 15, the stator yoke 340 has a recess or recess substantially rectangular in the illustrated cross-section, which forms a fastening means 345 into which the radial end section forming the fastening means 347 of the pole piece 370 is used clamped. In one embodiment, after inserting the pole pieces 370 into the winding body, a preferably at least sectionally conically shaped mandrel is inserted into the rotor area and thereby the pole shoes 370 are pressed radially outwards and into the recess in the stator yoke 340. The connection between pole piece 370 and stator yoke 340 is clamping, so that the gap tube 308 used after the removal of the mandrel essentially has only a securing function. 15 shows the cylindrical and perpendicular to the plane of recess or punching in Statorjoch 340 with the depressed pole piece 370. Due to the positive positioning of the bobbin on Statorjoch 340 is an accurate determination of the recess or punching of Statorjochs 340 for

self-locking attachment of the pole pieces 370 in Statorjoch 340 allows. As a result, the pole shoes 370 inserted into the winding body are guided precisely into the recess. Since Ihehe forces are required for the impressions, the pole pieces 370 are pressed by a suitable steel mandrel self-locking outward and fastened.

Fig. 16 shows a perspective view of a second

Embodiment of a winding body 442 and a separately formed connection element 450 for electrically contacting the pole windings (12, 22, 14, 24, 16, 26), and Fig. 1 7 shows a perspective view of another embodiment of a device according to the invention 401 with a total of three such a

Winding bodies 442 and the attached connection element 450. The two pole coil winding bodies of the winding body 442 have radially in each case a delimiting element 458 and are connected via a connecting element 448 formed integrally with the pole coil winding bodies connected with each other. The limited space of the limiting elements 458 receiving space for the pole windings is aligned inside plan and tangential. As a result, a layer winding with a high packing density can be produced particularly advantageously with a layer winding machine.

Radially outward, the winding body 442 has a stop means 457 which forms a stop when the winding body 442 is inserted,

for example, by coming into contact with the Stator yoke .. The

Stop means 457 has a recess into which a nose-like

Projection of the connection element 450 can intervene. The winding body 442 has connecting means 461 for connecting to the

Connection element 450, for example, openings into which a suitably shaped connecting means 463 of the connection element 450 can be inserted. The connection of the connection element 450 with the

Winding body 442 is preferably detachable, so that even a once selected position of the connecting element 450 again to the

Application can be adapted lf. As can be seen in particular from FIGS. 14 and 15, FIGS

Connecting means 261, 361 of the bobbin 442 arranged in a portion of the bobbin 442, which forms a preferably curved edge or surface 265 for the conditioning of the bobbin on the pole piece 270 'and / or a radially extending edge or surface 267 for the investment of the bobbin on the adjacent winding body.

The connecting element 450 is formed separately from the winding body 442 and may be fixable in one of preferably a plurality of predeterminable positions on the winding body 442 by the

Connecting means 461, 463 are brought into operative connection with each other. As a result, the production of preferably by pouring or Injection molding produced bobbin 442 simplified. In addition, the connection element 450 can optionally be arranged in the most suitable position in the circumferential direction, irrespective of the winding bodies 442 used, which differ substantially only by the axial spacing of the connection element 448 from the pole coils.

Claims

P a n t a n s p r e c h e

Device (1) for converting electrical energy into mechanical energy and / or vice versa, in particular canned motor for a circulating pump, with a rotor (2) rotating around a rotation axis (10) and a stator (4), the stator (4) being a pole pair with pole windings (12, 22; 14, 24; 16, 26), characterized

characterized in that the device is separate from a

that the pole windings (12, 22, 14, 24, 16, 26) of the pole pair are connected via a connecting section (18) extending at least partially radially with respect to the axis of rotation (10) 20, 28) of the winding are wound continuously on a coil body (42) formed pole coils (44, 46) using a cost-effective and reliable layer winding machine and are electrically connected to each other without interruption, and that after winding the pole pieces (70, 72) inserted into the pole coils (44, 46) and brought radially outward into abutment with the pole shoes (70, 72) radially outwardly comprehensive Statorjoch (40).

Device (1) according to claim 1, characterized in that the connecting portion (18; 20; 28) of the winding is at least partially diametrically opposed by a first pole winding (12; 14; 16) of the pole pair with respect to the axis of rotation (10). opposite second pole winding (22; 24; 26) of the pole pair extends.

Device (1) according to claim 1 or one of the preceding claims, characterized in that the device (1) has a plurality of pole pairs, in particular three pole pairs, and that in Area of the pole windings (1 2, 22) of a first Polpaares the

Connections for the electrical power supply of all pole windings (12, 22, 14, 24, 16, 26) are arranged, in particular that the connections for the electrical power supply of all pole windings (12, 22, 14, 24, 16, 26) in the region of first pole winding (12) of the first pole pair are arranged.

Device (1) according to claim 1 or one of the preceding claims, characterized in that the stator yoke (40) and / or the winding body (42) first positioning means (241, 243), through which the winding body (42) on the stator yoke ( 40) is positioned and preferably fixed by positive locking.

Device (1) according to claim 1 or one of the preceding claims, characterized in that the stator yoke (340) and / or the pole shoes (370) fastening means (345, 347) through which the pole pieces (370) on the stator yoke (340 ) are fixed by frictional and / or positive locking, in particular that the pole shoes (370) are self-clamping connected to the stator yoke (340).

Device (1) according to claim 1 or one of the preceding claims, characterized in that the pole shoes (70, 72) are secured by a split tube (8) of the device (1) in the position adjacent to the stator yoke (40), in particular that the split tube (8) is deformed elastically by the insertion into the device (1) and secures the position of the pole shoes (70, 72) by the spring force.

Device (1) according to claim 1 or one of the preceding claims, characterized in that the device (1) a Connection element (450) for the electrical contacting of

Polwicklungungen (12, 22, 14, 24, 16, 26), and that the connecting element (450) is formed separately from the winding body (442) and in one of a plurality of predeterminable positions on the winding body (442) can be fixed, in particular one of a plurality of predeterminable positions with the winding body (442) is preferably releasably plugged together.

The winding body (42) for a device (1) according to one of the preceding claims, wherein the winding body (42) has two pole coils (44, 46) on which the pole windings (12, 22; 14, 24; 16, 26) of a pole pair are continuous and electrically uninterruptible winding, characterized in that the two pole coils (44, 46) via a radially with respect to the

Rotation axis (10) of the device (1) extending

Connecting element (48) rigid, but elastically deformable connected to each other, over which the two pole windings (12, 22; 14, 24; 16, 26) of the pole pair electrically connecting portion (18; 20; 28) of the winding is feasible, and that after winding using a cost-effective and reliable layer winding machine pole pieces (70, 72) in the pole coils (44, 46) of the winding body (42) used and radially outward in contact with the pole pieces (70, 72) radially outside comprehensive Statorjoch (40) can be brought.

Winding body (42) according to claim 8, characterized in that the winding body (42) has a connection element (50, 54) with at least one, preferably a plurality of receiving openings (52, 56) for the insertion of electrical contact members, by means of which the pole windings (12 , 22; 14, 24; 16, 26) are electrically contactable and / or connectable to one another. A method for producing a device (1) according to one of claims 1 to 7, wherein a first pole winding (12; 14; 16) of a pair of poles is first wound during the winding of the pole coils (44, 46) having stator poles and then without

Winding the second line winding (22; 24; 26) of the pair of poles, characterized in that the pole windings (12,22; 14,24; 16,26) are wound using a low-cost and reliable layer winding machine such that the first connecting portion (18; 20; 28) connected to the second pole winding (12,22; 14,24; 16,26) of the pole pair is guided at least partially radially with respect to the axis of rotation (10), and that pole pieces are formed after winding (70, 72) are inserted into the pole coils (44, 46) and are brought radially outward into abutment against a stator yoke (40) which surrounds the pole shoes (70, 72) radially on the outside.

A method according to claim 10, characterized in that the pole windings (1 2, 22; 14, 24; 16, 26) are wound on pole coil winding bodies (44, 46) which are formed by a winding body (42).

A method according to claim 10 or 1 1, characterized in that the winding body (42) of the pole pairs in a preferably

annular stator yoke (40) are arranged, and that thereby by a positive connection of adjacent winding body (42) a

Self-adjustment of the position of the winding body (42) and thus positioning of the poles in the device (1). 13. The method according to any one of claims 10 to 1 2, characterized

in that the stator yoke (240) and / or the one Pole coil winding body (44, 46) forming the winding body (42) first positioning means (241, 243) through which the winding body (42) to the stator yoke (240) positioned and preferably fixed by positive locking, and that by the positioning of the winding body (42 ) of the pole piece (270) when inserted into the Polspulenwickelkörper (44, 46) pinpoint in a Statorjoch (240) provided recess is guided.

Method according to one of claims 10 to 13, characterized

in that, by inserting a can (8) of the device (1), the pole shoes (70, 72) are brought and / or held radially outward in contact with the stator yoke (40) that radially surrounds the pole shoes (70, 72) ,

Method according to one of claims 10 to 14, characterized

in that the pole shoes (70, 72) are moved radially outwards by inserting a split tube (8) and / or a mandrel and are brought into clamping connection with the stator yoke (40) which radially surrounds the pole shoes (70, 72).