RU2588027C2 - Dynamo-electric machine with self-supported housing - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: dynamo-electric machine includes a self-supporting housing having a polygonal core section and at least one connecting section in axial extension of laminated core section. Polygonal core section accommodates a stator formed from steel sheets laminated in an axial direction, secures and at least on some sections surrounds it with closed side walls on all sides. Individual sheets have a basic outer shape, particularly with an octagonal cross-section. Stator bore is surrounded by radially arranged grooves which are evenly distributed along circumference of stator bore. Steel sheets which form stator core have on their external sides recesses, said recess in form of cooling fins being located on external surface of core section.

EFFECT: improved cooling efficiency and simple design.

21 cl, 28 dwg

Description

The invention relates to a dynamoelectric machine with a self-supporting body, which has a portion of the core package.

There are many engine concepts with regard to air and water cooling, with regard to the installation of a terminal box, with regard to the arrangement of bearings, and also with regard to the specific design of cooling of a dynamoelectric machine. Thus, air cooling of a dynamoelectric machine is known from EP 0 387 743 A1. DE 197 42 255 C1 describes a three-phase open-frame machine equipped with parallel-axis cooling pipes in a stator core package. In addition, liquid-cooled electric machines are known, for example, from US 5,084,642 A and DE 91 12 631 U1, in which, at the same time, bends and an inlet and an outlet pipe are filled into the support flaps. A frameless electric machine, in which steel sheets have extensions for cooling and legs, is also known from AT 170 766.

Unpacked electric machines have insufficient rigidity of the core package and are equipped with cup support flaps for supporting the shaft, which are relatively labor-consuming to manufacture and therefore relatively expensive.

Dynamo-electric machines with a housing lead to an increase in the active part, since, in particular, cooling is not provided to the same extent as an open-frame dynamo-electric machine.

Based on this, the basis of the invention is the task to eliminate the above disadvantages. In addition, taking into account, in particular, the new efficiency classes, a dynamoelectric machine must be created, in particular, for the low voltage level, which is relatively simple to manufacture.

The problem can be solved using a dynamoelectric machine with a self-supporting body, which has a section of the core package and at least one connection section in the axial extension of the core package section, and in this section of the core package is placed a stator core package formed from axially laminated steel sheets, fixed and at least in some areas surrounded by it on all sides, while individual steel sheets have an external main shape, in particular, with an octagonal cross chnym section in which there are

- a stator bore, which is surrounded by radially spaced around the perimeter of the stator bore, evenly distributed grooves,

- radially adjacent to the back of the yoke, which runs at an equal distance from the stator bore,

- axial grooves of the steel sheet in the areas between the back of the yoke and the outer main shape of the steel sheets.

This dynamoelectric machine has a self-supporting body that has a simple polygonal portion of a core packet including a core packet. In addition, the self-supporting body in the axial extension of the core package portion has at least one connection portion. With several connection sections, these sections are preferably located on both sides at the axial ends of the sheet steel section.

According to the invention, the tasks of the self-supporting body are now clearly established and delineated. The result is a platform concept, which now allows for the implementation of individual embodiments (for example, liquid cooling with sound insulation and a back cooler on a machine, etc.) in a simple manner, without designing and constructive implementation of a new machine concept.

This speeds up, for example, the processing time when ordering a machine.

Thus, the platform concept for dynamoelectric machines is easily provided. This is, above all, especially interesting for high-power machines in the low voltage range, that is, the rated voltage is below 1000 V, since dynamoelectric machines are there for a wide variety of applications.

So, the portion of the core package of the self-supporting housing serves to fix the stator core package in predetermined areas of fit between the portion of the core package of the housing and the core package. These areas of contact serve, in particular, as a support for the torque and / or for the formation of the core package. Also there should be perceived moments of short circuit.

In another embodiment, the side surfaces of the portion of the core package of the housing are open, so that only the frame, if necessary supported by one or more spacers, performs the above tasks. The portion of the core packet thus has, in its most rudimentary spatial basic form, a regular prism with reinforced ribs and adjoining regions.

The housing connection section is located in the axial extension directly and directly on the core package section. The connection section and the section of the core package are preferably made of one material and, in particular, integrally.

The self-supporting body with its core package section and its connection section is designed extremely simply and consists of only a few basic elements. These elements can be made of steel, cast steel or gray cast iron, or aluminum.

All possibilities for connecting additional devices and / or auxiliary units, for example, air supply, air distribution, fan installation, installation of removable coolers, support plates, terminal boxes, etc., are now carried out exclusively through this one or other sections of the housing connection. With two connection sections, the core packet section is located between these two connection sections. Functions or, accordingly, the possibilities of connecting the connection section, which are not used, for example, because there is only one forced cooling, but not a single removable cooler, can be covered or, respectively, closed with covers, plugs or, respectively, blind covers in the connection area.

This greatly simplifies the basic design of the housing, since now, at the same height of the axis of the dynamoelectric machine, only one housing must be provided, with which all connection options, cooling capabilities, etc. can be realized.

For example, all types of cooling can be implemented individually or in combination, such as, for example, air self-cooling or forced air cooling, water cooling or water cooling with forced air cooling, as well as a separate removable cooler. Depending on the place of application and climatic requirements, a dynamoelectric machine with an optimal efficiency can easily adapt to existing conditions.

In this case, air flow or liquid is directed through the axial recesses of the steel sheets. In liquid cooling, in particular for tightness, it is especially preferred when pipes are provided in the recesses which are in a heat-conducting connection with the core package. This is done, for example, by means of heat-conducting casting material, and / or choking, and / or axial pressing, and / or hydraulic expansion of the pipes in the recesses of the core package.

The recesses in the form of a closed loop inside the sheets of steel are located between the back of the yoke and the outer edge or in the form of cooling fins, or, respectively, clamping grooves for pipes on the outer surface of the core package.

Advantageously, the position of the terminal box due to the very simple design of the housing with its connection portions can be selected almost freely, since the installation of the terminal box is tied only to the connection area, and not to certain mounting surfaces, such as for a ribbed housing.

In a preferred manner, the cross section of the stator core stack is given an octagonal shape, while when viewed in the circumferential direction, the shorter and longer sides are arranged alternately. Moreover, this circumferential direction is in an imaginary plane, which is perpendicular to the virtual axis of the machine.

This cross-sectional shape simplifies, in particular, the manufacturing process, if you imagine that these steel sheets are stamped from an unwound sheet of steel sheet.

The sheets forming the stator core stack, axially arranged one after the other, the sheets preferably have on their outer sides, in addition to the adjoining areas, have a surface-enlarging structure. This improves the cooling efficiency.

Adherence regions are preferably provided on the shorter sides of the steel sheets or, respectively, of the core stack, so that a predetermined distance can be set between the side wall of the core package portion of the body and the longer side of the core stack. Soundproof mats, for example, can be placed in this free space. Thanks to the minimized contact between the core package and the housing according to the invention, the noise emissions of the dynamoelectric machine are reduced.

In addition, due to the dynamoelectric machine according to the invention with its self-supporting body and its core package, an optimized material consumption is obtained, since now the corners of the core package can be used simultaneously, as opposed to a round core package. In addition, through the use of a self-supporting body, high rigidity is obtained.

If the side walls of the core package portion are closed, the core package is protected against water spray from all directions.

Thanks to the use of this self-supporting housing in a dynamoelectric machine, it is possible to do without the relatively expensive technically and financially cup support shields. In this case, less expensive support flaps are located in accordance with the invention in the connection areas.

The stator core package is preferably subjected to pressure plates on its end faces, which compress the individual axially laminated steel sheets with each other in the axial direction.

In one embodiment, the pressure plates in the region of the stator bore and / or grooves, as well as the possibly existing cooling recesses, correspond to the dimensions of the steel sheets, however, in their outer diameter, they are larger than the individual steel sheets. This gives the advantage that only the pressure plates are adjacent to predetermined areas of the inner side of the package portion of the core body. In this case, between the sides of the core package, which preferably has an octagonal main shape with shorter and longer sides of the core package, free space is formed between the surface of the core package and the inner side of the portion of the core package.

More insulating materials can now be inserted into this free space, preferably already pre-fabricated insulating mats, which can be matched to the given vibration frequencies and noise frequencies of the motor and / or the converter connected to the motor and thus filter out specific known frequencies.

Thanks to the internal arrangement of insulating materials, these materials are now protected from external influences such as weather conditions, aggressive environments or mechanical damage, and therefore retain their performance longer. In addition, the insulating mats are in a closed free space and thus cannot slip due to vibrations of the core package in the direction of the winding or impeller and thus fall into the rotating masses.

Advantageously, the insulating mats are glued, screwed or fastened with fixing eyes to the core package, or to the inside of the core package portion, or to the inside of the housing cover plates, i.e. the side walls. These insulating mats reduce noise, which, in particular, is extremely important when operating a dynamoelectric machine with a converter. Due to this additional measure, the noise limit values can be observed for the converter without change. Moreover, the converters can also be operated on the dynamoelectric machines of the invention with a lower clock frequency.

In another embodiment, the pressure plates in their cross section correspond to steel sheets. In this case, the shorter sides of the core package and the shorter sides of the pressure plates are now adjacent to the inner side of the body core package portion in the contact areas provided for this. Thus, between the surface of the core packet and the inner side of the portion of the core packet, abutment regions are obtained that extend along the entire axial length of the core packet. Insulating materials, in particular insulating mats with the preferred effects described above, can be inserted into the free spaces between the longer sides of the core package and the corresponding inner sides of the portions of the core package of the housing.

The invention, as well as other preferred embodiments of the invention, will be explained in more detail below with reference to the illustrated embodiments. They show:

1, 2: principal longitudinal sections of two embodiments;

figure 3: cross section of one embodiment in accordance with figure 1;

figure 4: cross section of one of the embodiments with insulating mats;

5-11: embodiments of various core packets;

Fig: housing with a core package;

Fig: image in perspective;

Fig.14, 15: various locations of cooling devices on the housing;

Fig: principal connection of liquid cooling to the housing;

17, 18: a removable cooler or, accordingly, a removable converter on the housing;

Fig: location of the terminal box on the housing;

Fig.20, 21: water cooling with different core packets;

Fig: protective tube for cooling holes;

Fig.23: a protective tube for cooling holes and cooling fins;

24-27: other embodiments of the housing;

28: perspective view of a dynamoelectric machine.

Figure 1 shows in a principal image a longitudinal section of the self-supporting body 1 of the dynamoelectric machine 23 according to the invention, including a stator 22, the core package 5 of which is formed by pressure plates 4 on the end sides.

In this type of construction of the self-supporting body 1, the mounting plates, reinforcements, profiles and sheathing using various connection technologies (soldering, welding, gluing) are inseparably connected to each other, so that there is a one-piece case. In this case, only the housing structure performs the supporting function. Rigidity is achieved due to the compact structure of the housing due to hollow if necessary parts of the housing with the greatest possible cross-section and at the same time a high moment of resistance. Zigovki, indentations, etc., as, for example, in Fig.21 and Fig.25, increase the rigidity of the housing 1.

The pressure plates 4 form a core package 5 and compress it in the axial direction, so that extremely narrow gaps between the individual sheets of steel are obtained. However, under capillary action, dust or, accordingly, moisture can penetrate into these gaps. The housing 1 has a portion 2 of the core package and connecting sections 3 adjacent to it in the axial direction. The connection sections 3 and the core packet section 2 in this image have different heights. The connection sections 3 can also be made with the same cross section, the same height, or, as can be seen in FIG. 1, with a larger cross section.

Moreover, in this case, the lower sections of the connection areas 3 form at the same time the legs on which the dynamoelectric machine 23 can be placed during operation. Package 5 of the core, as this image clearly shows, is located within section 2 of the core package. Section 2 of the core package of the housing 1 has no other function or connectivity. It serves to position and, if necessary, protect the core package 5. For installation, it is preferable only when the connection regions 3 and / or the core package portion 2 provide means for mounting the transport eyes 27, for example, threaded inserts.

Figure 2 shows a longitudinal section of a dynamoelectric machine 23, while the differences from figure 1 are that the steel sheets of the core package 5, as well as the pressure plates 4, have substantially the same diameter and a similar cross section. The entire core package 5 is also located in section 2 of the core package.

In Fig. 1, only the pressure plates 4 are supported on the inside of the portion 2 of the core package of the housing 1 in the provided abutment areas 7. Meanwhile, as in FIG. 2, both the pressure plates and predetermined regions of the core packet 5 are adjacent to the adjacency regions 7 of the portion 2 of the core packet, as can be seen in FIG. 3.

Figure 3 shows that, in particular, the portion 2 of the core package of the housing 1 in its outer main shape, when viewed in cross section, can be made quadrangular, octagonal or also with other angles, that is, in principle in the form of a polygon . The inner side of the portion 2 of the core package of the housing 1 forms an octagon, which, in particular, on the shorter inner sides forms abutment areas 7 for the core package 5 and / or only for the pressure plates 4 of the core package 5.

In the resulting free spaces 6 between the inner side of the portion 2 of the core package and the surface of the core package 5, as shown in FIG. 4, prefabricated insulating mats 8 are laid which are advantageously selected for the specific frequencies of the converters supplying power to the dynamoelectric machine 23. Thus, the converter 17 can also be operated with a low clock frequency. Insulating mats 8 have a very simple rectangular shape and can be purchased already pre-made. When the side walls of the housing 1 are closed, they are not visible from the outside. Due to their internal location, the insulating mats 8 are protected from external influences, such as weather conditions, or mechanical damage, or slipping.

In addition, the insulating mats 8 are preferably fixed by gluing, screwing or additional fixing eyes on the inside of the portion 2 of the core package or on the core package 5, so that slipping inside the free space 6 is avoided. This prevents the insulating mats 8 from entering the winding region of the stator 22 or the rotating parts of the dynamoelectric machine 23. Also, insulating mats can be installed on the inner side of the individual side walls 38, as, for example, as shown in FIG.

Figure 5-11 shows the principal steel sheets of the core package 5, which is located in section 2 of the core package. The steel sheets have in principle an octagonal basic shape, which is maintained despite measures that increase the surface, such as nicks, indentations on the outer perimeter or inside the steel sheet. In this case, the octagonal main shape has shorter sides 25 and longer sides 24, which alternate in the circumferential direction and, thus, provide the ability to position and fix the core package 5 along its shorter sides 25 and abutment regions 7 on the inner side of the package section 2 the core of the housing 1. The steel sheets have, in principle, a bore 9 of the stator, which is surrounded by grooves 10 and teeth of 11 steel sheets. In this case, the steel sheets are always located perpendicular to the virtual axis 26.

The recesses 34 in the steel sheets and, as a result, also in the core package 5, which extend in the axial direction, are intended to accommodate the liquid cooling pipes of the dynamoelectric machine 23 and / or serve as ventilation ducts for self-ventilation or forced ventilation. The configuration of the cooling fins 33 located on the outer circumference is in particular designed so that they can also serve as clamping slots 39 for snap-on liquid cooling pipes 37.

In addition to figure 10, the back of the yoke of the stator 22 does not have recesses, so that the passage of the lines of the magnetic field caused by the winding system in the grooves 10 does not experience negative effects. The back of the yoke in this case means essentially the annular region of the steel sheets, which adjoins the grooves radially from the outside.

In this case, the back of the yoke extends without any recesses in a radially preferred manner to at least half the depth of the groove.

In other words, the annular region of the back of the yoke has in its radial extent at least one value that corresponds to half the depth of the groove of the corresponding steel sheet or, respectively, of the core package.

Figure 10 shows additional recesses in the area of the back of the yoke, which are located essentially opposite the shorter side 25. In this case, existing heat sources can be further cooled.

12 is a perspective view of a core package 5 in a housing 1, wherein the core package 5 is formed of steel sheets in accordance with FIG. 7. In this case, the core package 5 was axially moved through the connection section 3 into the core package section 2. Preferably, the other connection portion 3 or the core packet portion 2 has an end stop, which allows the core packet 5 to be pushed into the housing 1 to a certain depth.

The connection sections 3 have openings 12, which, in particular, are suitable for installing cooling channels, terminal boxes, etc. In addition, the connection sections 3 have zigzags 36 at their corners, which improve the rigidity of the housing 1.

FIG. 13 shows the mounting process on the housing 1 similar to FIG. 12, wherein the core package 5 with the winding not shown in more detail and the protective cover 35, depending on the performance of the protection class according to IEC 34-5, is inserted into the housing 1 in the axial direction .

On Fig, as in the following figures, examples of the implementation of the concept proposed by the invention are shown, namely that now the ventilation device 14, terminal box 20, etc. are installed only through the connection sections 3. So, FIG. 14 shows a ventilation device 14 connected to the axial connection portion 3. In this case, for example, forced cooling of the dynamoelectric machine 23 is possible. Section 2 of the core package remains unchanged.

In addition, in accordance with FIG. 15, a cooling device or forced cooler may also be located above the connection portion 3.

In Fig.16 shows the principal possibility of connecting 15 liquid cooling to a dynamoelectric machine 23. Of course, for this, in the recesses 34 (see, in particular, Figs. 5-11) inside the core package 5 or on the package 5 of the stator core 22 pipes must be installed 37 cooling and hydraulically connected to the end sides of the core package 5 inside the connection areas 3.

On Fig shown in another embodiment, the housing 1 with its section 2 of the core package and two sections 3 of the connection. The openings 12 of the connection sections 3 flow into the heat exchanger 16, preferably an air-air or air-water heat exchanger, while the heated or, respectively, re-cooled cooling air is discharged or, accordingly, is supplied to the dynamoelectric machine 23 through the openings 12 of the sections 3 connectivity. Section 2 of the core package remains unchanged.

On Fig in addition to the embodiment in accordance with Fig.17 shows the Converter 17, which is placed on the heat exchanger 16 or forms together with the heat exchanger 16 one structural unit. The Converter 17 is simultaneously cooled by the heat exchanger 16. The electrical connecting wires for this are supplied through the heat exchanger 16 or through the connection section 3 to the stator winding system 22 of the dynamoelectric machine 23.

FIG. 19 shows a terminal box 20 in a connection portion 3, the terminal box 20 being oriented with its external electrical connector 21, which can be mounted in a wide variety of directions by means of, in particular, a lockable rotation mechanism.

All connected elements, such as terminal box 20, heat exchanger 16, transducer 17, etc., can be installed individually or in any combination on the connection sections 3 and through the openings 12 can be contacted with the winding or cooling devices of the dynamoelectric machine 12, etc.

To implement the structural forms in accordance with IEC 34-7, the necessary flanges, legs 18, etc., are now provided only in connection sections 3.

20 shows a cooling system meanderingly arranged around the core package 5, the cooling pipes 37 of which are located around the perimeter of the core package 5 in the clamping grooves 39. Other recesses 34 inside the core package 5 are primarily used for air cooling. Section 2 of the core package for the purpose of illustrating the image in this figure is made in the axial direction significantly longer than the core package 5, so that it is possible to better show the area 7 of the fit.

On Fig shows a different image of a dissected housing 1, providing for sections 3 of the connection of the supporting flaps 19, in which the rotor is supported. The rotor in this case is made in the form of a squirrel-cage rotor, it can be, for example, also a rotor with constant excitation of a synchronous machine.

As shown in FIG. 20, liquid cooling is located around the perimeter of the core package 5. The liquid cooling connection 15 is on the side opposite to the drive of the dynamoelectric machine 23, i.e., on the side opposite to the protruding end 13 of the shaft. The stator 22 is shown without a winding system for visibility.

Zigovki 36 reinforce section 2 of sheet steel. Legs 18 are located in sections 3 of the connection.

Figures 22 and 23 respectively show protective covers 35 which cover the winding system and / or cooling pipes 37 and thus protect against external influences, depending on the requirements of the protection class according to IEC 43-5. The ribs or zigovki reinforce the stiffness of the protective tubes 35.

25 shows a housing 1, in which, in comparison with the embodiments described so far, the main idea of the invention has been preserved, however, in the region 2 of the core package, the side walls 38 are open. At the same time, a relatively higher rigidity is achieved in comparison with open-frame machines.

Preferably, the initial side walls 38 are replaceable. Each opening in a wide variety of side walls can be closed. Using the side walls 38 with another (polymer material, fiberglass, steel ...) or, accordingly, a thicker or thinner material, the vibrational properties of the housing 1 can be influenced. The side walls 38 in another embodiment have an insert that extends into the free space 6. These are, for example, closed or perforated fasteners for insulating material.

In order, however, to further increase rigidity, if necessary, as shown in FIG. 24, jumpers 28 are provided in the remaining openings of the open side walls.

Due to the missing side walls 38 of the portion 2 of the core package, as shown in FIG. 26, the abutment areas 7 can be especially well machined, for example, with a turning tool, since the working areas 29 of the cutting machine turning tool extend beyond the boundary edges 30.

On Fig in the perspective view shows the housing 1 with open side walls, which on the axial ends of its section 2 of the core package has excess amounts of material, especially suitable for installing the transport eye 27. One hole 12 of the right section 3 of the connection, for example, is closed by a lid . In this case, openings 12 not occupied by functional elements, such as coolers, terminal boxes 20, can be closed in such a way that the corresponding protection class is maintained.

On Fig shows the dynamoelectric machine 23 in one of the possible embodiments of the described concept of the platform, while from one section 3 of the connection is issued protruding end 13 of the shaft, which is held in the support plate 19 in this area 3 of the connection. In addition, the openings 12 of this connection area 3 are provided with a ventilation grill 31 and a terminal box 20. Also, transport eyes 27 are installed in the connection sections 3. The other connection section 3 has an axial ventilation cap 32. The side wall 38 is closed by screw connections.

Claims (21)

1. A dynamoelectric machine (23) with a self-supporting body (1), which has a polygonal section (2) of the core package and at least one connection section (3) in the axial extension of the polygonal section (2) of the core package, and the section (2) of the package the core contains the stator core packet (5) formed from axially sheared steel sheets (22), fixes and surrounds it at least in some areas with closed or closed side walls from all sides, that is, on the side surfaces of the housing (1) at this individual steel sheets have an external main shape, in particular, with an octagonal cross section in which there are
- a bore (9) of the stator, which is surrounded by radially spaced around the perimeter of the bore (9) of the stator, evenly distributed grooves (10),
- radially adjacent to it the back of the yoke, which passes at an equal distance from the bore (9) of the stator,
- and axial recesses (34) of the steel sheet in the areas between the back of the yoke and the outer main shape of the steel sheets,
moreover, the section (2) of the core package of the self-supporting body (1) serves to fix the stator core package (5) (22) in predetermined areas (7) of the fit between the section (2) of the body core package (1) and the stator core package (5) ( 22)
wherein the stator core (22) forming the packet (5), axially arranged one after the other, the steel sheets on their outer sides - with the exception of the abutment regions (7) - have recesses (34) as surface-increasing structures, and recesses (34 ) in the form of cooling fins are located on the outer surface of the core package (5), while maintaining the external basic shape of the steel sheets. 2. Dynamoelectric machine (23) according to claim 1, characterized in that the recess (34) on the surface in the areas between the back of the yoke and the external main shape of the steel sheets is made in the form of a cooling rib (33) and a clamping groove (39) for pipes ( 37) cooling. 3. The dynamoelectric machine (23) according to claim 1, characterized in that at least some predetermined number of recesses (34) inside the areas between the back of the yoke and the external main shape of the steel sheets are suitable for accommodating cooling pipes (37). 4. The dynamoelectric machine (23) according to claim 2, characterized in that at least some predetermined number of recesses (34) inside the areas between the back of the yoke and the external main shape of the steel sheets are suitable for accommodating cooling pipes (37). 5. The dynamoelectric machine (23) according to claim 1, characterized in that at least in a predetermined number of recesses (34), cooling pipes (37) are placed inside the areas between the back of the yoke and the external main shape of the steel sheets. 6. The dynamoelectric machine (23) according to claim 2, characterized in that cooling pipes (37) are placed inside the regions between the back of the yoke and the external main shape of the steel sheets, at least in a predetermined number of recesses (34). 7. Dynamoelectric machine (23) according to claim 5 or 6, characterized in that the cooling pipes (37) form a closed fluid circulation circuit. 8. Dynamoelectric machine (23) according to claim 7, characterized in that the circulating fluid circuit meander-like passes around the back of the yoke. 9. A dynamoelectric machine (23) according to claim 5, characterized in that the dynamoelectric machine (23) has two or more closed fluid circulation circuits, which are formed by cooling pipes, with a certain set number of fluid circulation circuits passing in a clockwise direction and some the preset number of circulating fluid circuits runs counterclockwise in a meander-like manner around the back of the yoke. 10. The dynamoelectric machine (23) according to claim 6, characterized in that the dynamoelectric machine (23) has two or more closed fluid circulation circuits, which are formed by cooling pipes, and a certain specified number of fluid circulation circuits passes in a clockwise direction and some the preset number of circulating fluid circuits runs counterclockwise in a meander-like manner around the back of the yoke. 11. Dynamoelectric machine (23) according to any one of claims 1 to 6, 8, 9, 10, characterized in that air cooling of the dynamoelectric machine (23) is additionally provided. 12. Dynamoelectric machine (23) according to claim 7, characterized in that it further provides for air cooling of the dynamoelectric machine (23). 13. The dynamoelectric machine (23) according to any one of claims 1 to 4, characterized in that only air cooling of the dynamoelectric machine (23) is provided exclusively. 14. Dynamoelectric machine (23) according to any one of claims 1 to 6, 8, 9, 10, 11, characterized in that the portion (2) of the core package on the inner side has predetermined areas (7) of the abutment of the package (5) of the stator core (22) to the portion (2) of the core package of the housing (1) for positioning and fixing the core package (5). 15. The dynamoelectric machine (23) according to claim 7, characterized in that the portion (2) of the core packet on the inner side has predetermined areas (7) of the abutment of the stator core packet (5) (22) to the portion (2) of the core package of the housing ( 1) for positioning and fixing the package (5) of the core. 16. The dynamoelectric machine (23) according to claim 11, characterized in that the portion (2) of the core package on the inner side has predetermined areas (7) of the abutment of the package (5) of the stator core (22) to the section (2) of the package of the core of the housing ( 1) for positioning and fixing the package (5) of the core. 17. The dynamoelectric machine (23) according to 14, characterized in that the stator core package (5) is formed by pressure plates (4), with only pressure plates (4) or core package (5) and pressure plates (4) at least one section of its, when viewed in the circumferential direction, the shorter sides (25) are adjacent to the areas of contact (7). 18. A dynamoelectric machine (23) according to claim 15 or 16, characterized in that the stator core package (5) is formed by pressure plates (4), with only pressure plates (4) or core package (5) and the pressure plates (4) with at least one of their sections, when viewed in the circumferential direction, of the shorter sides (25) are adjacent to the areas of contact (7). 19. The dynamoelectric machine (23) according to 14, characterized in that hinged elements such as cooling systems, terminal boxes (20), support flaps (19) or cooling units are provided exclusively over the housing connection section (1) for the stator (22) and / or rotor. 20. A dynamoelectric machine (23) according to any one of claims 15-17, characterized in that hinged elements such as cooling systems, terminal boxes (20), support flaps (19) are provided exclusively over the housing connection section (1) ) or cooling units for the stator (22) and / or rotor. 21. The dynamoelectric machine (23) according to claim 18, characterized in that hinged elements such as cooling systems, terminal boxes (20), support flaps (19) or cooling units are provided exclusively over the housing connection section (1) for the stator (22) and / or rotor.

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