• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a stator arrangement for an axial flux machine, comprising a stator with a plurality of stator teeth (1), which stator teeth (1) in the circumferential direction (12) concentrically distributed and arranged in the axial direction (11) separated by a rotor by an air gap, which Statorzähne (1) comprises two in the axial direction (11) opposite end portions and between the end portions of a toothed core (4), and wherein each toothed core (4) has a core cross-sectional area (5) and is wound with at least one coil winding (8), and wherein the first, the rotor-facing end portion of each stator tooth (1) as a tooth head (2) is formed, the head cross-sectional area (3) is greater than the core cross-sectional area (5), and wherein the second, facing away from the rotor end portion of each stator tooth (1) as Tooth base (6) is formed with a foot cross-sectional area (7) which is connected to a return plate (10), wherein the tooth head (2) each stator tooth (1) and the return plate (10) each have at least one recess (14) for at least one tooth lock (9), and each stator tooth (1) by means of the at least one tooth lock (9) with the return plate (10) in at least Axially secured connected.
    公开号:AT520876A1
    申请号:T50128/2018
    申请日:2018-02-09
    公开日:2019-08-15
    发明作者:
    申请人:Miba Sinter Austria Gmbh；
    IPC主号:
    专利说明:

    Summary
    The invention relates to a stator arrangement for an axial flow machine, comprising a stator with a plurality of stator teeth (1), which stator teeth (1) are distributed concentrically in the circumferential direction (12) and are separated from a rotor in the axial direction (11) by an air gap, which Stator teeth (1) comprise two end sections opposite each other in the axial direction (11) and a tooth core (4) between the end sections, and wherein each tooth core (4) has a core cross-sectional area (5) and is wrapped with at least one coil winding (8), and wherein the the first, the rotor facing end section of each stator tooth (1) is designed as a tooth head (2), whose head cross-sectional area (3) is larger than the core cross-sectional area (5), and wherein the second end section facing away from the rotor, each stator tooth (1) as Tooth base (6) is formed with a base cross-sectional area (7), which is connected to a yoke plate (10), the tooth head (2) each stator tooth (1) and the back plate (10) each have at least one recess (14) for at least one tooth lock (9), and each stator tooth (1) by means of the at least one tooth lock (9) with the back plate (10) in at least Axial direction is securely connected.
    Fig. 4/37
    N2017 / 36400 AT-00
    The invention relates to a stator arrangement for an axial flow machine, and to an axial flow machine with such a stator arrangement.
    The prior art discloses electrical machines with a disk-shaped rotor and a stator arranged parallel thereto, and find e.g. application in axial flow machines. The rotor usually has a plurality of permanent magnets which, separated by an air gap, rotate past opposite electromagnetically excitable poles of the stator. The electromagnetically excitable poles are e.g. formed as stator teeth made of a soft magnetic material, around the tooth core of which a coil winding induces a magnetic field when energized. The torque is introduced to the rotor by clocked energization of the stator teeth or their coil windings, which are arranged uniformly and concentrically in the circumferential direction of the stator.
    In an axial flow machine, an axial force acts on the stator. As proposed in DE 102016203140 A1, the stator teeth can be connected to the housing of the electrical machine by means of a clamping element. The clamping element presses the stator foot into an undercut in a recess in the housing and thus fastens the stator tooth to the housing.
    Depending on the engine design and application, very high power and / or torque densities may be required. Furthermore, it may be necessary to electrically and / or magnetically connect the stator teeth to one another via a yoke plate or a magnetic yoke on the side facing away from the rotor in order to achieve an improved magnetic flux density.
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    However, considerable time and / or mechanical effort is required to implement known stator arrangements with a plurality of stator teeth with stator windings or coil windings. An improved magnetic flux density of the stator arrangement can bring about an increased efficiency of the axial flux machine, as a result of which a comparatively smaller installation space can be achieved with comparable efficiency of known stator arrangements.
    The object of the present invention was to overcome the disadvantages of the prior art and to provide a stator arrangement by means of which a user is able to carry out a relatively simple and safe assembly of a stator for axial flux machines.
    This object is achieved by a device, a stator arrangement according to the invention, and an axial flux machine, which comprises the stator arrangement, according to the claims.
    The stator arrangement according to the invention for an axial flux machine comprises a stator with a plurality of stator teeth, which stator teeth are distributed concentrically in the circumferential direction and are separated in the axial direction from a rotor by an air gap, which stator teeth comprise two end sections lying axially opposite and a tooth core between the end sections. and wherein each tooth core has a core cross-sectional area and is wound with at least one coil winding, and wherein the first end section facing the rotor of each stator tooth is designed as a tooth head, the head cross-section area of which is larger than the core cross-sectional area, and wherein the second end section facing away from the rotor each stator tooth is designed as a tooth base with a foot cross-sectional area, which is connected to a return plate, and wherein the tooth head of each stator tooth and the return plate each have at least one recess have for at least one tooth lock, and each stator tooth is connected by means of the at least one tooth lock to the back plate secured against displacement in at least the axial direction.
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    The stator arrangement according to the invention thus enables the stator teeth to be secured in the axial direction, as a result of which axial forces on the stator teeth can be absorbed efficiently. In the context of the invention, a recess can be a depression such as e.g. be a phase, a paragraph, a notch, a groove and the like, but also be a continuous opening in the limit case.
    Due to the enlarged head cross section of the stator teeth compared to the core cross section, the tooth head can act as a magnetic flux collector. In order to close the magnetic field lines in the return plate, the stator teeth should be connected to it. The yoke plate can thus act as a magnetic yoke. The magnetic flux density or the distribution of the magnetic field in the stator arrangement presented can thus be improved compared to stator teeth without a stator head. Dental protection also has the advantage that the ratio of the electromagnetically excitable head cross section to the core cross section of the stator teeth can be increased compared to an arrangement without tooth protection, since the mechanical load on the tooth core in the axial direction decreases significantly compared to a stator arrangement without tooth protection. With the help of the tooth lock, reduced core cross-sections and, conversely, an increased number of windings or the winding area of the coil winding can be realized, as a result of which the efficiency can be increased.
    In the stator arrangement presented, the stator head, stator core and / or stator foot can also be provided with a coil winding relatively easily before being assembled with the stator yoke or the yoke plate. The coil winding should be separated from the stator tooth and / or the yoke plate by an electrically insulating insulation, for which usually e.g. Insulating paper is used. It is also conceivable that the coil windings are prefabricated or already on a e.g. Insulating winding carriers are provided before the stator assembly is assembled. This enables a comparatively simple, step-by-step assembly, which can even be carried out automatically. In return, a one-piece Aus / 37
    N2017 / 36400-AT-00 guidance of the stator yoke with excellent stator teeth and the mentioned tooth heads require complicated wrapping of the stator cores with the coil windings and, moreover, result in lower filling levels.
    The return plate can be composed of a plurality of stator laminations which are insulated from one another. According to the invention, the at least one recess of the return plate can be designed in such a way that the return plate does not have to be completely penetrated by the tooth lock, but rather that the recess only extends over part of the stator plates in the axial and / or radial direction. As a result, the stator fuse can be connected to the return plate, but the magnetic flux guidance on the side of the return plate facing away from the rotor is essentially not influenced.
    The stator arrangement according to the invention can moreover be connected by means of adhesive connections between the tooth head, tooth core, tooth base and the yoke plate, the tooth lock providing a significant advantage in the curing process of the adhesive with regard to securing against displacement. In addition, the stator arrangement by means of the tooth lock can reduce or prevent displacement or loosening of the teeth, at least in the axial direction, even in the case of poorly executed or, in the extreme case, even missing adhesive connections.
    Furthermore, it is part of the inventive idea that the at least one tooth lock can be designed in such a way that the stator arrangement is positively connected to a housing. This can be done by one or more dental locks. The tooth lock can be designed in such a way, in addition to securing a stator tooth on the yoke plate, to connect the stator arrangement to the housing in the axial and / or radial and / or circumferential direction.
    It is also conceivable that the stator arrangement comprises at least one tooth lock, which is designed as a fixing means, preferably a screw. Here, the fixing means is arranged such that it penetrates the respective stator tooth in the axial direction with the yoke plate and / or a housing / 37
    N2017 / 36400-AT-00 connects, the at least one recess of the back plate e.g. can be designed as a thread or through opening.
    Furthermore, it can be expedient if the tooth head, the tooth core and the tooth base are formed in one piece as a stator tooth.
    This significantly simplifies the assembly of the stator tooth on the back plate as described above, as well as the merging with a coil winding. Furthermore, the power density is increased by the reduced number of interfaces, such as between the stator tooth components tooth tip and tooth core or between tooth core and tooth root. It is particularly advantageous if the tooth core and tooth base are made in one piece or in one piece. In addition, inaccuracies caused by manufacturing tolerances of the individual components can be avoided with a one-piece design of the stator tooth and the magnetic flux guidance can thus be optimized.
    Furthermore, it can be provided that the stator tooth, consisting of tooth head, tooth core and tooth base, and / or the back plate is made of a soft magnetic composite material.
    The use of a soft magnetic composite or composite material (SMC - Soft Magnetic Composite) enables the production of complex component geometries with almost magnetically isotropic properties. In this way, the cutouts for the tooth securing do not have any significant impairment of the magnetic flux guidance. The use of soft magnetic composite components, such as the stator teeth and / or the yoke plate, using soft magnetic composite materials generally has the disadvantage that these materials are relatively brittle. By means of the stator arrangement according to the invention, this disadvantage can be compensated for by the use of a tooth lock, whereby the freedom of design of the stator tooth geometry is increased and at the same time the achievable power densities can be increased.
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    In addition, it can be provided that the at least one tooth lock has latching elements which are designed to complement the shape and / or function of the at least one recess in the tooth head and the yoke plate.
    In the context of this application, latching elements are to be understood to mean all types of extensions which can be designed as angled and / or stepped hooks or noses. The locking elements enter into a positive connection with the recesses of the tooth head or the yoke plate. The tooth lock is thus additionally secured against unintentional loosening by means of the locking elements. Furthermore, by using locking elements at the respective ends, which are connected to the stator head or the yoke plate, the corresponding recesses can be made very compact. A secure engagement and connection of the tooth lock is made possible with at the same time little material loss of the stator head or the yoke plate.
    Also advantageous is an embodiment according to which it can be provided that the at least one recess on the tooth head is arranged in the radial direction on the outside and / or inside and / or in the circumferential direction.
    If the at least one recess is arranged on the tooth head, which extends inward from the outside in the radial direction or extends outward in the radial direction, an undesired enlargement of the stator diameter to the outside or an undesired reduction of the available stator inner diameter due to the tooth lock can be arranged be avoided. This enables a compact design of the stator arrangement, since the tooth lock engages in the stator tooth, so to speak, instead of securing the stator tooth from the outside. Analogously, the at least one recess on the tooth heads can be arranged on at least one side in the circumferential direction. The stator teeth are arranged separately from one another in the circumferential direction, as a result of which the tooth lock can be arranged between them. Consequently, the recess on the back plate can be designed such that the back / 37
    N2017 / 36400-AT-00 end plate does not have to be penetrated by the tooth lock, only the inclusion of the end of the tooth lock must be guaranteed in order to fulfill the desired function.
    According to a development, it is possible for the yoke plate to have tooth-complementary receptacles for the tooth base, the receiving cross-sectional area of which essentially corresponds to the foot cross-sectional area.
    The stator teeth can thus be at least partially received by the back plate in the stator arrangement according to the invention. This allows additional securing and thus increased resilience of the stator teeth against displacement in the radial and / or circumferential direction. The recordings of the yoke plate do not penetrate them completely in the axial direction. That means e.g. one or more stator plates of the yoke plate, or e.g. a residual wall thickness can be provided in a yoke plate made of soft magnetic composite material. In this way, a relatively cost-saving and efficient limitation of the stator teeth in the axial, radial and / or circumferential direction can be formed. In addition, good magnetization of the stator teeth or the yoke plate can be achieved.
    Furthermore, it can be expedient if at least one stator tooth is additionally secured on its tooth base to the return plate via an adhesive connection.
    The adhesive connection of the tooth base can be formed at least in the axial direction over at least parts of the foot cross-sectional area. Alternatively or in combination, the adhesive connection can be formed over at least parts of the lateral surface in the radial and / or circumferential direction of the tooth base. It is advantageous here if the yoke plate has receptacles corresponding to the tooth base geometry. This measure significantly increases operational safety.
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    Furthermore, it may be expedient if the tooth lock is designed in such a way that the stator tooth can be connected to the yoke plate without play while exerting a pretensioning force.
    By exerting a prestressing force, the stator tooth is held in its position in the axial, circumferential and radial directions by pressing it against the return plate. In this way, an optional adhesive connection of the stator tooth to the return plate can be secured during the curing process, which improves the quality of the stator arrangement. In addition to non-conductive plastics, composite materials such as a non-magnetic metal spring, which is encased by an electrically non-conductive plastic, are also conceivable as materials for tooth retention. By using such a composite material, the pretensioning force can even be increased compared to a tooth lock made of plastic.
    In addition, it can be provided that the tooth lock is designed in the form of a clamp and is arranged on at least one side of the stator tooth and extends between the stator tooth and the coil winding.
    The clamp shape of the tooth lock should be understood here to mean that the tooth lock extends from the tooth head on the inside of the tooth core and accordingly has a plurality of sections which can be angled relative to one another. The return plate is connected to the end of the tooth lock facing away from the rotor. The tooth lock can thus be formed running from the tooth head along the outer surface of the tooth core to the back plate, which enables the tooth lock to be arranged from the outside within the coil winding or between an optional insulation of the coil winding and the stator tooth. As a result, a very compact design of the stator arrangement can be realized without any parts projecting outwards or inwards in the radial direction.
    Furthermore, it can be provided that the tooth lock is designed as an electrically insulating winding support between the coil winding and the tooth core and / or the tooth head and / or the yoke plate.
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    By designing the tooth lock as a combination with the electrically insulating insulation as an electrically insulating winding carrier, the stator arrangement can be assembled in a relatively simple manner. A complex design of the insulation using insulating paper can be saved in this way. The electrically insulating winding carrier can have one or more latching elements which can engage on the tooth head and / or the yoke plate in the manner mentioned above and is thus designed in one piece as a tooth lock. The combination of tooth lock and winding support according to the invention can be wrapped before the stator teeth are joined to the return plate, which results in a time advantage during production. Automated production is also conceivable here.
    According to a special embodiment, it is possible for the tooth lock to be designed as an electrically insulating winding carrier in the form of a plastic injection molded part enclosing at least parts of the tooth core.
    It is also conceivable for the electrically insulating winding carrier to be applied around the stator tooth as a tooth lock by means of an upstream injection molding process. For this purpose, the stator teeth are arranged in a plastic injection molding machine and overmolded with a, preferably thermoplastic, plastic at least in the area of the underside of the tooth head and at least parts of the circumference of the tooth core. For this purpose, the at least one recess of the tooth head can be designed such that the injected plastic at least partially fills these recesses, as a result of which a material and / or positive connection of the winding support to the tooth head can be produced. For this purpose, the at least one recess can also be designed to extend circumferentially around the tooth head, as a result of which the connecting surface between the tooth lock and the tooth head is increased.
    According to an advantageous development, it can be provided that the tooth lock is designed in the circumferential direction in the form of a ring segment in such a way that at least two stator teeth can be connected together with the yoke plate.
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    In this way, at least two stator teeth can be relatively easily connected to the yoke plate at the same time by means of a tooth lock. The ring segment shape of the tooth lock therefore applies to tooth locks fitted inside and / or outside in the radial direction. The workload can also be reduced by the relatively simple, simultaneous assembly of several stator teeth.
    In particular, it can be advantageous if the tooth lock is designed to be closed in the circumferential direction, so that all the stator teeth can be connected together with the yoke plate.
    It is therefore conceivable that all stator teeth can be connected to the yoke plate by means of a closed ring-shaped tooth lock. Analogous to the ring segment-shaped design of the tooth lock, this form of tooth lock can be arranged in the radial direction inside and / or outside in order to secure the stator teeth. A reduced assembly time and increased security can be achieved in this way.
    Furthermore, it can be provided that the at least one tooth lock has locking elements which are formed opposite one another in the circumferential direction and is arranged in the circumferential direction between two adjacent stator teeth.
    The locking elements can be designed as extensions of the tooth lock, to the at least one recess of the tooth head in a form and function complementary manner. As a result, stator teeth which are arranged adjacent to one another in the circumferential direction can each be secured on at least one side by means of a tooth lock. The assembly of the plurality of stator teeth on the back plate is thus significantly simplified.
    Also advantageous is a configuration according to which it can be provided that the at least one tooth lock is designed in such a way that the stator arrangement can be positively connected, preferably coupled, to a housing.
    By forming one or more tooth locks, which has at least one locking element which is assigned to a holding means of the housing and is therefore referred to as a housing locking element. The housing latch element, / 37
    N2017 / 36400-AT-00, which is assigned to the holding means of the housing, is designed to complement the shape and function of the stator tooth analogously to the above-mentioned latching elements which are assigned to a recess in the stator tooth. The holding means of the housing can e.g. be designed in the form of a housing recess or a holder to accommodate the at least one housing latch element, as a result of which the stator arrangement can be positively connected to a housing. This connection can preferably be made detachable, that is to say couplable. The advantage of this design is that, in addition to securing a stator tooth on the back plate, the stator arrangement is secured in the axial and / or radial and / or circumferential direction within the housing. The at least one housing latch element can also be formed on a tooth lock, which is designed as an electrically insulating winding carrier and already has one or more latching elements. The respective locking elements or housing locking elements can thus engage in the above-mentioned manner on the tooth head and / or the back plate, or respectively on the housing. This allows a very convenient, inexpensive assembly of the stator assembly in the housing. Due to the preferably detachable connection, the stator arrangement can be separated from the housing relatively easily in the event of a repair. In addition, the connection or coupling of the stator arrangement to the housing ensures effective protection against unwanted twisting, tilting and / or lifting of the stator arrangement within the housing. This increases the stability during operation, especially when the axial flow machine in which the stator arrangement is installed is in motion.
    An axial flux machine is thus also presented which comprises a housing and at least one stator and at least one rotor, the stator having a stator arrangement according to the invention with at least one of the above-mentioned embodiments. The at least one rotor can be designed as a disk-shaped rotor, which is formed with a plurality of permanent magnets arranged in the circumferential direction and separated from the stator teeth of the stator in the axial direction by an air gap, and is set in rotation when the coil windings are energized.
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    It is also conceivable for all of the above-mentioned embodiments that the stator arrangement is essentially symmetrical in the axial direction, which enables the use of two rotors arranged on both sides of the stator arrangement in the axial direction. The stator arrangement of the stator is connected to the housing or releasably connected.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each show in a highly simplified, schematic representation:
    Fig. 1 Sectional view through a partial section of an exemplary stator arrangement; Fig. 2 Sectional representation through partial sections of an exemplaryStator arrangement with tooth locks (a) arranged radially inside or outside; with internal tooth protection (b); as well as with tooth locks (c) arranged in a circumferential and radial direction; Fig. 3 Exploded view of an embodiment with a tooth lock designed as a winding support; Fig. 4 Sectional view of an embodiment with ring-shaped tooth lock; Fig. 5 Sectional view of an embodiment with a tooth lock designed as a circumferential direction on both sides; Fig. 6 Sectional view through partial sections of an exemplary stator arrangement with radially inward and outward arranged tooth locks with additional housing detent element (a); with externally arranged tooth lock and housing latch element (b); as well as with internal tooth protection and housing rest element (c).
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    In the introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numerals or the same component names. The location information selected in the description, e.g. above, below, to the side, etc., referring to the figure described and illustrated immediately, and if the position is changed, these are to be applied accordingly to the new position.
    1 shows a sectional illustration through a partial section of an exemplary stator arrangement. The stator teeth 1 shown have opposite end sections in the axial direction 11, i.e. a tooth head 2 and a tooth base 6, between which a tooth core 4 extends, which is wound with a coil winding 8.
    The tooth base 6 lies in the axial direction 11 on its base cross-sectional area 7 on the yoke plate 10. The tooth base 6 is formed in one piece with the tooth core 4 in the selected illustration and is connected to the yoke plate 10 and the tooth head 2 via an adhesive connection (not shown) at the interfaces. Furthermore, an insulation 19 can be seen in the sectional view, which extends at least between the coil winding 8 and the tooth core 4 or the tooth head 2 and the yoke plate 10.
    2a to 2c illustrate some exemplary embodiments according to the invention for stator arrangements with tooth lock 9. The stator tooth 1 is formed in one piece in the examples shown, which means that the tooth head 2, the tooth core 4 and the tooth base 6 are made from one piece. This can preferably be implemented through the production by means of soft magnetic composite material. 2a to 2c, FIGS. 3 and 4, receptacles 17 for the tooth base 6 can be seen in the yoke plate 10, which are essentially complementary in shape and size to the tooth base 6 or the foot cross-sectional area 7.
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    2a shows in the sectional view that two tooth locks 9 engage in the radial direction on the inside, and two tooth locks 9 in the radial direction on the outside of the tooth head 2 in recesses 14 provided therefor. The tooth locks 9 connect the stator tooth 1 to the yoke plate 10, which also has recesses 14 provided for the tooth locks 9. The arrangement of the insulation 19, which is arranged between the coil winding 8 and the stator tooth 1 or the yoke plate 10, can also be seen. The tooth lock 9 can advantageously also be formed in one piece with the insulation 19 as an electrical winding support 16, as is shown by way of example in FIGS. 3 and 6c.
    2b shows an embodiment in which a tooth lock 9 for connecting the stator tooth 1 to the yoke plate 10 engages in the radial direction 13 on the inside of the tooth head 2 and in the yoke 10 in the recesses 14 provided for this purpose. The one-piece stator tooth 1 is thus pressed against or into the yoke plate 10 by the clip-shaped tooth lock 9. The coil winding 8 is separated from the tooth lock 9 or the stator tooth 1 by insulation 19.
    Shown in Fig. 2c embodiment, wherein two tooth locks 9 for connecting the stator tooth 1 to the yoke plate 10 on the tooth head 2 are arranged laterally in the circumferential direction 12. The second ends of the tooth lock 9 engage in the yoke plate 10 in recesses 14 provided therefor.
    The examples of the tooth locks 9 shown in FIGS. 2a to 2c, 3 to 5 can each have latching elements 15 at the ends of the tooth lock 9, which engage in the recesses 14 provided on the tooth head 2 or the yoke plate 10 intervention. The design of these latching elements 15 or their corresponding recesses 14 can be designed, for example, as a one-click connection. For the sake of clarity, however, the locking elements 15 are not shown in all representations. In addition, it can be seen in the illustrations mentioned that the recesses 14 can be designed to extend inwards or outwards in the radial direction 13 around the tooth lock 9/37
    N2017 / 36400-AT-00 so that the tooth locks 9 do not protrude from the inside or outside diameter of the stator arrangement.
    3 shows several exemplary embodiments according to the invention. In the selected exploded view it can be seen that the tooth head 2 has at least one recess 14, in the specific case two recesses 14 arranged opposite one another in the radial direction, for which at least one tooth lock 9 has. Furthermore, the respective cross sections at different sections of the stator tooth 1, or respectively the head cross-sectional area 3, the core cross-sectional area 5 and the foot cross-sectional area 7, can be seen very well from this illustration. It can also be seen in FIG. 3 that the electrically insulating winding carrier 16, which electrically insulates the coil winding 8 from the stator tooth 1 and the yoke plate 10, is designed as a tooth lock 9. For this purpose, the winding carrier 16 or the tooth lock 9 has locking elements 15 corresponding to the above-mentioned recesses 14 of the tooth head 2 or yoke plate 10. The number of tooth locks 9, locking elements 15 or recesses 14, as well as their arrangement in the radial 13 and / or circumferential direction 12 can be chosen almost arbitrarily by a person skilled in the art. The decision for the present invention is that the tooth lock 9 prevents displacement of the stator tooth 1 in the axial direction 11 by connecting to the yoke plate 10 and / or a housing (not shown).
    Furthermore, a connection end of the coil winding is shown in FIG. 3, which can be insulated by the winding body, or can be inserted penetratingly into the return plate 10. Furthermore, it can be seen from FIG. 3 that the yoke plate 10 has receptacles 17 which correspond to the number of stator teeth 1 and which do not have to be formed continuously in the axial direction 11. For a better representation, the receptacle 17 is shown hatched with the receptacle cross-sectional area 18. The receptacles 17 serve to at least partially accommodate the tooth base 6 and thus additionally secure the stator tooth 1 against displacement in the radial 13 and / or circumferential direction 12.
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    The person skilled in the art recognizes from the exploded view in FIG. 3 the advantage of the present invention, namely that the winding carrier 16 designed as a tooth lock 9 may have been wound with the coil winding 8 before the stator or the stator arrangement is assembled. As a result, the assembly can be carried out in a relatively simple manner by plugging the stator tooth 1 with the electrically insulating winding carrier 16 or the tooth lock 9 designed as such or the insulation 19 designed as such, after which the stator tooth 1 is fixed to the back plate 10 can.
    Likewise, it can easily be seen from FIG. 3 that the electrically insulating winding carrier 16 can be designed as a plastic injection-molded part, which encloses at least parts of the tooth core 4. It can therefore be of advantage if the stator tooth 1 is extrusion-coated directly in this way in an injection molding process at at least the recesses 14 provided for the tooth lock 9 on the tooth head 2 and at least at parts of the tooth core 4. This should be carried out in such a way that the schematically illustrated form of an insulating winding carrier 16 is implemented with latching elements 15 projecting at least on one side in the direction of the return plate 10. Analogous to the above description, a relatively simple winding of the winding carrier-stator tooth assembly 16, 1 with the coil winding 8 can be carried out and this assembly, which also acts as a tooth lock 9, can be connected to the yoke plate 10.
    As shown in FIGS. 2a to 2c and 3 to 5, the at least one tooth lock 9 can be designed to engage in the radial direction 13 on the inside and / or outside or in the circumferential direction 12 on the tooth head 2 and / or the yoke plate 10 , For this purpose, the respective corresponding at least one recess 14 is arranged on the tooth head 2 in the radial direction 13 on the outside and / or inside and / or in the circumferential direction 12.
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    Furthermore, the stator tooth 1 can be additionally secured at least on its tooth base 6 with the yoke plate 10 via an adhesive connection. A separate representation of the adhesive connection is omitted here, since the execution of such should be sufficiently known to the person skilled in the art.
    Furthermore, the tooth locks 9 shown in FIGS. 2a to 2c and 3 to 5 can be connected to the return plate 10 by exerting a pretensioning force, as a result of which any play between the tooth base 6 and the return plate 10 is efficiently avoided. Furthermore, the tooth locks 9 can preferably be arranged symmetrically in the radial direction 13 outside and / or inside and / or in the circumferential direction 12.
    4 shows an exemplary illustration of a section through an embodiment in which toothed locks 9 in the form of ring segments are each arranged in the radial direction 13 inside and outside. In this way, two stator teeth 1 are connected to the yoke plate 10 together in the selected illustration. In this way, a plurality of stator teeth 1 can also be connected together with the yoke plate 10. In the borderline case, the at least one tooth lock 9 is closed in the circumferential direction 12 and thus connects all the stator teeth 1 to the yoke plate 10.
    5 schematically shows an exemplary embodiment according to the invention, wherein at least one tooth lock 9 has locking elements 15 formed opposite one another in the circumferential direction 12 and is arranged in the circumferential direction 12 between two adjacent stator teeth 1. In this way, the tooth lock 9 simultaneously presses two adjacent tooth heads 2 or the stator teeth 1 against the back plate 10. As can be seen particularly well from this illustration, the tooth lock 9 is designed such that only the latching element 15 engages in the corresponding recess 14 in the back plate 10 , which is not continuous in the axial direction 11.
    6 shows some exemplary embodiments of tooth locks 9, wherein at least the tooth locks 9 have at least one housing latch element 23, which is assigned / 37 to a holding means 20 of the housing 24
    N2017 / 36400-AT-00. The housing latch element 23 can be designed analogously to the above-mentioned exemplary embodiments in FIGS. 2a to 2c, 3 to 5. For the implementation of the invention, it may be sufficient that only one tooth lock 9 has at least one housing latch element 23 of this type. Preferably, however, a plurality of tooth locks 9 each have at least one housing latch element 23. As shown in FIGS. 6a to 6c, tooth locks 9 with a combination of locking elements 15 and housing locking elements 23 are possible. The housing latch elements 23 can be arranged on the inside and / or outside and / or in between on the stator teeth 1 and can couple to the housing 24 in the axial direction 11 and / or radial direction 13 and / or circumferential direction 12.
    6a shows an exemplary embodiment as an internal tooth lock 9, which have radially outwardly directed housing catch elements 23 and are designed to be complementary in shape and function to a holding means 20 of the housing 24. In the selected illustration, the holding means 20 is designed as a bow-shaped holder 21 in order to accommodate the at least one housing latch element 23. The stator arrangement is thus positively connected to the bottom of the housing in the axial direction 11.
    6b shows a further possible embodiment of a tooth lock 9, the tooth lock 9 being designed in the circumferential direction 12 in the manner of a ring segment in such a way that at least two stator teeth 1 are connected to the yoke plate 10 and have two outward-facing housing catch elements 23. To simplify the illustration, only a section of the stator arrangement is shown, and the tooth lock 9, which has the housing detent elements 23, is shown spaced apart from the associated holding means 20. The stator arrangement can be connected at least temporarily by a twisting movement by latching the housing latch elements 23 of the tooth lock 9 in the holders 21 of the housing 24. Due to the design of the holding means 20 on the inner surface of the housing 24, the housing latch elements 23 can be detached from above in the event of a repair, as a result of which the stator arrangement can be detached from the housing again.
    / 37
    N2017 / 36400 AT-00
    6c shows a further possible embodiment of a stator arrangement, the tooth lock 9 being designed in the form of a clamp as an insulating winding support 16 and extending between the stator tooth 1 and the coil winding 8. In addition to locking elements 15, which are assigned to the stator tooth 1 or the yoke plate 10, the tooth lock 9 has outward-facing housing locking elements 23, which are designed to complement the shape and function of a housing recess 22. Coupling is achieved relatively easily by inserting the stator arrangement into a housing 24. Furthermore, the design as an insulating winding support 16, on which the latching elements 15 or housing latching elements 23 are arranged, prevents the housing 24 from penetrating. This advantage also applies to the aforementioned embodiments.
    The stator arrangement according to the invention can accordingly comprise tooth locks 9 which enable the stator teeth 1 to be secured to the back plate 10 and at the same time to secure the stator arrangement thus created in the axial direction 11, the radial direction 13 and the circumferential direction 12. The above-mentioned examples of the stator arrangements in the description of FIGS. 2 to 5 can be carried out individually or in combination with the formation of at least one tooth lock 9 with at least one housing latch element 23, as a result of which the stator arrangement can be positively connected to a housing 24. This connection is preferably made detachable.
    The exemplary embodiments show possible design variants, it being noted at this point that the invention is not limited to the specially illustrated design variants of the same, but rather also various combinations of the individual design variants with one another are possible and this variation possibility is based on the teaching of technical action through the present invention Ability of the specialist working in this technical field.
    The scope of protection is determined by the claims. However, the description and drawings are to be used to interpret the claims. Individual features or combinations of features from those shown and described / 37
    N2017 / 36400-AT-00 different embodiments can represent independent inventive solutions. The object on which the independent inventive solutions are based can be found in the description.
    All information on value ranges in the objective description is to be understood so that it includes any and all sub-areas, e.g. the information 1 to 10 is to be understood so that all sub-areas, starting from the lower limit 1 and the upper limit 10, are included, i.e. all sections start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
    For the sake of order, it should finally be pointed out that, for a better understanding of the structure, elements have sometimes been shown to scale and / or enlarged and / or reduced.
    / 37
    N2017 / 36400 AT-00
    LIST OF REFERENCE NUMBERS
    Stator tooth / teeth
    addendum
    Head cross-sectional area
    toothed core
    Core cross-sectional area
    tooth root
    Fußquerschnittsfläche
    coil winding
    teeth lock
    Backing plate
    axially
    circumferentially
    radial direction
    recess
    locking elements
    winding support
    admission
    Receiving cross-sectional area
    insulation
    holding means
    bracket
    housing recess
    Housing locking element
    Housing / 37
    N2017 / 36400 AT-00
    权利要求:
    Claims (17)
    [1]
    claims
    1. Stator arrangement for an axial flow machine, comprising a stator with a plurality of stator teeth (1), which stator teeth (1) are distributed concentrically in the circumferential direction (12) and are arranged in the axial direction (11) separated from a rotor by an air gap, which stator teeth ( 1) two end sections lying opposite each other in the axial direction (11) and between the end sections a tooth core (4), and wherein each tooth core (4) has a core cross-sectional area (5) and is wrapped with at least one coil winding (8), and wherein the first, End section of each stator tooth (1) facing the rotor is designed as a tooth head (2), the head cross-sectional area (3) of which is larger than the core cross-sectional area (5), and the second end section of the stator tooth (1) facing away from the rotor is designed as a tooth base ( 6) is formed with a foot cross-sectional area (7), which is connected to a return plate (10), characterized in that the tooth head (2) j Each stator tooth (1) and the back plate (10) each have at least one recess (14) for at least one tooth lock (9), and each stator tooth (1) by means of the at least one tooth lock (9) with the back plate (10) in at least Axial direction is securely connected.
    [2]
    2. Stator arrangement according to claim 1, characterized in that the tooth head (2), the tooth core (4) and the tooth base (6) are formed in one piece as a stator tooth (1).
    [3]
    3. Stator arrangement according to claim 1 or 2, characterized in that the stator tooth (1) consisting of tooth head (2), tooth core (4) and tooth base (6), and / or the back plate (10) are made of a soft magnetic composite material.
    23/37
    N2017 / 36400 AT-00
    [4]
    4. Stator arrangement according to one of the preceding claims, characterized in that the at least one tooth lock (9) has latching elements (15) which are complementary in shape and / or function to the at least one recess (14) of the tooth head (2) and the back plate (10). are trained.
    [5]
    5. Stator arrangement according to one of the preceding claims, characterized in that the at least one recess (14) on the tooth head (2) in the radial direction (13) outside and / or inside and / or in the circumferential direction (12) is arranged.
    [6]
    6. Stator arrangement according to one of the preceding claims, characterized in that the return plate (10) to the tooth base (6) has complementary receptacles (17), the receiving cross-sectional area (18) substantially corresponds to the foot cross-sectional area (7).
    [7]
    7. Stator arrangement according to one of the preceding claims, characterized in that at least one stator tooth (1) on its tooth base (6) with the return plate (10) is additionally secured by an adhesive connection.
    [8]
    8. Stator arrangement according to one of the preceding claims, characterized in that the at least one tooth lock (9) is designed such that the stator tooth (1) can be connected to the yoke plate (10) without play while exerting a pretensioning force.
    [9]
    9. Stator arrangement according to one of the preceding claims, characterized in that the tooth lock (9) is formed in a clamp shape and is arranged on at least one side of the stator tooth (1) between the stator tooth (1) and the coil winding (8).
    24/37
    N2017 / 36400 AT-00
    [10]
    10. The stator arrangement according to claim 9, characterized in that the tooth lock (9) is designed as an electrically insulating winding support (16) between the coil winding (8) and the tooth core (4) and / or the tooth head (2) and / or the return plate (10) is.
    [11]
    11. Stator arrangement according to claim 10, characterized in that the tooth lock (9) is designed as an electrically insulating winding support (16) in the form of an at least part of the tooth core (4) enclosing plastic injection molded part.
    [12]
    12. Stator arrangement according to one of claims 1 to 9, characterized in that the tooth lock (9) is formed in the circumferential direction (12) in such a ring segment shape that at least two stator teeth (1) can be connected together with the yoke plate (10).
    [13]
    13. The stator arrangement as claimed in claim 12, characterized in that the tooth lock (9) is designed to be closed in the circumferential direction (12), so that all the stator teeth (1) can be connected together with the yoke plate (10).
    [14]
    14. Stator arrangement according to one of claims 1 to 9, characterized in that the at least one tooth lock (9) in the circumferential direction (12) has opposite locking elements (15) and is arranged in the circumferential direction (12) between two adjacent stator teeth (1).
    [15]
    15. Stator arrangement according to one of the preceding claims, characterized in that the at least one tooth lock (9) is designed in such a way that the stator arrangement can be positively connected, preferably coupled, to a housing (24).
    [16]
    16. Axial flow machine, comprising a housing (24), a stator and at least one rotor, the stator being a
    25/37
    N2017 / 36400 AT-00
    Stator arrangement according to one of the preceding claims, and wherein the stator arrangement of the stator connected to the housing (24), preferably releasably connected, is present.
    [17]
    17. Axial flow machine according to claim 16, characterized in that the housing (24) has at least one holding means (20).
    26/37
    N2017 / 36400 AT-00
    Fig.1
    Miba sinter
    Austria GmbH
    27/37
    17 10
    Figure 2c
    Miba Sinter Austria GmbH
    28/37
    Figure 3
    29/37
    30/37
    31/37
    Miba Sinter Austria GmbH
    32/37 Austrian
    Patent Office
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    同族专利:
    公开号 | 公开日
    CN110138108A|2019-08-16|
    US10886796B2|2021-01-05|
    BR102019002692A2|2019-10-15|
    AT520876B1|2020-04-15|
    US20190252930A1|2019-08-15|
    DE102019000666A1|2019-08-14|
    引用文献:
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    WO2010034082A1|2008-09-29|2010-04-01|In Motion Technologies Pty Ltd|Winding insulation arrangement for axial flux machines|
    WO2017178008A1|2016-04-16|2017-10-19|Hanning Elektro-Werke Gmbh & Co. Kg|Motor for a cooking device|
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    JP4726564B2|2005-07-20|2011-07-20|ヤマハ発動機株式会社|Rotating electric machine and electric wheelchair|
    WO2008027535A2|2006-09-01|2008-03-06|Sears David B|Insulator for stator assembly of brushless dc motor|
    DE102010004887A1|2010-01-18|2011-07-21|Tyco Electronics Belgium Ec Bvba|Spool for mounting on a magnetic core, magnetic core for reluctance resolver and method of manufacture|
    WO2012014969A1|2010-07-30|2012-02-02|三洋電機株式会社|Molded motor and mobile body mounted therewith|
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    DE102016203140A1|2016-02-26|2017-08-31|Robert Bosch Gmbh|Stator arrangement for axial flow machine|CA3032539A1|2015-11-20|2017-05-26|Kelso Energy Ltd.|Recessed-magnet flywheel construction for vertical axis wind turbines|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50128/2018A|AT520876B1|2018-02-09|2018-02-09|Stator arrangement for an axial flow machine|ATA50128/2018A| AT520876B1|2018-02-09|2018-02-09|Stator arrangement for an axial flow machine|
    US16/223,433| US10886796B2|2018-02-09|2018-12-18|Stator arrangement for an axial-flow machine|
    CN201910045943.9A| CN110138108A|2018-02-09|2019-01-18|For the axial stator arrangement system for flowing machine|
    DE102019000666.6A| DE102019000666A1|2018-02-09|2019-01-31|Stator arrangement for an axial flow machine|
    BR102019002692-8A| BR102019002692A2|2018-02-09|2019-02-08|STATUS ARRANGEMENT FOR AXIAL FLOW MACHINE|
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