Magnetic axial device

Abstract

The invention relates to a magnetic axial device for use as a motor or generator for generating electrical energy. The magnetic axial device (1) comprises: at least one stator (3) mounted on the shaft (2) and having a magnetic component (7), at least a portion of which rests on a limited peripheral annular section of at least one of the disc-shaped end faces (5) of the at least one stator, the limited peripheral annular section being a desired area (6) of the disc-shaped end face (5) of the stator (3); at least one disc rotor (4) mounted on the shaft (2) and having a magnetic component (8) and capable of axial rotation and interacting with the stator (3), at least a portion of its magnetic component (8) being placed on a limited peripheral annular section, the limited peripheral annular section is a desired area (10) of a side face (9) of the disc rotor (4) facing the disc end face (5) of the stator (3) with the magnetic component (7). At the same time, the surfaces of the interacting magnetic components (7, 8) of the stator (3) and rotor (4) have a compatible volumetric shape.

Description

Technical Field

[0001] The present invention relates to electrical engineering, namely, a magnetic axial device, and can be used as an electric machine acting as a motor or a generator in industrial sectors related to systems and devices for generating electrical energy. Background Art

[0002] All magnetic axial devices with any number of stators and rotors, as well as their various types and combinations, which are part of an electric machine, have been designed and developed considering various structural parameters that must ensure their intended functions. At the same time, for any design of a device for generating electrical energy, its operating efficiency remains an important issue.

[0003] Devices that generate magnetic electrical energy under the influence of kinetic energy or operate as a magnetic drive motor under the influence of electrical energy are known in the prior art.

[0004] The prior art knows an electric machine with permanent magnets, which has: an annular stator in the grooves of which windings are placed; a rotor in the form of a ferromagnetic disk, on the surface of which magnets are placed on the stator side, where non-magnetic inserts are installed between these magnets and covered with a non-magnetic bandage, where the bandage is designed as a cup-shaped part with two concentric non-uniform walls, the magnets are installed between the two concentric non-uniform walls, and the two concentric non-uniform walls are interconnected by a bottom pointing to the stator (patent for invention No. UA 106842C2, publication date: October 10, 2014 [1]). According to the known device, the height of the smaller wall placed inside the cup-shaped part of the bandage is equal to the height of the magnet, while the bandage wall of the larger height surrounds both the disk and the magnet. At the same time, the disk is connected to the cup-shaped part by fastening elements through the inner wall.

[0005] The known design of the electric machine provides a rather reliable fixation of the magnets; however, due to structural defects that cause non-uniform distribution of the flow, it has low torque, low power, and low efficiency, which results in its low operating efficiency.

[0006] The closest prior art is a magnetic axial device that includes at least one stator with magnetic components mounted on a shaft and at least one disk-shaped rotor with magnetic components. The at least one disk-shaped rotor is capable of axial rotation and interacts with the indicated stator (European Patent Application EP 3 512 082 A1, publication date July 17, 2019 [2]). The known magnetic axial device is adapted to be used as an electric power generator when kinetic energy is applied, or as a magnetic drive motor when electric power is applied. It includes a first disk-shaped rotor with a number of magnetic poles and a second disk-shaped rotor with a number of magnetic poles. Both rotors are placed on the shaft, and the stator is mounted between the rotors and consists of at least two coils, each coil having a magnetic component in the form of a core made of magnetic material. At the same time, the magnetic poles in the two disk-shaped rotors are radially positioned with successively varying polarities, positive and negative. At least two cores have such a configuration that the ends are inclined towards the same side on both sides in the same direction relative to the shaft, thus determining a substantially rhombic body in the positive plane. In addition, the known magnetic axial device also includes an external element for driving the first disk-shaped rotor.

[0007] The known magnetic axial device allows for the generation of a larger magnetic field, which increases the power of the generated electric energy. However, like the above prior art, it has low torque, low power, and low efficiency, which results in low operating efficiency. Summary of the Invention

[0008] The reason for the present invention is the need for an efficient magnetic axial device with high torque, power, and efficiency.

[0009] The object of the present invention is to improve the magnetic axial device, which, due to the proposed embodiments of its elements and the connections between them, ensures an increase in torque, power, and efficiency, thereby improving its operating efficiency.

[0010] This is solved by the claimed magnetic axial device, which includes at least one stator mounted on a shaft and having magnetic components, and at least one disk-shaped rotor mounted on the shaft and having magnetic components and capable of axial rotation and interacting with the stator. The stator has two disk-shaped end faces, and at least a part of the magnetic components of the stator is placed on a limited peripheral annular section of at least one disk-shaped end face that interacts with the rotor in its disk-shaped end faces, and the limited peripheral annular section is the intended area of the disk-shaped end face of the stator;

[0011] At least a part of the magnetic components of the disk-shaped rotor is placed in a limited peripheral annular section on at least one side of the disk-shaped rotor facing the disk-shaped end face of the stator having magnetic components, and the limited peripheral annular section is the intended area of the side of the disk-shaped rotor; at the same time

[0012] The surfaces of the magnetic components in the expected regions of the disc-shaped end faces of the stator and the surfaces of the magnetic components in the expected regions of the disc-shaped rotor that interact with them have compatible volumetric shapes, or the surfaces of the magnetic components in the expected regions of the two disc-shaped end faces of the stator and the surfaces of the magnetic components in the expected regions of the corresponding disc-shaped rotor that interact with them have compatible volumetric shapes, which increases the interaction area of the magnetic components within the finite section.

[0013] In the claimed magnetic axial device, the distance from the center of the axis of the shaft to the near boundary of the expected region of the disc-shaped end face of the stator is 0.65 to 0.75 times the planar radius of this disc-shaped end face of the stator, while the distance from the center of the axis of the shaft to the near boundary of the expected region of this side of the disc-shaped rotor that interacts with the stator is 0.65 to 0.75 times the planar radius of this side of the disc-shaped rotor.

[0014] In the claimed magnetic axial device, the surface area of the expected region of the disc-shaped end face of the stator is at least 1.25 times the area of the finite peripheral annular section in the plane of the corresponding disc-shaped end face of the stator. The surface area of the expected region of the disc-shaped end face of the stator includes the sum of the surface areas of the magnetic components in the expected region of the disc-shaped end face of the stator and the stator section, and the surface area of the expected region of the disc-shaped rotor that interacts with the stator is 1.25 times the area of the finite peripheral annular section in the plane of this disc-shaped rotor. The surface area of the expected region of the disc-shaped rotor includes the sum of the surface areas of the magnetic components in the expected region of the disc-shaped rotor and the disc-shaped rotor section.

[0015] According to the best embodiment of the present invention, the magnetic axial device includes a first disc-shaped rotor mounted on the shaft and having magnetic components, a second disc-shaped rotor mounted on the shaft and having magnetic components, and a stator mounted between the rotors and having magnetic components. At the same time:

[0016] At least a part of the magnetic components of the stator is placed on the finite peripheral annular sections of one disc-shaped end face of the stator and the finite peripheral annular sections of the second disc-shaped end face of the stator, and these finite peripheral annular sections are the expected regions of the first disc-shaped end face of the stator and the second disc-shaped end face of the stator respectively;

[0017] At least a part of the magnetic components of the first disc-shaped rotor is placed on the finite peripheral annular section on the side of this disc-shaped rotor facing the first disc-shaped end face of the stator, and this finite peripheral annular section is the expected region of the first disc-shaped rotor; and

[0018] At least a part of the magnetic components of the second disc-shaped rotor is placed on the finite peripheral annular section on the side of this disc-shaped rotor facing the second disc-shaped end face of the stator, and this finite peripheral annular section is the expected region of the second disc-shaped rotor;

[0019] Also, the surfaces of the magnetic components in the expected regions of the first disc-shaped end face of the stator and the surfaces of the magnetic components in the expected regions of the first disc-shaped rotor that interact with them have compatible volumetric shapes, and the surfaces of the magnetic components in the expected regions of the second disc-shaped end face of the stator and the surfaces of the magnetic components in the expected regions of the second disc-shaped rotor that interact with them have compatible volumetric shapes.

[0020] According to the specified embodiment, the distance from the center of the axis of the shaft to the near boundary of the expected region of the first disc-shaped end face of the stator and the distance from the center of the axis of the shaft to the near boundary of the expected region of the second disc-shaped end face of the stator are 0.65 to 0.75 times the radius in the plane of the corresponding disc-shaped end face of the stator;

[0021] The distance from the center of the axis of the shaft to the near boundary of the expected region of the first disc-shaped rotor and the distance from the center of the axis of the shaft to the near boundary of the expected region of the second disc-shaped rotor are 0.65 to 0.75 times the radius in the plane of the corresponding rotor;

[0022] The surface area of the expected region of the first disc-shaped end face of the stator — which includes the sum of the magnetic components in the expected region of the first disc-shaped end face of the stator and the surface area of the stator segment, and the surface area of the expected region of the second disc-shaped end face of the stator — which includes the sum of the magnetic components in the expected region of the second disc-shaped end face of the stator and the surface area of the stator segment, is at least 1.25 times the area of the finite peripheral annular segment in the plane of the corresponding disc-shaped end face of the stator;

[0023] The surface area of the expected region of the first disc-shaped rotor — which includes the sum of the magnetic components in the expected region of the first disc-shaped rotor and the surface area of the first disc-shaped rotor segment, and the surface area of the expected region of the second disc-shaped rotor — which includes the sum of the magnetic components in the expected region of the second disc-shaped rotor and the surface area of the second disc-shaped rotor segment, is at least 1.25 times the area of the finite peripheral annular segment in the plane of the corresponding disc-shaped rotor.

[0024] Permanent magnets and / or electromagnets, and / or coreless electromagnets, and / or coils are used as the magnetic components of the disc-shaped end face or the plurality of disc-shaped end faces of the stator and as the magnetic components of the disc-shaped rotor or the plurality of disc-shaped rotors.

[0025] The above-described magnetic axial device is an electric motor or a generator.

[0026] Through experiments, the inventors have discovered the unfavorable and expected areas for placing interacting magnetic components on the disc-shaped end face of the stator and the disc-shaped rotor, which enables the exclusion of the unfavorable areas of the magnetic axial device when placing the magnetic components; in addition, the inventors have discovered the necessary shape, i.e., its volume, of the surface of the interacting magnetic components to increase the interaction area of the magnetic components within a limited space, which jointly affects the design of the magnetic axial device and provides an opportunity to improve its effectiveness due to the increased torque, power, and efficiency as well as the expanded combination of implementation schemes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The novel features of the present invention are specified in detail in the claims. However, the following drawings show some embodiments of the present invention for the purpose of more fully explaining the present invention rather than limiting the scope of the present invention.

[0028] The present invention is illustrated by the following drawings but is not limited thereto:

[0029] Figure 1 is a schematic diagram of a magnetic axial device having one rotor;

[0030] Figure 2 is a schematic diagram of a magnetic axial device having two rotors;

[0031] Figure 3 is Figure 1 the expected area of the disc-shaped end face of the stator of the magnetic axial device shown;

[0032] Figure 4 is Figure 3 the disc-shaped end face of the stator of the magnetic axial device shown having magnetic components;

[0033] Figure 5 is Figure 1 the expected area of the disc-shaped rotor of the magnetic axial device shown;

[0034] Figure 6 is Figure 5 the side of the disc-shaped rotor of the magnetic axial device shown having magnetic components;

[0035] Figure 7 is Figure 2 the expected area of the first disc-shaped end face of the stator of the magnetic axial device shown;

[0036] Figure 8 is Figure 7 the first disc-shaped end face of the stator of the magnetic axial device shown having magnetic components;

[0037] Figure 9 is Figure 2 the expected area of the second disc-shaped end face of the stator of the magnetic axial device shown;

[0038] Figure 10 is Figure 9 the second disk-shaped end face with magnetic components of the stator of the magnetic axial device shown;

[0039] Figure 11 is Figure 2 the expected area of the first disk-shaped rotor of the magnetic axial device shown;

[0040] Figure 12 is Figure 11 the side of the first disk-shaped rotor of the magnetic axial device shown with magnetic components;

[0041] Figure 13 is Figure 2 the expected area of the second disk-shaped rotor of the magnetic axial device shown;

[0042] Figure 14 is Figure 11 the side of the second disk-shaped rotor of the magnetic axial device shown with magnetic components;

[0043] Figure 15 is a fragment of the surface of the magnetic component with a "triangle" relief;

[0044] Figure 16 is a fragment of the surface of the magnetic component with a "gill-like" relief.

[0045] To explain the essence of the present invention, abbreviations are used, which mean the following within the scope of this specification:

[0046] S-PZ is the expected area of the disk-shaped end face of the stator;

[0047] S-PZ1 is the expected area of the first disk-shaped end face of the stator;

[0048] S-PZ2 is the expected area of the second disk-shaped end face of the stator;

[0049] R-PZ is the expected area of the side of the disk-shaped rotor;

[0050] R-PZ1 is the expected area of the side of the first disk-shaped rotor;

[0051] R-PZ2 is the expected area of the side of the second disk-shaped rotor;

[0052] l S is the distance from the center of the axis of the shaft to the near boundary of the expected area of the disk-shaped end face of the stator;

[0053] l S1 is the distance from the center of the axis of the shaft to the near boundary of the expected area of the first disk-shaped end face of the stator;

[0054] lS2 is the distance from the center of the axis of the shaft to the near boundary of the expected area of the second disc-shaped end face of the stator;

[0055] l R is the distance from the center of the axis of the shaft to the near boundary of the expected area of the side face of the disc-shaped rotor;

[0056] l R1 is the distance from the center of the axis of the shaft to the near boundary of the expected area of the side face of the first disc-shaped rotor;

[0057] l R2 is the distance from the center of the axis of the shaft to the near boundary of the expected area of the side face of the second disc-shaped rotor;

[0058] r s is the radius of the disc-shaped end face of the stator;

[0059] r S1 is the radius of the first disc-shaped end face of the stator;

[0060] r S2 is the radius of the second disc-shaped end face of the stator;

[0061] r R is the radius of the side face of the disc-shaped rotor;

[0062] r R1 is the radius of the side face of the first disc-shaped rotor;

[0063] r R2 is the radius of the side face of the second disc-shaped rotor;

[0064] S S-PZ is the surface area of the expected area of the disc-shaped end face of the stator;

[0065] S S-LP is the area of the finite annular segment of the disc-shaped end face of the stator in the plane;

[0066] S R-PZ is the surface area of the expected area of the disc-shaped rotor;

[0067] S R-LP is the area of the finite annular segment of the disc-shaped rotor in the plane;

[0068] S SMC is the surface area of the magnetic component of the stator;

[0069] S RMC is the surface area of the magnetic component of the rotor;

[0070] S SAWM is the surface area of the stator segment without magnetic components in the expected area of the stator;

[0071] S RAWM is the surface area of the rotor section where there are no magnetic components in the expected area of the rotor. Detailed implementation

[0072] Specific embodiments are described schematically and in partial views. In some cases, details that are not necessary for understanding the present invention or details representing other details that are difficult to understand are not shown. Additionally, it should be noted that the present invention is not limited to the specific embodiments described.

[0073] The magnetic axial device ( Figure 1 , Figure 2 ) includes at least one disk-shaped stator mounted on a shaft and having magnetic components, and at least one disk-shaped rotor mounted on the shaft and having magnetic components and capable of rotating axially and interacting with the stator.

[0074] Figure 1 The magnetic axial device 1 is schematically shown, which includes a stator 3 mounted on a shaft 2 and having magnetic components, and a disk-shaped rotor 4 also mounted on the shaft 2 and having magnetic components and interacting with the stator. The stator 3 has two disk-shaped end faces, and on one of the disk-shaped end faces 5, at least a part of the magnetic components 7 of the stator 3 is placed on its limited peripheral annular section, and this limited peripheral annular section is the expected area 6 (S-PZ) of this disk-shaped end face 5 ( Figures 3 to 4 ). The distance l from the center of the axis of the shaft 2 to the near boundary of the expected area 6 in the plane of the disk-shaped end face 5 of the stator 3 S is 0.65 to 0.75 times the radius r S of this disk-shaped end face. At least a part of the magnetic components 8 of the disk-shaped rotor 4 is placed on one side 9 facing the disk-shaped end face 5 of the stator 3. At the same time, the magnetic components 8 are placed on the limited peripheral annular section of the side 9, and this limited peripheral annular section is the expected area 10 (R-PZ) of the side 9 of the disk-shaped rotor 4 ( Figure 1 , Figures 5 to 6 ). The distance l from the center of the axis of the shaft 2 in the plane of the disk-shaped rotor 4 to the near boundary of the expected area 10 of the side 9 interacting with the stator 3 R is 0.65 to 0.75 times the radius r R of this side 9 of the disk-shaped rotor 4. The surfaces of the magnetic components 7 in the expected area 6 of the disk-shaped end face 5 of the stator 3 and the surfaces of the magnetic components 8 in the expected area 10 of the disk-shaped rotor 4 interacting with them have compatible volume shapes.

[0075] The described design is one variation of the variations (an example of an embodiment of the present invention), namely, a single-rotor magnetic axial device.

[0076] Figure 2Schematically shown is a magnetic axial device 11, which includes a first disc-shaped rotor 13 mounted on a shaft 12 and having magnetic components, and a second disc-shaped rotor 14 also mounted on the shaft 12 and having magnetic components, while there is a stator 15 having magnetic components between the rotors. The stator 15 has a first disc-shaped end face 16 and a second disc-shaped end face 17. At the same time, at least a part of the magnetic components 18 of the stator 15 is placed on a limited peripheral annular section of the first disc-shaped end face 16, and this limited peripheral annular section is the intended area 20 (S-PZ1) of the first disc-shaped end face 16 of the stator 15; at least a part of the magnetic components 19 of the stator 15 is placed on a limited peripheral annular section of the second disc-shaped end face 17, and this limited peripheral annular section is the intended area 21 (S-PZ2) of the second disc-shaped end face 17 of the stator 15)( Figures 7 to 10 ). The distance l from the center of the axis of the shaft 12 to the near boundary of the intended area 20 in the plane of the first disc-shaped end face 16 of the stator 15 S1 is 0.65 to 0.75 times the radius r S1 of the first disc-shaped end face 16 of the stator 15( Figure 7 ). The distance l from the center of the axis of the shaft 12 to the near boundary of the intended area 21 in the plane of the second disc-shaped end face 17 of the stator 15 s2 is 0.65 to 0.75 times the radius r S2 of the second disc-shaped end face 17 of the stator 15( Figure 9 ).

[0077] At least a part of the magnetic components 24 of the first disc-shaped rotor 13 is placed on a limited peripheral annular section, and this limited peripheral annular section is the intended area 23 (R-PZ1) of its side face 22 facing the first disc-shaped end face 16 of the stator 15( Figure 2 、 Figure 11 ). At least a part of the magnetic components 27 of the second disc-shaped rotor 14 is placed on a limited peripheral annular section, and this limited peripheral annular section is the intended area 26 (R-PZ2) of its side face 25 facing the second disc-shaped end face 17 of the stator 15( Figure 2 、 Figure 13 ). The distance l from the center of the axis of the shaft 12 to the near boundary of the intended area 23 in the plane of the side face 22 of the first disc-shaped rotor 13 that interacts with the first disc-shaped end face 16 of the stator 15 R1 is 0.65 to 0.75 times the radius r R1 of the side face 22 of the first disc-shaped rotor 13( Figure 11 ); the distance l from the center of the axis of the shaft 12 to the near boundary of the intended area 26 in the plane of the side face 25 of the second disc-shaped rotor 14 that interacts with the first disc-shaped end face 17 of the stator 15 R2 is 0.65 to 0.75 times the radius r R20.65 to 0.75 times of ( Figure 13 ). The surfaces of the magnetic members 18 in the expected area 20 of the first disk-shaped end face 16 of the stator 15 and the surfaces of the magnetic members 24 in the expected area 23 of the first disk-shaped rotor 13 interacting therewith have compatible volume shapes. The surfaces of the magnetic members 19 in the expected area 21 of the second disk-shaped end face 17 of the stator 15 and the surfaces of the magnetic members 27 in the expected area 26 of the second disk-shaped rotor 14 interacting therewith have compatible volume shapes.

[0078] The described design is another embodiment of the present invention, namely a dual-rotor magnetic axial device.

[0079] In addition, the described embodiment can be a module of a multi-rotor and multi-stator magnetic axial device.

[0080] In the above embodiments of the claimed magnetic axial device, the three-dimensional shape of the magnetic members can have different reliefs, including "triangle" ( Figure 15 ), "gill" shape ( Figure 16 ), etc. The surface area (S S-PZ ) of the expected area of the disk-shaped end face of the stator - including the sum of the surface areas of the magnetic members on the disk-shaped end face of the stator (ΣS SMC ) and the sum of the surface areas of the sections without magnetic members in the expected area of the disk-shaped end face of the stator (ΣS SAWM ) - is not less than 1.25 times the area (S S-LP ) of the limited peripheral annular section in the plane of the corresponding disk-shaped end face of the stator, and the surface area (S R-PZ ) of the expected area of the disk-shaped rotor interacting with the stator - including the sum of the surface areas of the magnetic members of the disk-shaped rotor (ΣS RMC ) and the sum of the surface areas of the disk-shaped rotor sections without magnetic members in the expected area of the disk-shaped rotor (ΣS RAWM ) - is at least 1.25 times the area (S R-LP ) of the limited peripheral annular section in the plane of the disk-shaped rotor ( Figure 4 , Figure 6 , Figure 8 , Figure 10 , Figure 12 , Figure 14 ). That is:

[0081] S S-PZ = ∑S SMC + ∑S SAWM ≥ 1.25 × S S-LP (1);

[0082] S R-PZ = ES RMC + ES RAWM≥1.25×S R-LP (2).

[0083] Magnetic elements having magnetic poles are used as magnetic components for the disk-shaped end face of the stator or multiple disk-shaped end faces of the stator, and as magnetic components for the disk-shaped rotor or multiple disk-shaped rotors, namely: permanent magnets and / or electromagnets, and / or coreless electromagnets, and coils.

[0084] Industrial applicability

[0085] When power is applied, the magnetic axial device operates as a magnetic drive motor as described below.

[0086] A current pulse of appropriate polarity is applied to the stator 3 ( Figure 1 ), which ensures the repulsion or attraction of the magnetic component 7 placed in the expected area 6 of the stator 3 and the magnetic component 8 placed in the expected area 10 of the disk-shaped rotor 4. The excitation of the magnetic field of the required polarity generates the rotational movement of the disk-shaped rotor 4.

[0087] In the case of a dual-rotor magnetic axial device ( Figure 2 ), a current pulse of appropriate polarity is applied to the stator 15, which ensures the repulsion or attraction of the magnetic component 18 placed in the expected area 20 of the first disk-shaped end face 16 of the stator 15 and the magnetic component 24 placed in the expected area 23 of the first disk-shaped rotor 13, and the repulsion or attraction of the magnetic component 19 placed in the expected area 21 of the second disk-shaped end face 17 of the stator 15 and the magnetic component 27 placed in the expected area 26 of the second disk-shaped rotor 14. The excitation of the magnetic field of the required polarity generates the rotational movement of the disk-shaped rotors 13 and 14.

[0088] In the generator operation mode, the magnetic axial device operates as follows.

[0089] Due to external traction, the rotational movement of the disk-shaped rotor 4 ( Figure 1 ) generates a magnetic field that excites current in the stator 3 ( Figure 1 ), or the rotational movement of the first disk-shaped rotor 13 and the second disk-shaped rotor 14 ( Figure 2 ) generates a magnetic field that excites current in the stator 15 ( Figure 2 ) respectively.

[0090] The claimed magnetic axial device makes it possible to ensure high torque, high power, and high efficiency of the device, which is due to the placement of magnetic components in specific limited areas and the specific design of the surfaces of their interaction.

Claims

1. A magnetic axial device, comprising: At least one stator, said at least one stator being mounted on a shaft and having magnetic elements; And at least one disk-shaped rotor, said at least one disk-shaped rotor being mounted on a shaft and having magnetic elements and being axially rotatable and interacting with said stator, wherein: Said stator has two disk-shaped end faces, and at least a part of the magnetic components of said stator is placed on a limited peripheral annular section of at least one of the disk-shaped end faces that interacts with said rotor in said disk-shaped end faces of it, and said limited peripheral annular section is the intended area of this disk-shaped end face of the stator; At least a part of the magnetic components of said disk-shaped rotor is placed in a limited peripheral annular section on at least one side of said disk-shaped rotor facing said disk-shaped end face having magnetic components of said stator, and said limited peripheral annular section is the intended area of this side of the disk-shaped rotor; and The surfaces of the magnetic components in the intended areas of said disk-shaped end faces of said stator and the surfaces of the magnetic components in the intended areas of said disk-shaped rotor interacting with them have compatible volume shapes, or the surfaces of the magnetic components in the intended areas of the two disk-shaped end faces of said stator and the surfaces of the magnetic components in the intended areas of the corresponding disk-shaped rotor interacting with them have compatible volume shapes.

2. The device according to claim 1, wherein the distance from the center of the axis of said shaft to the near boundary of the intended area of said disk-shaped end face of said stator is 0.65 to 0.75 times the radius in the plane of this disk-shaped end face of the stator, and the distance from the center of said axis of the shaft to the near boundary of the intended area of said side of said disk-shaped rotor interacting with said stator is 0.65 to 0.75 times the plane radius of this side of the disk-shaped rotor.

3. The device according to claim 1, wherein the surface area of the intended area of said disk-shaped end face of said stator is at least 1.25 times the area of the limited peripheral annular section in the plane of the corresponding disk-shaped end face of the stator, the surface area of the intended area of said disk-shaped end face of the stator includes the sum of the surface areas of the magnetic components and stator segments in the intended area of said disk-shaped end face of the stator, and the surface area of the intended area of said disk-shaped rotor interacting with said stator is 1.25 times the area of the limited peripheral annular section in the plane of this disk-shaped rotor, and the surface area of the intended area of said disk-shaped rotor includes the sum of the surface areas of the magnetic components and disk-shaped rotor segments in the intended area of said disk-shaped rotor.

4. The device according to claim 1, wherein said device includes a first disk-shaped rotor mounted on a shaft and having magnetic components, a second disk-shaped rotor mounted on a shaft and having magnetic components, and a stator mounted between the rotors and having magnetic components, and At least a part of the magnetic components of the stator is placed on a limited peripheral annular section of one disc-shaped end face of the stator and on a limited peripheral annular section of the second disc-shaped end face of the stator, and the limited peripheral annular sections are the intended areas of the first disc-shaped end face of the stator and the intended areas of the second disc-shaped end face of the stator respectively; At least a part of the magnetic components of the first disc-shaped rotor is placed on a limited peripheral annular section on the side of the first disc-shaped rotor facing the first disc-shaped end face of the stator, and the limited peripheral annular section is the intended area of the first disc-shaped rotor; and At least a part of the magnetic components of the second disc-shaped rotor is placed on a limited peripheral annular section on the side of the second disc-shaped rotor facing the second disc-shaped end face of the stator, and the limited peripheral annular section is the intended area of the second disc-shaped rotor; and the surfaces of the magnetic components in the intended area of the first disc-shaped end face of the stator and the surfaces of the magnetic components in the intended area of the first disc-shaped rotor that interact with them have compatible volume shapes, and the surfaces of the magnetic components in the intended area of the second disc-shaped end face of the stator and the surfaces of the magnetic components in the intended area of the second disc-shaped rotor that interact with them have compatible volume shapes.

5. The device according to claim 4, wherein the distance from the center of the axis of the shaft to the near boundary of the intended area of the first disc-shaped end face of the stator and the distance from the center of the axis of the shaft to the near boundary of the intended area of the second disc-shaped end face of the stator are 0.65 to 0.75 times the planar radius of the corresponding disc-shaped end face of the stator; The distance from the center of the axis of the shaft to the near boundary of the intended area of the first disc-shaped rotor and the distance from the center of the axis of the shaft to the near boundary of the intended area of the second disc-shaped rotor are 0.65 to 0.75 times the planar radius of the corresponding rotor; The surface area of the intended area of the first disc-shaped end face of the stator - including the sum of the surface areas of the magnetic components and stator sections in the intended area of the first disc-shaped end face of the stator, and the surface area of the intended area of the second disc-shaped end face of the stator - including the sum of the surface areas of the magnetic components and stator sections in the intended area of the second disc-shaped end face of the stator, is at least 1.25 times the area of the limited peripheral annular section in the plane of the corresponding disc-shaped end face of the stator; The surface area of the intended area of the first disc-shaped rotor - including the sum of the surface areas of the magnetic components and first disc-shaped rotor sections in the intended area of the first disc-shaped rotor, and the surface area of the intended area of the second disc-shaped rotor - including the sum of the surface areas of the magnetic components and second disc-shaped rotor sections in the intended area of the second disc-shaped rotor, is at least 1.25 times the area of the limited peripheral annular section in the plane of the corresponding disc-shaped rotor.

6. The device according to any one of claims 1 to 5, wherein a permanent magnet and / or an electromagnet, and / or a coreless electromagnet, and / or a coil is used as a magnetic component of the disc-shaped end face of the stator or of a plurality of disc-shaped end faces of the stator and as a magnetic component of the disc-shaped rotor or of a plurality of disc-shaped rotors.

7. The device according to any one of claims 1 to 5, wherein the device is an electric motor or a generator.

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