Novel magnetic suspension magnetic gear synchronous AC motor

Abstract

The utility model relates to the composite permanent magnet motor technology field, and discloses a novel magnetic suspension magnetic gear synchronous AC motor comprising a motor housing and an axial bearing, the axial bearing is hollow and passes through a stator, the periphery of the stator is provided with a connector, and the stator is connected with a first low magnetic steel layer through the connector; a pair of small magnets are evenly fixed outside the first low-magnetic steel layer in the circumferential direction, iron screws are evenly fixed to the peripheries of the small magnets in the circumferential direction, a sheath is arranged on the outer layer of each iron screw, gaps are reserved between the sheath and a pair of large magnets evenly distributed on the periphery in the circumferential direction, and the large magnets are fixed by a second low-magnetic steel layer on the outer side of the large magnets. A magnetic isolation layer is arranged on the outer layer of the second low magnetic steel layer, a layer of iron sheet is arranged on the outer layer of the magnetic isolation layer, a coil is arranged outside the iron sheet, the coil can be electrified and is fixed on a ceramic fixing frame, a wire is placed in the ceramic fixing frame, and the wire is connected with the coil. According to the utility model, the friction among motor parts is effectively reduced, the rotating speed of the motor is improved, the problems of excessive heat production and the like caused by overlong working time and friction are prevented, and the condition that the rotating speed of part of magnetic gear motors is too slow is also solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a novel magnetic suspension magnetic gear synchronous AC motor. Background Art

[0002] As the application of magnetic gear motor knowledge has become mainstream in industry, and ordinary motors rely on the friction of the mechanical shaft to drive the entire motor, so the heat generated is large, causing varying degrees of damage to mechanical parts, which will cause a certain degree of loss and danger; and because some magnetic gear structures are too ordinary, the motor speed is slow. Therefore, to solve the above problems and ensure the purpose, it is necessary to make changes in the motor structure, materials, working principles, and preventive measures. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a magnetic gear rotating motor that can maintain an air gap appropriately for a long time, effectively reduces the friction between motor parts and increases the speed of the motor, prevents problems such as excessive working time and excessive heat generation caused by friction, and also solves the problem of some magnetic gear motors rotating too slowly.

[0004] The specific plan is as follows:

[0005] It includes a motor housing and an axial bearing, which is hollow and passes through the stator. A connector is provided on the periphery of the stator and is connected to a first low-magnetic steel layer through the connector. A pair of small magnets are evenly fixed on the outside of the first low-magnetic steel layer in a circumferential direction. An iron screw is evenly fixed on the periphery of the small magnet in a circumferential direction. The outer layer of the iron screw is provided with a sheath, and a gap is left between the pair of large magnets evenly distributed on the periphery in the circumferential direction. The large magnet is fixed by a second low-magnetic steel layer on its outer side. The outer layer of the second low-magnetic steel layer is provided with a magnetic isolation layer. The outer layer of the magnetic isolation layer is provided with a layer of iron sheet. A coil is provided outside the iron sheet. The coil can be energized and fixed on a ceramic fixing frame. A wire is placed inside the ceramic fixing frame, and the wire connects the coil.

[0006] Preferably, a cooling layer is provided outside the ceramic fixing frame.

[0007] Preferably, a protective layer is provided outside the cooling layer.

[0008] Preferably, the protective layer is placed inside the motor housing.

[0009] The beneficial effects of the utility model are:

[0010] 1. It effectively increases the speed, thereby improving the working efficiency of the motor, and uses magnetic suspension to eliminate friction, greatly increasing the life of the motor.

[0011] 2. The knowledge related to magnetic gears is added, which indirectly improves the speed and control ability of the motor, further reduces the reactive power loss of the system, reduces the system volume, simplifies the structure of the motor, reduces the cost of the system, and further simplifies the corresponding control system, making it easier to implement the project. A magnetic isolation layer is added to avoid the influence of magnetic suspension on the acceleration device.

[0012] 3. The motor has a simple and compact structure and is highly integrated, which improves the space utilization of the motor. It has a high critical speed and is easy to achieve high-power and ultra-high-speed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure provided by an embodiment of the present invention.

[0014] Figure 2 It is a schematic diagram of the technical principle of magnetic gears.

[0015] List of reference numerals:

[0016] 1. Motor housing; 2. Protective layer; 3. Ceramic fixing frame; 4. Cooling layer; 5. Wire; 6. Coil; 7. Iron sheet; 8. Magnetic isolation layer; 9. Second low magnetic steel layer; 10. Large magnet; 11. Sheath; 12. Iron screw; 13. Small magnet; 14. First low magnetic steel layer; 15. Connector; 16. Stator; 17. Axial bearing; 18. The inherent magnetic field formed by the small magnet in the gap; 19. The inherent magnetic field formed by the large magnet in the gap. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0018] like Figure 1 As shown, the utility model improves a magnetic gear rotating motor capable of properly maintaining an air gap for a long time, including a motor housing 1 and an axial bearing 17, the axial bearing 17 passes through a stator 16, the stator 16 is connected to a first low magnetic steel layer 14 through a connector 15, and the small magnet 13 on the first low magnetic steel layer 14 and the large magnet 10 on the second low magnetic steel layer 9 have a strong effect under the action of an iron screw 12.

[0019] like Figure 2As shown, it is a schematic diagram of the working principle between 36 pairs of small magnets 13, 6 pairs of large magnets 10 and 42 iron screws, with small magnets 13 on the top, large magnets 10 on the bottom, and iron screws 12 in the middle. The iron screw in the middle is not only attracted by the small magnets on the top but also by the large magnets on the bottom. The magnetic fields on both sides magnetize the iron screw in the middle at the same time, resulting in a complex magnetic field force inside the iron screw. The direction and magnitude of the magnetic moment of each part in the iron screw are different. The magnetic field formed by the large magnet 10 in the gap is composed of 6 harmonics of wavelengths, and the magnetic field formed by the small magnet 13 in the gap is composed of 36 harmonics of wavelengths. The magnetic field is adjusted by the magnetic moment inside the middle iron screw, forming a regulated magnetic field in the opposite space. The number of wavelengths of the regulated magnetic field is equal to the number of iron screws 12 minus the number of wavelengths of the inherent magnetic field 19 of the large magnet 10, that is, there are 36 harmonics of wavelengths, and the inherent magnetic field 18 of the small magnet 13 is also the same 36 harmonics of wavelengths. When the phase difference between the regulating magnetic field and the inherent magnetic field 18 of the small magnet 13 is 180°, the opposite poles attract and remain stable. Driving the large magnet 10 to move right by one wavelength will cause the regulating magnetic field of the small magnet 13 to move left by one wavelength, pushing the inherent magnetic field 19 of the large magnet 10 to move synchronously. The speed ratio of the small magnet and the large magnet is the inverse ratio of the magnet logarithm, that is, 1 / 6. Therefore, the small magnet rotates one circle, and the large magnet rotates 6 circles. According to this magnetic gear principle, the acceleration of the large magnet 10 is achieved.

[0020] Since the wire 5 passes synchronous alternating current, the 8 coils 6 generate a magnetic field that attracts the iron sheet 7, and the attractive force is evenly distributed, so that the middle acceleration device is suspended in the middle, so that when the acceleration device works, it will not contact with the outer wall ceramic fixing frame 3 to cause friction and damage the parts. Because of the magnetic isolation layer 8, the magnetic field generated by the coil 6 is effectively prevented from affecting the internal acceleration device, so that the device can work normally. The cooling layer 4 is to prevent the current passing through the coil 6 from being too large and causing the temperature to be too high. The protective layer 2 is to prevent the motor from being damaged by some external factors. The outermost part of the motor is the motor housing 1, which can form a new type of practical high-speed magnetic suspension magnetic gear synchronous AC motor.

[0021] Such a structure not only achieves motor acceleration, but also applies magnetic levitation, which promotes the application of relevant scientific knowledge, makes the motor device structure more perfect, increases its service life, and meets the requirements of industrial production.

[0022] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A new type of magnetic suspension magnetic gear synchronous AC motor, characterized in that: The invention comprises a motor housing (1) and an axial bearing (17), wherein the axial bearing (17) is hollow and passes through a stator (16), wherein a connector (15) is provided on the periphery of the stator (16) and is connected to a first low-magnetic steel layer (14) via the connector (15), wherein 36 pairs of small magnets (13) are evenly fixed on the outside of the first low-magnetic steel layer (14) in a circumferential direction, wherein 42 iron screws (12) are evenly fixed on the periphery of the small magnets (13) in a circumferential direction, wherein the outer layer of the iron screws (12) is provided with a sheath (11), and There is a gap between the six pairs of large magnets (10) uniformly distributed along the circumferential direction on the periphery, and the large magnets (10) are fixed by a second low-magnetic steel layer (9) on the outside thereof, and the outer layer of the second low-magnetic steel layer (9) is provided with a magnetic isolation layer (8), and the outer layer of the magnetic isolation layer (8) is provided with a layer of iron sheet (7), and a coil (6) is provided outside the iron sheet (7), and the coil (6) can be energized and fixed on a ceramic fixing frame (3), and a wire (5) is placed inside the ceramic fixing frame (3), and the wire (5) is connected to the coil (6).

2. According to claim 1, a novel magnetic suspension magnetic gear synchronous AC motor is characterized in that: The ceramic fixing frame (3) is provided with a cooling layer (4) outside.

3. A novel magnetic suspension magnetic gear synchronous AC motor according to claim 2, characterized in that: The cooling layer (4) is provided with a protective layer (2) outside.

4. According to claim 3, the novel magnetic suspension magnetic gear synchronous AC motor is characterized in that: The protective layer (2) is placed inside the motor housing (1).

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