Winding type hysteresis damper with stator and rotor capable of isolating radial magnetic flux
Through the stator and rotor separation design and radial flux technology, the applicability of existing hysteresis dampers in compact and complex operating conditions is solved, and efficient use and equipment performance improvements in these occasions are achieved.
Patent Information
- Application Number
- CN202510188682.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-06-17
AI Technical Summary
The integral structure of existing hysteresis dampers results in the inability to separate the stator rotor, and its applicability is limited, especially in the use of compact axial space and complex operating conditions.
It adopts a stator and rotor separation design, and mechanical isolation is achieved through an isolation device made of non-magnetic materials. It adopts a radial magnetic flux and a winding structure, which is suitable for use in compact axial space.
It reduces the axial size and expands the product usage environment. It can be used under complex working conditions such as high temperature, low temperature, humidity and heat, salt spray, acid gas, corrosion, mold, etc., improving the safety, reliability and service life of the equipment.
Smart Images
Figure CN120159877A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of hysteresis dampers, and more particularly to a stator-rotor separable radial flux wound hysteresis damper. Background Art
[0002] At present, most of the hysteresis dampers on the market are of an integral structure, which consists of an inner stator, an outer stator, and a hysteresis rotor. The stator and rotor cannot be separated, and an axial flux design is adopted. The air gap between the stator and the rotor is relatively small, and the axial dimension is relatively large, so it cannot be used in some applications where the axial space is compact. The integral structure causes the product to be used separately, and the stator coil cannot be used in complex working conditions such as high temperature, low temperature, damp heat, salt spray, acid gas, corrosion, and mildew. Summary of the Invention
[0003] In order to solve the above problems, the present invention provides a stator-rotor separable radial flux wound hysteresis damper with a separable stator and rotor design, mechanical isolation between the stator and the rotor, no rotating mechanism, radial flux, small thickness of the stator and rotor, and applicable to applications with compact axial space.
[0004] A stator-rotor separable radial flux wound hysteresis damper of the present invention includes a rotor and a stator. A coil winding is wound on the stator. The stator is an annular stator. The rotor is arranged in the inner region of the stator. A hysteresis ring is fixedly sleeved outside the rotor. An isolation device made of a non-magnetic conductive material is arranged between the hysteresis ring and the stator, and the isolation device is fixedly connected to the stator; a gap is arranged between the hysteresis ring and the isolation device.
[0005] Preferably, the isolation device is an annular isolation cover. A plurality of pairs of stator teeth for winding the coil winding are evenly distributed on the inner ring surface of the stator. The outer ring surface of the isolation cover is fixedly connected to the end of the stator tooth away from the stator.
[0006] Preferably, the coil winding is wound on the stator teeth in a way of equal turns and reverse winding for each tooth.
[0007] Preferably, 16 stator teeth are provided to generate an 8-pole magnetic field.
[0008] Preferably, the rotor is an integral structure made of a magnetic conductive material.
[0009] Preferably, the hysteresis ring is made of a deformable permanent magnet alloy.
[0010] Preferably, the hysteresis ring is connected to the rotor by one of the fixing methods such as hot fitting, threading, gluing or welding.
[0011] Preferably, the stator is an integral structure made of a magnetic conductive material.
[0012] Compared with the past hysteresis dampers, the present invention adopts a separated stator and rotor structure, avoiding the rotating mechanism, reducing the axial dimension, adopting a clearance design, and adding an isolation device between the stator and the rotor according to requirements, broadening the product's usage environment, providing damping force in special occasions, and meeting the requirements of occasions such as automatic control and operating feel. The present invention adopts the technology of separable stator and rotor and radial magnetic flux. The hysteresis damper can be used in occasions with a compact axial space. By using the isolation device, the rotor follows the actuator to work, and the stator coil is mechanically isolated from the actuator's working environment. The hysteresis damper can be used in complex working conditions such as high temperature, low temperature, damp heat, salt spray, acidic gas, corrosion, and mildew. The present invention broadens the usage occasions of the hysteresis damper and can be applied to special industries such as power generation, chemical industry, and aerospace, providing starting damping, stopping damping, and working damping for the rotating mechanism, smoothing the motion characteristics, and improving the safety, reliability, and service life of the equipment. Brief Description of the Drawings
[0013] Figure 1 It is an explosion schematic diagram of the present invention.
[0014] Figure 2 It is a schematic diagram of the axial cross-section of the present invention.
[0015] Figure 3 It is a schematic diagram of the stator winding.
[0016] Reference Numerals: 1 - stator; 2 - coil winding; 3 - isolation cover; 4 - hysteresis ring; 5 - rotor. Detailed Description of the Invention
[0017] A separable stator and rotor radial magnetic flux wound hysteresis damper of the present invention includes a rotor and a stator. A coil winding is wound on the stator. The stator is an annular stator. The rotor is arranged in the inner area of the stator. A hysteresis ring is fixedly sleeved outside the rotor. An isolation device made of non-magnetic conductive material is arranged between the hysteresis ring and the stator. The isolation device is fixedly connected to the stator; a gap is arranged between the hysteresis ring and the isolation device.
[0018] In one embodiment, the isolation device is an annular isolation cover. A plurality of pairs of stator teeth for winding the coil winding are evenly distributed on the inner ring surface of the stator. The outer ring surface of the isolation cover is fixedly connected to the end of the stator teeth away from the stator; in specific use, the isolation cover is a part of the equipment shell, and the extended part isolates the working environment and the external environment. The inside of the isolation cover is the rotating part, and the outside of the isolation cover is the stationary part. The outer ring surface of the isolation cover and the inner ring surface of the stator teeth can be in clearance fit. The extended part of the isolation cover can be used as the fixed constraint base of the stator. A gap is arranged between the inner ring surface of the isolation cover and the hysteresis ring to avoid mechanical interference of the hysteresis ring rotation.
[0019] In one embodiment, the coil winding is wound around the stator teeth in a manner of equal turns per tooth with forward and reverse winding.
[0020] The stator teeth are set to 16, generating an 8-pole magnetic field.
[0021] The rotor is an integral structure made of a magnetic conductive material.
[0022] In one embodiment, the hysteresis ring is made of a deformable permanent magnet alloy.
[0023] The hysteresis ring is connected to the rotor by one of the fixing methods such as hot fitting, threading, gluing or welding.
[0024] The stator is an integral structure made of a magnetic conductive material. Embodiment
[0025] The coil winding is wound around the stator teeth, with equal turns per tooth and forward and reverse winding, and direct current is passed through to generate a multi-pole magnetic field; The isolation cover is connected to the external device to isolate the stator and the rotor, and the stator and the rotor can work in different working environments; The hysteresis ring and the rotor are fixedly connected to form an integral structure, which is installed on the rotating shaft of the external device, and can provide a constant damping force to the external device after rotation.
[0026] There is an isolation cover between the stator and the rotor. The isolation cover is made of a non-magnetic conductive material. The rotor can work in a complex environment, and the stator can work in a better environment.
[0027] The stator is made into an integral structure using a magnetic conductive material; such as electromagnetic pure iron, low-carbon steel, iron-nickel alloy, without the need for lamination, avoiding the past silicon steel sheet lamination process.
[0028] The number of stator teeth is 16, generating an 8-pole magnetic field. The number of teeth can be designed to be 2n, where n is a positive integer, to form 2n pairs of magnetic poles according to the torque size and space design requirements. n where n is a positive integer, forming 2n n-1 pairs of magnetic poles.
[0029] The coil winding is in the form of a concentrated winding and adopts the equal-turn per tooth forward and reverse winding method.
[0030] The hysteresis ring uses a deformable permanent magnet alloy, such as 2J85, without the need for magnetization treatment. The fastening method between the hysteresis ring and the rotor can be selected from various forms such as hot fitting, threading, gluing, welding, etc.
[0031] The rotor uses a magnetic conductive material such as electromagnetic pure iron, low-carbon steel, iron-nickel alloy to form a magnetic circuit, forms an integral structure with the hysteresis ring, increases the strength of the hysteresis ring, forms a hollow shaft structure, and cooperates with the rotating shaft of the external device.
[0032] When the present invention is in use, a direct current of DC24V is passed through the coil winding to generate a constant spatial magnetic field. The hysteresis loop rotates with an external device. Due to the hysteresis effect, the hysteresis loop generates a damping torque in the opposite direction of rotation. The magnitude of the torque does not change with the rotation speed, and the magnitude of the torque is approximately proportional to the current passed through the coil winding. The magnitude of the damping torque can be adjusted by adjusting the current magnitude through an external controller.
Claims
1. A stator-rotor isolated radial flux winding hysteresis damper, comprising a rotor and a stator, wherein a coil winding is wound on the stator, characterized in that: The stator is an annular stator, the rotor is arranged in the inner area of the stator, a hysteresis ring is fixedly sleeved on the outside of the rotor, an isolation device made of non-magnetic material is arranged between the hysteresis ring and the stator, and the isolation device is fixedly connected to the stator; a gap is arranged between the hysteresis ring and the isolation device.
2. A stator-rotor isolated radial flux winding hysteresis damper as claimed in claim 1, characterized in that: The isolating device is an annular isolating cover, and a plurality of pairs of stator teeth for winding coil windings are evenly distributed on the inner annular surface of the stator. The outer annular surface of the isolating cover is fixedly connected to the end of the stator teeth away from one end of the stator.
3. A stator-rotor isolable radial flux winding hysteresis damper as claimed in claim 2, characterized in that: The coil winding is wound on the stator teeth in a tooth-by-tooth equal-turn forward and reverse winding manner.
4. A stator-rotor isolable radial flux winding hysteresis damper as claimed in claim 2, characterized in that: The number of stator teeth is 16, generating 8 pairs of poles of magnetic field.
5. A stator-rotor isolable radial flux winding hysteresis damper as claimed in claim 1, characterized in that: The rotor is an integral structure made of magnetic conductive material.
6. A stator-rotor isolable radial flux winding hysteresis damper as claimed in claim 1, characterized in that: The hysteresis ring is made of deformable permanent magnetic alloy.
7. A stator-rotor isolable radial flux winding hysteresis damper as claimed in claim 1, characterized in that: The hysteresis ring is connected to the rotor by a fixing method including shrink fitting, thread, gluing or welding.
8. A stator-rotor isolable radial flux winding hysteresis damper as claimed in claim 1, characterized in that: The stator is an integral structure made of magnetic conductive material.