Disk type rotor electric motor

Abstract

The invention relates to a disc type rotor machine which comprises a shell, a shaft, a rotor and a stator. The rotor comprises a magnetic current partition disk, a composite disk and a plurality of medium rotor disks arranged between the magnetic current partition disk and the composite disk; the magnetic current partition disk, the composite disk and the medium rotor disk are arranged orderly along the axial direction of the shaft; the stator comprises excitation components and a plurality of armature components, and the excitation components and the armature components are arranged orderly along the axial direction of the shaft. The excitation components are positioned at the inner side of one end of the shell and arranged at the upstream of the magnetic current partition disk along the axial direction of the shaft and keeps a preset clearance with the magnetic current partition disk; the armature components are distributed between the magnetic current partition disk and the medium rotor disk, between the medium rotor disk and the medium rotor disk, and between the medium rotor disk and the composite rotor disk, and keeps a preset clearance with the magnetic current partition disk or the medium rotor disk or the composite rotor disk which are at the two ends of the armature components along the axial direction of the shaft. The rotor machine of the invention can improve energy conversion efficiency, is applicable to the motor with comparatively great and frequent change of rotation speed and input rotation torque and / or to the application occasions of the motor with great and frequent load change, and is suitable for production in a large scale.

Description

technical field [0001] The invention relates to a motor, in particular to a motor with a disc-shaped rotor. Background technique [0002] Existing motors have a variety of mechanisms, such as: There is a non-contact synchronous motor with a housing, a stator with radial grooves for mounting armature coils, a disc-shaped rotor, an annular field coil and a fixed magnetic conductor , the armature coil is installed on the end face of the annular stator and placed in radially distributed grooves, while the annular excitation coil is fixed on the shell made of magnetically conductive soft steel. The main magnetic force flow of the motor is controlled by the excitation coil Produced, through the steel sleeve installed on the rotor, the magnetic pole column system with radial distribution in the sleeve, and the external magnetic pole column system connected together by the outer steel ring, that is, the disc rotor, to form Closed circuit, whether this mechanism is the sleeve on the...

AI Technical Summary

Problems solved by technology

[0002] Existing motors have a variety of mechanisms, such as: There is a non-contact synchronous motor with a housing, a stator with radial grooves for mounting armature coils, a disc-shaped rotor, an annular field coil and a fixed magnetic conductor , the armature coil is installed on the end face of the annular stator and placed in radially distributed grooves, while the annular excitation coil is fixed on the shell made of magnetically conductive soft steel. The main magnetic force flow of the motor is controlled by the excitation coil Produced, through the steel sleeve installed on the rotor, the magnetic pole column system with radial distribution in the sleeve, and the external magnetic pole column system connected together by the outer steel ring, that is, the disc rotor, to form Closed circuit, whether this mechanism is the sleeve on the rotor or the steel ring, in order to achieve the purpose of separating from the casing of the excitation coil, in addition to using the working air gap between the end face armature and the magnetic pole, it must also rely on supplementary Due to the axial radial shape of the main magnetic flow closed loop, the section of each magnetic pole column in the internal magnetic pole system must have sufficient magnetic current passing capacity to ensure that the magnetic flow is controlled by the combined steel sleeve on the rotor. Starting from the cylinder, it turns to the radiation part of the magnetic pole. To achieve sufficient flux passing capacity, the geometric specifications of the active part of the motor must be strictly limited within a certain range, otherwise, the magnetic induction in the steel shaft center area will greatly increase until it reaches The degree of saturation leads to a substantial increase in the scattering of the magnetic current, which greatly reduces the working efficiency of the motor; another example: a permanent disk surface motor disclosed in Chinese patent CN2850123, including a rotor, a stator and its windings, a permanent magnet, and a spindle. The rotor and the stator installed on the main shaft are in the shape of discs, and the discs are parallel. The two are arranged correspondingly, and there is an air gap between them. One is fixed on the machine base, and the other is installed on the main shaft as a rotating body. The stator winding coil is embedded in the The slots of the stator armature distributed in the circumferential direction of the stator disk correspond to the permanent magnets distributed in the circumferential direction of the rotor disk. The design requirements of the motor; another example: a compound permanent magnet motor disclosed in Chinese patent CN2731826, the torque can be output from the shell, including the rotor, permanent magnet steel, stator and windings, and also includes: three independent motors Drive units, two are axially symmetrical disk motor drive units, and one is a cylindrical motor drive unit; the rotors of the three motor drive units are composed of two axially symmetrical disk rotors and one in the middle It is composed of a cylindrical rotor and connected with each other into a cylindrical shell shape; the corresponding two axially symmetrical disk stators and a cylindrical motor stator are enclosed in the rotor shell together, and are closely connected to each other. The shaft runs through the cylindrical shell and is fixed with the motor frame; the permanent magnetic steel is respectively arranged on the inner surface of the disk rotor and the cylindrical rotor, corresponding to the stator armature, and there is an air gap between them. This structure is used to provide large torque , the structure is very complicated, and the efficiency is not high; another example: a slotless motor rotor disclosed in Chinese patent CN2660766, including a rotating shaft, a built-in pulley on the rotating shaft, and two pole plates, each pole plate includes radially uniformly arranged There are an even number of magnetic poles, the inner section of each magnetic pole is closely adjacent, and the outer end is an arc surface. Each magnetic pole is stacked and fixed together by multiple oriented silicon steel sheets. Each oriented silicon steel sheet is made according to the orientation direction. Each magnetic pole is wound with An excitation coil electrically connected with the excitation mechanism, the winding direction of the excitation coil on the adjacent magnetic pole is opposite. Although this mechanism is beneficial to improve efficiency, the structure is quite complicated; another example: a hybrid excitation for vehicles disclosed in Chinese patent CN1441537 Claw pole generators, including a stator composed of iron core and armature windings and a rotor composed of claw poles, claw pole disks, excitation coils and shafts, adjacent to and staggered on two relatively closed claw pole disks of the rotor A permanent magnet is inlaid between the two claw poles that fit in. This mechanism uses a permanent magnet, which is difficult to meet the design needs of a high-power motor; another example: a claw pole generator disclosed in Chinese patent CN1643765, including A ring-shaped permanent magnet; two stator yokes each having a plurality of claw-shaped pole pieces arranged alternately and in parallel in the circumferential direction and arranged opposite to the permanent magnet; an iron magnetically connected to the stator yoke a core yoke; and a coil provided around the core yoke, the stator yoke is formed by stacking a plurality of thin plates in the thickness direction, the thin plates have a disk-shaped portion and a plurality of Pole pieces extending axially at predetermined intervals, this mechanism also uses permanent magnets, which is difficult to meet the design needs of high-power motors

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