RU204090U1 - Sturov electric machine with external and internal stators, rotation of rotors coaxial with the stators in opposite directions - Google Patents

Abstract

The utility model can be used to create new power generating devices. The use of an additional internal magnetic stator with reverse polarity relative to the external stator significantly reduces the distance between the oppositely polarized magnets, enhances the effect of the magnetic field created by the stators on the rotor windings. The use of gearboxes providing rotation of the rotors in opposite directions with the same linear speed relative to the stators will expand the scope of the utility model. 2 ill.

Description

The utility model relates to the field of electrical engineering, to electromechanical devices with several rotors, which are coaxial and have an electromechanical connection.

Known device (patent RU 2437196) having coaxial rotors that rotate in opposite directions. The rotors are not mechanically connected to each other.

Known device (patent RU 2645725 C2) with two coaxial rotors, which have an electromagnetic connection, but do not have a mechanical connection.

The disadvantages of these devices include the lack of mechanical connection between the rotors, which limits their use.

The purpose of developing a useful model is to increase the current induction in the conductors of the rotor windings, to match the rotation of the rotors in opposite directions, to reduce the dimensions of electrical machines and internal current losses in the machine to create a stator magnetic field.

In the proposed device, the coaxial rotors are driven in opposite directions; a magnetic stator is coaxially installed inside the rotors with a polarity opposite to the outer magnetic stator. Rotors, when rotating, intersect magnetic fields of greater intensity with a smaller distance between the poles of the inner and outer stators; also, when current passes by the rotor conductors, additional magnetic fluxes are created, they increase the influence of the main magnetic fluxes on the counter-rotating rotors.

FIG. 1 shows the relative position of stators and rotors, current directions and magnetic fluxes around the conductors of the rotor windings, FIG. 2 shows the design of the interposition of stators and rotors, driving the rotors in rotation in opposite directions.

The utility model has a housing 1, an external magnetic stator 2 is installed in it. The side wall 3 of the housing 1 is connected to the drive and matching gearbox 4, the side wall 5 of the housing 1 and the outer wall of the gearbox 4 are rigidly connected to the axis 6 of the inner stator 7. On the axis 6 with on the side of the side wall 5 of the housing 1, rotors 9, 10, 11, 12 are installed on bearings 8. Sealing against loss of lubrication of bearings 8 is performed by cuffs 13, bearings 8 are lubricated through a channel 14 made inside the axis 6. On the hollow shafts of the rotors 9, 10, 11, 12, gears 15, 16, 17, 18 are installed in the gearbox 4, which are driven by gears 19, 20, 21, 22, rigidly mounted on the drive shaft 23, the gears 16 and 18 are driven through intermediate gears 24 and 25. All shafts rotate on bearings 26, the seal against grease leakage from the gearbox 4 is made by cuffs 27. In the side wall 5 of the housing 1 and the side walls of the rotors 9, 10, 11, 12 there are windows 28 for servicing the collectors of the rotors 9, 10, 11, 12 and replacement of brushes. The brushes are connected to the external network through channels 29 made inside the axis 6 of the internal stator 7. The electric machine operates as follows.

In the generator mode, when power is transmitted from the external motor to the shaft 23 of the gearbox 4, the rotors 9, 10, 11, 12 are driven in opposite directions of rotation, the windings of the rotors cross the magnetic lines of force between the opposite poles of the outer stator 2 and the inner stator 7, reducing the distance between opposite poles, in comparison with using only the outer stator, according to the Coulomb's law increases the magnetic flux inversely proportional to the square of the distance between the stator poles, when the windings of the rotors 9, 10, 11, 12 cross the magnetic flux between the stator 2 and the stator 7, a current arises in the windings of the rotors 9 , 10, 11, 12, when the current flows, a magnetic field arises around the conductors of the windings, the magnetic field lines are mutually repulsed, for a positive use of this effect, the rotor brushes are shifted relative to each other in the direction of rotation of the rotors on which these brushes are installed.

The use of external and internal stators, several rotors rotating in opposite directions, displacement of the brushes relative to each other in the direction of rotation of the rotors on which these brushes are installed will reduce the required power of the mechanical drive while increasing the generated electricity by the machine-generator. When using an electric machine as an electric motor, the design features of the electric machine will increase the generated mechanical power while reducing the consumption of the required electricity.

Claims (1)

A multi-rotor magnetomechanical device having two or more coaxial rotors, and the rotors are mechanically connected to each other and rotate in opposite directions, characterized in that in the hollow inner rotor the inner magnetic stator is located motionlessly relative to the stator housing with the polarity opposite to the outer stator, the rotors have windings placed in the inner grooves of the rotors, the outer rotor has a lower number of revolutions in the opposite direction compared to the inner rotor relative to it, the ratio of the revolutions of the outer and inner rotors is inversely proportional to the average diameters of the windings in the grooves of the outer and inner rotors, the rotor brushes are displaced relative to each other in the direction of rotation of the rotors on which these brushes are installed.

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