Noncontact electric motor |
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IPC classes for russian patent Noncontact electric motor (RU 2424611):
 Hydrogenerator / 2418979
Hydrogenerator includes rotor 1, oil bath of centre plate, which has external and internal walls 3 and 6, support elements 4, cover 7 and condensers 8 of oil vapours and detachable ring filter 9, gravity filter 10 and water ejector 11, which are arranged on cover 7 and attached to each other and through condenser 8 to air cavity of oil bath, absorption cooling chambers with oil receiver, non-return valve 13 and tight valve 22. In oil bath there installed are flexible U-shaped pipelines 23 which are rigidly pressed by means of clamps to walls 3 and 6 of oil bath and to its bottom 2. Inlet edges of face of pipelines 23, which are adjacent to wall 6, are located in air cavity of oil bath restricted with rotor 1 and wall 6 and above level of oil filling the oil bath. Outlet edges of pipelines 23 which are adjacent to wall 3 are located in air cavity of oil bath restricted with rotor 1, wall 3 and cover 7 and above level of the oil filling the oil bath and inlet edges of pipelines 23 which are adjacent to wall 6.
 High-speed electric machine / 2385524
In proposed high-speed electric machine, comprising body equipped with end shields, stator core equipped with winding, in cylindrical cavity of which there is a rotor installed with gap, comprising inductor and bearing unit, according to invention, bearing unit is arranged with the possibility of gas dynamic support of rotor, for this purpose outer surface of rotor is shaped as a cylinder, besides it is located in cavity of cylindrical bush, preferably thin one, fixed against slipping in end shields, with a gap to its surface, open at the side of end shields, besides bush is made of insulation non-magnet antifriction material.
 Electric machine / 2385523
In proposed electric machine, comprising body arranged with the possibility to supply cooling gas into its cavity, equipped with end shields and facilities for supply of cooling gas to units arranged in body cavity, stator core equipped with winding, in cylindrical cavity of which there is a rotor installed with gap, comprising inductor and bearing unit, according to invention, bearing unit is arranged with the possibility of gas dynamic and gas static support of rotor, for this purpose outer surface of rotor is shaped as a cylinder, besides it is located in cylindrical cavity of bush fixed against slipping in end shields, between outer surface of bush and stator core cavity surface inverted to it there are longitudinal channels arranged, bush is installed with gap versus surface of rotor and is arranged of insulation non-magnet antifriction material, besides cavities of longitudinal channels are communicated with gap between bush and surface of rotor, at least via one circular row of through holes in bush wall.
 Electric machine with axial spring-controlled element / 2361348
Invention relates to electric engineering, and particularly, to electric machines and deals with their specific design being provided axial spring-controlled element. The said element is installed between rotor part on rotor shaft and antifriction bearing. Mainly, electric machine (10) is intended for bringing functional elements into operation in motor car. The said electric machine contains rotor with shaft (12) being installed in case-shaped part (16) so that it can rotate in antifriction bearing (22, 20). There is axial spring-controlled element (32) between antifriction bearing and rotor part, which is fixed to rotor shaft (12). The spring-controlled element is provided with inner (40) and outer (42) rings interconnected so that they can spring in axial direction. Outer ring (42) of axial spring-controlled element (32) is connected with rotor part (34).
 A ustyuzhin electrcal unit / 2335838
Electrical unit incorporates a stator, a rotor and rotor bearings with magnets arranged on the rotor and stator. In compliance with this invention, every bearing of rotor is furnished with magnetic equalising device representing a pair of magnets fastened on the stator and the rotor shaft end with the like poles opposed, or a magnet fitted on the rotor shaft with the one-type pole facing the rotor bearing magnet fitted on the stator.
 Method of reducing anti-torque resistance in starting at lower temperatures / 2327277
Invention relates to machine building and may be used in mining industry, metallurgy and processing industry. The proposed method allows facilitating starting a high-power motors in severe operating conditions, e.g. at lower temperatures. In compliance with this method, prior to starting the motor, a special AC magnet is connected to the motor shaft. The electromagnet windings carry an alternating current with different phases to create an alternating magnetic field acting on the motor shaft to make it vibrate. Also, because of the shaft solid design, induction currents get induced therein. The shaft vibration and induction currents in it make the grease start heating and penetrating into the gap between the thrust bearing and the shaft thus eliminating friction there between. This allows selecting a lower starting torque motor, hence a lower power one.
 Face electric machine / 2321136
The face electric machine includes circular magnetic conductors, stator with excitation winding, rotor shaft with short-circuited winding, bearing shield with roller bearings, springs and adjusting device. In accordance to the invention, one of springs is the main spring and is made with diameter which exceeds rotor shaft diameter, and is mounted on the rotor shaft between roller bearings to ensure possible free movement of shaft inside the main spring, while on one end the spring abuts against the body of one roller bearing, and by other end it abuts against the body of another roller bearing with possible movement of rotor shaft along its axis, and additional spring is installed between roller bearing and the rotor, while by one end it abuts against the body of a roller bearing, and by other end it abuts against the body of rotor.
 Submersible oil-filled motor of oil-well centrifugal pump with adjustable axial support / 2320897
Proposed submersible electric motor has axial support consisting of step secured on shaft and step bearing with upper, central and lower members, inner base member whose inner surface encloses at least pert of upper member of step bearing, and elastic ring enclosing side surface of upper member. Cavity is made on lower surface of upper member which accommodates upper part of central member. Cavity is made on upper surface of lower member which accommodates lower part of central member of step bearing. Upper member of step bearing rests on central member. Axial support is made for axial displacement with subsequent fixing in working position. Lower and upper members of step bearing are secured to prevent rotation relative to shaft axis. Projecting part of elastic ring is pressed to inner surface of inner base member. Central member is made and arranged to provide parallelism of working surfaces of step bearing and step at angular displacements of axis of electric motor shaft.
 Plain bearing of vertical-shaft water-wheel generator / 2283972
Proposed plain bearing for vertical-shaft water-wheel generators has segments mounted in its housing and shaft-mounted bushing. Bottom butt-end of bushing carries rectangular-section ring assembled of two or more parts with radial slots uniformly disposed over circumference at bushing butt-end. Slots and butt-end surface of bushing form radial holes designed to force lubricant to friction zone.
 Water-wheel generator top spider / 2275730
Top spider of water-wheel generator has central part assembled of top and bottom disks, cylinder, rib secured to disk and joined to legs by means of mating plates and fastening members wherein each bottom inner mating plate is provided with upper supporting tooth protruding toward each outer plate and resting on upper end of bottom plate of each leg.
 Electric motor of mining mill of direct drive system / 2417505
Electric motor has a circular segmented stator core, laminated from sheets of electric steel, in a stand, with three-phase winding laid into core slots, inside which there is a rotor installed in the form of the mill body, outside of which in grooves there are permanent magnets arranged from alloy Nd-Fe-B (neodymium - iron - boron), and between them there are electroconductive rods of short-circuited winding, and steel armoured boards laid in shock absorbers are fixed inside to the body with screws.
 Method for manufacturing of high-speed electric machine rotor / 2400907
Plates are cut of sheets made of non-magnetic material of austenite-martensite grade, which is able to change in process of cold deformation from non-magnet phase to magnet phase, and when further heated - back to non-magnet phase. Such material may be alloy on the basis of austenite-martensite corrosion-resistant steel. At first stock non-magnet sheets are exposed to at least 65% cold pressing, shaping material change over to magnetic phase with magnetic permeability µ>100 Gs/E. Afterwards, with the help of heating by laser radiation up to 1000 - 1200°C, reverse conversion of material phase is carried out in local sections, corresponding to location of non-magnet zones of rotor plates with magnetic permeability µ=1 Gs/E. Previously prior to heating, absorbing coating is applied onto sections of surfaces that correspond to arrangement of non-magnet zones, and the coating increases thermal effect at least 2.5 times. For reliable preservation of material magnet phase resistance it is optimal that its temperature is at least 500°C below temperature of converted local sections heating. After heating and further natural cooling on air, coating is removed, rotor plates are cut as per program and are fixed to each other in axial direction into packet, which is installed on rotor shaft. Heating with laser radiation is carried out by means of sheet surface scanning by focused or non-focused laser beam. Gradient material has high mechanical characteristics (yield point on both phases is at least 80 kG/mm2) while magnetic permeability of magnetic material is at least 100 Gs/E, and non-magnetic - 1 Gs/E.
 Self-tuning generator with permanent magnets / 2399143
AC generator comprises the following components: permanent magnet facility to create rotary magnetic field, anchor facility comprising at least two excitation winding adjacent to permanent magnetic field and arranged within the limits of rotary magnetic field, primary winding of anchor facility connected to load, and also secondary winding displaced relative to primary winding on anchor and connected to capacitance load.
 Rotor of high-speed electric machine (versions) / 2382472
Invention is related to the field of electric engineering and electric machine building and may be used in design of synchronous high-speed motors and generators. According to this invention, rotor comprises shaft (1) with alternating pole magnetic system attached on it, which is arranged in the form of identical solid circular plates tightened to each other in axial direction. In plates there are windows arranged, which are intended for placement of permanent magnets (2). According to the first version of realisation, permanent magnets are magnetised in tangential direction, and according to the second version - in radial one. In each of circular plates there are magnetic and nonmagnetic zones. According to the first version, one of nonmagnetic zones represents ring (3) that embraces shaft, and other circular fragments (4) arranged along external diametre of plate, which limit space of windows from outside. According to the second version, nonmagnetic zones are arranged between end surfaces of neighboring windows and between their geometric extensions that achieve external diametre of plate surface. Difference (by 10-20%) in dimensions of circular fragments arcs and widths of windows for placement of permanent magnets (according to the first version), and also heights of end surfaces of windows and their separating partitions (according to the second version) makes it possible to increase mechanical strength of structure in corners of windows, where maximum mechanical tensions occur from action of centrifugal forces. Solid plates are made of material, which may vary its magnetic properties, for instance, from magnetic austenite steel, which after special thermal or mechanical processing acquires properties of nonmagnetic material.
 Magnetic power rotary device / 2371828
Proposed device comprises rotor and stator. Rotor has several magnetic elements furnished with permanent magnets arranged around revolving shaft to form rotor wheel-like ring. Note here that every magnetic element has two magnetic poles. Stator has several magnetically isolated electromagnetic elements arranged around revolving shaft to form stator wheel-like ring about said shaft. Note that every electromagnet has twin poles. Stator wheel-like ring is partially enveloped by rotor wheel-like ring for every pole of stator correspond to one magnetic pole of rotor magnetic element two poles. There are two air gaps formed between rotor and stator. Note that two axial component air gaps and two radial component air gaps are arranged between one of twin poles of stator electromagnets and one respective magnetic pole of rotor magnetic elements.
 Multipole rotor of valve electric machine with permanent magnets (versions) / 2369953
Invention is related to the field of electric engineering and electric machine building and may be used in design and production of valve electric machines (motors and generators) of classic and inverted design for improvement of their power characteristics.
 Synchronous reaction motor / 2368993
Invention is related to electric engineering and may be used in power electric drive. Synchronous reaction motor comprises stator with multi-phase winding and rotor. Rotor is made of the ferromagnetic packets (2) installed along axis of motor, inter-packet gaps (4), which separate packets one from another, besides, at least in one gap by pole division between ferromagnetic packets, most closely located to longitudinal axis, there is a permanent magnet (5), besides, axis of permanent magnet magnetisation coincides with normal line to surfaces of ferromagnetic packets (3) adjacent to it.
 Permanent magnet motor / 2362259
Invention relates to electrical engineering, particularly to electrical machines and can be used as a motor in steering wheel boosters of automobiles and low and medium power electric generators. To achieve this outcome, the proposed permanent magnet motor consists of a cylindrical ferromagnetic external rotor, comprising a shaft, a nonmagnetic disc on the shaft and a magnetically conductive cylinder, on the inner surface of which permanent magnets are placed parallel the axis of the rotor. The said motor also has a cylindrical inner stator, placed in line with the rotor. According to this invention, in the magnetic system of the rotor, magnets on the length of each pole are divided into two parts and displaced from each other around the rotor by an angle Δα/2, where Δα=360°/n, where n is the pulse number of magnetic flux in one cycle of the rotor.
 Synchronous rotary electric machine / 2331150
Invention relates to electric engineering and describes design of synchronous electric machine, which may be used, for example in controlled electric drives and in stand-alone electric equipment as AC supply source. Technical result to be achieved by this invention is the increase of operating factor and decrease of tooth kinks in synchronous electric machine moment while simplifying design and manufacturer's technology. Subject of invention is that in synchronous rotary electric machine containing rotor with interchangeable polarity of poles and stator with Z evenly displaced teeth on which m-phase winding consisting of n coils in each phase is situated, according to invention, each of coils covers one tooth, but only one from two neighboring teeth is found to be covered by one of coils. Besides, each of coils repeats the shape of groove and occupies actually the whole volume of both grooves adjoining to the tooth, which is covered by the coil. At the same time, stator teeth are designed so that shape of their cross sections is trapezoidal and each groove is provided with two practically parallel sides so that cross sections of the grooves could be practically steady along the whole height, and groove width ratio bg to tooth division tz is within 0.3 - 0.35.
 Magnetic system of rotor / 2316103
Magnetic system of rotor comprises a stack of plates provided with V-shaped openings and made of magnetic circuit and permanent prismatic magnets with the tangential magnetization N-S. The magnets are set in the openings in the plate with an inclination to the radial axis and abut each other by their similar poles. The nonmagnetic inserts can underlie the magnets.
 Electromechanical converter with liquid cooling / 2422969
Invention relates to features of an electromechanical converter design with liquid cooling, which is mainly designed for slow-speed devices and may be used, for instance, as an electric motor in drum hoists or motor-wheels of light vehicles, as an electric generator in wind-driven power plants or as a starter generator in petroleum and diesel generator stations, electric vehicles with a combined power plant, as a synchronous compensator, a motor for elevators and in other devices, where high specific characteristics are required, or expanded functional capabilities. The electromechanical converter with liquid cooling of stator windings comprises at least one stator-rotor pair, in which a stator has a power frame arranged in the form of a flange of the fixed converter axis, along a circular perimetre of which there are teeth of material with high heat conductivity, between which there are stator windings arranged in cores with high magnetic permeability. At the same time according to this invention the specified stator teeth include holes for passage of cooling liquid, and the stator flange body contains discharge and drain headers of a cooling liquid, which communicate with the following holes.
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FIELD: electricity. SUBSTANCE: noncontact electric motor includes hollow cylindrical nonmagnetic slotless stator with winding, which is arranged between parts of composite rotor. Outer part of rotor is made in the form of ferromagnetic shell, and inner part is made in the form of cylindrical constant magnet fixed on shaft in bearings. The latter are arranged in support sleeves of stator ends, which can be made from heat-resistant dielectric material. EFFECT: improving positioning accuracy of rotor axis and improving reliability of proposed noncontact electric motor at simultaneous simplification of its design and manufacturing procedure, reduction of weight, dimensions and manufacturing costs. 2 cl, 1 dwg
The invention relates to the field of electrical engineering, namely to electric machines with contactless switching implemented using semiconductor elements, and can be used in high-speed DC motor for small actuators, for example in equipment, dental equipment, power tools with increased requirements for energy performance and dynamic characteristics during acceleration and braking. Known electric machine to generate a magnetic field, which is a separate unit consisting of a hollow cylinder with flanges at the ends, made of a nonmagnetic material, end-to-end in the radial direction grooves which on the outer side, koltseobrazno, with a certain step fixed cores made of magnetic material serving as a magnetic core in the space between the cores laid winding, preventing loss of the winding is ensured by clamping lugs, made of a nonmagnetic material, which are attached to the end flanges. A device for converting one form of energy into another consists of two rotors, one rotor is installed inside the device to create a magnetic field and communicates with its interior, the other mouth is R covers the outer part of the device to create a magnetic field and interacts with it (the description of the patent RU 2360352 IPC H02K 16/02 (2006.01) H02K 1/16 (2006.01) H02K 17/00 (2006.01). The presence of cores in a known design creates additional losses in steel, as well as higher harmonics of the magnetic field. All-metal case made of a nonmagnetic material, causes of power losses from eddy currents. All this reduces the efficiency of the machine. In addition, due to the large difference in coefficients of linear expansion of the housing material and the bearings will inevitably occur during Assembly and in operation invalid clearance or interference fit. When this occurs the offset of the axes of the bearings, the appearance of eccentricity between the rotating and stationary parts. There are additional mechanical losses in the bearings and power of unilateral magnetic attraction. Such phenomena lead to reduced service life of the machine and unacceptable for high-speed motors with increased weight and size requirements. Known contactless synchronous machine comprising a stator, which represents a non-ferromagnetic cylinder formed of copper windings becasovo design and filled with a special compound with high thermal conductivity. The stator is placed between the cylindrical surfaces of the inner and outer parts of the rotor, made of a ferromagnetic material, and containing permanent magnets facing the stator and ustanovlennye the outer part of the rotor. A rotor mounted on a shaft in bearings mounted in the motor housing with the ends (the description of the patent RU 2374743 H02K 21/12 (2006.01) H02K 21/22 (2006.01) H02K 16/02 (2006.01). In the known device basbasoloa execution stator eliminates the problem of power loss in the teeth and losses from higher harmonics of the magnetic field. Significant disadvantages of the known device is the complexity of the design of a composite rotor, the presence of the external body, which duplicates the function of the stator and an additional magnetic core; cantilever mounting of the stator winding, which requires for its gluing additional centering mandrel; placing the bearings of the shaft in a non-metallic bushings body, reducing the positioning accuracy during Assembly. All these factors complicate the manufacturing technology of the electric motor, overstate its dimensions and weight, complicating the operation. The objective of the invention is to simplify the design and manufacturing techniques, improved operational characteristics of the contactless synchronous motor with a stator and two rotors. The technical result of the invention is to improve the accuracy of positioning the axis of the rotor and reliability, reduced weight, size and cost of manufacture of the engine. The technical result is achieved by the fact that contactless electrodirt the Le, including a hollow cylindrical non-magnetic espesaly the stator winding, is placed between the parts of a composite rotor with a permanent magnet, of which the outer part is made in the form of ferromagnetic glass, mounted on a shaft in bearings, the latter is placed in the bearing bushings of the ends of the stator, and a cylindrical permanent magnet fixed on the shaft, forming the inner part of the rotor. While supporting sleeve can be made of heat-resistant dielectric material. Contactless synchronous motor is schematically represented in the drawing. The motor includes a hollow cylindrical non-magnetic stator 1 with a multiphase winding, wound on becasovo mandrel, placed coaxially between separate parts of the compound of the rotor - outer in the form of a ferromagnetic glass and internal in the form of a radially magnetized cylindrical permanent magnet 3. The stator winding 1 is placed in the gap between the inner surface of the ferromagnetic Cup 2 and the outer surface of the permanent magnet 3, which is fixed on the shaft 4 in the radial ball bearings 5, 6. The ends of the stator 1 and the radial ball bearings 5, 6 are installed respectively in the bearing sleeves 7, 8, made for example of heat-resistant dielectric material. The bearing 5 on the shaft 4 and the bearing wut the ka 7 is placed inside the ferromagnetic Cup 2. The sleeve 8 is made in the form of a bearing shield and to output the ends 9 of the winding connection is provided by holes (not shown). Fixation of the stator 1 in the bearing sleeves 7, 8 from opposite ends increases the rigidity of its structure, and placing them in shaft bearings 4 allows to exclude from design carrier Cabinet parts. The elimination of the lifting body reduces the size and weight of the machine, reduces the number of structural elements, eliminates the power losses from the braking torques generated fields scattering from the outer surface of the outer part of the rotor. When connecting the ends of the winding 9 to the Converter with semiconductor devices occurs rotating magnetic field. When the interaction of the magnetic field of the stator winding 1 with the field of the permanent magnet 3 occurs torque that causes the rotor to rotate. It is also possible motor in generator mode. 1. Contactless electric motor, comprising a hollow cylindrical non-magnetic espesaly the stator winding, is placed between the parts of a composite rotor with a permanent magnet, of which the outer part is made in the form of ferromagnetic glass, mounted on a shaft in bearings, characterized in that the latter is placed in the bearing bushings of the ends of the stator, and a permanent magnet fixed on the shaft is, forming the inner part of the rotor. 2. The electric motor according to claim 1, characterized in that the supporting sleeve made of heat-resistant dielectric material.
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