Permanent-magnet synchronous motor for drainage pump |
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IPC classes for russian patent Permanent-magnet synchronous motor for drainage pump (RU 2516377):
  
 Electric motor and electric tool equipped with this motor / 2392722
Invention relates to the field of electric engineering, in particular to electric motors intended for use for instance in electric tools and comprising anchor (rotor) with winding installed in slots and coated by shaped polymer. In proposed electric motor for efficient compensation of heat produced by anchor (2a) with shaped polymer, in particular for efficient compensation of heat produced by winding (2e), for each of slots (2g) on external peripheral surface of filling layer (9a) of shaped polymer, which fills slot (2g) of core (21) with wound winding (2e), there are open grooves (2j) provided. Shape used for moulding of filling layer (9a) of shaped polymer consists of four elements, which may be separated along four directions of shift (in radial direction of core).
 Device to protect the motor from overheating and moisture / 2033674
The invention relates to electrical engineering and can be used to protect against overheating and moisture motors, operating with significant breaks between inclusions in places with changing environmental parameters, in particular in the conditions of agricultural production
 The head end parts of the core of the stator winding / 2025865
The invention relates to electrical engineering, in particular to meistergram connections of the windings of AC machines
 Method for isolation of magnet core slots in motor armature / 2516266
In the method for insulation of slots of the magnet cores in micromotor stators based on charging of electroinsulating material particles with electric charge and their precipitation into slots under action of the electric field, the new development lies in placement of the armature magnet cores in the centre of an elastic cylindrical dielectric cup that covers hermetically the outer surface of the armature magnet core, installation of two electrodes at a distance of 20-30 mm from end walls of the armature magnet core, filling of the above cup with electrophoretic compound with the following ratio of components (in mg/l): varnish PE-939 of C mark - (510÷255), 1% - liquid ammonia 1% - NH4OH - (130÷190), ethyl cellosolve - C4H10O2 - (120÷175), diethylene oxide (C4H8O2) - the rest. Positive potential from the direct current source is supplied to the magnet core and negative potential from the above source is supplied to electrodes and at current density within the range of 2-10 mA/cm2, electrophoretic precipitation of the film former is made to the slots, to end surfaces and a shaft of the magnet core armature within the period of rime defined as per the formula
 Coil of submersible electric motor encapsulated into heat shrink tube / 2442880
The invention relates to submersible electric motors used in pumps. The electric motor comprises a frame, numerous stator laminations inside the frame, several rotors. Each stator lamination has a central window and several slots. The rotors are positioned inside the space formed by the central windows of stator laminations. The coil wires pass through each slot of each stator laminations. The heat shrink tube wraps the coil wires and tightens them into cords. Furthermore, the space between the heat shrink tube around the coil wires and the inner space of stator laminations allows the fluid flow through stator lamination slots. The heat shrink tube is installed into the stator lamination slots to improve the heat transfer in the electric motor. Numerous wires are inserted into the slots in stator laminations. The coil wires are heated, shrinking the heat shrink tube around the coil wires and tightening them into cords, in such a way so the gap between the heat shrink tube and inner surface of the stator laminations allows the fluid flow through wire cords inside the stator laminations.
 Stator of electric motor with outside rotor for drum-type washing machine / 2330908
Stator of electric motor with outside rotor for a drum-type washing machine contains a core ring of multilayer structure formed by steel plate folding. The stator has a ribbon-like base and the core ring teeth protruding from the base during spiralling of the steel plate starting from the lower layer to the upper layer as well as the upper and the lower insulators made of electric insulating material covering the upper and the lower sides of the spiral core ring and interadding its shape. Each upper and lower insulator contains three or more fixing details formed as the whole entity with the body and protruding from the inside of the core ring to the centre of the stator for stator fixation on the fixing side of the tub. The fixing detail has a fixing hole for fixation of the stator on the fixing side of the tub by the fixing detail. Each bulge of the upper and lower insulators contains the elevated part protruding from the side facing the other insulator in the opposite to the insulator direction for placing of insulators in full contact all together to improve insulator assembly.
 Stator of the motor with outer rotor and the method of its production / 2327269
Invention relates to electrical engineering and may by used in washing machines with a direct connection to the drum. The invention allows a lower consumption of materials and simplification of production process. The said motor features the stator design allowing its stable arrangement on the tank attachment side or on the bearing housing. To this effect, the stator incorporates a steel core produced by faggoting and coiling the steel plate. The stator has teeth and a basic element. The upper insulator is shaped as a spiral-like core and envelopes the upper part of the spiral core. The lower insulator has an identical form and envelopes the lower part of the spiral core in assembly with the upper insulator. The lower insulator is made from an insulating material. The connector is made from a steel plate forming a spiral core so as to prevent uncoiling the steel plate in direction opposite to that of the steel plate coiling in faggoting and coiling the steel plate and to prevent shifting of separate layers relative to each other in the steel plate package. There is cut is provided in the steel plate basic element to reduce strain in coiling the core.
 Pole rotor electric machines and apparatus for the manufacture of its winding / 2024158
The invention relates to electrical engineering, in particular to electrical machines
 Electrical machine / 2486652
Electric machine consists of outer case (2) containing bottom (2b) located in fact perpendicular to rotor rotation axis; stator (3) having at least one pole extension (5) and at least one circular winding (8) installed inside the pole extension (5) and rotor (2); at that the case (2) has at least one support area (11) for interaction with respective area (12) of the winding (8) supporting it for the purpose of heat exchange between winding (8) and support area (11); meanwhile the area (12) of winding (8) is insulated electrically from the support area (11) provided that areas (11, 12) interact. At that according to this invention the support area (11) is formed by protrusion (13) of the bottom (2b) oriented inward of the electrical machine (1).
 Method to produce motor coils / 2387066
Coils are wound on the frame by copper wire coated with polyethylene lacquer. Coils surface is insulated by a layer of insulating tapes. Isoflex spacers are arranged between layers of turns. Note that coil surface insulation is made by one layer of tape "ЛЭС" and tape "ГИП-ТС-Пл", and six layers of glass-mica tape "ЛСЭП-934-ТПл". Then, coils are impregnated with thermosetting lacquer in vacuum-pressurisation procedure. Coils fitted in stator, the coils are additionally coated by isolation enamel "ГФ92ХС" or insulating lacquer "БТ-99".
 Electric winding wire with rectangular cross section / 2385522
Wire (1) of electric winding with rectangular cross section is designed for production of electric winding for household appliances, which contains liquid used as cooling substance, where winding is submerged under operational conditions. Protruding areas (2), which consist of insulating material, are installed at the distance from each other on at least one side of winding wire (1) along its whole length.
 Method of making insulation for windings of electrical machines / 2366060
Invention relates to electrical engineering and the technology of making insulation for windings of direct current machines. The insulation made from impregnated tape should be pressed so as to remove air and uniformly distribute the binding substance. For this purpose according to the invention, a polymer film is used as one of the substrates in the glass mica tape, obtaining a multi-layer composition of alternating layers of film and glass mica. The binding substance used in such a composition is a mixture without a solvent (polyetherimide compounds), which is in a state of viscous flow and which, at impregnation temperature of 50 - 70°C (viscosity 50-150 s on B3-4) provides for penetration of the compound into the insulation. The amount of binding substance in the tape should be between 23% and 30%. The insulated winding is put into an impregnating vessel, which is evacuated and excess pressure is created by the impregnating compound. Due to presence of the polymer film, the impregnating compound does not penetrate the insulation. The insulation is pressed, thereby removing residual air and redistributing the binding substance in the insulation. Insulation made this way has stable electrophysical properties and high water- and moisture resistance.
 The winding of electrical machines high voltage / 2187874
The invention relates to electrical engineering, in particular to the manufacture of windings of electrical machines high voltage
 A method of manufacturing a stator of a large electric machine / 2169981
The invention relates to electrical engineering
 Rotor of synchronous electric machine and synchronous electric machine comprising such rotor / 2444106
Rotor of a synchronous electric machine comprises a core, permanent magnets fixed on the core and forming a magnetic system of the rotor, and also a start-up winding made in the form of a hollow cylinder, which is made of current-conducting material and is pressed onto the magnetic system of the rotor. At the same time according to the invention the current-conducting material, from which the hollow cylinder is made, is magnetic and has specific electric resistance within (0.6-1.1) 10-7 Ohm and relative magnetic permeability within 10-50.
Rotor of asynchronous motor / 2395151
There is proposed rotor of asynchronous motor which includes magnetic conductor fixed on shaft and in slots of which there arranged is short-circuited winding made from cast metal. Cast metal of winding contains 98.80 - 99.95% of copper, as well as alloying elements and impurities in the form of plumbum, stannum, bismuth, antimony, nickel, zinc, cadmium, phosphorus and arsenic. In addition, lithium is added to cast metal of short-circuited winding.
 Six-phase lap bar winding of electrical machine stator / 2257658
Proposed six-phase lap bar winding is assembled two three-phase windings spaced 30 electrical degrees apart, terminal leads of each winding being disposed on opposite ends of stator. End portions of each winding on end opposing terminal leads have short overhang corresponding to short winding pitch on end of terminal leads; first stator slot pitch on end opposing terminal leads is afforded by connection of bar winding with aid of skew head. Phase groups on both ends of machine have similar overhang of end windings with alternating straight and skew heads of bars. As an alternative, proposed six-phase lap bar winding is assembled of tow three-phase windings spaced 30 electrical degrees apart with terminal leads of each winding disposed on opposite ends of stator. One of three-phase windings has end portions with skew heads both on end of terminal leads and on opposite end and other three-phase winding has its end portions with straight heads on both ends of stator, length of end portions of both windings being equal on each end of stator. Both alternatives are characterized in that they have short end portions of windings and use same type of bars and, hence, same equipment for their manufacture for upper range of winding and, likewise, same type of bars for bottom range of winding.
 Electrical machine winding module / 2253175
Proposed winding module 18 for rotary electrical machine has at least one flat winding 19 disposed on rotor body, its end-winding turns being bent through certain angle. Top 19B of bent end-winding turns is aligned with rotor axis of revolution 21. Flat winding of module functions to ensure on-load axial displacement which makes it possible for end portions of winding to elongate and shorten in response to rotor speed variations without causing elongations and reduces stresses in winding under various operating conditions.
 The motor electrophrenic centrifugal pumps / 2211520
The invention relates to the field of electrical engineering, in particular for motor installations electrophrenic centrifugal pumps with squirrel-cage rotor
 Stator of rotating electric machine excited by permanent magnets / 2516367
Stator has a variety of segments located close to each other in the circumferential direction. According to the invention the above segments have teeth and slots passing in the longitudinal direction of the stator, at that the neighbouring segments touch each other at the segment boundary and teeth of the neighbouring segments are located so that at the segment boundary a tooth of one segment touches the tooth of the neighbouring segment, herewith the total width of the teeth touching each other at the respective boundary is bigger than the total width of the majority of teeth which are not placed at the segment boundaries or all teeth which are not placed at the segment boundaries directly, at that the minority of teeth not placed directly at the boundary of the specified segments has the same width, which is bigger than the total width of the majority of teeth which are not located directly at the segment border.
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FIELD: electricity. SUBSTANCE: present invention relates to electrical engineering, particularly electrical machines, and peculiarities of making permanent-magnet synchronous motors for a drainage pump. The disclosed synchronous motor comprises a permanent-magnet rotor for rotating the a rotor wheel, a pump housing on which the permanent-magnet rotor rests, a stator core and a stator coil. According to the invention, the stator coil has a winding made of aluminium enamelled wire and is provided with a part for connection by welding the lead wire of said winding with a contact for connecting with the lead wire; the winding is hermetically insulated in a protective housing; the outer surface of the part for connection by welding of the lead wire of the winding made of aluminium enamelled wire is tin-plated by soldering or tin electroplating, wherein the part for connection by welding of the lead wire, tin-plated by soldering or tin electroplating, is welded to the contact for connection with the lead wire; the outer surface of the winding made of aluminium enamelled wire is first coated with insulating paper tape and then hermetically insulated by said protective housing. EFFECT: enabling prolonged operation of motors in an air medium containing oxygen without oxidation of the aluminium lead wire while simplifying the process of welding said lead wire and simplifying the process of welding to a contact terminal; protecting aluminium enamelled wire from damage under the action of high temperature during hermetic insulation of the winding in the protective housing, formed by filling with plastic or epoxy resin. 8 cl, 4 dwg
The technical field The present invention is a synchronous motor with permanent magnets for drain pump, which feature is the use of aluminum enameled wire used for the windings of the stator. Prior art Studies on the use of aluminum wire with enamel insulation in electric motors began in China in the 1970's. This aluminum enamel-wire, as well as points or areas of his joining by welding or soldering, are oxidized by interaction with oxygen contained in air. In addition, aluminum enamel-wire and place of joining by welding quickly corrode due to acid and alkaline substances contained in the humid air. Due to the fact that aluminum enamel-wire, especially those with a diameter less than 1 mm, it is easy to oxidation and corrosion, which is a technical barrier, its application in electric motors is eliminated. Still not been found practical use of aluminum enameled wire for use in synchronous motors with permanent magnets for drainage pumps. Disclosure of inventions The present invention provides a synchronous motor with permanent magnets for drain pump, which has the prob is the possibility to prevent the oxidation and corrosion of coils of aluminum enamel-wire and welded joints. This synchronous motor with permanent magnets for drain pump includes a rotor with permanent magnets for rotation of the impeller, the pump housing for supporting the rotor with permanent magnets, a stator core and a stator coil that is wound aluminum enamel-wire. The winding of aluminum enamel-wire hermetically isolated in a protective housing. As the winding of aluminum enamel-wire hermetically isolated in a protective housing, which it is isolated from air and, in particular, from acids and alkalis contained in the environment, it prevents oxidation and corrosion of the aluminium enamel-wire winding. In particular, the connection part is welded lead wire, aluminum enameled wire winding is protected or covered with insulating material that insulates the connection part is welded on the outside so that the connection part is welded according to the present invention also achieves the technical challenge for the protection from oxidation and corrosion. In this case, a protective case used for isolation and placement inside aluminum enamel-wire, made in the form of protective housing made of plastic, such as fiberglass, or epoxy resin. This not only increases the effectiveness of this isolation, but also quite easy to implement in the process of production is. In one of the embodiments, the protective housing is made of plastic in the form of a coil of aluminum enamel wire. In another variant implementation, the protective body is made of epoxy resin formation by pouring epoxy resin into the hollow body from the inside aluminum enamel-wire and its subsequent curing. Also, aluminum enamel-wire and the connecting part by welding the lead wires are protected or insulated from the outer side due to their coating and sealing by pouring epoxy resin. During the operation of sealing, the outer surface of the winding of aluminum enameled wire may first be covered with insulating paper tape, and then hermetically isolated by coating a plastic or epoxy resin. In this invention, the surface portion of the connection by welding the lead wire of the winding of aluminum enamel-wire pre-obslujivaut by electrodeposition or by soldering tin. The diameter aluminum enamel-wire may be less than or equal to 1.0 mm, and the thickness of the stator core may be 10-50 mm The invention has the following technical advantages Since the coil winding of the stator, particularly the connection part by welding its lead wire, tightly insulated with plastic or epoxy resin, and thereby isolated from acidic and alkaline substances, contained in the humid ambient air. This effectively prevents corrosion of the winding coils of the stator, and also protects the connection part is welding aluminum enamel-wire where it ends welded to the copper contact from the oxidation of copper and aluminium under the action of the oxygen of the air. The coil winding of the stator is hermetically isolated plastic. The plastic protects it and the lead wire of the coil on the outside of corrosion under the influence of moisture containing salt. This design according to the invention also enables high-performance and effectively implement mass or mass production with low cost and high quality products. Next follows a detailed description, accompanied by drawings. Brief description of drawings Figure 1 - General view of a synchronous motor with permanent magnets for the drainage pump according to the present invention. Figure 2 - schematic view of the coil of the stator without insulation plastic in the present invention. Figure 3 - schematic view of the coil of the stator, hermetically isolated plastic according to the present invention. 4 is a schematic view of the coil of the stator, hermetically isolated epoxy resin of the present invention. The best option of carrying out the invention Figure 1 illustrare the General arrangement of a synchronous motor with permanent magnets for drain pump. As shown in figure 1, a synchronous motor with permanent magnets for the drainage pump according to the present invention includes a rotor with permanent magnets 2, serves for the rotation of the impeller, the pump housing 3 is designed to maintain the rotor with permanent magnets, the stator core 5 and the stator coil 4. Here, the stator coil 4 has a coil of aluminum enameled wire, is made by winding an aluminum enamel-wire 7, which is hermetically isolated in a protective housing 10. In particular the outer surface side of the connection by welding 9 pin wire winding of aluminum enamel wires (see figure 2) secured or covered with insulating material on the outside. So part of the connection by welding is effectively protected from oxidation and corrosion. Insulating materials may include insulating adhesive, insulating varnish, epoxy resin, etc. Figure 1 also shows the drain pump, which uses the present invention. This drain pump can pump out the water due to the rotation of the impeller 1, which drives a rotor with permanent magnets 2 a synchronous motor. Rotor with permanent magnets 2 is based on the pump housing 3. The stator coil 4 is placed on the stator core 5, which is fixed to the pump housing 3. When an electric current about the result through the stator coil 4, the rotor permanent magnet 2 rotates, driving the impeller 1, pumping the water. Figure 2 shows the stator coil 4, which is not isolated. As shown in figure 2, the winding of aluminum enameled wire is made by winding an aluminum enamel-wire 7 around the armature coil 6. Before insulation of the stator coil 4, the outer surface of the winding of aluminum enameled wire is covered with one or several layers of insulating paper tape 8. In addition, prior to isolation of the stator coil 4, the outer surface portion of the connection by welding of the lead wire, aluminum enameled wire is processed. For example, the connection part is welded lead wire, aluminum enameled wire covered with insulating material such as insulating varnish and the like, to isolate from the outside. The connection part by welding 9 pin wire winding of aluminum enamel-wire is used for welding, pre-treated surface of this part by electrodeposition or soldering tin. Figure 3 shows the stator coil, which is already isolated. Aluminum enamel-wire 7 wound on the coil form 6, hermetically sealed in a protective housing 10 after coating insulating paper 8. The protective cover 10 may be ispolnen in the form of a plastic body in the form of a coil 6 wound with aluminum enamel-wire 7. In other words, protective plastic case is due to the sealing of the armature coil 6 wound with aluminum enamel-wire with the plastic material. In addition, the connection part by welding 9 pin wire winding of aluminum enameled wire is also hermetically sealed in a protective housing 10. Figure 4 shows the stator coil, which is hermetically isolated epoxy resin. The stator coil 4, which is wound aluminum enamel-wire, is first placed in the cavity thin-walled hollow body of the pump casing, and then filled with epoxy resin. Winding aluminum enamel wire, especially the part of the connection by welding of lead wires that are covered and sealed with epoxy resin. In the invention, the diameter aluminum enamel-wire 7 is less than or equal to 1.0 mm, and the thickness of the stator core 5 is from 10 mm to 50 mm Using the invention achieves the following technical result. Since the coil winding of the stator, particularly the connection part welding lead wires hermetically insulated with plastic or epoxy resin, they are isolated from acidic and alkaline substances contained in the moist ambient air. This effectively protects the coil winding of the stator from corrosion, as well as the end of the aluminum enamel-wire, Pref is extended to the copper contact from the oxidation of copper and aluminium under the action of the oxygen of the air. In the above-mentioned stator coil hermetically isolated plastic, plastic seals the coil winding of the stator and lead wire of the stator coil, insulating their outer side, which effectively prevents corrosion of the winding coils of the stator from moisture containing salt. 1. Synchronous motor with permanent magnets for drain pump, which is designed to operate in humid ambient air, comprising a rotor with permanent magnets used for the rotation of the impeller, pump casing, which is based on a rotor with permanent magnets, the stator core and the stator coil, characterized in that: 2. The electric motor according to claim 1, characterized in that the connection part is welded lead wires are protected or covered with insulating material so as to isolate it from the outside. 3. The electric motor according to claim 1, characterized in that the protective casing is made of plastic or epoxy resin. 4. The electric motor according to claim 3, characterized in that the protective casing is made from plastic in the form of a coil wound with aluminum enamel-wire. 5. The electric motor according to claim 3, characterized in that the protective housing is formed of epoxy resin by pouring epoxy resin into the hollow body from the inside aluminum enamel-wire and its subsequent curing. 6. The electric motor according to claim 5, characterized in that the aluminum enamel-wire and the connecting part by welding the lead wire is covered and hermetically isolated epoxy resin. 7. The electric motor according to claim 1, characterized in that the diameter of the aluminum enamel wire is made less than or equal to 1.0 mm 8. The electric motor according to claim 1, characterized in that the thickness of the stator core is 10-50 mm.
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