KR20090038113A - Motor - Google Patents

Abstract

An electric motor is provided to improve efficiency of a stator coil by applying electromagnetic force generated in the stator coil to an iron coil without loss. An armature core(310) is combined with a heat dissipation combination unit(311) by a rivet or bolt. The armature coil is wound around a bobbin. The armature coil is inserted between the armature cores. The armature coil(320) completely surrounds an inner side and an outer side of the armature core. A rotor is combined with a rotation axis(121) by a key groove(122). A rotor coil(520) is inserted into an inner rotator core(530). The outer rotor core is assembled in the outer side of the inner rotor core. A plurality of squirrel cage conductors are arranged in the outer rotor core with the regular interval. A plurality of coupling holes(541) are formed in the outer rotor core. The plurality of coupling holes fix the outer rotor core.

Description

Electric motor

The present invention relates to the structure of the core and the coil manufacturing form for the magnetization of the coil used in the motor, and more particularly to the structure and structure of the iron core and coil manufacturing of the motor to have an efficient function, and to facilitate the manufacture and repair It relates to a motor structure.

It is common that the stator iron core of a general electric motor is integrated, and the coil is inserted into a groove inside the stator. In addition, the rotor of a synchronous motor often uses a permanent magnet or an exciter generator.

The motor stator iron core and coil are currently difficult to work with, and the electromagnetic force generated from the coil has a low utilization rate.When the excitation of the rotating body is a permanent magnet, the output is lowered when the motor is overheated, and the life is shortened due to demagnetization. The form using the generator is large in size, there is a problem that the efficiency of the motor is inferior.

The present invention is to solve the above problems,

The electromagnetic force generated in all parts of the coil installed in the iron core of the motor is applied to the iron core, and the iron core is simple to manufacture and consumes less raw materials, and the coil can be effectively installed around the core. The goal is to make the motor easy to manufacture, to increase the utilization rate of the coil, to make the electric insulation easy and efficient.

The present invention is different from the present form of the coil installed in the stator iron core of the electric motor as a means for solving the above problems, the form that was installed in the inner groove (Slot) of the iron core around the inner and outer sides of the iron core at the shortest distance In the form of wrapping, most of the electromagnetic force generated in the coil was applied to the iron core.

The stator iron core is separated and laminated to form a coil that can be inserted later, while reducing the magnetic resistance. The coil is wound between the core and simply inserted between the cores. have.

The rotor of the motor is equipped with an excitation coil to have a great rotational force, and the excitation force of the excitation coil makes an electrical connection with an external power source by a circular rotary transformer separately installed. The heating part of the rotary transformer and the heat generation of the rectifier The part is generally considered to be installed outside the motor.

The effect of the present invention is configured by dividing the stator iron core of the motor and inserting a coil wound in a separate bobbin to apply most of the electromagnetic force generated from the coil to the iron core without loss to reduce the efficiency of the stator coil of the motor. In addition, the simple structure of the core and coil work can reduce the raw material and manufacturing cost.

In addition, the rotating body installs an excitation coil that can obtain a strong rotational force, and the transformer for obtaining the excitation power from the outside can be installed outside to avoid the sensitive part of the heat generation of the motor, thereby making a large capacity synchronous motor small. In addition, since the self-start is possible by the squirrel rotor during the initial start-up, there is no need for a separate starting device, which is a simple installation device, thereby reducing the installation cost.

Detailed description of the present invention for achieving the above object will be described with reference to the drawings.

1 is a cross-sectional view of a four-pole synchronous motor as an embodiment of the present invention, the armature core 310 inside the motor case 101 is coupled to be integrated such as a heat dissipation assembly 311 and a rivet coupling, The armature coil 320 is configured to completely surround the inside and the outside of the armature core (310).

Referring to the configuration of the armature, that is, the stator in order to first combine the iron core 310 is laminated to a predetermined thickness by using the assembly hole, the heat dissipation assembly 311 and the rivet or bolt assembly, this armature iron core 310 The armature coil 320 wound around the bobbin is inserted between the fields.

The armature coil 320 is wound around the bobbin (Bobbin), constitute a protective layer so that the coil is not exposed to the outside, and facilitates the assembly process by making the power connection conductor to a certain position outside the protective layer.

The armature core 310 makes it easy to combine with the neighboring armature iron core 310, the armature iron core 310 is laminated and assembled in close contact with the hole inside the armature coil 320, the armature iron core 310 is armature When the coil 320 is assembled into a state where the coil 320 is inserted, the coil 320 is assembled into a fitting form in the motor case 101.

The rotor is fixed to the rotating shaft 121 and the key grooves 122 to be coupled, and the rotor coil 520 having a coil formed in a separate bobbin is inserted into the stacked inner rotary iron cores 530 and on the outside. The laminated external rotating iron core 540 is assembled in a fitting form.

The number of outer rotor iron cores 540 is equal to the number of poles of the motor, and forms a constant iron core gap between the outer rotor iron cores 540 and other adjacent outer rotor iron cores 540, and a nonmagnetic material between the gaps. Can be filled with

Each of the outer rotor iron core 540 has a form of a non-magnetic conductor in parallel with the rotary shaft 121 in the form of a squirt conductor 550 is arranged at regular intervals, and the outer rotor iron core 540 has a firm and constant interval It is a structure which installs the many coupling hole 541 fixed so that it may hold | maintain.

2 is a cross-sectional view showing a four-pole synchronous motor cut in the direction of the rotation shaft 121 as an embodiment of the present invention is configured as follows.

The armature core 310 and the armature coil 320 having a shape surrounding the outside thereof are installed inside the case 101, and the inner rotating iron core 530 and the rotor coil 520 and the outside are installed on the rotating shaft 121. The rotary iron core 540 is sequentially coupled, and a short ring 580 for shorting the dense conductor 550 shown in FIG. 1 is provided at both ends thereof.

The field power supply to the rotor coil 520 is composed of a primary fixed coil 611 and a secondary rotary coil 661 outside the motor using a single phase transformer as a power transformer, and the secondary rotor coil 661 is Is connected to the rotor coil 520 and the rotor coil 520 inside the wire shaft through a wire installation groove 665 formed to a certain depth on the rotary shaft 121, and connected to the rotor coil 520 in the power connector 570 inside the motor The secondary rotary coil 661 is configured to supply DC power in a state that is already through the rectifier.

The primary fixed coil 611 of the power transformer houses and protects the coil in a non-magnetic case 612, and is fixed to one cover 109 of the motor with a coil fixing bolt 663, and the secondary rotating coil 661 is It is a shape that is inserted into the rotary coil iron core 662 of the ferromagnetic material and is integrally formed with the non-magnetic rotating coil support 663, and the rotary shaft 121 is coupled to the rotary shaft 121 using a coupling key groove or the like.

The fan cover 701 is installed near the power transformer secondary rotary coil 661 to effectively dissipate heat generated from the power transformer, the rectifier and the motor, and protect the fan 700 and the power transformer. Is configured to enable air flow and couple to the case 101 with a coupling bolt 703.

The rotating shaft of the motor is supported by a bearing 123 installed on the cover 108 and the cover 109 and is configured to rotate.

3 shows an external stator, that is, an armature in an example of a four-pole synchronous motor according to one embodiment of the present invention.

The armature coil 320 may be wound around a bobbin of a certain type, and in some cases, the armature coil 320 may be similar to the armature shown in FIGS. 1 and 3 by other methods.

A coil bobbin hole 321 is formed inside the armature coil 320, and a coil start portion 322 and a coil end portion 323 are positioned at one side of the armature coil 320 at a predetermined interval, and protrude from the armature coil 320. The part is composed of a projecting structure so that it can be connected to the outside by direct welding.

The armature core 310 is a structure in which steel plates are stacked to be assembled using the armature core coupling hole 311, and has an armature core location groove 312 to maintain a predetermined shape during assembly.

The right iron core coupling part 315 and the left iron core coupling part 316 of the armature core 310 can be easily combined with other armature iron cores 310, and the armature coil 320 is smoothly installed therebetween, and if there is a gap between them, The heat dissipation structure 330 for transferring heat generated from the iron core to the motor case 101 is integrated with the armature iron core 310 by the iron core coupling bolt 333 in the heat dissipation structure coupling hole 331. It is a configuration to combine.

The armature core portion 313 is a configuration that ensures a smooth rotation space when the rotor is installed inside when the coupling is completed in the state in which the armature coil 320 is inserted into the armature core 310 is completed.

FIG. 4 illustrates a configuration of a coil connecting plate 410 for enabling automatic production by allowing regular work at regular intervals in the electrical connection of the armature coils 320 in the example of the 4-pole synchronous motor according to an embodiment of the present invention. As illustrated, the outer side hole 411 and the inner side hole 412 form through-holes in pairs by the number of armature coils 320, respectively, and external connection grooves 413 which can be easily connected to them by wires or the like. ) And internal connection grooves 414 and cross connection grooves 415 are formed to a certain depth, so that the coils can be smoothly connected to each other or the coils to external wires. By using printing, the armature coil 320 or the armature coil 320 is easily connected to the external power line, and after the connection, the coil connecting plate cover 420 is fitted to cover the fitting to protect the connection portion. .

5 is a cross-sectional view and an exploded perspective view of a four-pole synchronous motor rotor as an embodiment of the present invention.

A rotation shaft hole 129 is formed in the inner rotor iron core 530, and a key groove 122 for key coupling with the rotation shaft is formed.

The inner rotor iron core 530 and the outer rotor iron core 540 are each provided with an inner rotor iron core coupling groove 531 and an outer rotor iron core coupling groove 541 for coupling to each other. ) Is a configuration having a position stabilizing groove 536 and a rivet fixing hole 535.

The rotor coil 520 is configured to fix the external rotor iron core 540 by fitting it in a state of being fitted to the inner rotor iron core 530, and the short ring structure 580 fixes the external rotating iron core 540. When coupled and the short ring structure 580 is coupled by bolting, etc. by the coupling hole 541, the squirrel rotor conductor 550 installed in the outer rotating iron core can pass through the conductor hole 555 to be coupled in a stable state. Make up the configuration.

FIG. 6 is a view illustrating a configuration of a wire penetrator 650 installed in a wire installation groove 665 of a rotating shaft for supplying power to a rotating field of a 4-pole synchronous motor according to an embodiment of the present invention.

The wire penetrator 650 installed in the groove of the rotating shaft 121 has a mechanical strength similar to that of the rotating shaft 121, and the penetrating wire 651 having a conductor 652 therein penetrates and may be protected. In the configuration having a hole is coupled to the wire installation groove 665 of the rotating shaft 121 in a fitting form.

FIG. 7 is a circuit diagram illustrating a power supply circuit for rotating a 4-pole synchronous motor, and includes a fixed power supply unit 710 for installing a primary transformer 611, and a rotating secondary transformer 661 and a rectifying unit 722. The external rotary power supply unit 720 is installed as a rotary coil unit 730 which is connected to the rotor coil 520 through a wire installed in the wire penetrator 650.

1 is an overall cross-sectional view of an external power source self-starting synchronous motor of the present invention.

Figure 2 is a cross-sectional view of the rotation axis direction of an external power source self-starting synchronous motor of an embodiment of the present invention.

3 is a configuration diagram of a stator coil and a coil of an external power source self-starting synchronous motor of one embodiment of the present invention.

Figure 4 is a configuration diagram of the stator coil connection plate of an external power source self-starting synchronous motor of the present invention.

5 is a configuration diagram of a rotor of an external power source self-starting synchronous motor of the present invention.

Figure 6 is a block diagram of an external power supply penetrating portion of an external power source self-starting synchronous motor of the present invention.

7 is an electrical connection diagram of the rotor excitation power supply of an external power source self-starting synchronous motor of an embodiment of the present invention.

Claims (9)

A motor in which the rotor is a winding type, wherein a power supply for supplying power to the field coil in the rotor has a form of a rotary transformer. In a motor having a form of a rotary transformer, a power supply for supplying power to a field coil in a rotor of a motor in which the rotor is a winding type, wherein the primary coil of the power transformer is fixed to the outside of the motor cover and the transformer secondary coil is The motor is coupled to the rotating shaft to rotate while facing the transformer primary coil on the outer side of the motor cover. Claim 2 is provided with a stop on the side of the rotating transformer secondary coil, and the connection between the rotating transformer outside the motor cover and the field coil of the rotor is connected through a wire penetrator passing through the bearing and the squirrel conductor and short-circuit ring to the rotor. An electric motor characterized by having a. The motor of claim 2, wherein the rotating transformer secondary coil is installed inside the rotating iron core that is open for a predetermined period in the direction of the fixed transformer primary coil. In an electric motor in which a part of the coil is inserted in a wide stator and a gap between the protrusions forms an approach distance between the rotor and the rotor, the coil installed on the stator core includes the inner side of the iron core and the outer side of the iron core. It is composed of a wrap-around form, the stator iron core is configured to combine and assemble in the internal position where the coil is located, and the stator coil is wound on a bobbin separated from the iron core and inserted into the iron core An electric motor, characterized in that. Coils are installed on the stator iron core of the motor where the insertion part of the coil is wide and the gap between the protrusions is narrow and the stator forms an approach distance between the rotor and the rotor. It is configured in the form, the stator iron core is configured to combine and assemble in the internal position where the coil is located, the stator coil is wound on the bobbin (Bobbin) separated from the iron core and inserted into the iron core In the motor, the stator iron core is formed in the direction of the axis of rotation, the protruding poles are each formed in pieces separated from the coil insertion portion, the iron core of the separated portion is fitted to the neighboring iron core while increasing the contact area Electric motor characterized by having The motor according to claim 6, wherein the stator iron core and the motor case are coupled to each other in a form of a custom assembly using a non-magnetic material as a connection medium. The motor of claim 5, wherein the connection point of the stator coil is directed toward one side, and the motor is connected to the coil, the coil, the coil, and the external power supply using a coil connecting plate. The motor according to claim 2, wherein the rotor-type rotor of the motor rotor having the winding type exciter has a form of laminated iron cores, forming grooves for iron core coupling, and coupling iron cores after coil insertion.

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