Description

REVOLVING CORE INDUCTION EQUIPMENT

Technical Field

[1] The present invention relates to a core structure for magnetization of a coil for use in an electric inductor, and more particularly, to an electric inductor having an effective induction structure corresponding to the iron core of the inductor, thus being capable of facilitating manufacturing. Background Art

[2] Typically, a coil and an iron core used in an electrical induction type machine, such as a transformer, an electric motor, a generator and the like are closely and fixedly arranged to each other.

[3] In addition, for a conventional induction motor, the direction of magnetic flux is perpendicular to a revolution shaft. It is difficult to insert a coil into a stator coil groove (slot), thereby degrading working efficiency. Furthermore, due to the nature thereof, a considerable portion of the coil is exposed outside, thereby deteriorating the efficiency of use of the coil and causing failure. Disclosure of Invention Technical Problem

[4] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a high efficiency revolving core inductor, which is capable of allowing an induction phenomenon to simultaneously occur at opposite poles of a simple induction structure. In the core inductor, a coil fixed to the induction structure has a cylindrical hole in its central portion, through which a revolving iron core is rotatably inserted, whereby the core is structurally stably held and the iron core can revolve smoothly. Furthermore, one or more induction coils or induction magnets are installed in the magnetic area of the iron core as the induction structure. Technical Solution

[5] In order to accomplish the above object, provided is a revolving core inductor having a revolution shaft rotatably supported by an internal structure thereof. The inductor includes an inner induction coil wound around a bobbin parallel to the revolution shaft and fixed to the center of the inductor; a revolving iron core rotatably inserted into the center portion of the internal coil, which protects the coil, wherein the iron core has extending portions integrally extending in predetermined directions from both ends thereof while the iron core passes through the coil, the extending portions being integrally and symmetrically arranged in an interval containing a predetermined

axial region; and a plurality of outer coils having iron cores parallel to the revolution shaft, the outer coils being concentrically arranged in a revolution region of the extending portion.

Advantageous Effects

[6] According to the present invention, the iron core rotates, instead of the coils or permanent magnets, so that the construction thereof is simplified and is structurally stable. In addition, the outer coils generate magnetic flux that is parallel to the revolution shaft, so that a generator, an electric motor and other measuring devices can be easily manufactured. Furthermore, stator coils are arranged parallel to the revolution shaft outside a stator, whereby induction efficiency can be improved. Brief Description of the Drawings

[7] FIG. 1 is a plan view of a revolving core inductor according to the present invention;

[8] FIG. 2 is a partial sectional view of the revolving core inductor of the present invention;

[9] FIG. 3 is an exploded perspective view of the revolving core inductor having an excitation-reinforced structure;

[10] FIG. 4 is a view of the excitation-reinforced structure;

[11] FIG. 5 is a perspective view of the assembled excitation-reinforced inductor;

[12] FIG. 6 is a sectional view of a short-coil revolving inductor showing the distribution of magnetic flux; and

[13] FIG. 7 is an exploded perspective view of the short-coil revolving inductor.

Best Mode for Carrying Out the Invention

[14] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[15] FIG. 1 is a plan view of a revolving core inductor according to an embodiment of the present invention. The inductor includes a substantially cylindrical body 100. An inner coil 110 is inserted into and fixed to the center of the body 100. A revolving iron core 150 is rotatably inserted into the center portion of the inner coil 110 and is configured to protect the coil. The inner coil 110 is connected with an external power source and a control circuit via an electric wire.

[16] The revolving iron core 150 has an extending portion 151 for enlarging the influence of a magnetic pole. Preferably, the revolving iron core has another extending portion at the opposite section of the body 100.

[17] First, second, and third outer coils 120, 130 and 140 have first, second and third coil wires 129, 139 and 149, respectively, by which an electronic control circuit, such as an inverter circuit or a motor driver circuit, is connected with an external power source so

as to control the operation of an inductor. The outer coils generate magnetic flux parallel to a revolution shaft. The outer coil may be constructed so that it has therein a fixed-type iron core, or alternatively, so that it does not have an iron core. Of course, the number and the shape of the extending portions 151 and the number of outer coils installed may be varied according to the use and the size thereof.

[18] FIG. 2 illustrates an inductor according to another embodiment of the present invention. The inductor has a structure in which an inner coil 210 is fixedly inserted into a body 200 such that it is connected with a power supply circuit or the like via an electric wire 219, and the inner coil 210 has a through-hole, in which a revolving iron core 250 rotates, and is configured to protect the coil.

[19] The revolving iron core 250 is provided with an upper extending portion 251 and a lower extending portion 252 provided corresponding to each other. First and second outer coils 220 and 230 are installed at a position influenced by a magnetic pole of the upper and lower extending portions 251 and 252.

[20] The first and second outer coils 220 and 230 generate magnetic flux parallel to a revolution shaft. As an alternative to the first and second outer coils 220 and 230, an electromagnet or a permanent magnet can be installed. In order to apply alternating magnetic poles to an operation coil 210, preferably, the number of coils or permanent magnets may be a multiple of the number of extending portions, and the magnetic poles of the magnet may be alternately changed while the revolving iron core 250 rotates.

[21] FIG. 3 illustrates an inductor according to still another embodiment of the present invention. The inductor has a structure in which an inner coil 310 is of a fixed type, an iron core protrudes from opposite ends of an outer coil 320 thereof, and the iron core consists of two iron core pieces, which are coupled with each other after being inserted into opposite sides of a coil bobbin hole. Here, the iron core pieces are formed to have a curved shape so as to enlarge the contact area between the pieces when connected. The number of outer coils 320 is almost double the number of protrusion arms of a revolving iron core 351. The outer coils are radially and circumferentially arranged at regular intervals.

[22] Revolving iron cores 351 and 351a are magnetically and mechanically connected by a revolution shaft 350. The revolving iron cores 351 and 351a are divided into two sections so that they are fixedly inserted into the inner coil 310 after the inner coil is first prepared. The revolving iron cores may be configured into a type including a revolving short-coil 610 illustrated in FIG. 7.

[23] Outer magnets are fixedly connected two by two with first and second moving parts

410 and 420, respectively, having a side sectional shape of 'U', so that the magnet structure connection levers 411 and 421 protruding outside from the first and second

moving parts 410 and 420 are integrally formed with first and second covers 301 and 302, respectively, so as to manipulate moving parts in pairs.

[24] The magnets 371, 372, 373 and 374 are respectively structured so that N and S magnetic poles alternate with each other in the direction of a revolution shaft, and the N and S magnetic poles alternately approach the revolving iron core 351 in a revolving direction.

[25] A rack and pinion structure 500 is constructed such that pinions engage with first and second racks 410a and 420a protruding up and down from the first and second moving parts 410 and 420, respectively, so as to smoothly manipulate a magnet structure divided into two pieces according to the left/right side manipulation of the opposite connection levers 411 and 421.

[26] To the sides and the opposite axial end sides of an internal structure, by which the rack and pinion structure 500 is rotatably supported, the first and second covers 301 and 302 and first and second support members 303 and 304 are respectively coupled by bolts.

[27] FIG. 4 illustrates a plan view showing the arrangement of the outer coil 320, the revolving iron core 351, the magnets 371, 372, 373 and 374, and a manipulation lever 550 in the above structure.

[28] FIG. 5 illustrates the construction and the arrangement of the outer coil 320 and the magnets 371, 372, 373 and 374, the construction of the manipulation lever 550, and the combination of the rack and pinion structure 500. Mode for the Invention

[29] FIG. 6 illustrates the construction of an inductor according to an embodiment of the present invention showing the distribution of magnetic flux, indicative of main flux flowing. The inductor is configured such that magnetic fluxes flow in a certain direction so that they do not cross each other. The magnetic fluxes 661 generated from an upper outer coil 620 are generated from an iron core 622 of the outer coil, and are returned to the original upper outer coil 620 via a rotator iron core 651, an iron core passage parallel to a revolution shaft 650 and an iron core 621 of the upper outer coil.

[30] The magnetic fluxes 662 generated from a lower outer coil 620 are generated from an iron core 622 of the outer coil and are returned to the original lower outer coil 620 via a rotator iron core 651, an iron core passage parallel to the revolution shaft 650, and an iron core 621 of the lower outer coil.

[31] FIG. 7 is an exploded perspective view of an inductor according to an embodiment of the present invention, in which an outer coil roll 630 is configured such that a certain amount of the coil is wound around a bobbin having an iron core hole. The opposite ends of the coil are connected with an external terminal 692 provided in an

outer protector 600 via an outer electric wire 629, and a coil protector 631 is formed outside the coil 620.

[32] The iron core inserted into the outer coil is divided into two pieces, which are made curved so as to enlarge their contact areas upon connection. The iron core 621 has an iron core projection having, on one side thereof, a shading coil 627, and is inserted into an outer coil bobbin 620. The iron core 622 of the outer coil has an iron core projection having, on one side thereof, a shading coil 627, and is inserted into the same outer coil bobbin 620. This subsequently forms the single outer coil roll 630.

[33] The number of outer coil rolls 630 constructed as above is determined according to the type and size of an electric motor or the like, and the plurality of outer coil rolls 630 is installed in a stator frame 680 at regular intervals. The stator frame 680 is provided with outer coil holes 619, the number of which corresponds to the number of the outer coil rolls 630. A stator radiator 681 as a heating element is closely inserted into the circumference of the outer coil roll 630.

[34] Revolving magnetic poles 651 and 652 have pole spaces 654 formed on the circumferences thereof. The magnetic poles 651 and 652 pass through the revolution shaft 650 and are connected with each other by the iron core. On the outer portion of the iron core between the magnetic poles 651 and 652, a revolving short-coil 610 is provided.

[35] The revolving short-coil 610 is substantial enough to cause electric induction in conjunction with the outer magnetic pole, and both ends thereof are electrically connected with each other, causing a short-circuit.

[36] A rotator of an electric motor is configured such that the revolving magnetic poles

651 and 652 are fixedly inserted on both ends of the short-coil 610, and support bearings 641 and 642 are inserted last, so that it rotates about the revolution shaft 650.

[37] The outer protector 600 is configured such that the stator frame 680, in which the outer coil roll 630 and the outer coil radiator 681 are inserted, is fixedly fitted into a hole 699. A plurality of cooling holes 691 is provided in a through-hole type, an outer terminal 692 connectable with an external power source through the connection of a stator electric wire 629 of the outer coil roll 630 is installed in a frame in a type of terminal box, and a plurality of bolt holes 693, making possible assembly with the cover in conjunction with bolts, is provided.

[38] The revolving shaft 650 can be connected with the exterior through a shaft hole 609 of a protection lid 601, and the support bearing 641 is inserted into a bearing groove 662 and supported by the outer protector 600.

[39] The bearing 641, the revolving magnetic pole 651, the revolving short-coil 610 and another revolving magnetic pole 652 are brought into contact with, and fixedly assembled to, each other, and the support bearing 642 is coupled thereto. The stator

frame 680, to which the rotator and the outer coil roll 630 are assembled, is inserted into the outer protector 600, and the protection lid 601 is coupled thereto. Bolts are fastened to the holes 619 of the protection lid 601 and the lid-coupling holes 689 of the outer protector 600, thereby completing the assembly.

[40] The outer coil roll 630 is configured so as to be connected with an electronic control circuit, such as an inverter, a motor driver circuit, or the like, via the external terminal 692 to which the outer electric wire 629 is connected, thereby generating induced electromotive force and controlling the operation of an inductor. Industrial Applicability

[41] As set forth before, according to the induced electromotive force generating coil, the iron core and parts thereof of the present invention, the construction and the shape of the iron core used in the coil for generating induced electromotive force are configured so as to maximize the efficiency of the generation of the induced electromotive force, thereby saving energy in a revolution device. The coil generating induced electromotive force is configured so as to smoothly rotate after the iron core is inserted into the coil, the magnetic pole arm extends up to a certain position so as to exert the influence of the induced electromotive force from the iron core on the upper and lower portions of the coil, and a measuring or driving coil or permanent magnet, generating magnetic flux parallel to the revolution shaft, is installed separately or together with each other at a certain position, thereby obtaining an induction effect even if only the iron core revolves.