KR101123810B1 - Induction heating device - Google Patents

Abstract

The present invention relates to an induction superheater which suppresses an increase in weight as a whole of the apparatus and does not overheat the edge portion of the object to be heated.
To this end, the present invention, in the induction heating apparatus for supplying a high frequency current to the heating coil to induction heating the object to be heated, having a first heating coil for feeding the high frequency current, and a second heating coil for feeding the high frequency current, The first heating coil has an almost V-shaped portion, the second heating coil has an almost M-shaped portion, and the substantially V-shaped portion of the first coil and the almost M-shaped portion of the second coil The first heating coil and the second heating coil are disposed substantially parallel to each other so that a substantially rectangular space is formed so as not to be electrically connected, and at least one of the first heating coil and the second heating coil is disposed in substantially parallel direction. Free to move.

Description

Induction Heating Equipment {INDUCTION HEATING DEVICE}

The present invention relates to an induction heating apparatus, and more particularly, to use when heating a thin plate-like heated object (hereinafter, referred to as a thin plate-shaped heated object) consisting of a nonmagnetic material and a magnetic material. It relates to a suitable induction heating device.

In general, when inductively heating a thin plate-like object to be heated of a magnetic material, heating is performed using a so-called induction heating device having a tunnel coil as a heating coil.

However, when induction heating of a non-magnetic thin sheet heating material is conducted using an induction heating device provided with such a tunnel coil, the induction current generated on each of the front and rear surfaces of the thin plate heated object can be canceled and heated. There was no.

For this reason, when inductively heating the thin-plate-shaped to-be-heated material of a nonmagnetic material, it heated as a heating coil using the so-called induction heating apparatus provided with the transverse coil.

Here, as an example of the induction heating apparatus provided with the above-described transverse coil, the thin plate-like heated object is heated by conveying the thin plate-like heated object from the upper side or the lower side of the heating coil formed in a predetermined shape. The technique to do is known.

However, if the heating coil is fixedly formed in a predetermined shape, the length L1 in the width direction of the shape formed by the heating coil is equal to or greater than the width W1 of the thin plate-like object to be heated by conveying the upper side or the lower side of the heating coil. If large, the induced current concentrates on the edge portion of the thin plate-like object to be heated, causing a problem that the edge portion is excessively heated (see FIG. 1).

As a means for solving such a problem, it is shown as Unexamined-Japanese-Patent No. 63-317630 which is proposed as patent document 1, and Unexamined-Japanese-Patent No. 2007-122924 or patent document 3 which are presented as patent document 2, for example. The technique disclosed in Unexamined-Japanese-Patent No. 8-37084, etc. are proposed.

That is, the technique disclosed in JP-A-63-317630 discloses a thin plate-like object to be heated in a space formed by arranging a ferrite core in which a heating coil is wound so as to face the convex portion. In the transverse induction heating apparatus for heating a thin plate-like object, the edge of the thin plate-like object to be passed through the space is provided by providing a substantially co-shaped ferrite core near both ends of the thin plate passing through the formed space. The secondary current concentrating on the part is dispersed to prevent the edge portion of the thin plate-like object to be heated from being excessively heated.

Moreover, the technique disclosed by Unexamined-Japanese-Patent No. 2007-122924 is a transverse type induction heating apparatus which heats the upper side of the ferrite core by which the heating coil was wound around the convex part, and heats it through a thin plate-shaped heated object. Between the thin plate-like object to be heated and the ferrite core, by providing a secondary coil for generating secondary magnetic flux using a leakage magnetic flux of the primary magnetic flux generated by the primary coil, which is a heating coil wound around the ferrite core, It is to mitigate the temperature rise and the temperature drop of the inner part of both ends.

In addition, the technique disclosed in Japanese Unexamined Patent Application Publication No. Hei 8-37084 combines two roughly J-shaped conductors each disposed on the magnetic flux guide so as to oppose the heating coil assembly that forms the central space, and the heating coil assembly In an induction heating apparatus for heating a thin heated object by passing a thin heated object through a space formed by the step of forming a tab at a portion where two roughly J-shaped conductors are combined to form an end portion of the thin heated object. It will not be able to overheat.

However, in the technique disclosed in Patent Literature 1 and Patent Literature 2, almost all of the induction heating portions in the induction heating apparatus are composed of a magnetic material, and in the technique disclosed in Patent Literature 3, a predetermined It is pointed out that the weight of the whole apparatus becomes very large, resulting in a high cost during installation or transportation, because it is arranged by twisting the heating coil assembly over the magnetic flux guide of length.

Patent Document 1: Japanese Patent Application Laid-Open No. 63-317630 Patent Document 2: Japanese Patent Application Laid-Open No. 2007-122924 Patent Document 3: Japanese Patent Application Laid-Open No. 8-37084

SUMMARY OF THE INVENTION The present invention has been made in view of various problems with the prior art as described above, and an object thereof is to provide an induction heating apparatus which suppresses an increase in weight as a whole apparatus and does not overheat the edge portion of the object to be heated. Is to provide.

In order to achieve the above object, the present invention provides an induction heating apparatus for induction heating a heated object by feeding a high frequency current to a heating coil, comprising: a first heating coil for feeding a high frequency current and a second heating coil for feeding a high frequency current Wherein the first heating coil has a substantially V-shaped portion and the second heating coil has a nearly M-shaped portion, the substantially V-shaped portion of the first coil and the substantially M-shaped portion of the second coil. The first heating coil and the second heating coil are disposed substantially parallel to each other so as to form a substantially rectangular space intersecting the portions so as not to be electrically connected, and at least one of the first heating coil and the second heating coil is substantially disposed. The movement in the parallel direction is free.

In the present invention described above, the first heating coil and the first heater are located outside the substantially rectangular space formed to intersect the first heating coil and the second heating coil so as not to be electrically connected. The two heating coils intersect so as not to be electrically connected to form a substantially triangular space, and the magnetic flux generated by the high frequency current is reversed in the almost rectangular space and the substantially triangular space.

In the present invention, the first heating coil and the second heating coil are freely in contact with each other at an end thereof, and the first heating coil and the second heating coil are each other. The end is connected to the feed line of the high frequency current.

In the present invention, the bent portion of the substantially V-shaped portion of the first heating coil has an arc shape formed by a curve, and the bent portion of the approximately M-shaped portion of the second heating coil is provided. It is intended to have an arc shape formed by a curve.

Further, in the above invention, the bent portion located in the center of the substantially V-shaped portion in the first heating coil is formed such that it is located in the vicinity of the heated object in the first heating coil, and the second The bent portion located in the center of the approximately M-shaped portion of the heating coil is formed to be located in the vicinity of the object to be heated in the second heating coil.

In addition, the present invention relates to an induction heating apparatus in which a heating coil is supplied with a high frequency current to induction heating a heated object, the induction heating apparatus comprising the first heating coil and the second heating coil in the induction heating apparatus according to the present invention. Two sets of tanks are provided, and high frequency currents are fed so that the directions of the magnetic fields generated by the respective sets of two tanks are opposite to each other.

In the present invention, the first heating coil and the second heating coil are arranged on one side of the heated object.

Moreover, in this invention, in the said invention, the plate-shaped magnetic material is arrange | positioned so that the said 1st heating coil and the said 2nd heating coil arrange | positioned at one side with respect to the said to-be-heated object may be fitted by the said to-be-heated material. I did it.

Moreover, in this invention, in the said invention, the said 1st heating coil and the said 2nd heating coil are arrange | positioned with respect to the to-be-heated thing on both the one side and the other side, respectively.

Moreover, in this invention, in the said invention, the 1st plate-shaped magnetic material which makes the said 1st heating coil and the said 2nd heating coil arrange | positioned at one side with respect to the said to-be-heated object fit by the said to-be-heated material And the second plate-shaped magnetic material is arranged by sandwiching the first heating coil and the second heating coil disposed on the other side with respect to the heated object by the heated object.

Moreover, in this invention, in the said invention, the said 1st heating coil is arrange | positioned at one side with respect to the to-be-heated thing, and the said 2nd heating coil is arrange | positioned at the other side with respect to the to-be-heated thing. will be.

In addition, in the above-described invention, the present invention is any one of the first heating coil disposed on one side with respect to the heated object or the second heating coil disposed on the other side with respect to the heated object. It is to arrange the plate-shaped magnetic material to be sandwiched by the heated object.

Moreover, in this invention, in the said invention, the 1st plate-shaped magnetic material is arrange | positioned so that the 1st heated coil arrange | positioned at one side with respect to the said to-be-heated object may be fitted by the said to-be-heated object, and the said to-be-heated object is heated The second plate-shaped magnetic material is arranged so as to sandwich the second heating coil disposed on the other side with respect to water by the heated object.

In addition, in the above invention, the plate-shaped magnetic material is disposed in the heated object by interposing one of the first heating coil and the second heating coil.

In addition, in the above invention, the first plate-shaped magnetic material is disposed with the first heating coil inserted into the heated object, and the second plate-shaped magnetic material is placed with the second heating coil inserted therein. I did it.

Since the present invention is constituted as described above, an increase in the weight of the apparatus as a whole is suppressed and an excellent effect of not excessively heating the edge portion of the object to be heated is exhibited.

1 is an explanatory view of an example of an induction heating apparatus having a conventional transverse coil.
2 (a) and 2 (b) are schematic structural explanatory diagrams of an induction heating apparatus according to an example of the embodiment of the present invention, and FIG. 2 (a) is a schematic structural explanatory diagram of the top surface, and FIG. It is a side schematic structure explanatory drawing seen from A of FIG.
3 is an explanatory view of the operation of the induction heating apparatus according to an example of the embodiment of the present invention shown in FIGS. 2A and 2B.
4 is an explanatory view of the operation of the induction heating apparatus according to an example of the embodiment of the present invention shown in FIGS. 2A and 2B.
Figure 5 shows another embodiment of the induction heating apparatus according to the present invention, is a schematic side schematic configuration corresponding to Figure 2 (b).
Figure 6 (a) is an explanatory view of an induction heating apparatus according to an example of the embodiment of the present invention shown in Figure 2 (a), Figure 6 (b) is another embodiment of the induction heating apparatus according to the present invention Fig. 2 is a schematic structural explanatory diagram corresponding to Fig. 2 (a).
Figure 7 shows another embodiment of the induction heating apparatus according to the present invention, is a schematic diagram illustrating the upper surface corresponding to Figure 2 (a).
8 (a) and 8 (b) are schematic structural explanatory diagrams of another embodiment of the induction heating apparatus according to the present invention, and FIG. 8 (a) is a schematic structural explanatory diagram of the top surface, and FIG. It is an explanatory drawing of the side schematic structure seen from B of (a).
9 (a) and 9 (b) are schematic structural explanatory diagrams of another embodiment of the induction heating apparatus according to the present invention, and FIG. 9 (a) is a schematic structural explanatory diagram of the top surface, and FIG. It is a side schematic structure explanatory drawing seen from C of (a).
Fig. 10 is a schematic structural explanatory diagram showing another embodiment of the induction heating apparatus according to the present invention, Fig. 10 (a) is a schematic schematic explanatory diagram of the top surface, and Fig. 10 (b) is at D in Fig. 10 (a). It is an explanatory drawing of this side schematic structure.
11 is a schematic structural explanatory diagram showing another embodiment of the induction heating apparatus according to the present invention.
12 is a schematic configuration explanatory diagram showing another embodiment of the induction heating apparatus according to the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in detail an example of an embodiment of the induction heating apparatus according to the present invention.

Here, FIG. 2 (a) and (b) show schematic structural explanatory drawing of the induction heating apparatus by an example of embodiment of this invention, FIG. 2 (a) is schematic top schematic structural explanatory drawing, FIG. 2 (b) is a schematic side view of the configuration seen from A of FIG. 2 (a).

The induction heating apparatus 10 shown in Figs. 2 (a) and 2 (b) is a guide connected to the high frequency power source 12 and one end 16a through a high frequency power source 12 and a feeder 14. The heating coil 18 provided with the substantially V-shaped part which forms the slide part 18a which slides on the guide 16 at the other end side, and forms the slide part 18b also at the other end side. ) And a guide portion 20a for guiding the slide portion 18b formed on the other end side of the heating coil 18 on one end side, and at the straight end 20b formed on the other end side. It is comprised with the heating coil 20 provided with the substantially M-shaped part connected with the high frequency power supply 12 via the feeder 22. As shown in FIG.

In addition, the guide part 16, the heating coil 18, and the heating coil 20 are formed with copper, for example, It is preferable to comprise with the same material.

More specifically, the above-described heating coil 18 and the heating coil 20 are heated with a substantially V-shaped portion of the heating coil 18 on the upper side of the conveying path 26 to which the thin plate-like heated object 24 is conveyed. The heating coil 18, the heating coil 20, and the conveyance path 26 are arrange | positioned so that each may be substantially parallel so that the substantially M shape part of the coil 20 may cross | intersect so that an electrical connection may be made.

Moreover, the heating coil 18 is arrange | positioned above the heating coil 20, and the thin plate-shaped to-be-heated material 24 is removed from the edge part 18aa of the slide part 18a, and the edge part 18ba of the slide part 18b. The bent part 18c extended toward the center axis O of the conveyance path 26 is formed in the front side of the conveyance direction conveyed, and the attachment part and the slide parts 18a and 18b which are located on the center axis O of the conveyance path 26 are carried out. ) Is formed on the same plane, forming a substantially V-shape as the whole heating coil 18.

On the other hand, the heating coil 20 conveys the thin plate-shaped to-be-heated object 24 from the other end 20aa of the guide part 20a, and the edge part 20ba of the straight part 20b arrange | positioned in the vicinity of the guide 16. The bent part 20c extended toward the center axis O of the conveyance path 26 is formed in the back side of a conveyance direction, and the attachment part, guide part 20a, and the linear part which are located on the center axis O of the conveyance path 26 are carried out. 20b is formed on the same plane, and forms almost an M shape as the whole heating coil 20. As shown in FIG.

In addition, the guide part 20a provided in the guide 16 and the heating coil 20 is comprised by predetermined length, and when the heating coil 18 moves, the slide part 18a provided in the heating coil 18 is moved. , 18b).

In the above configuration, a method of heating the thin plate-like heated object 24 using the induction heating device 10 will be described with reference to the operation explanatory diagrams shown in FIGS. 3 and 4.

That is, in order to heat the thin-plate-shaped to-be-heated object 24 using the induction heating apparatus 10, first, the heating coil 18 is moved to the front side or the back side of a conveyance direction by the moving means not shown, and heating The edge portion 24a of the thin plate-like to-be-heated object 24 whose positions of the point P and the point Q where the coil 18 and the heating coil 20 intersect are conveyed below the heating coil 18 and the heating coil 20. , 24b), so as to be located near each of them (see FIG. 3).

In addition, when the point P and the point Q are located in the vicinity of the edge part 24a, 24b, the point P and the edge part 24a oppose in the perpendicular direction of the paper surface in FIG. 1, and the point Q and the edge part 24b Is preferably adjusted to face in the vertical direction of the ground in FIG.

Specifically, in the induction heating apparatus 10, when heating the plate-shaped to-be-heated object 36 which is smaller than the thin plate-shaped to-be-heated object 24, the heating coil 18 is moved to the arrow B direction, and heating is carried out. The position of the point P and the point Q where the coil 18 and the heating coil 20 cross | intersect is adjusted to the position which opposes the edge parts 36a and 36b of the plate-shaped to-be-heated object 36, respectively (broken line in FIG. See).

In addition, in the induction heating apparatus 10, when heating the plate-shaped to-be-heated object 38 larger than the thin plate-shaped to-be-heated material 24, the heating coil 18 is moved to the arrow C direction, and a heating coil ( 18) and the position of the point P and the point Q where the heating coil 20 intersect is adjusted to the position which opposes the edge parts 38a and 38b of the plate-shaped to-be-heated object 38, respectively (one-dot chain line part in FIG. 4). See).

Thereafter, when a high frequency current is fed from the high frequency power supply 12 to the guide 16 via the feeder 14, the fed high frequency current is guided from the feeder 14 to the guide 16 as indicated by the arrows in FIG. It is fed to the heating coil 18 provided with the slide part 18a guided to the guide 16 from the guide 16 through the guide 16, and is further provided from the slide part 18b in the heating coil 18 from the slide part 18b. 18b) passes through the heating coil 20 provided with the guide portion 20a to return to the high frequency power supply 12 through the feeder 22 from the straight portion 20b of the heating coil 20, thereby heating the heating coil ( 18) and a high frequency current flows in the heating coil 20.

An approximately rectangular space formed by the approximately V-shaped portion of the heating coil 18 and the approximately M-shaped portion of the heating coil 20 by the flow of the high frequency current in the heating coil 18 and the heating coil 20. In S1, the magnetic flux is generated toward the rear surface from the surface of the ground in Fig. 3, and the generated magnetic flux passes through the thin plate-like heated object 24, whereby overcurrent is induced on the surface of the thin-plate heated object 24. The thin plate-like object to be heated 24 is heated.

Here, in general, as described in the above-described conventional technique, even if the width of the heating coil and the width of the plate-like heated object are the same, in the thin plate-like heated object 24 conveying the upper side or the lower side of the heating coil, The edge portion is overheated.

However, in the induction heating apparatus 10, by combining the heating coil 18 and the heating coil 20, the heating coil 18 and the heating coil 20 as well as the almost rectangular space S1 are not electrically connected. Almost triangular spaces S2 and S3 are formed in the area | region where the thin plate-shaped to-be-heated object 24 is not conveyed below the outer side of the substantially rectangular space S1 formed so that it may cross | intersect.

In these substantially triangular spaces S2 and S3, the magnetic flux is generated toward the surface from the back surface of the ground in FIG. 3 by the flow of the high frequency current, and the magnetic flux in the opposite direction to the magnetic flux generated in the space S1 is generated.

For this reason, in the vicinity of the edge parts 24a and 24b of the thin plate-shaped to-be-heated material 24 conveyed below the space Sl, the magnetic flux which is reverse to the magnetic flux which passes through the thin plate-shaped to-be-heated material 24 is produced | generated, A portion of the magnetic flux in the reverse direction passes through the edge portions 24a and 24b, and is different from the overcurrent induced in the thin heated object 24 at the edge portions 24a and 24b of the thin heated object 24. Since induction of reverse current is induced, overheating at the edge portions 24a and 24 can be suppressed.

As described above, in the induction heating apparatus 10, the substantially V-shaped heating coil 18 is slidably disposed on the M-shaped heating coil 20 to thereby provide a width of the thin plate-like heated object 24. According to this, the size of the space Sl formed by the heating coil 18 and the heating coil 20 can be adjusted, and the spaces S2 and S3 showing magnetic flux in the opposite direction to the magnetic flux generated by the space Sl adjacent to the space Sl are formed. Therefore, the reverse current is induced to the edge portions 24a and 24b of the thin plate-like object to be overheated by the magnetic flux generated by the space Sl, so that the edge portions 24a and 24b are not excessively heated. .

Therefore, the induction heating apparatus 10 can uniformly heat the plate-shaped heated object of various widths regardless of the magnetic material or the nonmagnetic material.

In addition, since the magnetic material is not used in the induction heating apparatus 10, the weight of the whole apparatus becomes lighter than the induction heating apparatus of the prior art which used many magnetic materials of the induction heating part.

Thereby, the cost in installing or transporting the induction heating apparatus can be reduced.

Next, another embodiment of the present invention is shown in the following (1) to (10).

(1) In the above-described embodiment, the heating coil 18 is moved by moving means, not shown, and the point P and the point Q, which are the intersection points of the heating coil 18 and the heating coil 20, are thin plate-shaped objects to be heated. Although it adjusted so that it may be located in the vicinity of the edge part 24a, 24b of 24, it is a thing of course not limited to this, For example, an operator moves the position of the heating coil 18 manually, and a heating coil You may make it adjust the position of the point P and the point Q which are the intersections of (18) and the heating coil 20.

(2) Although the heating coil 18 and the heating coil 20 are provided above the thin plate-shaped to-be-heated object 24 in the above-mentioned embodiment, it is a thing of course that is not limited to this. The heating coil 18 and the heating coil 20 may be provided below the 24.

In addition, as shown in FIG. 5, the heating coil 18 and the heating coil 20 may be provided on both the upper side and the lower side of the thin plate-like object to be heated 24.

(3) In the above-described embodiment, the heating coil 18 is arranged above the heating coil 20. However, of course, the heating coil 18 may be arranged below the heating coil 20. to be.

(4) In the above embodiment, the slide portion is provided in the heating coil 20 and the guide portion is provided in the heating coil 18, and the heating coil 20 guides the heating coil 18 and the guide 16. Of course, it is also good to move.

(5) In the above-described embodiment, as shown in Fig. 6 (a), the heating coil 18 and the heating coil 20 are bent at a predetermined position, and the configuration is provided so as to provide an attachment at the bent portion. Of course, it is not limited thereto. For example, as shown in FIG.6 (b), the bending part of the heating coil 18 and the heating coil 20 may be formed in the arc-shaped part comprised by the curve, and may not provide an attachment.

(6) In the above embodiment, only one set of the heating coil 18 and the heating coil 20 is provided on the upper side of the thin plate-like object to be conveyed 24, but of course, it is not limited thereto. As shown in FIG. 7, besides the heating coil 18 and the heating coil 20 above the thin plate-shaped to-be-heated material 24 conveyed, for example, the heating coil 18 and the heating coil 20 were each, for example. Corresponding heating coils 40 and heating coils 41 may be provided, and a plurality of baths of heating coils may be provided.

At this time, since the heating coil 18 and the heating coil 40 are integrally formed, and the high frequency power supply 12, the heating coil 20, and the heating coil 41 are connected, the guide 16 is removed. It is not prepared.

In addition, since the high-frequency current flowing through the heating coils 18, 20, 40, 41 flows as shown in FIG. 7, the space Sl formed by the heating coil 18 and the heating coil 20 is grounded in FIG. In the space S4 formed by the heating coil 40 and the heating coil 41 in the spaces S2 and S3, the magnetic flux is generated toward the surface in the spaces S2 and S3 in FIG. 7. The magnetic flux is generated from the rear surface of the ground toward the surface, and in the spaces S5 and S6, the magnetic flux is generated from the surface of the ground toward the rear surface in FIG.

Thus, by providing a plurality of tanks of a heating coil, the thin plate-shaped to-be-heated material 24 can be heated more efficiently.

(7) Although the heating coil 18 and the heating coil 20 were provided above the thin plate-shaped to-be-heated material 24 conveyed together in the above-mentioned embodiment, of course, it is not limited to this. For example, as shown in FIG. 8, when arranging the heating coil 18 and the heating coil 20, the heating coil 18 is provided above the thin plate-shaped to-be-heated material 24, and a heating coil is provided. 20 may be provided below the thin plate-shaped to-be-heated object 24, and the heating coil 18 and the heating coil 20 may be provided in the other side of the thin plate-shaped to-be-heated material 24 conveyed, respectively. .

(8) In the above-described embodiment, the heating coil 18 is formed so that the attachment and each slide portion positioned on the central axis O of the conveying path 26 are located on the same plane, and the heating coil 20 is conveyed to the conveying path 26. Although the attachment, the guide part 20a, and the straight part 20b which are located on the central axis O of the above-mentioned part are formed on the same plane, the present invention is not limited thereto, and as shown in FIG. 9, the heating coil 18 is not limited thereto. Is formed so that the attachment located on the central axis O of the conveying path 26 is located downward from each slide part, and the attachment positioned on the central axis O of the conveying path 26 is a guide part ( You may form so that it may be located below 20a) and the straight part 20b.

That is, the heating coil 18 is formed such that the attachment located near the center of the V-shaped portion is located in the vicinity of the thin plate-shaped heated object 24, and the heating coil 20 is attached near the center of the M-shaped portion. It is formed so that it may be located in the vicinity of the thin plate-shaped to-be-heated material 24.

(9) In the above-described embodiment, the induction heating apparatus 10 is configured without using a magnetic material. However, in order to heat efficiently, a magnetic material may be used.

That is, as shown in FIG. 10, you may arrange | position a plate-shaped magnetic material in the upper side of the heating coil 18 and the heating coil 20 located above the thin plate-shaped to-be-heated object 24. As shown in FIG. Thereby, the magnetic flux shown in the substantially rectangular space S1 formed by the substantially V-shaped portion of the heating coil 18 and the approximately M-shaped portion of the heating coil 20 can be concentrated by the magnetic material, and the heating efficiency can be improved. Can be. In the experiment by the present inventors, about 15% of heating efficiency could be raised.

In addition, when it is made to provide the heating coil 18 and the heating coil 20 below the thin plate-shaped to-be-heated thing 24, as described in (2) of another embodiment mentioned above, a thin plate-shaped to-be-heated thing What is necessary is just to arrange | position the plate-shaped magnetic material below the heating coil 18 and the heating coil 20 located below the 24.

In addition, when the heating coil 18 and the heating coil 20 are provided in the upper side and the lower side of the thin plate-shaped to-be-heated object 24, the heating coil located in the upper side of the thin plate-shaped to-be-heated object 24 is provided. 18 and a plate-shaped magnetic material on the upper side of the heating coil 20, and on the lower side of the heating coil 18 and the heating coil 20 positioned below the thin plate-like object 24. What is necessary is just to provide a plate-shaped magnetic material.

That is, a plate-shaped magnetic material is arrange | positioned so that the heating coil 18 and the heating coil 20 may be fitted with the thin plate-shaped to-be-heated material 24. FIG.

In addition, as described in (7) of the above-described embodiment, the heating coil 18 is disposed above the thin plate-like heated object 24, and the heating coil ( When 20) is arranged, the plate-shaped magnetic material may be arranged above the heating coil 18, or the plate-shaped magnetic material may be arranged below the heating coil 20, or the heating coil. You may arrange | position a plate-shaped magnetic material on the upper side of (18), and arrange | position a plate-shaped magnetic material below the heating coil 20. FIG.

In addition, when the heating coil 20 is arrange | positioned above the thin plate-shaped to-be-heated thing 24, and the heating coil 18 is arrange | positioned below the thin plate-shaped to-be-heated thing 24, The plate-shaped magnetic material may be arranged above, the plate-shaped magnetic material may be arranged below the heating coil 18, or the plate-shaped magnetic material may be arranged above the heating coil 20. At the same time, a plate-shaped magnetic material may be disposed below the heating coil 18.

In addition, such a plate-shaped magnetic material may be divided into the width direction of the thin plate-shaped to-be-heated material 24, and it may be able to adjust the position of the width direction, respectively.

In addition, as described in (6) of another embodiment described above, when two baths of heating coils shown in FIG. 7 are provided, a plate-shaped magnetic material is provided as shown in FIGS. 11 and 12. It is good to arrange, and it becomes possible to heat the thin plate-shaped to-be-heated object 24 more efficiently.

That is, in FIG. 11, a magnetic plate-shaped magnetic material to be spread from the attachment of the heating coil 18 to the attachment located on the rear side of the heating coil 41 is arranged. In FIG. 12, the heating coil 18 and the heating coil are arranged. A plate-shaped magnetic material is disposed from a straight line connecting point P and point Q where (20) intersects, and a straight line connecting point P 'and point Q' where heating coil 40 and heating coil 41 intersect. have.

When two tanks of such heating coils are provided, one tank of heating coils is used. When the tanks of the heating coils are positioned above the thin plate-like material to be heated 24, a plate-shaped plate is placed above the heating coils. The magnetic material is disposed, and when the bath of the heating coil is located below the thin plate-shaped to-be-heated material 24, the plate-shaped magnetic material is disposed below the heating coil.

Moreover, when the tank of a heating coil is located in the upper side and the lower side of the thin plate-shaped to-be-heated object 24, the plate-shaped magnetic material is arrange | positioned above the tank of the heating coil located to the upper side of the thin plate-shaped to-be-heated material 24. At the same time, a plate-shaped magnetic material may be disposed below the tank of the heating coil positioned below the thin plate-like object to be heated 24.

That is, the plate-shaped magnetic material is arranged so that the bath coil of the heating coil is sandwiched by the thin plate-like object to be heated 24.

On the other hand, the bath coil of the heating coil is provided on the upper side and the lower side of the thin plate-shaped to-be-heated object 24, and is shown in FIG. 11 or FIG. When the plate-shaped magnetic material is disposed as shown, and the plate-shaped magnetic material is disposed as shown in Fig. 11 or 12 below the tank of the heating coil positioned below the thin plate-like object to be heated 24. The magnetic flux is formed by the magnetic material located above and below the water 24, and the thin plate-like heated object 24 can be heated more efficiently.

In addition, as in the case of combining (6) and (7) of the above-described other embodiments, the heating coil 18 and the heating coil 40 are disposed on the upper side of the thin plate-like object to be heated 24, and the thin plate shape When the heating coil 20 and the heating coil 41 are arrange | positioned below the to-be-heated material 24, even if it is made to arrange a plate-shaped magnetic material above the heating coil 18 and the heating coil 40, The plate-shaped magnetic material may be disposed below the heating coil 20 and the heating coil 41, or the plate-shaped magnetic material may be disposed above the heating coil 18 and the heating coil 40. At the same time, a plate-shaped magnetic material may be disposed below the heating coil 20 and the heating coil 41.

In addition, the heating coil 20 and the heating coil 41 are disposed above the thin plate-like object 24, and the heating coil 18 and the heating coil 40 are disposed below the plate-like object 24. When arranged, the plate-shaped magnetic material may be arranged above the heating coil 20 and the heating coil 41, and the plate-shaped magnetic material is placed below the heating coil 18 and the heating coil 40. Alternatively, the plate-shaped magnetic material may be disposed above the heating coil 20 and the heating coil 41, and the plate-shaped magnetic material may be placed below the heating coil 18 and the heating coil 40. It may be arranged.

On the other hand, such a plate-shaped magnetic material may be divided in the width direction of the thin plate-like object to be heated 24 so that the position in the width direction can be adjusted.

Thus, by using a plate-shaped magnetic material, the thin plate-like to-be-heated object 24 can be heated more efficiently, without excess heating of an edge part.

On the other hand, since a part of the plate-shaped magnetic material is used, the weight of the whole apparatus is increased as compared with the induction heating apparatus described in Figs. 2 and 7, but the configuration of the induction heating portion is almost made of the magnetic material. Compared with the induction heating apparatus according to the prior art, the weight of the entire apparatus becomes sufficiently light.

(10) Said embodiment and embodiment shown to said (1)-(9) may be combined suitably.

This invention is suitable to employ | adopt when heating a plate-shaped to-be-heated object, especially a thin plate-shaped to-be-heated thing.

10: induction heating device 12: high frequency power
14: Feeder 16: Guide
16a: end 18: heating coil
18a: slide portion 18aa: end portion
18b: Slide section 18ba: End
18c: bend 20: heating coil
20a: guide portion 20aa: end portion
20b: straight portion 20ba: end portion
20c: bend 22: feeder
24: thin plate-like heated object 24a, 24b: edge portion
26: conveying path 36: thin plate-like heated object
36a, 36b: edge portion 38: thin plate-like object to be heated
38a, 38b: edge portion 40, 41: heating coil

Claims (20)

In an induction heating apparatus for supplying a high frequency current to the heating coil to induction heating the thin plate-like object to be heated,
A first heating coil for feeding a high frequency current,
With a second heating coil for feeding a high frequency current,
The first heating coil has a V-shaped portion,
The second heating coil has an M-shaped portion,
And the first heating coil so that a rectangular space is formed in the vicinity of an edge portion of the thin plate-like heated object so that the V-shaped portion of the first heating coil and the M-shaped portion of the second heating coil are not electrically connected. Arranging the second heating coils in parallel,
The first heating coil and the second heating coil are arranged on one side with respect to the thin plate-shaped object to be heated,
The plate-shaped magnetic material is disposed by sandwiching the first heating coil and the second heating coil disposed on one side of the thin plate-like object to be heated by the thin plate-like object,
At least one of the first heating coil and the second heating coil is free to move in the parallel direction along the width of the thin plate-shaped object to be heated,
The triangular space is intersected so that the first heating coil and the second heating coil are not electrically connected to the outside of the rectangular space formed by crossing the first heating coil and the second heating coil so as not to be electrically connected. Forming,
Induction heating apparatus, characterized in that the direction of the magnetic flux generated by the high frequency current is reversed in the rectangular space and the triangular space. In an induction heating apparatus for supplying a high frequency current to the heating coil to induction heating the thin plate-like object to be heated,
A first heating coil for feeding a high frequency current,
With a second heating coil for feeding a high frequency current,
The first heating coil has a V-shaped portion,
The second heating coil has an M-shaped portion,
And the first heating coil so that a rectangular space is formed in the vicinity of an edge portion of the thin plate-like heated object so that the V-shaped portion of the first heating coil and the M-shaped portion of the second heating coil are not electrically connected. Arranging the second heating coils in parallel,
The first heating coil and the second heating coil are disposed on both sides of one side and the other side of the thin plate-shaped object to be heated, respectively.
The first plate-shaped magnetic material is disposed by sandwiching the first heating coil and the second heating coil disposed on one side of the thin plate-shaped object to be heated by the thin plate-shaped object.
Arranging a second plate-shaped magnetic material by sandwiching the first heating coil and the second heating coil disposed on the other side with respect to the thin plate-like object to be heated by the thin plate-like object,
At least one of the first heating coil and the second heating coil is free to move in the parallel direction along the width of the thin plate-shaped object to be heated,
In each of the said one side and the other side with respect to the said thin plate-shaped to-be-heated object, the said outer side of the said rectangular space formed so that the said 1st heating coil and the said 2nd heating coil may cross | intersect so that it may not make electrical connection, The said The first heating coil and the second heating coil to cross the electrical connection so as not to form a triangular space,
In each of said one side and said other side with respect to the said thin plate-shaped to-be-heated object, the direction of the magnetic flux which arises by a high frequency electric current is reversed in the said rectangular space and the said triangular space, The induction heating characterized by the above-mentioned. Device. In an induction heating apparatus for supplying a high frequency current to the heating coil to induction heating the thin plate-like object to be heated,
A first heating coil for feeding a high frequency current,
With a second heating coil for feeding a high frequency current,
The first heating coil has a V-shaped portion,
The second heating coil has an M-shaped portion,
And the first heating coil so that a rectangular space is formed in the vicinity of an edge portion of the thin plate-like heated object so that the V-shaped portion of the first heating coil and the M-shaped portion of the second heating coil are not electrically connected. Arranging the second heating coils in parallel,
The first heating coil is disposed on one side with respect to the thin plate-like object to be heated, and the second heating coil is disposed on the other side with respect to the thin plate-shaped object to be heated,
Any one of the first heating coil disposed on one side of the thin plate-like object to be heated or the second heating coil disposed on the other side of the thin plate-like object to be fitted is fitted by the thin plate-like object. To arrange the plate-shaped magnetic material,
At least one of the first heating coil and the second heating coil is free to move in the parallel direction along the width of the thin plate-shaped object to be heated,
The triangular space is intersected so that the first heating coil and the second heating coil are not electrically connected to the outside of the rectangular space formed by crossing the first heating coil and the second heating coil so as not to be electrically connected. Forming,
Induction heating apparatus, characterized in that the direction of the magnetic flux generated by the high frequency current is reversed in the rectangular space and the triangular space. In an induction heating apparatus for supplying a high frequency current to the heating coil to induction heating the thin plate-like object to be heated,
A first heating coil for feeding a high frequency current,
With a second heating coil for feeding a high frequency current,
The first heating coil has a V-shaped portion,
The second heating coil has an M-shaped portion,
And the first heating coil so that a rectangular space is formed in the vicinity of an edge portion of the thin plate-like heated object so that the V-shaped portion of the first heating coil and the M-shaped portion of the second heating coil are not electrically connected. Arranging the second heating coils in parallel,
The first heating coil is disposed on one side with respect to the thin plate-like object to be heated, and the second heating coil is disposed on the other side with respect to the thin plate-shaped object to be heated,
The first plate-shaped magnetic material is disposed by sandwiching the first heating coil disposed on one side of the thin plate-like object to be heated by the thin plate-like object to be heated,
Arranging a second plate-shaped magnetic material by sandwiching the second heating coil disposed on the other side with respect to the thin plate-like object to be heated by the thin plate-shaped object to be heated,
At least one of the first heating coil and the second heating coil is free to move in the parallel direction along the width of the thin plate-shaped object to be heated,
The triangular space is intersected so that the first heating coil and the second heating coil are not electrically connected to the outside of the rectangular space formed by crossing the first heating coil and the second heating coil so as not to be electrically connected. Forming,
Induction heating apparatus, characterized in that the direction of the magnetic flux generated by the high frequency current is reversed in the rectangular space and the triangular space. The method according to any one of claims 1, 3, and 4,
The first heating coil and the second heating coil is freely in contact with movement at one end,
Induction heating apparatus, characterized in that the first heating coil and the second heating coil is the other end is connected to the feed line of the high frequency current. The method of claim 2,
On one side with respect to the said thin plate-shaped to-be-heated object, the said 1st heating coil and the said 2nd heating coil are freely contacted by the movement in one end part,
On one side of the thin plate-like object to be heated, the first heating coil and the second heating coil have opposite ends connected to feed lines of high frequency current, respectively.
On the other side with respect to the said thin plate-shaped to-be-heated object, the said 1st heating coil and the said 2nd heating coil are freely contacted by the movement at one end part,
Induction heating apparatus, characterized in that the other end of the first heating coil and the second heating coil is connected to the feed line of the high frequency current on the other side of the thin plate-shaped object to be heated. The method according to any one of claims 1, 2, 3, 4, and 6,
The bent portion of the V-shaped portion of the first heating coil has an arc shape formed by a curve,
Induction heating apparatus, characterized in that the bent portion of the M-shaped portion of the second heating coil has an arc shape formed by a curve. The method according to any one of claims 1, 2, 3, 4, and 6,
The bent portion located in the center of the V-shaped portion in the first heating coil is formed to be located in the vicinity of the thin plate-like object to be heated in the first heating coil,
An induction heating apparatus, characterized in that the bent portion located in the center of the M-shaped portion of the second heating coil is located in the vicinity of the thin plate-shaped object to be heated in the second heating coil. In an induction heating apparatus for induction heating a thin plate-like object to be heated by feeding a high frequency current to the heating coil,
2 sets of tanks which consist of a 1st heating coil and a 2nd heating coil in the induction heating apparatus in any one of Claims 1, 2, 3, 4, and 6,
Induction heating apparatus characterized in that for feeding the high frequency current so that the direction of the magnetic field generated by each of the two pairs to be opposite to each other. delete delete delete delete delete delete delete delete delete delete delete

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