Electromagnetic induction coil based on electromagnetic induction heating and heating device

Abstract

The utility model relates to an electromagnetic induction coil based on electromagnetic induction heating and a heating device, the electromagnetic induction coil comprises a plurality of splicing strips, the adjacent splicing strips are spliced together end to end, the splicing body is spiral, and the cross section of the splicing body is round, oval or square. The design formed by splicing the splicing strips has the advantages that the coil manufacturing is simpler and more efficient; meanwhile, the splicing strips can be increased or decreased according to requirements, and flexibility is high; and when the coil is locally damaged, only the damaged part needs to be replaced, so that the maintenance time and cost are saved. The heating device comprises a first protective shell and a second protective shell, a splicing strip on the upper side of the electromagnetic induction coil is arranged in the first protective shell, a splicing strip on the lower side of the electromagnetic induction coil is arranged in the second protective shell, and a connecting strip is located outside the first protective shell and the second protective shell, so that splicing is convenient, and the splicing strips are also convenient to increase and decrease; the splicing strip is isolated and protected by the first protective shell and the second protective shell, and a to-be-heated object is placed between the first protective shell and the second protective shell to be heated, so that the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic induction heating equipment, in particular to an electromagnetic induction coil and a heating device based on electromagnetic induction heating. Background Art

[0002] Electromagnetic induction heating is a technology that uses the principle of electromagnetic induction for heating. It generates an alternating magnetic field around the object to be heated, thereby generating eddy currents or Joule heat inside the object to achieve the purpose of heating.

[0003] The induction coils for electromagnetic induction heating are usually manufactured with specific molds according to design requirements and coiled manually. To match the power, frequency, and number of turns of the induction coil, skilled operators are usually required for production, which results in low production efficiency and high costs. In addition, since the coil is a whole, its number of turns cannot be flexibly adjusted, thus limiting its convenience of use.

[0004] In high-power electromagnetic induction heating equipment, when a large current passes through the induction coil, the coil will heat up. To reduce the temperature, the induction coil is usually wound with copper tubes and cooled by passing cooling water. However, this approach often leads to scaling on the inner wall of the induction coil, which in turn causes local damage to the coil, or in cold regions, the induction coil is locally frozen and cracked. Since the wall thickness of the copper tube is usually only 1.5 - 2 mm, it is difficult to weld and repair, and the coil must be removed as a whole, which not only takes time and affects production, but also wastes materials. Summary of the Utility Model

[0005] Therefore, the present utility model provides an electromagnetic induction coil based on electromagnetic induction heating, which mainly solves the problems of low production efficiency, high production cost, inability to flexibly adjust the number of turns, and low convenience of use in the manufacture of electromagnetic heating induction coils in the prior art.

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] The electromagnetic induction coil based on electromagnetic induction heating includes a plurality of splicing strips; adjacent splicing strips are spliced end to end; the splicing body of the plurality of splicing strips is spiral, and its cross-section is circular, or oval, or square.

[0008] Optionally, adjacent splicing strips are spliced end to end through a connecting strip.

[0009] Preferably, the connecting strip is U-shaped; the connecting strip is provided with a connecting plate for limiting and supporting the connecting strip.

[0010] Preferably, the splicing bars and the connecting bars are all copper tubes; the head end of the first splicing bar is the water inlet for injecting cooling water; the tail end of the last splicing bar is the water outlet for discharging cooling water.

[0011] Preferably, the splicing bar is a rectangular copper tube.

[0012] Furthermore, the present application also proposes a heating device based on electromagnetic induction heating, including the aforementioned electromagnetic induction coil; it also includes a first protective shell and a second protective shell; both the left and right sides of the first protective shell are provided with first placement parts; both the left and right sides of the second protective shell are provided with second placement parts; a first support is provided at the bottom of the second placement part on the left side of the second protective shell, and a second support is provided at the bottom of the second placement part on the right side for supporting the second protective shell; the first placement part of the first protective shell is placed on the second placement part of the second protective shell; the shapes of the first protective shell and the second protective shell are the same as the shape of the splicing bar; the splicing bar on the upper side of the electromagnetic induction coil is arranged inside the first protective shell; the splicing bar on the lower side of the electromagnetic induction coil is arranged inside the second protective shell.

[0013] Preferably, a support block is provided between the first placement part of the first protective shell and the second placement part of the second protective shell.

[0014] Optionally, both the first protective shell and the second protective shell are made of refractory fireclay; the support block is made of epoxy resin.

[0015] Preferably, a third support is provided at the bottom of the second protective shell.

[0016] Optionally, both the first protective shell and the second protective shell are composed of multiple protective bars; each protective bar includes a protective bar body; both the left and right sides of the protective bar body are provided with protective bar placement parts; the protective bar placement parts of multiple protective bars form the first placement part or the second placement part; a through accommodation hole is provided in the protective bar for placing the splicing bar.

[0017] The present utility model has at least the following beneficial effects:

[0018] The electromagnetic induction coil of the present application includes multiple splicing bars, and adjacent splicing bars are spliced end to end. The splicing body of multiple splicing bars is spiral, and its cross-section is circular, or oval, or square. The electromagnetic coil of the present application is changed from being conventionally wound to being spliced by multiple splicing bars, improving the manufacturing flexibility, and the coil manufacturing is simpler and more efficient; secondly, the spliced splicing bars can be increased or decreased according to needs, increasing the usage flexibility; finally, when a part of the coil is damaged, only the damaged part of the splicing bar can be replaced instead of the whole being removed and replaced, saving maintenance time, not causing material waste, and saving costs.

[0019] Further, for the first protective shell and the second protective shell of the heating device of the present application, the splicing strip on the upper side of the electromagnetic induction coil is arranged inside the first protective shell, and the splicing strip on the lower side of the electromagnetic induction coil is arranged inside the second protective shell. The connecting strip is outside the first protective shell and the second protective shell, which facilitates the splicing of the splicing strips and also facilitates the addition or subtraction of the splicing strips according to requirements. The first protective shell and the second protective shell isolate and protect the splicing strips, and the item to be heated is placed between the first protective shell and the second protective shell for heating, improving safety. Description of the Drawings

[0020] In order to more clearly illustrate the prior art and the present invention, the following will briefly introduce the drawings required for describing the prior art and the embodiments of the present invention. Obviously, the drawings described below are only exemplary, and those of ordinary skill in the art can also obtain other drawings based on the provided drawings without creative efforts.

[0021] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0022] Figure 1 It is a schematic structural diagram of an electromagnetic induction coil based on electromagnetic induction heating of the present invention;

[0023] Figure 2 It is an enlarged partial view of part A of the electromagnetic induction coil based on electromagnetic induction heating of the present invention Figure 1 of;

[0024] Figure 3 It is an enlarged partial view of part B of the electromagnetic induction coil based on electromagnetic induction heating of the present invention Figure 1 of;

[0025] Figure 4 It is a schematic diagram of the splicing state of adjacent splicing strips of the electromagnetic induction coil based on electromagnetic induction heating of the present invention;

[0026] Figure 5 It is an enlarged partial view of part C of the electromagnetic induction coil based on electromagnetic induction heating of the present invention Figure 4 of;

[0027] Figure 6 It is a schematic structural diagram of a heating device based on electromagnetic induction heating of the present invention;

[0028] Figure 7Attached to the heating device based on electromagnetic induction heating of the present utility model Figure 6 Partial enlarged view of part D;

[0029] Figure 8 Attached to the heating device based on electromagnetic induction heating of the present utility model Figure 6 Partial enlarged view of part E;

[0030] Figure 9 Schematic structural view of the protective strip of the heating device based on electromagnetic induction heating of the present utility model;

[0031] Explanation of reference numerals:

[0032] 1. splicing strip; 2. connecting strip; 3. water inlet; 4. water outlet; 5. connecting plate; 6. first protective shell; 601. first placement part; 7. second protective shell; 701. second placement part; 8. support block; 9. first bracket; 10. second bracket; 11. third bracket; 12. protective strip; 1201. protective strip body; 1202. accommodation hole; 1203. protective strip placement part. Detailed implementation manners

[0033] The following further details the present application through specific embodiments in conjunction with the accompanying drawings.

[0034] In the description of the present application: Unless otherwise specified, "a plurality of" means two or more. Terms such as "first", "second", "third", etc. in the present application are intended to distinguish the objects being referred to, and do not have special significance in terms of technical connotations (for example, they should not be understood as emphasizing importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0035] Terms such as "upper", "lower", "left", "right", "middle", etc. cited in the present application are usually for facilitating intuitive understanding with reference to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Without departing from the technical concept disclosed in the present application, changes in these relative positional relationships should also be regarded as falling within the scope of the present application's description.

[0036] The electromagnetic induction coil based on electromagnetic induction heating of the present utility model, such as Figures 1 to 5As shown, multiple splicing bars 1 are provided. The adjacent splicing bars 1 are spliced end to end. The spliced body of the multiple splicing bars 1 is spiral, and its cross-section is circular, or oval, or square. In this way, when manufacturing an electromagnetic induction coil, the traditional winding method is changed to splicing by multiple splicing bars 1, which improves the manufacturing flexibility and makes the coil manufacturing simpler and more efficient. Secondly, the spliced splicing bars 1 can be increased or decreased according to requirements, increasing the flexibility of use. Finally, when a part of the coil is damaged, only the damaged part of the splicing bar 1 needs to be replaced, instead of the whole being removed and replaced, saving maintenance time, not causing material waste, and saving costs.

[0037] Preferably, to facilitate the installation and splicing of each splicing bar 1 together and also facilitate the removal of the spliced body 1, a connecting bar 2 is also provided. The adjacent splicing bars 1 are spliced end to end through the connecting bar 2.

[0038] Preferably, to further facilitate the installation and splicing between the splicing bars 1, the connecting bar 2 is designed in a U shape. At the same time, to enhance the strength of the connecting bar 2 and enhance the stable connection to the splicing bars 1, a connecting plate 5 is provided on the connecting bar 2. One end of the connecting plate 5 is connected to one side of the connecting bar 2, and the other end of the connecting plate 5 is connected to the other side of the connecting bar 2.

[0039] Preferably, to cool the induction coil to be applicable to high-power electromagnetic induction heating equipment, both the splicing bar 1 and the connecting bar 2 are selected as copper tubes. The head end of the first splicing bar 1 is the water inlet 3 for injecting cooling water, and the tail end of the last splicing bar 1 is the water outlet 4 for discharging cooling water. Of course, the head end of the first splicing bar 1 can also be the water outlet 4, and the tail end of the last splicing bar 1 can be the water inlet 3.

[0040] Preferably, the splicing bar 1 is a rectangular copper tube. The induction coil spliced by the rectangular copper tubes can increase the heating area and improve the heating efficiency of the product. The rectangular coil is also easier to change the emission flow and reduce energy consumption.

[0041] Furthermore, the present application also proposes a heating device based on electromagnetic induction heating, such as Figures 6 to 9As shown in the figure, the aforementioned electromagnetic induction coil is provided, and a first protective shell 6 and a second protective shell 7 are also provided. First placement parts 601 are provided on both the left and right sides of the first protective shell 6, and the first placement parts 601 are integrally formed with the first protective shell 6; second placement parts 701 are provided on both the left and right sides of the second protective shell 7, and the second placement parts 701 are integrally formed with the second protective shell 7. A first support 9 is provided at the bottom of the second placement part 701 on the left side of the second protective shell 7, and a second support 10 is provided at the bottom of the second placement part 701 on the right side, for supporting the second protective shell 7. Place the first placement part 601 of the first protective shell 6 on the second placement part 701 of the second protective shell 7. The shapes of the first protective shell 6, the second protective shell 7 and the splicing strip 1 are the same. The splicing strip 1 on the upper side of the electromagnetic induction coil is arranged in the first protective shell 6, and the splicing strip 1 on the lower side of the electromagnetic induction coil is arranged in the second protective shell 7. The connecting strip 2 is outside the first protective shell 6 and the second protective shell 7, which is convenient for splicing the splicing strip 1 and also convenient for increasing or decreasing the splicing strip 1 according to requirements. The first protective shell 6 and the second protective shell 7 isolate and protect the splicing strip 1, and the item to be heated is placed between the first protective shell 6 and the second protective shell 7 for heating, improving safety.

[0042] Preferably, to prevent the first protective shell 6 and the second protective shell 7 from being squeezed and deformed due to thermal expansion during heating, a support block 8 is provided between the first placement part 601 of the first protective shell 6 and the second placement part 701 of the second protective shell 7. The support block 8 has flexibility and can prevent the first protective shell 6 and the second protective shell 7 from being squeezed and deformed due to thermal expansion.

[0043] Optionally, a preferred manufacturing material for the first protective shell 6, the second protective shell 7 and the support block 8 is given in the embodiment of the present application. Specifically: both the first protective shell 6 and the second protective shell 7 are made of refractory mortar, and the support block 8 is made of epoxy resin.

[0044] Preferably, to enhance the support for the heating device of the present application, a third support 11 is provided at the bottom of the second protective shell 7.

[0045] Optionally, a preferred structure of the first protective shell 6 and the second protective shell 7 is given in the embodiment of the present application. Specifically: both the first protective shell 6 and the second protective shell 7 are composed of a plurality of protective strips 12. The protective strip 12 includes a protective strip body 1201, and protective strip placement parts 1203 are provided on both the left and right sides of the protective strip body 1201. The protective strip placement parts 1203 of the plurality of protective strips 12 form the first placement part 601 or the second placement part 701. The protective strip 12 is provided with a through accommodating hole 1202 for placing the splicing strip 1.

[0046] In the above text, the present application has been described in a relatively specific and detailed manner through general descriptions and specific embodiments. It should be understood that based on the technical concept of the present application, several conventional adjustments or further innovations can also be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained from these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. An electromagnetic induction coil based on electromagnetic induction heating, characterized in that, It includes multiple splicing bars (1); the adjacent splicing bars (1) are spliced end to end; the splicing body of the multiple splicing bars (1) is spiral, and its cross-section is circular, or oval, or square.

2. The electromagnetic induction coil based on electromagnetic induction heating according to claim 1, wherein The adjacent splicing bars (1) are spliced end to end through a connecting bar (2).

3. The electromagnetic induction coil based on electromagnetic induction heating according to claim 2, characterized in that, The connecting bar (2) is U-shaped; the connecting bar (2) is provided with a connecting plate (5) for limiting and supporting the connecting bar (2).

4. The electromagnetic induction coil based on electromagnetic induction heating according to claim 3, characterized in that, Both the splicing bar (1) and the connecting bar (2) are copper pipes; the head end of the first splicing bar (1) is a water inlet (3) for injecting cooling water; the tail end of the last splicing bar (1) is a water outlet (4) for discharging cooling water.

5. The electromagnetic induction coil based on electromagnetic induction heating according to claim 4, wherein The splicing bar (1) is a rectangular copper pipe.

6. Heating device based on electromagnetic induction heating, characterized in that It includes the electromagnetic induction coil according to any one of claims 1 to 5; it further includes a first protective shell (6) and a second protective shell (7); both the left and right sides of the first protective shell (6) are provided with first placement parts (601); both the left and right sides of the second protective shell (7) are provided with second placement parts (701); the bottom of the second placement part (701) on the left side of the second protective shell (7) is provided with a first bracket (9), and the bottom of the second placement part (701) on the right side of the second protective shell (7) is provided with a second bracket (10) for supporting the second protective shell (7); the first placement part (601) of the first protective shell (6) is placed on the second placement part (701) of the second protective shell (7); the shapes of the first protective shell (6) and the second protective shell (7) are the same as the shape of the splicing bar (1); the splicing bar (1) above the electromagnetic induction coil is arranged in the first protective shell (6); the splicing bar (1) below the electromagnetic induction coil is arranged in the second protective shell (7).

7. The heating device based on electromagnetic induction heating according to claim 6, wherein, A support block (8) is arranged between the first placement part (601) of the first protective shell (6) and the second placement part (701) of the second protective shell (7).

8. The heating device based on electromagnetic induction heating according to claim 7, characterized in that, Both the first protective shell (6) and the second protective shell (7) are made of refractory mortar; the support block (8) is made of epoxy resin.

9. The heating device based on electromagnetic induction heating according to claim 6, wherein, The bottom of the second protective shell (7) is provided with a third bracket (11).

10. The heating device based on electromagnetic induction heating according to claim 6, wherein Both the first protective shell (6) and the second protective shell (7) are composed of multiple protective bars (12); the protective bar (12) includes a protective bar body (1201); both the left and right sides of the protective bar body (1201) are provided with protective bar placement parts (1203); the protective bar placement parts (1203) of the multiple protective bars (12) form the first placement part (601) or the second placement part (701); the protective bar (12) is provided with a through accommodation hole (1202) for placing the splicing bar (1).

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