Variable grouping induction coil and induction heating furnace

Abstract

The utility model is suitable for the technical field of induction coils, and provides a variable grouping induction coil and an induction heating furnace. The variable grouping induction coil comprises an induction coil, a change-over switch and a power supply; the number of the induction coils is N, and the number of the change-over switches is N-1. One power connection point of the first turn of induction coil and one power connection point of the Nth turn of induction coil are respectively connected with two poles of the power supply, and the rest power connection points of the induction coils are sequentially connected with switching points of the (N-1) selector switches in a staggered manner; the switching mode of the change-over switch is that the two switching points of each switch are connected with each other and / or the two switching points of each switch are connected with each other. According to the utility model, various induction heating modes can be realized through the combination of the change-over switch, so that the distribution of an induction electromagnetic field is changed, the heating energy of different parts is adjusted, the heating efficiency is improved, and the device has very important significance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to induction coil technical field especially relates to a variable grouping induction coil and induction heating furnace. BACKGROUND

[0002] Electromagnetic induction heating technology utilizes the changing magnetic field to generate eddy current in the conductive material, and then converts the electric energy into heat energy through the material's own resistance to achieve the purpose of heating. This process is based on Faraday's law of electromagnetic induction, and has the advantages of high heating efficiency, precise temperature control, non-contact heating, environmental protection and energy saving, and good safety. It is widely used in metal smelting, welding, heat treatment, plastic heating forming and other industrial fields, and is an indispensable high-efficiency heating technology in modern manufacturing industry.

[0003] However, the existing electromagnetic induction heating furnace has a single heating mode, and it is difficult to adjust the gear position of heating and different parts of the heating furnace body, and the energy utilization rate is low. UTILITY MODEL CONTENTS

[0004] The purpose of the utility model embodiment is to provide a variable grouping induction coil, which aims to solve the problem of single heating mode and low energy utilization rate of the existing electromagnetic induction heating furnace.

[0005] The utility model embodiment is realized in this way, a variable grouping induction coil, the variable grouping induction coil includes induction coil, switch and power supply;

[0006] The induction coil is sequentially provided with N turns, and the switch is sequentially provided with N-1 turns; One of the first turn induction coil and one of the Nth turn induction coil are respectively connected to the two poles of the power supply, and the remaining connection points of the induction coil are sequentially connected to the switching points of the N-1 switches;

[0007] The switching mode of the switch is that the two switching points of each switch are connected to each other and / or the two switching points of each switch are connected respectively.

[0008] Further, N is 4;

[0009] The induction coil includes a first coil, a second coil, a third coil and a fourth coil, and the switch includes a first switch, a second switch and a third switch;

[0010] The first coil is provided with a first connection point and a second connection point, the second coil is provided with a third connection point and a fourth connection point, the third coil is provided with a fifth connection point and a sixth connection point, and the fourth coil is provided with a seventh connection point and an eighth connection point;

[0011] The first switch sets a first switching point and a second switching point, the second switch sets a third switching point and a fourth switching point, and the third switch sets a fifth switching point and a sixth switching point.

[0012] The power supply is provided with a first electrode and a second electrode.

[0013] The first connection point is connected to the second electrode, the second connection point is connected to the second switching point, the third connection point is connected to the first switching point, the fourth connection point is connected to the fourth switching point, the fifth connection point is connected to the third switching point, the sixth connection point is connected to the sixth switching point, the seventh connection point is connected to the fifth switching point, and the eighth connection point is connected to the first electrode.

[0014] The switching mode of the first switch, the second switch, and the third switch can be: the two switching points of each switch are connected to each other, and / or the two switching points of each switch are connected to the first electrode and the second electrode, respectively.

[0015] Further, in the first heating mode, the first connection point is connected to the second electrode, the eighth connection point is connected to the first electrode, the first switching point is connected to the second switching point, the third switching point is connected to the fourth switching point, and the fifth switching point is connected to the sixth switching point.

[0016] Further, in the second heating mode, the first connection point and the third switching point are connected to the second electrode, the eighth connection point and the fourth switching point are connected to the first electrode, the first switching point is connected to the second switching point, and the fifth switching point is connected to the sixth switching point.

[0017] Further, in the third heating mode, the first connection point, the first switching point, the third switching point, and the fifth switching point are connected to the second electrode, the eighth connection point, the second switching point, the fourth switching point, and the sixth switching point are connected to the first electrode, the first switching point is connected to the second switching point, the third switching point is connected to the fourth switching point, and the fifth switching point is connected to the sixth switching point.

[0018] Further, in the fourth heating mode, the first connection point, the first switching point, the third switching point, and the fifth switching point are connected to the second electrode, and the eighth connection point, the second switching point, the fourth switching point, and the sixth switching point are connected to the first electrode.

[0019] Further, in the fifth heating mode, the first power connection point, the first switching point, the third switching point and the fifth switching point are connected to the second electrode, the eighth power connection point, the second switching point, the fourth switching point and the sixth switching point are connected to the first electrode, the first switching point is connected to the second switching point, and the fifth switching point is connected to the sixth switching point.

[0020] The utility model embodiment still has another purpose, a kind of induction heating furnace, the induction heating furnace includes:

[0021] Furnace body, for heating;

[0022] The variable grouping induction coil, the induction coil is sleeved on the outside of the furnace body.

[0023] Further, the furnace body includes:

[0024] Heat preservation bucket, outside is provided with the induction coil;

[0025] Induction crucible, outside is sleeved with the heat preservation bucket;

[0026] Lower heat preservation cover, is set in the heat preservation bucket bottom;

[0027] Upper heat preservation cover, is set in the heat preservation bucket top;

[0028] Workpiece support platform, is set in the induction crucible inside and is set on the lower heat preservation cover.

[0029] Further, the induction heating furnace further includes shell, and the shell includes:

[0030] Furnace shell, is set around the induction coil sleeve;

[0031] Upper furnace cover, cover is set in the furnace shell top;

[0032] Lower furnace cover, is set in the furnace shell bottom.

[0033] Further, the power supply is arranged outside the shell.

[0034] The variable grouping induction coil provided by the utility model embodiment can realize multiple induction heating modes by combination switching switch, for changing the distribution of induction electromagnetic field, adjusting the heating energy of different parts, improving heating efficiency, and has very important significance. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The variable grouping induction coil provided by the utility model embodiment can realize multiple induction heating modes by combination switching switch, for changing the distribution of induction electromagnetic field, adjusting the heating energy of different parts, improving heating efficiency, and has very important significance.

[0036] Figure 2The wiring diagram of the second heating mode of the variable grouping induction coil provided for the first embodiment;

[0037] Figure 3 The wiring diagram of the third heating mode of the variable grouping induction coil provided for the first embodiment;

[0038] Figure 4 The wiring diagram of the fourth heating mode of the variable grouping induction coil provided for the first embodiment;

[0039] Figure 5 The structural diagram of the induction heating furnace provided for the first embodiment;

[0040] Reference signs:

[0041] 1, induction coil; 2, switching switch; 3, power supply;

[0042] 110, heat preservation bucket; 120, induction crucible; 130, lower heat preservation cover; 140, upper heat preservation cover; 150, workpiece support table; 160, workpiece placement area;

[0043] 210, furnace shell; 220, upper furnace cover; 230, lower furnace cover. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0045] It can be understood that the terms "first", "second", etc. used in the present application can be used herein to describe various elements, but unless specifically stated, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, the first xx connection point can be called the second xx connection point, and similarly, the second xx connection point can be called the first xx connection point.

[0046] In the first embodiment, as shown in Figures 1-4 , a variable grouping induction coil is given, which comprises an induction coil 1, a switching switch 2 and a power supply 3;

[0047] The induction coil 1 is provided with N turns in turn, and the switching switch 2 is provided with N-1 in turn; one connection point of the first turn induction coil and one connection point of the Nth turn induction coil are connected to the two poles of the power supply 3 respectively, and the remaining connection points of the induction coil 1 are connected to the switching points of N-1 switching switches 2 in turn;

[0048] The switching mode of the switching switch 2 is that two switching points of each switch are connected with each other and / or two switching points of each switch are connected with the first electrode X and the second electrode Y respectively.

[0049] In the embodiment, a plurality of induction heating modes can be realized by combining the switching switch 2, which is used for changing the distribution of the induction electromagnetic field, adjusting the heating energy of different parts, improving the heating efficiency, and has very important significance.

[0050] N can be 4 in general. Then, the induction coil 1 includes a first coil, a second coil, a third coil and a fourth coil, and the switching switch includes a first switch, a second switch and a third switch.

[0051] The first coil is provided with a first power connection point A1 and a second power connection point A2, the second coil is provided with a third power connection point B1 and a fourth power connection point B2, the third coil is provided with a fifth power connection point C1 and a sixth power connection point C2, and the fourth coil is provided with a seventh power connection point D1 and an eighth power connection point D2.

[0052] The first switch is provided with a first switching point E1 and a second switching point E2, the second switch is provided with a third switching point F1 and a fourth switching point F2, and the third switch is provided with a fifth switching point G1 and a sixth switching point G2.

[0053] The power supply is provided with a first electrode X and a second electrode Y.

[0054] The first power connection point A1 is connected with the second electrode Y, the second power connection point A2 is connected with the second switching point E2, the third power connection point B1 is connected with the first switching point E1, the fourth power connection point B2 is connected with the fourth switching point F2, the fifth power connection point C1 is connected with the third switching point F1, the sixth power connection point C2 is connected with the sixth switching point G2, the seventh power connection point D1 is connected with the fifth switching point G1, and the eighth power connection point D2 is connected with the first electrode X.

[0055] The switching mode of the first switch, the second switch and the third switch is that two switching points of each switch are connected with each other and / or two switching points of each switch are connected with the first electrode X and the second electrode Y respectively.

[0056] In the case of N being 4, the specific switching mode of the switching switch is that the first switch can realize that the first switching point E1 is connected with the second switching point E2, the first switching point E1 is connected with the third power connection point B1, and the second switching point E2 is connected with the second power connection point A2; the first switching point E1 is connected with the second switching point E2, the first switching point E1 is connected with the third power connection point B1, and the second switching point E2 is connected with the second power connection point A2. The other two switching switches are the same.

[0057] As shown in FIG. 1, the induction heating device includes an induction coil 1 and a switching switch 2. Figure 1As shown, in the first heating mode (single group four-turn induction heating mode), the first contact point A1 is connected to the second electrode Y, the eighth contact point D2 is connected to the first electrode X, the first switching point E1 is connected to the second switching point E2, the third switching point F1 is connected to the fourth switching point F2, and the fifth switching point G1 is connected to the sixth switching point G2.

[0058] like Figure 2 As shown, in the second heating mode (two sets of two-turn induction heating mode), the first contact point A1 and the third switching point F1 are connected to the second electrode Y, the eighth contact point D2 and the fourth switching point F2 are connected to the first electrode X, the first switching point E1 is connected to the second switching point E2, and the fifth switching point G1 is connected to the sixth switching point G2.

[0059] like Figure 3 As shown, in the third heating mode (four sets of single-turn induction heating modes), the first contact point A1, the first switching point E1, the third switching point F1 and the fifth switching point G1 are connected to the second electrode Y, the eighth contact point D2, the second switching point E2, the fourth switching point F2 and the sixth switching point G2 are connected to the first electrode X, the first switching point E1 is connected to the second switching point E2, the third switching point F1 is connected to the fourth switching point F2, and the fifth switching point G1 is connected to the sixth switching point G2.

[0060] like Figure 4 As shown, in the fourth heating mode (four sets of single-turn induction heating modes), the first contact point A1, the first switching point E1, the third switching point F1 and the fifth switching point G1 are connected to the second electrode Y, and the eighth contact point D2, the second switching point E2, the fourth switching point F2 and the sixth switching point G2 are connected to the first electrode X.

[0061] In the fifth heating mode (four sets of single-turn induction heating modes), the first contact point A1, the first switching point E1, the third switching point F1 and the fifth switching point G1 are connected to the second electrode Y, the eighth contact point D2, the second switching point E2, the fourth switching point F2 and the sixth switching point G2 are connected to the first electrode X, the first switching point E1 is connected to the second switching point E2, and the fifth switching point G1 is connected to the sixth switching point G2.

[0062] like Figure 5 As shown, in the second embodiment, an induction heating furnace is provided, the induction heating furnace comprising:

[0063] The furnace body is used for heating, and the interior is used to place the items to be heated.

[0064] The variable grouping induction coil of the first embodiment is sleeved outside the furnace body.

[0065] Specifically, the furnace body comprises:

[0066] The outer side of the heat preservation barrel 110 is provided with the induction coil 1.

[0067] The outer side of the induction crucible 120 is sleeved with the heat preservation barrel 110.

[0068] The lower heat preservation cover 130 is arranged at the bottom of the heat preservation barrel 110.

[0069] The upper heat preservation cover 140 is arranged at the top of the heat preservation barrel 110.

[0070] The workpiece support table 150 is arranged inside the induction crucible 120 and is arranged on the lower heat preservation cover 130.

[0071] Specifically, the induction heating furnace further comprises a shell, and the shell comprises:

[0072] The outer shell 210 is arranged around the induction coil 1.

[0073] The upper furnace cover 220 is arranged at the top of the outer shell 210.

[0074] The lower furnace cover 230 is arranged at the bottom of the outer shell 210.

[0075] Specifically, the power supply 3 is arranged outside the outer shell 210.

[0076] In the second embodiment, the heat preservation barrel 110, the lower heat preservation cover 130 and the upper heat preservation cover 120 play a heat preservation role to avoid heat loss; the outer shell 210, the lower furnace cover 230 and the upper furnace cover 220 play a protection role; and the workpiece is placed in the workpiece placement area 160.

[0077] The technical features of the above embodiments can be combined in any manner, and in order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0078] The above only describes the preferred embodiments of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A variable grouping inductor, comprising: The variable grouping induction coil comprises an induction coil, a switch and a power supply; The induction coil is sequentially provided with N turns, and the switch is sequentially provided with N-1 turns; one connection point of the first turn induction coil and one connection point of the Nth turn induction coil are connected to two poles of the power supply, and the remaining connection points of the induction coil are sequentially and staggeredly connected to the switching points of the N-1 switches. The switching mode of the switch is that two switching points of each switch are connected to each other and / or two switching points of each switch are connected to the first electrode and the second electrode respectively.

2. The variable grouping inductive coil of claim 1, wherein, N is 4; The induction coil comprises a first coil, a second coil, a third coil and a fourth coil, and the switch comprises a first switch, a second switch and a third switch; The first coil is provided with a first connection point and a second connection point, the second coil is provided with a third connection point and a fourth connection point, the third coil is provided with a fifth connection point and a sixth connection point, and the fourth coil is provided with a seventh connection point and an eighth connection point; The first switch is provided with a first switching point and a second switching point, the second switch is provided with a third switching point and a fourth switching point, and the third switch is provided with a fifth switching point and a sixth switching point; The power supply is provided with a first electrode and a second electrode; The first connection point is connected to the second electrode, the second connection point is connected to the second switching point, the third connection point is connected to the first switching point, the fourth connection point is connected to the fourth switching point, the fifth connection point is connected to the third switching point, the sixth connection point is connected to the sixth switching point, the seventh connection point is connected to the fifth switching point, and the eighth connection point is connected to the first electrode; The switching mode of the first switch, the second switch and the third switch is that two switching points of each switch are connected to each other and / or two switching points of each switch are connected to the first electrode and the second electrode.

3. The variable grouping inductive coil of claim 2, wherein, In the first heating mode, the first connection point is connected to the second electrode, the eighth connection point is connected to the first electrode, the first switching point is connected to the second switching point, the third switching point is connected to the fourth switching point, and the fifth switching point is connected to the sixth switching point.

4. The variable grouping inductive coil of claim 2, wherein, In the second heating mode, the first connection point and the third switching point are connected to the second electrode, the eighth connection point and the fourth switching point are connected to the first electrode, the first switching point is connected to the second switching point, and the fifth switching point is connected to the sixth switching point.

5. The variable grouping inductive coil of claim 2, wherein, In the third heating mode, the first connection point, the first switching point, the third switching point and the fifth switching point are connected to the second electrode, the eighth connection point, the second switching point, the fourth switching point and the sixth switching point are connected to the first electrode, the first switching point is connected to the second switching point, the third switching point is connected to the fourth switching point, and the fifth switching point is connected to the sixth switching point.

6. The variable grouping inductive coil of claim 2, wherein, In the fourth heating mode, the first connection point, the first switching point, the third switching point and the fifth switching point are connected to the second electrode, and the eighth connection point, the second switching point, the fourth switching point and the sixth switching point are connected to the first electrode.

7. The variable grouping inductive coil of claim 2, wherein, In the fifth heating mode, the first contact point, the first switching point, the third switching point and the fifth switching point are connected to the second electrode, the eighth contact point, the second switching point, the fourth switching point and the sixth switching point are connected to the first electrode, the first switching point is connected to the second switching point, and the fifth switching point is connected to the sixth switching point.

8. An induction heating furnace characterized by comprising: The induction heating furnace comprises: a furnace body for heating; a variable grouping induction coil according to any one of claims 1-7, which is sleeved outside the furnace body.

9. The induction heating furnace according to claim 8, characterized in that, The furnace body comprises: a heat preservation barrel, the outside of which is provided with the induction coil; an induction crucible, the outside of which is sleeved with the heat preservation barrel; a lower heat preservation cover, which is arranged at the bottom of the heat preservation barrel; an upper heat preservation cover, which is arranged at the top of the heat preservation barrel; a workpiece support table, which is arranged inside the induction crucible and on the lower heat preservation cover.

10. The induction heating furnace according to claim 9, characterized in that, The induction heating furnace further comprises a shell, and the shell comprises: a furnace shell, which is arranged around the induction coil; an upper furnace cover, which is arranged on the top of the furnace shell; a lower furnace cover, which is arranged on the bottom of the furnace shell.

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