CN212851086U - Electromagnetic induction heating module and heating equipment - Google Patents

Electromagnetic induction heating module and heating equipment Download PDF

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Publication number
CN212851086U
CN212851086U CN202021777614.8U CN202021777614U CN212851086U CN 212851086 U CN212851086 U CN 212851086U CN 202021777614 U CN202021777614 U CN 202021777614U CN 212851086 U CN212851086 U CN 212851086U
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electromagnetic induction
induction line
line segment
switch
terminal
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王定庚
赖彩霞
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Huizhou Dongchu Intelligent Technology Co.,Ltd.
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Huizhou University
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

The electromagnetic induction heating module comprises an electromagnetic induction coil and a heating control circuit, wherein the electromagnetic induction coil comprises three sections of electromagnetic induction line sections positioned on the same coil, and the electromagnetic induction line sections are sequentially arranged along the direction of the same coil; the heating control circuit comprises: the three groups of half-bridge driving switches are respectively connected with the three electromagnetic induction line sections in a one-to-one correspondence manner, are connected with a power supply end and are used for driving the electromagnetic induction line sections to work; the control module is electrically connected with the control end of the half-bridge driving switch and is used for independently driving each half-bridge driving switch to switch the switch state; and the resonant capacitor is connected with each electromagnetic induction line segment to form a resonant circuit. According to the scheme, the structure is simple, the manufacturing cost is low, independent or cooperative heating control on different parts can be realized within the range of the same electromagnetic induction coil, and the flexibility and the heating uniformity of the equipment in the heating control process are improved.

Description

Electromagnetic induction heating module and heating equipment
Technical Field
The application relates to the field of hot working, in particular to an electromagnetic induction heating module and heating equipment.
Background
The heating scheme based on the electromagnetic induction is widely applied to various hot working fields and has the characteristics of safety, high heating efficiency and the like.
Heating devices using electromagnetic induction heating schemes today typically heat the appliance to be heated by the principle of electromagnetic induction by placing an electromagnetic induction coil below the appliance to be heated. However, only one electromagnetic induction coil is used for heating the same local area, so that the heated whole body is difficult to be uniformly heated to control the heating effect of different parts, the control mode is relatively inflexible, and the heating effect of different parts in the heating process is different, so that the whole heating effect is influenced.
In other implementation manners adopting a plurality of electromagnetic induction coils, heating control can be performed by configuring a plurality of electromagnetic induction coils which are independently placed at different positions, but due to design limitations of coil structures and control circuits, the structure is more complex, the occupied space is larger, and the application range of the electromagnetic induction coils is influenced.
Disclosure of Invention
The application provides an electromagnetic induction heating module and firing equipment, can improve flexibility and the heating homogeneity of equipment in the control heating process.
The embodiment of the application discloses an electromagnetic induction heating module, which comprises an electromagnetic induction coil and a heating control circuit;
the electromagnetic induction coil comprises three electromagnetic induction line sections positioned on the same coil, and the electromagnetic induction line sections are sequentially arranged along the direction of the same coil;
the heating control circuit comprises:
the three groups of half-bridge driving switches are respectively connected with the three electromagnetic induction line sections in a one-to-one correspondence manner, are connected with a power supply end and are used for driving the electromagnetic induction line sections to work;
the control module is electrically connected with the control end of the half-bridge driving switch and is used for independently driving each half-bridge driving switch to switch the switch state; and
and the resonant capacitor is connected with each electromagnetic induction line segment to form a resonant circuit.
In one embodiment, the electromagnetic induction coil comprises three electromagnetic induction line segments;
and a common end is formed between the three electromagnetic induction line sections and is positioned at the joint of two adjacent electromagnetic induction line sections.
In one embodiment, the power supply terminals include a positive power supply terminal and a negative power supply terminal;
the resonant capacitor is connected between the common terminal and a negative power terminal and/or between the common terminal and a positive power terminal.
In an embodiment, the electromagnetic induction line segment includes a first electromagnetic induction line segment, a second electromagnetic induction line segment and a third electromagnetic induction line segment which are connected in sequence, the half-bridge drive switch includes a first half-bridge drive switch, a second half-bridge drive switch and a third half-bridge drive switch, and the control module includes a first drive end, a second drive end and a third drive end which can be driven separately;
the first driving end of the control module is electrically connected with the control end of the first half-bridge driving switch, the second driving end of the control module is electrically connected with the control end of the second half-bridge driving switch, and the third driving end of the control module is electrically connected with the control end of the third half-bridge driving switch;
the driving end of the first half-bridge driving switch is connected with one end of the first electromagnetic induction line segment, the second half-bridge driving switch is connected with one end of the second electromagnetic induction line segment, and the driving end of the third half-bridge driving switch is connected with one end of the third electromagnetic induction line segment;
the other end of the first electromagnetic induction line segment is connected with the other end of the second electromagnetic induction line segment and the other end of the third electromagnetic induction line segment through the same common end;
the common terminal is connected with the negative power supply terminal through the resonance capacitor and/or is connected with the positive power supply terminal.
In one embodiment, a first terminal is arranged between the first electromagnetic induction line segment and the driving end of the first half-bridge driving switch;
the common end of the first electromagnetic induction line segment and the second electromagnetic induction line segment is provided with a second wiring end;
a third terminal is arranged between the second electromagnetic induction line segment and the driving end of the second half-bridge driving switch;
a fourth terminal is arranged between the third electromagnetic induction line segment and the driving end of the third half-bridge driving switch;
and a fifth wiring terminal is arranged between the third electromagnetic induction line segment and the common ends of the first electromagnetic induction line segment and the second electromagnetic induction line segment.
In one embodiment, the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment have the same winding direction;
the first wiring terminal is located near the circle center of the electromagnetic induction coil, the third wiring terminal is adjacent to the fourth wiring terminal, the second electromagnetic induction line segment is not connected with the third electromagnetic induction line segment, and the third electromagnetic induction line segment is connected with the public end through the fifth wiring terminal.
In one embodiment, the half-bridge drive switch comprises an igbt, a MOS transistor, a bipolar transistor, a thyristor, or a thyristor.
In one embodiment, the inductance value of each of the electromagnetic induction line segments ranges from 20 μ H to 200 μ H.
In one embodiment, the capacitance value of the resonant capacitor is in a range of 0.2 μ F-2 μ F.
The application also discloses a heating device, heating device includes the electromagnetic induction heating module, the electromagnetic induction heating module be as above arbitrary any the electromagnetic induction heating module.
Therefore, in the electromagnetic induction heating module and the heating device in the embodiment of the application, the electromagnetic induction coil has three electromagnetic induction line sections located in the same coil, and the control module is used for controlling the half-bridge driving switch to independently control the working states of different electromagnetic induction line sections, so that the heating process of the device can be flexibly controlled. According to the scheme, the structure is simple, the manufacturing cost is low, independent or cooperative heating control on different parts can be realized within the range of the same electromagnetic induction coil, and the flexibility and the heating uniformity of the equipment in the heating control process are improved.
Drawings
Fig. 1 is a schematic structural diagram of a heating module of an electromagnetic induction heating module according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an electromagnetic induction coil provided in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a heating control circuit according to an embodiment of the present application.
Fig. 4 is another schematic structural diagram of a heating control circuit according to an embodiment of the present application.
Fig. 5 is a schematic diagram of another structure of a heating control circuit according to an embodiment of the present disclosure.
Fig. 6 is a schematic view of an application scenario of the electromagnetic induction heating module according to the embodiment of the present application.
Fig. 7 is a schematic structural diagram of a heating apparatus provided in an embodiment of the present application.
Detailed Description
The following detailed description of the preferred embodiments of the present application, taken in conjunction with the accompanying drawings, will make the advantages and features of the present application more readily appreciated by those skilled in the art, and thus will more clearly define the scope of the invention.
Referring to fig. 1, a structure of an electromagnetic induction heating module according to an embodiment of the present application is shown.
As shown in fig. 1, the electromagnetic induction heating module includes an electromagnetic induction coil 1 and a heating control circuit 2, and the heating control circuit 2 includes three sets of half-bridge driving switches, a control module 22 and a resonant capacitor 23.
The electromagnetic induction coil 1 comprises three electromagnetic induction line sections which are positioned on the same coil, and the electromagnetic induction line sections are sequentially arranged along the direction of the same coil.
Specifically, the three electromagnetic induction line segments are respectively positioned on three sections of the same coil which are sequentially arranged along the direction of the coil. A common end O is formed between the electromagnetic induction line sections, the common end O is positioned at the joint of two adjacent electromagnetic induction line sections, one end of the electromagnetic induction line section of the other section is connected with the common end O through a wiring terminal, and the other end of the electromagnetic induction line section is adjacent to one of the two electromagnetic induction line sections but not connected with the other one of the two electromagnetic induction line sections, so that three electromagnetic induction line sections are connected through the common end O and positioned in the space range of the same coil, and the problems of complex structure and high cost caused by a plurality of coils are solved.
In an embodiment, the electromagnetic induction line segments include a first electromagnetic induction line segment AO, a second electromagnetic induction line segment BO, and a third electromagnetic induction line segment CD, and the half-bridge driving switch includes a first half-bridge driving switch 21a, a second half-bridge driving switch 21b, and a third half-bridge driving switch 21 c. A first terminal is arranged between the first electromagnetic induction line segment AO and the driving end of the first half-bridge driving switch 21 a; a common end O of the first electromagnetic induction line segment AO and the second electromagnetic induction line segment BO is provided with a second terminal; a third terminal is arranged between the second electromagnetic induction line section BO and the driving end of the second half-bridge driving switch 21 b; a fourth terminal is arranged between the third electromagnetic induction line segment CD and the driving end of the third half-bridge driving switch 21 c; and a fifth terminal is arranged between the third electromagnetic induction line segment CD and the common end O of the first electromagnetic induction line segment AO and the second electromagnetic induction line segment BO. The common terminal O is connected to the resonant capacitor 23 and a negative power supply through the resonant capacitor 23, and the first half-bridge driving switch 21a, the second half-bridge driving switch 21b and the third half-bridge driving switch 21c are connected to the control module 22 to be controlled by the control module 22 to implement operation or disconnection.
Specifically, the winding directions of the first electromagnetic induction line segment AO, the second electromagnetic induction line segment BO and the third electromagnetic induction line segment CD are the same; the first terminal is located near the center of a circle of the electromagnetic induction coil 1, the third terminal is adjacent to the fourth terminal, the second electromagnetic induction line section BO is not connected with the third electromagnetic induction line section CD, and the third electromagnetic induction line section CD is connected with the common end O through the fifth terminal. The coil arrangement shown in fig. 1 reduces mutual interference among the line segments, and ensures working phases of the first electromagnetic induction line segment AO, the second electromagnetic induction line segment BO and the third electromagnetic induction line segment CD in the same coil.
Referring to fig. 2, another structure of the electromagnetic induction coil 1 according to the embodiment of the present application is shown. In another embodiment, the electromagnetic induction coil 1 includes a first electromagnetic induction line AO, a second electromagnetic induction line BO, and a third electromagnetic induction line CD, which may be wound around a long strip structure and connected at a common end O of the first electromagnetic induction line AO and the second electromagnetic induction line BO, wherein the second electromagnetic induction line BO and the third electromagnetic induction line CD are not connected.
It is understood that the electromagnetic coil 1 may be in the form of a concave coil or other conventional coil structures besides the coil structures shown in fig. 1-2, and will not be described in detail herein.
The inductance value of each electromagnetic induction line segment ranges from 20 muH to 200 muH, so as to ensure the working effect of the electromagnetic induction line segment. It is understood that the specific parameters of the electromagnetic induction line segment may be selected according to practical situations, and the present application does not limit the specific parameters.
The half-bridge driving switch is respectively connected with the three electromagnetic induction line sections in a one-to-one correspondence manner, is connected with a power supply end and is used for driving the electromagnetic induction line sections to work. The half-bridge driving switches can be connected with one electromagnetic induction line segment and independently control the working state of the electromagnetic induction line segment, and therefore the three electromagnetic induction line segments are controlled through the three half-bridge driving switches respectively.
In an embodiment, the half-bridge driving switch may include an IGBT, a MOS transistor, a bipolar transistor, a thyristor, or a thyristor as the controllable switch of the heating control circuit 2. In particular, the half-bridge driving switch may include two diodes to form a half-bridge circuit.
The control module 22 is electrically connected to the control terminals of the half-bridge driving switches, and is configured to drive each half-bridge driving switch individually for switching the switch states.
The control module 22 may include an MCU unit with at least three PWM output functions, and the MCU unit may drive the half-bridge driving switch to switch the operating state by controlling the PWM characteristics, so as to control the operation of the electromagnetic induction line. It can be understood that the heating control mode of the MCU can be designed according to actual conditions, and the existing heating control mode can also be adopted.
In an embodiment, the control module 22 may receive control from a user through a control button or a touch screen, so as to switch the control mode of the electromagnetic induction line segment. The control button and the touch screen can refer to the existing heating equipment, and the description is omitted here.
The resonant capacitor 23 is connected to each of the electromagnetic induction line segments to form a resonant circuit. The capacitance range of the resonant capacitor 23 is 0.2 μ F to 2 μ F, and the specific value of the resonant capacitor 23 may be matched according to the parameter of the electromagnetic induction line segment, which is not limited in this application.
In one embodiment, the power supply terminals include a positive power supply terminal and a negative power supply terminal. The resonant capacitor 23 is connected between the common terminal O and the negative power terminal of the three electromagnetic induction line segments, or the resonant capacitor 23 is connected between the common terminal O and the positive power terminal of the two electromagnetic induction line segments; in another embodiment, the resonant capacitor 23 is connected between the common terminal O of the three electromagnetic induction line segments and the negative power terminal, and between the common terminal O of the three electromagnetic induction line segments and the positive power terminal. The three electromagnetic induction line segments can normally work only by sharing one group of resonant capacitor 23, the structure is simple, and the manufacturing cost is saved.
Referring to fig. 3, a structure of a heating control circuit according to an embodiment of the present disclosure is shown.
The electromagnetic induction heating module comprises electromagnetic induction line sections L1-L3 and a heating control circuit, wherein the heating control circuit comprises three groups of half-bridge driving switches T1-T6, a control module 12, resonant capacitors C1 and C2.
Specifically, the electromagnetic induction line segment comprises a first electromagnetic induction line segment L1, a second electromagnetic induction line segment L2 and a third electromagnetic induction line segment L3 which are sequentially arranged, wherein the half-bridge driving switches adopt IGBTs as driving switches and comprise a first half-bridge driving switch T1-T2, a second half-bridge driving switch T3-T4, a third half-bridge driving switch T4-T5 and 6 IGBT drives, the control module 12 can comprise a first driving end, a second driving end and a third driving end which can be driven independently, wherein the first driving end comprises PWM1 and PWM2, the second driving end comprises PWM3 and PWM4, and the third driving end comprises PWM5 and PWM 6.
The first driving terminals PWM1 and PWM2 of the control module 12 are electrically connected to the control terminals of the first half-bridge driving switches T1-T2, i.e., the IGBT drivers connected to the first half-bridge driving switches T1-T2. The second driving terminals PWM3 and PWM4 of the control module 12 are electrically connected to the control terminals of the second half-bridge driving switches T3 to T4, i.e., the IGBT drivers connected to the second half-bridge driving switches T3 to T4. The third driving terminals PWM5 and PWM6 of the control module 12 are electrically connected to the control terminals of the third half-bridge driving switches T5 to T6, i.e., the IGBT drivers connected to the third half-bridge driving switches T5 to T6.
The driving end a of the first half-bridge driving switch T1-T2 is connected to one end of a first electromagnetic induction line segment L1, the driving end B of the second half-bridge driving switch T3-T4 is connected to one end of a second electromagnetic induction line segment L2, and the driving end C of the third half-bridge driving switch T5-T6 is connected to one end of the second electromagnetic induction line segment L3.
The other end of the first electromagnetic induction line segment L1 is connected to the other end of the second electromagnetic induction line segment L2 and the other end of the third electromagnetic induction line segment L3 to form a common terminal O, and is connected to the negative power supply terminal V-through the resonant capacitor C1 and to the positive power supply terminal V + through the resonant capacitor C2.
Referring to fig. 4, another structure of the heating control circuit according to the embodiment of the present application is shown.
The difference from fig. 3 is that the other end of the first electromagnetic induction line segment is connected with the other ends of the second electromagnetic induction line segment and the third electromagnetic induction line segment to form a common terminal O, and the common terminal O is connected with the negative power supply terminal V-only through the resonant capacitor C1.
Referring to fig. 5, a further structure of the heating control circuit according to the embodiment of the present application is shown.
The difference between the two electromagnetic induction lines is that the other end of the first electromagnetic induction line segment is connected with the other ends of the second electromagnetic induction line segment and the third electromagnetic induction line segment to form a common end O, and the common end O is connected with the positive power supply end V + only through the resonant capacitor C2.
In an implementation process, when the first electromagnetic induction line segment L1 needs to work, the control module 12 controls the corresponding IGBT driving through the first driving terminals PWM1 and PWM2, so as to turn on the first half bridge driving switch T1-T2. At this time, the first electromagnetic induction line segment L1 forms resonance in cooperation with the resonance capacitor C1 and/or C2, and the heating is realized by using the electromagnetic induction effect formed by the first electromagnetic induction line segment L1 and the coil at the corresponding position of the appliance to be heated.
When the second electromagnetic induction line segment L2 needs to work, the control module 12 controls the corresponding IGBT driving through the second driving terminals PWM3 and PWM4, so as to turn on the second half-bridge driving switch T3-T4. At this time, the second electromagnetic induction line segment L2 generates resonance in cooperation with the resonance capacitor C1 and/or C2, and the heating is realized by using the electromagnetic induction effect formed by the second electromagnetic induction line segment L2 and the coil at the corresponding position of the appliance to be heated.
When the third electromagnetic induction line segment L3 needs to work, the control module 12 controls the corresponding IGBT driving through the third driving terminals PWM5 and PWM6, so as to turn on the third half-bridge driving switch T5-T6. At this time, the third electromagnetic induction line segment L3 generates resonance in cooperation with the resonant capacitor C1 and/or C2, and the heating is realized by using the electromagnetic induction effect formed by the third electromagnetic induction line segment L3 and the coil at the corresponding position of the appliance to be heated.
The first electromagnetic induction line segment L1, the second electromagnetic induction line segment L2, and the third electromagnetic induction line segment L3 may operate simultaneously or separately.
Referring to fig. 6, an application scenario of the electromagnetic induction heating module according to the embodiment of the present application is shown.
The figure shows a heated zone 3 of a heat receiving device, the heated zone 3 comprising a first heated zone 31, a second heated zone 32, and a third heated zone 33. When the first electromagnetic induction line section works, an electromagnetic induction effect is generated between the first electromagnetic induction line section and the first heated area 31, and the first electromagnetic induction line section and the first heated area are heated; when the second electromagnetic induction line section works, the second electromagnetic induction line section and the second heated area 32 generate an electromagnetic induction effect and heat the second heated area; when the third electromagnetic induction line section works, the third electromagnetic induction line section and the third heated area 33 generate an electromagnetic induction effect and heat the third heated area.
At this time, the heating control of the first heated area 31 or the individual/cooperative heating of the first heated area 31, the second heated area 32 or the third heated area 33 may be selected according to the size of the heated area of the heat receiving device.
When only the first heated area 31 is used, the heating control of the first heated area 31 can be realized by controlling the induction output power of the first electromagnetic induction line segment.
When the first heated area 31, the second heated area 32 and the third heated area 33 are used simultaneously, the induction output powers of the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment can be respectively controlled in the heating process, so that different heated areas are heated more uniformly.
For example, if the heating power is affected by the power during the heating process, the heating power decreases from the center of the electromagnetic induction coil to the periphery. At this time, the power ratios among the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment can be adjusted, so that the output power of the first electromagnetic induction line segment, the induction output power of the second electromagnetic induction line segment and the third electromagnetic induction line segment are sequentially increased, or the specific power ratio is adjusted according to actual needs, for example, the induction output power of the second electromagnetic induction line segment is increased, and the induction output powers of the first electromagnetic induction line segment and the third electromagnetic induction line segment are maintained at the same value, so that different heated areas are heated more uniformly.
The induction output power can enable different electromagnetic induction line sections to have different heating powers in different states by utilizing program control according to actual heating conditions, and the heating effect is improved.
The induction output power of the first electromagnetic induction line segment and the induction output power of the second electromagnetic induction line segment can be flexibly set in respective proportion according to needs. The working mode of each electromagnetic induction line segment can be set according to the requirement, and the electromagnetic induction line segment is not limited in the application.
It can be known that, the positions of the first electromagnetic induction line segment L1, the second electromagnetic induction line segment L2 and the third electromagnetic induction line segment L3 in the electromagnetic induction coil are different, so that the first electromagnetic induction line segment L1, the second electromagnetic induction line segment L2 and the third electromagnetic induction line segment L3 can be respectively controlled to heat different parts of the appliance to be heated, and the heating control process is more flexible. In addition, the control circuit structure of the electromagnetic induction heating module is simpler, and the manufacturing cost of the device is favorably reduced.
To sum up, in the electromagnetic induction heating module in this application embodiment, its electromagnetic induction coil has the three-section electromagnetic induction line section that is located same coil, utilizes control module control half-bridge drive switch to carry out the independent control to the operating condition of different electromagnetic induction line sections to the realization carries out nimble control to the heating process of equipment. According to the scheme, the structure is simple, the manufacturing cost is low, independent or cooperative heating control on different parts can be realized within the range of the same electromagnetic induction coil, and the flexibility and the heating uniformity of the equipment in the heating control process are improved.
Referring to fig. 7, a structure of a heating apparatus according to an embodiment of the present application is shown.
The heating apparatus comprises an electromagnetic induction heating module 10, wherein the electromagnetic induction heating module 10 is the electromagnetic induction heating module 10 in any one of the embodiments shown in fig. 1-2.
The heating device 100 may refer to a dc power supply composed of an ac input module and a rectifier bridge as shown in fig. 2, and the dc power supply is connected to the heating control circuit of the electromagnetic induction heating module 10 through a filter module composed of an inductor L0 and a capacitor C0. In addition, the electromagnetic induction heating module 10 can receive control from a user by setting a control button or a touch screen, so as to switch the control mode of the electromagnetic induction line.
It should be noted that, for specific implementation manners of the structure of the heating apparatus other than the electromagnetic induction heating module 10, for example, the above-mentioned dc power supply, control buttons, touch screen and their corresponding implementation manners, etc., reference may be made to the solutions disclosed in the art, and the application is not limited thereto.
From the above, the heating device is provided with the electromagnetic induction heating module as shown in fig. 1-2, so that the heating device can flexibly control the heating process of the device. According to the scheme, the structure is simple, the manufacturing cost is low, independent or cooperative heating control on different parts can be realized within the range of the same electromagnetic induction coil, and the flexibility and the heating uniformity of the equipment in the heating control process are improved.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge of those skilled in the art.

Claims (10)

1. The utility model provides an electromagnetic induction heating module, includes electromagnetic induction coil and heating control circuit, its characterized in that:
the electromagnetic induction coil comprises three electromagnetic induction line sections positioned on the same coil, and the electromagnetic induction line sections are sequentially arranged along the direction of the same coil;
the heating control circuit comprises:
the three groups of half-bridge driving switches are respectively connected with the three electromagnetic induction line sections in a one-to-one correspondence manner, are connected with a power supply end and are used for driving the electromagnetic induction line sections to work;
the control module is electrically connected with the control end of the half-bridge driving switch and is used for independently driving each half-bridge driving switch to switch the switch state; and
and the resonant capacitor is connected with each electromagnetic induction line segment to form a resonant circuit.
2. The electromagnetic induction heating module of claim 1, wherein a common terminal is formed between three sections of the electromagnetic induction line segments, and the common terminal is located at a junction of two adjacent sections of the electromagnetic induction line segments.
3. The electromagnetic induction heating module of claim 2, wherein:
the power supply ends comprise a positive power supply end and a negative power supply end;
the resonant capacitor is connected between the common terminal and a negative power terminal and/or between the common terminal and a positive power terminal.
4. The electromagnetic induction heating module of claim 3, wherein:
the electromagnetic induction line section comprises a first electromagnetic induction line section, a second electromagnetic induction line section and a third electromagnetic induction line section which are sequentially connected, the half-bridge drive switch comprises a first half-bridge drive switch, a second half-bridge drive switch and a third half-bridge drive switch, and the control module comprises a first drive end, a second drive end and a third drive end which can be independently driven;
the first driving end of the control module is electrically connected with the control end of the first half-bridge driving switch, the second driving end of the control module is electrically connected with the control end of the second half-bridge driving switch, and the third driving end of the control module is electrically connected with the control end of the third half-bridge driving switch;
the driving end of the first half-bridge driving switch is connected with one end of the first electromagnetic induction line segment, the second half-bridge driving switch is connected with one end of the second electromagnetic induction line segment, and the driving end of the third half-bridge driving switch is connected with one end of the third electromagnetic induction line segment;
the other end of the first electromagnetic induction line segment is connected with the other end of the second electromagnetic induction line segment and the other end of the third electromagnetic induction line segment through the same common end;
the common terminal is connected with the negative power supply terminal through the resonance capacitor and/or is connected with the positive power supply terminal.
5. The electromagnetic induction heating module of claim 4, wherein a first terminal is provided between said first electromagnetic induction line segment and a driving end of said first half-bridge drive switch;
the common end of the first electromagnetic induction line segment and the second electromagnetic induction line segment is provided with a second wiring end;
a third terminal is arranged between the second electromagnetic induction line segment and the driving end of the second half-bridge driving switch;
a fourth terminal is arranged between the third electromagnetic induction line segment and the driving end of the third half-bridge driving switch;
and a fifth wiring terminal is arranged between the third electromagnetic induction line segment and the common ends of the first electromagnetic induction line segment and the second electromagnetic induction line segment.
6. The electromagnetic induction heating module of claim 5, wherein the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment have the same winding direction;
the first wiring terminal is located near the circle center of the electromagnetic induction coil, the third wiring terminal is adjacent to the fourth wiring terminal, the second electromagnetic induction line segment is not connected with the third electromagnetic induction line segment, and the third electromagnetic induction line segment is connected with the public end through the fifth wiring terminal.
7. The electromagnetic induction heating module of any of claims 1-6, wherein the half-bridge drive switch comprises an IGBT, MOS transistor, bipolar transistor, thyristor, or thyristor.
8. The electromagnetic induction heating module of any one of claims 1-6, wherein the inductance value of each of said electromagnetic induction line segments is in the range of 20 μ H-200 μ H.
9. The electromagnetic induction heating module of any of claims 1-6, wherein the resonant capacitor has a capacitance value in the range of 0.2 μ F-2 μ F.
10. A heating apparatus, characterized in that the heating apparatus comprises an electromagnetic induction heating module according to any one of claims 1-9.
CN202021777614.8U 2019-11-08 2020-08-21 Electromagnetic induction heating module and heating equipment Active CN212851086U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911088864.2A CN110636658A (en) 2019-11-08 2019-11-08 Electromagnetic induction heating module and heating equipment
CN2019110888642 2019-11-08

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Publication Number Publication Date
CN212851086U true CN212851086U (en) 2021-03-30

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CN201911088864.2A Withdrawn CN110636658A (en) 2019-11-08 2019-11-08 Electromagnetic induction heating module and heating equipment
CN202021777614.8U Active CN212851086U (en) 2019-11-08 2020-08-21 Electromagnetic induction heating module and heating equipment
CN202010851273.2A Pending CN112105107A (en) 2019-11-08 2020-08-21 Electromagnetic induction heating module and heating equipment

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CN201911088864.2A Withdrawn CN110636658A (en) 2019-11-08 2019-11-08 Electromagnetic induction heating module and heating equipment

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Application Number Title Priority Date Filing Date
CN202010851273.2A Pending CN112105107A (en) 2019-11-08 2020-08-21 Electromagnetic induction heating module and heating equipment

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CN112105107A (en) 2020-12-18

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