CN110933793A - Electromagnetic induction heating module and heating equipment - Google Patents

Electromagnetic induction heating module and heating equipment Download PDF

Info

Publication number
CN110933793A
CN110933793A CN201911312332.2A CN201911312332A CN110933793A CN 110933793 A CN110933793 A CN 110933793A CN 201911312332 A CN201911312332 A CN 201911312332A CN 110933793 A CN110933793 A CN 110933793A
Authority
CN
China
Prior art keywords
electromagnetic induction
induction line
line segment
switch
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201911312332.2A
Other languages
Chinese (zh)
Inventor
王定庚
赖彩霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou University
Original Assignee
Huizhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou University filed Critical Huizhou University
Priority to CN201911312332.2A priority Critical patent/CN110933793A/en
Publication of CN110933793A publication Critical patent/CN110933793A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • H05B6/06—Control, e.g. of temperature, of power
    • 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
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment

Landscapes

  • 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 two 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 two groups of half-bridge driving switches are respectively connected with the two 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, independent or cooperative heating control of different areas of the heated body 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 and heat treatment, 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 range, the heated body is difficult to be heated uniformly as a whole, the control mode is not flexible, 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, wherein the electromagnetic induction coil comprises two electromagnetic induction line sections positioned on the same coil, and the electromagnetic induction line sections are sequentially arranged along the trend of the same coil;
the heating control circuit comprises:
the two groups of half-bridge driving switches are respectively connected with the two 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, a common end is formed between two electromagnetic induction line segments, and the common end is located at the connection position of two adjacent electromagnetic induction line segments.
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 and a second electromagnetic induction line segment which are connected in sequence, the half-bridge driving switch includes a first half-bridge driving switch and a second half-bridge driving switch, and the control module includes a first driving end and a second driving 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, and the second driving end of the control module is electrically connected with the control end of the second 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, and the second half-bridge driving switch is connected with one end of the second 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 is grounded through the resonant capacitor.
In an embodiment, the first electromagnetic induction line segment and the second electromagnetic induction line segment have the same winding direction.
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;
and a third terminal is arranged between the second electromagnetic induction line segment and the driving end of the second half-bridge driving switch.
In one embodiment, the half-bridge driving 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 embodiment of the application further provides a heating device, the heating device comprises an electromagnetic induction heating module, and the electromagnetic induction heating module is any one of the electromagnetic induction heating modules.
From the above, in the electromagnetic induction heating module and the heating device in the embodiment of the present application, the electromagnetic induction coil has two electromagnetic induction line segments located in the same coil, and the control module is used to control the half-bridge driving switch to individually control the operating states of different electromagnetic induction line segments, so as to flexibly control the heating process of the device. The scheme has the advantages of simple structure and low manufacturing cost, and can realize independent or cooperative heating control on different heated areas within the range of the same electromagnetic induction coil, thereby improving the flexibility and heating uniformity of the equipment in the heating control process.
Drawings
Fig. 1 is a schematic structural diagram 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 two sets of half-bridge driving switches, a control module 22 and a resonant capacitor 23.
The electromagnetic induction coil 1 comprises two 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.
Specifically, the two electromagnetic induction line segments are respectively positioned at the head and the tail of the same coil. A common end O is formed between the electromagnetic induction line sections and is located at the joint of the adjacent electromagnetic induction coils 1, so that the two electromagnetic induction line sections are connected through the common end O to form the same coil, and the problems of complex structure and high cost caused by a plurality of coils are solved. The winding directions of the first electromagnetic induction line section AO and the second electromagnetic induction line section BO are the same, so that the working phases of the first electromagnetic induction line section AO and the second electromagnetic induction line section BO in the same coil are ensured.
In one embodiment, the electromagnetic induction line segment includes a first electromagnetic induction line segment AO and a second electromagnetic induction line segment BO, and the half-bridge driving switch includes a first half-bridge driving switch 21a and a second half-bridge driving switch 21 b. A first terminal is arranged between the first electromagnetic induction line section AO and the driving end of the first half-bridge driving switch 21a, and the first electromagnetic induction line section AO is connected with the first half-bridge driving switch 21a through the first terminal; the 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, and the common end O of the first electromagnetic induction line segment AO and the second electromagnetic induction line segment BO is connected with the resonant capacitor 23 through the second terminal; a third terminal is arranged between the second electromagnetic induction line BO and the driving terminal of the second half-bridge driving switch 21b, and the second electromagnetic induction line BO is connected with the driving terminal of the second half-bridge driving switch 21b through the third terminal. 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 and the second half-bridge driving switch 21b are connected to the control module 22 to be controlled by the control module 22 to implement operation or disconnection.
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 coil 1 includes a first electromagnetic induction line AO and a second electromagnetic induction line BO, which may surround a strip-shaped structure and are connected at a common end O of the first electromagnetic induction line AO and the second electromagnetic induction line BO.
It will be appreciated that the electromagnetic coil may be in the form of a concave coil or other conventional coil structure other than the coil 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 two 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. Wherein, a set of half-bridge drive switch can be connected with a section electromagnetic induction line section to the operating condition of this section electromagnetic induction line section of independent control, consequently, the control is realized through two sets of half-bridge drive switches respectively to the electromagnetic induction line section of both ends.
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 a PWM output function, and the MCU unit may drive the half-bridge driving switch to switch the operating state by controlling the PWM characteristic, 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 end O of the two electromagnetic induction line segments and the negative power supply end, or the resonant capacitor 23 is connected between the common end O of the two electromagnetic induction line segments and the positive power supply end; in another embodiment, the resonant capacitor 23 is connected between the common terminal O of the two electromagnetic induction line segments and the negative power terminal, and between the common terminal O of the two electromagnetic induction line segments and the positive power terminal. The two 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 coils L1-L2 and a heating control circuit, wherein the heating control circuit comprises two groups of half-bridge driving switches T1-T4, a control module 12 and resonant capacitors C1 and C2.
Specifically, the electromagnetic induction line segment comprises a first electromagnetic induction line segment L1 and a second electromagnetic induction line segment L2 which are connected in sequence, the half-bridge driving switches here adopt IGBTs as driving switches, and comprise a first half-bridge driving switch T1-T2, a second half-bridge driving switch T3-T4, and 4 IGBT drives, and the control module 12 may comprise a first driving end and a second driving end which can be driven separately, wherein the first driving end comprises PWM1 and PWM2, and the second driving end comprises PWM3 and PWM 4.
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 to T2, that is, the IGBT drivers connected to the first half-bridge driving switches T1 to T2, and 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, that is, the IGBT drivers connected to the second half-bridge driving switches T3 to T4.
The driving terminal a of the first half-bridge driving switch T1-T2 is connected to one end of the first electromagnetic induction line segment L1, and the driving terminal B of the second half-bridge driving switch T3-T4 is connected to one end of the second electromagnetic induction line segment L2.
The other end of the first electromagnetic induction line segment is connected with the other end of the second electromagnetic induction line segment to form a common end O, and the common end is connected with a negative power supply end V-through a resonant capacitor C1 and is connected with a positive power supply end V + through another 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 end of the second 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.
It differs from fig. 3 and 4 in that the other end of the first electromagnetic induction line segment is connected to the other end of the second electromagnetic induction line segment to form a common terminal O, which is connected to the positive power supply terminal 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 cooperates with the resonant capacitor C1 and/or C2 to generate resonance, and the first electromagnetic induction line segment L1 forms an electromagnetic induction effect with the coil at the corresponding position of the appliance to be heated, so as to realize heating.
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.
The first electromagnetic induction line segment L1 and the second electromagnetic induction line segment L2 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 and a second heated zone 32. 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.
At this time, the heating control of the first heated area 31 or the individual/cooperative heating of the first heated area 31 and the second heated area 32 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 and the second heated area 32 are used simultaneously, the induction output powers of the first electromagnetic induction line segment and the second electromagnetic induction line segment can be controlled respectively in the heating process, so that different heated areas are heated more uniformly.
For example, if the heating process is affected by power, the heating power of the second heated area 32 is lower than that of the first heated area 31. At the moment, the power ratio between the first electromagnetic induction line section and the second electromagnetic induction line section can be adjusted, so that the induction output power of the second electromagnetic induction line section is slightly larger than that of the first electromagnetic induction line section, and the specific power ratio can be adjusted according to actual needs, 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.
Therefore, the positions of the first electromagnetic induction line segment L1 and the second electromagnetic induction line segment L2 in the electromagnetic induction coil are different, so that different parts of the appliance to be heated can be heated by respectively controlling, 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 two sections electromagnetic induction line sections that are located same coil, utilizes control module control half-bridge drive switch to carry out independent control or cooperative 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 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 two 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 two groups of half-bridge driving switches are respectively connected with the two 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 end is formed between two electromagnetic induction line segments, and the common end is located at the junction of two adjacent 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 and a second electromagnetic induction line section which are sequentially connected, the half-bridge drive switch comprises a first half-bridge drive switch and a second half-bridge drive switch, and the control module comprises a first drive end and a second 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, and the second driving end of the control module is electrically connected with the control end of the second 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, and the second half-bridge driving switch is connected with one end of the second 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 is grounded through the resonant capacitor.
5. The electromagnetic induction heating module of claim 4, wherein the first electromagnetic induction line segment and the second electromagnetic induction line segment are wound in the same direction.
6. The electromagnetic induction heating module of claim 4, wherein:
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;
and a third terminal is arranged between the second electromagnetic induction line segment and the driving end of the second half-bridge driving switch.
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.
CN201911312332.2A 2019-12-18 2019-12-18 Electromagnetic induction heating module and heating equipment Withdrawn CN110933793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911312332.2A CN110933793A (en) 2019-12-18 2019-12-18 Electromagnetic induction heating module and heating equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911312332.2A CN110933793A (en) 2019-12-18 2019-12-18 Electromagnetic induction heating module and heating equipment

Publications (1)

Publication Number Publication Date
CN110933793A true CN110933793A (en) 2020-03-27

Family

ID=69864404

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911312332.2A Withdrawn CN110933793A (en) 2019-12-18 2019-12-18 Electromagnetic induction heating module and heating equipment

Country Status (1)

Country Link
CN (1) CN110933793A (en)

Similar Documents

Publication Publication Date Title
CN102484907A (en) Induction heating apparatus
US9806594B2 (en) Drive device for power converter and driving method of power converter
CN105874701A (en) Improved high frequency series AC voltage regulator
KR102326999B1 (en) Induction heat cooking apparatus and method for driving the same
EP3562267B1 (en) Control circuits and methods for distributed induction heating devices
EP3562268A1 (en) System and method for controlling induction heating devices with series connected switching devices
CN212344094U (en) Electromagnetic induction heating module and heating equipment
WO2012062922A1 (en) Voltage converter comprising a storage inductor with one winding and a storage inductor with two windings
CN108352776A (en) Improved current transformer
CN212851086U (en) Electromagnetic induction heating module and heating equipment
CN110933793A (en) Electromagnetic induction heating module and heating equipment
CN110913512A (en) Electromagnetic induction heating module and heating equipment
US11140751B2 (en) System and method for controlling quasi-resonant induction heating devices
CN211792105U (en) Multi-coil heating module and heating system
CN210807706U (en) Power control circuit and induction cooker
KR102306811B1 (en) Induction heat cooking apparatus and method for driving the same
CN103836682A (en) Induction cooker with multiple cooking ranges
EP0817531A2 (en) Flexible and re-configurable topology
US10681780B2 (en) Induction heat cooking apparatus
CN109195240A (en) IGBT control circuit, control method, control circuit of heating electric appliance and heating electric appliance
JP4345209B2 (en) Induction heating cooker
CN108966398B (en) Device for inhibiting electromagnetic coupling, control circuit, electric appliance and control method thereof
CN210330344U (en) Power conversion circuit, combination control system and cooking utensil
CN202973223U (en) Induction cooker with multiple cooking ranges
US20230217552A1 (en) Power conversion device, electric range including same, and control method therefor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20200327

WW01 Invention patent application withdrawn after publication