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WO2019109586A1 - Circuit de commande de chauffage pour appareil de cuisson à induction, et appareil de cuisson à induction - Google Patents

Circuit de commande de chauffage pour appareil de cuisson à induction, et appareil de cuisson à induction Download PDF

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Publication number
WO2019109586A1
WO2019109586A1 PCT/CN2018/085002 CN2018085002W WO2019109586A1 WO 2019109586 A1 WO2019109586 A1 WO 2019109586A1 CN 2018085002 W CN2018085002 W CN 2018085002W WO 2019109586 A1 WO2019109586 A1 WO 2019109586A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
switch
coil disk
series
disk
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.)
Ceased
Application number
PCT/CN2018/085002
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English (en)
Chinese (zh)
Inventor
曾宪光
张由之
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.)
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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 Midea Group Co Ltd, Guangdong Midea Kitchen Appliances Manufacturing Co Ltd filed Critical Midea Group Co Ltd
Priority to EP18885968.0A priority Critical patent/EP3678454A4/fr
Publication of WO2019109586A1 publication Critical patent/WO2019109586A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • 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
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils

Definitions

  • the present invention relates to the field of electrical appliances, and in particular to a heating control circuit and an electromagnetic cooking appliance for an electromagnetic cooking appliance.
  • the induction cooker mainly drives a coil disk to generate an alternating magnetic field through a high-power switching device (such as an IGBT (Insulated Gate Bipolar Transistor)), so that the pot in which it is heated raises the temperature to achieve the purpose of heating.
  • a high-power switching device such as an IGBT (Insulated Gate Bipolar Transistor)
  • the control method does not have hardware for the circuit (for example, a resonant capacitor, a coil disk, a switching device). Etc.) to maximize utilization.
  • embodiments of the present invention provide a heating control circuit for an electromagnetic cooking appliance, the heating control circuit comprising: two or more control circuits, wherein one of the two or more control circuits The control circuit includes two or more coil disks, each of the control circuits other than the one of the two or more control circuits including one or more coil disks, and Each of the two or more control circuits includes a voltage source, a power switch, and a capacitor; one or more switches coupled within the two or more control circuits and Between the two or more control circuits; and a controller for implementing by controlling a power switch tube and the one or more switches in each of the two or more control circuits Heating of a series combination of any two or more of the coil disks in the two or more control circuits.
  • embodiments of the present invention also provide an electromagnetic cooking appliance including the above-described heating control circuit.
  • the coil disks in different control circuits can be connected in series to achieve precise control of different heating positions in the same area.
  • the full utilization of the hardware in the circuit can be achieved, and the power output performance of the induction cooker is improved.
  • Figure 1 shows a combined schematic view of four coil disks
  • FIG. 2 illustrates a heating control circuit for an electromagnetic cooking appliance in accordance with an embodiment of the present invention
  • FIG. 3 illustrates a heating control circuit for an electromagnetic cooking appliance in accordance with an embodiment of the present invention
  • FIG. 4 illustrates a heating control circuit for an electromagnetic cooking appliance in accordance with an embodiment of the present invention
  • Figure 5 illustrates a heating control circuit for an electromagnetic cooking appliance in accordance with an embodiment of the present invention.
  • Embodiments of the present invention provide a heating control circuit for an electromagnetic cooking appliance
  • the heating control circuit may include: two or more control circuits, wherein one of the two or more control circuits may include two Or one or more coil disks, wherein the control circuit other than the one control circuit of the two or more control circuits may include one or more coil disks, and wherein the two or more control circuits are
  • Each of the control circuits can include a voltage source, a power switch, and a capacitor; one or more switches coupled within the two or more control circuits and the two or more controls And between the circuits for implementing the two or more controls by controlling a power switch tube and the one or more switches in each of the two or more control circuits Heating of a series combination of any two or more of the coil disks in the circuit.
  • the heating control circuit provided by the embodiment of the invention can perform time-series combined control of at least two coil disks at different positions in the same area, thereby accurately controlling the heating position.
  • the voltage source included in each of the two or more control circuits may be a homogenous voltage source, wherein the negative terminals of each voltage source may be connected to a common ground.
  • the voltage source can be a single phase voltage source or a multi-phase voltage source.
  • each control circuit two power switch tubes and two capacitors may be included, wherein the two power switch tubes are connected in series and then connected in parallel at both ends of the voltage source, and the two capacitors are connected in series and then connected in parallel Both ends of the voltage source.
  • the coil disks in each control circuit are connected in series, one end of the coil disk connected in series is connected to an end point between the two power switch tubes, and the other end is connected to an end point between the two capacitors.
  • the heating control circuit for the electromagnetic cooking appliance provided by the embodiment of the invention may include a first control circuit and a second control circuit, and the first control circuit and the second control circuit may respectively comprise two coil disks.
  • Figure 1 shows a combined schematic view of four coil disks. As shown in FIG. 1, the heating control circuit provided by the embodiment of the present invention can realize combined heating of any two or three coil disks, and can also realize combined heating of four coil disks.
  • any combination heating may be achieved: combined heating of the coil disk 10 and the coil disk 20; combined heating of the coil disk 20 and the coil disk 30; combined heating of the coil disk 10 and the coil disk 40; coil disk 30 and coil disk Combined heating of 40; combined heating of coil disk 10, coil disk 20 and coil disk 30; combined heating of coil disk 20, coil disk 30 and coil disk 40; coil disk 10, coil disk 20, coil disk 30 and coil disk 40 The combination of heating and the like.
  • the embodiment of the present invention is not limited thereto, and the first control circuit and the second control circuit may each include any number of coil disks according to control needs.
  • the heating control circuit for the electromagnetic cooking appliance includes two control circuits, each of which includes two coil disks as an example, and further describes the embodiment of the present invention.
  • Embodiments including more control circuits and/or more coil discs may be implemented with reasonable modifications on the basis of the embodiments described below, for example by rationally adding control circuitry and/or by adding switches This is achieved by reducing the switch or modifying the connection relationship of the switch.
  • the heating control circuit for the electromagnetic cooking appliance may include a first control circuit, a second control circuit, and a controller (not shown).
  • the first control circuit may include: a power switch tube SG1 and a power switch tube SG2, a coil disk 10 and a coil disk 20, a capacitor C1 and a capacitor C2, and a voltage source P1.
  • the second control circuit may include: a power switch tube SG3 and power The switch tube SG4, the coil disk 30 and the coil disk 40, the capacitor C3 and the capacitor C4, and the voltage source P2.
  • the voltage source P1 and the voltage source P2 are homogenous AC voltage sources, and the voltage source P1 and the cathode of the voltage source P2 are both connected to a common ground.
  • the voltage source P1 and the voltage source P2 may be a single-phase voltage source or a multi-phase voltage source.
  • the power switch tube SG1 and the power switch tube SG2 are connected in series and then connected in parallel at both ends of the voltage source P1.
  • the capacitor C1 and the capacitor C2 are connected in series and then connected in parallel at both ends of the first voltage source P1.
  • the disk 10 and the coil disk 20 are connected in series, and one end of the coil disk 10 and the coil disk 20 connected in series is connected to the end point 11 between the power switch tube SG1 and the power switch tube SG2, and the other end is connected to the capacitor C1 and the second capacitor.
  • the endpoints 12 between C2 are connected.
  • One end of the coil disk 10 is connected to the end point 11, the other end of the coil disk 20 is connected to one end of the coil disk 20, and the other end of the coil disk 20 is connected to the end point 12.
  • the first control circuit may further include: a switch S1 connected in series between the end point 11 and one end of the coil disc 10 and the coil disc 20; the switch S2, the switch S2 is connected in series between the coil disc 10 and the coil disc 20; And a switch S3 connected in series between the terminal 12 and the coil disk 10 and the other end of the coil disk 20 in series.
  • the power switch tube SG3 and the power switch tube SG4 are connected in series and then connected in parallel at both ends of the voltage source P2, and the capacitor C3 and the capacitor C4 are connected in series and then connected in parallel at both ends of the voltage source P2, the coil plate 30 and the coil plate 40.
  • one end of the coil bobbin 30 and the coil disc 40 connected in series is connected to the end point 13 between the power switch tube SG3 and the power switch tube SG4 and the other end is connected to the end point 14 between the capacitor C3 and the capacitor C4.
  • One end of the coil disk 30 is connected to the end point 13, the other end of the coil disk 30 is connected to one end of the coil disk 40, and the other end of the coil disk 40 is connected to the end point 14.
  • the second control circuit may further include: a switch S7 connected in series between the end point 13 and one end of the coil disc 30 and the coil disc 40; the switch S8, the switch S8 is connected in series between the coil disc 30 and the coil disc 40; And switch S9, which is connected in series between the end point 14 and the coil disc 30 and the other end of the coil disc 40.
  • the heating control circuit shown in FIG. 2 may further include: a switch S4 having one end connected between the terminal 11 and the switch S1, the other end of the switch S4 being connected between the terminal 13 and the switch S7; the switch S5, the switch S5 One end is connected between the other end of the coil disk 10 and the switch S2, the other end of the switch S5 is connected between the other end of the coil disk 30 and the switch S8; and the switch S6 is connected at one end of the switch S6 to the coil disk 20 Between one end and the switch S3, the other end of the switch S6 is connected between the other end of the coil disk 40 and the switch S9.
  • the controller can achieve combined heating between the coil disk 10 and the coil disk 40 by controlling the power switch tube SG1 to the power switch tube SG4 and the switches S1 to S9.
  • the power switch tube used in the embodiments of the present invention may be a high power switching device, such as an IGBT, or may be a high power relay or the like.
  • the power switch tube is a one-way pass device.
  • the controller can cause the coil disk 10 in the first control circuit and the coil disk 40 in the second control circuit to be connected in series by controlling the power switch tubes SG1 to SG4 and the switch S7 to the switch S9 to achieve both The combination is heated or the coil disk 20 in the first control circuit and the coil disk 30 in the second control circuit are connected in series to effect combined heating of the two.
  • the controller may cause the coil disk 10 and the coil disk 20 in the first control circuit to be combinedly heated by controlling the power switch tubes SG1 to SG4 and the switch S7 to the switch S9 to be turned on and off, and/or may cause the second control circuit
  • the coil disk 30 and the coil disk 40 in combination are heated.
  • the controller can control the combined heating of the coil disk 20 and the coil disk 30.
  • the controller in the first half of one cycle of the AC voltage, can control the switch S7, the switch S5, the switch S2, the switch S3, and the power switch tube SG3 to be turned on, and control the remaining switches and the power switch tube to be disconnected.
  • the current flow direction in the first half cycle is: the positive pole of the voltage source P2 ⁇ the power switch tube SG3 ⁇ the switch S7 ⁇ the coil disk 30 ⁇ Switch S5 ⁇ Switch S2 ⁇ coil disk 20 ⁇ switch S3 ⁇ capacitor C2 ⁇ negative pole of voltage source P1.
  • the controller may control the switch S7, the switch S5, the switch S2, the switch S6, the switch S9, and the power switch tube SG3 to be turned on, and control the remaining switches and power switches
  • the tube is disconnected so that the coil disk 20, the coil disk 30, the power switch tube SG3 and the capacitor C4 are connected in series to form a resonant circuit.
  • the current flows in the positive direction of the voltage source P2 ⁇ the power switch tube SG3 ⁇ the switch S7 ⁇ Coil disk 30 ⁇ switch S5 ⁇ switch S2 ⁇ coil disk 20 ⁇ switch S6 ⁇ switch S9 ⁇ capacitor C4 ⁇ negative pole of voltage source P2.
  • the controller can control the switch S9, the switch S6, the switch S2, the switch S5, the switch S7, the switch S4, and the power switch tube SG2 to be turned on, and control the remaining switches and the power switch tube to be off.
  • the current flow in the second half cycle is: positive electrode of the voltage source P2 ⁇ capacitor C3 ⁇ switch S9 ⁇ switch S6 ⁇ Coil disk 20 ⁇ switch S2 ⁇ switch S5 ⁇ coil disk 30 ⁇ switch S7 ⁇ switch S4 ⁇ power switch tube SG2 ⁇ negative electrode of voltage source P1.
  • the controller may control the switch S9, the switch S6, the switch S2, the switch S5, the switch S7, and the power switch tube SG4 to be turned on, and control the remaining switches and the power switch tube to be disconnected.
  • the current flow in the second half cycle is: positive pole of the voltage source P2 ⁇ capacitor C3 ⁇ switch S9 ⁇ switch S6 ⁇ coil Disk 20 ⁇ switch S2 ⁇ switch S5 ⁇ coil disk 30 ⁇ switch S7 ⁇ power switch tube SG4 ⁇ negative electrode of voltage source P2.
  • the controller can also control the combined heating of the coil disk 10 and the coil disk 40.
  • the controller in this case, in the first half of one cycle of the AC voltage, can control the switch S1, the switch S5, the switch S8, the switch S9, and the power switch tube SG1 to be turned on, and control the remaining switches. Disconnected from the power switch tube, so that the coil disk 10, the coil disk 40, the power switch tube SG1 and the capacitor C4 are connected in series to form a resonant circuit.
  • the controller can control the switch S3, the switch S6, the switch S8, the switch S5, the switch S1, the switch S4, and the power switch tube SG4 to be turned on, and control the remaining switches and the power switch tube to be off.
  • the current flow in the first half cycle is: positive electrode of the voltage source P1 ⁇ capacitor C1 ⁇ switch S3 ⁇ switch S6 ⁇ coil Disk 40 ⁇ switch S8 ⁇ switch S5 ⁇ coil disk 10 ⁇ switch S1 ⁇ switch S4 ⁇ power switch tube SG4.
  • the controller can control the combined heating of the coil disk 10 and the coil disk 20.
  • the controller can control the switches S1 to S3 to be turned on and the switches S4 to S9 to be turned off.
  • the controller can control the power switch tube SG1 to be turned on so that the coil disk 10, the coil disk 20, the power switch tube SG1, and the capacitor C2 are connected in series to form a resonant circuit, and the current is in the first half cycle.
  • the flow direction is: positive pole of voltage source P1 ⁇ power switch tube SG1 ⁇ switch S1 ⁇ coil disk 10 ⁇ switch S2 ⁇ coil disk 20 ⁇ switch S3 ⁇ capacitor C2 ⁇ negative pole of voltage source P1.
  • the controller can control the power switch tube SG2 to be turned on so that the coil disk 10, the coil disk 20, the power switch tube SG2, and the capacitor C1 are connected in series to form a resonant circuit, in the second half cycle.
  • the current flow direction is: positive pole of voltage source P1 ⁇ capacitor C1 ⁇ switch S3 ⁇ coil disk 20 ⁇ switch S2 ⁇ coil disk 10 ⁇ switch S1 ⁇ power switch tube SG2 ⁇ negative pole of voltage source P1.
  • the controller can control the combined heating of the coil disk 30 and the coil disk 40.
  • the controller can control the switch S7 to the switch S9 to be turned on and control the switches S1 to S6 to be turned off.
  • the controller can control the power switch tube SG3 to be turned on so that the coil disk 30, the coil disk 40, the power switch tube SG3, and the capacitor C4 are connected in series to form a resonant circuit, and the current is in the first half cycle.
  • the flow direction is: positive pole of voltage source P2 ⁇ power switch tube SG3 ⁇ switch S7 ⁇ coil disk 30 ⁇ switch S8 ⁇ coil disk 40 ⁇ switch S9 ⁇ capacitor C4 ⁇ negative pole of voltage source P2.
  • the controller can control the power switch tube SG4 to be turned on so that the coil disk 30, the coil disk 40, the power switch tube SG4, and the capacitor C3 are connected in series to form a resonant circuit, in the second half cycle.
  • the current flow direction is: positive pole of voltage source P2 ⁇ capacitor C3 ⁇ switch S9 ⁇ coil disk 40 ⁇ switch S8 ⁇ coil disk 30 ⁇ switch S7 ⁇ power switch tube SG4 ⁇ negative pole of voltage source P2.
  • the controller can also implement combined heating of the coil disk 10, the coil disk 20, the coil disk 30, and the coil disk 40.
  • the switch S4 to the switch S6 can be controlled to be turned off, and the control switch S1 to the switch S3 and the switch S7 to the switch S9 can be turned on.
  • the power switch tube SG1 and the power switch tube SG3 can be controlled to be turned on, and the power switch tube SG2 and the power switch tube SG4 can be controlled to be disconnected.
  • the control power switch tube SG2 and the power switch tube SG4 are turned on, and the power switch tube SG1 and the power switch tube SG3 are controlled to be disconnected, thereby realizing the coil disk 10, the coil disk 20, and the coil. Both the disk 30 and the coil disk 40 operate.
  • FIG. 3 illustrates a heating control circuit for an electromagnetic cooking appliance in accordance with an embodiment of the present invention.
  • the heating control circuit for the electromagnetic cooking appliance may include a first control circuit, a second control circuit, and a controller (not shown).
  • the first control circuit may include: a power switch tube SG1 and a power switch tube SG2, a coil disk 10 and a coil disk 20, a capacitor C1 and a capacitor C2, and a voltage source P1.
  • the second control circuit may include: a power switch tube SG3 and power The switch tube SG4, the coil disk 30 and the coil disk 40, the capacitor C3 and the capacitor C4, and the voltage source P2.
  • the voltage source P1 and the voltage source P2 are homogenous AC voltage sources, and the voltage source P1 and the cathode of the voltage source P2 are both connected to a common ground.
  • the voltage source P1 and the voltage source P2 may be a single-phase voltage source or a multi-phase voltage source.
  • the power switch tube SG1 and the power switch tube SG2 are connected in series and then connected in parallel at both ends of the voltage source P1.
  • the capacitor C1 and the capacitor C2 are connected in series and then connected in parallel at both ends of the first voltage source P1.
  • the disk 10 and the coil disk 20 are connected in series, and one end of the coil disk 10 and the coil disk 20 connected in series is connected to the end point 11 between the power switch tube SG1 and the power switch tube SG2, and the other end is connected to the capacitor C1 and the second capacitor.
  • the endpoints 12 between C2 are connected.
  • One end of the coil disk 10 is connected to the end point 11, the other end of the coil disk 20 is connected to one end of the coil disk 20, and the other end of the coil disk 20 is connected to the end point 12.
  • the power switch tube SG3 and the power switch tube SG4 are connected in series and then connected in parallel at both ends of the voltage source P2, and the capacitor C3 and the capacitor C4 are connected in series and then connected in parallel at both ends of the voltage source P2, the coil plate 30 and the coil plate 40.
  • one end of the coil bobbin 30 and the coil disc 40 connected in series is connected to the end point 13 between the power switch tube SG3 and the power switch tube SG4 and the other end is connected to the end point 14 between the capacitor C3 and the capacitor C4.
  • One end of the coil disk 30 is connected to the end point 13, the other end of the coil disk 30 is connected to one end of the coil disk 40, and the other end of the coil disk 40 is connected to the end point 14.
  • the heating control circuit shown in FIG. 3 may further include: a single pole double throw switch S31 and a single pole double throw switch S32.
  • the single-pole double-throw switch S31 is connected in series between the end point 11 and one end of the coil disc 10 and the coil disc 20, wherein the free end a of the single-pole double-throw switch S31 is connected to the end point 11, and the single-pole double-throw switch S31 A fixed end b is connected to the coil disc 10 and the coil disc 20 in series, and the other fixed end c of the single-pole double-throw switch S31 is connected to the end point 13 and the coil disc 30 and the coil disc 40 connected in series. Between one end.
  • the single-pole double-throw switch S32 is connected in series between the coil disk 30 and the coil disk 40, wherein the free end a of the single-pole double-throw switch S32 is connected to the coil disk 30, and a fixed end b of the single-pole double-throw switch S32 and the coil
  • the disk 40 is connected, and the other fixed end c of the single-pole double-throw switch S32 is connected between the coil disk 10 and the coil disk 20.
  • the controller can achieve combined heating between the coil disk 10 and the coil disk 40 by controlling the power switch tube SG1 to the power switch tube SG4, the switch S31, and the switch S32.
  • the power switch tube used in the embodiments of the present invention may be a high power switching device, such as an IGBT, or may be a high power relay or the like.
  • the power switch tube is a one-way pass device.
  • the controller can achieve combined heating of the coil disk 20 and the coil disk 30.
  • the controller can control the free end a of the single-pole double-throw switch S31 to be connected to the fixed end c, and the free end a of the single-pole double-throw switch S32 to be connected to the fixed end b.
  • the controller can control the power switch SG1 to be turned on so that the coil disk 30, the coil disk 20, the power switch tube SG1, and the capacitor C2 are connected in series to form a resonant circuit.
  • the controller can control the power switch tube SG2 to be turned on such that the coil disk 30, the coil disk 20, the power switch tube SG2, and the capacitor C1 are connected in series to form a resonant circuit.
  • the controller can also achieve combined heating of the coil disk 10 and the coil disk 20.
  • the controller can control the free end a of the single-pole double-throw switch S31 to be connected to the fixed end b, and in the first half of one cycle of the alternating voltage, the controller can control the power switch tube SG1 to be turned on to make the coil disk 10.
  • the coil disk 20, the power switch tube SG1 and the capacitor C2 are connected in series to form a resonant circuit.
  • the controller can control the power switch tube SG2 to be turned on such that the coil disk 10, the coil disk 20, the power switch tube SG2, and the capacitor C1 are connected in series to form a resonant circuit.
  • the controller can also implement combined heating of the coil disk 30 and the coil disk 40.
  • the controller can control the free end a of the single-pole double-throw switch S32 to be connected to the fixed end c, and in the first half of one cycle of the alternating voltage, the controller can control the power switch tube SG3 to be turned on to make the coil disk 30
  • the coil disk 40, the power switch tube SG3 and the capacitor C4 are connected in series to form a resonant circuit.
  • the controller can control the power switch SG4 to be turned on such that the coil disk 30, the coil disk 40, the power switch tube SG4, and the capacitor C3 are connected in series to form a resonant circuit.
  • the controller can also implement combined heating of the coil disk 10, the coil disk 20, the coil disk 30, and the coil disk 40.
  • the free end a of the single-pole double-throw switch S31 can be controlled to be connected to the fixed end b
  • the free end a of the single-pole double-throw switch S32 can be controlled to be connected to the fixed end c.
  • the power switch tube SG1 and the power switch tube SG3 can be controlled to be turned on, and the power switch tube SG2 and the power switch tube SG4 can be controlled to be disconnected.
  • the control power switch tube SG2 and the power switch tube SG4 are turned on, and the power switch tube SG1 and the power switch tube SG3 are controlled to be disconnected, thereby realizing the coil disk 10, the coil disk 20, and the coil. Both the disk 30 and the coil disk 40 operate.
  • the heating control circuit for the electromagnetic cooking appliance may include a first control circuit, a second control circuit, and a controller (not shown).
  • the first control circuit may include: a power switch tube SG1 and a power switch tube SG2, a coil disk 10 and a coil disk 20, a capacitor C1 and a capacitor C2, and a voltage source P1.
  • the second control circuit may include: a power switch tube SG3 and power The switch tube SG4, the coil disk 30 and the coil disk 40, the capacitor C3 and the capacitor C4, and the voltage source P2.
  • the voltage source P1 and the voltage source P2 are homogenous AC voltage sources, and the voltage source P1 and the cathode of the voltage source P2 are both connected to a common ground.
  • the voltage source P1 and the voltage source P2 may be a single-phase voltage source or a multi-phase voltage source.
  • the power switch tube SG1 and the power switch tube SG2 are connected in series and then connected in parallel at both ends of the voltage source P1.
  • the capacitor C1 and the capacitor C2 are connected in series and then connected in parallel at both ends of the first voltage source P1.
  • the disk 10 and the coil disk 20 are connected in series, and one end of the coil disk 10 and the coil disk 20 connected in series is connected to the end point 11 between the power switch tube SG1 and the power switch tube SG2, and the other end is connected to the capacitor C1 and the second capacitor.
  • the endpoints 12 between C2 are connected.
  • One end of the coil disk 20 is connected to the first end point 11, the other end of the coil disk 20 is connected to one end of the coil disk 10, and the other end of the coil disk 10 is connected to the end point 12.
  • the power switch tube SG3 and the power switch tube SG4 are connected in series and then connected in parallel at both ends of the voltage source P2, and the capacitor C3 and the capacitor C4 are connected in series and then connected in parallel at both ends of the voltage source P2, the coil plate 30 and the coil plate 40.
  • one end of the coil bobbin 30 and the coil disc 40 connected in series is connected to the end point 13 between the power switch tube SG3 and the power switch tube SG4 and the other end is connected to the end point 14 between the capacitor C3 and the capacitor C4.
  • One end of the coil disk 30 is connected to the end point 13, the other end of the coil disk 30 is connected to one end of the coil disk 40, and the other end of the coil disk 40 is connected to the end point 14.
  • One end of the coil disk 40 is connected to the end point 13, the other end of the coil disk 40 is connected to one end of the coil disk 30, and the other end of the coil disk 30 is connected to the end point 14.
  • the switch S1 to the switch S4 may be further included in the heating control circuit.
  • the switch S1 is connected in series between the coil disk 10 and the coil disk 20; one end of the switch S2 is connected between the switch S1 and the coil disk 20, and the other end of the switch S2 is connected between the coil disk 30 and the coil disk 40; the switch S3 One end is connected between the other end of the coil disk 10 and the end point 12, the other end of the switch S3 is connected between the other end of the coil disk 30 and the switch S4; and the switch S4 is connected in series to the coil disk 30 and the coil in series. Between the other end of the disk 40 and the end point 14.
  • the controller can control the combined heating of the coil disk 20 and the coil disk 30.
  • the controller can control the switch S2 and the switch S3 to be turned on, and control the switch S1 and the switch S4 to be turned off.
  • the controller can control the power switch SG1 to be turned on so that the coil disk 30, the coil disk 20, the power switch tube SG1, and the capacitor C2 are connected in series to form a resonant circuit.
  • the controller can control the power switch tube SG2 to be turned on such that the coil disk 30, the coil disk 20, the power switch tube SG2, and the capacitor C1 are connected in series to form a resonant circuit.
  • the controller can also control the combined heating of the coil disk 10 and the coil disk 20.
  • the controller can control the switch S1 to be turned on and control the switches S2 and S3 to open.
  • the controller can control the power switch SG1 to be turned on such that the coil disk 10, the coil disk 20, the power switch tube SG1, and the capacitor C2 are connected in series to form a resonant circuit.
  • the controller can control the power switch tube SG2 to be turned on such that the coil disk 10, the coil disk 20, the power switch tube SG2, and the capacitor C1 are connected in series to form a resonant circuit.
  • the controller can also implement combined heating of the coil disk 30 and the coil disk 40.
  • the controller can control the switch S4 to be turned on and control the switches S2 and S3 to be turned off.
  • the controller can control the power switch tube SG3 to be turned on to make the coil disk 30 and the coil.
  • the disk 40, the power switch tube SG3 and the capacitor C4 are connected in series to form a resonant circuit.
  • the controller can control the power switch SG4 to be turned on such that the coil disk 30, the coil disk 40, the power switch tube SG4, and the capacitor C3 are connected in series to form a resonant circuit.
  • the controller can also implement combined heating of the coil disk 10, the coil disk 20, the coil disk 30, and the coil disk 40. For example, it is possible to control the switch S1 and the switch S4 to be turned on, and to control the switch S2 and the switch S3 to be turned off. In the first half of one cycle of the AC voltage, the power switch tube SG1 and the power switch tube SG3 can be controlled to be turned on, and the power switch tube SG2 and the power switch tube SG4 can be controlled to be disconnected.
  • the control power switch tube SG2 and the power switch tube SG4 are turned on, and the power switch tube SG1 and the power switch tube SG3 are controlled to be disconnected, thereby realizing the coil disk 10, the coil disk 20, and the coil. Both the disk 30 and the coil disk 40 operate.
  • the switch S4 in the circuit shown in Fig. 4 can also be replaced with a wire.
  • one end of the switch S3 is connected between the other end of the coil disk 10 and the end point 12, and the other end of the switch S3 is connected to the other end of the coil disk 30, as compared with the circuit shown in Fig. 4 before the replacement.
  • the endpoint 14 and Figure 14 as shown in Figure 5.
  • the controller can control the combined heating of the coil disk 20 and the coil disk 30.
  • the controller can control the switch S2 to be turned on, and control the switch S1, the switch S3, and the switch S4 to be turned off.
  • the controller can control the power switch SG1 to be turned on so that the coil disk 20, the coil disk 30, the power switch tube SG1, and the capacitor C4 are connected in series to form a resonant circuit.
  • the controller can control the power switch tube SG2 to be turned on such that the coil disk 30, the coil disk 20, the power switch tube SG2, and the capacitor C3 are connected in series to form a resonant circuit.
  • the controller can also control the combined heating of the coil disk 10 and the coil disk 20.
  • the controller can control the switch S1 to be turned on and control the switches S2 and S3 to open.
  • the controller can control the power switch SG1 to be turned on such that the coil disk 10, the coil disk 20, the power switch tube SG1, and the capacitor C2 are connected in series to form a resonant circuit.
  • the controller can control the power switch tube SG2 to be turned on such that the coil disk 10, the coil disk 20, the power switch tube SG2, and the capacitor C1 are connected in series to form a resonant circuit.
  • the controller can also implement combined heating of the coil disk 30 and the coil disk 40.
  • the controller can control the switches S2 and S3 to be disconnected.
  • the controller can control the power switch tube SG3 to be turned on to make the coil disk 30, the coil disk 40, and the power switch tube. SG3 and capacitor C4 are connected in series to form a resonant circuit.
  • the controller can control the power switch SG4 to be turned on such that the coil disk 30, the coil disk 40, the power switch tube SG4, and the capacitor C3 are connected in series to form a resonant circuit.
  • the controller can also implement combined heating of the coil disk 10, the coil disk 20, the coil disk 30, and the coil disk 40.
  • the power switch tube SG1 and the power switch tube SG3 can be controlled to be turned on, and the power switch tube SG2 and the power switch tube SG4 can be controlled to be disconnected.
  • the control power switch tube SG2 and the power switch tube SG4 are turned on, and the power switch tube SG1 and the power switch tube SG3 are controlled to be disconnected, thereby realizing the coil disk 10, the coil disk 20, and the coil. Both the disk 30 and the coil disk 40 operate.
  • an embodiment of the present invention further provides an electromagnetic cooking appliance, which may be, for example, an induction cooker or the like, and the electromagnetic cooking appliance may include a heating control circuit according to any embodiment of the present invention.
  • the electromagnetic cooking appliance can achieve precise control of the heating position.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

Des modes de réalisation de la présente invention concernent un circuit de commande de chauffage pour un appareil de cuisson à induction, et un appareil de cuisson à induction, appartenant au domaine des appareils électroniques. Le circuit de commande de chauffage comprend au moins deux circuits de commande, l'un desdits deux circuits de commande comprenant au moins deux plaques de bobine, tandis que chacun des autres circuits de commande, à l'exclusion du circuit de commande susmentionné, comprend une ou plusieurs plaques de bobine, et chacun des circuits de commande comprend respectivement une source de tension, un transistor de commutation de courant et un condensateur ; un ou plusieurs commutateurs connectés à l'intérieur desdits deux circuits de commande et entre lesdits deux circuits de commande ; et un dispositif de commande configuré pour commander le transistor de commutation de courant et lesdits commutateurs dans chacun des circuits de commande, de manière à fournir un chauffage à l'aide d'une combinaison connectée en série constituée d'au moins deux des plaques de bobine dans lesdits deux circuits de commande. L'invention permet d'obtenir une commande précise de différentes positions de chauffage dans la même région.
PCT/CN2018/085002 2017-12-08 2018-04-28 Circuit de commande de chauffage pour appareil de cuisson à induction, et appareil de cuisson à induction Ceased WO2019109586A1 (fr)

Priority Applications (1)

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EP18885968.0A EP3678454A4 (fr) 2017-12-08 2018-04-28 Circuit de commande de chauffage pour appareil de cuisson à induction, et appareil de cuisson à induction

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CN201711297137.8 2017-12-08
CN201711297137.8A CN108156684B (zh) 2017-12-08 2017-12-08 用于电磁烹饪器具的加热控制电路及电磁烹饪器具

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CN111787654B (zh) * 2019-04-03 2025-08-15 佛山市顺德区美的电热电器制造有限公司 电磁烹饪器具的加热电路及电磁烹饪器具
CN110099470A (zh) * 2019-05-17 2019-08-06 佛山市顺德区天思电器有限公司 一种电磁炉线圈盘的控制装置
KR20250043241A (ko) * 2023-09-21 2025-03-28 엘지전자 주식회사 조리기기

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EP3678454A1 (fr) 2020-07-08
EP3678454A4 (fr) 2020-11-18
CN108156684B (zh) 2019-07-05

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