CN114828317A - Multi-coil electromagnetic induction circuit and heating method - Google Patents
Multi-coil electromagnetic induction circuit and heating method Download PDFInfo
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- CN114828317A CN114828317A CN202210734368.5A CN202210734368A CN114828317A CN 114828317 A CN114828317 A CN 114828317A CN 202210734368 A CN202210734368 A CN 202210734368A CN 114828317 A CN114828317 A CN 114828317A
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- circuit
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- way switch
- electromagnetic induction
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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
- H05B6/06—Control, e.g. of temperature, of power
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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
- H05B6/06—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
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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
- H05B6/36—Coil arrangements
- H05B6/44—Coil arrangements having more than one coil or coil segment
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a multi-coil electromagnetic induction circuit and a heating method, wherein the multi-coil electromagnetic induction circuit comprises a controller, at least two inverter output circuits and a plurality of LC oscillating units, wherein each LC oscillating unit is connected with the plurality of inverter output circuits through a multi-way switch; the controller is connected with the multi-way switch, and when the large-scale pan that sets up on a plurality of LC vibrate the unit heats, control the multi-way switch through the controller to vibrate the unit through same contravariant output circuit and drive to LC.
Description
Technical Field
The invention relates to the field of electromagnetic induction heating, in particular to a multi-coil electromagnetic induction circuit and a heating method.
Background
In the field of multi-head electromagnetic ovens, in the prior art, a bridging or non-zone function is generally realized by high-speed time-sharing work of two heating units or common-frequency work of the two heating units, the control mode is very complex and the effect is not perfect, for example, when the time-sharing working mode is adopted, two furnace ends always have whining water sound when water is quickly turned on; when the same-frequency work is adopted, the two furnace ends are easy to interfere with each other at the starting moment to cause abnormal pot detection, and in addition, when the material difference of the load pots of the two furnace ends is larger, squealing sound can be given out. There is therefore a need for a multi-coil electromagnetic induction circuit and heating method that can solve the problem of howling when bridging or no zone function is present.
Disclosure of Invention
The invention mainly aims to provide a multi-coil electromagnetic induction circuit and a heating method, which can solve the problem of howling when a bridge or a no-zone function occurs.
The invention provides a multi-coil electromagnetic induction circuit, which comprises a controller, at least two inverter output circuits and a plurality of LC oscillating units, wherein each LC oscillating unit is connected with the inverter output circuits through a multi-way switch; the controller is connected with the multi-way switch, and when a large-scale pot tool arranged on the LC oscillating units is heated, the multi-way switch is controlled through the controller, so that the LC oscillating units are driven through the same inverter output circuit.
Preferably, the inverter output circuit is a half-bridge IGBT inverter circuit.
Preferably, the device further comprises a sensing device, and the controller is connected with the sensing device.
A heating method of a multi-coil electromagnetic induction circuit is characterized in that a heating area on an electromagnetic oven is identified through an induction device; the LC oscillating unit in the heating area of the single heating area is driven by the same inverter output circuit; the LC oscillating units in the same heating area are driven by the same inverter output circuit, and the LC oscillating units in different heating areas are driven by different inverter output circuits.
The multi-coil electromagnetic induction circuit and the heating method have the beneficial effects that:
according to the multi-coil electromagnetic induction circuit, the LC oscillating units are connected with the plurality of inverter output circuits through the multi-way switch, so that the required inverter output circuits can be switched according to use requirements, when a plurality of LC oscillating units are required to drive a single cooker, each LC oscillating unit can be driven by the same inverter output circuit, the problem of howling caused by bridging or no-zone function can be solved, and the design purpose is realized.
Drawings
Fig. 1 is a flow chart of a multi-coil electromagnetic induction circuit and a heating method according to the present invention.
Fig. 2 is a block diagram of the driving end of the multi-coil electromagnetic induction circuit and the heating method of the present invention.
Fig. 3 is a block diagram of the working end of the multi-coil electromagnetic induction circuit and the heating method of the present invention.
Fig. 4 is a layout diagram of one embodiment of an LC oscillating unit of the multi-coil electromagnetic induction circuit and the heating method of the present invention.
Fig. 5 is a layout diagram of another embodiment of an LC oscillating unit of the multi-coil electromagnetic induction circuit and the heating method of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 5, an embodiment of a multi-coil electromagnetic induction circuit and a heating method of the present invention is provided:
the utility model provides a multi-coil electromagnetic induction circuit, includes controller, induction system, first half-bridge relay ka, second half-bridge relay kb, first half-bridge IGBT inverter circuit, second half-bridge IGBT inverter circuit, first LC vibrate unit, second LC vibrate unit, third LC vibrate unit, fourth LC vibrate unit, fifth LC vibrate unit, sixth LC vibrate unit, seventh LC vibrate unit, eighth LC vibrate unit and ninth LC vibrate unit.
The sensing device is connected with the controller. The controller controls the first half-bridge IGBT inverter circuit to work through the first half-bridge relay ka, and the controller controls the second half-bridge IGBT inverter circuit to work through the second half-bridge relay kb.
First LC vibrates the unit and is connected with first multi-way switch K102 through first control relay K101, and rethread first multi-way switch K102 is connected with first half-bridge IGBT inverter circuit and second half-bridge IGBT inverter circuit respectively.
The second LC oscillating unit is connected with a second multi-way switch K202 through a second control relay K201, and then the second multi-way switch K202 is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit.
The third LC oscillating unit is connected with a third multi-way switch K302 through a third control relay K301, and then the third multi-way switch K302 is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit.
The fourth LC oscillating unit is connected with a fourth multi-way switch K402 through a fourth control relay K401, and then the fourth multi-way switch K402 is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit.
The fifth LC oscillating unit is connected with a fifth multi-way switch K502 through a fifth control relay K501, and then is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit through the fifth multi-way switch K502.
The sixth LC oscillating unit is connected with a sixth multi-way switch K602 through a sixth control relay K601, and then the sixth multi-way switch K602 is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit.
The seventh LC oscillating unit is connected with a seventh multi-way switch K702 through a seventh control relay K701, and then is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit through the seventh multi-way switch K702.
The eighth LC oscillating unit is connected with an eighth multi-way switch K802 through an eighth control relay K801, and then the eighth multi-way switch K802 is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit.
The ninth LC oscillating unit is connected with a ninth multi-way switch K902 through a ninth control relay K901, and then the ninth multi-way switch K902 is respectively connected with the first half-bridge IGBT inverter circuit and the second half-bridge IGBT inverter circuit.
A heating method based on the above-mentioned multi-coil electromagnetic induction circuit:
the LC oscillating unit layout on the induction cooker is as shown in figure 4;
1) identifying a heating area by an induction device;
2) judging the position, size and number of the heating area;
3) if there is only one heating area and the single LC oscillating unit is provided, for example, the first LC oscillating unit, it is determined that there is only one pot, the default first half-bridge IGBT inverter circuit is used for driving, the first half-bridge relay ka is closed, the first control relay K101 is closed, and the first multi-way switch K102 is communicated with the first half-bridge IGBT inverter circuit and the first LC oscillating unit, so that the first LC oscillating unit is driven to work through the first half-bridge IGBT inverter circuit;
if there is only one heating area and the plurality of LC oscillating units, such as the first LC oscillating unit, the second LC oscillating unit, the fourth LC oscillating unit and the fifth LC oscillating unit, determine that there is only one large pot, and drive the pot by using the default first half-bridge IGBT inverter circuit; the first half-bridge relay ka is closed, the first control relay K101 is closed, and the first multi-way switch K102 is communicated with the first half-bridge IGBT inverter circuit and the first LC oscillating unit; the second control relay K201 is closed, and the second multi-way switch K202 is communicated with the first half-bridge IGBT inverter circuit and the second LC oscillating unit; the fourth control relay K401 is closed, and the fourth multi-way switch K402 is communicated with the first half-bridge IGBT inverter circuit and the fourth LC oscillating unit; the fifth control relay K501 is closed, and the fifth multi-way switch K502 is communicated with the first half-bridge IGBT inverter circuit and the fifth LC oscillating unit; therefore, the first half-bridge IGBT inverter circuit drives the first LC oscillating unit, the second LC oscillating unit, the fourth LC oscillating unit and the fifth LC oscillating unit to work;
if the heating region has two, and on single LC vibrates the unit, for example on first LC vibrates the unit and the ninth vibrates the unit, then judge that there are two pans, then first LC vibrates the unit and adopts first half-bridge IGBT inverter circuit to drive, and the ninth LC vibrates the unit and adopts second half-bridge IGBT inverter circuit to drive.
If the heating area has two, and on a plurality of LC shock units, for example on first LC shock unit, second LC shock unit, eighth LC shock unit and ninth LC shock unit, then judge that there are two big pans, then first LC shock unit and second LC shock unit adopt first half-bridge IGBT inverter circuit to drive, and eighth LC shock unit and ninth LC shock unit adopt second half-bridge IGBT inverter circuit to drive.
For an electromagnetic oven with higher complexity, if each LC oscillating unit is connected with a plurality of half-bridge IGBT inverter circuits, the circuit complexity inside the electromagnetic oven is too high, and as shown in the LC oscillating unit layout in fig. 5, the first LC oscillating unit, the seventh LC oscillating unit and the thirteenth LC oscillating unit on the left side can be connected with only the first half-bridge IGBT inverter circuit. The sixth LC oscillating unit, the twelfth LC oscillating unit and the eighteenth LC oscillating unit on the right side are only connected with the first two-half-bridge IGBT inverter circuit, so that the complexity of the circuit can be reduced, and the control mode is consistent with that mentioned above.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A multi-coil electromagnetic induction circuit is characterized by comprising a controller, at least two inverter output circuits and a plurality of LC oscillating units, wherein each LC oscillating unit is connected with the inverter output circuits through a multi-way switch; the controller is connected with the multi-way switch, and when a large-scale pot tool arranged on the LC oscillating units is heated, the multi-way switch is controlled through the controller, so that the LC oscillating units are driven through the same inverter output circuit.
2. The multi-coil electromagnetic induction circuit of claim 1, wherein the inverting output circuit is a half-bridge IGBT inverter circuit.
3. The multi-coil electromagnetic induction circuit of claim 1, further comprising an induction device, wherein the controller is coupled to the induction device.
4. A heating method based on the multi-coil electromagnetic induction circuit of claim 3, characterized in that the heating area on the induction cooker is identified by an induction device; the LC oscillating unit in the heating area of the single heating area is driven by the same inverter output circuit; the LC oscillating units in the same heating area are driven by the same inverter output circuit, and the LC oscillating units in different heating areas are driven by different inverter output circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210734368.5A CN114828317A (en) | 2022-06-27 | 2022-06-27 | Multi-coil electromagnetic induction circuit and heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210734368.5A CN114828317A (en) | 2022-06-27 | 2022-06-27 | Multi-coil electromagnetic induction circuit and heating method |
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| CN114828317A true CN114828317A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210734368.5A Pending CN114828317A (en) | 2022-06-27 | 2022-06-27 | Multi-coil electromagnetic induction circuit and heating method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293933Y (en) * | 1997-05-07 | 1998-10-07 | 丘波岭 | Electromagnetic inductive heating device |
| WO2016010492A1 (en) * | 2014-07-15 | 2016-01-21 | Arçeli̇k Anoni̇m Şi̇rketi̇ | System and method for improving noise performance of multi-zone quasi-resonant inverter induction heater |
| US20160029439A1 (en) * | 2013-04-10 | 2016-01-28 | Panasonic Intellectual Property Management Co., Ltd. | Induction heater |
| US20190124726A1 (en) * | 2017-10-19 | 2019-04-25 | Lg Electronics Inc. | Induction heating device having improved target object detection accuracy and induction heating system including the same |
| US20220151430A1 (en) * | 2019-03-20 | 2022-05-19 | Electrolux Appliances Aktiebolag | Kitchen appliance |
-
2022
- 2022-06-27 CN CN202210734368.5A patent/CN114828317A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293933Y (en) * | 1997-05-07 | 1998-10-07 | 丘波岭 | Electromagnetic inductive heating device |
| US20160029439A1 (en) * | 2013-04-10 | 2016-01-28 | Panasonic Intellectual Property Management Co., Ltd. | Induction heater |
| WO2016010492A1 (en) * | 2014-07-15 | 2016-01-21 | Arçeli̇k Anoni̇m Şi̇rketi̇ | System and method for improving noise performance of multi-zone quasi-resonant inverter induction heater |
| US20190124726A1 (en) * | 2017-10-19 | 2019-04-25 | Lg Electronics Inc. | Induction heating device having improved target object detection accuracy and induction heating system including the same |
| US20220151430A1 (en) * | 2019-03-20 | 2022-05-19 | Electrolux Appliances Aktiebolag | Kitchen appliance |
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Application publication date: 20220729 |
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