WO2019119640A1 - 电磁烹饪器具及其功率控制方法 - Google Patents

电磁烹饪器具及其功率控制方法 Download PDF

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Publication number
WO2019119640A1
WO2019119640A1 PCT/CN2018/077600 CN2018077600W WO2019119640A1 WO 2019119640 A1 WO2019119640 A1 WO 2019119640A1 CN 2018077600 W CN2018077600 W CN 2018077600W WO 2019119640 A1 WO2019119640 A1 WO 2019119640A1
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WIPO (PCT)
Prior art keywords
coil disk
cooking appliance
heating
coil
electromagnetic cooking
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PCT/CN2018/077600
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English (en)
French (fr)
Inventor
雷俊
卞在银
王云峰
曾露添
江德勇
张帆
黄庶锋
刘文华
瞿月红
杜放
Original Assignee
佛山市顺德区美的电热电器制造有限公司
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Application filed by 佛山市顺德区美的电热电器制造有限公司 filed Critical 佛山市顺德区美的电热电器制造有限公司
Priority to EP18773063.5A priority Critical patent/EP3527892A4/en
Priority to JP2018544036A priority patent/JP6854826B2/ja
Priority to KR1020187031434A priority patent/KR102112086B1/ko
Priority to US16/288,116 priority patent/US20190200419A1/en
Publication of WO2019119640A1 publication Critical patent/WO2019119640A1/zh

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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/088—Pressure-cookers; Lids or locking devices specially adapted therefor adapted to high-frequency heating
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention relates to the technical field of household appliances, in particular to a power control method of an electromagnetic cooking appliance and an electromagnetic cooking appliance.
  • a first object of the present invention is to provide a power control method for an electromagnetic cooking appliance that can realize heating of a plurality of coil disks simultaneously and with different powers.
  • a second object of the present invention is to provide a non-transitory computer readable storage medium.
  • a third object of the present invention is to provide an electromagnetic cooking appliance.
  • a first aspect of the present invention provides a power control method for an electromagnetic cooking appliance, the electromagnetic cooking appliance comprising a first coil disk and a second coil disk, the first coil disk and the first The two coil disks each correspond to an independent resonant circuit, and the power control method comprises the steps of: acquiring target power of the electromagnetic cooking appliance; determining a heating cycle of the electromagnetic cooking appliance according to the target power, wherein each The heating cycle includes at least one heating period; in each of the heating periods, the power switch corresponding to the first coil is controlled by a first control pulse, and the second coil is controlled by a second control pulse The power switch corresponding to the disk is controlled such that the first coil disk and the second coil disk are heated simultaneously and at different powers, wherein the first coil disk and the second coil disk are simultaneously heated The power switch corresponding to the first coil disc is at the start-up time of each switching cycle and the power switch corresponding to the second coil disk is Switching cycles starting opening the same time.
  • the target power of the electromagnetic cooking appliance is acquired, and the heating cycle of the electromagnetic cooking appliance is determined according to the target power, wherein each heating cycle includes at least one heating period, at each During the heating period, the power switch corresponding to the first coil is controlled by the first control pulse, and the power switch corresponding to the second coil is controlled by the second control pulse, so that the first coil and the second coil At the same time, heating is performed at different powers, so that a plurality of coil disks can be simultaneously and heated at different powers.
  • the power control method of the electromagnetic cooking appliance according to the above embodiment of the present invention may further have the following additional technical features:
  • each of said heating periods corresponds to a half-wave period of the input AC power source.
  • each of the heating cycles includes a heating period, and the first coil disk and the second coil disk are simultaneously heated.
  • each of the heating cycles includes four heating periods, wherein, in the first heating period and the second heating period, the first coil disk and the second The coil disk is simultaneously heated; in the third heating period and the fourth heating period, the first coil disk is heated, and the second coil disk stops heating.
  • each of the heating cycles includes four heating periods, wherein, in the first heating period and the second heating period, the first coil disk and the second The coil disk is simultaneously heated; in the third heating period, the first coil disk is heated, the second coil disk stops heating; and in the fourth heating period, the first coil disk and the second coil The tray stops heating at the same time.
  • the power switch corresponding to the first coil disk when the first coil disk and the second coil disk are simultaneously heated, the power switch corresponding to the first coil disk has an on time and a second time in each switching cycle.
  • the power switch corresponding to the coil disk has different turn-on time in each switching cycle, and the switching cycle of the power switch corresponding to the first coil disk is the same as the switching cycle of the power switch corresponding to the second coil disk.
  • the heating period is less than or equal to 320 milliseconds.
  • the first coil disk is disposed concentrically or adjacently to the second coil disk.
  • a second aspect of the present invention provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the power control method of the electromagnetic cooking appliance described above.
  • non-transitory computer readable storage medium of the embodiment of the present invention by performing the power control method of the electromagnetic cooking appliance described above, it is possible to realize heating of a plurality of coil disks simultaneously and with different powers.
  • an embodiment of the third aspect of the present invention provides an electromagnetic cooking apparatus comprising a first coil disk, a second coil disk, a memory, a processor, and a memory stored on the processor and on the processor a power control program for an operating electromagnetic cooking appliance, wherein each of the first coil disk and the second coil disk corresponds to an independent resonant circuit, and the power control program of the electromagnetic cooking appliance is implemented by the processor The power control method of the above electromagnetic cooking appliance.
  • the electromagnetic cooking appliance of the embodiment of the present invention it is possible to realize heating of a plurality of coil disks simultaneously and with different powers by the power control method of the above-described electromagnetic cooking appliance.
  • FIG. 1 is a flow chart of a power control method of an electromagnetic cooking appliance according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a drive control circuit of an electromagnetic cooking appliance according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a drive control circuit of an electromagnetic cooking appliance according to another embodiment of the present invention.
  • FIG. 4 is a waveform diagram of a power control method of an electromagnetic cooking appliance according to an embodiment of the present invention.
  • FIG. 5 is a resonance waveform diagram of a power control method of an electromagnetic cooking appliance according to an embodiment of the present invention.
  • FIG. 6 is a resonance waveform diagram of a power control method of an electromagnetic cooking appliance according to another embodiment of the present invention.
  • Fig. 7 is a resonance waveform diagram of a power control method of an electromagnetic cooking appliance according to still another embodiment of the present invention.
  • FIG. 1 is a flow chart of a power control method of an electromagnetic cooking appliance in accordance with an embodiment of the present invention.
  • the electromagnetic cooking appliance may include a first coil disk 70 and a second coil disk 80, each of which corresponds to an independent one. Resonant circuit.
  • the first coil disk 70 and the second coil disk 80 may be disposed concentrically, or as shown in FIG. 3, the first coil disk 70 and the second coil disk 80 may be disposed adjacent to each other.
  • the driving control circuit of the electromagnetic cooking appliance may include: an alternating current power source 10, a rectifier module 20, a control module 30, a first power switch 40, a second power switch 50, and a zero-crossing detection module. 60.
  • the first power switch 40 and the second power switch 50 may be IGBTs.
  • the first coil disk 70 and the second coil disk 80 respectively have independent resonant circuits, that is, the first power switch 40 is used to control the on and off of the first coil disk 70, and the second power switch 50 is used to control the second coil.
  • the disk 80 is turned on and off.
  • the zero-crossing detection module 60 is configured to detect an AC power zero-crossing signal
  • the rectifier module 20 is configured to rectify the input AC power into a DC power
  • the switch module is configured to invert the rectified DC signal into a high-frequency signal above 20KHz, and a high-frequency signal
  • the signal transforms the electrical signal into the transformed electromagnetic signal through the coil disk, and the electromagnetic cooking device (heated body) generates eddy current and hysteresis motion in the alternating electromagnetic signal to generate energy.
  • the power control method of the electromagnetic cooking appliance of the embodiment of the present invention may include the following steps:
  • each heating cycle includes at least one heating period.
  • each heating period corresponds to one half-wave period of the input AC power source.
  • the heating cycle is less than or equal to 320 milliseconds. It should be noted that 320 milliseconds is 32 AC power half cycles, the minimum heating cycle is to heat an AC power supply half cycle 10 milliseconds, stop 310 milliseconds, the minimum average power is the reference power P*1/32, and the minimum reference control power is 3200W, the minimum power is 100W, the smaller the heating cycle, the more uniform the heating, combined with the minimum control power and heating uniformity, so the heating cycle is limited to 320 milliseconds.
  • the target power of the electromagnetic cooking appliance is acquired, and then the heating cycle of the electromagnetic cooking appliance is determined according to the target power, and each heating period includes at least one heating period, and in each heating period,
  • the power switches corresponding to the first coil and the second coil are respectively controlled by different control pulses, and the two power switches are controlled to be the same at the start time of each switching cycle, thereby reaching the first coil and the second coil
  • the coil disk is heated at the same time and at different powers until the current heating power of the cooking appliance reaches the set target power, and the heating is stopped.
  • the maximum power heating coil disk is used as a reference (assumed to be the first coil disk), and the power switch can be turned on the same to realize the first coil disk and the first coil disk.
  • the two coils are heated at the same time, and can be the same or different when turned off (that is, the control pulse width is the same or different, when the control pulse width is the same, the same power heating is realized, when the control pulse width is different, different power heating is realized), for example, Controlling, by a first control pulse, a power switch corresponding to the first coil, and controlling a power switch corresponding to the second coil by a second control pulse, wherein a pulse width of the first control pulse is greater than a width of the second control pulse So that the first coil disk and the second coil disk are heated at different powers.
  • the current heating power of the electromagnetic cooking appliance is the sum of the power of the first coil disk and the power of the second coil disk for each heating period.
  • the power switch corresponding to the first coil disk when the first coil disk and the second coil disk are simultaneously heated, has a power switch corresponding to the second coil disk at each turn-on time of each switching cycle.
  • the turn-on time of each switching cycle is different, and the switching cycle of the power switch corresponding to the first coil is the same as the switching cycle of the power switch corresponding to the second coil.
  • the heating period included in the heating cycle is described below.
  • each of the heating cycles includes a heating period, and the first coil disk and the second coil disk are simultaneously heated.
  • the first power switch is controlled by the first control pulse
  • the second power switch is controlled by the second control pulse
  • the first control pulse and the second The widths of the control pulses are different, and the on-start times of the first power switch and the second power switch are the same, thereby realizing that the first coil disk and the second coil disk are simultaneously heated at different powers until the current power of the electromagnetic cooking appliance The set target power is reached.
  • each heating cycle is a half cycle of the alternating current power source, the output power is the same every cycle, there is no power fluctuation, and the interference to the power grid is small.
  • each heating cycle includes four heating periods, wherein the first coil disk and the second coil disk are simultaneously heated during the first heating period and the second heating period, During the third heating period and the fourth heating period, the first coil disk is heated and the second coil disk is stopped.
  • the first power switch is controlled by the first control pulse, and the second power switch is performed by the second control pulse. Controlling, and the widths of the first control pulse and the second control pulse are different, the first power switch and the second power switch are turned on at the same instant, thereby realizing the first coil and the second coil simultaneously and at different powers heating.
  • the first power switch is still controlled by the first control pulse, and the second power switch is controlled to be in an off state to heat the first coil, the second coil
  • the tray stops heating, during which time the current power of the electromagnetic cooking appliance can be adjusted.
  • each heating cycle includes four heating periods, wherein, in the first heating period and the second heating period, the first coil disk and the second coil disk are simultaneously heated, In the third heating period, the first coil disk is heated, the second coil disk stops heating, and in the fourth heating period, the first coil disk and the second coil disk simultaneously stop heating.
  • the first power switch is controlled by the first control pulse, and the second power switch is performed by the second control pulse. Controlling, and the widths of the first control pulse and the second control pulse are different, the first power switch and the second power switch are turned on at the same instant, thereby realizing the first coil and the second coil simultaneously and at different powers heating.
  • the first power switch is still controlled by the first control pulse, and the second power switch is controlled to be in an off state to heat the first coil disk and the second coil disk to stop heating.
  • both the first power switch and the second power switch are controlled to be in an off state such that the first coil disk and the second coil disk simultaneously stop heating, during which the current power of the electromagnetic cooking appliance can be Make adjustments.
  • both coils adopt an intermittent heating control method to achieve the purpose of simultaneous heating and enhance the uniform heating effect.
  • the resonance circuit corresponding to the first coil disk since the alternating magnetic field is generated around the first coil disk when the first coil disk is controlled to be heated, the resonance circuit corresponding to the first coil disk generates a resonance voltage. At the same time, even if the second coil disk is not heated, its corresponding resonant circuit generates a resonant voltage (less than the voltage generated by the resonant circuit corresponding to the first coil disk). Similarly, when the second coil disk is controlled to be heated, even if the first coil disk is not heated, the resonance circuit corresponding to the first coil disk generates a resonance voltage.
  • the target power of the electromagnetic cooking appliance is obtained, and the heating cycle of the electromagnetic cooking appliance is determined according to the target power, wherein each heating cycle includes at least one heating time. a segment, in each heating period, controlling a power switch corresponding to the first coil disk with a first control pulse, and controlling a power switch corresponding to the second coil disk with a second control pulse to make the first coil disk Simultaneously with the second coil disk and with different powers, it is possible to achieve heating of the plurality of coil disks simultaneously and with different powers.
  • embodiments of the present invention also provide a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by the processor, implements the power control method of the electromagnetic cooking appliance described above.
  • non-transitory computer readable storage medium of the embodiment of the present invention by performing the power control method of the electromagnetic cooking appliance described above, it is possible to realize heating of a plurality of coil disks simultaneously and with different powers.
  • embodiments of the present invention also provide an electromagnetic cooking appliance comprising a first coil disk, a second coil disk, a memory, a processor, and power control of an electromagnetic cooking appliance stored on the memory and operable on the processor
  • the program wherein the first coil disk and the second coil disk each correspond to an independent resonant circuit, and the power control program of the electromagnetic cooking appliance is implemented by the processor to implement the power control method of the electromagnetic cooking appliance described above.
  • the electromagnetic cooking appliance of the embodiment of the present invention it is possible to realize heating of a plurality of coil disks simultaneously and with different powers by the power control method of the above-described electromagnetic cooking appliance.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • terms such as “installation”, “connected”, “connected”, and “fixed” are to be understood broadly, and may be, for example, a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be understood broadly, and may be, for example, a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Induction Heating Cooking Devices (AREA)

Abstract

一种电磁烹饪器具的功率控制方法，包括以下步骤：步骤S1，获取电磁烹饪器具的目标功率；步骤S2，根据目标功率确定电磁烹饪器具的加热周期，其中，每个加热周期包括至少一个加热时间段；步骤S3，在每个加热时间段，以第一控制脉冲对第一线圈盘（70）对应的功率开关（40）进行控制，并以第二控制脉冲对第二线圈盘（80）对应的功率开关（50）进行控制，以使第一线圈盘（70）和第二线圈盘（80）同时且以不同功率进行加热，其中，在第一线圈盘（70）与第二线圈盘（80）同时进行加热时，第一线圈盘（70）对应的功率开关（40）在每个开关周期的开通起始时刻与第二线圈盘（80）对应的功率开关（50）在每个开关周期的开通起始时刻相同。还涉及使用上述功率控制方法的一种电磁烹饪器具，能够实现多个线圈盘同时且以不同功率进行加热。

Description

电磁烹饪器具及其功率控制方法 技术领域
本发明涉及家用电器技术领域，特别涉及一种电磁烹饪器具的功率控制方法和一种电磁烹饪器具。
背景技术
当多个线圈盘同时加热一个锅具时，由于线圈盘之间产生的磁场相互耦合干扰，因此不能实现同时以不同功率加热。
发明内容
本发明旨在至少在一定程度上解决上述技术中的技术问题之一。为此，本发明的第一个目的在于提出一种电磁烹饪器具的功率控制方法，能够实现多个线圈盘同时且以不同功率进行加热。
本发明的第二个目的在于提出一种非临时性计算机可读存储介质。
本发明的第三个目的在于提出一种电磁烹饪器具。
为达到上述目的，本发明第一方面实施例提出了一种电磁烹饪器具的功率控制方法，所述电磁烹饪器具包括第一线圈盘和第二线圈盘，所述第一线圈盘和所述第二线圈盘各自对应一个独立的谐振回路，所述功率控制方法包括以下步骤：获取所述电磁烹饪器具的目标功率；根据所述目标功率确定所述电磁烹饪器具的加热周期，其中，每个所述加热周期包括至少一个加热时间段；在每个所述加热时间段，以第一控制脉冲对所述第一线圈盘对应的功率开关进行控制，并以第二控制脉冲对所述第二线圈盘对应的功率开关进行控制，以使所述第一线圈盘和所述第二线圈盘同时且以不同功率进行加热，其中，在所述第一线圈盘与所述第二线圈盘同时进行加热时，所述第一线圈盘对应的功率开关在每个开关周期的开通起始时刻与所述第二线圈盘对应的功率开关在每个开关周期的开通起始时刻相同。
根据本发明实施例的电磁烹饪器具的功率控制方法，获取电磁烹饪器具的目标功率，并根据目标功率确定电磁烹饪器具的加热周期，其中，每个加热周期包括至少一个加热时间段，在每个加热时间段，以第一控制脉冲对第一线圈盘对应的功率开关进行控制，并以第二控制脉冲对第二线圈盘对应的功率开关进行控制，以使第一线圈盘和第二线圈盘同时且以不同功率进行加热，从而能够实现多个线圈盘同时且以不同功率进行加热。
另外，根据本发明上述实施例提出的电磁烹饪器具的功率控制方法还可以具有如下附加的技术特征：
根据本发明的一个实施例，每个所述加热时间段对应输入交流电源的一个半波周期。
根据本发明的一个实施例，每个所述加热周期包括一个加热时间段时，所述第一线圈盘和所述第二线圈盘同时持续加热。
根据本发明的一个实施例，每个所述加热周期包括四个加热时间段时，其中，在第一个加热时间段和第二个加热时间段，所述第一线圈盘和所述第二线圈盘同时加热；在第三个加热时间段和第四个加热时间段，所述第一线圈盘加热，所述第二线圈盘停止加热。
根据本发明的一个实施例，每个所述加热周期包括四个加热时间段时，其中，在第一个加热时间段和第二个加热时间段，所述第一线圈盘和所述第二线圈盘同时加热；在第三个加热时间段，所述第一线圈盘加热，所述第二线圈盘停止加热；在第四个加热时间段，所述第一线圈盘和所述第二线圈盘同时停止加热。
根据本发明的一个实施例，在所述第一线圈盘与所述第二线圈盘同时进行加热时，所述第一线圈盘对应的功率开关在每个开关周期的开通时间与所述第二线圈盘对应的功率开关在每个开关周期的开通时间不同，所述第一线圈盘对应的功率开关的开关周期与所述第二线圈盘对应的功率开关的开关周期相同。
根据本发明的一个实施例，所述加热周期小于等于320毫秒。
根据本发明的一个实施例，所述第一线圈盘与所述第二线圈盘同心设置或者相邻设置。
为达到上述目的，本发明第二方面实施例提出了一种非临时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述的电磁烹饪器具的功率控制方法。
本发明实施例的非临时性计算机可读存储介质，通过执行上述的电磁烹饪器具的功率控制方法，能够实现多个线圈盘同时且以不同功率进行加热。
为达到上述目的，本发明第三方面实施例提出了一种电磁烹饪器具，包括第一线圈盘、第二线圈盘、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的电磁烹饪器具的功率控制程序，其中，所述第一线圈盘和所述第二线圈盘各自对应一个独立的谐振回路，所述电磁烹饪器具的功率控制程序被所述处理器执行时实现上述的电磁烹饪器具的功率控制方法。
本发明实施例的电磁烹饪器具，通过上述的电磁烹饪器具的功率控制方法，能够实现多个线圈盘同时且以不同功率进行加热。
附图说明
图1是根据本发明实施例的电磁烹饪器具的功率控制方法的流程图；
图2是根据本发明一个实施例的电磁烹饪器具的驱动控制电路的结构示意图；
图3是根据本发明另一个实施例的电磁烹饪器具的驱动控制电路的结构示意图；
图4是根据本发明一个实施例的电磁烹饪器具的功率控制方法的波形图；
图5是根据本发明一个实施例的电磁烹饪器具的功率控制方法的谐振波形图；
图6是根据本发明另一个实施例的电磁烹饪器具的功率控制方法的谐振波形图；
图7是根据本发明又一个实施例的电磁烹饪器具的功率控制方法的谐振波形图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面结合附图来描述根据本发明实施例提出的电磁烹饪器具的功率控制方法和电磁烹饪器具。
图1是根据本发明实施例的电磁烹饪器具的功率控制方法的流程图。
在本发明的实施例中，如图2和图3所示，电磁烹饪器具可包括第一线圈盘70和第二线圈盘80，第一线圈盘70和第二线圈盘80各自对应一个独立的谐振回路。其中，如图2所示，第一线圈盘70与第二线圈盘80可以同心设置，或者如图3所示，第一线圈盘70与第二线圈盘80可以相邻设置。
具体地，如图2和图3所示，电磁烹饪器具的驱动控制电路可包括：交流电源10、整流模块20、控制模块30，第一功率开关40、第二功率开关50和过零检测模块60。其中，第一功率开关40和第二功率开关50可以为IGBT。第一线圈盘70和第二线圈盘80分别具有独立的谐振回路，即第一功率开关40用于控制第一线圈盘70的导通和关断，第二功率开关50用于控制第二线圈盘80的导通和关断。过零检测模块60用于检测交流电源过零信号，整流模块20用于将输入的交流电源整流成直流电，开关模块用于将整流后的直流信号逆变成20KHz以上的高频信号，高频信号通过线圈盘将电信号转变成交变的电磁信号，电磁烹饪器具(被加热体)在交变的电磁信号中产生涡流及磁滞运动，产生能量。
如图4所示，当其中一个功率开关控制对应的线圈盘工作时，在线圈盘周围和被加热体的周边会产生交变的磁场，没有被功率开关控制的线圈盘在交变磁场中会产生跟随式频率相同谐振，并且两个谐振的到达波谷时间非常接近。
如图1所示，本发明实施例的电磁烹饪器具的功率控制方法可包括以下步骤：
S1，获取电磁烹饪器具的目标功率。
S2，根据目标功率确定电磁烹饪器具的加热周期，其中，每个加热周期包括至少一个加热时间段。在本发明的实施例中，每个加热时间段对应输入交流电源的一个半波周期。加热周期小于等于320毫秒。需要说明的是，320毫秒是32个交流电源半周期，最小加热 周期为加热一个交流电源半周期10毫秒，停止310毫秒，最小平均功率为基准功率P*1/32，按最小基准控制功率为3200W，最小功率为100W，加热周期越小，加热越均匀，结合最小控制功率和加热均匀性，所以将加热周期限制在320毫秒以内。
S3，在每个加热时间段，以第一控制脉冲对第一线圈盘对应的功率开关进行控制，并以第二控制脉冲对第二线圈盘对应的功率开关进行控制，以使第一线圈盘和第二线圈盘同时且以不同功率进行加热，其中，在第一线圈盘与第二线圈盘同时进行加热时，第一线圈盘对应的功率开关在每个开关周期的开通起始时刻与第二线圈盘对应的功率开关在每个开关周期的开通起始时刻相同。
具体地，在电磁烹饪器具上电工作后，获取电磁烹饪器具的目标功率，然后根据目标功率确定电磁烹饪器具的加热周期，每个加热周期包括至少一个加热时间段，在每个加热时间段，以不同的控制脉冲分别对第一线圈盘和第二线圈盘对应的功率开关进行控制，并控制两个功率开关在每个开关周期的开通起始时刻相同，从而达到第一线圈盘和第二线圈盘同时且以不同功率进行加热的目的，直至烹饪电器的当前加热功率达到设定的目标功率时，停止加热。例如，在第一线圈盘和第二线圈盘同时加热时，以最大功率加热线圈盘为基准(假设为第一线圈盘)，功率开关的导通时可相同，以实现第一线圈盘和第二线圈盘同时加热，关断时可相同或不同(也就是控制脉冲宽度相同或不同，当控制脉冲宽度相同时，实现同功率加热，当控制脉冲宽度不同时，实现不同功率加热)，如，以第一控制脉冲对第一线圈盘对应的功率开关进行控制，并以第二控制脉冲对第二线圈盘对应的功率开关进行控制，第一控制脉冲的脉冲宽度可以大于第二控制脉冲的宽度，以使第一线圈盘和第二线圈盘以不同功率进行加热。
其中，电磁烹饪器具的当前加热功率为每个加热时间段对第一线圈盘加热的功率和对第二线圈盘加热的功率的总和。
根据本发明的一个实施例，在第一线圈盘与第二线圈盘同时进行加热时，第一线圈盘对应的功率开关在每个开关周期的开通时间与第二线圈盘对应的功率开关在每个开关周期的开通时间不同，第一线圈盘对应的功率开关的开关周期与第二线圈盘对应的功率开关的开关周期相同。
也就是说，在每个开关周期内，如果第一线圈盘的导通时间为T1，关断时间为T2，第二线圈盘的导通时间为t1，关断时间为t2，则T1≥t1，T2≤t2，且T1+T2＝t1+t2。由此可以保证第一线圈盘和第二线圈盘同时加热。
下面对加热周期包括的加热时间段进行介绍。
根据本发明的一个实施例，每个加热周期包括一个加热时间段时，第一线圈盘和第二线圈盘同时持续加热。
也就是说，如图5所示，在加热时间段，以第一控制脉冲对第一功率开关进行控制，并以第二控制脉冲对第二功率开关进行控制，并且第一控制脉冲和第二控制脉冲的宽度不同，第一功率开关和第二功率开关的导通起始时刻相同，从而实现了第一线圈盘和第二线圈盘同时且以不同功率持续加热，直至电磁烹饪器具的当前功率达到设定的目标功率。由此，通过控制第一线圈盘和第二线圈盘同时加热，每个加热周期为交流电源半周期，输出功率每个周期相同，没有功率波动，对电网干扰小。
根据本发明的另一个实施例，每个加热周期包括四个加热时间段时，其中，在第一个加热时间段和第二个加热时间段，第一线圈盘和第二线圈盘同时加热，在第三个加热时间段和第四个加热时间段，第一线圈盘加热，第二线圈盘停止加热。
也就是说，如图6所示，在第一个加热时间段和第二个加热时间段，以第一控制脉冲对第一功率开关进行控制，并以第二控制脉冲对第二功率开关进行控制，并且第一控制脉冲和第二控制脉冲的宽度不同，第一功率开关和第二功率开关的导通起始时刻相同，从而实现了第一线圈盘和第二线圈盘同时且以不同功率加热。在第三个加热时间段和第四个加热时间段，仍以第一控制脉冲对第一功率开关进行控制，并控制第二功率开关处于截止状态，以使第一线圈盘加热，第二线圈盘停止加热，在此期间，可对电磁烹饪器具的当前功率进行调节。由此，通过控制第一线盘的输出功率小于系统允许的最小连续输出功率，其中第二线圈盘采用间歇加热控制方法，达到同时加热的目的，提升均匀加热效果。
根据本发明的又一个实施例，每个加热周期包括四个加热时间段时，其中，在第一个加热时间段和第二个加热时间段，第一线圈盘和第二线圈盘同时加热，在第三个加热时间段，第一线圈盘加热，第二线圈盘停止加热，在第四个加热时间段，第一线圈盘和第二线圈盘同时停止加热。
也就是说，如图7所示，在第一个加热时间段和第二个加热时间段，以第一控制脉冲对第一功率开关进行控制，并以第二控制脉冲对第二功率开关进行控制，并且第一控制脉冲和第二控制脉冲的宽度不同，第一功率开关和第二功率开关的导通起始时刻相同，从而实现了第一线圈盘和第二线圈盘同时且以不同功率加热。在第三个加热时间段，仍以第一控制脉冲控制第一功率开关进行控制，并控制第二功率开关处于截止状态，以使第一线圈盘加热，第二线圈盘停止加热。在第四个加热时间段，控制第一功率开关和第二功率开关均处于截止状态，以使第一线圈盘和第二线圈盘同时停止加热，在此期间，可对电磁烹饪器具的当前功率进行调节。由此，通过控制两个线盘的输出功率都小于系统允许的最小连续输出功率，两个线盘均采用间歇加热控制方法，达到同时加热的目的，提升均匀加热效果。
由上可知，如图5-图7所示，由于在控制第一线圈盘进行加热时，第一线圈盘周围会 产生交变的磁场，所以在第一线圈盘对应的谐振回路产生谐振电压的同时，即使第二线圈盘未进行加热，其对应的谐振回路也会产生谐振电压(小于第一线圈盘对应的谐振回路产生的电压)。同样地，在控制第二线圈盘进行加热时，即使第一线圈盘未进行加热，第一线圈盘对应的谐振回路也会产生谐振电压。
综上所述，根据本发明实施例的电磁烹饪器具的功率控制方法，获取电磁烹饪器具的目标功率，并根据目标功率确定电磁烹饪器具的加热周期，其中，每个加热周期包括至少一个加热时间段，在每个加热时间段，以第一控制脉冲对第一线圈盘对应的功率开关进行控制，并以第二控制脉冲对第二线圈盘对应的功率开关进行控制，以使第一线圈盘和第二线圈盘同时且以不同功率进行加热，从而能够实现多个线圈盘同时且以不同功率进行加热。
另外，本发明的实施例还提出了一种非临时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述的电磁烹饪器具的功率控制方法。
本发明实施例的非临时性计算机可读存储介质，通过执行上述的电磁烹饪器具的功率控制方法，能够实现多个线圈盘同时且以不同功率进行加热。
此外，本发明的实施例还提出了一种电磁烹饪器具，包括第一线圈盘、第二线圈盘、存储器、处理器及存储在存储器上并可在处理器上运行的电磁烹饪器具的功率控制程序，其中，第一线圈盘和第二线圈盘各自对应一个独立的谐振回路，电磁烹饪器具的功率控制程序被理器执行时实现上述的电磁烹饪器具的功率控制方法。
需要说明的是，本发明实施例的烹饪器具中未披露的细节，请参照本发明实施例的电磁烹饪器具的功率控制方法中所披露的细节，具体这里不再赘述。
本发明实施例的电磁烹饪器具，通过上述的电磁烹饪器具的功率控制方法，能够实现多个线圈盘同时且以不同功率进行加热。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定” 等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种电磁烹饪器具的功率控制方法，其特征在于，所述电磁烹饪器具包括第一线圈盘和第二线圈盘，所述第一线圈盘和所述第二线圈盘各自对应一个独立的谐振回路，所述功率控制方法包括以下步骤：
    获取所述电磁烹饪器具的目标功率；
    根据所述目标功率确定所述电磁烹饪器具的加热周期，其中，每个所述加热周期包括至少一个加热时间段；
    在每个所述加热时间段，以第一控制脉冲对所述第一线圈盘对应的功率开关进行控制，并以第二控制脉冲对所述第二线圈盘对应的功率开关进行控制，以使所述第一线圈盘和所述第二线圈盘同时且以不同功率进行加热，其中，在所述第一线圈盘与所述第二线圈盘同时进行加热时，所述第一线圈盘对应的功率开关在每个开关周期的开通起始时刻与所述第二线圈盘对应的功率开关在每个开关周期的开通起始时刻相同。
  2. 如权利要求1所述的电磁烹饪器具的功率控制方法，其特征在于，每个所述加热时间段对应输入交流电源的一个半波周期。
  3. 如权利要求1或2所述的电磁烹饪器具的功率控制方法，其特征在于，每个所述加热周期包括一个加热时间段时，所述第一线圈盘和所述第二线圈盘同时持续加热。
  4. 如权利要求1或2所述的电磁烹饪器具的功率控制方法，其特征在于，每个所述加热周期包括四个加热时间段时，其中，
    在第一个加热时间段和第二个加热时间段，所述第一线圈盘和所述第二线圈盘同时加热；
    在第三个加热时间段和第四个加热时间段，所述第一线圈盘加热，所述第二线圈盘停止加热。
  5. 如权利要求1或2所述的电磁烹饪器具的功率控制方法，其特征在于，每个所述加热周期包括四个加热时间段时，其中，
    在第一个加热时间段和第二个加热时间段，所述第一线圈盘和所述第二线圈盘同时加热；
    在第三个加热时间段，所述第一线圈盘加热，所述第二线圈盘停止加热；
    在第四个加热时间段，所述第一线圈盘和所述第二线圈盘同时停止加热。
  6. 如权利要求1-5中任一项所述的电磁烹饪器具的功率控制方法，其特征在于，在所述第一线圈盘与所述第二线圈盘同时进行加热时，所述第一线圈盘对应的功率开关在每个开关周期的开通时间与所述第二线圈盘对应的功率开关在每个开关周期的开通时间不同， 所述第一线圈盘对应的功率开关的开关周期与所述第二线圈盘对应的功率开关的开关周期相同。
  7. 如权利要求1所述的电磁烹饪器具的功率控制方法，其特征在于，所述加热周期小于等于320毫秒。
  8. 如权利要求1所述的电磁烹饪器具的功率控制方法，其特征在于，所述第一线圈盘与所述第二线圈盘同心设置或者相邻设置。
  9. 一种非临时性计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求1-8中任一项所述的电磁烹饪器具的功率控制方法。
  10. 一种电磁烹饪器具，其特征在于，包括第一线圈盘、第二线圈盘、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的电磁烹饪器具的功率控制程序，其中，所述第一线圈盘和所述第二线圈盘各自对应一个独立的谐振回路，所述电磁烹饪器具的功率控制程序被所述处理器执行时实现如权利要求1-8中任一项所述的电磁烹饪器具的功率控制方法。
PCT/CN2018/077600 2017-12-21 2018-02-28 电磁烹饪器具及其功率控制方法 WO2019119640A1 (zh)

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