Control method of heating device, heating device and cooking utensil

Abstract

The invention discloses a control method of a heating device, the heating device and a cooking utensil, and the control method of the heating device comprises the following steps: when the heating device is in a mixed heating mode, controlling an infrared heating assembly and an electromagnetic heating assembly to alternately work for at least one time. According to the alternate heating mode, the electromagnetic heating assembly and the infrared heating assembly do not synchronize the superposed working power with the same time length, and when the infrared heating assembly is in a single mode, the heating power reaches the whole machine rated power of the heating device, so that the problem that the rated power and the rated current are exceeded cannot occur; the two heating assemblies alternately work, the mixed heating effect can be macroscopically achieved, and the problems that an infrared furnace plate is arranged to be in a single-section heating mode, and mixed heating cannot be achieved under the limitation of the rated power of the whole machine are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking, and in particular to a control method of a heating device, a heating device and a cooking utensil. Background Art

[0002] In the cooking appliance with mixed heating function, in the same heating zone, there are correspondingly arranged infrared stove plates and electromagnetic wire coils that overlap each other. During operation, in order to allow users to obtain the maximum heating power and heating speed when using a single mode for heating, both infrared heating and electromagnetic heating single modes need to be designed to reach the rated heating power of the whole machine as much as possible. However, in order to simplify the design as much as possible and reduce the difficulty of the assembly process, the infrared stove plate is generally set to a single-stage heating mode, but since the power of the single mode has basically reached the rated power of the whole machine; therefore, as long as the infrared stove plate is powered on, the current passing through the infrared stove plate reaches the rated current and the rated heating power, and there is no current and power margin to start electromagnetic heating, otherwise it will easily exceed the rated power limit, resulting in circuit damage, overcurrent heating of the plug, sparking and other problems; therefore, under the limit of the rated power of the whole machine, only one heating mode can be allowed to work at the same time.

[0003] Because the temperature inertia is small during electromagnetic heating, the sudden cooling and heating phenomenon is more obvious. In addition, in some special cooking scenarios, it is necessary to achieve a certain heating power for both infrared and electromagnetic heating at the same time, and also to adjust the gear. However, it is difficult to achieve linear gear adjustment for electromagnetic heating, and it is easy to have a phenomenon of too much power when adding a gear and insufficient power when dropping a gear. Therefore, in some special cooking scenarios, such as achieving a power distribution of 1:1, 1:2, 1:3, or 1:4... for infrared heating power and electromagnetic heating power, the above-mentioned cooking utensils with mixed heating function will not be able to achieve the required heating power and the feeling of mixed heating cooking. Summary of the invention

[0004] The main purpose of the present invention is to provide a control method for a heating device, aiming to solve the problem that the infrared stove plate is set to a single-stage heating form and mixed heating cannot be achieved under the limitation of the rated power of the whole machine.

[0005] To achieve the above object, the present invention provides a control method for a heating device, wherein the control method for a heating device comprises:

[0006] The heating device comprises a housing, an infrared heating component for performing infrared heating on a device placed on the housing, an electromagnetic heating component for performing electromagnetic heating on the device placed on the housing, and a control device, wherein the control device is electrically connected to the infrared heating component and the electromagnetic heating component;

[0007] The control method of the heating device comprises the following steps:

[0008] When the heating device is in the mixed heating mode, the infrared heating component and the electromagnetic heating component are controlled to work alternately at least once.

[0009] Optionally, when the heating device is in the mixed heating mode, in the step of controlling the infrared heating component and the electromagnetic heating component to work alternately at least once, the working time of the currently working heating component is controlled to be T1, T1≤120S.

[0010] Optionally, when the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises:

[0011] When the heating device is in the mixed heating mode, during the process of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation, there is a first time difference between the closing time of the currently operating heating component and the opening time of another heating component.

[0012] Optionally, the first time difference is T2, T2≤0.02S.

[0013] Optionally, when the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises:

[0014] When the heating device is in the mixed heating mode, the infrared heating component and the electromagnetic heating component are controlled to work alternately at least once, and there is an overlapping time between the closing time of the currently working heating component and the opening time of another heating component.

[0015] Optionally, the overlapping time is T3, T3≤0.005S.

[0016] Optionally, in the step where there is an overlap between the closing time of the currently operating heating component and the opening time of another heating component, during the overlap time, the operating voltages of the infrared heating component and the electromagnetic heating component are Un, Un≤0.8U max , where the peak voltage of the AC power supply is U max .

[0017] Optionally, when the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises:

[0018] When the heating device is in the mixed heating mode, the infrared heating component and the electromagnetic heating component are controlled to perform at least one alternating operation, and when the currently operating heating component is turned off, the other heating component is turned on.

[0019] Optionally, when the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises:

[0020] When the heating device is in the mixed heating mode, during the process of controlling the infrared heating component and the electromagnetic heating component to work alternately at least once, the second time difference between the closing time of the currently working heating component and the opening time of the other heating component and the voltage zero crossing time is within a set range.

[0021] Optionally, the setting range T4≤0.2T0, wherein the period of the AC power supply is T0.

[0022] Optionally, when the heating device is in the mixed heating mode, in the step of controlling the infrared heating component and the electromagnetic heating component to work alternately at least once, the infrared heating component and the electromagnetic heating component are controlled to work alternately multiple times.

[0023] The present invention also provides a heating device, the heating device comprising:

[0024] case;

[0025] An infrared heating component, used for performing infrared heating on the device placed on the housing;

[0026] an electromagnetic heating assembly, used for electromagnetically heating a device placed on the housing; and

[0027] A control device is electrically connected to the infrared heating component and the electromagnetic heating component, and is used to control the operation of the infrared heating component and the electromagnetic heating component respectively. The control device includes a memory, a processor, and a control program for the heating device stored in the memory and executable on the processor. The control program for the heating device is configured to implement the steps of the control method for the cooking appliance as described above.

[0028] Optionally, the heating device also includes a detection device, which is used to detect the voltage zero point of the AC power supply. The control device is electrically connected to the detection device and is used to control the operation of the infrared heating component and the electromagnetic heating component according to the detection device.

[0029] The present invention also provides a cooking utensil, the cooking utensil comprising the above-mentioned heating device, the heating device comprising:

[0030] case;

[0031] An infrared heating component, used for performing infrared heating on the device placed on the housing;

[0032] an electromagnetic heating assembly, used for electromagnetically heating a device placed on the housing; and

[0033] A control device is electrically connected to the infrared heating component and the electromagnetic heating component, and is used to control the operation of the infrared heating component and the electromagnetic heating component respectively. The control device includes a memory, a processor, and a control program for the heating device stored in the memory and executable on the processor. The control program for the heating device is configured to implement the steps of the control method for the cooking appliance as described above.

[0034] In the technical solution provided by the present invention, in the mixed heating mode, the control device controls the infrared heating component and the electromagnetic heating component to work alternately at least once, instead of starting the two to work synchronously at the same time. This form of alternating heating can achieve the effect of mixed heating in a macro sense, that is, when the infrared heating component switches to the electromagnetic heating component to work, due to the large temperature inertia of the infrared heating component, when the electromagnetic heating component is switched on and off, the user does not have an obvious feeling of sudden cooling and heating, and when it is necessary to adjust the overall heating power of the heating device, the heating power and working time of the electromagnetic heating component can be adjusted to achieve the final required mixed heating power, and when the infrared heating component is in single mode and the heating power reaches the rated power of the whole machine of the heating device, the electromagnetic heating component is not synchronized with the infrared heating component and has a superimposed working power of the same length, so there will be no problem of exceeding the rated power and rated current, which solves the problem that the infrared stove plate is set to a single-stage heating form and mixed heating cannot be achieved under the limitation of the rated power of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of a control device for a heating device in a hardware operating environment according to an embodiment of the present invention;

[0037] Figure 2 A circuit diagram of a detection device according to an embodiment of the present invention;

[0038] Figure 3 An exploded schematic diagram of an embodiment of a heating device provided by the present invention;

[0039] Figure 4 for Figure 3 A cross-sectional schematic diagram of a heating device in FIG.

[0040] Figure 5 A schematic diagram of an embodiment of a control method for a heating device provided by the present invention;

[0041] Figure 6 for Figure 5 A schematic diagram of a first embodiment of the working process of two heating components;

[0042] Figure 7 for Figure 5 A schematic diagram of a second embodiment of the working process of two heating components;

[0043] Figure 8 for Figure 5 A schematic diagram of a third embodiment of the working process of two heating components;

[0044] Fig. 9 for Figure 5 A schematic diagram of a fourth embodiment of the working process of two heating components;

[0045] Fig.10 for Figure 5 A schematic diagram of a fifth embodiment of the working process of two heating components.

[0046] Description of Figure Numbers:

[0047] Label name Label name 1 case 3 Electromagnetic heating components 2 Infrared heating components 4 Controls

[0048] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] In the cooking appliance with mixed heating function, in the same heating zone, there are correspondingly arranged infrared stove plates and electromagnetic wire coils arranged in an upper and lower overlapping manner. During operation, in order to allow users to obtain the maximum heating power and heating speed when using a single mode for heating, both infrared heating and electromagnetic heating single modes need to be designed to reach the rated heating power of the whole machine as much as possible. However, in order to simplify the design as much as possible and reduce the difficulty of the assembly process, the infrared stove plate is generally set to a single-stage heating mode, but since the power of the single mode has basically reached the rated power of the whole machine; therefore, as long as the infrared stove plate is connected to the power supply, the current passing through the infrared stove plate reaches the rated current and the rated heating power, and there is no current and power margin to start electromagnetic heating, otherwise it will easily exceed the rated power limit, resulting in circuit damage, plug overcurrent heating, sparking and other problems; therefore, under the limit of the rated power of the whole machine, only one heating mode can be allowed to work at the same time. Because in electromagnetic heating, the temperature inertia is small, the phenomenon of sudden cooling and heating is more obvious, and in some special cooking scenarios, it is necessary to achieve infrared and electromagnetic while maintaining a certain heating power, and it is also necessary to achieve gear adjustment. However, it is difficult to achieve linear gear adjustment for electromagnetic heating, and it is easy for the power to be too high when the gear is increased and insufficient when the gear is decreased. Therefore, in some special cooking scenarios, such as achieving a power distribution of 1:1, 1:2, 1:3, or 1:4... for infrared heating power and electromagnetic heating power, the cooking utensils with the above-mentioned mixed heating function will not be able to achieve the required heating power and mixed heating cooking experience.

[0053] In order to solve the above problems, the present invention provides a heating device, a control method of the heating device and a cooking appliance. Figure 1 A schematic diagram of the structure of a control device 4 of a heating device in a hardware operating environment according to an embodiment of the present invention; Figure 2 A circuit diagram of a detection device according to an embodiment of the present invention;

[0054] Figure 3 An exploded schematic diagram of an embodiment of a heating device provided by the present invention; Figure 4 for Figure 3 A cross-sectional schematic diagram of a heating device in FIG. Figure 5 A schematic diagram of an embodiment of a control method for a heating device provided by the present invention; Figure 6 for Figure 5 A schematic diagram of a first embodiment of the working process of two heating components; Figure 7 for Figure 5 A schematic diagram of a second embodiment of the working process of two heating components; Figure 8 for Figure 5 A schematic diagram of a third embodiment of the working process of two heating components; Fig. 9 for Figure 5 A schematic diagram of a fourth embodiment of the working process of two heating components; Fig.10 for Figure 5 Schematic diagram of the fifth embodiment of the working process of two heating components

[0055] See also Figure 3 to Figure 4 The heating device provided by the present invention includes a shell 1, an infrared heating component 2, an electromagnetic heating component 3 and a control device 4. The infrared heating component 2 is used to perform infrared heating on an appliance placed on the shell 1; the electromagnetic heating component 3 is used to perform electromagnetic heating on an appliance placed on the shell 1; the control device 4 is electrically connected to the infrared heating component 2 and the electromagnetic heating component 3, and is used to control the operation of the infrared heating component 2 and the electromagnetic heating component 3 respectively.

[0056] It can be understood that the control device 4 controls the infrared heating component 2 and the electromagnetic heating component 3 to work respectively, so that the heating device has at least three heating modes, namely, infrared heating mode, electromagnetic heating mode, and mixed heating mode. In the infrared heating mode, the control device 4 only controls the infrared heating component 2 to work, and the electromagnetic heating component 3 does not work at this time; in the electromagnetic heating mode, the control device 4 only controls the electromagnetic heating component 3 to work, and the infrared heating component 2 does not work at this time; and in the mixed heating mode, the control device 4 controls the electromagnetic heating component 3 and the infrared heating component 2 to work. It should be noted that the mixed heating mode does not simply refer to controlling the electromagnetic heating component 3 and the infrared heating component 2 to work simultaneously. The mixed heating mode only indicates that in this heating mode, the electromagnetic heating component 3 and the infrared heating component 2 are both involved in the heating work.

[0057] In this embodiment, the infrared heating component 2 and the electromagnetic heating component 3 are arranged in sequence in an upward and downward manner. In order to enable the electromagnetic heating component 3 to fully couple with the device placed on the shell 1, the electromagnetic heating component 3 needs to be as close to the device as possible. Therefore, the thickness of the infrared heating component 2 needs to be set to be thinner, and in order to enable the electromagnetic heating component 3 and the infrared heating component 2 to be electrically connected to the AC power supply and the control device 4, a lead structure is generally provided, and a magnetic strip is generally provided on the side of the lead structure, so that when assembling the heating device, the assembly process is difficult.

[0058] It is understandable that when more heating components need to be connected to electricity, the number of power terminals will increase, and the volume of the lead structure will also increase, further increasing the difficulty of the assembly process. Therefore, in order to reduce the number of lead terminals, the infrared heating component 2 can be set to a single-stage heating mode, and only two power terminals are needed to achieve its conduction current.

[0059] The control device 4 includes a memory, a processor, and a control program of the heating device stored in the memory and executable on the processor. The control program of the heating device is configured to implement the steps of the control method of the cooking appliance.

[0060] Reference Figure 1 , Figure 1 It is a schematic diagram of the structure of the control device 4 of the hardware operating environment involved in the embodiment of the present invention.

[0061] like Figure 1 As shown, the control device 4 may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0062] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the control device 4, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0063] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication device, a user interface device, and a control program for a cooking appliance.

[0064] exist Figure 1 In the control device 4 shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the control device 4 of the present invention can be set in the control device 4, and the control device 4 calls the control program of the cooking appliance stored in the memory 1005 through the processor 1001, and executes the control method of the cooking appliance provided in the embodiment of the present invention.

[0065] The embodiment of the present invention provides a control method for a heating device, referring to Figure 5 , Figure 5 The figure is a flow chart of an embodiment of a method for controlling a cooking appliance according to the present invention.

[0066] The control method of the heating device comprises the following steps:

[0067] Step S10: When the heating device is in the mixed heating mode, the infrared heating component 2 and the electromagnetic heating component 3 are controlled to work alternately at least once.

[0068] It should be noted that, as mentioned above, since the infrared heating component 2 is set to single-stage heating, in order to ensure that the heating power of the infrared heating component 2 in the infrared heating mode can meet the needs of the user, the rated power of the infrared heating component 2 will basically be close to the whole machine power of the heating device. Of course, the electromagnetic heating component 3 also has a situation of separate heating, and the maximum rated power of the electromagnetic heating component 3 is also set to be close to the whole machine power of the heating device. The maximum heating power of the electromagnetic heating component 3 and the infrared heating component 2 in the single mode working mode (electromagnetic heating mode or infrared heating mode) are both set to not less than 60% of the rated heating power of the whole machine of the heating device.

[0069] In the technical solution provided by the present invention, in the mixed heating mode, the control device 4 controls the infrared heating component 2 and the electromagnetic heating component 3 to work alternately at least once, instead of starting the two to work synchronously at the same time. This form of alternating heating can achieve the effect of mixed heating in a macro sense, that is, when the infrared heating component 2 switches to the electromagnetic heating component 3 to work, due to the large temperature inertia of the infrared heating component 2, when the electromagnetic heating component 3 is switched on and off, the user does not have an obvious feeling of sudden cooling and heating, and when it is necessary to adjust the overall heating power of the heating device, the heating power and working time of the electromagnetic heating component 3 can be adjusted separately to achieve the final required mixed heating power, and when the infrared heating component 2 is in a single mode and the heating power reaches the rated power of the whole machine of the heating device, the electromagnetic heating component 3 is not synchronized with the infrared heating component 2 and has a superimposed working power of the same length, so there will be no problem of exceeding the rated power and rated current, which solves the problem that the infrared stove plate is set to a single-stage heating form and mixed heating cannot be achieved under the limitation of the rated power of the whole machine.

[0070] Further, in step S10: the heating device is in the mixed heating mode, and in the step of controlling the infrared heating component 2 and the electromagnetic heating component 3 to work alternately at least once, the working time of the currently working heating component is controlled to be T1, T1≤120S.

[0071] It is understandable that when the infrared heating component 2 and the electromagnetic heating component 3 have a huge difference in their respective current heating powers, the user will be able to clearly feel the fluctuating heating power. In order to allow the user to experience a mixed mode from a macro perspective when using the heating device, it is necessary to avoid a single heating component from working for too long, so as to control the working time of a single heating component to no more than 2 minutes, thereby effectively avoiding the user from clearly feeling the jumping heating feeling between the two heating components.

[0072] Further, step S10: when the heating device is in the mixed heating mode, the step of controlling the infrared heating component 2 and the electromagnetic heating component 3 to perform at least one alternating operation comprises:

[0073] Step S11, when the heating device is in the mixed heating mode, the infrared heating component 2 and the electromagnetic heating component 3 are controlled to perform at least one alternating operation, and there is a first time difference between the closing time of the currently operating heating component and the opening time of another heating component.

[0074] In some specific usage scenarios, when the working heating powers of the infrared heating component 2 and the electromagnetic heating component 3 are both large and close to the rated power of the whole machine, in order to ensure that the two heating components do not work in a superimposed manner, the currently working heating component can be controlled to be turned off and then turned on after a period of time.

[0075] Furthermore, in order to ensure that the two heating components do not work in a superimposed manner and that the user does not feel that the heating device is interrupted, preferably, the first time difference is T2, T2≤0.02S. In this way, the first time difference is controlled within 0 to 0.02S, and there is a delay between the time when the control device 4 controls the heating component and the time when the heating component starts to execute the working instruction, providing a buffer compatible time.

[0076] Further, step S10: when the heating device is in the mixed heating mode, the step of controlling the infrared heating component 2 and the electromagnetic heating component 3 to perform at least one alternating operation comprises:

[0077] Step S12: when the heating device is in the mixed heating mode, the infrared heating component 2 and the electromagnetic heating component 3 are controlled to perform at least one alternating operation, and there is an overlapping time between the closing time of the currently operating heating component and the opening time of another heating component.

[0078] In other specific usage scenarios, when the maximum heating power of the two heating components is set to be much smaller than the rated power of the whole machine, or the total power of the two heating components when working synchronously will not exceed the rated power of the whole machine by too much, in order to ensure that the heating device does not interrupt the heating of the whole machine as much as possible when the two heating components switch work, the rear heating component can be controlled to be turned on before the current heating component is turned off, so that there is a short overlapping working time between the two heating components.

[0079] It should be noted that when the two heating components are switched, the power supply of the two heating components is derived from the AC power supply. The current of the AC power changes alternately in the positive half cycle and the negative half cycle. When the current changes from the positive half cycle to the negative half cycle, the current will gradually decrease until it reaches zero, and then gradually increase. The voltage zero point refers to the moment when the AC voltage waveform changes from the positive half cycle to the negative half cycle or from the negative half cycle to the positive half cycle. The point passing through the x coordinate is the zero point. If the heating mode is turned on or off during this process, the current impact will be reduced to a certain extent.

[0080] Therefore, in this embodiment, the closing time of the current heating component and the opening time of another heating component can be controlled to switch near the voltage zero crossing point, thereby minimizing the impact of the alternating current on the two heating components.

[0081] Furthermore, since the AC power supply has a fixed mains cycle, the mains cycle refers to a complete change cycle of the alternating current (AC), that is, a complete change process from the positive half cycle to the negative half cycle and then to the positive half cycle. The voltage or current of the alternating current changes periodically with the change of time, and this change process is called the cycle of the alternating current. In the mains system, a frequency of 50Hz is usually used, that is, the mains cycle is 0.02 seconds. Preferably, the overlap time is T3, T3≤0.005S.

[0082] Further, in step S12, in a step in which there is an overlapping time between the closing time of the currently working heating component and the opening time of another heating component, during the overlapping time, the working voltages of the infrared heating component 2 and the electromagnetic heating component 3 are Un, Un≤0.8Umax, wherein the peak voltage of the AC power supply is Umax.

[0083] It should be noted that the voltage of AC will change with the cycle of AC. The voltage of AC reaches its maximum value in the positive half cycle, then gradually decreases to zero, and then gradually decreases to the minimum value in the negative half cycle. Then the voltage will gradually increase to zero, and then gradually increase to the maximum value in the positive half cycle, and so on. The voltage of AC changes periodically with the change of time. From the positive half cycle to the negative half cycle and then to the positive half cycle, the voltage will present different values.

[0084] Therefore, the working voltages of the two heating components are not constant, but also change periodically. Therefore, in order to ensure that the total power of the two heating components does not exceed the rated power of the entire heating device during the overlapping time, when the working voltage of the current heating component is less than or equal to 0.8Umax, when the other heating component is turned on, the safety performance of the heating device can be relatively safely guaranteed. When the working voltage of the current heating component is greater than 0.8Umax, ensure that the two heating components do not overlap and work synchronously.

[0085] Further, step S10: when the heating device is in the mixed heating mode, the step of controlling the infrared heating component 2 and the electromagnetic heating component 3 to perform at least one alternating operation comprises:

[0086] Step S13, when the heating device is in the mixed heating mode, the infrared heating component 2 and the electromagnetic heating component 3 are controlled to perform at least one alternating operation, and when the currently operating heating component is turned off, the other heating component is turned on.

[0087] It is understandable that in order to ensure accurate switching between the electromagnetic heating component 3 and the infrared heating component 2, the other heating component can be turned on when the currently working heating component is turned off. Accurate switching between the two can be achieved by setting the rated working time, that is, after one heating component works for the corresponding rated working time, it is turned off for the set time, and at the same time, after the other heating component works for the corresponding set time, it is turned off for the above rated working time, so that the two heating components can be accurately switched.

[0088] Of course, as mentioned above, in order to achieve lower current impact, lower loss of switching elements, less heat generation, and improve the reliability of the entire machine, the switching time between the electromagnetic heating component 3 and the infrared heating component 2 is preferably set at the voltage zero point.

[0089] It should be noted that, since the moment of switching between the electromagnetic heating component 3 and the infrared heating component 2 is preferably set at the voltage zero point, in order to determine the moment of the voltage zero point, the heating device also includes a detection device, the detection device is used to detect the voltage zero point of the AC power supply, and the control device 4 is electrically connected to the detection device, and is used to control the infrared heating component 2 and the electromagnetic heating component 3 to work according to the detection device. Its working process is that when the detection device detects that the instantaneous voltage of the current AC power supply is at the zero point, one of the infrared heating component 2 and the electromagnetic heating component 3 is controlled to stop working, and the other of the infrared heating component 2 and the electromagnetic heating component 3 is synchronously controlled to start working. If the infrared heating component 2 and the electromagnetic heating component 3 work alternately for many times, when the detection device detects the next voltage zero point, or when one of the subsequent voltage zero points is detected, the infrared heating component 2 and the electromagnetic heating component 3 are controlled to switch.

[0090] It should be noted that the detection device can be a comparison circuit, a transistor circuit, an optocoupler isolation circuit, etc. The comparator circuit attenuates the AC signal to the positive input of the comparator through a voltage divider resistor. When the AC input exceeds the zero reference voltage, the zero-crossing detection circuit changes the output state of the comparator. The transistor circuit attenuates the AC signal to the transistor base through a voltage divider resistor, and uses the transistor characteristics to perform zero-crossing detection to change the output state. The optocoupler isolation circuit uses the diode conduction and optocoupler isolation characteristics to perform zero-crossing detection to change the output state. Please refer to Figure 2 , Figure 2 A specific embodiment of the circuit diagram of the detection device is illustrated.

[0091] Further, step S10: when the heating device is in the mixed heating mode, the step of controlling the infrared heating component 2 and the electromagnetic heating component 3 to perform at least one alternating operation comprises:

[0092] Step S14, when the heating device is in the mixed heating mode, in the process of controlling the infrared heating component 2 and the electromagnetic heating component 3 to work alternately at least once, the second time difference between the closing time of the currently working heating component and the opening time of the other heating component and the voltage zero crossing time is within a set range.

[0093] It is understandable that the detection device is detected by electronic circuits, and there will be a time delay from the detection process to the execution process, so that the zero-crossing point obtained by feedback will be located after the zero-crossing point actually detected. In fact, if the rear heating component is turned on according to the zero-crossing point detected by feedback, there will be a lag phenomenon. There will also be a time delay between detecting the voltage zero point and executing the control instruction, and the delayed time can be compensated

[0094] In this embodiment, the closing time of the currently working heating component can be controlled after the detection device detects that the voltage crosses the zero point, and the opening time of the rear heating component can be set when the detection device detects that the voltage crosses the zero point, or it can be set after the detection device detects that the voltage crosses the zero point, that is, the opening and closing times of the two heating components are both after the voltage crosses the zero point, but the opening time of the rear heating component is still before the closing time of the current heating component.

[0095] It is understandable that in other embodiments, the start time of the rear heating component can be set before the voltage crosses zero point. Of course, the voltage crosses zero point can also be determined by detecting the moment when the voltage crosses zero for the first time through the detection device. Since the voltage cycle is a fixed value, the moment when each voltage crosses zero point can be calculated based on the moment when the voltage crosses zero for the first time. Therefore, it is possible to predict when the next voltage zero point will be suitable to arrive when the current heating component is heating, thereby starting the rear heating component in advance.

[0096] Furthermore, in this embodiment, the setting range T4≤0.2T0, wherein the cycle of the AC power supply is T0. It should be noted that in my country, the frequency of the AC power supply is 50HZ, and the cycle of the AC power supply is 0.02 seconds. Therefore, T4≤0.004S. Since the AC power cycle is very short, when a heating mode is turned on or off at the zero point of the AC power supply, the program waiting time is not long, and the user will not feel that there is a waiting problem.

[0097] Further, step S10: when the heating device is in the mixed heating mode, in the step of controlling the infrared heating component 2 and the electromagnetic heating component 3 to work alternately at least once, the infrared heating component 2 and the electromagnetic heating component 3 are controlled to work alternately multiple times.

[0098] It is understandable that in the process of performing multiple alternating operations, in multiple switches, at least one switching feature may exist as in the above-mentioned embodiments, and of course, in multiple switches, there may also be multiple embodiments as in the above-mentioned embodiments. The switching form and switching time of the two heating components are not limited to the above examples. Under the inspiration of the technical essence of the embodiments of this specification, technicians in the relevant field may also make other changes, but as long as the functions and effects achieved are the same or similar to those of the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0099] The following describes different structural designs and different cooking control programs using several specific embodiments.

[0100] In the first embodiment, see Figure 6 When the maximum heating power of the two heating components is set to not less than 60% of the rated power of the whole machine, the infrared heating component 2 first works for a rated time of T, and then turns off the infrared heating component 2 and turns on the electromagnetic heating component 3; after the electromagnetic heating component 3 works for a rated time of T, turns off the electromagnetic heating component 3 and turns on the infrared heating component 2, and the operation is alternated multiple times.

[0101] In the second embodiment, see Figure 7 The rated working time of the two heating components is T. After the infrared heating component 2 works for the rated time T, the infrared heating component 2 is turned off. After an interval of T2, the electromagnetic heating component 3 is turned on. After the electromagnetic heating component 3 works for the rated time T, the electromagnetic heating component 3 is turned off. After an interval of T2, the infrared heating component 2 is turned on, and the operation is alternated multiple times.

[0102] In the third embodiment, see Figure 8 The infrared heating component 2 first works in the positive half cycle of the mains power cycle, and when the mains power is at a voltage zero point, the infrared heating component 2 is turned off, and at the same time, the electromagnetic heating component 3 is turned on. After the electromagnetic heating component 3 works in the negative half cycle of the mains power cycle, when the mains power is at a voltage zero point again, the electromagnetic heating component 3 is turned off, and at the same time, the infrared heating component 2 is turned on, and the operation is alternated multiple times.

[0103] In the fourth embodiment, see Fig. 9The infrared heating component 2 first works in the positive half cycle of the mains power cycle, and when the mains power is at the voltage zero point, the infrared heating component 2 is turned off, and after an interval of time T0, the electromagnetic heating component 3 is turned on, and after the electromagnetic heating component 3 works in the negative half cycle of the mains power cycle, when the time distance from the voltage zero point is T4, the infrared heating component 2 is turned on in advance, and when the mains power is at the voltage zero point again, the electromagnetic heating component 3 is turned off, and the operation is alternately performed multiple times.

[0104] In the fifth embodiment, see Fig.10 The infrared heating component 2 first works for multiple half cycles of the mains power, and then when the mains power is at a voltage zero point, the infrared heating component 2 is turned off, and at the same time, the electromagnetic heating component 3 is turned on. After the electromagnetic heating component 3 works for multiple half cycles of the mains power, when the mains power is at a voltage zero point again, the electromagnetic heating component 3 is turned off, and at the same time, the infrared heating component 2 is turned on, and the operation is alternated multiple times.

[0105] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0106] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0107] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0108] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0109] The present invention also provides a cooking utensil, which includes the above-mentioned heating device. Since the cooking utensil includes the heating device, the specific structure of the heating device refers to the above-mentioned embodiment. Since the heating device of the cooking utensil adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0110] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for controlling a heating device, characterized in that: The heating device comprises a housing, an infrared heating component for performing infrared heating on a device placed on the housing, an electromagnetic heating component for performing electromagnetic heating on the device placed on the housing, and a control device, wherein the control device is electrically connected to the infrared heating component and the electromagnetic heating component; The control method of the heating device comprises the following steps: When the heating device is in the mixed heating mode, the infrared heating component and the electromagnetic heating component are controlled to work alternately at least once.

2. The control method of the heating device according to claim 1, characterized in that: When the heating device is in the mixed heating mode, in the step of controlling the infrared heating component and the electromagnetic heating component to work alternately at least once, the working time of the currently working heating component is controlled to be T1, T1≤120S.

3. The control method of the heating device according to claim 1, characterized in that: When the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises: When the heating device is in the mixed heating mode, during the process of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation, there is a first time difference between the closing time of the currently operating heating component and the opening time of another heating component.

4. The control method of the heating device according to claim 3, characterized in that: The first time difference is T2, T2≤0.02S.

5. The control method of the heating device according to claim 1, characterized in that: When the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises: When the heating device is in the mixed heating mode, the infrared heating component and the electromagnetic heating component are controlled to work alternately at least once, and there is an overlapping time between the closing time of the currently working heating component and the opening time of another heating component.

6. The control method of the heating device according to claim 5, characterized in that: The overlapping time is T3, T3≤0.005S.

7. The control method of the heating device according to claim 5, characterized in that: In the step where there is an overlapping time between the closing time of the currently working heating component and the opening time of another heating component, during the overlapping time, the working voltages of the infrared heating component and the electromagnetic heating component are Un, Un≤0.8Umax, wherein the peak voltage of the AC power supply is Umax.

8. The control method of the heating device according to claim 1, characterized in that: When the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises: When the heating device is in the mixed heating mode, the infrared heating component and the electromagnetic heating component are controlled to perform at least one alternating operation, and when the currently operating heating component is turned off, the other heating component is turned on.

9. The control method of the heating device according to claim 1, characterized in that: When the heating device is in the mixed heating mode, the step of controlling the infrared heating component and the electromagnetic heating component to perform at least one alternating operation comprises: When the heating device is in the mixed heating mode, during the process of controlling the infrared heating component and the electromagnetic heating component to work alternately at least once, the second time difference between the closing time of the currently working heating component and the opening time of the other heating component and the voltage zero crossing time is within a set range.

10. The control method of the heating device according to claim 9, characterized in that: The setting range T4≤0.2T0, wherein the period of the AC power supply is T0.

11. The control method of the heating device according to claim 1, characterized in that: When the heating device is in the mixed heating mode, in the step of controlling the infrared heating component and the electromagnetic heating component to work alternately at least once, the infrared heating component and the electromagnetic heating component are controlled to work alternately multiple times.

12. A heating device, characterized in that: include: case; An infrared heating component, used for performing infrared heating on the device placed on the housing; An electromagnetic heating component, used for electromagnetically heating the device placed on the housing; as well as, A control device is electrically connected to the infrared heating component and the electromagnetic heating component, and is used to control the operation of the infrared heating component and the electromagnetic heating component respectively. The control device includes a memory, a processor, and a control program for the heating device stored in the memory and executable on the processor. The control program for the heating device is configured to implement the steps of the control method for the cooking appliance as described in any one of claims 1 to 11.

13. The heating device according to claim 12, characterized in that The heating device also includes a detection device, which is used to detect the voltage zero point of the AC power supply. The control device is electrically connected to the detection device and is used to control the operation of the infrared heating component and the electromagnetic heating component according to the detection device.

14. A cooking utensil, characterized in that: Comprising the heating device according to any one of claims 12 to 13.

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