CN113923812A - Microwave heating device, control method and storage medium - Google Patents
Microwave heating device, control method and storage medium Download PDFInfo
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- 235000013305 food Nutrition 0.000 description 10
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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
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/664—Aspects related to the power supply of the microwave heating apparatus
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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
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
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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
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/686—Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators
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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
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/687—Circuits for monitoring or control for cooking
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Abstract
The application discloses a microwave heating device, a control method and a storage medium. The microwave heating device comprises a power supply module, a voltage control module and a control module, wherein the power supply module is used for outputting voltage which is direct current voltage; the amplifying module is connected with the power supply module and used for pressurizing voltage, and the amplifying module comprises a switch element; the microwave source is connected with the amplifying module and used for outputting a microwave signal under the driving of the pressurized voltage; and the control module is used for detecting the voltage of the power supply module and the resonance voltage of the amplification module and controlling the on-off state of the switch element according to the voltage and the resonance voltage. Above-mentioned microwave heating device can obtain power module's voltage and resonance voltage to according to voltage and resonance voltage control switch element's on-off state, thereby guarantee that resonance voltage's peak value is high enough, so that resonance voltage can descend to the zero-bit, in addition, can also control resonance voltage, avoid resonance voltage too big, so that exceed the withstand voltage's of switch element the condition.
Description
Technical Field
The application relates to the technical field of household appliances, in particular to a microwave heating device, a control method and a storage medium.
Background
The conventional microwave heating apparatus generally includes a switching element, a step-up transformer including a primary coil and a secondary coil, a resonant capacitor, and a magnetron. When the resonant amplitude voltage of the resonant capacitor and the primary coil of the step-up transformer drops to the emitter potential (hereinafter referred to as GND) of the switching element, the switching element is turned on, and an operating waveform that reduces the switching loss is formed. However, if the peak value of the resonance voltage with respect to the power supply voltage is not sufficiently high, the amplitude of the resonance voltage is caused to fall below the GND potential, resulting in an increase in the loss of the switching element.
Disclosure of Invention
The embodiment of the application provides a microwave heating device, a control method and a storage medium.
The microwave heating device of the embodiment of the present application includes:
the power supply module is used for outputting voltage, and the voltage is direct-current voltage;
the amplifying module is connected with the power supply module and used for pressurizing the voltage, and the amplifying module comprises a switching element;
the microwave source is connected with the amplifying module and is used for outputting a microwave signal under the driving of the pressurized voltage;
and the control module is used for detecting the voltage of the power supply module and the resonance voltage of the amplification module and controlling the on-off state of the switch element according to the voltage and the resonance voltage.
In some embodiments, the control module is configured to control the on-off state of the switching element according to a proportional relationship between the resonance voltage and the voltage.
In some embodiments, the control module increases the on-width of the switching element when the proportional relationship is less than a first threshold, wherein the first threshold is related to the voltage.
In some embodiments, the control module decreases the on width of the switching element when the proportional relationship is greater than a second threshold value, wherein the second threshold value is related to the voltage withstand value of the switching element and the voltage.
In some embodiments, the amplification module comprises a primary winding and a secondary winding, and the microwave heating device comprises a detection winding connected to the primary winding to obtain the resonance voltage through the detection winding.
In some embodiments, the switching element includes a collector, and the microwave heating apparatus includes a resonance voltage detection circuit connected to the collector to obtain the resonance voltage from a voltage of the collector.
A control method according to an embodiment of the present application, using the microwave heating apparatus according to any one of the above embodiments, includes:
detecting the voltage of the power supply module and the resonance voltage of the amplifying module;
and controlling the on-off state of a switch element of the microwave heating device according to the voltage and the resonance voltage.
In some embodiments, the controlling the on-off state of the switching element of the microwave heating device according to the voltage and the resonance voltage includes:
the control module increases a conduction width of the switching element when the proportional relationship is less than a first threshold, wherein the first threshold is related to the voltage.
In some embodiments, the controlling the on-off state of the switching element of the microwave heating device according to the voltage and the resonance voltage includes:
the control module decreases the on width of the switching element when the proportional relationship is greater than a second threshold value, wherein the second threshold value is related to the withstand voltage value of the switching element and the voltage.
A non-transitory computer-readable storage medium containing a computer program according to an embodiment of the present application implements a control method according to any one of the above embodiments when the computer program is executed by one or more processors.
The microwave heating device, the control method and the storage medium can obtain the voltage and the resonance voltage of the power supply module, so that the on-off state of the switch element is controlled according to the voltage and the resonance voltage, the peak value of the resonance voltage is guaranteed to be high enough, the resonance voltage can be reduced to a zero position, the loss of the switch element is reduced, in addition, the resonance voltage can be controlled, the phenomenon that the resonance voltage is too large so as to exceed the withstand voltage value of the switch element is avoided, and the effect of guaranteeing the service life of the switch element is achieved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic circuit diagram of a microwave heating apparatus according to an embodiment of the present application;
FIG. 2 is a schematic electrical circuit diagram of a microwave heating apparatus according to an embodiment of the present application;
FIG. 3 is a schematic block diagram of a microwave heating apparatus according to an embodiment of the present application;
FIG. 4 is a schematic circuit diagram of a related art microwave heating apparatus;
fig. 5 is an operation waveform diagram of a switching element of the related art;
fig. 6 is an operation waveform diagram of the switching element according to the embodiment of the present application;
FIG. 7 is a waveform diagram illustrating a range of resonant voltage values according to an embodiment of the present disclosure;
fig. 8 is a voltage waveform diagram of a switching element according to an embodiment of the present application;
fig. 9 is another voltage waveform diagram of the switching element of the embodiment of the present application;
fig. 10 is a flowchart of a control method according to the embodiment of the present application.
Reference numerals:
the microwave heating device comprises a microwave heating device 100, a power supply module 10, an amplifying module 20, a switching element 21, a primary winding 22, a secondary winding 23, a detection winding 24, a microwave source 30 and a control module 40.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the embodiments of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.
In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
Referring to fig. 1 to 3, a microwave heating apparatus 100 according to an embodiment of the present disclosure includes a power module 10, an amplifying module 20, a microwave source 30, and a control module 40. The power module 10 is configured to output a voltage, which is a dc voltage. And an amplifying module 20 connected to the power module 10 and the amplifying module 20 for applying a voltage, wherein the amplifying module 20 includes a switching element 21. The microwave source 30 is connected to the amplifying module 20 and is used for outputting a microwave signal under the driving of the pressurized voltage. The control module 40 is configured to detect a voltage of the power supply module and a resonant voltage of the amplifying module 20, and control an on/off state of the switching element 21 according to the voltage and the resonant voltage.
The microwave heating device 100 of the embodiment of the present application can obtain the voltage and the resonance voltage of the power module 10, thereby controlling the on-off state of the switching element 21 according to the voltage and the resonance voltage, thereby ensuring that the peak value of the resonance voltage is high enough, so that the resonance voltage can be reduced to a zero position, reducing the loss of the switching element 21, furthermore, the resonance voltage can be controlled, avoid the resonance voltage to be too large, so as to exceed the withstand voltage value of the switching element 21, thereby achieving the effect of ensuring the service life of the switching element 21.
Specifically, referring to fig. 4 and 5, in the related art, when the output of the microwave heating apparatus is reduced, the on width of the switching element is reduced, so that the energy stored in the primary winding of the amplifying module is reduced, thereby reducing the resonant voltage, and the waveform of the resonant voltage may be as shown in fig. 5. Since the switching loss (W) is equal to voltage (V) × current (I), if the switching element is turned on in a state where the voltage is not at zero, the switching element is greatly lost and the temperature rises, which is disadvantageous to the switching element.
According to the embodiment of the invention, the on-off state of the switching element 21, namely the conduction width of the switching element 21, is controlled by obtaining the voltage and the resonance voltage of the power module 10, so that the resonance voltage can form a waveform as shown in fig. 6 in a proper voltage range, namely the resonance voltage can be returned to a zero position, and the switching element 21 is conveniently conducted when the resonance voltage is returned to the zero position.
The microwave heating device 100 may include, but is not limited to, a microwave oven, a microwave rice cooker, a micro-steaming and baking integrated machine, and other microwave appliances.
The power supply module 10 may include an alternating current power supply terminal, a rectifying circuit, and a filtering circuit. Specifically, an alternating current voltage is input to the alternating current power supply terminal, the rectifying circuit rectifies the alternating current voltage input from the alternating current power supply terminal into a direct current voltage, the filtering circuit filters the voltage rectified by the rectifying circuit, and the voltage filtered by the filtering circuit is input to the amplifying module 20.
The filter circuit may include an inductive reactance and a capacitance to ground to adjust the waveform of the voltage so that the amplifying module 20 can operate in a more desirable state.
It should be added that the power module 10 may further include a measuring resistor, one end of the measuring resistor is connected to the filter circuit, the other end of the measuring resistor is connected to the switching element 21, and the control module 40 may be connected to the measuring resistor, and the current passing through the switching element 21 is obtained by measuring the current of the measuring resistor.
In one embodiment, the power module 10 includes a vehicle-mounted DC power supply (DC), which may be applied in the field of electric vehicles, where the electric vehicle uses a motor as a driving main body, and the power supply carried by the motor is a large-capacity and high-power DC power supply, and the voltage of the DC power supply is about 140V at the minimum and about 400V at the maximum; the load and power of the power supply mounted on the internal combustion engine automobile are relatively small, and generally, the load and power are 12V or 24V or other direct current power supplies with relatively low voltage.
As such, the microwave heating apparatus 100 according to the embodiment of the present application may be applied to an automobile, for example: microwave heating apparatus 100 may be an on-board microwave oven disposed in an electric vehicle, and an on-board DC power supply of the electric vehicle provides a current voltage to microwave heating apparatus 100100.
It should be noted that the above-mentioned examples and specific numerical values are provided for convenience of describing the implementation of the present application, and should not be construed as limiting the scope of the present application.
The amplifying module 20 may include, but is not limited to, a switching element 21, a resonant capacitor, and a transformer, the switching element 21 being connected with the power module 10 and controlled by the control module 40, the transformer including a primary winding 22 and a secondary winding 23, and in one embodiment, the transformer is a step-up transformer, i.e., the number of turns of the primary winding 22 is set to be greater than that of the secondary winding 23. The resonant capacitor is connected in parallel with the primary winding 22, and the resonant capacitor and the primary winding 22 together form a resonant voltage when the switching element 21 is turned off.
The switching element 21 may be a transistor, and a collector of the switching element 21 is connected to the transformer.
The control module 40 may include, but is not limited to, a voltage detection circuit connected to the power module 10 to detect a voltage of the power module 10, a current detection circuit for detecting a current flowing through the switching element 21, a resonance voltage detection circuit for detecting a resonance voltage, an arithmetic circuit for calculating based on the voltage, the current flowing through the switching element 21, and the resonance voltage to control the switching element 21 through the driving circuit, and a driving circuit.
In some embodiments, the microwave heating apparatus 100 further includes a high voltage rectifying module, an input terminal of the high voltage rectifying module is connected to the amplifying module 20, and an output terminal of the high voltage rectifying module is connected to the microwave source 30, so as to rectify the voltage output by the amplifying module 20, so that the microwave source 30 operates at a suitable voltage.
In certain embodiments, the microwave source 30 comprises a solid state source. The solid state source comprises a solid state active device which may be a transferred electron oscillator, or an avalanche diode oscillator, or a microwave transistor oscillator. The solid-state source can generate microwave signals with stable power, frequency and phase difference.
In certain embodiments, the microwave source 30 comprises a magnetron. The magnetron includes a vacuum device, which may be a diode placed in a constant magnetic field. Under the control of the constant magnetic field and the constant electric field which are perpendicular to each other, electrons in the tube interact with the high-frequency electromagnetic field to convert energy obtained from the constant electric field into microwave energy, thereby generating a microwave signal. The magnetron has the characteristics of large power, high efficiency, low working voltage, small size, light weight, low cost and the like.
It should be noted that the microwave source 30 according to the embodiment of the present application is illustrated by taking a magnetron as an example, and the magnetron is illustrated by taking the magnetron as an example for convenience of describing the implementation of the present application, and should not be construed as limiting the scope of the present application.
In one embodiment, the microwave heating apparatus 100 may be a turntable type microwave oven, and the microwave heating apparatus 100 includes a housing, a cavity, and a turntable, and a user may place food in the cavity, wherein the food may be different kinds and shapes of food. The microwave source 30 can feed microwave signals into the upper part or two sides of the cavity, and the turntable can move the position of food during heating, control the heating deviation of food and improve the uniformity of food heating.
In another embodiment, the microwave heating apparatus 100 may be a microwave oven including a rotating antenna, the microwave heating apparatus 100 includes a housing, a cavity, and a rotating antenna, a user may place food in the cavity, and the food may be different types and shapes of food. The cavity includes an inner wall through which a microwave signal can pass, and a microwave source 30 can be fed into the cavity by rotating the antenna to improve the uniformity of heating of the food.
In some embodiments, the control module 40 is configured to control the on/off state of the switching element 21 according to a proportional relation between the resonance voltage and the voltage.
With this arrangement, it is determined whether the resonance voltage is larger or smaller according to the proportional relationship between the resonance voltage and the voltage, thereby providing a basis for controlling the switching element 21.
Specifically, whether the resonance voltage is large enough to enable the resonance voltage to be returned to the zero position needs to be determined according to the relationship between the resonance voltage and the voltage, and the voltage borne by the switching element 21 is the sum of the voltage and the resonance voltage, so when the withstand voltage value of the switching element 21 is considered, that is, when the highest voltage value that the switching element 21 can bear in the normal operating state for a long time is considered, the voltage and the resonance voltage should be considered together.
The voltage in the present embodiment is the voltage of the power module 10.
In some embodiments, the control module 40 increases the on-width of the switching element 21 when the proportional relationship is less than a first threshold, wherein the first threshold is related to the voltage.
With this arrangement, in the case where the proportional relationship is smaller than the first threshold value, it can be judged that the resonance voltage is small, and thus the on width of the switching element 21 should be increased.
Specifically, the proportional relationship is the resonance voltage divided by the voltage, that is, the proportional relationship is smaller than the first threshold, and the value of the resonance voltage divided by the voltage is smaller than the first threshold. If the resonant voltage is allowed to oscillate to the zero position, the value of the resonant voltage should be greater than the supply voltage, and thus the first threshold value should be greater than or equal to 1.
In some embodiments, the control module 40 decreases the on width of the switching element 21 if the proportional relationship is greater than a second threshold, wherein the second threshold is related to the voltage and withstand voltage of the switching element 21.
With this arrangement, in the case where the proportional relationship is larger than the second threshold value, it can be judged that the resonance voltage is large, and thus the on width of the switching element 21 should be reduced.
Specifically, the proportional relationship is greater than the second threshold, i.e., the value of the resonance voltage divided by the voltage is greater than the second threshold. The second threshold is set in relation to the withstand voltage of the switching element 21 to ensure that the voltage across the switching element 21 is not excessive, so as to avoid the loss of the switching element 21 due to the excessive voltage. The voltage of the switching element 21 is the sum of the voltage and the resonance voltage, so that the voltage is subtracted from the withstand voltage value of the switching element 21 to obtain the maximum value of the resonance voltage, and the maximum value of the resonance voltage is divided by the voltage to obtain the second threshold value.
It should be noted that, referring to fig. 7, the upper limit and the lower limit of the resonant voltage are defined by setting the first threshold and the second threshold, so as to ensure that the value of the resonant voltage is not too low, avoid the resonant voltage from oscillating to a zero position, ensure that the value of the resonant voltage is not too high, and avoid the loss caused by the too high voltage passing through the switching element 21.
In some embodiments, referring to fig. 1 and 8, the amplifying module 20 includes a primary winding 22 and a secondary winding 23, and the microwave heating apparatus 100 includes a detection winding 24 connected to the primary winding 22 to obtain a resonant voltage through the detection winding 24.
The arrangement is such that the control module 40 can obtain a resonant voltage by sensing the winding 24.
Specifically, the resonance voltage generated by the primary winding 22 can be obtained based on the turn ratio of the detection winding 24 and the primary winding 22 and the output voltage of the detection winding 24.
In some embodiments, referring to fig. 2 and 9, the switching element 21 includes a collector, and the microwave heating apparatus 100 includes a resonant voltage detection circuit connected to the collector to obtain a resonant voltage according to a voltage of the collector.
The arrangement is such that the control module 40 can obtain a resonant voltage from the voltage of the collector.
Specifically, the voltage waveform of the collector of the switching element 21 can be seen from fig. 9, and the voltage of the collector is the sum of the power supply voltage and the resonance voltage, so that the resonance voltage can be obtained by subtracting the power supply voltage from the voltage of the collector.
Referring to fig. 10, the present invention further discloses a control method using the microwave heating apparatus 100 according to any of the above embodiments, the control method includes:
step S10, detecting the voltage of the power module 10 and the resonance voltage of the amplifying module 20;
in step S20, the on/off state of the switching element 21 of the microwave heating device 100 is controlled based on the voltage and the resonance voltage.
So set up, can obtain power module 10's voltage and the resonant voltage of amplification module 20, thereby according to voltage and resonant voltage control switch element 21's on-off state, thereby guarantee that resonant voltage's peak value is enough high, so that resonant voltage can descend to the zero-bit, reduce switch element 21's loss, in addition, resonance voltage can also be controlled, it is too big to avoid resonant voltage, so that exceed the withstand voltage's of switch element 21 the condition, thereby reach the effect of guarantee switch element 21's life.
In certain embodiments, step S20 includes:
in the case where the proportional relationship is smaller than a first threshold, which is related to the voltage, the control module 40 increases the on width of the switching element 21.
With this arrangement, it is determined whether the resonance voltage is larger or smaller according to the proportional relationship between the resonance voltage and the voltage, thereby providing a basis for controlling the switching element 21.
Specifically, whether the resonance voltage is large enough to enable the resonance voltage to be returned to the zero position needs to be determined according to the relationship between the resonance voltage and the voltage, and the voltage borne by the switching element 21 is the sum of the voltage and the resonance voltage, so when the withstand voltage value of the switching element 21 is considered, that is, when the highest voltage value that the switching element 21 can bear in the normal operating state for a long time is considered, the voltage and the resonance voltage should be considered together.
In certain embodiments, step S20 includes:
the control module 40 decreases the on width of the switching element 21 if the proportional relationship is greater than a second threshold value, wherein the second threshold value is related to the withstand voltage value and the voltage of the switching element 21.
With this arrangement, in the case where the proportional relationship is smaller than the first threshold value, it can be judged that the resonance voltage is small, and thus the on width of the switching element 21 should be increased.
Specifically, the proportional relationship is the resonance voltage divided by the voltage, that is, the proportional relationship is smaller than the first threshold, and the value of the resonance voltage divided by the voltage is smaller than the first threshold. If the resonant voltage is allowed to oscillate to the zero position, the value of the resonant voltage should be greater than the supply voltage, and thus the first threshold value should be greater than or equal to 1.
The present embodiments also provide a non-transitory computer-readable storage medium containing a computer program, where the computer program is executed by one or more processors to implement the steps of the control method according to any one of the above embodiments.
The non-volatile computer readable storage medium may be disposed in the microwave heating apparatus 100, or may be disposed in the cloud server, and the microwave heating apparatus 100 may communicate with the cloud server to obtain the corresponding program.
It will be appreciated that the computer program comprises computer program code. The computer program code may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), software distribution medium, and the like.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processing module-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the embodiments of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A microwave heating apparatus, characterized in that the microwave heating apparatus comprises:
the power supply module is used for outputting voltage, and the voltage is direct-current voltage;
the amplifying module is connected with the power supply module and used for pressurizing the voltage, and the amplifying module comprises a switching element;
the microwave source is connected with the amplifying module and is used for outputting a microwave signal under the driving of the pressurized voltage;
and the control module is used for detecting the voltage of the power supply module and the resonance voltage of the amplification module and controlling the on-off state of the switch element according to the voltage and the resonance voltage.
2. A microwave heating apparatus as in claim 1, wherein the control module is configured to control the on/off state of the switching element according to a proportional relationship between the resonant voltage and the voltage.
3. A microwave heating apparatus as in claim 2 wherein the control module increases the on width of the switching element if the proportional relationship is less than a first threshold, wherein the first threshold is related to the voltage.
4. A microwave heating apparatus according to claim 2, wherein the control module decreases the on width of the switching element in a case where the proportional relationship is larger than a second threshold value, wherein the second threshold value is related to the withstand voltage value of the switching element and the voltage.
5. A microwave heating device as in claim 1 wherein the amplifying module comprises a primary winding and a secondary winding, the microwave heating device comprising a sensing winding connected to the primary winding to obtain the resonant voltage through the sensing winding.
6. A microwave heating apparatus as claimed in claim 1, wherein the switching element includes a collector electrode, and the microwave heating apparatus includes a resonance voltage detection circuit connected to the collector electrode to obtain the resonance voltage from a voltage of the collector electrode.
7. A control method, characterized in that the control method comprises:
detecting the voltage of a power supply module and the resonance voltage of the amplifying module;
and controlling the on-off state of a switch element of the microwave heating device according to the voltage and the resonance voltage.
8. The control method according to claim 7, wherein the controlling of the on-off state of the switching element of the microwave heating apparatus based on the voltage and the resonance voltage comprises:
increasing a conduction width of the switching element when the proportional relationship is smaller than a first threshold value, wherein the first threshold value is related to the voltage.
9. The control method according to claim 7, wherein the controlling of the on-off state of the switching element of the microwave heating apparatus based on the voltage and the resonance voltage comprises:
when the proportional relationship is larger than a second threshold value, which is related to the withstand voltage value of the switching element and the voltage, the on width of the switching element is reduced.
10. A non-transitory computer-readable storage medium containing a computer program, wherein the control method of any one of claims 7 to 9 is implemented when the computer program is executed by one or more processors.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111268724.0A CN113923812B (en) | 2021-10-29 | Microwave heating apparatus, control method, and storage medium | |
| PCT/CN2022/089873 WO2022267689A1 (en) | 2021-06-21 | 2022-04-28 | Microwave heating apparatus, control method, control method for microwave generation apparatus, cooking apparatus, and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111268724.0A CN113923812B (en) | 2021-10-29 | Microwave heating apparatus, control method, and storage medium |
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| Publication Number | Publication Date |
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| CN113923812A true CN113923812A (en) | 2022-01-11 |
| CN113923812B CN113923812B (en) | 2024-05-31 |
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| CN113838647A (en) * | 2021-09-09 | 2021-12-24 | 广东美的厨房电器制造有限公司 | Transformer and household appliance |
| WO2022267689A1 (en) * | 2021-06-21 | 2022-12-29 | 广东美的厨房电器制造有限公司 | Microwave heating apparatus, control method, control method for microwave generation apparatus, cooking apparatus, and medium |
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