阅读说明：本技术 控制方法、微波烹饪电器及存储介质 (Control method, microwave cooking appliance and storage medium ) 是由 方友平 陈茂顺 唐相伟 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种控制方法、微波烹饪电器及存储介质。微波烹饪电器包括腔体及至少两个微波馈入装置。微波馈入装置包括微波发生器及与微波发生器连接的天线。微波发生器用于产生微波,天线用于使微波馈入腔体内对负载进行加热。控制方法包括：在利用所有微波馈入装置同时加热负载之前,控制每个微波馈入装置依次单独发射微波；在每个微波馈入装置单独发射微波的情况下,获取每个天线在前向检测通道的发射功率及所有天线在反向检测通道的反射功率；根据每个天线在前向检测通道的发射功率及所有天线在反向检测通道的反射功率,计算在每个微波馈入装置单独发射微波的情况下,负载对微波的吸收效率。上述控制方法,能够保证负载的烹饪效果。(The invention discloses a control method, a microwave cooking appliance and a storage medium. The microwave cooking appliance comprises a cavity and at least two microwave feed-in devices. The microwave feed-in device comprises a microwave generator and an antenna connected with the microwave generator. The microwave generator is used for generating microwaves, and the antenna is used for feeding the microwaves into the cavity to heat the load. The control method comprises the following steps: controlling each microwave feed-in to emit microwaves individually in turn before heating the load simultaneously with all microwave feed-ins; under the condition that each microwave feed-in device independently emits microwaves, acquiring the emission power of each antenna in a forward detection channel and the reflection power of all antennas in a reverse detection channel; and calculating the absorption efficiency of the load to the microwaves under the condition that each microwave feed-in device independently transmits the microwaves according to the transmitting power of each antenna in a forward detection channel and the reflected power of all the antennas in a reverse detection channel. The control method can ensure the cooking effect of the load.)

1. A control method is used for a microwave cooking appliance, and is characterized in that the microwave cooking appliance comprises a cavity and at least two microwave feed-in devices, each microwave feed-in device comprises a microwave generator and an antenna connected with the microwave generator, the microwave generator is used for generating microwaves, and the antennas are used for feeding the microwaves into the cavity to heat a load, and the control method comprises the following steps:

controlling each of said microwave feedthroughs to emit said microwaves individually in turn, prior to heating said load simultaneously with all of said microwave feedthroughs;

under the condition that each microwave feed-in device independently emits the microwaves, acquiring the emission power of each antenna in a forward detection channel and the reflection power of all the antennas in a reverse detection channel;

and calculating the absorption efficiency of the load on the microwaves under the condition that each microwave feed-in device independently transmits the microwaves according to the transmitting power of each antenna in a forward detection channel and the reflected power of all the antennas in a reverse detection channel.

2. The control method of claim 1, wherein the microwave cooking appliance includes a cooking process for heating the load, the cooking process including a plurality of cooking stages, each cooking stage heating the load simultaneously with all of the microwave feedthroughs, the control method comprising:

calculating the energy required by the load from the next cooking stage to the end of cooking according to the total energy required by the cooking process and the energy absorbed by the load in each cooking stage;

and configuring the working parameters of each microwave feed-in device in the next cooking stage according to the energy required by the load from the next cooking stage to the end of cooking and the microwave absorption efficiency of the load corresponding to each microwave feed-in device in the current cooking stage to the microwaves.

3. The control method according to claim 2, characterized by comprising:

and determining the total energy required by the cooking process according to the type of the load and the weight of the load before the load starts to cook.

4. The control method according to claim 2, characterized by comprising:

controlling all of said microwave feedthroughs to emit said microwaves simultaneously during each of said cooking phases;

respectively acquiring the transmitting power of each antenna in a forward detection channel and the reflected power of each antenna in a reverse detection channel;

and calculating the energy absorbed by the load in each cooking stage according to the transmitting power and the reflected power of all the antennas.

5. The control method according to claim 2, characterized by comprising:

determining a heating time period of the load at each of the cooking stages according to a total heating time period of the load.

6. A microwave cooking appliance is characterized by comprising a controller, a cavity and at least two microwave feed-in devices, wherein the controller is connected with the microwave feed-in devices, each microwave feed-in device comprises a microwave generator and an antenna connected with the microwave generator, the microwave generator is used for generating microwaves, the antennas are used for feeding the microwaves into the cavity to heat a load, the controller is used for controlling each microwave feed-in device to sequentially and independently emit the microwaves before all the microwave feed-in devices are used for simultaneously heating the load, and is used for acquiring the emission power of each antenna in a forward detection channel and the reflection power of all the antennas in a reverse detection channel under the condition that each microwave feed-in device individually emits the microwaves, and is used for acquiring the emission power of each antenna in the forward detection channel and the reflection power of all the antennas in the reverse detection channel according to the emission power of each antenna in the forward detection channel and the reflection power of each antenna in the reverse detection channel, calculating the absorption efficiency of the microwave by the load in case each of the microwave feedthroughs emits the microwave individually.

7. The microwave cooking appliance of claim 6, wherein the microwave cooking appliance includes a cooking process for heating the load, the cooking process includes a plurality of cooking stages, each cooking stage heats the load simultaneously with all of the microwave feedthroughs, the controller is configured to calculate an energy required by the load from a next cooking stage to an end of cooking based on a total energy required by the cooking process and an energy absorbed by the load during each cooking stage, and to configure operating parameters of each of the microwave feedthroughs during the next cooking stage based on the energy required by the load from the next cooking stage to the end of cooking and an absorption efficiency of the microwaves by each of the microwave feedthroughs for the current cooking stage.

8. The microwave cooking appliance of claim 7 wherein the controller is configured to determine the total energy required for the cooking process based on the type of load and the weight of the load before the load begins to cook.

9. The microwave cooking appliance of claim 7, wherein the controller is configured to control all the microwave feedthroughs to emit the microwaves simultaneously in each cooking stage, and to obtain the transmitted power of each antenna in a forward detection channel and the reflected power of each antenna in a reverse detection channel, respectively, and to calculate the energy absorbed by the load in each cooking stage according to the transmitted power and the reflected power of all the antennas.

10. The microwave cooking appliance of claim 7 wherein the controller is configured to determine a heating duration of the load at each of the cooking stages based on a total heating duration of the load.

11. The microwave cooking appliance according to claim 6, wherein the microwave feeding-in device comprises a circulator, a power divider and at least two load resistors, the circulator is connected between the microwave generator and the antenna, an output end of the circulator is connected with the power divider, and the power divider is connected with the at least two load resistors.

12. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the steps of the control method according to any one of claims 1 to 5.

Technical Field

The invention relates to the technical field of household appliances, in particular to a control method, a microwave cooking appliance and a storage medium.

Background

In the related art, a cooking appliance using a semiconductor radio frequency microwave source realizes zone heating by a multi-antenna phased array technology, and signal energy of the microwave source is fed into a heating cavity by a plurality of antennas. However, the plurality of antennas are concentrated in a closed cavity, a part of energy emitted by each antenna penetrates through food to be absorbed, the other part of energy is reflected by the inner wall of the heating cavity and then flows back to the antenna to flow into the reverse detection channel, and the energy received by each reverse detection channel not only contains signals emitted by the antenna of the reverse detection channel, but also contains signals emitted by other antennas. This may cause inaccurate calculation of the absorption efficiency of the food corresponding to a single antenna, which may result in inaccurate configuration of the operating parameters of each antenna, and thus affect the cooking effect of the food.

Disclosure of Invention

The embodiment of the invention provides a control method, a microwave cooking appliance and a storage medium.

The control method of the embodiment of the invention is used for a microwave cooking appliance, the microwave cooking appliance comprises a cavity and at least two microwave feed-in devices, each microwave feed-in device comprises a microwave generator and an antenna connected with the microwave generator, the microwave generator is used for generating microwaves, the antenna is used for feeding the microwaves into the cavity to heat a load, and the control method comprises the following steps:

controlling each of said microwave feedthroughs to emit said microwaves individually in turn, prior to heating said load simultaneously with all of said microwave feedthroughs;

under the condition that each microwave feed-in device independently emits the microwaves, acquiring the emission power of each antenna in a forward detection channel and the reflection power of all the antennas in a reverse detection channel;

and calculating the absorption efficiency of the load on the microwaves under the condition that each microwave feed-in device independently transmits the microwaves according to the transmitting power of each antenna in a forward detection channel and the reflected power of all the antennas in a reverse detection channel.

According to the control method provided by the embodiment of the invention, under the condition that each microwave feed-in device independently emits microwaves, the microwave absorption efficiency of the load (food) corresponding to each microwave feed-in device can be accurately calculated according to the detected emission power of each antenna and the reflection power of all the antennas, so that the subsequent configuration of the working parameters of each microwave feed-in device is accurate, and the cooking effect of the load is ensured.

In some embodiments, the microwave cooking appliance includes a cooking process that heats the load, the cooking process including a plurality of cooking stages, each cooking stage heating the load simultaneously with all of the microwave feedthroughs, the control method comprising:

calculating the energy required by the load from the next cooking stage to the end of cooking according to the total energy required by the cooking process and the energy absorbed by the load in each cooking stage;

and configuring the working parameters of each microwave feed-in device in the next cooking stage according to the energy required by the load from the next cooking stage to the end of cooking and the microwave absorption efficiency of the load corresponding to each microwave feed-in device in the current cooking stage to the microwaves.

In certain embodiments, the control method comprises:

and determining the total energy required by the cooking process according to the type of the load and the weight of the load before the load starts to cook.

In certain embodiments, the control method comprises:

controlling all of said microwave feedthroughs to emit said microwaves simultaneously during each of said cooking phases;

respectively acquiring the transmitting power of each antenna in a forward detection channel and the reflected power of each antenna in a reverse detection channel;

and calculating the energy absorbed by the load in each cooking stage according to the transmitting power and the reflected power of all the antennas.

In certain embodiments, the control method comprises:

determining a heating time period of the load at each of the cooking stages according to a total heating time period of the load.

The microwave cooking appliance comprises a controller, a cavity and at least two microwave feed-in devices, wherein the controller is connected with the microwave feed-in devices, each microwave feed-in device comprises a microwave generator and an antenna connected with the microwave generator, the microwave generator is used for generating microwaves, the antennas are used for feeding the microwaves into the cavity to heat a load, the controller is used for controlling each microwave feed-in device to sequentially and independently emit the microwaves before all the microwave feed-in devices are used for simultaneously heating the load, and is used for acquiring the emission power of each antenna in a forward detection channel and the reflection power of all the antennas in a reverse detection channel under the condition that each microwave feed-in device independently emits the microwaves, and is used for acquiring the emission power of each antenna in the forward detection channel and the reflection power of all the antennas in the reverse detection channel according to the emission power of each antenna in the forward detection channel and the reflection power of each antenna in the reverse detection channel, calculating the absorption efficiency of the microwave by the load in case each of the microwave feedthroughs emits the microwave individually.

According to the microwave cooking appliance provided by the embodiment of the invention, under the condition that each microwave feed-in device independently emits microwaves, the microwave absorption efficiency of the load (food) corresponding to each microwave feed-in device can be accurately calculated according to the detected emission power of each antenna and the reflection power of all the antennas, so that the subsequent configuration of the working parameters of each microwave feed-in device is accurate, and the cooking effect of the load is ensured.

In some embodiments, the microwave cooking appliance includes a cooking process for heating the load, the cooking process including a plurality of cooking stages, each cooking stage heating the load simultaneously with all of the microwave feedthroughs, the controller is configured to calculate an amount of energy required by the load from a next cooking stage to an end of cooking based on a total amount of energy required by the cooking process and an amount of energy absorbed by the load during each cooking stage, and to configure operating parameters of each of the microwave feedthroughs for the next cooking stage based on an amount of energy required by the load from the next cooking stage to the end of cooking and an absorption efficiency of the microwaves by each of the microwave feedthroughs for a current cooking stage.

In some embodiments, the controller is configured to determine the total energy required for the cooking process based on a type of the load and a weight of the load before the load begins to cook.

In some embodiments, the controller is configured to control all the microwave feedthroughs to emit the microwaves simultaneously in each of the cooking stages, and to obtain the transmitting power of each of the antennas in the forward detection channel and the reflected power of each of the antennas in the reverse detection channel, respectively, and to calculate the energy absorbed by the load in each of the cooking stages according to the transmitting power and the reflected power of all the antennas.

In some embodiments, the controller is configured to determine a heating duration of the load at each of the cooking stages based on a total heating duration of the load.

In some embodiments, the microwave feedthrough includes a circulator, a power divider, and at least two load resistors, the circulator is connected between the microwave generator and the antenna, an output of the circulator is connected to the power divider, and the power divider is connected to the at least two load resistors.

A computer-readable storage medium of an embodiment of the present invention has a computer program stored thereon, which when executed by a processor, implements the steps of the control method of any of the above-described embodiments.

According to the computer-readable storage medium of the embodiment of the invention, under the condition that each microwave feed-in device independently emits microwaves, the absorption efficiency of the load (food) corresponding to each microwave feed-in device on the microwaves can be accurately calculated according to the detected emission power of each antenna and the reflection power of all the antennas, so that the subsequent configuration of the working parameters of each microwave feed-in device is accurate, and the cooking effect of the load is ensured.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention 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 flow chart of a control method according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a microwave cooking appliance according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a microwave cooking appliance according to an embodiment of the present invention;

FIG. 4 is another schematic flow chart diagram of a control method according to an embodiment of the present invention;

fig. 5 is another flowchart illustrating a control method according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, 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 only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any 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 invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the embodiments of the present invention, 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 being fixedly connected, detachably connected, or integrally connected; 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 invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1 to 3, a control method according to an embodiment of the present invention is applied to a microwave cooking appliance 100. The microwave cooking apparatus 100 includes a cavity 10 and at least two microwave feedthroughs 20. The microwave feedthrough 20 includes a microwave generator 22 and an antenna 24 connected to the microwave generator 22. A microwave generator 22 is used to generate microwaves and an antenna 24 is used to feed the microwaves into the cavity 10 to heat the load. The control method comprises the following steps:

step S11: controlling each microwave feedthrough 20 to emit microwaves individually in turn before heating the load simultaneously with all microwave feedthroughs 20;

step S13: under the condition that each microwave feed-in device 20 independently emits microwaves, acquiring the emission power of each antenna 24 in a forward detection channel and the reflection power of all antennas 24 in a reverse detection channel;

step S15: the microwave absorption efficiency of the load in the case where each microwave feedthrough 20 emits microwaves individually is calculated from the transmitted power of each antenna 24 in the forward detection path and the reflected power of all antennas 24 in the reverse detection path.

The control method according to the embodiment of the present invention may be implemented by the microwave cooking appliance 100 according to the embodiment of the present invention. Specifically, referring to fig. 1 and 2, the microwave cooking apparatus 100 includes a controller 30, a cavity 10 and at least two feeding-in devices 20, wherein the controller 30 is connected to the feeding-in devices 20. The controller 30 is configured to control each of the microwave feedthroughs 20 to sequentially and individually emit microwaves before heating the load with all of the microwave feedthroughs 20 at the same time, and to obtain the transmission power of each of the antennas 24 in the forward detection path and the reflection power of all of the antennas 24 in the reverse detection path in the case where each of the microwave feedthroughs 20 individually emits microwaves, and to calculate the absorption efficiency of the load on the microwaves in the case where each of the microwave feedthroughs 20 individually emits microwaves according to the transmission power of each of the antennas 24 in the forward detection path and the reflection power of all of the antennas 24 in the reverse detection path.

According to the control method and the microwave cooking appliance 100 of the embodiment of the invention, under the condition that each microwave feed-in device 20 independently emits microwaves, the absorption efficiency of the load (food) corresponding to each microwave feed-in device 20 to the microwaves can be accurately calculated according to the detected emission power of each antenna 24 and the reflection power of all the antennas 24, so that the subsequent configuration of the working parameters of each microwave feed-in device 20 is accurate, and the cooking effect of the load is ensured.

It will be appreciated that in embodiments of the present invention, the microwave cooking appliance 100 employs a semiconductor radio frequency microwave source, including at least two microwave feedthroughs 20, each microwave feedthru 20 including a microwave generator 22 and an antenna 24 connected to the microwave generator 22. In the illustrated embodiment, the microwave feedthroughs 20 are provided at the top of the chamber 10, and the number of the microwave feedthroughs 20 is four. In other embodiments, the number of the microwave feedthroughs 20 can be two, three, or more than four, and is not limited in particular. Microwave cooking appliance 100 includes, but is not limited to, a microwave oven, and the like.

When the microwave cooking appliance 100 is operated to heat a load, all the microwave feedthroughs 20 are operated simultaneously, the operating parameters of each microwave feedthru 20 are configured by the multi-antenna phased array technology to realize zone heating, and the microwaves generated by each microwave generator 22 are fed into the cavity 10 through the corresponding antenna 24. Referring to fig. 3, each microwave feeding device 20 is provided with a first microwave detector 211 in the forward detection path for detecting the transmitting power of its antenna 24, and a second microwave detector 212 in the reverse detection path for detecting the microwave power (reflected power) received by its antenna 24.

Since the plurality of antennas 24 simultaneously emit microwaves when the microwave cooking appliance 100 operates, a mutual coupling phenomenon of the antennas 24 may occur, that is, a part of the microwaves emitted from each antenna 24 penetrate through the load (food) to be absorbed, and another part of the microwaves reflected by the inner wall of the cavity 10 is received by the antenna 24 itself or received by other antennas 24. The microwaves received at the reverse detection path of each antenna 24 include both the microwaves transmitted by the antenna 24 itself and the microwaves transmitted by the other antennas 24. In the case where at least two microwave feedthroughs 20 are operated simultaneously, the microwave absorption efficiency (microwave absorption efficiency of the load corresponding to each antenna 24) of each microwave feedthru 20 is calculated to be inaccurate according to the transmission power detected by each antenna 24 in the forward detection path and the reflected power detected by each antenna 24 in the reverse detection path.

Thus, in the present invention, each microwave feedthrough 20 is controlled to emit microwaves individually in turn before the load is heated simultaneously with all of the microwave feedthroughs 20. Thus, under the condition that each microwave feeding device 20 independently emits microwaves, the transmission power of each antenna 24 in the forward detection channel and the reflection power of all antennas 24 in the reverse detection channel (the reflection power received by the antenna 24 itself and the reflection power received by other antennas 24 are both derived from the transmission power of the antenna 24 itself) can be obtained through detection, the absorption power of the load corresponding to each microwave feeding device 20 to microwaves is obtained by subtracting the reflection power of all antennas 24 in the reverse detection channel from the transmission power of each antenna 24 in the forward detection channel, and the ratio of the absorption power to the transmission power is the absorption efficiency of the load corresponding to each microwave feeding device 20 to microwaves. In this way, considering the situation that the microwave part emitted by each antenna 24 is received by other antennas 24, the influence of mutual coupling of the antennas 24 is eliminated, and the calculated absorption efficiency accuracy of the load corresponding to each microwave feeding device 20 on the microwaves is high.

Referring to fig. 4, in some embodiments, microwave cooking appliance 100 includes a cooking process that heats a load, where the cooking process includes a plurality of cooking stages, each cooking stage heating the load simultaneously using all of the microwave feedthroughs 20. The control method comprises the following steps:

step S17: calculating the energy required by the load from the next cooking stage to the end of cooking according to the total energy required by the cooking process and the energy absorbed by the load in each cooking stage;

step S19: the operating parameters of each microwave feedthrough 20 in the next cooking stage are configured according to the energy required by the load from the next cooking stage to the end of cooking and the microwave absorption efficiency of the load corresponding to each microwave feedthrough 20 in the current cooking stage.

The control method of the above embodiment can be implemented by the microwave cooking appliance 100 of the present embodiment. Specifically, the controller 30 is configured to calculate the energy required by the load from the next cooking stage to the end of cooking according to the total energy required by the cooking process and the energy absorbed by the load in each cooking stage, and configure the operating parameters of each microwave feedthrough 20 in the next cooking stage according to the energy required by the load from the next cooking stage to the end of cooking and the microwave absorption efficiency of each microwave feedthrough 20 corresponding to the current cooking stage.

It will be appreciated that in this embodiment the cooking process of heating the load comprises a plurality of cooking stages, for example the load is uncooked. The different dielectric constants of the load during the different cooking stages result in different microwave absorption efficiencies of the load during the different cooking stages. That is, in the case where all the microwave feedthroughs 20 emit microwaves at the same time, the microwave absorption efficiency of the load in the same cooking stage is not changed, that is, the microwave absorption efficiency of the load corresponding to each microwave feedthru 20 in the antenna 24 is not changed in the same cooking stage.

Each cooking stage emits a microwave heating load simultaneously using all of the microwave feedthroughs 20. In the event that it is desired to obtain the efficiency of microwave absorption by the load for each microwave feedthrough 20 in order to configure the operating parameters of each microwave feedthrough 20 for the next cooking stage in the current cooking stage before beginning each cooking stage (i.e., before heating the load simultaneously with all microwave feedthroughs 20). In step S17, the energy required by the load from the next cooking stage to the end of cooking can be obtained by subtracting the energy absorbed by the load for each cooking stage that has ended from the total energy required by the cooking process. In step S19, the operating parameters of each microwave feedthrough 20 in the next cooking stage can be accurately configured according to the energy required by the load from the next cooking stage to the end of cooking and the microwave absorption efficiency of the load corresponding to each microwave feedthrough 20 in the current cooking stage, so as to ensure the cooking effect of the load. The operating parameters include frequency, power, phase, etc. of the transmitted microwaves.

In one embodiment, the cooking process of heating the load includes three cooking stages, respectively a first cooking stage, a second cooking stage, and a third cooking stage, in chronological order. Before starting the first cooking phase, the microwave absorption efficiency of the load is obtained in the case where each microwave feedthrough 20 emits microwaves individually; the operating parameters of each of the feeds 20 during the first cooking stage are then configured based on the load's total energy required for the cooking process and the efficiency of microwave absorption by the load in the case where each feed 20 emits microwaves individually before cooking begins. Acquiring the microwave absorption efficiency of the load under the condition that each microwave feed-in device 20 independently emits microwaves before the first cooking stage is ended and the second cooking stage is started; then subtracting the energy absorbed by the load in the first cooking stage from the total energy required by the load in the cooking process to obtain the energy required by the load from the second cooking stage (the next cooking stage) to the end of cooking; the operating parameters of each microwave feedthrough 20 in the second cooking stage (next cooking stage) are configured according to the energy required by the load from the second cooking stage (next cooking stage) to the end of cooking and the absorption efficiency of the load to microwaves in the case where each microwave feedthrough 20 individually emits microwaves in the first cooking stage (current cooking stage). And the like until the cooking is finished.

In other embodiments, the cooking process that heats the load includes a cooking phase, such as where the load is a delicatessen, that heats the load simultaneously with all of the microwave feedthroughs 20. Before starting cooking, acquiring the microwave absorption efficiency of the load under the condition that each microwave feedthrough 20 individually emits microwaves; the load-to-microwave absorption efficiency of each microwave feedthrough 20 is then configured to operate parameters of each microwave feedthrough 20 throughout the cooking process based on the total energy required by the load during the cooking process and the individual microwave emissions from each feedthrough 20 prior to starting the cooking process.

In some embodiments, a control method comprises: the total energy required for the cooking process is determined according to the type of load and the weight of the load before the start of cooking.

The control method of the above embodiment can be implemented by the microwave cooking appliance 100 of the present embodiment, and specifically, the controller 30 is configured to determine the total energy required for the cooking process according to the type of the load and the weight of the load before the start of cooking.

It is understood that the total energy required by the load during the cooking process is related to the kind and weight of the load, and corresponding data can be obtained through experiments and experience and stored in the microwave cooking appliance 100. In one embodiment, microwave cooking appliance 100 includes an input device for a user to select the type and weight of the input load. The controller 30 is connected to the input device, and can acquire the kind and weight information of the load from the input device, and then determine the total energy required for the cooking process according to the acquired kind and weight information. In other embodiments, the microwave cooking appliance 100 may include an input device and a weight detecting device, and when a user puts a load into the cavity 10 of the microwave cooking appliance 100, the weight detecting device may detect the weight of the load before the load starts cooking, and the user only needs to input the type of the load through the input device. The controller 30 is connected to the input device and the weight detecting device, and can acquire the type information of the load from the input device and the weight of the load before the start of cooking from the weight detecting device.

Referring to fig. 5, in some embodiments, the control method includes:

step S162: controlling all microwave feedthroughs 20 to emit microwaves simultaneously during each cooking phase;

step S164: respectively acquiring the transmitting power of each antenna 24 in the forward detection channel and the reflected power of each antenna 24 in the reverse detection channel;

step S166: the energy absorbed by the load at each cooking stage is calculated from the transmitted and reflected power of all the antennas 24.

The control method of the above embodiment can be implemented by the microwave cooking appliance 100 of the present embodiment. Specifically, the controller 30 is configured to control all the microwave feeding devices 20 to emit microwaves simultaneously in each cooking stage, and to obtain the transmitting power of each antenna 24 in the forward detection channel and the reflected power of each antenna 24 in the reverse detection channel, respectively, and to calculate the energy absorbed by the load in each cooking stage according to the transmitting power and the reflected power of all the antennas 24.

It is understood that, in the same cooking stage, the transmitting power of each antenna 24 in the forward detection channel and the reflected power of the reverse detection channel are substantially constant, the transmitting energy corresponding to each antenna 24 is the transmitting power detected once and the heating duration of the cooking stage, and the reflected energy corresponding to each antenna 24 is the reflected power detected once and the heating duration of the cooking stage. Of course, the average of the multiple detected transmitted powers may be multiplied by the heating time of the cooking stage to calculate the transmitted energy corresponding to each antenna 24, and the average of the multiple detected reflected powers may be multiplied by the heating time of the cooking stage to calculate the reflected energy corresponding to each antenna 24. The transmitted energy corresponding to each antenna 24 minus the reflected energy corresponding to each antenna 24 is the absorbed energy of the load corresponding to each antenna 24 during the cooking stage. The energy absorbed by the load in each cooking stage can be obtained by adding the energy absorbed by the load corresponding to each antenna 24 in the cooking stage.

Of course, the transmission power of each antenna 24 in the forward detection channel in one cooking stage may be added to obtain the transmission power of all antennas 24 and the reflection power of each antenna 24 in the reverse detection channel in one cooking stage to obtain the reflection power of all antennas 24, then the transmission power of all antennas 24 is multiplied by the heating time duration in the cooking stage to obtain the transmission energy corresponding to all antennas 24 and the reflection power of all antennas 24 is multiplied by the heating time duration in the cooking stage to obtain the reflection energy corresponding to all antennas 24, and then the transmission energy corresponding to all antennas 24 is subtracted by the reflection energy corresponding to all antennas 24, so as to obtain the energy absorbed by the load in each cooking stage.

In some embodiments, a control method comprises: the heating time period of the load at each cooking stage is determined according to the total heating time period of the load.

The control method of the above embodiment can be implemented by the microwave cooking appliance 100 of the present embodiment. Specifically, the controller 30 is configured to determine a heating time period of the load at each cooking stage according to a total heating time period of the load.

It will be appreciated that the load may be subjected to different cooking stages during the cooking process, and that the heating duration for each cooking stage may be divided according to the total heating duration of the load in combination with experimental and empirical data. From experimental and empirical summaries, an optimal cooking profile for the load can be obtained, which includes the number of cooking phases and the heating duration for each cooking phase.

In one embodiment, the load undergoes a first cooking phase, a second cooking phase and a third cooking phase during the cooking process, the total heating period being 30 minutes, the heating period of the first cooking phase may be 6 minutes, the heating period of the second cooking phase may be 14 minutes and the heating period of the third cooking phase may be 10 minutes. For the same load, if the total heating time period selected by the user is different, the proportion of the heating time period of each cooking stage to the total heating time period is unchanged.

Referring to fig. 3, in some embodiments, the microwave feedthrough 20 includes a circulator 26, a power divider 28, and at least two load resistors 23. The circulator 26 is connected between the microwave generator 22 and the antenna 24, the output end of the circulator 26 is connected with the power divider 28, and the power divider 28 is connected with at least two load resistors 23.

It can be understood that when the microwave cooking appliance 100 is in operation, due to the mutual coupling effect of the antennas 24, each antenna 24 receives the microwave emitted by the antenna 24 itself and the microwaves emitted by other antennas 24, so that the microwave power received by each antenna 24 is larger than the microwave power normally received by the single antenna 24, which may cause the load resistor 23 of the reverse detection channel to be damaged. In this embodiment, the output end of the circulator 26 is connected to the power divider 28, and the power divider 28 is connected to at least two load resistors 23, respectively, so as to divide the microwave, reduce the power, and solve the problem of burnout caused by insufficient power capacity of the load resistors 23. In the illustrated embodiment, the power divider 28 is a 1-to-3 microstrip power divider, and is connected to three 50ohm load resistors 23.

It should be noted that the specific values mentioned above are only for illustrating the implementation of the invention in detail and should not be construed as limiting the invention. In other examples or embodiments or examples, other values may be selected in accordance with the present invention and are not specifically limited herein.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the control method of any of the above embodiments.

For example, in the case where the program is executed by a processor, the following control method is implemented:

step S11: controlling each microwave feedthrough 20 to emit microwaves individually in turn before heating the load simultaneously with all microwave feedthroughs 20;

step S13: under the condition that each microwave feed-in device 20 independently emits microwaves, acquiring the emission power of each antenna 24 in a forward detection channel and the reflection power of all antennas 24 in a reverse detection channel;

step S15: the microwave absorption efficiency of the load in the case where each microwave feedthrough 20 emits microwaves individually is calculated from the transmitted power of each antenna 24 in the forward detection path and the reflected power of all antennas 24 in the reverse detection path.

The computer-readable storage medium may be disposed in the microwave cooking appliance 100, or may be disposed in the cloud server, and the microwave cooking appliance 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 controller 30 of the microwave cooking appliance 100 is a single chip integrated with a processor, a memory, a communication module, and the like. The processor may refer to a processor included in the controller 30. 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, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean 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 invention. 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 alternate implementations are included within the scope of the preferred embodiment of the present invention 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 invention.

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 embodiments of the present invention 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 when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention 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 invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.