阅读说明：本技术 烹饪装置控制方法、装置、控制器和烹饪装置 (Cooking device control method and device, controller and cooking device ) 是由 杨勇 张春朝 倪林海 汪春节 袁庆杰 阮家俊 于 2021-07-23 设计创作，主要内容包括：本申请涉及一种烹饪装置控制方法、装置、控制器和烹饪装置,烹饪装置控制方法包括接收到启动指令后,通过至少一个加热器对烹饪装置内部进行加热,采集烹饪装置内部的温度数据,将加热过程分为多个烹饪阶段,每个烹饪阶段中,在温度数据达到预设蒸汽产生温度阈值时通过蒸汽模块产生蒸汽,可以实现在每个烹饪阶段达到适当温度时就产生蒸汽,提升食物口感,并且,无需用户了解烹饪的具体参数,解决不会烹饪人群的困扰,提升人们生活幸福感。(The utility model relates to a cooking device control method, a device, controller and cooking device, cooking device control method is including receiving behind the start instruction, heat cooking device inside through at least one heater, gather the inside temperature data of cooking device, divide into a plurality of culinary art stages with the heating process, in every culinary art stage, produce steam through the steam module when temperature data reaches preset steam production temperature threshold, just produce steam when every culinary art stage reaches suitable temperature, promote the food taste, and, need not the user and know the concrete parameter of culinary art, solve the puzzlement that can not cook the crowd, promote people's life happiness.)

1. A cooking apparatus control method, comprising:

after receiving a starting instruction, heating the interior of the cooking device through at least one heater;

collecting temperature data inside the cooking device;

and dividing the heating process into a plurality of cooking stages, wherein in each cooking stage, steam is generated through the steam module when the temperature data reaches a preset steam generation temperature threshold value.

2. The cooking apparatus control method of claim 1, wherein the at least one heater includes a first heater and a second heater, and the heating of the inside of the cooking apparatus by the at least one heater includes:

the first heater and the second heater are alternately driven to heat the inside of the cooking device by a duty ratio which is generated by PWM and has a preset duty ratio value.

3. The cooking device control method according to claim 2, wherein the preset duty value is 8%.

4. The cooking device control method of claim 1, wherein the steam module includes a steam generator and a steam pump, and the steam is generated by the steam module, comprising:

heating the steam generator by adopting a preset maximum power value;

opening a steam pump to generate steam when the steam generator is heated to a preset steam generation temperature threshold;

and turning off the steam pump when the temperature of the steam generator drops to a preset steam turning-off temperature threshold value.

5. The cooking appliance control method according to claim 4, wherein the preset steam generation temperature threshold range is 160 ℃ -200 ℃.

6. The cooking appliance control method according to claim 4, wherein the preset steam-off temperature threshold is 140 ℃.

7. The cooking apparatus control method according to claim 1, wherein the plurality of cooking stages includes:

a temperature-rising steam phase, wherein the control of the cooking device in the temperature-rising steam phase comprises:

heating the interior of the cooking device to a preset inertia temperature rise temperature through at least one heater within a preset first time period so as to rise to a preset target temperature according to the inertia temperature;

and generating steam through the steam module when the temperature data in the cooking device reaches a preset steam generation temperature threshold value.

8. The cooking appliance control method of claim 7, wherein the plurality of cooking stages comprise:

a first steady steam phase during which controlling the cooking device comprises:

after the temperature-rising steam phase is finished and the interval is a second time period, controlling the steam module to generate steam again, and closing the steam after the steam is continued for a third time period;

and controlling at least one heater to heat the interior of the cooking device through a PID algorithm so as to maintain the temperature of the interior of the cooking device at a preset stable temperature value.

9. The cooking appliance control method of claim 8, wherein the plurality of cooking stages comprise:

a second stable steam phase during which controlling the cooking device comprises:

after the first dimension steam stabilizing stage is finished and the fourth time interval is set, controlling the steam module to generate steam again, and controlling the steam module to be closed or opened through the internal temperature data of the cooking device;

and controlling all heaters to stop heating.

10. The cooking appliance control method of claim 9, wherein the plurality of cooking stages comprise:

a third dimensionally stable steam phase during which controlling the cooking device comprises:

and maintaining the control process of the second stable steam stage, and controlling the at least one heater to heat the interior of the cooking device again within a fifth time period from the preset cooking end time.

11. The cooking appliance control method of claim 7, wherein the first period of time is 12 minutes.

12. The cooking appliance control method of claim 8, wherein the second period of time is 2 minutes and the third period of time is 2 minutes.

13. The cooking appliance control method of claim 9, wherein the fourth time period is 4 minutes.

14. The cooking appliance control method of claim 10, wherein the fifth period of time is 2 minutes.

15. A cooking device control apparatus, comprising:

the heating module is used for heating the interior of the cooking device through at least one heater after receiving the starting instruction;

the acquisition module is used for acquiring temperature data inside the cooking device;

and the steam control module is used for dividing the heating process into a plurality of cooking stages, and in each cooking stage, steam is generated through the steam module when the temperature data reaches a preset steam generation temperature threshold value.

16. A controller, comprising:

one or more memories having executable programs stored thereon;

one or more processors configured to execute the executable program in the memory to implement the steps of the method of any one of claims 1-14.

17. A cooking device, comprising:

the controller, temperature sensor, steam module and at least one heater of claim 16;

the temperature sensor is used for acquiring temperature data inside the cooking device;

the at least one heater is used for heating the interior of the cooking device;

the steam module is used for generating steam;

the controller is respectively connected with the temperature sensor, the steam module and the at least one heater.

18. The cooking device of claim 17, wherein the steam module: a first steam pump and a steam generator.

Technical Field

The application belongs to the technical field of cooking devices, and particularly relates to a cooking device control method, a cooking device control device, a controller and a cooking device.

Background

With the improvement of living standard, more and more people pursue the health and taste of food, and with the change of times, modern young people live fast, therefore gradually to the machine dependence more and more high, cook products such as steaming and roasting all-in-one, steaming and roasting oven and receive people's wide liking. The cooking products only need to start a program of a specific device by one key, the system intelligently starts the cooking device with the set program and drives a load, heating is controlled according to the set control logic, and fresh delicious dishes can be made without knowing the specific details of cooking. However, the existing steaming and baking oven or steaming and baking all-in-one machine generates steam by using a steam boiler heating pipe to work for a long time, so that not only is the heating efficiency low, but also the service life of the boiler heating pipe is greatly reduced, and the cooked food is dry and hard due to the lag of the steam generation time, and the taste is influenced.

Disclosure of Invention

For overcoming current steaming and baking oven or steaming and baking all-in-one to a certain extent at least and using steam boiler heating pipe long-time work to produce steam, not only heating efficiency is not high, and boiler heating pipe's life can greatly reduced to, because steam produces the time lag, cause the food of culinary art to be dry and hard, influence the problem of taste, this application provides a cooking device control method, device, controller and cooking device.

In a first aspect, the present application provides a cooking apparatus control method, comprising:

after receiving a starting instruction, heating the interior of the cooking device through at least one heater;

collecting temperature data inside the cooking device;

and dividing the heating process into a plurality of cooking stages, wherein in each cooking stage, steam is generated through the steam module when the temperature data reaches a preset steam generation temperature threshold value.

Further, the at least one heater includes a first heater and a second heater, and the heating of the inside of the cooking apparatus by the at least one heater includes:

the first heater and the second heater are alternately driven to heat the inside of the cooking device by a duty ratio which is generated by PWM and has a preset duty ratio value.

Further, the preset duty value is 8%.

Further, the steam module includes a steam generator and a steam pump, and generates steam through the steam module, including:

heating the steam generator by adopting a preset maximum power value;

opening a steam pump to generate steam when the steam generator is heated to a preset steam generation temperature threshold;

and turning off the steam pump when the temperature of the steam generator drops to a preset steam turning-off temperature threshold value.

Further, the preset steam generation temperature threshold range is 160-200 ℃.

Further, the preset steam-off temperature threshold is 140 ℃.

Further, the plurality of cooking stages includes:

a temperature-rising steam phase, wherein the control of the cooking device in the temperature-rising steam phase comprises:

heating the interior of the cooking device to a preset inertia temperature rise temperature through at least one heater within a preset first time period so as to rise to a preset target temperature according to the inertia temperature;

and generating steam through the steam module when the temperature data in the cooking device reaches a preset steam generation temperature threshold value.

Further, the plurality of cooking stages includes:

a first steady steam phase during which controlling the cooking device comprises:

after the temperature-rising steam phase is finished and the interval is a second time period, controlling the steam module to generate steam again, and closing the steam after the steam is continued for a third time period;

and controlling at least one heater to heat the interior of the cooking device through a PID algorithm so as to maintain the temperature of the interior of the cooking device at a preset stable temperature value.

Further, the plurality of cooking stages includes:

a second stable steam phase during which controlling the cooking device comprises:

after the first dimension steam stabilizing stage is finished and the fourth time interval is set, controlling the steam module to generate steam again, and controlling the steam module to be closed or opened through the internal temperature data of the cooking device;

and controlling all heaters to stop heating.

Further, the plurality of cooking stages includes:

a third dimensionally stable steam phase during which controlling the cooking device comprises:

and maintaining the control process of the second stable steam stage, and controlling the at least one heater to heat the interior of the cooking device again within a fifth time period from the preset cooking end time.

Further, the first time period is 12 minutes.

Further, the second time period is 2 minutes, and the third time period is 2 minutes.

Further, the fourth time period is 4 minutes.

Further, the fifth time period is 2 minutes.

In a second aspect, the present application provides a cooking apparatus control apparatus comprising:

the heating module is used for heating the interior of the cooking device through at least one heater after receiving the starting instruction;

the acquisition module is used for acquiring temperature data inside the cooking device;

and the steam control module is used for dividing the heating process into a plurality of cooking stages, and in each cooking stage, steam is generated through the steam module when the temperature data reaches a preset steam generation temperature threshold value.

In a third aspect, the present application provides a controller comprising:

one or more memories having executable programs stored thereon;

one or more processors configured to execute the executable program in the memory to implement the steps of the method of any one of the first aspect.

In a fourth aspect, the present application provides a cooking apparatus comprising:

the controller, temperature sensor, steam module and at least one heater of the third aspect;

the temperature sensor is used for acquiring temperature data inside the cooking device;

the at least one heater is used for heating the interior of the cooking device;

the steam module is used for generating steam;

the controller is respectively connected with the temperature sensor, the steam module and the at least one heater.

Further, the steam module: first steam pump and steam generator

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

according to the cooking device control method, the cooking device control device, the controller and the cooking device, after the start instruction is received, the interior of the cooking device is heated through the at least one heater, the temperature data of the interior of the cooking device is collected, the heating process is divided into a plurality of cooking stages, in each cooking stage, steam is generated through the steam module when the temperature data reaches the preset steam generation temperature threshold value, the steam can be generated when the temperature data reaches the proper temperature in each cooking stage, the taste of food is improved, in addition, a user does not need to know the specific cooking parameters, the trouble that people cannot cook is solved, and the life happiness of people is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a flowchart of a cooking apparatus control method according to an embodiment of the present disclosure.

Fig. 2 is a flowchart of a cooking apparatus control method according to another embodiment of the present disclosure.

Fig. 3 is a graph illustrating control characteristics of a cooking apparatus according to an embodiment of the present disclosure.

Fig. 4 is a functional block diagram of a cooking apparatus control device according to an embodiment of the present application.

Fig. 5 is a functional structure diagram of a cooking apparatus according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a flowchart of a cooking apparatus control method according to an embodiment of the present application, and as shown in fig. 1, the cooking apparatus control method includes:

s11: after receiving a starting instruction, heating the interior of the cooking device through at least one heater;

s12: collecting temperature data inside the cooking device;

s13: the heating process is divided into a plurality of cooking stages, and in each cooking stage, steam is generated through the steam module when the temperature data reaches a preset steam generation temperature threshold value.

Traditional culinary art device or evaporate roast all-in-one and use steam boiler heating pipe work for a long time to produce steam, and not only heating efficiency is not high, and boiler heating pipe's life can greatly reduced to, because steam production time lags behind, cause the food of culinary art out to be dry and hard, influence the taste.

In this embodiment, cooking device control method is including receiving behind the start instruction, heat cooking device inside through at least one heater, gather the inside temperature data of cooking device, divide into a plurality of culinary art stages with the heating process, in every culinary art stage, produce steam through the steam module when temperature data reaches preset steam production temperature threshold value, just produce steam when every culinary art stage reaches suitable temperature, promote food taste, and, need not the user and know the concrete parameter of culinary art, solve the puzzlement that can not cook the crowd, promote people's life happiness.

An embodiment of the present invention provides another cooking apparatus control method, as shown in a flowchart illustrated in fig. 2, the cooking apparatus control method includes:

s21: after receiving a starting instruction, controlling the first heater and the second heater to alternately heat the interior of the cooking device;

in some embodiments, the first heater and the second heater are alternately driven to heat the inside of the cooking apparatus by a duty ratio that generates a preset duty ratio value through PWM.

The preset duty value is, for example, 8%.

Through the alternative heating of many heaters, make load output function keep its even characteristics, guarantee the safety of power consumption, also realize the effect of the control of more even output temperature and steam simultaneously.

S22: collecting temperature data inside the cooking device according to a preset collection frequency;

in some embodiments, the preset acquisition frequency is once every 200 milliseconds.

S23: the control of the cooking device in the warming steam phase comprises the following steps: heating the interior of the cooking device to a preset inertia temperature rise temperature through at least one heater within a preset first time period so as to rise to a preset target temperature according to the inertia temperature; and generating steam through the steam module when the temperature data in the cooking device reaches a preset steam generation temperature threshold value.

In some embodiments, a steam module includes a steam generator and a steam pump, generating steam by the steam module, including:

heating the steam generator by adopting a preset maximum power value;

opening a steam pump to generate steam when the steam generator is heated to a preset steam generation temperature threshold;

and turning off the steam pump when the temperature of the steam generator drops to a preset steam turning-off temperature threshold value.

The preset steam generation temperature threshold range is 160-200 ℃, preferably, the preset steam generation temperature threshold is 180 ℃, steam can be generated rapidly at 180 ℃, optimal time for turning on a steam pump can not be missed due to too high temperature threshold design, and the preset steam turning-off temperature threshold is 140 ℃. Examples are as follows:

when the steam generator is heated to 180 ℃, the controller controls the steam pump to be opened to generate steam, heat is consumed when the steam is generated, the temperature in the steam generator is reduced, when the temperature is reduced to be lower than 140 ℃, the steam pump is closed, the temperature in the steam generator is heated and increased, when the temperature reaches 180 ℃, the steam pump is started to generate steam, and the steam pump is circulated to generate proper steam.

S24: controlling the cooking device during the first dimensionally stable steam phase comprises: after the temperature-rising steam phase is finished and the interval is a second time period, controlling the steam module to generate steam again, and closing the steam after the steam is continued for a third time period; and controlling at least one heater to heat the interior of the cooking device through a PID algorithm so as to maintain the temperature of the interior of the cooking device at a preset stable temperature value.

S25: controlling the cooking device during the second stable steam phase comprises: after the first dimension steam stabilizing stage is finished and the fourth time interval is set, controlling the steam module to generate steam again, and controlling the steam module to be closed or opened through the internal temperature data of the cooking device; and controlling all heaters to stop heating.

S26: controlling the cooking device during the third dimensionally stable steam phase comprises: and maintaining the control process of the second stable steam stage, and controlling the at least one heater to heat the interior of the cooking device again within a fifth time period from the preset cooking end time.

The first period of time is, for example, 12 minutes; a second period of time of, for example, 2 minutes and a third period of time of, for example, 2 minutes; the fourth time period is, for example, 4 minutes; the fifth period of time is, for example, 2 minutes.

It should be noted that, in this embodiment, dividing the heating process into a warming steam cooking stage, a second steam stabilizing stage, and a third steam stabilizing stage is finally designed and completed through multiple times of accumulated experience according to experimental results, and the experimental results show that the cooking devices corresponding to the warming steam cooking stage, the second steam stabilizing stage, and the third steam stabilizing stage, which divide the heating process into the warming steam cooking stage, the second steam stabilizing stage, and the third steam stabilizing stage, cook the optimal taste.

As shown in fig. 3: t is the target temperature, the curing is 100 ℃, S is the target time, and the curing is 12 minutes.

S1 is a warming steam phase, S2 is a first dimensionally stable steam phase, S3 is a second dimensionally stable steam phase, S4 is a third dimensionally stable steam phase, H1 is used to indicate the time from S1 to S3, and T1 is used to indicate a fifth time period from the end time of cooking. In some embodiments, the cooking device specifically works as follows:

temperature-increasing steam stage S1: when the cooking program is started, the steam generator is heated by 1000W of maximum power, when the steam generator is heated to 180 ℃, the controller controls the steam pump to be turned on to generate steam, heat is consumed during steam generation, the internal temperature of the steam generator begins to drop, when the internal temperature of the steam generator drops to be lower than 140 ℃, the steam pump is turned off, at the moment, the internal of the steam generator is heated again to enable the internal temperature to rise to 180 ℃, the steam pump is turned on again to generate steam, and proper steam is generated in a circulating mode.

Meanwhile, the first heater (1000W) and the second heater (1000W) are alternately driven by PWM (Pulse Width Modulation) to generate a duty ratio of 8%, and the rapid temperature rise is facilitated by the alternate heating mode, so that the temperature rise process is accelerated, and the temperature rise time is shortened.

The current actual temperature in the cooking device is acquired by the temperature sensor every 200 milliseconds, and is compared and analyzed with the target temperature once the actual temperature is acquired, so that the temperature rise stage of S1 needs to be ended before the target temperature is reached due to the inertia temperature rise of the heater. By doing so, temperature overshoot can be prevented, which has an effect on the food material. At the moment, the steam module stops working, and drives the first heater and the second heater to alternately heat so that the current temperature is maintained in the effective range of the target temperature.

First warm-steam stage S2: and after S1 is finished, the steam module is started again after the set time (curing for 2 minutes) is set, the working control mode is consistent with the steam supplementing control mode at the S1 stage, and the steam is closed again after the steam module lasts for 2 minutes. And forming a closed loop temperature maintenance by adopting a PID algorithm.

Second dimension warm steam phase S3: supplementing steam after working for 4 minutes in the S3 stage, stopping heating of the first heater and the second heater in the stage, driving the steam generator by the steam generator through PWM (pulse width modulation) to output a duty ratio of 1000W equivalent power (100%), starting the steam pump to generate steam when the temperature range of the generator is 140-200 ℃, enabling the internal temperature of the steam generator to be in a descending trend due to the existence of moisture when the steam is generated, stopping the steam pump when the temperature is lower than 140 ℃, repeating the process, and counting down until S4 is ended;

third warm steam stage S4: and stopping the steam pump and the steam generator, starting the first heater and the second heater for alternate heating again when the distance between the first heater and the second heater is 2 minutes from the end of the whole cooking process, and simultaneously giving out a warning sound for finishing cooking.

After the cooking technique, the program is automatically terminated, and the system is reset to a standby mode to wait for the next trigger control.

In the embodiment, specific cooking parameters do not need to be known, the trouble that people cannot cook is solved, life happiness is promoted, the control method is solidified in the cooking device, the cooking effect made each time is kept consistent through a solidified program, and the control method is not limited by a hardware cooking device and has strong transportability.

An embodiment of the present invention provides a cooking apparatus control device, as shown in a functional structure diagram of fig. 4, the cooking apparatus control device including:

the heating module 41 is used for heating the interior of the cooking device through at least one heater after receiving the starting instruction;

an acquisition module 42 for acquiring temperature data inside the cooking device;

a steam control module 43 for dividing the heating process into a plurality of cooking stages, in each of which steam is generated by the steam module when the temperature data reaches a preset steam generation temperature threshold.

In this embodiment, after receiving the start instruction through heating module, heat cooking device inside through at least one heater, collection module gathers the inside temperature data of cooking device, steam control module divide into a plurality of culinary art stages with heating process, in every culinary art stage temperature data reaches and produces steam through steam module when predetermineeing steam production temperature threshold value, just can realize producing steam when every culinary art stage reaches suitable temperature, promotes food taste to, need not the specific parameter that the user understood the culinary art, solve the puzzlement that can not cook the crowd, promote people's life happiness. Meanwhile, the control method of the embodiment can also be transplanted to other hardware devices with the same specific frame and can achieve the same control and cooking effects.

An embodiment of the present invention provides a controller, including:

one or more memories having executable programs stored thereon;

one or more processors configured to execute the executable program in the memory to implement the steps of the method of the above-described embodiments.

An embodiment of the present invention provides a cooking apparatus, as shown in a functional structure diagram of fig. 5, the cooking apparatus including:

the controller 51, the temperature sensor 52, the steam module and the at least one heater as described in the above embodiments;

the temperature sensor 52 is used for collecting temperature data inside the cooking device;

at least one heater for heating the inside of the cooking device;

the steam module is used for generating steam;

the controller 51 is connected to the temperature sensor 52, the steam module and the at least one heater, respectively.

In some embodiments, the at least one heater comprises: a first heater 53 and a second heater 54.

The steam module includes a steam pump 55 and a steam generator 56.

In this embodiment, gather through temperature sensor the inside temperature data of cooking device, at least one heater is used for heating cooking device is inside, and the steam module is used for producing steam and just produces steam when every culinary art stage reaches suitable temperature, promotes food taste to, need not the user and knows the specific parameter of culinary art, solve the puzzlement that can not cook the crowd, promote people's life happiness. Meanwhile, the control method of the embodiment can also be transplanted to other hardware devices with the same specific frame and can achieve the same control and cooking effects.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.

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.

It should be understood that portions 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 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 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.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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, the schematic representations of the terms used above 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.

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 may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.