Microwave device control method, microwave device and controller

Abstract

The embodiment of the present application provides a microwave equipment control method, a microwave equipment and a controller. The microwave equipment comprises a cooking cavity, a microwave conducting assembly, a magnetron and a waveguide. The magnetron is configured to generate microwaves. The waveguide is connected to the magnetron and the cooking cavity, and is configured to guide the microwaves generated by the magnetron into the cooking cavity. A waveguide coupler is arranged in the microwave conducting assembly, and is configured to detect reflected wave energy of the microwaves in the cooking cavity. A stirring antenna is arranged on the cavity wall at the bottom of the cooking cavity, and is configured to adjust the distribution of the microwaves in the cooking cavity by rotation. The microwave equipment and the microwave equipment control method can change the positions of the cold zone and the hot zone in the cooking cavity, and improve the heating efficiency of the microwave equipment.

Description

Technical Field

[0001] This application relates to the field of cooking equipment control, and more particularly to a microwave equipment control method, microwave equipment, and controller. Background Technology

[0002] With the development of science and technology, microwave ovens have become widely used in daily life. Microwave ovens primarily operate based on the absorption and conversion of microwave energy. Specifically, a magnetron generates microwaves, which are transmitted to the microwave oven cavity through a waveguide. Inside the cavity, the microwaves interact with water molecules in the food, causing the water molecules to vibrate and generate heat, thus achieving heating.

[0003] However, due to differences in cavity size and structure and microwave wavelength, microwaves generated by the magnetron and transmitted through the waveguide into the cavity are reflected by the cavity walls, creating different standing wave fields. This results in different reflected waves superimposing within the cavity, forming cold and hot zones at different locations. Since these cold and hot zones are fixed in position, the food is heated unevenly. To address this, manufacturers add a rotating turntable to allow food to rotate within the microwave oven. However, this method still cannot change the fixed position of the cold and hot zones within the microwave oven cavity and cannot effectively improve the heating efficiency. Summary of the Invention

[0004] This application provides a microwave device control method, a microwave device, and a controller to change the position of the cold and hot zones within the microwave device cavity and improve the heating efficiency of the microwave device.

[0005] In a first aspect, embodiments of this application provide a microwave device, including:

[0006] Cooking cavity;

[0007] A microwave conduction assembly includes a magnetron and a waveguide; the magnetron is configured to generate microwaves; the waveguide connects the magnetron and the cooking cavity, and is configured to guide the microwaves generated by the magnetron into the cooking cavity.

[0008] A waveguide coupler is disposed within the microwave conduction assembly and is configured to detect the reflected energy of microwaves within the cooking cavity.

[0009] A stirring antenna is installed on the cavity wall at the bottom of the cooking cavity. The stirring antenna is configured to adjust the distribution of microwaves within the cooking cavity by rotating.

[0010] In one possible implementation, the microwave device further includes:

[0011] An adjustable speed motor is connected to a stirring antenna and is configured to drive the stirring antenna to rotate.

[0012] In one possible implementation, the adjustable speed motor is rigidly connected to or driven by the stirring antenna.

[0013] In one possible implementation, the microwave device further includes:

[0014] Antenna position detection device, which is configured to detect the position of a stirring antenna.

[0015] Secondly, embodiments of this application provide a microwave device control method, applied to the aforementioned microwave device, comprising:

[0016] Upon receiving a microwave function activation command, the microwave conduction component is controlled to guide the generated microwaves into the cooking cavity of the microwave device, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at an initial speed starting from the antenna's starting position; the stirring antenna is located on the cavity wall at the bottom of the cooking cavity to adjust the distribution of microwaves within the cooking cavity;

[0017] During the rotation of the stirring antenna, the real-time rotation speed of the stirring antenna is dynamically determined based on the real-time reflected wave energy of the microwaves inside the cooking cavity, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotation speed.

[0018] In one possible implementation, the real-time rotational speed of the stirring antenna is dynamically determined based on the real-time reflected microwave energy within the cooking cavity, and an adjustable-speed motor is controlled to drive the stirring antenna to rotate at the real-time rotational speed, including:

[0019] When the stirring antenna is detected to have rotated to the antenna's starting position, the energy of the reflected microwave wave inside the cooking cavity is detected to obtain the real-time reflected wave energy.

[0020] The real-time rotation speed is calculated based on the real-time reflected wave energy, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotation speed for a first duration.

[0021] After the first duration of rotation ends, the adjustable speed motor drives the stirring antenna to rotate at the initial speed for a second duration. This process is repeated at least once more, dynamically determining the real-time speed of the stirring antenna based on the real-time reflected microwave energy within the cooking cavity, and controlling the adjustable speed motor to drive the stirring antenna to rotate at the real-time speed.

[0022] In one possible implementation, the real-time rotational speed is calculated based on the real-time reflected wave energy, including:

[0023] The initial reflected wave energy of microwaves within the cooking cavity is obtained. The initial reflected wave energy is measured within the cooking cavity after the microwave function of the microwave device is activated, without any object to be heated inside the cooking cavity.

[0024] The real-time rotational speed is calculated based on the real-time reflected wave energy and the initial reflected wave energy.

[0025] In one possible implementation, the real-time rotational speed of the stirring antenna is dynamically determined based on the real-time reflected microwave energy within the cooking cavity, and an adjustable-speed motor is controlled to drive the stirring antenna to rotate at the real-time rotational speed, including:

[0026] The initial reflected wave energy of microwaves inside the cooking cavity is obtained, and multiple reflected wave energy levels are divided according to the difference between the real-time reflected wave energy and the initial reflected wave energy inside the cooking cavity.

[0027] Based on the energy level of the reflected wave, the preset mapping relationship between the energy level and the rotation speed of the stirring antenna is queried, the real-time rotation speed of the stirring antenna is determined, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotation speed.

[0028] In one possible implementation, the real-time rotational speed of the stirring antenna is dynamically determined based on the real-time reflected microwave energy within the cooking cavity, and an adjustable-speed motor is controlled to drive the stirring antenna to rotate at the real-time rotational speed, including:

[0029] The initial reflected wave energy of microwaves inside the cooking cavity is obtained, and the cooking cavity is divided into multiple sub-regions based on the difference between the real-time reflected wave energy and the initial reflected wave energy.

[0030] Calculate the mean energy difference of reflected waves in each sub-region;

[0031] Based on the proportional relationship of the average difference in reflected wave energy in each sub-region, the dwell time of the stirring antenna in each sub-region is determined; the proportional relationship between the average differences in reflected wave energy is inversely proportional to the proportional relationship between the dwell times.

[0032] The initial rotational speed is used as the real-time rotational speed. Based on the dwell time of the stirring antenna in each sub-region, the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotational speed.

[0033] Thirdly, embodiments of this application provide a controller, including: a memory and a processor;

[0034] The memory stores instructions that the computer executes;

[0035] The processor executes computer execution instructions stored in the memory, causing the processor to perform the aforementioned microwave device control method.

[0036] The microwave device control method, microwave device, and controller provided in this application include a cooking cavity, a microwave conduction component, a waveguide coupler, and a stirring antenna. The microwave conduction component includes a magnetron and a waveguide. After the microwave device starts working, microwaves are generated by the magnetron and guided into the cooking cavity through the waveguide. The stirring antenna is then controlled to rotate and adjust the distribution of microwaves within the cooking cavity. Simultaneously, the reflected wave energy of microwaves within the cooking cavity can be detected by the waveguide coupler. Based on the real-time reflected wave energy of microwaves within the cooking cavity, the rotation speed of the stirring antenna can be dynamically controlled, changing the position of cold and hot zones within the cooking cavity and effectively improving the heating efficiency of the microwave device.

[0037] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the microwave equipment, microwave equipment control method, and controller provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0039] Figure 1 This is a schematic diagram of the structure of a microwave device provided in an embodiment of this application;

[0040] Figure 2 A flowchart illustrating the microwave device control method provided in the embodiments of this application. Figure 1 ;

[0041] Figure 3 A flowchart illustrating the microwave device control method provided in the embodiments of this application. Figure 2 ;

[0042] Figure 4 A trend diagram of reflected wave energy variation provided in an embodiment of this application;

[0043] Figure 5 A flowchart illustrating the microwave device control method provided in the embodiments of this application. Figure 3 ;

[0044] Figure 6 A flowchart illustrating the microwave device control method provided in the embodiments of this application. Figure 4 .

[0045] Figure label:

[0046] 100 - Cooking cavity;

[0047] 200 - Microwave conduction assembly; 201 - Magnetron; 202 - Waveguide;

[0048] 300-waveguide coupler;

[0049] 400-Stirring Antenna;

[0050] 500-Adjustable speed motor.

[0051] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0056] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0057] In related technologies, microwave devices (such as microwave ovens) form cold and hot zones in different locations within the cavity during operation, and these zones are fixed in position, affecting heating efficiency. Although a rotating turntable can be added to the microwave device to allow food to rotate within the cavity, this method still cannot change the problem of the fixed positions of the cold and hot zones within the microwave device cavity, and therefore cannot effectively improve heating efficiency.

[0058] Therefore, embodiments of this application provide a microwave device, a microwave device control method, and a controller. The microwave device includes a cooking cavity, a microwave conduction component, a waveguide coupler, and a stirring antenna. The microwave conduction component includes a magnetron and a waveguide. After the microwave device starts working, microwaves are generated by the magnetron and guided into the cooking cavity through the waveguide. The stirring antenna is then controlled to rotate, adjusting the microwave distribution within the cooking cavity. Simultaneously, the reflected wave energy of the microwaves within the cooking cavity can be detected by the waveguide coupler. Based on the real-time reflected wave energy of the microwaves within the cooking cavity, the rotation speed of the stirring antenna can be dynamically controlled, changing the positions of the cold and hot zones within the cooking cavity and effectively improving the heating efficiency of the microwave device.

[0059] The following combination Figures 1 to 6 The specific implementation methods of the microwave equipment, microwave equipment control method and controller provided in the embodiments of this application will be described in detail.

[0060] Reference Figure 1 As shown, the microwave device in this embodiment may include: a cooking cavity 100, a microwave conduction assembly 200, a waveguide coupler 300, and a stirring antenna 400. Specifically:

[0061] The microwave conduction assembly 200 includes a magnetron 201 and a waveguide 202. The magnetron 201 is configured to generate microwaves. The waveguide 202 connects the magnetron 201 and the cooking cavity 100 and is configured to guide the microwaves generated by the magnetron 201 into the cooking cavity 100.

[0062] Waveguide coupler 300 is disposed within microwave conduction assembly 200 and is configured to detect reflected wave energy of microwaves within cooking cavity 100.

[0063] A stirring antenna 400 is disposed on the cavity wall at the bottom of the cooking cavity 100. The stirring antenna 400 is configured to adjust the distribution of microwaves within the cooking cavity 100 by rotation.

[0064] The cooking cavity 100 is an enclosed space for placing food for heating. The microwave conduction assembly 200 primarily functions to generate and introduce microwaves, and can be composed of a microwave generating device and a microwave conduction device. A waveguide coupler 300 can be installed within the microwave conduction device of the microwave conduction assembly 200, and can be used to detect microwave energy reflected within the cooking cavity 100. The stirring antenna 400 can change the direction of microwave radiation by rotating, resulting in a more uniform distribution of microwaves within the cooking cavity 100. The microwave device may also include a controller (…). Figure 1 (not shown in the image) to respond to user-triggered control commands and control the operation of various devices within the microwave equipment according to the control commands.

[0065] The magnetron 201 primarily utilizes the combined effect of electric and magnetic fields to excite and maintain high-frequency electromagnetic oscillations, ultimately generating microwaves. The waveguide 202 is a metal pipe; its walls form a perfect electromagnetic shield, efficiently and directionally transmitting the microwave energy generated by the magnetron 201 to the cooking cavity 100. The dimensions of the waveguide 202 can be set according to the wavelength of the microwaves generated by the magnetron 201 to ensure efficient and low-loss microwave energy transmission. A waveguide coupler 300 can be disposed inside the waveguide 202. The waveguide coupler 300 can selectively couple out reflected waves, which are then converted into measurable DC or low-frequency signals by a microwave detector (such as a diode), thereby determining the reflected wave energy.

[0066] For example, the workflow and interaction of the microwave device can be as follows: After the user triggers the microwave function start command, the controller in the microwave device can respond to the microwave function start command, control the magnetron 201 to generate microwaves according to the heating temperature indicated by the microwave function start command, and guide the generated microwaves into the cooking cavity 100 through the waveguide 202. Simultaneously, the controller can control the stirring antenna 400 to rotate at an initial speed to adjust the distribution of microwaves within the cooking cavity 100, and control the waveguide coupler 300 to detect the reflected wave energy of microwaves within the cooking cavity 100. Furthermore, considering that the food within the cooking cavity 100 absorbs energy, causing changes in the reflected wave energy of microwaves within the cooking cavity 100, the controller can dynamically determine the real-time rotation speed of the stirring antenna 400 based on the real-time reflected wave energy of microwaves within the cooking cavity 100 during the rotation of the stirring antenna 400, and control the stirring antenna 400 to rotate at the real-time speed. This allows for flexible switching between cold and hot zones within the cooking cavity 100 during the operation of the microwave device, improving heating efficiency.

[0067] For example, the controller in the microwave device can respond to a microwave function start command, control the magnetron 201 to generate microwaves according to the heating temperature indicated by the microwave function start command, and guide the generated microwaves into the cooking cavity 100 through the waveguide 202. Based on this, the microwave conduction assembly 200 composed of the magnetron 201 and the waveguide 202 can guide microwaves into the cooking cavity 100 with low loss, thereby improving heating efficiency.

[0068] Reference Figure 1 As shown, in one possible implementation, the microwave device further includes:

[0069] An adjustable speed motor 500 is connected to a stirring antenna 400 and is configured to drive the stirring antenna 400 to rotate.

[0070] Among them, the adjustable speed motor 500 can adjust the speed of the stirring antenna 400 according to different cooking needs (such as defrosting, heating, and grilling combinations).

[0071] Specifically, the controller in the microwave device can drive the stirring antenna 400 to rotate at the required speed by controlling the operation of the adjustable speed motor 500, so as to adjust the distribution of microwaves in the cooking cavity 100 by rotating the stirring antenna 400.

[0072] For example, the adjustable speed motor 500 can be connected to the stirring antenna 400 via a coupling, or it can be rigidly connected or connected via gear transmission. This embodiment does not limit this, as long as the adjustable speed motor 500 can drive the stirring antenna 400 to rotate together.

[0073] In this embodiment, the stirring antenna 400 can rotate under the drive of the adjustable speed motor 500 to change the distribution of microwaves in the cooking cavity 100.

[0074] In one possible implementation, the microwave device also includes:

[0075] Antenna position detection device ( Figure 1 (Not shown in the image), the antenna position detection device is configured to detect the position of the stirring antenna 400.

[0076] Optionally, the antenna position detection device can consist of a Hall sensor and a magnet. The magnet is fixed to the rotation axis of the stirring antenna 400, either embedded in the shaft end or fixed to a component that rotates synchronously with the shaft. The Hall sensor is fixed to a stationary structure (such as the mounting bracket for the adjustable speed motor 500 or the bottom of the cooking cavity 100) and precisely aligned with the rotation path of the magnet. As the stirring antenna 400 rotates, the magnet rotates accordingly. Each time the magnet passes the Hall sensor, the sensor detects a peak in magnetic field strength and outputs a pulse electrical signal. The controller can determine how many revolutions the stirring antenna 400 has made by calculating the number of these pulses. Furthermore, the precise position of the stirring antenna 400 can be determined by placing multiple magnets at different angles.

[0077] In this embodiment, the position of the stirring antenna 400 during rotation can be accurately determined by the antenna position detection device. The rotation angle or position of the stirring antenna 400 can be detected in real time and combined with the reflected wave energy data to achieve more precise intelligent control of the microwave equipment.

[0078] Based on the above embodiments, this application provides a microwave device control method that can be applied to, for example... Figure 1The microwave device shown includes: a cooking cavity 100, a microwave conduction assembly 200, a waveguide coupler 300, a stirring antenna 400, a variable speed motor 500, an antenna position detection device, and a controller. Specifically, the microwave conduction assembly 200 includes: a magnetron 201 configured to generate microwaves; and a waveguide 202 connecting the magnetron 201 and the cooking cavity 100, configured to guide the microwaves generated by the magnetron 201 into the cooking cavity 100. The waveguide coupler 300 is disposed within the waveguide 202 and configured to detect the reflected wave energy of microwaves within the cooking cavity 100. The stirring antenna 400 is disposed on the cavity wall at the bottom of the cooking cavity 100 and configured to adjust the distribution of microwaves within the cooking cavity 100 by rotation. An adjustable-speed motor 500 is connected to a stirring antenna 400, and the adjustable-speed motor 500 is configured to drive the stirring antenna 400 to rotate. An antenna position detection device is configured to detect the position of the stirring antenna 400. A controller is configured to control the operation of the magnetron 201, waveguide 202, waveguide coupler 300, adjustable-speed motor 500, and antenna position detection device via electrical connections.

[0079] Reference Figure 2 As shown, the specific microwave equipment control methods include:

[0080] Step 201: Upon receiving the microwave function start command, control the microwave conduction component 200 to introduce the generated microwaves into the cooking cavity 100 of the microwave device, and control the adjustable speed motor 500 to drive the stirring antenna 400 to rotate at the initial speed starting from the antenna starting position.

[0081] The stirring antenna 400 is disposed on the cavity wall at the bottom of the cooking cavity 100 and is used to adjust the distribution of microwaves within the cooking cavity 100.

[0082] Specifically, when the controller receives a microwave function start command triggered by the user via the control panel or remote control, the controller can control the magnetron 201 to generate microwaves, guide the generated microwaves into the cooking cavity 100 of the microwave equipment through the waveguide 202, and control the adjustable speed motor 500 to rotate, thereby driving the stirring antenna 400 to rotate at an initial speed from the antenna's starting position. The initial speed can be flexibly configured according to the needs of the actual application scenario.

[0083] Step 202: During the rotation of the stirring antenna 400, the real-time rotation speed of the stirring antenna 400 is dynamically determined based on the real-time reflected wave energy of the microwaves 100 inside the cooking cavity, and the adjustable speed motor 500 is controlled to drive the stirring antenna 400 to rotate at the real-time rotation speed.

[0084] Specifically, during the rotation of the stirring antenna 400, the controller can detect the real-time reflected wave energy of microwaves in the cooking cavity 100 through the waveguide coupler 300. Based on the real-time reflected wave energy of microwaves in the cooking cavity 100, the controller calculates the real-time rotation speed of the stirring antenna 400. Then, based on the dynamically determined real-time rotation speed of the stirring antenna 400, the controller controls the adjustable speed motor 500 to drive the stirring antenna 400 to rotate at the real-time rotation speed.

[0085] In one possible implementation, Figure 2 On the basis of, such as Figure 3 As shown, after performing step 201, step 202 may include the following process:

[0086] If the stirring antenna 400 is not detected to have rotated to the antenna starting position during the rotation process, the position of the stirring antenna 400 will continue to be detected.

[0087] When the stirring antenna 400 is detected to have rotated to the antenna starting position, step 301 is executed to detect the reflected wave energy of microwaves in the cooking cavity 100 and obtain the real-time reflected wave energy.

[0088] Further execute step 302, calculate the real-time rotation speed based on the real-time reflected wave energy, and control the adjustable speed motor 500 to drive the stirring antenna 400 to rotate continuously at the real-time rotation speed for a first duration;

[0089] If the first duration is not reached, continue to execute step 302. After the rotation lasts for the first duration, execute step 303 to control the adjustable speed motor 500 to drive the stirring antenna 400 to rotate at the initial speed for the second duration.

[0090] Finally, repeat steps 301 to 303 at least once until the preset number of repetitions is reached, then execute step 304 to stop the operation.

[0091] For example, taking the repetition of steps 301 to 303 above for one round as an example, the microwave equipment control method may specifically include the following process:

[0092] Upon receiving a microwave function activation command, the controller controls the magnetron 201 to generate microwaves, which are then introduced into the cooking cavity 100 via the waveguide 202. The controller also controls the adjustable-speed motor 500 to drive the stirring antenna 400 to rotate at an initial speed ω0 from its initial antenna position. When the antenna position detection device detects that the stirring antenna 400 has rotated to its initial position, the controller controls the waveguide coupler 300 to detect the reflected microwave energy within the cooking cavity 100, obtaining the real-time reflected energy E_ref(θ). Based on the real-time reflected energy E_ref(θ), the controller calculates the real-time speed ω1 and controls the stirring antenna 400 to rotate at the real-time speed ω1 for a first duration T1. If the first duration T1 is not reached, the controller controls the adjustable-speed motor 500 to continue driving the stirring antenna 400 to rotate at the real-time speed ω1. After the first duration T1 of rotation ends, the controller controls the adjustable-speed motor 500 to drive the stirring antenna 400 to rotate at the initial speed ω0 for a second duration T2.

[0093] Considering that during the cooking process, as food begins to heat up and cook, the internal moisture of the food is converted into water vapor, and the number of polar molecules decreases, which affects the microwave absorption rate and reflected wave energy within the cooking cavity 100, the scanning strategy needs to be adjusted in a timely manner to avoid excessive water loss and overcooking in a certain area. Based on this, the controller can detect the new real-time reflected wave energy E_ref(θ) through the waveguide coupler 300 when the antenna position detection device detects that the stirring antenna 400 has rotated back to its initial position at the initial speed ω0. Then, it calculates the real-time speed ω2 based on the real-time reflected wave energy E_ref(θ) and controls the adjustable speed motor 500 to drive the stirring antenna 400 to rotate continuously at the real-time speed ω2 for a first duration T1. If the first duration T1 has not been reached, the controller controls the adjustable speed motor 500 to continue driving the stirring antenna 400 to rotate at the real-time speed ω2. After the rotation continues for the first duration T1, the controller controls the adjustable speed motor 500 to drive the stirring antenna 400 to rotate continuously at the initial speed ω0 for a second duration T2. After the first duration T2 of rotation ends, the controller controls the magnetron 201 to stop generating microwaves, the waveguide 202 to stop conducting microwaves, the adjustable speed motor 500 to stop rotating, and the antenna position detection device to stop detecting. In other words, the controller controls the microwave equipment to stop operating.

[0094] Where T1 and T2 are both integer multiples of the time ΔT required to rotate one revolution at the initial rotational speed ω0, and both T1 and T2 are at least 1 times ΔT, where ΔT = 2π / ω0. The reflected wave energy of microwaves within the cooking cavity 100 is related to the material, dimensions, and other parameters of the cooking cavity 100, and the parameters are consistent for microwave equipment of the same model after the design is completed.

[0095] In this embodiment, a variable speed motor 500 can be used to drive the stirring antenna 400 to rotate, thereby adjusting the distribution of the electromagnetic field within the cooking cavity 100. Furthermore, the rotational speed of the stirring antenna 400 can be dynamically adjusted by detecting the reflected microwave energy within the cooking cavity 100 through the waveguide coupler 300, thereby optimizing heating efficiency.

[0096] In one possible implementation, step 302, which calculates the real-time rotational speed based on the real-time reflected wave energy, includes: obtaining the initial reflected wave energy of microwaves within the cooking cavity 100; and calculating the real-time rotational speed based on the real-time reflected wave energy and the initial reflected wave energy.

[0097] The initial reflected wave energy is measured by the controller through the waveguide coupler 300 within the cooking cavity 100 after the microwave function of the microwave device is activated, without any object to be heated inside the cooking cavity 100.

[0098] Optionally, obtaining the initial reflected wave energy η(θ) of microwaves within the cooking cavity 100 includes the following process: When the cooking cavity 100 is in an empty state (no object to be heated is placed inside), the controller controls the magnetron 201 to generate microwaves, which are then introduced into the cooking cavity 100 through the waveguide 202. The controller also controls the adjustable speed motor 500 to drive the stirring antenna 400 to rotate at an initial speed ω0 from its initial position. During one revolution of the stirring antenna 400 from its initial position, the controller can control the waveguide coupler 300 to detect the reflected wave energy of microwaves within the cooking cavity 100, thus obtaining the initial reflected wave energy η(θ). Here, θ is the rotation angle of the stirring antenna 400.

[0099] Optionally, the real-time rotational speed ω1 can be calculated based on the real-time reflected wave energy E_ref(θ) and the initial reflected wave energy η(θ), as shown in formula (1):

[0100] (1)

[0101] Wherein, ω0 is the initial rotational speed, which can be flexibly set according to actual needs. The initial reflected wave energy, This refers to the energy of the reflected wave in real time. For example... Figure 4 As shown, taking the time ΔT it takes for the stirring antenna to rotate one revolution as an example, a trend graph of the reflected wave energy of microwaves within the microwave equipment within a unit ΔT is provided. This trend graph can reflect... The trend of the difference between them It is the minimum difference between the initial reflected wave energy η(θ) and the real-time reflected wave energy E_ref(θ) when the stirring antenna 400 is rotated to a certain angle. It is the maximum value of the difference between the initial reflected wave energy η(θ) and the real-time reflected wave energy E_ref(θ) when the stirring antenna 400 rotates to a certain angle.

[0102] In this embodiment, the real-time rotational speed ω1 can be calculated based on the initial rotational speed ω0 and the difference between the real-time reflected wave energy E_ref(θ) and the initial reflected wave energy η(θ) of the microwave in the cooking cavity 100.

[0103] In one possible implementation, Figure 2 On the basis of, such as Figure 5 As shown, after performing step 201, step 202 may further include the following process:

[0104] Step 501: Obtain the initial reflected wave energy of microwaves in the cooking cavity 100, and divide the reflected wave energy into multiple levels based on the difference between the real-time reflected wave energy and the initial reflected wave energy in the cooking cavity 100.

[0105] Specifically, the controller can measure and record the initial reflected wave energy η(θ) of the microwaves inside the cooking cavity 100 through a pre-test process. During the initial rotation of the stirring antenna 400 by the adjustable speed motor 500 at an initial speed ω0, the controller can detect the reflected wave energy of the microwaves inside the cooking cavity 100 through the waveguide coupler 300, obtaining the real-time reflected wave energy E_ref(θ). Based on the difference η(θ) - E_ref(θ) between the real-time reflected wave energy E_ref(θ) and the initial reflected wave energy η(θ), the controller divides the energy into multiple reflected wave levels within the range of the maximum and minimum differences: max[η(θ) - E_ref(θ)] ~ min[η(θ) - E_ref(θ)]. Furthermore, a preset mapping relationship can be established between each reflected wave energy level and the rotational speed of the stirring antenna 400, such as the first level corresponding to rotational speed ω1, the second level corresponding to rotational speed ω2, the third level corresponding to rotational speed ω3, etc., to reduce rotational speed changes and increase the reliability of the adjustable speed motor 500.

[0106] Step 502: According to the reflected wave energy level to which the real-time reflected wave energy belongs, query the preset mapping relationship between the reflected wave energy level and the rotation speed of the stirring antenna 400, determine the real-time rotation speed of the stirring antenna 400, and control the adjustable speed motor 500 to drive the stirring antenna 400 to rotate at the real-time rotation speed.

[0107] Specifically, the controller can determine the real-time rotational speed of the stirring antenna 400 by querying the preset mapping relationship between the real-time reflected wave energy level E_ref(θ) and the rotational speed of the stirring antenna 400, based on the reflected wave energy level E_ref(θ). It then controls the adjustable-speed motor 500 to drive the stirring antenna 400 to rotate at the real-time rotational speed. It should be noted that during the process of controlling the adjustable-speed motor 500 to drive the stirring antenna 400 to rotate at the real-time rotational speed, the controller needs to re-detect the real-time reflected wave energy E_ref(θ) and, based on the reflected wave energy level E_ref(θ), query the preset mapping relationship between the reflected wave energy level E_ref(θ) and the rotational speed of the stirring antenna 400 to determine the latest real-time rotational speed of the stirring antenna 400. The controller then controls the adjustable-speed motor 500 to drive the stirring antenna 400 to rotate at the latest real-time rotational speed until the required running time is reached, at which point operation stops, and heating ends.

[0108] In this embodiment, by using a preset mapping relationship between the reflected wave energy level and the rotational speed of the stirring antenna 400, the rotational speed of the stirring antenna 400 can be reduced during dynamic adjustment, thereby increasing the reliability of the adjustable speed motor 500.

[0109] In one possible implementation, Figure 2 On the basis of, such as Figure 6 As shown, after performing step 201, step 202 may further include the following process:

[0110] Step 601: Obtain the initial reflected wave energy of microwaves in the cooking cavity 100, and divide the cooking cavity 100 into multiple sub-regions based on the difference between the real-time reflected wave energy and the initial reflected wave energy of microwaves in the cooking cavity 100.

[0111] Specifically, the controller can measure and record the initial reflected wave energy η(θ) of the microwaves inside the cooking cavity 100 through a pre-testing process. During the initial rotation of the adjustable speed motor 500 to drive the stirring antenna 400 at an initial speed ω0, the controller can divide the cooking cavity 100 into multiple sub-regions based on the difference between the real-time reflected wave energy E_ref(θ) and the initial reflected wave energy η(θ) of the microwaves inside the cooking cavity 100.

[0112] For example, the 2π angle of one rotation can be divided into at least three sub-regions, or it can be divided into 4 sub-regions, 8 sub-regions, etc.

[0113] Step 602: Calculate the average value of the reflected wave energy difference for each sub-region.

[0114] For example, taking the division into three sub-regions (first sub-region, second sub-region, and third sub-region), the controller can calculate the average difference in reflected wave energy for each sub-region. For instance, for the first sub-region (where the rotation angle θ of the stirring antenna 400 is 0°-120°), the average difference in reflected wave energy is average[η(θ)-E_ref(θ)]1; for the second sub-region (where the rotation angle θ of the stirring antenna 400 is 120°-240°), the average difference in reflected wave energy is average[η(θ)-E_ref(θ)]2; and for the third sub-region (where the rotation angle θ of the stirring antenna 400 is 240°-360°), the average difference in reflected wave energy is average[η(θ)-E_ref(θ)]3.

[0115] Step 603: Based on the proportional relationship of the average difference of reflected wave energy in each sub-region, determine the dwell time of the stirring antenna 400 in each sub-region.

[0116] The stirring antenna 400 stays in each sub-region for at least 5 seconds.

[0117] Optionally, the controller can divide the stirring antenna 400 according to the time ΔT of one rotation of the initial rotation speed ω0, based on the inverse proportionality of the average difference of reflected wave energy in each sub-region, to determine the dwell time of the stirring antenna 400 in each sub-region. The proportional relationship between the average differences of reflected wave energy is inversely proportional to the proportional relationship between the dwell times, and the sum of the dwell times of the stirring antenna 400 in each sub-region equals ΔT.

[0118] Specifically, taking the division into three sub-regions (first sub-region, second sub-region, and third sub-region) as an example, the controller can calculate the proportional relationship of the average difference of reflected wave energy in each sub-region, obtaining average[η(θ)-E_ref(θ)]1: average[η(θ)-E_ref(θ)]2: average[η(θ)-E_ref(θ)]3=X:Y:Z. Furthermore, the controller can divide the time ΔT for one revolution at the initial rotational speed ω0 according to the inverse ratio of Z:Y:X, obtaining t1, t2, and t3, such that t1:t2:t3=Z:Y:X, and t1+t2+t3=ΔT. Here, t1 is the dwell time in the first sub-region during one revolution of the stirring antenna 400, t2 is the dwell time in the second sub-region during one revolution of the stirring antenna 400, and t3 is the dwell time in the third sub-region during one revolution of the stirring antenna 400.

[0119] Step 604: Using the initial rotational speed as the real-time rotational speed, and based on the dwell time of the stirring antenna 400 in each sub-region, control the adjustable speed motor 500 to drive the stirring antenna 400 to rotate at the real-time rotational speed.

[0120] Specifically, the controller can use the initial rotational speed ω0 as the real-time rotational speed. When the stirring antenna 400 rotates to the center position of the first sub-region, the controller controls the adjustable speed motor 500 to stop rotating, causing the stirring antenna 400 to remain at the center position of the first sub-region for a duration of t1. After the duration of t1 is reached, the controller controls the adjustable speed motor 500 to drive the stirring antenna 400 to continue rotating at the initial rotational speed ω0. When the stirring antenna 400 rotates to the center position of the second sub-region, the controller controls the adjustable speed motor 500 to stop rotating, causing the stirring antenna 400 to remain at the center position of the second sub-region. The stirring antenna 400 is kept in a stationary position for a duration of t2. After the stationary position reaches t2, the adjustable speed motor 500 is controlled to drive the stirring antenna 400 to continue rotating at the initial speed ω0. When the stirring antenna 400 rotates to the center position of the third sub-region, the adjustable speed motor 500 is controlled to stop rotating, so that the stirring antenna 400 stays at the center position of the third sub-region for a duration of t3. After the stationary position reaches t3, the adjustable speed motor 500 is controlled to drive the stirring antenna 400 to continue rotating at the initial speed ω0. The above process is repeated until the required running time is reached, at which point the operation stops and the heating ends.

[0121] In this embodiment, the adjustable speed motor 500 can be used to drive the stirring antenna 400 to rotate, thereby changing the distribution of microwaves in the cooking cavity 100. Then, the waveguide coupler 300 detects the reflected wave energy of microwaves in the cooking cavity 100. The rotation speed is reduced in sub-regions with high microwave absorption and increased in sub-regions with low microwave absorption, thereby achieving directional heating of different regions within the microwave and improving the heating efficiency of the microwave equipment.

[0122] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0123] This application also provides a controller, including: a memory and a processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, causing the processor to perform the above-described microwave device control method.

[0124] It should be noted that the division of units in this application is merely a logical functional division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0126] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0127] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0128] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0129] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A microwave equipment control method, using microwave equipment, characterized in that, include: Upon receiving a microwave function activation command, the microwave conduction component is controlled to guide the generated microwaves into the cooking cavity of the microwave device, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at an initial speed starting from the antenna's starting position; the stirring antenna is disposed on the cavity wall at the bottom of the cooking cavity and is used to adjust the distribution of microwaves within the cooking cavity; During the rotation of the stirring antenna, the real-time rotation speed of the stirring antenna is dynamically determined based on the real-time reflected wave energy of the microwaves inside the cooking cavity, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotation speed. The step of dynamically determining the real-time rotational speed of the stirring antenna based on the real-time reflected wave energy of microwaves within the cooking cavity, and controlling the adjustable-speed motor to drive the stirring antenna to rotate at the real-time rotational speed, includes: When the stirring antenna is detected to have rotated to the antenna's starting position, the reflected wave energy of microwaves inside the cooking cavity is detected to obtain the real-time reflected wave energy. Calculate the real-time rotation speed based on the real-time reflected wave energy, and control the adjustable speed motor to drive the stirring antenna to rotate at the real-time rotation speed for a first duration. After the first duration of rotation ends, the adjustable speed motor is controlled to drive the stirring antenna to rotate at the initial speed for a second duration. This process is repeated at least once more, dynamically determining the real-time speed of the stirring antenna based on the real-time reflected wave energy of the microwaves inside the cooking cavity, and controlling the adjustable speed motor to drive the stirring antenna to rotate at the real-time speed.

2. The method according to claim 1, characterized in that, The calculation of real-time rotational speed based on the real-time reflected wave energy includes: The initial reflected wave energy of microwaves within the cooking cavity is obtained; the initial reflected wave energy is measured within the cooking cavity after the microwave function of the microwave device is activated, without any object to be heated being placed inside the cooking cavity. The real-time rotational speed is calculated based on the real-time reflected wave energy and the initial reflected wave energy.

3. The method according to claim 1, characterized in that, The step of dynamically determining the real-time rotational speed of the stirring antenna based on the real-time reflected wave energy of microwaves within the cooking cavity, and controlling the adjustable-speed motor to drive the stirring antenna to rotate at the real-time rotational speed, includes: The initial reflected wave energy of microwaves in the cooking cavity is obtained, and multiple reflected wave energy levels are divided according to the difference between the real-time reflected wave energy of microwaves in the cooking cavity and the initial reflected wave energy. According to the reflected wave energy level to which the real-time reflected wave energy belongs, the preset mapping relationship between the reflected wave energy level and the rotation speed of the stirring antenna is queried to determine the real-time rotation speed of the stirring antenna, and the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotation speed.

4. The method according to claim 1, characterized in that, The step of dynamically determining the real-time rotational speed of the stirring antenna based on the real-time reflected wave energy of microwaves within the cooking cavity, and controlling the adjustable-speed motor to drive the stirring antenna to rotate at the real-time rotational speed, includes: The initial reflected wave energy of microwaves within the cooking cavity is obtained, and the cooking cavity is divided into multiple sub-regions based on the difference between the real-time reflected wave energy of microwaves within the cooking cavity and the initial reflected wave energy. Calculate the mean value of the reflected wave energy difference for each of the sub-regions; The dwell time of the stirring antenna in each sub-region is determined based on the proportional relationship of the average difference in reflected wave energy in each sub-region; the proportional relationship between the average differences in reflected wave energy in each sub-region is inversely proportional to the proportional relationship between the dwell times in each sub-region. Using the initial rotational speed as the real-time rotational speed, and based on the dwell time of the stirring antenna in each of the sub-regions, the adjustable speed motor is controlled to drive the stirring antenna to rotate at the real-time rotational speed.

5. A microwave device, characterized in that, The microwave device, using the method described in any one of claims 1-4, comprises: Cooking cavity; A microwave conduction assembly, comprising a magnetron and a waveguide; the magnetron is configured to generate microwaves; the waveguide connects the magnetron to the cooking cavity and is configured to guide the microwaves generated by the magnetron into the cooking cavity; A waveguide coupler disposed within the microwave conduction assembly, the waveguide coupler being configured to detect the reflected energy of microwaves within the cooking cavity; A stirring antenna is disposed on the cavity wall at the bottom of the cooking cavity, and the stirring antenna is configured to adjust the distribution of microwaves within the cooking cavity by rotation.

6. The microwave device according to claim 5, characterized in that, Also includes: An adjustable speed motor is connected to the stirring antenna and is configured to drive the stirring antenna to rotate.

7. The microwave device according to claim 6, characterized in that, The adjustable speed motor is rigidly connected to or driven by the stirring antenna.

8. The microwave device according to claim 5, characterized in that, Also includes: An antenna position detection device configured to detect the position of the stirring antenna.

9. A controller, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1-4.

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