CN119545592A - Microwave cooking appliance and control method thereof - Google Patents

Abstract

The present invention discloses a microwave cooking appliance and a control method for the microwave cooking appliance. The microwave cooking appliance comprises: a cavity, the cavity comprises a side plate; a magnetron, the magnetron is mounted on the outer wall of the side plate; a first motor, the first motor is mounted on the outer wall of the side plate, the first motor is connected to a conductive member; a waveguide, the waveguide is mounted on the outer wall of the side plate, the waveguide is connected to the magnetron, and the waveguide is provided with a microwave output port connected to the interior of the cavity; the first motor is used to drive the conductive member to move relative to the waveguide to adjust the length of the conductive member extending into the waveguide. In the above-mentioned microwave cooking appliance, the first motor is used to drive the conductive member to move relative to the waveguide to adjust the length of the conductive member extending into the waveguide, and then the microwave input into the cavity by the magnetron can be disturbed back and forth, thereby improving the uniformity of microwave heating, and can replace the original complex antenna stirring system structure, simplifying the structure and making the assembly relatively simple.

Description

Microwave cooking appliance and control method thereof

Technical Field

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

Background

In the related art, a microwave oven includes a stirrer motor and an antenna connected to an output shaft of the stirrer motor. The microwave generated by the magnetron is transmitted into the cavity, and the stirring motor drives the antenna to continuously rotate and stir the microwave, so that the food is heated uniformly. However, the existing antenna stirring system is complex in structure, more in parts and complex in assembly.

Disclosure of Invention

The embodiment of the invention provides a microwave cooking appliance and a control method of the microwave cooking appliance, which aim to solve at least one technical problem.

The microwave cooking appliance of the embodiment of the invention comprises:

The cavity comprises a side plate;

a magnetron mounted on an outer wall of the side plate;

The first motor is arranged on the outer wall of the side plate and is connected with a conductive piece;

The waveguide tube is arranged on the outer wall of the side plate and connected with the magnetron, and a microwave output port communicated with the inside of the cavity is formed in the waveguide tube;

The first motor is used for driving the conductive piece to move relative to the waveguide tube so as to adjust the length of the conductive piece extending into the waveguide tube.

In the microwave cooking appliance, the first motor is used for driving the conductive piece to move relative to the waveguide tube so as to adjust the length of the conductive piece extending into the waveguide tube, and then the microwave input into the cavity by the magnetron can be disturbed back and forth, so that the microwave heating uniformity is improved, the original complex antenna stirring system structure can be replaced, the structure is simplified, and the assembly is relatively simple.

In some embodiments, the magnetron includes an antenna cap positioned within the waveguide, a central axis of the antenna cap being parallel to a central axis of the conductive member.

In some embodiments, the distance between the central axis of the antenna cap and the central axis of the conductive member is λg/2+n×λg, n is a natural number, and λg is the wavelength of the microwave in the waveguide.

In some embodiments, the magnetron includes an antenna cap positioned within the waveguide, the conductive member being positioned between the microwave output port and the antenna cap in a direction in which microwaves within the waveguide are transmitted to the microwave output port with the conductive member extending into the waveguide.

In certain embodiments, the first motor is a linear motor.

In some embodiments, the conductive element positioned within the waveguide extends in a range of 10mm to 30mm.

In some embodiments, the side plate comprises a first plate and a second plate, the magnetron, the first motor and the waveguide are mounted on the outer wall of the first plate, the microwave cooking appliance further comprises a second motor and a rotary table, the rotary table is located in the cavity, the second motor is mounted on the outer wall of the second plate, and an output shaft of the second motor is connected with the rotary table and is used for driving the rotary table to rotate.

In certain embodiments, the conductive member is cylindrical, spherical-crown-shaped, or polygonal-prism-shaped in shape.

The control method of the microwave cooking appliance comprises the following steps:

Acquiring a cooking start instruction;

In response to the start cooking instruction, controlling a magnetron to generate microwaves and controlling a first motor to drive a conductive member to move relative to a waveguide tube to adjust the length of the conductive member extending into the waveguide tube, wherein the microwaves are fed into a cavity through the waveguide tube.

In the control method of the microwave cooking appliance, the first motor is used for driving the conductive piece to move relative to the waveguide tube so as to adjust the length of the conductive piece extending into the waveguide tube, and then microwaves input into the cavity by the magnetron can be disturbed back and forth, so that the microwave heating uniformity is improved, the original complex antenna stirring system structure can be replaced, the structure is simplified, and the assembly is relatively simple.

In some embodiments, the conductive element positioned within the waveguide extends in a range of 10mm to 30mm.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained from the structures shown in these drawings without the need for inventive effort to a person skilled in the art.

Fig. 1 to 3 are schematic views illustrating a partial structure of a microwave cooking appliance according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a conductive element versus microwave disturbance according to an embodiment of the present invention;

FIG. 5 is a schematic view of the telescopic range of the conductive member according to the embodiment of the present invention;

Fig. 6 to 8 are schematic views illustrating connection between a first motor and a conductive member according to an embodiment of the present invention;

fig. 9 is a sectional view of a microwave cooking appliance according to an embodiment of the present invention;

Fig. 10 is a flowchart illustrating a control method of a microwave cooking appliance according to an embodiment of the present invention;

Fig. 11 is a schematic block diagram of a microwave cooking appliance according to an embodiment of the present invention;

fig. 12 is a sectional view of a related art microwave oven.

Reference numerals illustrate:

the microwave cooking appliance 100, the cavity 12, the magnetron 14, the first motor 16, the waveguide 18, the conductive member 20, the microwave output 22, the U-shaped plate 24, the front plate 26, the rear plate 28, the left plate 30, the right plate 32, the bottom plate 34, the antenna cap 36, the first plate 38, the second plate 40, the second motor 42, the turntable 44, the controller 46, and the input assembly 48.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. It may be a mechanical connection that is made, or may be an electrical connection. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 12, in the related art microwave oven 300, microwaves generated by the oscillation of the magnetron 400 are transmitted to the antenna shaft through the waveguide 500, and then the stirring motor 600 drives the antenna 700 to rotate, thereby radiating the microwaves into the cavity to heat the food. During rotation of the antenna 700, the different angular positions of the antenna 700 change two parameters, standing wave ratio and phase, of the antenna 700, thereby perturbing the microwaves. However, this results in 1) a low overall volume ratio of the microwave oven 300, a large space at the bottom of the cavity occupied by the stirring motor 600 and the antenna system, and a low cabinet loading, and 2) a complicated structure of the microwave stirring system (motor 600, antenna 700, stirring support), a high cost, numerous parts, a long assembly time, and a difficulty in maintenance.

Referring to fig. 1 to 3, a microwave cooking appliance 100 according to an embodiment of the present invention includes a cavity 12, a magnetron 14, a first motor 16, and a waveguide 18. The cavity 12 includes side panels. The magnetron 14 is mounted on the outer wall of the side plate. The first motor 16 is mounted on the outer wall of the side plate, and the first motor 16 is connected with a conductive member 20. The waveguide 18 is arranged on the outer wall of the side plate, the waveguide 18 is connected with the magnetron 14, and the waveguide 18 is provided with a microwave output port 22 communicated with the inside of the cavity 12. The first motor 16 is used to drive the conductive element 20 relative to the waveguide 18 to adjust the length of the conductive element 20 extending into the waveguide 18.

In the above microwave cooking appliance 100, the first motor 16 is used for driving the conductive member 20 to move relative to the waveguide 18 to adjust the length of the conductive member 20 extending into the waveguide 18, so as to further disturb the microwave input into the cavity 12 by the magnetron 14 back and forth, thereby improving the uniformity of microwave heating, and replacing the original complex antenna stirring system structure, so that the structure is simplified and the assembly is relatively simple.

Specifically, the microwave cooking appliance 100 includes, but is not limited to, microwave ovens, micro-steaming and baking all-in-one machines, integrated cookers, and the like. In the illustrated embodiment, the microwave cooking appliance 100 is a microwave oven.

A cooking cavity is provided within the cavity 12 in which heated food may be placed. In one embodiment, the microwave oven may be a flat microwave oven, wherein the bottom of the cooking cavity of the flat microwave oven is flat, and the food may remain stationary during the heating process. The first motor 16 may drive the conductive member 20 to move relative to the waveguide 18 to adjust the length of the conductive member 20 extending into the waveguide 18, and thus may perturb the microwaves input into the cavity 12 by the magnetron 14, thereby improving microwave heating uniformity and uniformly heating the food even when the food is stationary.

In the embodiment of fig. 1, the side panels of the cavity 12 include a U-shaped panel 24, a front panel 26, a rear panel 28, and a top panel (not shown) that is mounted on top of the U-shaped panel 24, the front panel 26 and the rear panel 28 being connected to the front and rear sides of the U-shaped panel 24, respectively. The front plate 26 may be provided with an opening communicating with the cooking cavity, and the microwave cooking appliance 100 further includes a door body rotatably connected to the front plate 26 for opening and closing the opening.

The U-shaped plate 24 includes a left plate 30, a right plate 32, and a bottom plate 34, the bottom plate 34 connecting the left plate 30 and the right plate 32. The magnetron 14, the first motor 16 and the waveguide 18 are mounted to the outer wall of the base plate 34. The first motor 16 may be fixed to the base plate 34 by brackets and bolts, and the magnetron 14 and waveguide 18 may be fixed to the base plate 34 by bolts.

In the flat microwave oven of the related art, in order to prevent the antenna from rubbing the inner partition plate and the U-shaped plate to strike fire, the distance between the antenna or the stirring plate and the bottom plate of the U-shaped plate of the cavity and the inner partition plate is at least 10mm, so that the bottom profiling of the cavity is usually about 22 mm. According to the invention, the action of stirring microwaves is achieved by the axial extension and contraction of the conductive piece 20, the space of the bottom plate 34 of the U-shaped plate 24 can be compressed to 10mm, and the volume rate and the cabinet loading amount of the cavity 12 are improved.

It should be understood that the fixing manner of the first motor 16, the magnetron 14 and the waveguide 18 is not limited to the above manner, and the first motor 16, the magnetron 14 and the waveguide 18 are not limited to being mounted on the outer wall of the same side plate, which is not particularly limited in the present invention.

The magnetron 14 may include an antenna cap 36, the antenna cap 36 being positioned within the waveguide 18, and microwaves may radiate from the antenna cap 36 into the waveguide 18 when the magnetron 14 is in operation, the microwaves being transmitted along the waveguide 18 to the microwave output port 22 and into the cooking cavity via the microwave output port 22 to heat the food. When the magnetron 14 is in operation, the first motor 16 can drive the conductive member 20 to move so as to adjust the length of the conductive member 20 extending into the waveguide 18, i.e. the depth position of the conductive member 20 extending into the waveguide 18 changes, and at this time, the phase and standing-wave ratio parameters of the microwave output port 22 of the waveguide 18 change accordingly, so that the change of the microwave field intensity is generated, thereby achieving the effect similar to that of a stirring antenna and improving the uniformity of food heating.

The material of the conductive member 20 includes, but is not limited to, metal, or other conductive material, which is not specifically limited herein. In one embodiment, the conductive member 20 may be the output shaft of the first motor 16. In one embodiment, the conductive member 20 may be coupled to the output shaft of the first motor 16.

In one embodiment, the conductive member 20 is cylindrical, the waveguide 18 is provided with a cylindrical through hole, for example, the aperture of the through hole is 10mm, the conductive member 20 can be penetrated through the through hole and is in clearance fit with the through hole, and the gap between the conductive member 20 and the wall of the through hole can meet the requirement that the leakage prevention level or the leakage level is in a desired range.

The first motor 16 is operable to drive the conductive element 20 relative to the waveguide 18 to adjust the length of the conductive element 20 extending into the waveguide 18. That is, the conductive member 20 may be driven by the first motor 16 to perform a telescopic motion, so as to adjust the length of the conductive member 20 extending into the waveguide 18, so as to disturb the microwave.

In some embodiments, the magnetron 14 includes an antenna cap 36 positioned within the waveguide 18, with a central axis L1 of the antenna cap 36 parallel to a central axis L2 of the conductive member 20.

Thus, the positions of the magnetron 14 and the conductive member 20 are conveniently arranged, and the effect of the conductive member 20 disturbing microwaves is good.

Specifically, in one embodiment, the magnetron 14 and the waveguide 18 may be first mounted on the outer wall of the side plate, and then, by the arrangement that the central axis L1 of the antenna cap 36 is parallel to the central axis L2 of the conductive member 20, the position of the conductive member 20 may be rapidly positioned, so that the installation of the conductive member 20 is facilitated, and the installation of the first motor 16 is also facilitated.

In one embodiment, the conductive member 20, the first motor 16 and the waveguide 18 may be mounted on the outer wall of the side plate, and then the position of the magnetron 14 may be rapidly positioned by the arrangement that the central axis L1 of the antenna cap 36 is parallel to the central axis L2 of the conductive member 20, so that the magnetron 14 is mounted.

Referring to fig. 4, microwaves generated by the magnetron 14 are radiated into the waveguide 18 through the antenna cap 36, the transmission direction of the microwaves is basically perpendicular to the central axis L1 of the antenna cap 36, and the central axis L2 of the conductive member 20 is parallel to the central axis L1 of the antenna cap 36, so that when the conductive member 20 performs telescopic movement, the length variation of the conductive member 20 in the waveguide 18 is utilized to the greatest extent to disturb the microwaves, and the disturbing effect is good.

In some embodiments, the distance D between the central axis of the antenna cap 36 and the central axis of the conductive member 20 is λg/2+n λg, n being a natural number, λg being the wavelength of the microwaves within the waveguide 18.

Thus, the disturbance effect of the conductive member 20 to microwaves can be enhanced.

Specifically, the magnetron 14 generates microwaves that are transmitted forward through the waveguide 18, with alternating peaks and valleys at different locations, and with total reflection effects occurring at the boundary of the conductive member 20 during transmission. When the conductive member 20 (e.g., a metal cylindrical pin) is inserted, the microwaves encounter the conductive member 20 to generate phase shifts and standing wave ratio changes. When the insertion position of the conductive element 20, that is, the central axis of the conductive element 20 is separated from the central axis of the antenna cap 36 by λg/2+n×λg, the disturbance effect of the conductive element 20 on standing waves and phases is greatest, and the disturbance effect is better because the conductive element 20 is located at the peak or the trough and the electric field component is changed the greatest. n is a natural number, n=0, 1,2, 3.

In one embodiment, n=0, and the distance D between the central axis of the antenna cap 36 and the central axis of the conductive member 20 is λg/2.

In one embodiment, the distance D between the central axis of the antenna cap 36 and the central axis of the conductive member 20 is λg/2+n×λg, where n is a positive integer, such as n=1, 2,3, etc.

It will be appreciated that in other embodiments, the location of the conductive member 20 is not limited to being at a distance λg/2+n λg from the antenna cap 36, and that other locations within the waveguide 18 may also produce an effect on microwave perturbation.

In some embodiments, the magnetron 14 includes an antenna cap 36 positioned within the waveguide 18, with the conductive member 20 extending into the waveguide 18, the conductive member 20 is positioned between the microwave output port 22 and the antenna cap 36 in a direction in which microwaves within the waveguide 18 are transmitted to the microwave output port 22.

Thus, the disturbance effect of the conductive member 20 to microwaves can be enhanced.

Specifically, when the antenna cap 36 radiates microwaves, most of the microwaves are transmitted towards the microwave output port 22, and when the conductive member 20 extends into the waveguide 18, along the direction that the microwaves in the waveguide 18 are transmitted to the microwave output port 22, the conductive member 20 is located between the antenna cap 36 and the microwave output product, so that most of the microwaves can encounter the conductive member 20 to generate phase shift and standing wave ratio change when the conductive member 20 performs telescopic motion, and further the disturbance effect of the conductive member 20 on the microwaves is improved.

In certain embodiments, the first motor 16 is a linear motor.

In this way, a more compact microwave cooking appliance 100 may be achieved.

Specifically, the linear motor may drive the conductive member 20 to perform a telescopic motion in an axial direction of an output shaft of the linear motor, the linear motor has a higher integration level, and the axial telescopic motion of the conductive member 20 may be realized without using other transmission parts at the outside, thereby realizing a more compact microwave cooking appliance 100.

In one embodiment, the output shaft of the linear motor may extend into waveguide 18 as conductive member 20. The linear motor can drive the screw rod to push the conductive piece 20 to move forwards and backwards through rotation, so that the length of the conductive piece 20 extending into the waveguide tube 18 is changed.

In one embodiment, the output shaft of the linear motor may be coupled to a conductive member 20, the conductive member 20 extending into the waveguide 18.

In some embodiments, the conductive element 20 positioned within the waveguide 18 stretches in the range of 10mm (millimeters) to 30mm.

In this way, the desired microwave disturbance effect can be achieved.

Specifically, the first motor 16 is free to control the amount of telescoping activity of the conductive member 20. The different insertion depths of the conductive member 20 affect the standing wave ratio and phase parameters of the microwave transmission in the waveguide 18, and the microwave in the cooking cavity is disturbed by the back and forth disturbance of the first motor 16, so that the microwave heating uniformity is improved. The conductive element 20 located within the waveguide 18 stretches from 10mm (millimeters) to 30mm to achieve the desired microwave perturbation effect.

Referring to fig. 5, the amount of telescoping activity of the conductive element 20 within the waveguide 18 is H, which may be determined by subtracting the minimum length from the maximum length of the conductive element 20. The conductive element 20 located within the waveguide 18 stretches in the range of 10mm to 30mm, that is, H may be selected from the range of 10mm to 30mm. In some examples, H = 10mm, 15mm, 20mm, 25mm, 30mm, or other value between 10mm and 30mm.

In one embodiment, the first motor 16 is a stepper motor, and the rotational speed of the stepper motor may be set to 10R/min to 20R/min, or other rotational speeds, without limitation.

In some embodiments, referring to fig. 9, the side plate includes a first plate 38 and a second plate 40, the magnetron 14, the first motor 16 and the waveguide 18 are mounted on an outer wall of the first plate 38, the microwave cooking appliance 100 further includes a second motor 42 and a turntable 44, the turntable 44 is located in the cavity 12, the second motor 42 is mounted on an outer wall of the second plate 40, and an output shaft of the second motor 42 is connected to the turntable 44 and is used for driving the turntable 44 to rotate.

Thus, the heating uniformity of the microwaves can be further improved.

Specifically, the heated food may be placed on the turntable 44, on the one hand, when the magnetron 14 is in operation, the first motor 16 drives the conductive member 20 to move so as to adjust the length of the conductive member 20 extending into the waveguide 18, the conductive member 20 may disturb the microwaves in the waveguide 18, on the other hand, when the magnetron 14 is in operation, the second motor 42 may drive the turntable 44 to rotate so as to drive the heated food to rotate, so that all parts of the heated food along the rotation direction can be heated by microwaves with substantially the same intensity, and thus, the two modes are overlapped, and the heating uniformity of the microwaves can be greatly improved.

Referring to fig. 1 and 9, the first plate 38 may serve as the right plate 32 of the chamber 12 and the second plate 40 may serve as the bottom plate 34 of the chamber 12.

In some embodiments, the conductive member 20 is cylindrical, spherical-crown, or polygonal.

In this way, the conductive member 20 is simple in structure.

Specifically, referring to fig. 6, the conductive member 20 is cylindrical in shape, the conductive member 20 may be a metal shaft, and the conductive member 20 may be an output shaft of the first motor 16 or an output shaft connected to the first motor 16.

Referring to fig. 7, the conductive member 20 is shaped like a spherical crown, the conductive member 20 may be made of metal, and a plane of the conductive member 20 is connected to the output shaft of the first motor 16.

Referring to fig. 8, the conductive member 20 is in a polygonal prism shape, specifically, a regular hexagonal prism shape, the conductive member 20 may be made of metal, and the bottom surface of the conductive member 20 is connected to the output shaft of the first motor 16. It is understood that the polygon prism may be other polygon prisms, and is not limited to a regular hexagonal prism.

It is understood that the shape of the conductive member 20 is not limited to be cylindrical, spherical or polygonal, and in other embodiments, the conductive member 20 may be other shapes, and the conductive member 20 is not limited to a metal material, and may be other conductive materials.

In summary, the microwave cooking appliance 100 of the present invention has at least the following effects:

1) The invention provides a simple microwave disturbance structure, which can eliminate an antenna, save the bottom space of the cavity 12 and further improve the cabinet loading amount of the whole machine;

2) The microwave cooking appliance 100 has the advantages of simple structure and lower cost, and can save assembly time and improve production efficiency;

3) The microwave field disturbance effect generated by the invention can achieve the effect of even cooking.

Referring to fig. 10, a control method of a microwave cooking appliance 100 according to an embodiment of the present invention includes:

step 101, acquiring a cooking start instruction;

In response to the start of the cooking command, the magnetron 14 is controlled to generate microwaves and the first motor 16 is controlled to drive the conductive member 20 relative to the waveguide 18 to adjust the length of the conductive member 20 extending into the waveguide 18, the microwaves being fed into the cavity 12 through the waveguide 18.

In the control method of the microwave cooking appliance 100, the first motor 16 is used for driving the conductive member 20 to move relative to the waveguide 18 to adjust the length of the conductive member 20 extending into the waveguide 18, so as to further disturb the microwave input into the cavity 12 by the magnetron 14 back and forth, thereby improving the uniformity of microwave heating, and being capable of replacing the original complex antenna stirring system structure, simplifying the structure and relatively simplifying the assembly.

Specifically, referring to fig. 11, the microwave cooking appliance 100 may include a controller 46 and an input assembly 48, the controller 46 being electrically connected to the input assembly 48, the input assembly 48 including, but not limited to, keys, knobs, touch screens, and the like. The user may enter cooking parameters such as a cooking time period, a cooking power, a cooking mode, etc. through the input assembly 48. After the setting is completed, a user can input a cooking start instruction through the input assembly 48, the controller 46 can acquire the cooking start instruction from the input assembly 48, and in response to the cooking start instruction, the controller 46 can control the magnetron 14 to generate microwaves and control the first motor 16 to drive the conductive piece 20 to move relative to the waveguide 18 so as to adjust the length of the conductive piece 20 extending into the waveguide 18, so that the microwaves can be disturbed, and the microwave heating uniformity is improved. In other embodiments, the cooking start instruction may also be sent to the microwave cooking appliance 100 by a terminal (e.g., a mobile phone, a tablet computer, a wearable smart device, etc.) that is communicatively connected to the microwave cooking appliance 100.

In one embodiment, the microwave cooking appliance 100 includes a second motor 42 and a turntable 44, and in response to a start cooking command, the controller 46 may control the second motor 42 to drive the turntable 44 to rotate, so as to drive the food on the turntable 44 to rotate, thereby further improving the microwave heating uniformity.

In some embodiments, the conductive element 20 positioned within the waveguide 18 stretches in the range of 10mm to 30mm.

In this way, the desired microwave disturbance effect can be achieved.

The explanation of the embodiment and the advantageous effects of the microwave cooking appliance 100 described above is also applicable to the control method of the microwave cooking appliance 100 of the present embodiment, and is not developed in detail here to avoid redundancy.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. A microwave cooking appliance, comprising:

The cavity comprises a side plate;

a magnetron mounted on an outer wall of the side plate;

The first motor is arranged on the outer wall of the side plate and is connected with a conductive piece;

The waveguide tube is arranged on the outer wall of the side plate and connected with the magnetron, and a microwave output port communicated with the inside of the cavity is formed in the waveguide tube;

The first motor is used for driving the conductive piece to move relative to the waveguide tube so as to adjust the length of the conductive piece extending into the waveguide tube.

2. The microwave cooking appliance of claim 1 wherein the magnetron includes an antenna cap positioned within the waveguide, a central axis of the antenna cap being parallel to a central axis of the conductive member.

3. The microwave cooking appliance of claim 2, wherein a distance between a central axis of the antenna cap and a central axis of the conductive member is λg/2+n λg, n being a natural number, λg being a wavelength of microwaves in the waveguide.

4. The microwave cooking appliance of claim 1 wherein the magnetron includes an antenna cap positioned within the waveguide, the conductive member being positioned between the microwave output port and the antenna cap in a direction in which microwaves within the waveguide are transmitted to the microwave output port with the conductive member extending into the waveguide.

5. The microwave cooking appliance of claim 1, wherein the first motor is a linear motor.

6. A microwave cooking appliance according to claim 1, wherein the conductive element located within the waveguide extends in the range of 10mm to 30mm.

7. The microwave cooking appliance of claim 1, wherein the side plate comprises a first plate and a second plate, the magnetron, the first motor and the waveguide are mounted on an outer wall of the first plate, the microwave cooking appliance further comprises a second motor and a turntable, the turntable is located in the cavity, the second motor is mounted on an outer wall of the second plate, and an output shaft of the second motor is connected with the turntable and is used for driving the turntable to rotate.

8. The microwave cooking appliance of claim 1, wherein the conductive member is cylindrical, spherical or polygonal in shape.

9. The control method of the microwave cooking electric appliance is characterized by comprising the following steps of:

Acquiring a cooking start instruction;

In response to the start cooking instruction, controlling a magnetron to generate microwaves and controlling a first motor to drive a conductive member to move relative to a waveguide tube to adjust the length of the conductive member extending into the waveguide tube, wherein the microwaves are fed into a cavity through the waveguide tube.

10. The control method of a microwave cooking appliance according to claim 9, wherein the telescopic range of the conductive member located in the waveguide is 10mm to 30mm.