Microwave cooking electric appliance and control method thereof

Abstract

The invention discloses a microwave cooking electric appliance and a control method of the microwave cooking electric appliance. The microwave cooking electric appliance comprises a cavity, wherein the cavity comprises a side plate; the magnetrons are mounted on the outer walls of the side plates; the first motor is mounted on the outer wall of the side plate, and the first motor is connected with a conductive part; the waveguide tube is installed on the outer wall of the side plate, the waveguide tube is connected with the magnetron, and a microwave output port communicated with the interior of the cavity is formed in the waveguide tube; the first motor is used for driving the conductive member to move relative to the waveguide tube so as to adjust the length of the conductive member extending into the waveguide tube. In the microwave cooking electric appliance, the first motor is used for driving the conductive part to move relative to the waveguide tube so as to adjust the length of the conductive part extending into the waveguide tube, so that the microwave input into the cavity by the magnetron can be disturbed back and forth, the microwave heating uniformity is improved, an original complex antenna stirring system structure can be replaced, the structure is simplified, and the cost is reduced. And the assembly is relatively simple.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a microwave cooking appliance and a control method of the microwave cooking appliance. Background Art

[0002] In the related art, a microwave oven includes a stirring motor and an antenna, and the antenna is connected to the output shaft of the stirring motor. The microwaves generated by the magnetron are transmitted to the inside of the cavity, and the stirring motor drives the antenna to rotate and stir the microwaves continuously, so that the food can be heated evenly. However, the current antenna stirring system has a complex structure, many parts, and complex assembly. Summary of the invention

[0003] The embodiments of the present invention provide a microwave cooking appliance and a control method of the microwave cooking appliance to solve at least one of the above-mentioned technical problems.

[0004] A microwave cooking appliance according to an embodiment of the present invention comprises:

[0005] a cavity, the cavity comprising a side panel;

[0006] A magnetron, the magnetron being mounted on an outer wall of the side plate;

[0007] A first motor, the first motor is mounted on the outer wall of the side plate, and the first motor is connected to a conductive member;

[0008] A waveguide, the waveguide being mounted on an outer wall of the side plate, the waveguide being connected to the magnetron, and the waveguide being provided with a microwave output port communicating with the interior of the cavity;

[0009] The first motor is used for driving the conductive member to move relative to the waveguide so as to adjust the length of the conductive member extending into the waveguide.

[0010] 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, thereby disturbing the microwaves input into the cavity by the magnetron back and forth, thereby improving the uniformity of microwave heating. It can replace the original complex antenna stirring system structure, simplify the structure, and make the assembly relatively simple.

[0011] In some embodiments, the magnetron includes an antenna cap located in the waveguide tube, and a central axis of the antenna cap is parallel to a central axis of the conductive member.

[0012] 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, where n is a natural number and λg is the wavelength of the microwaves in the waveguide.

[0013] In some embodiments, the magnetron includes an antenna cap located in the waveguide, and when the conductive member extends into the waveguide, the conductive member is located between the microwave output port and the antenna cap in the direction along which microwaves in the waveguide are transmitted to the microwave output port.

[0014] In certain embodiments, the first motor is a linear motor.

[0015] In some embodiments, the conductive member within the waveguide has a telescopic range of 10 mm to 30 mm.

[0016] In some embodiments, the side panel includes 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 also includes a second motor and a turntable, the turntable is located in the cavity, the second motor is mounted on the outer wall of the second plate, and the output shaft of the second motor is connected to the turntable and is used to drive the turntable to rotate.

[0017] In some embodiments, the conductive element is in the shape of a cylinder, a spherical cap, or a polygonal column.

[0018] A control method for a microwave cooking appliance according to an embodiment of the present invention comprises:

[0019] Get instructions to start cooking;

[0020] In response to the start cooking instruction, the magnetron is controlled to generate microwaves and the first motor is controlled to drive the conductive member to move relative to the waveguide to adjust the length of the conductive member extending into the waveguide, and the microwaves are fed into the cavity through the waveguide.

[0021] In the control method of 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, thereby disturbing the microwaves input into the cavity by the magnetron back and forth, thereby improving the uniformity of microwave heating. It can replace the original complex antenna stirring system structure, simplify the structure, and make the assembly relatively simple.

[0022] In some embodiments, the conductive member within the waveguide has a telescopic range of 10 mm to 30 mm.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figures 1 to 3 A partial structural schematic diagram of a microwave cooking appliance according to an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of microwave disturbance by a conductive member according to an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of the telescopic range of the conductive member according to an embodiment of the present invention;

[0028] Figures 6 to 8 This is a schematic diagram of the connection between the first motor and the conductive member according to an embodiment of the present invention;

[0029] Fig. 9 is a cross-sectional view of a microwave cooking appliance according to an embodiment of the present invention;

[0030] Fig.10 A schematic flow chart of a control method for a microwave cooking appliance according to an embodiment of the present invention;

[0031] Fig.11 A schematic diagram of a module of a microwave cooking appliance according to an embodiment of the present invention;

[0032] Fig.12 It is a cross-sectional view of a microwave oven in the related art.

[0033] Description of reference numerals:

[0034] Microwave cooking appliance 100, cavity 12, magnetron 14, first motor 16, waveguide 18, conductive member 20, microwave output port 22, U-shaped plate 24, front plate 26, rear plate 28, left plate 30, right plate 32, bottom plate 34, antenna cap 36, first plate 38, second plate 40, second motor 42, turntable 44, controller 46, input assembly 48. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0040] Please refer to Fig.12 In the microwave oven 300 of the related art, the microwaves generated by the oscillation of the magnetron 400 are transmitted to the antenna axis 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 the rotation of the antenna 700, the different angular positions of the antenna 700 change the two parameters of the standing wave ratio and the phase of the antenna 700, thereby disturbing the microwaves. However, this will result in: 1) The overall volume ratio of the microwave oven 300 is low, the stirring motor 600 and the antenna system occupy a large space at the bottom of the cavity, and the cabinet volume is low; 2) The microwave stirring system (motor 600, antenna 700, stirring support) has a complex structure and high cost, many parts, a long assembly time, and is difficult to maintain.

[0041] Please refer to Figures 1 to 3 A microwave cooking appliance 100 provided in 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 a side panel. The magnetron 14 is mounted on the outer wall of the side panel. The first motor 16 is mounted on the outer wall of the side panel, and the first motor 16 is connected to a conductive member 20. The waveguide 18 is mounted on the outer wall of the side panel, the waveguide 18 is connected to the magnetron 14, and the waveguide 18 is provided with a microwave output port 22 connected to the interior of the cavity 12. The first motor 16 is used to 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.

[0042] In the above-mentioned microwave cooking appliance 100, the first motor 16 is used to 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, thereby disturbing the microwaves input into the cavity 12 by the magnetron 14 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.

[0043] Specifically, the microwave cooking appliance 100 includes but is not limited to a microwave oven, a microwave oven, a microwave oven-steamer-oven combination machine, an integrated stove, etc. In the illustrated embodiment, the microwave cooking appliance 100 is a microwave oven.

[0044] A cooking cavity is provided in the cavity 12, and the food to be heated can be placed in the cooking cavity. In one embodiment, the microwave oven can be a flat microwave oven, and the bottom of the cooking cavity of the flat microwave oven is flat, and the food can remain motionless during the heating process. The first motor 16 can 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 then the microwave input into the cavity 12 by the magnetron 14 can be disturbed back and forth, thereby improving the uniformity of microwave heating, and even when the food is not moving, the food can be evenly heated.

[0045] exist Figure 1 In the embodiment, 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), the front panel 26 and the rear panel 28 are respectively connected to the front and rear sides of the U-shaped panel 24, and the top panel is installed on the top of the U-shaped panel 24. The front panel 26 may be provided with an opening connected to the cooking cavity, and the microwave cooking appliance 100 further includes a door body, which is rotatably connected to the front panel 26 for opening and closing the opening.

[0046] The U-shaped plate 24 includes a left plate 30, a right plate 32 and a bottom plate 34, and the bottom plate 34 connects the left plate 30 and the right plate 32. The magnetron 14, the first motor 16 and the waveguide 18 are mounted on the outer wall of the bottom plate 34. The first motor 16 can be fixed to the bottom plate 34 by a bracket and bolts, and the magnetron 14 and the waveguide 18 can be fixed to the bottom plate 34 by bolts.

[0047] In the flat microwave oven of the related art, in order to prevent the antenna from scratching the inner partition and the U-shaped plate and igniting, the antenna or stirring piece needs to be at least 10mm away from the bottom plate and the inner partition of the cavity U-shaped plate, so the cavity bottom profile is usually about 22mm. The present invention achieves the effect of stirring microwaves by axially extending and contracting the conductive member 20, and the space of the bottom plate 34 of the U-shaped plate 24 can be compressed to 10mm, thereby improving the volume ratio and cabinet loading of the cavity 12.

[0048] It is understandable that the fixing method of the first motor 16, the magnetron 14 and the waveguide 18 is not limited to the above method, and the first motor 16, the magnetron 14 and the waveguide 18 are not limited to being installed on the outer wall of the same side panel, and the present invention does not make specific limitations on this.

[0049] The magnetron 14 may include an antenna cap 36, which is located in the waveguide 18. When the magnetron 14 is working, microwaves can be radiated from the antenna cap 36 into the waveguide 18, and the microwaves are transmitted along the waveguide 18 to the microwave output port 22, and enter the cooking cavity through the microwave output port 22 to heat the food. When the magnetron 14 is working, the first motor 16 can drive the conductive member 20 to move to adjust the length of the conductive member 20 extending into the waveguide 18, that is, 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, thereby generating a change in the microwave field intensity, thereby achieving an effect similar to that of a stirring antenna, and improving the uniformity of food heating.

[0050] The material of the conductive member 20 includes but is not limited to metal, or other conductive materials, which are not specifically limited here. In one embodiment, the conductive member 20 can be the output shaft of the first motor 16. In one embodiment, the conductive member 20 can be connected to the output shaft of the first motor 16.

[0051] In one embodiment, the conductive member 20 is cylindrical, and the waveguide tube 18 is provided with a cylindrical through hole. For example, the diameter of the through hole is 10 mm. The conductive member 20 can pass through the through hole and cooperate with the gap of the through hole. The gap between the conductive member 20 and the hole wall of the through hole can meet the requirements of preventing wave leakage or keeping the wave leakage level within the desired range.

[0052] When the first motor 16 is running, the conductive member 20 can be driven to move relative to the waveguide 18 to adjust the length of the conductive member 20 inserted into the waveguide 18. In other words, the conductive member 20 can be driven by the first motor 16 to perform telescopic movement, thereby adjusting the length of the conductive member 20 inserted into the waveguide 18 to disturb the microwave.

[0053] In some embodiments, the magnetron 14 includes an antenna cap 36 located in the waveguide 18 , and a central axis L1 of the antenna cap 36 is parallel to a central axis L2 of the conductive member 20 .

[0054] In this way, it is easy to configure the positions of the magnetron 14 and the conductive member 20, and the conductive member 20 has a good effect of disturbing microwaves.

[0055] Specifically, in one embodiment, the magnetron 14 and the waveguide tube 18 can be first installed on the outer wall of the side panel, and then, by configuring the central axis L1 of the antenna cap 36 to be parallel to the central axis L2 of the conductive member 20, the position of the conductive member 20 can be quickly located, which facilitates the installation of the conductive member 20 and the installation of the first motor 16.

[0056] In one embodiment, the conductive member 20, the first motor 16 and the waveguide tube 18 can be first installed on the outer wall of the side panel, and then the position of the magnetron 14 can be quickly located by arranging the central axis L1 of the antenna cap 36 parallel to the central axis L2 of the conductive member 20, thereby facilitating the installation of the magnetron 14.

[0057] Please refer to Figure 4 The microwaves generated by the magnetron 14 are radiated into the waveguide tube 18 through the antenna cap 36. The transmission direction of the microwaves is substantially perpendicular to the central axis L1 of the antenna cap 36. The central axis L2 of the conductive member 20 is parallel to the central axis L1 of the antenna cap 36. When the conductive member 20 performs telescopic movement, the length change of the conductive member 20 in the waveguide tube 18 can be utilized to the maximum extent to disturb the microwaves, and the disturbance effect is good.

[0058] 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, where n is a natural number and λg is the wavelength of the microwaves in the waveguide 18 .

[0059] In this way, the disturbance effect of the conductive member 20 on microwaves can be enhanced.

[0060] Specifically, the magnetron 14 generates microwaves, which are transmitted forward through the waveguide 18. Peaks and troughs appear alternately at different positions, and a total reflection effect occurs when encountering the boundary of the conductive member 20 during transmission. After the conductive member 20 (such as a metal cylindrical pin) is inserted, the microwaves encounter the conductive member 20, which will cause phase shift and standing wave ratio changes. When the insertion position of the conductive member 20, that is, the center axis of the conductive member 20 is λg / 2+n*λg away from the center axis of the antenna cap 36, the conductive member 20 has the greatest disturbance effect on the standing wave and phase, because the conductive member 20 is at a peak or trough at this time, and the electric field component changes the most, so the disturbance effect is better. n is a natural number, n=0, 1, 2, 3...

[0061] 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.

[0062] 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, and so on.

[0063] It can be understood that in other embodiments, the position of the conductive member 20 is not limited to the position at a distance λg / 2+n*λg from the antenna cap 36 , and other positions in the waveguide 18 can also produce a microwave disturbance effect.

[0064] In some embodiments, the magnetron 14 includes an antenna cap 36 located in the waveguide 18. When the conductive member 20 extends into the waveguide 18, the conductive member 20 is located between the microwave output port 22 and the antenna cap 36 along the direction in which microwaves in the waveguide 18 are transmitted to the microwave output port 22.

[0065] In this way, the disturbance effect of the conductive member 20 on microwaves can be enhanced.

[0066] Specifically, when the antenna cap 36 radiates microwaves, most of the microwaves are transmitted in the direction of the microwave output port 22. When the conductive member 20 extends into the waveguide tube 18, the microwaves in the waveguide tube 18 are transmitted in the direction of the microwave output port 22. The conductive member 20 is located between the antenna cap 36 and the microwave output port 22. When the conductive member 20 performs telescopic movement, most of the microwaves can encounter the conductive member 20 and produce phase shift and standing wave ratio change, thereby enhancing the disturbance effect of the conductive member 20 on the microwaves.

[0067] In certain embodiments, the first motor 16 is a linear motor.

[0068] In this way, a more compact microwave cooking appliance 100 can be achieved.

[0069] Specifically, the linear motor can drive the conductive member 20 to perform telescopic movement along the axial direction of the output shaft of the linear motor. The linear motor has a higher degree of integration and does not require the aid of other external transmission components to achieve the axial telescopic movement of the conductive member 20, thereby achieving a more compact microwave cooking appliance 100.

[0070] In one embodiment, the output shaft of the linear motor can be used as a conductive member 20 and extend into the waveguide 18. The linear motor can drive the screw to push the conductive member 20 forward and backward by rotating, thereby achieving a change in the length of the conductive member 20 extending into the waveguide 18.

[0071] In one embodiment, the output shaft of the linear motor may be connected to a conductive member 20 , which extends into the waveguide 18 .

[0072] In some embodiments, the conductive member 20 within the waveguide 18 has a telescopic range of 10 mm (millimeter) to 30 mm.

[0073] In this way, the desired microwave disturbance effect can be achieved.

[0074] Specifically, the first motor 16 can freely control the extension and retraction of the conductive member 20. Different insertion depths of the conductive member 20 will affect the standing wave ratio and phase parameters of microwave transmission in the waveguide 18. The first motor 16 disturbs the microwave in the cooking cavity, thereby improving the uniformity of microwave heating. The extension range of the conductive member 20 in the waveguide 18 is 10 mm (millimeter) to 30 mm, which can achieve the desired microwave disturbance effect.

[0075] Please refer to Figure 5 , the telescopic activity of the conductive member 20 in the waveguide 18 is H, which can be determined by subtracting the minimum length from the maximum length of the conductive member 20. The telescopic range of the conductive member 20 in the waveguide 18 is 10 mm to 30 mm, that is, H can be selected from the telescopic range of 10 mm to 30 mm. In some examples, H = 10 mm, 15 mm, 20 mm, 25 mm, 30 mm or other values ​​between 10 mm and 30 mm.

[0076] In one embodiment, the first motor 16 is a stepper motor, and the rotation speed of the stepper motor can be set to 10R / min to 20R / min, or other rotation speeds, which are not specifically limited here.

[0077] In certain embodiments, see 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 the outer wall of the first plate 38, the microwave cooking appliance 100 also 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 the outer wall of the second plate 40, and the output shaft of the second motor 42 is connected to the turntable 44 and is used to drive the turntable 44 to rotate.

[0078] In this way, the uniformity of microwave heating can be further improved.

[0079] Specifically, the food to be heated can be placed on the turntable 44. On the one hand, when the magnetron 14 is working, the first motor 16 drives the conductive member 20 to move to adjust the length of the conductive member 20 extending into the waveguide 18. The conductive member 20 can disturb the microwaves in the waveguide 18. On the other hand, when the magnetron 14 is working, the second motor 42 can drive the turntable 44 to rotate, thereby driving the heated food to rotate, so that each part of the heated food along the rotation direction can be heated by microwaves of basically the same intensity. In this way, the two methods are superimposed to greatly improve the uniformity of microwave heating.

[0080] Please combine Figure 1 and Fig. 9 The first plate 38 can serve as the right plate 32 of the cavity 12 , and the second plate 40 can serve as the bottom plate 34 of the cavity 12 .

[0081] In some embodiments, the conductive member 20 is in the shape of a cylinder, a spherical cap, or a polygonal column.

[0082] Thus, the structure of the conductive member 20 is simple.

[0083] For details, please refer to Figure 6 The conductive member 20 is cylindrical in shape, and may be a metal shaft. The conductive member 20 may be an output shaft of the first motor 16 or an output shaft connected to the first motor 16 .

[0084] Please refer to Figure 7 The conductive member 20 is in the shape of a spherical cap and may be made of metal. The plane of the conductive member 20 is connected to the output shaft of the first motor 16 .

[0085] Please refer to Figure 8 The conductive member 20 is in the shape of a polygonal prism, specifically a regular hexagonal prism, and 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 can be understood that the polygonal prism may also be other polygonal prisms, not limited to regular hexagonal prisms.

[0086] It can be understood that the shape of the conductive member 20 is not limited to a cylindrical, spherical or polygonal shape. In other embodiments, the conductive member 20 may also be other shapes. The conductive member 20 is not limited to metal materials, but may also be other conductive materials.

[0087] In summary, the microwave cooking appliance 100 of the present invention has at least the following effects:

[0088] 1) The present invention proposes a simple microwave disturbance structure, which can remove the antenna, save the bottom space of the cavity 12, and thus increase the cabinet loading capacity of the whole machine;

[0089] 2) The microwave cooking appliance 100 of the present invention has a simple structure and low cost, can save assembly time, and improve production efficiency;

[0090] 3) The microwave field disturbance effect produced by the present invention can achieve a uniform cooking effect.

[0091] Please refer to Fig.10 A control method of a microwave cooking appliance 100 according to an embodiment of the present invention includes:

[0092] Step 101, obtaining a cooking start instruction;

[0093] Step 103 , in response to the start cooking instruction, the magnetron 14 is controlled to generate microwaves and the first motor 16 is controlled to 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 the microwaves are fed into the cavity 12 through the waveguide 18 .

[0094] In the control method of the above-mentioned microwave cooking appliance 100, the first motor 16 is used to drive the conductive member 20 to move relative to the waveguide tube 18 to adjust the length of the conductive member 20 extending into the waveguide tube 18, thereby disturbing the microwave input into the cavity 12 by the magnetron 14 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.

[0095] For details, please refer to Fig.11 The microwave cooking appliance 100 may include a controller 46 and an input component 48. The controller 46 is electrically connected to the input component 48. The input component 48 includes but is not limited to buttons, knobs, and a touch screen. The user can input cooking parameters such as cooking time, cooking power, cooking mode, etc. through the input component 48. After the setting is completed, the user can input a start cooking instruction through the input component 48, and the controller 46 can obtain the start cooking instruction from the input component 48. In response to the start cooking instruction, the controller 46 can control the magnetron 14 to generate microwaves and control the first motor 16 to 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, thereby disturbing the microwaves and improving the uniformity of microwave heating. In other embodiments, the start cooking instruction can also be sent to the microwave cooking appliance 100 by a terminal (such as a mobile phone, a tablet computer, a wearable smart device, etc.) that is connected to the microwave cooking appliance 100 for communication.

[0096] In one embodiment, the microwave cooking appliance 100 includes a second motor 42 and a turntable 44. In response to a start cooking instruction, the controller 46 can control the second motor 42 to drive the turntable 44 to rotate, thereby driving the food on the turntable 44 to rotate, further improving the uniformity of microwave heating.

[0097] In some embodiments, the conductive member 20 within the waveguide 18 has a telescopic range of 10 mm to 30 mm.

[0098] In this way, the desired microwave disturbance effect can be achieved.

[0099] It should be noted that the above explanations of the implementation and beneficial effects of the microwave cooking appliance 100 are also applicable to the control method of the microwave cooking appliance 100 of the present embodiment, and will not be elaborated here in detail to avoid redundancy.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A microwave cooking appliance, characterized in that: include: a cavity, the cavity comprising a side panel; A magnetron, the magnetron being mounted on an outer wall of the side plate; A first motor, the first motor is mounted on the outer wall of the side plate, and the first motor is connected to a conductive member; A waveguide, the waveguide being mounted on an outer wall of the side plate, the waveguide being connected to the magnetron, and the waveguide being provided with a microwave output port communicating with the interior of the cavity; The first motor is used for driving the conductive member to move relative to the waveguide so as to adjust the length of the conductive member extending into the waveguide.

2. The microwave cooking appliance according to claim 1, characterized in that: The magnetron comprises an antenna cap located in the waveguide tube, and a central axis of the antenna cap is parallel to a central axis of the conductive member.

3. The microwave cooking appliance according to claim 2, characterized in that: The distance between the central axis of the antenna cap and the central axis of the conductive member is λg / 2+n*λg, where n is a natural number and λg is the wavelength of the microwave in the waveguide.

4. The microwave cooking appliance according to claim 1, characterized in that: The magnetron includes an antenna cap located in the waveguide tube. When the conductive member extends into the waveguide tube, the conductive member is located between the microwave output port and the antenna cap along the direction in which the microwave in the waveguide tube is transmitted to the microwave output port.

5. The microwave cooking appliance according to claim 1, characterized in that: The first motor is a linear motor.

6. The microwave cooking appliance according to claim 1, characterized in that: The telescopic range of the conductive member in the waveguide is 10 mm to 30 mm.

7. The microwave cooking appliance according to claim 1, characterized in that: The side plate includes 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 also includes a second motor and a turntable, the turntable is located in the cavity, the second motor is mounted on the outer wall of the second plate, and the output shaft of the second motor is connected to the turntable and is used to drive the turntable to rotate.

8. The microwave cooking appliance according to claim 1, characterized in that: The conductive element is in the shape of a cylinder, a spherical cap or a polygonal column.

9. A control method for a microwave cooking appliance, characterized in that: include: Get instructions to start cooking; In response to the start cooking instruction, the magnetron is controlled to generate microwaves and the first motor is controlled to drive the conductive member to move relative to the waveguide to adjust the length of the conductive member extending into the waveguide, and the microwaves are fed into the cavity through the waveguide.

10. The control method of a microwave cooking appliance according to claim 9, characterized in that: The telescopic range of the conductive element in the waveguide is 10 mm to 30 mm.

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