CN223040182U - Microwave cooking appliances - Google Patents

Abstract

The utility model discloses a microwave cooking appliance. The microwave cooking appliance comprises a cooking cavity, a stirring-free microwave assembly, a turntable assembly and a turntable assembly, wherein the cooking cavity is internally provided with an opening at the top of the cooking cavity, the stirring-free microwave assembly comprises a waveguide tube, a microwave source and a plurality of antennas, the waveguide tube is connected with the cooking cavity and the microwave source, the waveguide tube is arranged at the top of the cooking cavity and covers the opening, the waveguide tube is provided with a microwave output cavity, the antennas are arranged at the microwave output cavity, the turntable assembly comprises a turntable and a motor, the turntable is positioned at the bottom of the cooking cavity, and the motor is connected with the turntable and is used for driving the turntable to rotate. In the above-mentioned microwave cooking electrical apparatus, on the one hand, a plurality of antennas can be with the microwave feed-in cooking intracavity from the top feed-in cooking intracavity of cooking chamber that the wave guide transmitted to can more scatter the microwave feed-in cooking intracavity, on the other hand, food can be placed at the carousel, and the motor can drive the carousel and drive food rotation, thereby can improve the condition that food culinary art effect is not good.

Description

Microwave cooking appliance

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a microwave cooking appliance.

Background

In the related art, a microwave oven may heat food materials in a cooking cavity using microwaves. When the microwave oven heats the food, if the microwave is unevenly distributed in the cooking cavity, the food is unevenly heated, and the cooking effect is poor.

Disclosure of utility model

The embodiment of the utility model provides a microwave cooking appliance to solve at least one technical problem.

The embodiment of the utility model provides a microwave cooking appliance, which comprises:

the cooking device comprises a cooking cavity, wherein a cooking cavity is arranged in the cooking cavity, and an opening is formed in the top of the cooking cavity;

The stirring-free microwave assembly comprises a waveguide tube, a microwave source and a plurality of antennas, wherein the waveguide tube is connected with the cooking cavity and the microwave source, the waveguide tube is arranged at the top of the cooking cavity and covers the opening, the waveguide tube is provided with a microwave output cavity, and the antennas are arranged in the microwave output cavity;

The turntable assembly comprises a turntable and a motor, wherein the turntable is positioned at the bottom of the cooking cavity, and the motor is connected with the turntable and used for driving the turntable to rotate.

In the above-mentioned microwave cooking electrical apparatus, on the one hand, a plurality of antennas can be with the microwave feed-in cooking intracavity from the top feed-in cooking intracavity of cooking chamber that the wave guide transmitted to can more scatter the microwave feed-in cooking intracavity, on the other hand, food can be placed at the carousel, and the motor can drive the carousel and drive food rotation, thereby can improve the condition that food culinary art effect is not good.

In some embodiments, the microwave cooking appliance comprises an electric chamber, the electric chamber is arranged on one side of the cooking cavity, the waveguide tube comprises an input part and an output part which are connected with each other, the microwave source is arranged in the electric chamber, the input part is arranged in the electric chamber and connected with the microwave source, the output part is arranged at the top of the cooking cavity and covers the opening, and the output part is provided with the microwave output cavity.

In the microwave cooking appliance, microwaves output by the microwave source can be fed into the cooking cavity from the top of the cooking cavity through the microwave output cavity of the waveguide tube, the microwaves can act on food in a large range, and each part of the food can be heated uniformly to a certain extent.

In some embodiments, the non-agitated microwave assembly includes a surface wave generating device disposed within the microwave output cavity, the surface wave generating device including the plurality of antennas.

In the microwave cooking appliance, the surface wave generating device can couple microwaves output by the microwave source, and the microwaves are guided by the antenna to form more uniform surface waves, so that microwave radiation in the cooking cavity is more uniform, and further, food materials can be heated more uniformly.

In some embodiments, the surface wave generating device includes a surface wave generating plate and the plurality of antennas extending from the surface wave generating plate in a direction proximate the cooking cavity.

In the microwave cooking appliance, the surface wave generating device can couple microwaves output by the microwave source, help and guide the microwaves to be uniformly spread in the cooking cavity in a surface wave mode through the surface wave generating plate and the structures of the plurality of antennas, and enable food in the cooking cavity to be further heated by uniform microwave radiation.

In some embodiments, the microwave cooking appliance includes a partition, the microwave output cavity is provided with a microwave output port, and the partition is provided at the microwave output port to separate the surface wave generating device and the cooking cavity.

In the microwave cooking appliance, microwaves output from the microwave output port can penetrate through the partition plate to enter the cooking cavity, the partition plate can separate the surface wave generating device from the cooking cavity, and the waveguide tube and the surface wave generating device are covered at the same time, so that a user is prevented from directly or indirectly touching the waveguide tube and the surface wave generating device.

In certain embodiments, the separator is a heat shield.

In the microwave cooking electric appliance, the heat in the cooking cavity can be reduced to a certain extent and spread to the top of the cooking cavity.

In some embodiments, the microwave cooking appliance includes an antenna plate, the microwave output cavity is provided with a microwave output port, the antenna plate is provided at the microwave output port to separate the microwave output cavity and the cooking cavity, and the antenna plate includes the plurality of antennas.

In the microwave cooking appliance, microwaves output through the microwave output port can be uniformly distributed in the cooking cavity, so that the microwaves can act on food in a large range, and each part of the food can be uniformly heated to a certain extent.

In certain embodiments, the antenna comprises a slot antenna and/or a feed antenna.

In the microwave cooking electric appliance, the antenna is easy to form, and the cost of the antenna plate is low.

In some embodiments, the cooking cavity comprises a bottom plate, the turntable assembly comprises a first bracket, the motor comprises a body and an output shaft, the output shaft is connected with the body, the body is arranged on one side of the bottom plate, which is away from the cooking cavity, the output shaft rotatably penetrates through the bottom plate and is connected with the first bracket, and the first bracket is rotatably arranged on the bottom plate and is connected with the turntable.

In the microwave cooking appliance, the motor can drive the first bracket to rotate with the rotary table fixed on the first bracket through the connection of the output shaft and the first bracket, so that food placed on the rotary table moves in the microwave field in the cooking cavity and can be uniformly heated by microwave radiation.

In some embodiments, the bottom plate is provided with a recess, the first bracket is arranged in the recess, and the turntable covers the recess.

In the microwave cooking electric appliance, the interior of the cooking cavity can be tidier.

Additional aspects and advantages of embodiments of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural view of a microwave cooking appliance according to an embodiment of the present utility model;

fig. 2 is another structural schematic diagram of a microwave cooking appliance according to an embodiment of the present utility model;

Fig. 3 is a schematic view of still another structure of a microwave cooking appliance according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of the microwave cooking appliance of FIG. 1 along line A-A;

fig. 5 to 6 are exploded views of a microwave cooking appliance according to an embodiment of the present utility model.

Description of main reference numerals:

The microwave oven comprises an opening 10, a waveguide tube 13, a microwave source 16, an antenna 19, a microwave output cavity 22, an input part 25, an output part 28, a surface wave generating device 31, a surface wave generating plate 34, a partition plate 37, a microwave output port 40, a recess 46, a bottom plate 50, a rotary table 53, a motor 56, a body 59, an output shaft 62, a first bracket 65, a second bracket 68, a positioning protrusion 71, a positioning hole 74, a rotary support frame 77, a rotary table assembly 80, a roller 83, a central shaft sleeve 86, a through hole 89, a non-stirring microwave assembly 90, a rotary table support point 92, an electric room 100, a cooking cavity 150, a cooking cavity 200, a door 300, a control panel 350 and a shell 400.

Microwave cooking appliance-500.

Detailed Description

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

In the description of the present utility model, 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 utility model 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 utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, 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 disclosure herein provides many different embodiments or examples for implementing different structures of the utility model. To simplify the present disclosure, components and arrangements of specific examples are described herein. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model 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 utility model 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. 1 to 5, a microwave cooking appliance 500 according to an embodiment of the present utility model includes a cooking cavity 200, a non-stirring microwave assembly 90, and a turntable assembly 80. The cooking cavity 500 is internally provided with a cooking cavity 150, the top of the cooking cavity 150 is provided with an opening 10, the stirring-free microwave assembly 90 comprises a waveguide 13, a microwave source 16 and a plurality of antennas 19, the waveguide 13 is connected with the cooking cavity 200 and the microwave source 16, the waveguide 13 is arranged at the top of the cooking cavity 150 and covers the opening 10, the waveguide 13 is provided with a microwave output cavity 22, the plurality of antennas 19 are arranged at the microwave output cavity 22, the turntable assembly 80 comprises a turntable 53 and a motor 56, the turntable 53 is positioned at the bottom of the cooking cavity 150, and the motor 56 is connected with the turntable 53 and is used for driving the turntable 53 to rotate.

In the above-mentioned microwave cooking appliance 500, on the one hand, the plurality of antennas 19 can feed the microwaves transmitted by the waveguide 13 into the cooking cavity 150 from the top of the cooking cavity 150, so that the microwaves can be fed into the cooking cavity 150 more dispersedly, on the other hand, the food can be placed on the turntable 53, and the motor 56 can drive the turntable 53 to rotate the food, so that the poor cooking effect of the food can be improved.

Specifically, the microwave cooking appliance 500 refers to various microwave appliances for cooking and preparing food materials, including, but not limited to, microwave ovens, micro-steaming and baking all-in-one machines, integrated ovens, and the like. Alternatively, referring to fig. 4 and 5, the microwave cooking appliance 500 may be a microwave oven, and the microwave cooking appliance 500 includes a power source, a microwave source 16, and an electric chamber 100, the electric chamber 100 being located at one side (right side in fig. 5) of the cooking cavity 200. Microwave source 16 is located in electric chamber 100, and waveguide 13 is partially disposed at the top of cooking chamber 150 and covers opening 10, which corresponds to the top plate of cooking chamber 200, and partially extends into electric chamber 100 and is connected to microwave source 16. During operation of the microwave cooking appliance 500, the power supply supplies a high voltage to the microwave source 16 in the electric chamber 100, and the microwave source 16 may continuously generate microwaves, which are transmitted to the cooking cavity 150 through the waveguide 13. The non-agitated microwave assembly 90 may refer to the non-agitated microwave assembly 90 not employing rotational elements such as an agitating antenna or an agitating blade to promote microwave uniformity. The microwaves are then fed into the cooking cavity 200 by the plurality of antennas 19 in the non-agitated microwave assembly 90 so that the microwaves are uniformly distributed within the cooking cavity 150. Food is placed on the turntable 53 at the bottom of the cooking cavity 150, and the motor 56 can drive the turntable 53 to drive the food to rotate in the microwave field, so as to heat the food in the cooking cavity 150, thereby improving the cooking effect of the food.

Alternatively, referring to fig. 1 and 2, the microwave cooking appliance 500 includes a door 300 rotatably connected to the cooking cavity 200, and a control panel 350 provided at a front side of the electric chamber 100, the control panel 350 for controlling the operation of the microwave cooking appliance 500.

In the related art, the traditional microwave oven mainly adopts two modes of realizing uniform heating, namely, a rotary antenna or a stirring sheet is arranged in a cooking cavity of the flat microwave oven, electromagnetic wave radiation or reflection can be carried out to various positions in the cooking cavity of the microwave oven by utilizing the rotation of the antenna or the stirring sheet and the near field radiation of the antenna, and food is placed on a glass flat plate at the bottom of the cooking cavity for heating, so that the uniform heating of the food is realized by a mode that a hot spot rotates around the food, but in practical application, the rotation speed and the mode of the antenna or the stirrer are not completely uniform, and the mode is only through the relative movement of the food and the hot spot, so that the heating effect of the food in the mode is also non-uniform; the second mode is to install a glass turntable at the bottom in the cooking cavity of the turntable microwave oven, the food is placed on the glass turntable at the bottom of the cooking cavity to be heated, the food is driven to continuously move in an uneven electromagnetic field by the rotation of the glass turntable to realize uniform heating of the food, and the heating uniformity of the microwave oven is improved relative to that of a flat plate microwave oven, but the improvement effect of the heating uniformity is limited because the mode is also only through the relative movement of the food and a hot spot.

In the embodiment of the present utility model, referring to fig. 4 and 5, the non-stirring microwave assembly 90 is disposed at the top of the cooking cavity 150, the turntable assembly 80 is disposed at the bottom of the cooking cavity 150, during the operation of the microwave cooking appliance 500, food materials are placed on the turntable 53 of the turntable assembly 80, microwaves generated by the microwave source 16 are fed into the cooking cavity 150 through the connected waveguide 13, the plurality of antennas 19 can couple the fed microwaves, so as to improve the uniform distribution of the microwaves in the cooking cavity 150, and meanwhile, the motor 56 drives the turntable 53 to drive the food materials to rotate in the microwave field in the cooking cavity 150, thereby further improving the heating uniformity of the food materials.

The microwave cooking appliance 500 includes a case 400, and the case 400 may cover the cooking cavity 200, the waveguide 13, the electric chamber 100, and the like in the rear, left, right, up and down directions.

In some embodiments, microwave cooking appliance 500 includes electric chamber 100, electric chamber 100 is disposed on one side of cooking cavity 200, waveguide 13 includes input 25 and output 28 connected to each other, microwave source 16 is disposed on electric chamber 100, input 25 is disposed on electric chamber 100 and connected to microwave source 16, output 28 is disposed on the top of cooking cavity 150 and covers opening 10, and output 28 is provided with microwave output cavity 22.

In this way, microwaves output by the microwave source 16 can be fed into the cooking cavity 150 from the top of the cooking cavity 150 through the microwave output cavity 22 of the waveguide 13, the microwaves can act on the food in a large range, and each part of the food can be heated uniformly to a certain extent.

Specifically, referring to fig. 3 and 4, the output portion 28 is disposed on top of the cooking cavity 150 and covers the opening 10, and then the opening 10 is disposed below the microwave output cavity 22, so that the area of the microwave output cavity 22 disposed on the output portion 28 is larger, and thus microwaves can be output to the cooking cavity 80 in a large range, and food in the cooking cavity 80 can be heated more uniformly. The waveguide 13 is provided with a channel extending through the input portion 25 and the output portion 28, and the microwave output cavity 22 may constitute a part of the channel, with the other part of the channel being provided in the input portion 25. The input portion 25 is provided in the electric chamber 100 and is connected to the microwave source 16, and a microwave output window of the microwave source 16 may extend into the input portion 25. Microwave source 16 includes, but is not limited to, a magnetron, a radio frequency module. In the embodiment shown in fig. 5, the microwave source 16 is a magnetron.

In some embodiments, the non-agitated microwave assembly 90 includes a surface wave generating device 31, the surface wave generating device 31 being disposed within the microwave output cavity 22, the surface wave generating device 31 including a plurality of antennas 19.

In this way, the surface wave generating device 31 can couple the microwaves output by the microwave source 16, and form a more uniform surface wave through the guidance of the antenna 19, so that the microwave radiation in the cooking cavity 150 is more uniform, and further the food material is heated more uniformly.

Specifically, the surface wave generating device 31 is disposed in the microwave output cavity 22, and the structure and size of the surface wave generating device 31 are designed according to the requirements, so that the microwave source 16 outputs and couples the microwaves through the waveguide 13, and the microwaves are assisted and guided to propagate in the cooking cavity 150 in the form of surface waves, so that the microwave radiation in the cooking cavity 150 is more uniform, the food is heated uniformly, and the heating efficiency and the cooking effect are improved.

In some embodiments, surface wave generating device 31 includes a surface wave generating plate 34 and a plurality of antennas 19, the antennas 19 extending from the surface wave generating plate 34 in a direction proximate to the cooking cavity 150.

In this manner, the surface wave generator 31 can couple microwaves output by the microwave source 16 to assist and guide the microwaves to be converted into a surface wave form by the structure of the surface wave generator 34 and the plurality of antennas 19 to be uniformly spread in the cooking cavity 150, so that the food in the cooking cavity 150 is further heated by the uniform microwave radiation.

Specifically, referring to fig. 5, the direction from the surface wave generating plate 34 to the vicinity of the cooking cavity 150 is downward, and the antenna 19 extends downward from the surface wave generating plate 34 so that microwaves can be fed downward into the cooking cavity from the top of the cooking cavity 150. The surface wave generating plate 34 and the antenna 19 are both in a sheet shape, so that it can be ensured that it can efficiently guide microwaves to form a surface wave. The manufacturing process of the surface wave generating device 31 according to the embodiment of the present utility model is not particularly limited, and in one example, the surface wave generating device 31 may be integrally manufactured by a press molding process or may be formed by a bending and welding process.

In the embodiment of the present utility model, referring to fig. 5, the plurality of antennas 19 are arranged in a matrix, so that the propagation path of the microwave in the cooking cavity 150 is more uniform, and the heating uniformity of the microwave cooking appliance 500 can be further improved, so that each portion of the food material is heated more uniformly. Optionally, in fig. 5, antenna 19 is rounded rectangular in shape, which may further direct the microwaves into a surface wave such that the microwaves are uniformly distributed within cooking cavity 150. In other embodiments, the antenna 19 may be wavy in shape.

The number of antennas n in the left-right direction and the number of antennas m in the front-rear direction, which are arranged in the matrix of the antennas 19, may be specifically defined according to actual needs, and the embodiment of the present utility model is not specifically limited thereto. In the embodiment of the present utility model, the size of the matrix m×n of the antenna 19 is 2×5. The spacing between the antennas 19 may be specifically defined according to actual needs, and the present utility model is not limited thereto.

Alternatively, the size of the antenna 19 in the front-rear direction is the same, and the size of the antenna 19 in the left-right direction is sequentially increased from right to left, so that the process of guiding microwaves to form surface waves can be optimized, and further, the microwaves are uniformly distributed in the cooking cavity 150. In other embodiments, the size of each antenna 19 may be equal. The size of the antenna 19 may be specifically defined according to practical needs, and the present utility model is not limited thereto.

In some embodiments, microwave cooking appliance 500 includes a baffle 37, microwave output cavity 22 is provided with microwave output 40, and baffle 37 is provided at microwave output 40 to separate surface wave generating device 31 from cooking cavity 150.

In this way, microwaves output from the microwave output port 40 can penetrate the partition 37 into the cooking cavity 150, and the partition 37 can separate the surface wave generating device 31 and the cooking cavity 150 while covering the waveguide 13 and the surface wave generating device 31, preventing a user from directly or indirectly touching the waveguide 13 and the surface wave generating device 31.

Specifically, when the microwave cooking appliance 500 operates, microwaves generated by the microwave source 16 are transmitted from the input part 25 to the microwave output cavity of the output part 28, and the microwaves penetrate the partition 37 from the microwave output port 40 into the cooking cavity 150 after being uniformly acted on by the microwaves of the antenna 19. In fig. 3, the output part 28 is disposed at the top of the cooking cavity 150 and covers the opening 10, the top plate of the output part 28 may correspond to the top plate of the cooking cavity 200, the output part 28 is provided with the microwave output cavity 22, the microwave output cavity 22 is provided with the microwave output port 40, and the partition 37 is disposed at the microwave output port 40 and covers the opening 10, so that the partition 37 may close the opening 10 at the upper portion of the cooking cavity 200 to form the cooking cavity 150. The partition 37 is fixedly connected to the output 28 by means including, but not limited to, bolts. The separator includes, but is not limited to, nonmetallic materials such as glass.

In certain embodiments, the spacer 37 is a heat shield.

In this manner, the diffusion of heat within the cooking cavity 150 to the top of the cooking cavity 200 may be reduced to some extent.

In one example, the heat shield may be a microwave transparent heat shield such as a mica sheet. In fig. 4, a surface wave generating device 31 is disposed in the microwave output cavity 22, and a mica sheet is employed as the partition 37, and the mica sheet allows the microwave energy to pass therethrough without absorbing or reflecting the microwaves and blocking the propagation of the microwaves, so that the microwaves can penetrate the mica sheet. The thickness of the spacer 37 may be specifically defined according to actual needs, and the present utility model is not specifically limited thereto.

When the microwave cooking appliance 500 operates, microwaves are fed into the cooking cavity 150 from the top of the cooking cavity 150. The arrangement of the heat insulation plate can reduce the heat in the cooking cavity 150 to diffuse to the top of the cooking cavity 200 to a certain extent, which is beneficial to reducing the temperature rise of the waveguide 13, the antenna 19, other electrical components at the top of the cooking cavity 200, and the like, thereby ensuring the working efficiency and the service life of the microwave cooking appliance 500.

In some embodiments, microwave cooking appliance 500 includes an antenna plate, microwave output cavity 22 is provided with microwave output port 40, the antenna plate is provided at microwave output port 40 to separate microwave output cavity 22 from cooking cavity 150, and antenna plate 34 includes a plurality of antennas 19.

In this way, microwaves output through the microwave output port 40 can be uniformly distributed in the cooking cavity 150, so that the microwaves can act on the food in a large range, and various parts of the food can be uniformly heated to a certain extent.

Specifically, referring to fig. 3, an antenna plate is disposed at the microwave output port 40 of the waveguide 13, and the antenna plate is disposed at the microwave output port 40 to separate the microwave output cavity 22 from the cooking cavity 150, and may serve as a top wall plate of the cooking cavity 150. The antenna plate is fixedly connected to the output 28 by means including, but not limited to, bolts. The antenna plate is adapted to the microwave outlet 40, and the size of the antenna plate can be determined according to the size of the microwave outlet 40.

In certain embodiments, the antenna 19 comprises a slot antenna and/or a feed antenna.

In this way, the antenna 19 is easy to form and the cost of the antenna board is low.

Specifically, the slot antenna is an antenna with slots on the surface of the antenna board, and microwaves can enter the cooking cavity 150 through the slots, and the slots can help to guide the microwaves to be uniformly distributed, so that each part of the food material can be uniformly heated to a certain extent. The size, number and arrangement of the slits may be specifically defined according to actual needs, and the present utility model is not specifically limited thereto.

Similarly, the feed port antenna is an antenna with feed ports on the surface of the antenna board, and microwaves can enter the cooking cavity 150 through the feed ports, and the feed ports can help guide the microwaves to be uniformly distributed, so that the heating uniformity of the food can be improved to a certain extent. The size, number and arrangement of the feed openings can be specifically defined according to actual needs, and the utility model is not specifically limited thereto.

In one embodiment, the antenna 19 includes a slot antenna and a feed antenna. In one embodiment, the antenna 19 comprises a slot antenna or feed antenna.

In general, the size of the feed port is larger than the size of the slot because the feed port antenna requires enough space to ensure efficient transmission of microwave energy, while the slot antenna is more focused on the propagation direction and mode of the microwave. The type of antenna may be specifically defined according to actual needs.

In the manufacture of the antenna board, a metal material may be formed into the antenna board and the plurality of antennas 19 by a stamping process. Thus, the antenna 19 is easy to form and the cost of the antenna board is low.

In some embodiments, cooking cavity 200 includes bottom plate 50, turntable assembly 80 includes first support 65, motor 56 includes body 59 and output shaft 62, output shaft 62 is connected with body 59, body 59 is provided on a side of bottom plate 50 facing away from cooking cavity 150, output shaft 62 rotatably extends through bottom plate 50 and is connected with first support 65, and first support 65 is rotatably provided on bottom plate 50 and is connected with turntable 53.

In this way, the motor 56 may be connected to the first support 65 through the output shaft 62, so as to drive the first support 65 to rotate with the turntable 53 fixed on the first support 65, so that the food placed on the turntable 53 moves in the microwave field in the cooking cavity 150, and can be uniformly heated by the microwave radiation.

Specifically, one of the turntable 53 and the first bracket 65 is provided with a positioning protrusion 71, and the other is provided with a positioning hole 74, and the positioning protrusion 71 can be clamped in the positioning hole 74, so that the turntable 53 is connected with the first bracket 65. The positioning protrusion 71 and the positioning hole 74 are mainly used for limiting the relative rotation between the turntable 53 and the first bracket 65 by the positioning protrusion 71 being clamped in the positioning hole 74, so that the turntable 53 can rotate along with the rotation of the first bracket 65. The first support 65 may provide a supporting function for the turntable 53, ensuring that the turntable 53 can be stably placed inside the cooking cavity 150. It will be appreciated that the turntable 53 may be removably placed on the first support 65 to facilitate cleaning of the turntable 53.

Alternatively, in fig. 6, a positioning boss 71 is provided at the bottom of the turntable 53, and a positioning hole 74 is provided in the middle of the first bracket 65. In other embodiments, the positioning protrusion 71 may be provided at the middle of the first bracket 65, and the positioning hole 74 may be provided at the bottom of the turntable 53. The positions and distances at which the positioning projections 71 and the positioning holes 74 are provided may be specifically defined according to actual needs, and the present utility model is not limited thereto.

The number of the positioning projections 71 and the positioning holes 74 is not particularly limited in the present utility model. In fig. 6, the number of the positioning projections 71 and the positioning holes 74 is 3, and one positioning projection 71 is correspondingly caught in one positioning hole 74.

In fig. 6, the bottom edge of the turntable 53 is provided with a plurality of turntable support points 92 for ensuring that the turntable 53 is more stable on the first support 65, preventing the turntable 53 from sliding or tilting during rotation. The number of the turntable support points 92 is not particularly limited in the present utility model, and alternatively, the number of the turntable support points 92 is 3. The material of the turntable 53 is not particularly limited in the present utility model. In one example, the turntable 53 may be made of heat resistant glass, heat resistant plastic, or ceramic.

Optionally, in fig. 6, the first support 65 further includes a rotating support 77 and a roller 83, the rotating support 77 is formed by extending at 120 ° from each other with reference to the center of the first support 65, the roller 83 is rotatably installed at the end of the rotating support 77, and one roller 83 is installed corresponding to one rotating support 77. The output shaft 62 of the motor 56 rotatably penetrates through the bottom plate 50 and is connected with the first support 65, a central shaft sleeve 86 is arranged in the middle of the first support 65, and the output shaft 62 is directly connected with the central shaft sleeve 86. During the operation of the microwave cooking appliance 500, the power supply in the electric chamber 100 transmits current to the motor 56 connected to the power supply, so that the motor 56 starts to rotate, and the rotation power of the motor 56 is transmitted to the turntable support 65 through the output shaft 62, thereby driving the turntable support 65 and the turntable 53 mounted on the turntable support 65 to rotate together, and the roller 83 on the turntable support 65 rolls on the bottom of the turntable 53, helping the turntable 53 to rotate smoothly. In summary, the motor 56 may drive the first support 65 to rotate with the turntable 53 fixed on the first support 65 through the connection between the output shaft 62 and the first support 65, so as to ensure that the food on the turntable 53 can uniformly move in the cooking cavity 150, so that each portion of the food is uniformly heated to a certain extent. The turntable support points 92 may be disposed on the rotating support frame 77 in a one-to-one correspondence.

In some embodiments, the bottom plate 50 is provided with a recess 46, and the first shelf 65 is disposed within the recess 46, with the turntable 53 covering the recess 46.

In this way, the interior of the cooking cavity 150 may be more tidy.

Specifically, referring to fig. 2 and 5, the rotation of the turntable support 65 is transmitted to the turntable 53 through the roller 83, and the roller 83 rolls at the recess 46 and the bottom of the turntable 53, so as to help the turntable 53 rotate smoothly, and drive the food on the turntable 53 to rotate uniformly in the cooking cavity 150, so that each part of the food can be heated uniformly to a certain extent.

The first support 65 is arranged in the concave 46, so that the bottom of the cooking cavity 150 is smoother, and the rotary table 53 covers the concave 46, so that juice of food materials on the rotary table 53 cannot or is not easy to drip into the concave 46, and the cooking cavity 150 is tidier.

The turntable assembly 80 includes a second bracket 68, the second bracket 68 being mounted to a side of the base plate 50 facing away from the base plate 50, the body 59 being mounted to the second bracket 68, the output shaft 62 rotatably passing through the second bracket 68. Thus, the second bracket 68 can help to fix the motor 56, prevent the motor 56 from moving or vibrating when the microwave cooking appliance 500 is operated, help to prolong the service life of the motor 56, and ensure the working efficiency of the microwave cooking appliance 500.

Referring to fig. 5 and 6, the body 59 of the motor 56 is disposed in a concave area on the surface of the second bracket 68 facing the motor 56 along the first direction, the shape contour of the concave area closely conforms to the shape contour of the body 59, and the concave area provides a stable support for the motor 56. Meanwhile, a through hole 89 is provided in the recessed area, so that the output shaft 62 can be rotatably inserted into the through hole 89 and then connected with the first bracket 65. The second bracket 68 may help to secure the motor 56, to some extent ensuring stability of placement of the motor 56, avoiding unnecessary jolts or movements.

In the description of the present specification, reference is made to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., meaning 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 utility model. 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.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A microwave cooking appliance, comprising: A cooking cavity, wherein a cooking cavity is provided in the cooking cavity, and an opening is provided at the top of the cooking cavity; A non-stirring microwave assembly, the non-stirring microwave assembly comprising a waveguide, a microwave source and a plurality of antennas, the waveguide connecting the cooking cavity and the microwave source, the waveguide being arranged at the top of the cooking cavity and covering the opening, the waveguide being provided with a microwave output cavity, the plurality of antennas being arranged in the microwave output cavity; The turntable assembly comprises a turntable and a motor. The turntable is located at the bottom of the cooking cavity. The motor is connected to the turntable and is used to drive the turntable to rotate. 2. The microwave cooking appliance according to claim 1 is characterized in that the microwave cooking appliance includes an electrical chamber, the electrical chamber is arranged on one side of the cooking cavity, the waveguide includes an input part and an output part connected to each other, the microwave source is arranged in the electrical chamber, the input part is arranged in the electrical chamber and connected to the microwave source, the output part is arranged at the top of the cooking cavity and covers the opening, and the output part is provided with the microwave output cavity. 3. The microwave cooking appliance according to claim 1, characterized in that the non-stirring microwave assembly comprises a surface wave generating device, the surface wave generating device is arranged in the microwave output cavity, and the surface wave generating device comprises the plurality of antennas. 4. The microwave cooking appliance according to claim 3, characterized in that the surface wave generating device comprises a surface wave generating plate and the plurality of antennas, and the antennas extend from the surface wave generating plate toward the cooking cavity. 5. The microwave cooking appliance according to claim 3, characterized in that the microwave cooking appliance comprises a partition, the microwave output cavity is provided with a microwave output port, and the partition is provided at the microwave output port to separate the surface wave generating device and the cooking cavity. 6 . The microwave cooking appliance according to claim 5 , wherein the partition is a heat insulation board. 7. The microwave cooking appliance according to claim 1 is characterized in that the microwave cooking appliance comprises an antenna board, the microwave output cavity is provided with a microwave output port, the antenna board is arranged at the microwave output port to separate the microwave output cavity and the cooking cavity, and the antenna board comprises the multiple antennas. 8. The microwave cooking appliance according to claim 7, characterized in that the antenna comprises a slot antenna and/or a feed antenna. 9. The microwave cooking appliance according to claim 1 is characterized in that the cooking cavity includes a bottom plate, the turntable assembly includes a first bracket, the motor includes a body and an output shaft, the output shaft is connected to the body, the body is arranged on a side of the bottom plate away from the cooking cavity, the output shaft is rotatably passed through the bottom plate and connected to the first bracket, and the first bracket is rotatably arranged on the bottom plate and connected to the turntable. 10 . The microwave cooking appliance according to claim 9 , wherein the bottom plate is provided with a depression, the first bracket is arranged in the depression, and the turntable covers the depression.