CN117835479A - Surface wave generator, microwave assembly and cooking appliance - Google Patents

Abstract

The application discloses a surface wave generator, a microwave assembly and a cooking appliance. The surface wave generator provided by the embodiment of the application comprises a bottom plate, a first bulge and a second bulge. The first protrusion is disposed adjacent to a side edge of the base plate. The second bulges are arranged on the bottom plate, the second bulges are arranged at intervals with the first bulges, and the height of the first bulges is higher than that of the second bulges relative to the bottom plate. So, through the first arch and the second arch that the interval set up for the microwave source can be with the surface wave generator excitation out even surface wave, and energy distribution makes the food can be heated evenly more, thereby can shorten heating time in order to improve heating efficiency, save simultaneously and rotate the setting of part, reduced cooking appliance's structural complexity.

Description

Surface wave generator, microwave assembly and cooking appliance

Technical Field

The application relates to the technical field of cooking appliances, in particular to a surface wave generator, a microwave assembly and a cooking appliance.

Background

In the related art, when a microwave oven heats food, the food is placed on a turntable, and uniform heating of the food can be achieved by rotation of the turntable. However, during the heating process, water, grease and other stains can splash and leak due to rotation, and the stains flow into a motor to cause winding short circuit or gear damage, so that the turntable does not rotate, and finally, the food is heated unevenly.

Disclosure of Invention

The embodiment of the application provides a surface wave generator, a microwave assembly and a cooking appliance.

The surface wave generator provided by the embodiment of the application comprises a bottom plate, a first bulge and a second bulge. The first protrusion is disposed adjacent to a side edge of the base plate. The second bulges are arranged on the bottom plate, the second bulges are arranged at intervals with the first bulges, and the height of the first bulges is higher than that of the second bulges relative to the bottom plate.

So, through the first arch and the second arch that the interval set up for the microwave source can be with the surface wave generator excitation out even surface wave, and energy distribution makes the food can be heated evenly more, thereby can shorten heating time in order to improve heating efficiency, save simultaneously and rotate the setting of part, reduced cooking appliance's structural complexity.

In some embodiments, the number of the first protrusions is one, the number of the second protrusions is a plurality, and the plurality of the second protrusions are arranged at intervals.

In some embodiments, the number of the second protrusions is plural, and the second protrusions are arranged equidistantly.

In certain embodiments, the second protrusions are of equal height relative to the base plate.

In some embodiments, the first protrusion and the second protrusion are elongated, and a length direction of the first protrusion is parallel to a length direction of the second protrusion.

Embodiments of the present application provide a microwave assembly comprising a microwave source and a surface wave generator as described in any of the above embodiments, the microwave source configured to provide energy to the surface wave generator to excite the surface wave generator to produce a surface wave.

In some embodiments, the microwave source includes a body and an antenna head coupled to the body, the antenna head disposed between the first protrusion and the second protrusion.

In some embodiments, the spacing between the antenna head and the first protrusion is a first spacing, the spacing between the antenna head and the adjacent second protrusion is a second spacing, and the first spacing is equal to the second spacing.

In certain embodiments, the antenna head is equal in height to the second protrusion relative to the base plate.

The cooking appliance provided by the embodiment of the application comprises a cavity and the microwave assembly in any embodiment. The cavity is provided with a cooking cavity and a perspective window, the cooking cavity is exposed from a plurality of different directions through the perspective window, an included angle between the two directions is larger than or equal to 90 degrees, and the perspective window can shield microwaves. The surface wave generator is configured to generate a surface wave that acts on a predetermined space of the cooking chamber.

Additional aspects and advantages of embodiments of the application 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 application.

Drawings

The foregoing and/or additional aspects and advantages of the present application 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 cross-sectional view of a microwave assembly of an embodiment of the present application;

fig. 2 is a schematic structural view of a cooking appliance according to an embodiment of the present application;

FIG. 3 is a graph of the surface field strength profile of a surface wave generator according to an embodiment of the present application;

fig. 4 is another schematic view of the structure of the cooking appliance of the embodiment of the present application;

fig. 5 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 6 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 7 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 8 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 9 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 10 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 11 is a further schematic view of the structure of the cooking appliance of the embodiment of the present application;

fig. 12 is a further schematic view of the structure of the cooking appliance of the embodiment of the present application.

Description of main reference numerals:

the cooking appliance 100, the cavity 10, the tray 11, the enclosure 12, the side wall 121, the top wall 122, the handle 13, the cooking chamber 101, the microwave exit window 102, the see-through window 103, the surface wave generator 20, the bottom plate 21, the first protrusion 22, the second protrusion 23, the microwave source 30, the main body 31, the antenna head 32, and the microwave assembly 40.

Detailed Description

Embodiments of the present application 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 embodiments of the present application and are not to be construed as limiting the embodiments of the present application.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements 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 application. 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 of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, 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, and may also include the first and second features not being in direct contact but being in contact with each other by way of 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 structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 and 2, a cooking appliance 100 according to an embodiment of the present application includes a cavity 10 and a microwave assembly 40. The microwave assembly 40 provided in an embodiment of the present application includes a microwave source 30 and a surface wave generator 20, the microwave source 30 being configured to provide energy to the surface wave generator 20 to excite the surface wave generator 20 to generate a surface wave.

Referring to fig. 1, a surface wave generator 20 provided in an embodiment of the present application includes a bottom plate 21, a first bump 22, and a second bump 23. The first protrusion 22 is disposed near one side edge of the bottom plate 21. The second protrusions 23 are disposed on the bottom plate 21, the second protrusions 23 are disposed at intervals from the first protrusions 22, and the height of the first protrusions 22 is higher than the height of the second protrusions 23 with respect to the bottom plate 21.

In the related art, when a microwave oven heats food, the food is placed on a turntable, and uniform heating of the food can be achieved by rotation of the turntable. However, during the heating process, water, grease and other stains can splash and leak due to rotation, and the stains flow into a motor to cause winding short circuit or gear damage, so that the turntable does not rotate, and finally, the food is heated unevenly.

In the surface wave generator 20, the microwave assembly 40 and the cooking electric appliance 100 provided in the embodiment of the application, by setting the first protrusion 22 and the second protrusion 23, the microwave source 30 can excite a uniform surface wave with the surface wave generator 20, the energy distribution is more uniform, so that food can be uniformly heated, the heating time can be shortened to improve the heating efficiency, meanwhile, the setting of rotating parts is omitted, and the structural complexity of the cooking electric appliance 100 is reduced.

In the case of no load of the cooking appliance 100, the structure shown in fig. 1 is simulated to obtain electric field distribution in the cooking appliance 100 at a certain operating frequency, and the result is shown in fig. 3. The longitudinal electric field distribution of the surface waves generated by the first and second protrusions 22 and 23 is such that the microwave source 30 is capable of exciting the first and second protrusions 22 and 23 to generate uniform longitudinal surface waves, and the surface wave energy is capable of covering a large portion of the cooking appliance 100 with less reflection. Therefore, the microwave source 30 can be well matched with the first and second protrusions 22 and 23 in the cavity 10 of the cooking appliance 100, thereby improving heating uniformity of the cooking appliance 100.

Specifically, the bottom plate 21 may be made of a metal material, and the bottom plate 21 may be circular, square, or other shapes, which is not limited herein. The first protrusion 22 and the second protrusion 23 are made of metal materials, for example, copper, aluminum, or other metals with good conductivity. The first protrusion 22 and the second protrusion 23 may have a rectangular parallelepiped shape, and the first protrusion 22 and the second protrusion 23 are vertically disposed on the bottom plate 21.

Wherein the first protrusion 22 and the second protrusion 23 may be provided with a tray 11, and the tray 11 may be used to carry food. The tray 11 may be made of a material having high heat resistance and being penetrable by microwaves, such as ceramic, glass, or heat-resistant plastic. The excitation of the microwave source 30 causes the first protrusion 22 and the second protrusion 23 to generate uniform longitudinal surface waves that penetrate the tray 11 to heat the food on the tray 11.

Referring to fig. 1, in some embodiments, the number of the first protrusions 22 is one, the number of the second protrusions 23 is plural, and the plural second protrusions 23 are spaced apart. Thus, the plurality of second protrusions 23 are spaced apart on the base plate 21, and the microwave source 30 is capable of exciting the first protrusions 22 and the plurality of second protrusions 23 to generate uniform surface waves.

Referring to fig. 1, in some embodiments, the number of the second protrusions 23 is plural, and the plurality of second protrusions 23 are arranged equidistantly. Thus, the plurality of second protrusions 23 are equally spaced so that the microwaves generated by the surface wave generator 20 are uniform, thereby making the food heated by the microwaves heated uniformly.

Referring to fig. 1, in some embodiments, the second protrusions 23 are of equal height relative to the base plate 21. In this manner, the heights of the plurality of second protrusions 23 are the same relative to the base plate 21, so that the microwave source 30 can excite the plurality of second protrusions 23 to generate uniform surface waves.

Specifically, each of the second protrusions 23 is identical in shape, thickness, width, and pitch between any adjacent two of the second protrusions 23 except for the height with respect to the bottom plate 21. In one embodiment, the number of the second protrusions 23 is 8, and 8 identical second protrusions 23 are equally spaced and vertically disposed on the bottom plate 21.

Referring to fig. 1, in some embodiments, the first protrusion 22 and the second protrusion 23 are elongated, and the length direction of the first protrusion 22 is parallel to the length direction of the second protrusion 23. In this manner, the microwave source 30 is capable of exciting the first bump 22 and the second bump 23 to produce a uniform surface wave.

In some embodiments, the first protrusion 22 and the second protrusion 23 may also have a cylindrical shape, etc., without limitation. In some embodiments, the shape of the first protrusion 22 and the second protrusion 23 may also be different.

The microwave assembly 40 provided in an embodiment of the present application includes a microwave source 30 and the surface wave generator 20 described in any of the embodiments above, the microwave source 30 being configured to provide energy to the surface wave generator 20 to excite the surface wave generator 20 to generate a surface wave.

Thus, the microwave source 30 can excite the surface wave generator 20 to generate high-power electromagnetic waves and radiate uniform surface waves, thereby improving the heating uniformity of the cooking appliance 100. The microwave source 30 is directly fed as part of the surface wave generator 20 to directly excite the microwave surface wave to heat the food.

Specifically, the microwave source 30 can excite a uniform surface wave in the cooking chamber 101 and the surface wave generator 20, and the first protrusion 22 and the second protrusion 23 are used for guiding the electromagnetic wave to propagate by using a slow wave structure, so that the propagation speed of the electromagnetic wave is smaller than the wave speed of the free space, and the electromagnetic wave propagates regularly along the axial direction of the structure, namely, the surface wave.

Referring to fig. 1, in some embodiments, the microwave source 30 includes a body 31 and an antenna head 32 connected to the body 31, the antenna head 32 being disposed between the first protrusion 22 and the second protrusion 23. In this way, under the action of the main body 31 and the antenna head 32, the antenna head 32 can transmit and radiate electromagnetic waves generated by the main body 31 to the surface wave generator 20, so that the surface wave generator 20 excites uniform surface waves, the energy distribution in the cavity 10 is more uniform, and the heating efficiency is further improved.

In particular, the microwave source 30 may be a magnetron. A magnetron is an electric vacuum device used to generate microwave energy. Electrons in the magnetron interact with the high-frequency electromagnetic field under the control of the constant magnetic field and the constant electric field which are perpendicular to each other, and energy obtained from the constant electric field is converted into microwave energy, so that the purpose of generating microwave energy is achieved. The microwave surface wave generated by the body is utilized to excite the microwave to heat the food material. The antenna head 32 may be made of a metal material, and may be elongated.

In some embodiments, the base plate 21 has a through hole formed therein, and the antenna head 32 of the microwave source 30 is inserted into the through hole, and the body 31 is mounted on a side of the base plate 21 facing away from the first protrusion 22 and the second protrusion 23.

Referring to fig. 1, in some embodiments, the space between the antenna head 32 and the first protrusion 22 is a first space H1, the space between the antenna head 32 and the adjacent second protrusion 23 is a second space H2, and the first space H1 is equal to the second space H2. Thus, the antenna head 32 can uniformly transmit and radiate electromagnetic waves generated by the main body 31 to the first bump 22 and the second bump 23, thereby exciting relatively uniform surface waves.

Referring to fig. 1, in some embodiments, the antenna head 32 is equal in height to the second protrusion 23 relative to the base 21. In this way, the antenna head 32 can replace the second bump 23 of a part of the original surface wave generator 20 without affecting the surface wave generator 20 to generate a uniform surface wave, so that the antenna head 32 can uniformly transmit and radiate electromagnetic waves to the first bump 22 and the second bump 23.

The cooking appliance 100 provided in the embodiment of the present application includes the cavity 10 and the microwave assembly 40 described in any of the embodiments above. The cavity 10 has a cooking chamber 101 and a perspective window 102, the cooking chamber 101 is exposed from a plurality of different directions through the perspective window 102, wherein an included angle between the two directions is greater than or equal to 90 degrees, and the perspective window 102 is capable of shielding microwaves. The surface wave generator 20 is for generating a surface wave that acts on a predetermined space of the cooking chamber 101.

In this way, the user can observe the heating state of the food in the cooking chamber 101 from a plurality of different directions through the perspective window 102, so that the observation field of view is wider, and the use experience of the user can be improved.

The cooking appliance 100 may heat the food in the cavity 10 by using the surface waves generated by the surface wave generator 20, and the user may observe the heating state of the food in the cooking chamber 101 through the perspective window 102. The cavity 10 may have a substantially rectangular parallelepiped shape, a spherical shape, a cylindrical shape, or the like. The cooking appliance 100 may include, but is not limited to, a microwave oven, a microwave rice cooker, a micro-steaming and baking all-in-one machine, and the like.

In particular, the see-through window 102 is made of glass or plastic or other see-through material. And the light transmittance of the transparent window 102 is greater than 75%, so as to ensure that the user can clearly observe the internal state of the cooking chamber 101 through the transparent window 102. In one embodiment, the transparent window 102 may include glass and an electromagnetic shielding layer disposed on a side of the glass near the cooking chamber 101, to which the glass may be coupled by bonding, pressing, or the like. Wherein, glass material with high heat resistance and high light transmittance can be selected as glass material, and the electromagnetic shielding layer can be a metal net. The cooking chamber 101 may be viewed through the perspective window 102 from multiple directions in the cooking chamber 101.

Referring to fig. 2, in some embodiments, the cavity 10 may further include an enclosure 12 and a tray 11, the tray 11 being disposed above the surface wave generator 20, the tray 11 being configured to carry an object to be cooked, the tray 11 and the enclosure 12 enclosing a cooking chamber 101. Wherein the tray 11 is detachably connected with the enclosure 12, and the enclosure 12 can be selectively covered on the tray 11 or separated from the tray 11. Thus, when cooking food, a user can cover the enclosure 12 on the tray 11 to form the cooking chamber 101 so as to heat the food, and after heating, the user can separate the enclosure 12 from the tray 11 so as to take the food from the tray 11.

Referring to fig. 1 and 2, in some embodiments, a surface wave generator 20 may be disposed below the tray 11. In this manner, the surface waves generated by the surface wave generator 20 may pass through the tray 11 into the cooking chamber 101 to heat the items in the cooking chamber 101. Specifically, the tray 11 may be made of a material having good heat resistance, wherein the shape of the tray 11 may be circular, rectangular, etc., without limitation.

It should be noted that, the predetermined space is a side of the cooking chamber 101 near the surface wave generator 20, that is, a side near the tray 11, and as shown in fig. 3, the surface wave generator 20 can emit uniform surface waves in the predetermined space, when the food to be heated is placed on the tray 11, the food can be uniformly heated by using the relatively uniform surface waves generated by the surface wave generator 20, and the user can observe the heating process through the transparent window 102.

Referring to fig. 4-6, in some embodiments, the number of perspective windows 102 is at least two, wherein the angle between the orientations of the two perspective windows 102 is greater than or equal to 90 degrees. In this way, the user can view the cooking chamber 101 through the plurality of perspective windows 102, and can also view from the remaining perspective windows 102 when one of the moisture shields the perspective window 102.

Referring to fig. 4, in one embodiment, the cooking appliance 100 is rectangular and has two perspective windows 102 on the cavity 10, wherein one perspective window 102 faces to the right, the other perspective window 102 faces upward, and an angle between the two perspective windows 102 is 90 °.

Referring to fig. 5, in another embodiment, the cooking appliance 100 is cylindrical, and the cavity 10 has two perspective windows 102, wherein one perspective window 102 faces forward, the other perspective window 102 faces upward, and an angle between the two perspective windows 102 is 90 °.

Referring to fig. 6, in still another embodiment, the cooking apparatus 100 is cylindrical, and the cavity 10 has three perspective windows 102, wherein one perspective window 102 faces to the left, the other perspective window 102 faces to the front, and the angle between the orientations of any two perspective windows 102 is 90 °, so that a user can observe the cooking chamber 101 through the three perspective windows 102, thereby improving the user experience.

Referring to fig. 7, in some embodiments, the enclosure 12 of the cavity 10 may include a sidewall 121 and a top wall 122 connected to the top wall 122, the number of the sidewalls 121 being plural, and at least two of the sidewalls 121 and the top wall 122 being formed with the see-through window 102. Thus, when one of the water vapor shields the perspective window 102, the user can observe the state in the cooking chamber 101 from the other perspective window 102, and the user can observe the state in the cooking chamber 101 from a plurality of angles through the perspective window 102 to improve the user experience.

Referring to fig. 8, in one embodiment, a top wall 122 and one of side walls 121 of cooking appliance 100 are formed with a perspective window 102, and a user can observe a state in cooking chamber 101 through top wall 122 and perspective window 102 on side wall 121.

Referring to fig. 9, in still another embodiment, a perspective window 102 is formed on a top wall 122 and two side walls 121 of the cooking appliance 100, and the two side walls 121 with the perspective window 102 are disposed opposite to each other.

Referring to fig. 10 and 11, in another embodiment, a perspective window 102 is formed on a top wall 122 and two side walls 121 of the cooking appliance 100, and the two side walls 121 formed with the perspective window 102 are vertically disposed.

Referring to fig. 12, in still another embodiment, perspective windows 102 are formed on a top wall 122 and four side walls 121 of the cooking appliance 100, and a cup containing milk is placed on a tray 11 in the cooking chamber 101, so that a user can observe the state of the cup in the cooking chamber 101 through the perspective windows 102 on the top wall 122 and the four side walls 121, and the observation angle of the user can be enlarged to improve the user experience.

It will be appreciated that in some embodiments, the area of the see-through window 102 may be smaller than the area of the side walls 121 and/or the top wall 122, as shown in fig. 11. In one embodiment, the side wall 121 and the top wall 122 of the cooking appliance 100 are provided with perspective windows 102, and a user can observe the heating state of food in the cooking chamber 101 through the perspective windows 102 on the side wall 121 and the top wall 122. The shape of the transparent window 102 may be circular, rectangular, or other shapes.

In some embodiments, the area of the perspective window 102 is equal to the area of the side wall 121 and/or the top wall 122, as shown in fig. 10 and 12, or the entire side wall 121 and/or the top wall 122 is the perspective window 102, and the user can observe the heating state of the food in the cooking chamber 101 at any angle through the side wall 121 and the top wall 122.

In some embodiments, enclosure 12 is made of a see-through material and is capable of shielding microwaves, and cooking chamber 101 is exposed through enclosure 12. In this way, under the premise that the enclosure 12 can shield microwaves to avoid microwave leakage, the enclosure 12 made of the perspective material can enlarge the field of view of a user when observing the cooking cavity 101, so that the user can observe from multiple directions, and the use experience of the user is improved.

In particular, the see-through material may be glass or plastic, etc. It should be noted that when selecting the material of the enclosure 12, it is also necessary to consider that the enclosure 12 has high heat resistance, so as to avoid the enclosure 12 from being overheated and deformed or the enclosure 12 being too high in temperature to scald the user during the cooking process, and in addition, the enclosure 12 should have high light transmittance, so as to improve the definition when observing the cooking chamber 101 through the enclosure 12 to improve the user experience.

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 application. 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present application, 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 present application.

Claims (10)

1. A surface wave generator, comprising:

a bottom plate;

the first bulge is arranged close to one side edge of the bottom plate;

the second bulge is arranged on the bottom plate, the second bulge and the first bulge are arranged at intervals, and the height of the first bulge is higher than that of the second bulge relative to the bottom plate.

2. The surface wave generator of claim 1, wherein the number of first protrusions is one, the number of second protrusions is a plurality, and the plurality of second protrusions are spaced apart.

3. The surface wave generator of claim 1, wherein the number of second protrusions is plural, and the second protrusions are arranged equidistantly.

4. The surface wave generator of claim 3, wherein the second protrusions are of equal height relative to the base plate.

5. The surface wave generator of claim 1, wherein the first bump and the second bump are elongated, and a length direction of the first bump is parallel to a length direction of the second bump.

6. A microwave assembly, comprising:

the surface wave generator of any one of claims 1-5; and

a microwave source for providing energy to the surface wave generator to excite the surface wave generator to generate a surface wave.

7. The microwave assembly of claim 6, wherein the microwave source comprises a body and an antenna head coupled to the body, the antenna head disposed between the first protrusion and the second protrusion.

8. The microwave assembly of claim 7, wherein the antenna head is spaced from the first protrusion by a first spacing and the antenna head is spaced from the adjacent second protrusion by a second spacing, the first spacing being equal to the second spacing.

9. The microwave assembly of claim 7, wherein the antenna head is equal in height to the second protrusion relative to the base plate.

10. A cooking appliance, comprising:

the cavity is provided with a cooking cavity and a perspective window, the cooking cavity is exposed from a plurality of different directions through the perspective window, an included angle between the two directions is larger than or equal to 90 degrees, and the perspective window can shield microwaves;

the microwave assembly of any of claims 6-9, the surface wave generator to generate a surface wave that acts on a predetermined space of the cooking chamber.