CN117823962A - Cooking appliance - Google Patents

Abstract

The application discloses a cooking appliance. The cooking appliance comprises a cavity, a surface wave generator and an ultraviolet generator. The cavity has a cooking chamber and a microwave exit window through which microwaves can pass. The surface wave generator is used for generating a surface wave, and the surface wave acts on a preset space of the cooking cavity, and the preset space is arranged at a distance from the microwave exit window. The ultraviolet generator is positioned outside the cooking cavity and is arranged corresponding to the microwave exit window, and the ultraviolet generator is used for emitting ultraviolet rays into the cooking cavity through the microwave exit window under the action of microwaves. Thus, the surface wave generated by the surface wave generator can be used for exciting the ultraviolet generator to emit ultraviolet rays to disinfect and sterilize foods besides heating the foods in the cooking cavity, so that the utilization rate of microwaves can be improved.

Description

Cooking appliance

Technical Field

The application relates to the technical field of cooking appliances, in particular to a cooking appliance.

Background

The household microwave oven is mainly used for food cooking and can also have a certain disinfection and sterilization function. In the related art, the ultraviolet sterilizing device is disposed in the cavity, and after a period of use, steam, oil mist, etc. generated during the heating process are often attached to the ultraviolet sterilizing device, thereby reducing the sterilizing capacity of the ultraviolet sterilizing device.

Disclosure of Invention

The embodiment of the application provides a cooking appliance.

The cooking appliance provided by the embodiment of the application comprises a cavity, a surface wave generator and an ultraviolet generator. The cavity has a cooking chamber and a microwave exit window through which microwaves can pass. The surface wave generator is used for generating a surface wave, and the surface wave acts on a preset space of the cooking cavity, and the preset space is arranged at a distance from the microwave exit window. The ultraviolet generator is positioned outside the cooking cavity and corresponds to the microwave exit window, and the ultraviolet generator is used for emitting ultraviolet rays into the cooking cavity through the microwave exit window under the action of microwaves.

Thus, the surface wave generated by the surface wave generator can be used for exciting the ultraviolet generator to emit ultraviolet rays to disinfect and sterilize foods besides heating the foods in the cooking cavity, so that the utilization rate of microwaves can be improved.

In some embodiments, the cavity comprises a tray for carrying an object to be cooked and an enclosure enclosing the cooking chamber, the enclosure having the microwave exit window.

In certain embodiments, the enclosure comprises a side wall and a top wall connected to the side wall, the number of side walls being plural, the top wall having the microwave exit window.

In some embodiments, the tray and the enclosure are detachably connected, the enclosure is selectively covered on the tray or separated from the tray, a handle is arranged on the enclosure, the handle is arranged at the microwave exit window, and the ultraviolet generator is arranged on the handle.

In certain embodiments, the handle is made of a microwave shielding material.

In certain embodiments, the enclosure has a see-through window through which the cooking chamber is exposed from a plurality of different directions, wherein an included angle between the two directions is greater than or equal to 90 degrees, the see-through window being capable of shielding microwaves.

In some embodiments, the enclosure includes a side wall and a top wall connected to the top wall, the number of side walls being plural, at least two of the side walls and the top wall being plural formed with the see-through window.

In certain embodiments, the enclosure is made of a see-through material and is capable of shielding microwaves, and the cooking chamber is exposed through the enclosure.

In some embodiments, the number of perspective views is at least two, wherein the angle between the orientations of two of the perspective views is greater than or equal to 90 degrees.

In some embodiments, the surface wave generator is disposed below the tray.

In some embodiments, the cooking appliance includes a microwave source for providing energy to the surface wave generator to excite the surface wave generator to generate a surface wave.

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 structural view of a cooking appliance according to an embodiment of the present application;

fig. 2 is another schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 3 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 4 is a further schematic view of the structure of the cooking appliance according to 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 according to the embodiment of the present application;

fig. 13 is a further schematic view of the structure of the cooking appliance according to the embodiment of the present application;

fig. 14 is a schematic structural view of a surface wave generator according to an embodiment of the present application;

FIG. 15 is a schematic cross-sectional view of a surface wave generator of an embodiment of the present application;

fig. 16 is a surface field intensity distribution diagram of a surface wave generator according to an embodiment of the present application.

Description of main reference numerals:

cooking appliance 100, cavity 10, tray 11, enclosure 12, side wall 121, top wall 122, handle 13, cooking chamber 101, microwave exit window 102, see-through window 103, surface wave generator 20, bottom plate 21, medium 22, metal grid 23, ultraviolet generator 30, microwave source 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, a cooking appliance 100 according to an embodiment of the present application includes a cavity 10, a surface wave generator 20, and an ultraviolet generator 30. The cavity 10 has a cooking chamber 101 and a microwave exit window 102, the microwave exit window 102 being capable of passing microwaves. The surface wave generator 20 is for generating a surface wave that acts on a predetermined space of the cooking chamber 101, which is spaced apart from the microwave exit window 102. The ultraviolet generator 30 is located outside the cooking chamber 101 and is disposed corresponding to the microwave exit window 102, and the ultraviolet generator 30 is configured to emit ultraviolet rays into the cooking chamber 101 through the microwave exit window 102 under the action of microwaves.

Thus, the surface waves generated by the surface wave generator 20 can be used for exciting the ultraviolet generator 30 to emit ultraviolet rays to disinfect and sterilize foods besides heating the foods in the cooking chamber 101, so that the utilization rate of microwaves can be improved, and in addition, the ultraviolet generator 20 is arranged outside the cooking chamber 101 to prevent water vapor or oil smoke generated in the heating process from polluting the ultraviolet generator 30 so as to ensure the working efficiency of the ultraviolet generator.

Specifically, the ultraviolet generator 30 provided in the embodiment of the present application is directly excited by the microwaves generated by the surface wave generator 20 without power-on, so that the structure of the ultraviolet generator 30 is very simple. And the ultraviolet generator 30 does not need lamp tube ballast circuit supporting and is also not connected with a power line, thereby further simplifying the structure of the ultraviolet generator 30 and facilitating the use of the ultraviolet generator 30. In addition, the ultraviolet generator 30 adopts a lamp tube without filament, reduces the influence of frequent switching on and off on the service life of the ultraviolet generator 30, and is more suitable for short-time and intermittent sterilization of the cooking electric appliance.

In some embodiments, the ultraviolet generator 30 is detachably connected to the cavity 10, and the ultraviolet generator 30 can be removed from the cavity 10 when the function of ultraviolet sterilization is not required for the food of the cooking appliance 100 for a while. In some embodiments, the ultraviolet light generator 30 may be disposed on a support that is coupled to the chamber 10, the support being configured to carry the ultraviolet light generator. The microwave exit window 102 functions to expose the ultraviolet generator 30 to microwave excitation by the surface wave generator 20. The ultraviolet ray generator 30 has a characteristic of absorbing microwave energy emitted by the surface wave generator 20, and can automatically operate in the cooking chamber 101 without being connected to a power source, thereby effectively sterilizing.

The cooking appliance 100 provided in the embodiment of the present application heats the food in the cavity 10 by using the surface wave generated by the surface wave generator 20, and the surface wave can also be used for exciting the ultraviolet generator 30 to emit ultraviolet rays to sterilize the food. 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.

Referring to fig. 1 and 2, in some embodiments, the cavity 10 includes a tray 11 and an enclosure 12, the tray 11 being configured to carry an object to be cooked, the tray 11 and the enclosure 12 enclosing a cooking chamber 101, the enclosure 12 having a microwave exit window 102. Thus, when an object is placed on the tray 11, a surface wave can be generated by the surface wave generator 20, microwaves can pass through the tray 11 to reach the cooking chamber 101 to heat the object, and meanwhile, the microwaves can also reach the ultraviolet generator 30 through the microwave exit window 102, so that a machine room is formed. Specifically, the tray 11 is disposed above the surface wave generator 20 so that the surface wave generated by the surface wave generator 20 can rapidly heat the object on the tray 11.

Referring to fig. 3, in some embodiments, enclosure 12 may include side walls 121 and a top wall 122 connected to side walls 121, the number of side walls 121 being plural, top wall 122 having microwave exit window 102.

In this way, the side wall 121 may be connected with the top wall 122 to form the cooking chamber 101 together to heat food, and the microwave can also excite the ultraviolet generator 30 to work through the microwave exit window 102 of the top wall 122, and the ultraviolet rays are emitted into the cooking chamber 101 through the microwave exit window 102 by the ultraviolet rays, so that the cooking appliance 100 can also realize the disinfection of food in the process of heating food, and the user experience is improved.

The number of the side walls 121 may be three, four, five, six, or the like, which is not limited herein. In one embodiment, the cavity 10 of the cooking appliance 100 has a rectangular parallelepiped shape, and the enclosure 12 includes a top wall 122 and four side walls 121 connected in sequence, and the microwave exit window 102 is disposed on the top wall 122.

Referring to fig. 4, in some embodiments, the tray 11 and the enclosure 12 are detachably connected, the enclosure 12 is selectively covered on the tray 11 or separated from the tray 11, the enclosure 12 is provided with a handle 13, the handle 13 is disposed at the microwave exit window 102, and the ultraviolet generator 30 is disposed on the handle 13. Thus, the setting of the handle 13 is convenient for the user to take the tray 11 to realize the connection and the separation on the enclosure 12 and the tray 11, and simultaneously the handle 13 is used for installing the ultraviolet generator 30 and can avoid additionally setting up the support for installing the ultraviolet generator 30, thereby realizing the simplification of the structure of the cooking electric appliance 100.

It will be appreciated that when the shroud 12 is separated from the tray 11, the user places food on the tray 11 or removes food from the tray 11; when cooking food, the enclosure 12 can be covered on the tray 11 to form a cooking chamber 101 for heating the food, and the surface wave can also be used for exciting the ultraviolet generator 30 to emit ultraviolet rays for sterilizing the food.

It will be appreciated that during the cooking appliance 100 is in the process of cooking food, the enclosure 12 is in a state of being covered on the tray 11 to form the cooking chamber 101. When cooking is completed, the enclosure 12 can be removed from the tray 11 to allow separation of the enclosure 12 from the tray 11, and the handle 13 is provided to facilitate removal of food from the tray 11 by a user. It should be noted that, when the cooking appliance 100 is in the non-working state, the enclosure 12 is still covered on the tray 11, so as to avoid the tray 11 from being polluted or damaged.

In some embodiments, the handle 13 is made of a microwave shielding material. Thus, when the cooking appliance 100 is in a state of cooking food, the microwave can excite the ultraviolet generator 30 to work through the microwave exit window 102 on the enclosure 12 so as to disinfect the food, and the handle 13 can avoid the microwave from leaking to hurt the human body.

Specifically, part of the microwaves generated by the surface wave generator 20 excite the ultraviolet generator 30 through the microwave exit window 102 to emit ultraviolet foods for sterilization, and the other part of the microwaves are incident into the handle 13 through the microwave exit window 102, and the handle 13 is made of a microwave shielding material, so that the handle 13 can avoid the overflow of the microwaves. Wherein the microwave shielding material may be a metal. In one embodiment, the handle 13 is made of a metal material, and the ultraviolet generator 30 may be mounted on the handle 13 by magnetic attraction, so as to avoid punching the handle 13.

Referring to fig. 2 and 4, in some embodiments, the enclosure 12 has a perspective window 103, and the cooking chamber 101 is exposed from a plurality of different directions through the perspective window 103, wherein an included angle between the two directions is greater than or equal to 90 degrees, and the perspective window 103 is capable of shielding microwaves. 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 103, so that the observation field of view is wider, and the use experience of the user can be improved.

In particular, the see-through window 103 is made of a material that may be glass or plastic or other see-through material. And the light transmittance of the transparent window 103 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 103. In one embodiment, the see-through window 103 may include glass and an electromagnetic shielding layer disposed on a side of the glass adjacent to 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 from multiple directions through the perspective window 103 to the cooking chamber 101.

Referring to fig. 2 and 4, in some embodiments, the number of perspective windows 103 is at least two, wherein an angle between orientations of the two perspective windows 103 is greater than or equal to 90 degrees. In this way, the user can observe the cooking chamber 101 through the plurality of perspective windows 103, and when one of the moisture shields the perspective window 103, the user can also observe from the remaining perspective windows 103.

Referring to fig. 5, in one embodiment, the cooking appliance 100 is in a cuboid shape, the cavity 10 has two perspective windows 103, one of the perspective windows 103 faces to the right, the other perspective window 103 faces upward, and an angle between the two perspective windows 103 faces is 90 °.

Referring to fig. 6, in another embodiment, the cooking appliance 100 is cylindrical, and the cavity 10 has two perspective windows 103, wherein one perspective window 103 faces forward, the other perspective window 103 faces upward, and an angle between the two perspective windows 103 faces is 90 °.

Referring to fig. 7, in still another embodiment, the cooking appliance 100 is cylindrical, and the cavity 10 has three perspective windows 103, wherein one perspective window 103 faces to the left, the other perspective window 103 faces to the front, and the angle between the orientations of any two perspective windows 103 is 90 °, so that a user can observe the cooking chamber 101 through the three perspective windows 103, thereby improving the user experience.

Referring to fig. 2 and 8, in some embodiments, the enclosure 12 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 103. Thus, when one of the water vapor shields the perspective window 103, the user can observe the state in the cooking chamber 101 from the other perspective window 103, and the user can observe the state in the cooking chamber 101 from a plurality of angles through the perspective window 103 to improve the user experience.

Referring to fig. 9, in one embodiment, a top wall 122 and one of side walls 121 of cooking appliance 100 are formed with a perspective window 103, and a user can observe a state in cooking chamber 101 through top wall 122 and perspective window 103 on side wall 121.

Referring to fig. 10, in still another embodiment, a perspective window 103 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 103 are disposed opposite to each other.

Referring to fig. 11 and 12, in another embodiment, a perspective window 103 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 103 are vertically disposed.

Referring to fig. 13, in still another embodiment, perspective windows 103 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 103 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 103 may be smaller than the area of the side walls 121 and/or the top wall 122, as shown in fig. 12. In one embodiment, the side wall 121 and the top wall 122 of the cooking appliance 100 are provided with perspective windows 103, and a user can observe the heating state of food in the cooking chamber 101 through the perspective windows 103 on the side wall 121 and the top wall 122. The shape of the transparent window 103 may be circular, rectangular, or other shapes.

In some embodiments, the area of the perspective window 103 is equal to the area of the side wall 121 and/or the top wall 122, as shown in fig. 11 and 13, or the entire side wall 121 and/or the top wall 122 is the perspective window 103, 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.

Thus, on the premise of ensuring shielding of microwaves to avoid microwave leakage, the enclosure 12 made of the perspective material can expand the field of view of a user when observing the cooking chamber 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.

Referring to fig. 2, in some embodiments, a surface wave generator 20 is 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.

In some embodiments, the cooking appliance 100 can further include a microwave source 40, the microwave source 40 for providing energy to the surface wave generator 20 to excite the surface wave generator 20 to generate surface waves.

In this way, the microwave source 40 can excite the surface wave generator 20 to generate high-power electromagnetic waves and radiate uniform surface waves, improving the heating uniformity of the cooking appliance 100. Specifically, microwave source 40 is capable of exciting a uniform surface wave within cooking chamber 101 with surface wave generator 20, the surface wave residing in a structure comprising a medium 22 interface, and excited, metal-grounded medium 22 is capable of generating a surface wave at the surface of medium 22.

Referring to fig. 1, 14 and 15, in some embodiments, a surface wave generator 20 includes a substrate 21 and a medium 22 disposed on the substrate 21. In this way, the excited medium 22 of the metal base plate 21 can generate surface waves on the surface of the medium 22, so that radiation can be emitted into the cooking chamber 101.

Preferably, the thickness h of the medium 22 satisfies:

the width W of the medium 22 satisfies:

where λ is the wavelength of the antenna at the operating frequency in free space, ε _r Is the dielectric constant of the medium 22.

Specifically, the bottom plate 21 may be made of a metal material, and the medium 22 may be made of a material with a relatively high dielectric constant and high temperature resistance. The number of the mediums 22 may be plural, such as two, three, four or five, and the plurality of mediums 22 are arranged on the bottom plate 21 in an array manner, so that uniformity of electromagnetic energy of a transverse section and a longitudinal section in the cooking chamber 101 can be ensured, and heating uniformity of the cooking appliance 100 can be improved. Preferably, the spacing d between any two media 22 satisfies:

in some embodiments, the medium 22 may be provided with metal bars 23, where the metal bars 23 may abut against two sides of the medium 22, and the width of the metal bars 23 is greater than that of the medium 22, so as to prevent surface waves that are not absorbed by food during heating from radiating from two ends of the medium 22, and improve energy utilization efficiency.

As shown in fig. 13, the structure shown in fig. 15 was simulated with the cooking chamber 101 in an empty condition, resulting in a field strength distribution within the cavity 10 at different frequencies. As can be seen from fig. 16, under the condition that the dc power is 1W, the maximum field intensity in the cooking chamber 101 is 100V/m, and along the height direction of the cooking electric appliance 100, the maximum field intensity is mainly distributed near the periphery of the surface wave launcher and is relatively uniform, so that uniform heating can be achieved in the embodiment of the present application.

Referring to fig. 1, in some embodiments, a cooking appliance 100 includes a microwave source 40, the microwave source 40 configured to provide energy to a surface wave generator 20 to excite the surface wave generator 20 to generate a surface wave. In this way, the microwave source 40 can excite the surface wave generator 20 to generate high-power electromagnetic waves and radiate uniform surface waves, improving the heating uniformity of the cooking appliance 100. Specifically, microwave source 40 is capable of exciting a uniform surface wave within cooking chamber 101 with surface wave generator 20, the surface wave residing in a structure comprising a medium 22 interface, and excited, metal-grounded medium 22 is capable of generating a surface wave at the surface of medium 22.

In one embodiment, microwave source 40 may include a waveguide horn antenna and a magnetron. The waveguide horn antenna includes a horn and a rectangular feed waveguide connected to the horn. The magnetron is disposed on a rectangular feed waveguide, and the rectangular feed waveguide is used for feeding. The medium 22 of the surface wave generator 20 is connected to a horn. The waveguide horn antenna can transmit and radiate electromagnetic waves with larger power, has good radiation characteristics and obtains larger gain.

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 (11)

1. A cooking appliance, comprising:

a cavity having a cooking chamber and a microwave exit window, the microwave exit window being capable of passing microwaves;

a surface wave generator for generating a surface wave that acts on a predetermined space of the cooking chamber, the predetermined space being spaced apart from the microwave exit window;

the ultraviolet generator is positioned outside the cooking cavity and corresponds to the microwave exit window, and the ultraviolet generator is used for emitting ultraviolet rays into the cooking cavity through the microwave exit window under the action of microwaves.

2. The cooking appliance of claim 1, wherein the cavity comprises a tray for carrying an object to be cooked and an enclosure enclosing the cooking chamber, the enclosure having the microwave exit window.

3. The cooking appliance of claim 2 wherein the enclosure comprises a side wall and a top wall connected to the side wall, the number of side walls being plural, the top wall having the microwave exit window.

4. The cooking appliance of claim 2, wherein the tray is detachably connected to the enclosure, the enclosure being selectively covered on or separated from the tray, a handle being provided on the enclosure, the handle being provided at the microwave exit window, and the ultraviolet generator being provided on the handle.

5. The cooking appliance of claim 2, wherein the handle is made of a microwave shielding material.

6. The cooking appliance of claim 2, wherein the enclosure has a perspective window through which the cooking chamber is exposed from a plurality of different directions, wherein an included angle between the two directions is greater than or equal to 90 degrees, the perspective window being capable of shielding microwaves.

7. The cooking appliance of claim 6, wherein the enclosure includes side walls and a top wall connected to the top wall, the number of side walls being plural, at least two of the side walls and the top wall being plural, the perspective window being formed.

8. The cooking appliance of claim 6, wherein the enclosure is made of a see-through material and is capable of shielding microwaves, the cooking chamber being exposed through the enclosure.

9. The cooking appliance of claim 6, wherein the number of perspective views is at least two, wherein an angle between orientations of two of the perspective views is greater than or equal to 90 degrees.

10. The cooking appliance of claim 2, wherein the surface wave generator is disposed below the tray.

11. The cooking appliance of claim 1, comprising a microwave source for providing energy to the surface wave generator to excite the surface wave generator to produce a surface wave.