WO2023173996A1 - Cooking device - Google Patents

Abstract

A cooking device (100). The cooking device (100) comprises an inner housing (110), wherein an opening (117) and a cavity (115) are formed in the inner housing (110); an outer edge of the opening (117) is provided with a first enamel layer (121); an inner wall of the cavity (115) is provided with a second enamel layer (122); the thickness of the first enamel layer (121) is within a first thickness range, and the thickness of the second enamel layer (122) is within a second thickness range; the lower limit value of the first thickness range is greater than or equal to 100 microns, and the upper limit value of the first thickness range is less than or equal to 270 microns; and the lower limit value of the second thickness range is greater than or equal to 100 microns, and the upper limit value of the second thickness range is less than or equal to 350 microns.

Description

cooking equipment

priority information

The present invention requests the priority and rights of the patent applications with patent application numbers 202210253810.2 and 202220567222.1 submitted to the State Intellectual Property Office of China on March 15, 2022, and the full texts thereof are incorporated herein by reference.

Technical field

The present invention relates to the technical field of cooking equipment, and in particular to a cooking equipment.

Background technique

Enamel is a composite material in which inorganic glassy materials are melted and condensed on the base metal and firmly combined with the metal. It has high hardness, high temperature resistance, corrosion resistance, scratch resistance, non-stick oil, and is easy to use. Due to its cleanliness and high radiation coefficient, it is widely used in household appliances.

Contents of the invention

The present invention provides a cooking device.

A cooking device provided by an embodiment of the present invention includes:

The inner shell is formed with an opening and a cavity. The outer edge of the opening is provided with a first enamel layer. The inner wall of the cavity is provided with a second enamel layer. The thickness of the first enamel layer is within a first thickness range. Within, the thickness of the second enamel layer is within the second thickness range;

The lower limit of the first thickness range is greater than or equal to 100 microns, the upper limit of the first thickness range is less than or equal to 270 microns, the lower limit of the second thickness range is greater than or equal to 100 microns, and the The upper limit of the second thickness range is less than or equal to 350 microns.

In the above-mentioned cooking equipment, the thickness of the first enamel layer and the second enamel layer is at least greater than 100 microns, which can prevent the enamel layer on the surface of the inner casing from being too thin and causing the bottom to be exposed, and corresponding enamel layers are provided according to different parts of the inner casing. The thickness is such that the thickness of the first enamel layer does not exceed 270 microns, and the thickness of the second enamel layer does not exceed 350 microns, which can prevent the enamel layer from being too thick and affecting the adhesion of the enamel layer.

In some embodiments, when the hardness of the enamel is greater than the first preset hardness, the lower limit of the first thickness range is greater than or equal to 100 microns, and the lower limit of the second thickness range is greater than or equal to 100 microns.

In some embodiments, when the hardness of the enamel is less than the second preset hardness, the first thickness range The lower limit value is greater than or equal to 120 microns, and the lower limit value of the second thickness range is greater than or equal to 120 microns.

In some embodiments, the lower limits of the first thickness range and the second thickness range are both 150 microns, and the upper limits of the first thickness range and the second thickness range are both 200 microns. .

In certain embodiments, the cooking device includes:

The working part, when in a working state, can form a cooking environment in the cavity.

In some embodiments, the work unit includes:

The microwave generator can emit microwaves into the cavity.

In some embodiments, the work unit includes:

A heating element is provided in the cavity and can heat the cavity.

In some embodiments, the work unit includes:

A hot air motor is arranged outside the cavity and can pass hot air into the cavity.

In some embodiments, the work unit includes:

The steam generating component is connected to the cavity and can deliver steam into the cavity.

In certain embodiments, the cooking device includes:

The cooling part is arranged close to the working part and can form a cooling channel around the working part.

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

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

Figure 1 is a partial structural schematic diagram of a cooking device according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of the inner shell according to the embodiment of the present invention;

Figure 3 is a schematic side view of the inner housing according to the embodiment of the present invention;

4-6 are partial structural diagrams of the cooking equipment according to the embodiment of the present invention.

Description of main component symbols:

Cooking equipment 100, shell plate 101;

Inner shell 110, plate surface 111, front plate 112, points 113, path 114, cavity 115, grid structure 116, opening 117;

The first enamel layer 121 and the second enamel layer 122;

Working part 130, microwave generating part 131, heating part 132, first heating pipe 133, second heating pipe 134, hot air motor 135, third heating pipe 136, steam generating part 137, water storage tank 138, nozzle 139;

Cooling part 140, cooling channel 141, first air duct 142, first air inlet 1421, first air outlet 1422, second air duct 143, second air inlet 1431, second air outlet 1432, third air duct 144, The third air inlet 1441 and the third air outlet 1442.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and are not to be construed as limitations of the present invention.

The following disclosure provides many different embodiments or examples of various structures for implementing the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numbers and/or reference letters in different examples, such repetition being for purposes of simplicity and clarity and does not itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Please refer to FIGS. 1 and 2 , an embodiment of the present invention provides a cooking device 100 including an inner housing 110 . Specifically, in the embodiment shown in FIG. 2 , the inner housing 110 includes a plurality of plate surfaces 111 , the number of the plate surfaces 111 is multiple, and all the plate surfaces 111 surround each other to form a cavity 115 located inside the inner housing 110 , the cavity 115 is semi-enclosed, thereby forming an opening 117 located on the inner housing 110 and communicating with the cavity 115 . For the cooking device 100, the cavity 115 located inside the inner housing 110 is used to hold food for cooking. In the embodiment shown in FIG. 1 , the cooking device 100 includes a plurality of shell plates 101 . The plurality of shell plates 101 are disposed on the outer side of the inner shell 110 to form an outer shell of the cooking device 100 , thereby functioning to protect the inner shell 110 . As well as the protection and containment of electrical components inside the cooking device 100 . Part of the shell plate 101 may be fixed or relatively movable. The relatively movable shell plate 101 may be a door body of the cooking device 100, so that the door body can movable open and close the opening 117.

In the embodiment shown in FIG. 2 , the inner housing 110 further includes a front plate 112 , which has a hollow frame structure. The frame structure of the front plate 112 is arranged along the edge of the opening 117 , thereby forming the outer edge of the opening 117 .

On the basis of the above, the outer surface of the opening 117 and the inner wall surface of the cavity 115 are both provided with enamel. Among them, the enamel located on the outer surface of the opening 117 forms the first enamel layer 121, and the enamel located on the inner wall surface of the cavity 115 is provided with a third enamel layer. Second enamel layer 122. Both the first enamel layer 121 and the second enamel layer 122 have corresponding thicknesses.

It can be understood that in related technologies, although enamel is widely used in household appliances and other equipment, the processing technology requirements for enamel are relatively high. In order for the cooking device 100 to achieve the effect of cooking food, it needs to be heated to a higher temperature, so that the cavity 115 is often in a high temperature environment.

As for the enamel layer, if the enamel layer is too thin, it will easily cause the board surface 111 to which it is attached to be exposed, which may easily lead to the problem of bottom exposure and cause the inner shell 110 to rust; if the enamel layer is too thick, then It is easy to mix a large number of irregular bubbles during the sintering of enamel, which in turn affects the adhesion of the enamel layer. Setting a thicker enamel layer means more sintering time is required. Insufficient sintering time can also easily lead to poor adhesion of the enamel layer.

Specifically, the thicknesses of the first enamel layer 121 and the second enamel layer 122 can be selected within corresponding thickness ranges. The thickness range corresponding to the first enamel layer 121 is the first thickness range, and the thickness range corresponding to the second enamel layer 122 is the second thickness range. The first thickness range and the second thickness range each have an upper limit value and a lower limit value. The lower limit of the first thickness range and the lower limit of the second thickness range can be the same, so as to ensure that both the first enamel layer 121 and the second enamel layer 122 have a certain thickness and avoid bottom exposure. The upper limit of the first thickness range is smaller than the upper limit of the second thickness range, so that the second enamel layer 122 has a relatively large adhesion, which can meet the thermal expansion needs of the second enamel layer 122 and avoid porcelain explosion. The first enamel layer 121 is further away from the inside of the cavity 115 than the second enamel layer 122, and can be set to be relatively thin while ensuring that porcelain explosion is avoided. Of course, in other embodiments, the upper limit of the first thickness range may also be equal to the upper limit of the second thickness range.

In some such embodiments, the lower limit (microns) of the first thickness range may be 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240 , 250, 260, 270, the upper limit value (micron) of the first thickness range can be 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270.

That is to say, the first thickness range can be a value of 100 microns to 270 microns, and can be a sub-range between 100 microns and 270 microns. Among them, the first enamel layer 121 with a thickness of 100 microns can meet the thermal expansion needs on the front plate 112, and the first enamel layer 121 with a thickness of 270 microns can meet the needs of sufficient adhesion and structural elasticity on the front plate 112, and Helps reduce the possibility of porcelain explosion.

In some such embodiments, the lower limit value (microns) of the second thickness range may be 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240 , 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, the upper limit value (micron) of the second thickness range can be 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350.

That is to say, the second thickness range can be a value of 100 microns to 350 microns, and can be a sub-range between 100 microns and 350 microns. Among them, the second enamel layer 122 with a thickness of 100 microns can meet the thermal expansion needs in the cavity 115, and the second enamel layer 122 with a thickness of 350 microns can meet the needs of sufficient adhesion and structural elasticity in the cavity 115, and Helps reduce the possibility of porcelain explosion.

In the above-mentioned cooking device 100, the thickness of the first enamel layer 121 and the second enamel layer 122 is at least greater than 100 microns, which can prevent the enamel layer on the surface of the inner shell 110 from being too thin and causing the bottom to be exposed. According to different parts of the inner shell 110 The corresponding thickness of the enamel layer is set so that the thickness of the first enamel layer 121 does not exceed 270 microns, and the thickness of the second enamel layer 122 does not exceed 350 microns, which can prevent the enamel layer from being too thick and affecting the adhesion of the enamel layer.

In addition, in order to ensure that the first enamel layer 121 can meet the corresponding thickness standard, in the embodiment shown in FIG. 2 , the front plate 112 includes a plurality of points 113 , and all the points 113 are located on the front plate 112 sequentially along the surrounding opening 117 , some of the points 113 are located in the corner areas of the front panel 112 , and the other part of the points 113 are located in the middle area of the corresponding frame on the frame structure of the front panel 112 . When the first enamel layer 121 is attached to the front plate 112, the enamel layer will be provided around the point 113 until the thickness of the enamel layer reaches the required thickness.

On the basis of the above, in the embodiment shown in FIG. 2 , the front panel 112 also includes a plurality of paths 114 , and the two ends of each path 114 correspond to one of two adjacent points 113 in the direction surrounding the opening 117 . In other words, a path 114 is formed between two adjacent points 113 , and the path 114 is located on the frame of the frame structure of the front panel 112 . When the thickness of the first enamel layer 121 on two adjacent points 113 reaches the required thickness, the first enamel layer 121 is attached on the path 114 between the two adjacent points 113 until the path The thickness of the first enamel layer 121 on 114 also reaches the required thickness.

That is to say, in the actual processing technology, by first attaching the enamel layer to all the points 113 on the front plate 112, and then attaching the enamel layer to the paths 114 between the points 113, the points 113 can be made The enamel layer on the path 114 can form a thickness reference for the enamel layer on the path 114, which facilitates the processing process of attaching the first enamel layer 121 to the front plate 112 as a whole.

In addition, in order to ensure that the second enamel layer 122 can meet the corresponding thickness standard, please refer to Figures 2 and 3. In the embodiment shown in Figure 3, the opening 117 of the cavity 115 faces downward as a whole, so that the inner shell 110 Presented in a hanging state. For the inner wall of the cavity 115, the adhesion processing of the second enamel layer 122 can be achieved in sequence: degreasing; multi-channel water washing; drying; electrostatic powder spraying; powder suction at the core; hanging; sintering; lower hanging; and inspection. Among them, the inner shell 110 is first set to the state as shown in Figure 3, which can avoid that during the processing process, the enamel layer attached to the inner wall of the cavity 115 is not fully adhered to the inner wall of the cavity 115, and will be affected by gravity. The enamel layer is driven to move to the bottom of the cavity 115 so that the enamel layer on the inner wall at the bottom of the cavity exceeds the second thickness range. The core portion may include an inner wall area of the cavity 115 that is prone to be exposed to a high temperature environment for a long time, or may include an area with more concave and convex structures on the inner wall of the cavity 115 . In one embodiment, the thickness control of the enamel layer can be This is achieved by adjusting the duration of electrostatic powder spraying or adjusting the duration of powder suction in the core area.

In some embodiments, when the hardness of the enamel is greater than the first preset hardness, the lower limit of the first thickness range is greater than or equal to 100 microns, and the lower limit of the second thickness range is greater than or equal to 100 microns.

Specifically, in one embodiment, the enamel with a hardness greater than the first preset can be a black metal enamel. It can be understood that the hardness of the black metal enamel is relatively large and its brittleness value is relatively low, so that the first enamel layer can be 121 and the second enamel layer 122 are provided relatively thinly. Of course, when the enamel is black metal enamel, the thickness of the enamel layer can also be greater than 100 microns.

In some embodiments, when the hardness of the enamel is less than the second preset hardness, the lower limit of the first thickness range is greater than or equal to 120 microns, and the lower limit of the second thickness range is greater than or equal to 120 microns.

Specifically, in one embodiment, the enamel with a hardness greater than the first preset can be non-ferrous metal enamel. It can be understood that the hardness of non-ferrous metal enamel is relatively small and its brittleness value is relatively high, so that the first enamel layer can be 121 and the second enamel layer 122 are provided relatively thickly. Of course, when the enamel is black metal enamel, the thickness of the enamel layer can also be greater than 100 microns. Non-ferrous metal enamels can include blue and white dot enamels.

In addition, based on the above embodiments, in some embodiments, the first thickness range and the second thickness range may have the same value range, that is, the lower limit of the first thickness range and the second thickness range The lower limit of the range may be the same, and the upper limit of the first thickness range and the upper limit of the second thickness range may also be the same. Preferably, in one embodiment, the lower limit of the first thickness range and the lower limit of the second thickness range are both 150 microns, and the upper limit of the first thickness range and the upper limit of the second thickness range are both 150 microns. 200 microns, so that the first enamel layer 121 and the second enamel layer 122 can be processed with the same parameter standards while meeting the thermal expansion requirements to reduce porcelain explosion and having sufficient adhesion on the surface of the inner shell 110 process to reduce unnecessary parameter adjustments and corresponding inspection steps.

In certain embodiments, cooking device 100 includes a working portion 130 . Specifically, the working part 130 will enter the working state when the cooking device 100 starts to work, and the working part 130 can form a cooking environment in the cavity 115 in the working state. The cooking environment is an environment formed for heating and cooking food. The cooking environment is formed in different ways depending on the type of the working part 130 .

Please refer to FIG. 1 and FIG. 4 . In some embodiments, the working part 130 includes a microwave generating member 131 . Specifically, in the illustrated embodiment, the microwave generator 131 is disposed on the top of the outer wall of the inner housing 110 . When a cooking environment needs to be formed in the cavity 115, the microwaves generated by the microwave generator 131 can be conducted along the conduit connected to the cavity 115, so that the microwaves can be emitted into the cavity 115 and fill the cavity. 115. The water molecules in the food will be polarized in the electromagnetic field formed by the microwave, thereby achieving the effect of heating and cooking the food. The microwave generator 131 may be a magnetron.

Please refer to FIGS. 1 and 5 . In some embodiments, the working part 130 includes a heating element 132 . Specifically, in the illustration In the embodiment, the heating element 132 can generate heat when powered on, so that the heating element 132 can heat the cavity 115 to cook food.

More specifically, in the embodiment shown in FIG. 5 , the heating element 132 includes a first heating tube 133 and a second heating tube 134 . The first heating tube 133 is disposed near the top of the cavity 115 , and the second heating tube 134 is disposed near the bottom of the cavity 115 . The first heating tube 133 can heat the space in the top area of the cavity 115, and the second heating tube 134 can heat the space in the bottom area of the cavity 115, so that a high-temperature environment is formed in the cavity 115, so that the space in the cavity 115 can be heated. Provides even heating.

Please refer to FIGS. 1 , 5 and 6 . In some embodiments, the working part 130 includes a hot air motor 135 . Specifically, in the embodiment shown in FIGS. 5 and 6 , the cooking device 100 includes a third heating tube 136 , which is disposed on the plate surface 111 opposite to the opening 117 and located outside the cavity 115 . , the surface of the plate 111 opposite to the opening 117 has a grid structure 116, and the hot air motor 135 is located outside the cavity 115 and is disposed facing the grid structure 116. When the third heating tube 136 starts to heat the surrounding air, the function of the hot air motor 135 can form the heated air into an airflow, and the airflow flows along the grid structure 116 into the cavity 115, so that the third heating tube can be heated. The heat generated by 136 is brought into the cavity 115, thereby heating the space in the cavity 115.

Please refer to FIGS. 1 and 6 . In some embodiments, the working part 130 includes a steam generating member 137 . Specifically, in the illustrated embodiment, the cooking device 100 also includes a water storage bin 138, a spout 139 and a water pump (not shown). The water storage bin 138 is connected to the steam generating member 137 through a pipeline, and the water pump is arranged to communicate with the water storage bin 138 and the steam generating member. on the pipeline between the parts 137, and can conduct and seal the pipeline. The nozzle 139 is connected with the steam generating member 137. When the steam generating member 137 generates steam, the steam can flow into the cavity 115 through the nozzle 139, so that the steam can be transported into the cavity 115. Since the steam may have high temperature, a high-temperature cooking environment may be formed in the cavity 115 . The steam generating component 137 may be a flow channel steam generator.

Referring to FIGS. 1 and 4 , in some embodiments, the cooking device 100 includes a cooling portion 140 . Specifically, in the embodiment shown in FIG. 4 , the cooling part 140 may have a plurality of cooling channels 141 , and the plurality of cooling channels 141 include a first air channel 142 , a second air channel 143 and a third air channel 144 . The first air channel 142 has a first air inlet 1421 and a first air outlet 1422. The second air channel 143 has a second air inlet 1431 and a second air outlet 1432. The third air channel 144 has a third air inlet 1441 and a third air outlet 1442.

In the case where the working part 130 includes the microwave generator 131 in Figure 4, the third air duct 144 is provided around the microwave generator 131, and the third air inlet 1441 and the third air outlet 1442 are located on the same side of the microwave generator 131. This allows the air to maximize heat exchange with the microwave generator 131 when it enters the third air inlet 1441 and flows along the third air duct 144 to the third outlet 1442, thereby improving the effect of the third air duct 144 on microwave generation. The cooling effect of piece 131.

In addition, in the embodiment shown in FIG. 4 , the first air duct 142 and the second air duct 143 can cool other electrical components of the cooking device 100 (such as other working parts 130 ), and the first air duct 142 , The second air channel 143 and the third air channel 144 can be interlaced with each other, which is beneficial to forming a cooling system of the composite path 114 and improving cooling efficiency.

In addition, please refer to Figures 4 to 6. For the cooking device 100, in one embodiment, the working part 130 also includes a microwave generator 131, a heating element 132, a hot air motor 135 and a steam generator 137, and can be combined with Different working parts 130 are used to achieve different cooking effects. Specifically, through the steam generating element 137 and the heating element 132, the coupling of the steam function and the baking function can be realized, so that the food can be baked well without making the food taste dry; through the steam generating element 137 and the microwave generation The component 131 can realize the coupling of the steam function and the microwave function, so that the cooking device 100 has cooking effects such as fast steaming; through the steam generating component 137, the microwave generating component 131 and the heating component 132, the steam function, the microwave function and the baking function can be realized The coupling can greatly improve the efficiency and enhance the cooking effect; through the hot air motor 135 and the heating element 132, or through the hot air motor 135 and the steam generating element 137, the steam function or baking function can be enhanced, making the cooking effect better.

In the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be in conjunction with the description of the embodiments. or examples describe specific features, structures, materials, or characteristics that are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

In the present invention, unless otherwise expressly provided and limited, the term "above" or "below" a first feature of a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. The first characteristic is in the The two features "below", "below" and "below" include that the first feature is directly below or diagonally below the second feature, or simply means that the horizontal height of the first feature is smaller than that of the second feature.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connect, or connect in one piece. The connection can be mechanical or electrical. It can be a direct connection or an indirect connection through an intermediary. It can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

A cooking device, characterized in that it includes: The inner shell is formed with an opening and a cavity. The outer edge of the opening is provided with a first enamel layer. The inner wall of the cavity is provided with a second enamel layer. The thickness of the first enamel layer is within a first thickness range. Within, the thickness of the second enamel layer is within the second thickness range; The lower limit of the first thickness range is greater than or equal to 100 microns, the upper limit of the first thickness range is less than or equal to 270 microns, the lower limit of the second thickness range is greater than or equal to 100 microns, and the The upper limit of the second thickness range is less than or equal to 350 microns. The cooking device according to claim 1, wherein when the hardness of the enamel is greater than the first preset hardness, the lower limit of the first thickness range is greater than or equal to 100 microns, and the second thickness range is greater than or equal to 100 microns. The lower limit of the thickness range is greater than or equal to 100 microns. The cooking device according to claim 1 or 2, wherein when the hardness of the enamel is less than the second preset hardness, the lower limit of the first thickness range is greater than or equal to 120 microns, and the The lower limit value of the second thickness range is greater than or equal to 120 microns. The cooking device according to any one of claims 1 to 3, wherein the lower limits of the first thickness range and the second thickness range are both 150 microns, and the first thickness range and the second thickness range have a lower limit of 150 microns. The upper limit of the second thickness range is 200 microns. The cooking equipment according to any one of claims 1 to 4, characterized in that the cooking equipment includes: The working part, when in a preset working state, can form a cooking environment in the cavity. The cooking device according to claim 5, characterized in that the working part includes: The microwave generator can emit microwaves into the cavity. The cooking device according to claim 5 or 6, characterized in that the working part includes: A heating element is provided in the cavity and can heat the cavity. The cooking device according to any one of claims 5 to 7, characterized in that the working part includes: A hot air motor is arranged outside the cavity and can pass hot air into the cavity. The cooking device according to any one of claims 5 to 8, characterized in that the working part includes: The steam generating component is connected to the cavity and can deliver steam into the cavity. The cooking equipment according to any one of claims 5 to 9, characterized in that the cooking equipment includes: The cooling part is arranged close to the working part and can form a cooling channel around the working part.