CN220327309U - Cover and cooking utensil - Google Patents

Abstract

The utility model discloses a cover body and a cooking utensil, wherein the cover body comprises a lining, a top heating device, a visual assembly and a cover plate, and the top heating device is connected to the lining; the visual assembly comprises at least two visual components which are arranged in a stacking way and are arranged at the lower side of the top heating device, and the at least two visual components are all constructed into transparent or semitransparent components; the cover plate is arranged on the lower side of the visual component and is detachably connected to the lining. According to the utility model, at least two visual components can form a double-layer or multi-layer visual structure, the visual structure is more reliable, and the visual component positioned above the lowest visual component is not easy to break, so that even if the visual component positioned at the lowest layer breaks due to accidents, a user cannot touch the top heating device serving as an electrified body to generate electric shock risks. Therefore, the structural reliability of the visible area can be improved, the risk of electric shock of a user is eliminated, and the use safety of the product is improved.

Description

Cover and cooking utensil

Technical Field

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

Background

A cooking appliance such as an electric cooker is known in which a cover body is provided with a heating device such as an electromagnetic heating device including a coil, a far infrared heating device such as a far infrared tube, and the like. The lower sides of the heating devices are generally provided with transparent visual pieces made of glass or plastic materials so as to isolate the heating devices from the external environment and avoid users from directly touching the heating devices.

The transparent visual element is usually only provided with one, when the transparent visual element breaks, a user can touch the heating device serving as the charged body, the risk of electric shock is generated, and the use safety of the product is low.

Accordingly, there is a need for a cover and a cooking appliance that at least partially address the above issues.

Disclosure of Invention

A series of concepts in a simplified form are introduced in the summary of the utility model, which will be described in further detail in the detailed description. The summary of the utility model is not intended to limit the critical and essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

In order to at least partially solve the above problems, the present utility model provides a cover for a cooking appliance, the cover comprising:

a lining;

a top heating device connected to the liner;

a visual assembly comprising at least two visual components arranged one above the other and provided on the underside of the top heating device, each of the at least two visual components being configured as a transparent or translucent member; and

and the cover plate is arranged on the lower side of the visual assembly and is detachably connected to the lining.

According to the scheme, at least two visual components can form a double-layer or multi-layer visual structure, the visual structure is more reliable, and the visual component positioned on the lowest visual component is not easy to break, so that even if the visual component positioned on the lowest visual component breaks due to accidents, a user can not touch the top heating device serving as an electrified body to generate electric shock risks. Therefore, the structural reliability of the visible area can be improved, the risk of electric shock of a user is eliminated, and the use safety of the product is improved.

Optionally, the visual assembly includes a first visual component and a second visual component, the second visual component being located on the underside of the first visual component and in surface-to-surface contact therewith.

According to the scheme, a double-layer visual structure can be formed, the first visual component positioned on the upper side is protected by the second visual component and is not easy to break, and the risk of electric shock caused by accidental breakage of the second visual component by a user is avoided.

Optionally, the second visual component has the same configuration and radial dimensions as the first visual component;

according to the scheme, the two visual components can be conveniently arranged in the same assembly mode, the assembly operation is simple, and the efficiency is high.

And/or the thickness of the second visual component is greater than or equal to the thickness of the first visual component.

According to the scheme, the second visual component can better protect the first visual component from being broken, and the reliability of the double-layer visual structure is improved.

Optionally, the material of at least one of the second visual component and the first visual component is transparent or translucent glass, or the material of at least one of the second visual component and the first visual component is transparent or translucent plastic.

According to the scheme, the visual component can be made of glass or plastic which is low in cost and easy to obtain, and the material cost is reduced.

Optionally, the material of the first visual component is transparent or semitransparent plastic, and the material of the second visual component is transparent or semitransparent glass.

According to the scheme, the plastic is softer and is not easy to break, and the visual component of the plastic is arranged on the upper side of the visual component of the glass, so that the reliability of the visual structure can be improved.

Optionally, the inside lining is equipped with the opening, top heating device locates the upside of inside lining, visual subassembly is installed the opening part, the lid still includes the opening sealing washer, the opening sealing washer has annular recess and passes through the recess cover is located visual subassembly's periphery.

According to the scheme, by means of the opening sealing ring, gaps between the inner liner and the visible component can be effectively sealed, and damage to the top heating device caused by external steam, liquid and the like entering the inside of the cover body through the openings of the inner liner and the gaps between the inner liner and the visible component is avoided.

Optionally, the lining is provided with a concave mounting table, the mounting table forms the edge of the opening, and the visual assembly sleeved with the opening sealing ring is lapped on the mounting table.

According to this scheme, visual subassembly is upwards supported by the mount table, and the clearance between visual subassembly of opening sealing washer and the mount table is sealed, and the assembly structure of visual subassembly is simple, the manufacturing of being convenient for.

Optionally, the top heating device includes wire reel and top coil, the wire reel is located the upside of inside lining and be connected to the inside lining, the top coil twine in the downside of wire reel, visual subassembly clamp in the wire reel with between the mount pad, the apron is metal component.

According to the scheme, the alternating magnetic field generated by the top coil can act on the metal cover plate below, so that the cover plate generates heat. The heat generated by the cover plate is transferred to the inner pot to heat the food in the inner pot.

Optionally, at least one of the mounting table and the wire spool is provided with a bead, the split seal ring has an upper seal portion and a lower seal portion forming the groove, at least one of the upper seal portion and the lower seal portion is provided with a cavity facing the visual component,

the concave cavity of the upper sealing part of the opening sealing ring corresponds to the convex rib of the wire spool, and the concave cavity of the lower sealing part of the opening sealing ring corresponds to the convex rib of the mounting table.

According to the scheme, the concave cavity on the opening sealing ring and the convex rib on the mounting table or the wire spool can increase the compression or deformation of the opening sealing ring, so that the sealing reliability is improved; for the scheme of setting up cavity and protruding muscle simultaneously, protruding muscle can make the opening sealing washer produce great compression volume in cavity department, realizes pressing fit, further improves sealing reliability.

Optionally, the top heating device is at least one of a resistance heating device, an infrared heating device, an electromagnetic heating device;

according to the present aspect, heat may be radiated to the cooking space using resistance heating, infrared rays may be radiated to the cooking space to heat, and/or electromagnetic heating may be used to radiate heat to the cooking space.

And/or the thickness of the visual component is greater than or equal to 0.3mm.

According to the scheme, the visual component with the thickness of more than 0.3mm is better in structural strength and is not easy to break.

According to another aspect of the present utility model, there is provided a cooking appliance comprising the lid and the pot according to any one of the above aspects, the lid being openably and closably provided to the pot to form a cooking space between the lid and the pot.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model.

In the accompanying drawings:

fig. 1 is a sectional view of a cover according to a preferred embodiment of the present utility model;

fig. 2 is an exploded perspective view of the cover shown in fig. 1;

FIG. 3 is an exploded perspective view of the visual assembly shown in FIG. 2;

fig. 4 is a partially enlarged view of the cover shown in fig. 1.

Reference numerals illustrate:

1 cover 2 lining

3-face cover 4 cover plate

5 mount table 6 screw column

7 opening 10 top heating device

11 wire reel 12 top coil

13 fixing portion 20 visual assembly

21 visual component 22 first visual component

23 second visual component 24 first through hole

25 second through holes 26 third through holes

27 fourth through hole 30 open seal ring

31 groove 32 upper seal part

33 lower seal 34 side seal

35 concave cavity 36 convex rib

41 magnetism isolating piece 42 temperature measuring assembly

43 steam component

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

In the following description, a detailed description will be given for the purpose of thoroughly understanding the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are familiar to those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for illustrative purposes only and are not limiting.

Exemplary embodiments according to the present utility model will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.

The utility model provides a cooking appliance which comprises a pot body and a cover body 1 (shown in figure 1). The pot body is provided with a cylindrical inner pot containing part. The inner pot can be fixedly arranged at the inner pot containing part, or can be freely placed in the inner pot containing part or taken out from the inner pot containing part, so that the inner pot can be conveniently cleaned. The inner pot is typically made of a metallic material and has a circular opening in its upper surface for holding the material to be heated, such as rice, soup, etc. The pot body comprises a heating device for heating the inner pot so as to heat the inner pot.

It is understood that the cooking appliance according to the present utility model may be an electric rice cooker, an electric pressure cooker or other cooking appliances, and the cooking appliance may have various functions of cooking porridge or the like in addition to the function of cooking rice.

The cover 1 has a shape substantially corresponding to the pot. The cover 1 is arranged on the cooker body in an openable and closable manner, specifically, is pivoted to the cooker body through a pivot shaft, and can freely pivot between a covering position and an opening position relative to the cooker body around the pivot axis where the pivot shaft is located, so as to facilitate covering and opening of the cooker body. When the cover body 1 is covered on the cooker body, the cover body covers the inner cooker and forms a cooking space with the inner cooker. The lid 1 also typically has a port sealing ring, which may be made of e.g. a rubber material, arranged between the lid 1 and the inner pot for sealing the cooking space when the lid 1 is in the closed state.

As shown in fig. 1 and 2, the cover 1 may include an inner liner 2, a cover 3 located on an upper or outer side of the inner liner 2, and a cover plate 4 located on a lower or inner side of the inner liner 2. The face cover 3 may be attached to the liner 2 by other suitable means such as snap or fastener fastening. The cover plate 4 may be removably attached to the liner 2 by other suitable means, such as snap-fit or fastener fastening, to facilitate removal of the cover plate 4 for cleaning.

It is to be noted that directional terms used herein to describe the respective components, portions, etc. of the cover 1, such as "upper", "lower", "above", "below", "upward", "downward", etc., are with respect to the cover 1 in a horizontally placed and erected state. The directional terms "inwardly", "outwardly", "inside", "outside" and the like, unless otherwise limited, refer to "inside" as being closer to the center of the cap 1 and "outside" as being farther from the center of the cap 1.

The cover 1 further includes a top heating device 10 for heating the top of the cooking space. The top heating device 10 may be at least one of a resistive heating device, an infrared heating device, an electromagnetic heating device, and the like. For example, the illustrated embodiment shows an electromagnetic heating device. The electromagnetic heating device includes a spool 11 and a top coil 12. The resistance heating device can comprise any structure such as an electric heating wire, an electric heating tube and the like; the infrared heating device can comprise any structure such as an infrared heating tube, an infrared heating film and the like. The top heating means 10 may be provided on the upper side of the liner 2, alternatively the top heating means 10 may be provided on the lower side of the liner 2.

The top heating device 10 is described herein by way of example in the illustrated embodiment, and the wire reel 11 can be provided at an upper side of the liner 2 and connected to the liner 2. Illustratively, the liner 2 may be provided with a recessed mounting table 5 with a spool 11 located and supported within the mounting table 5. The spool 11 may be attached to the liner 2 by other suitable means, such as snap or fastener fastening. Illustratively, the outer circumference of the spool 11 may be provided with fixing portions 13 (see fig. 3) having holes at intervals, the fixing portions 13 protruding radially from the outer circumference of the spool 11. The inner liner 2 is provided with screw posts 6 (see fig. 2) at intervals. The fixing parts 13 are in one-to-one correspondence with the positions of the screw columns 6. The screw is screwed from the upper side through the hole of the fixing portion 13 and then to the screw column 6. The top coil 12 is wound around the underside of the spool 11, and the top coil 12 may be fixed to the spool 11 by one or more of gluing, snapping, etc.

For cooperation with the top coil 12, the cover plate 4 is a metal member. The alternating magnetic field generated by the top coil 12 can thereby act on the metallic cover plate 4 underneath, so that the cover plate 4 heats itself. The heat generated by the cover plate 4 is transferred to the inner pot to heat the food in the inner pot.

The cover 1 further comprises a visual assembly 20. The visual assembly 20 comprises at least two visual components 21. At least two visual elements 21 are arranged one above the other and are provided on the underside of the top heating device 10. To facilitate viewing of the top heating device 10 through the visual assembly 20 by a user, at least two of the visual components 21 are each configured as a transparent or translucent member. The cover plate 4 can be provided on the underside of the visual element 20. When the cover plate 4 is detached, a user can see the top heating device 10 through the visual assembly 20, and the use experience of the user is improved.

In the present embodiment, at least two of the visual members 21 may be formed in a double-layered or multi-layered visual structure, and the visual structure is more reliable, and the visual member 21 located above the lowest visual member 21 is less likely to be broken, so that even if the lowest visual member 21 is broken by accident, the user does not touch the top heating apparatus 10 as the charged body to cause an electric shock risk. Therefore, the structural reliability of the visible area can be improved, the risk of electric shock of a user is eliminated, and the use safety of the product is improved.

The visual assembly 20 can be provided between the spool 11 and the liner 2, in particular sandwiched between the spool 11 and the liner 2, to secure the visual component 21. The visual component 21 can isolate the top coil 12 from the outside, avoid water, liquid, steam and the like from entering the cover body 1 to affect the top coil 12, and avoid the risk of scalding or electric shock caused by direct contact of a user with the top coil 12 when the cover plate 4 is detached.

To fit the visual assembly 20 on the upper side of the liner 2, the liner 2 is provided with an opening 7, the visual assembly 20 being mounted at the opening 7. Specifically, the mounting table 5 forms the edge of the opening 7, and the visual assembly 20 sleeved with the opening sealing ring 30 can be lapped on the mounting table 5, so that the visual assembly 20 is supported upwards by the mounting table 5, the opening sealing ring 30 seals the gap between the visual assembly 20 and the mounting table 5, and the assembly structure of the visual assembly 20 is simple and convenient to produce and manufacture. The visual assembly 20 is sandwiched between the spool 11 and the mounting table 5. The visual assembly 20 is firmly and reliably assembled in the cover 1 by the clamping force of the wire spool 11 and the mounting table 5.

As shown in fig. 3 and 4, the cover 1 further includes an open sealing ring 30. The split sealing ring 30 is provided with an annular groove 31 and is sleeved on the periphery of the visual assembly 20 through the groove 31. By means of the opening sealing ring 30, the gap between the liner 2 and the visual component 20 can be effectively sealed, and external steam, liquid and the like are prevented from entering the inside of the cover body 1 through the opening 7 of the liner 2 and the gap between the liner 2 and the visual component 20, so that the top heating device 10 is prevented from being damaged.

The split seal ring 30 has an upper seal portion 32, a lower seal portion 33, and a side seal portion 34 that form a groove 31. The side seal 34 can connect the upper seal 32 and the lower seal 33. The periphery of the visual element 20 abuts the side seal 34 and is surrounded by the upper seal 32 and the lower seal 33. At least one of the upper seal portion 32 and the lower seal portion 33 may be provided with a cavity 35 facing the visual element 20 or a bead protruding towards the side of the removable element. By providing the concave cavities 35 and the ribs, the compression or deformation of the split seal ring 30 can be increased, and the sealing reliability can be improved.

At least one of the mount 5 and the spool 11 may be provided with a bead 36, and the provision of the bead 36 can increase the deformation amount of the split seal ring 30, so that the sealing reliability can be improved.

For the illustrated embodiment, the upper seal portion 32 and the lower seal portion 33 are each provided with a cavity 35 facing the visual assembly 20, and the mounting table 5 and the spool 11 are each provided with a bead 36. The concave cavity 35 of the upper sealing portion 32 of the split sealing ring 30 corresponds to the position of the protruding rib 36 of the wire spool 11, and the concave cavity 35 of the lower sealing portion 33 of the split sealing ring 30 corresponds to the position of the protruding rib 36 of the mounting table 5. The ribs 36 can enable the open sealing ring 30 to generate larger compression amount at the concave cavity 35, so that press fit is realized, and sealing reliability is further improved.

The thickness of each visual element 21 is greater than or equal to 0.3mm, for example, the thickness may be 0.3mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm,

5mm, 6mm, etc. Alternatively, the thickness of each visual element 21 is in the range of 0.5mm to 5 mm. The visual component 21 with the thickness of more than 0.3mm can be selected, so that the structural strength is better and the fracture is not easy to occur.

As shown in fig. 3 and 4, the visual assembly 20 includes two visual components 21, namely a first visual component 22 and a second visual component 23, arranged one above the other. The second visual element 23 is located on the underside of the first visual element 22 and both are in surface-to-surface contact, that is to say the two visual elements 21 are next to one another. This solution makes it possible to construct a double-layered visual structure, through which the user can observe the top heating device 10 through the two visual elements 21 when the cover 1 is detached. The first visual component 22 positioned on the upper side is protected by the second visual component 23 and is not easy to break, so that the risk of electric shock caused by accidental breakage of the second visual component 23 by a user is avoided.

The second visual member 23 may have the same configuration and the same radial dimension as the first visual member 22. Thereby, the two visual components 21 can be easily set in the same assembly manner, and the assembly operation is simple and efficient. Illustratively, the first and second visual members 22, 23 are each circular in configuration, which can be adapted to the winding shape of the top coil 12. The radial dimensions of the first visual member 22 and the second visual member 23 may be greater than or equal to the maximum radial dimension of the winding portion of the top coil 12, so that a clean winding of the winding portion is observed through both visual members 21. The thickness of the second visual member 23 may be greater than or equal to the thickness of the first visual member 22. The second visual component 23 can better protect the first visual component 22 from being broken, and the reliability of the double-layer visual structure is improved.

The material of at least one of the second visual member 23 and the first visual member 22 may be a high temperature resistant transparent or translucent glass. Alternatively, the material of at least one of the second visual member 23 and the first visual member 22 may be a high temperature resistant transparent or translucent plastic.

Preferably, the material of the first visual element 22 is transparent or translucent plastic and the material of the second visual element 23 is transparent or translucent glass. The plastic is softer than the glass, and is less prone to break, and the visual component 21 of the plastic is arranged on the upper side of the visual component 21 of the glass, so that the reliability of the visual structure can be improved.

The cover 1 may also be provided with a temperature sensing assembly 42 and a steam component 43. The temperature measuring component 42 is used for measuring the temperature of the top of the cooking space, and the steam component 43 is used for communicating the cooking space with the external environment, so that steam is discharged conveniently. The temperature measuring assembly 42 and the steam component 43 are respectively arranged through holes of the wire spool 11 and the visual assembly 20 in a penetrating manner. The steam component 43 may be, for example, a steam valve. Specifically, referring back to fig. 3, the first visual member 22 is provided with a first through hole 24 and a second through hole 25, the first through hole 24 being closer to the center of the first visual member 22 than the second through hole 25. The second visual member 23 is provided with a third through hole 26 and a fourth through hole 27, the third through hole 26 being closer to the center of the second visual member 23 than the fourth through hole 27. The first through hole 24 corresponds to the upper and lower positions of the third through hole 26, and the temperature measuring assembly 42 penetrates through the two through holes. The second through hole 25 corresponds to the fourth through hole 27 in the vertical position, and the steam member 43 is provided to pass through the two through holes.

The cover 1 further includes a magnetism insulator 41. The magnetism insulator 41 can be arranged on the upper side of the wire spool 11, can prevent magnetic lines of force generated by the top coil 12 during energizing from diffusing toward the upper side of the magnetism insulator 41, has a heat insulating effect, and can prevent generated heat from radiating toward the upper side of the magnetism insulator 41 to a part which is not resistant to high temperature. The magnetism insulator 41 may be detachably attached to the spool 11 by other suitable means such as snap-fit or fastener fastening. The temperature measuring component 42 and the steam component 43 are both arranged on the magnetism isolating component 41 in a penetrating way.

The top coil 12 may be wound in at least one of a single layer, a double layer, and a multiple layer to form a single layer coil, a double layer coil, a multiple layer coil, or a combination of these layers. The top coil 12 may include an enamel wire and an outer wrap surrounding the enamel wire. The overwrap may be an outer adhesive shell, an outer adhesive tape, or the like. The overwrap is an insulating member and is configured as a transparent or translucent member. Further, the material of the outer wrapping piece is an insulating material and can be a proper material such as transparent plastic or semitransparent plastic. The outer wrapping piece is transparent, so that the outer wrapping piece also has the effect of reflecting heat, and the heat radiated outwards from the inner pot can be reflected towards the inner pot, so that the heat preservation effect on the inner pot can be further improved.

Enamelled wires may be members that exhibit metallic luster. For example, the enamel wire may exhibit any suitable metallic luster such as gold, etc. When the cover plate 4 is detached, a user can easily observe that the enameled wire presents metallic luster from the visible part 21, the visual impression of the product is good, and the experience of the user is improved.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described by way of the above embodiments, but it should be understood that the above embodiments are for illustrative and explanatory purposes only and that the utility model is not limited to the above embodiments, but is capable of numerous variations and modifications in accordance with the teachings of the utility model, all of which fall within the scope of the utility model as claimed.

Claims (11)

1. A cover for a cooking appliance, the cover comprising:

a lining;

a top heating device connected to the liner;

a visual assembly comprising at least two visual components arranged one above the other and provided on the underside of the top heating device, each of the at least two visual components being configured as a transparent or translucent member; and

and the cover plate is arranged on the lower side of the visual assembly and is detachably connected to the lining.

2. The cover of claim 1, wherein the visual assembly comprises a first visual component and a second visual component, the second visual component being located on an underside of the first visual component and in surface-to-surface contact therewith.

3. The cover of claim 2, wherein the second visual component is of the same construction and radial dimension as the first visual component; and/or the thickness of the second visual component is greater than or equal to the thickness of the first visual component.

4. The cover of claim 2, wherein the material of at least one of the second visual component and the first visual component is transparent or translucent glass or the material of at least one of the second visual component and the first visual component is transparent or translucent plastic.

5. The cover of claim 4, wherein the material of the first visual element is a transparent or translucent plastic and the material of the second visual element is a transparent or translucent glass.

6. The cover of any one of claims 1 to 5, wherein the liner is provided with an opening, the top heating device is provided on the upper side of the liner, the visual assembly is mounted at the opening, and the cover further comprises an opening sealing ring, the opening sealing ring is provided with an annular groove and sleeved on the periphery of the visual assembly through the groove.

7. The cover of claim 6, wherein the liner is provided with a recessed mounting table, the mounting table forming an edge of the opening, and the visual assembly with the open-ended sealing ring sleeved thereon is lapped on the mounting table.

8. The cover of claim 7, wherein the top heating device comprises a wire spool and a top coil, the wire spool is disposed on an upper side of the liner and connected to the liner, the top coil is wound on a lower side of the wire spool, the visual assembly is sandwiched between the wire spool and the mounting table, and the cover plate is a metal member.

9. The cover of claim 8, wherein at least one of the mounting table and the spool is provided with a bead, the split seal ring has an upper seal portion and a lower seal portion forming the groove, at least one of the upper seal portion and the lower seal portion is provided with a cavity facing the visual component,

the concave cavity of the upper sealing part of the opening sealing ring corresponds to the convex rib of the wire spool, and the concave cavity of the lower sealing part of the opening sealing ring corresponds to the convex rib of the mounting table.

10. The cover of any one of claims 1 to 5, wherein the top heating device is at least one of a resistive heating device, an infrared heating device, an electromagnetic heating device; and/or the thickness of the visual component is greater than or equal to 0.3mm.

11. A cooking appliance comprising a pot and a lid according to any one of claims 1 to 10, the lid being openably and closably provided to the pot to form a cooking space between the lid and the pot.