Cover body assembly and cooking utensil

Abstract

The utility model relates to the technical field of household appliances, and discloses a cover body assembly and a cooking utensil, and the cover body assembly comprises a surface cover which is provided with a first protruding part extending downwards; an inner cover; the sealing structure is clamped between the first protruding part and the inner cover and is embedded into the inner cover; a steam channel is defined by the sealing structure, the first protruding part and the inner cover, and the face cover is provided with a steam outlet communicated with the steam channel. According to the utility model, the sealing connection between the surface cover and the inner cover can be ensured, and steam is prevented from entering an electric appliance part arranged between the surface cover and the inner cover through a gap between the first convex part and the inner cover.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a cover assembly and a cooking utensil. Background Art

[0002] The rice cooker is equipped with a steam valve, which mainly serves the purpose of exhausting and breaking bubbles. The high-temperature steam generated by the rice cooker during cooking will be discharged from the inside of the rice cooker to the outside through the steam valve, and the bubbles formed by the steam will be broken during the discharge process, preventing the bubbles from sticking to the outer surface of the rice cooker due to their large volume bursting when passing through the exhaust port of the steam valve during the discharge process.

[0003] In the related art, steam valves are divided into external and internal types. Regardless of whether they are external or internal, the steam valve is a component independent of the cover body. When installing the steam valve, multiple sealing rings are usually required to achieve the seal between the steam valve and the surface cover and inner cover. The number of parts is large, the assembly process is complicated, and an independent mold for the steam valve needs to be prepared, resulting in a large number of molds and high costs. Utility Model Content

[0004] In view of this, the present invention provides a cover assembly and a cooking utensil to solve the problems in the related art that the cover assembly has a large number of parts and a complicated assembly process.

[0005] In a first aspect, the present invention provides a cover assembly, comprising:

[0006] A face cover having a first protrusion extending downward;

[0007] inner cover;

[0008] a sealing structure, sandwiched between the first protrusion and the inner cover, and embedded in the inner cover;

[0009] The sealing structure, the first protrusion and the inner cover form a steam channel, and the surface cover is provided with a steam outlet communicated with the steam channel.

[0010] Beneficial Effects: Because the front cover has a downwardly extending first protrusion, the sealing structure, the first protrusion, and the inner cover form a steam passage, effectively integrating the steam valve with the front cover or inner cover. Compared to related art, this reduces the number of steam valves, reduces the number of parts, and simplifies the assembly process. Because the sealing structure is sandwiched between the first protrusion and the inner cover, and is embedded in the inner cover, a sealed connection between the front cover and the inner cover is ensured, preventing steam from entering the electrical components located between the front cover and the inner cover through the gap between the first protrusion and the inner cover.

[0011] In an optional embodiment, the inner cover is provided with a first annular groove, the inner side of the first annular groove constitutes a second protrusion; the sealing structure is clamped between the first protrusion and the second protrusion, and has a first sealing portion embedded in the first annular groove.

[0012] Beneficial effect: Since the sealing structure is sandwiched between the first protrusion and the second protrusion, and the first sealing portion of the sealing structure is embedded in the first annular groove of the inner cover, the sealed connection between the surface cover and the inner cover can be ensured, preventing steam from entering the electrical components arranged between the surface cover and the inner cover through the gap between the first protrusion and the inner cover.

[0013] In an optional embodiment, the sealing structure and the first protrusion are interference fit through a concave-convex structure.

[0014] Beneficial effect: Since the sealing structure and the first protrusion are interference fit through the concave-convex structure, the sealing between the sealing structure and the first protrusion can be ensured, preventing steam from entering the electrical components arranged between the surface cover and the inner cover through the gap between the first protrusion and the sealing structure.

[0015] In an optional embodiment, the inner side of the second protrusion constitutes a mounting through hole, and the sealing structure further includes a main body sealing portion that is interference-fitted with the mounting through hole.

[0016] Beneficial effect: Since the main sealing part of the sealing structure is embedded in the inner side of the second protrusion, the sealing structure and the inner cover can be closely matched, further improving the sealing effect and preventing steam from entering the electrical components arranged between the surface cover and the inner cover.

[0017] In an optional embodiment, the cover assembly further includes a heat-insulating cover plate, which is detachably connected to the inner cover, and the heat-insulating cover plate is provided with a steam inlet connected to the steam channel.

[0018] Beneficial effect: Since the thermal insulation cover and the inner cover are detachably connected, when the steam channel needs to be cleaned, the thermal insulation cover is removed from the inner cover, and then a rag is inserted into the steam channel to clean it, which is convenient for users to clean without removing the inner cover and the surface cover.

[0019] In an optional embodiment, the sealing structure further includes an abutting sealing portion extending out of the mounting through hole, and the abutting sealing portion abuts against the thermal insulation cover plate.

[0020] Beneficial effect: Since the abutting sealing portion abuts against the heat-insulating cover plate, the sealing effect can be ensured, preventing steam or rice soup during cooking from contacting the inner cover, and reducing the parts that the user needs to clean.

[0021] In an optional embodiment, the abutting sealing portion includes an outward expansion section and a contraction section. From top to bottom, the outward expansion section extends in an axial direction away from the steam channel, and the contraction section extends in an axial direction close to the steam channel, and the contraction section abuts against the thermal insulation cover plate.

[0022] Beneficial effect: The provision of the outward expansion section and the contraction section can make the abutting sealing portion more easily deformed, thereby further ensuring the sealing contact between the sealing structure and the thermal insulation cover plate.

[0023] In an optional embodiment, a step portion is provided on the outer side of the outward expansion section, and a horizontal surface of the step portion abuts against the lower surface of the inner cover.

[0024] Beneficial effect: the step portion can limit the outward expansion section, ensuring that the abutting sealing portion can contact the thermal insulation cover plate.

[0025] In an optional embodiment, the contraction section is provided with annular ribs.

[0026] Beneficial effect: The annular ribs can increase the strength of the abutting sealing portion.

[0027] In an optional embodiment, the inner cover further has a rib surrounding the outer side of the first annular groove, and the height of the rib is higher than the height of the second protrusion.

[0028] Beneficial effect: Since the height of the rib is higher than the height of the second protrusion and the rib surrounds the outside of the first annular groove, when the sealing performance of the sealing structure fails, it can play a role in blocking water and prevent water from entering the electrical components arranged between the surface cover and the inner cover.

[0029] In an optional embodiment, a guide structure is provided on the inner side of the rib.

[0030] Beneficial effect: By arranging the guide structure on the inner side of the rib, the sealing structure can be easily installed.

[0031] In a second aspect, the present invention further provides a cooking utensil, comprising:

[0032] The cover assembly.

[0033] Beneficial Effects: Because the front cover has a first protrusion extending downward, the sealing structure, the first protrusion, and the inner cover form a steam passage, which is equivalent to integrating the steam valve with the front cover or inner cover. Compared with related technologies, this reduces the number of steam valves, reduces the number of parts, and simplifies the assembly process. Because the sealing structure is sandwiched between the first protrusion and the second protrusion, and the first sealing portion of the sealing structure is embedded in the first annular groove of the inner cover, the front cover and the inner cover are sealed, preventing steam from entering the electrical components located between the front cover and the inner cover through the gap between the first protrusion and the inner cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a structural schematic diagram of a cover assembly according to an embodiment of the present invention at a viewing angle;

[0036] Figure 2 for Figure 1 Top view of the middle boss;

[0037] Figure 3 for Figure 1 Schematic diagram of the structure of the middle cover;

[0038] Figure 4 for Figure 3 a front view of the face cover shown;

[0039] Figure 5 This is a structural schematic diagram of a cover assembly according to an embodiment of the present utility model at another viewing angle;

[0040] Figure 6 A schematic diagram of the structure at one viewing angle after the front cover and the inner cover are assembled together;

[0041] Figure 7 A schematic diagram of the structure after the front cover and the inner cover are assembled together from another perspective;

[0042] Figure 8 This is a cross-sectional view of a cover assembly according to an embodiment of the present invention;

[0043] Figure 9 for Figure 8 A magnified view of middle A;

[0044] Figure 10This is a cross-sectional view of a cover assembly according to another embodiment of the present invention;

[0045] Figure 11 for Figure 10 Enlarged view of middle B;

[0046] Figure 12 for Figure 11 A schematic diagram of the structure of the middle sealing structure at one viewing angle;

[0047] Figure 13 for Figure 11 Schematic diagram of the structure of the middle sealing structure at another perspective.

[0048] Description of reference numerals:

[0049] 1. Inner cover; 101. First annular groove; 102. Second protrusion; 103. Surrounding rib; 1031. Guide structure; 2. Surface cover; 201. First outlet; 202. Second outlet; 203. Guide rib; 204. First connecting end; 205. Second connecting end; 206. Boss; 207. First protrusion; 208. Second annular groove; 209. Annular protrusion; 210. First connecting structure; 211. Second connecting structure; 3. Sealing structure; 301. First sealing part; 302. Second sealing part; 303. Abutting sealing part; 3031. Outward expansion section; 3032. Contraction section; 3033. Step section; 3034. Annular rib; 4. Insulation cover; 401. Steam inlet. DETAILED DESCRIPTION

[0050] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0051] The rice cooker is equipped with a steam valve, which mainly serves the purpose of exhausting and breaking bubbles. The high-temperature steam generated by the rice cooker during cooking will be discharged from the inside of the rice cooker to the outside through the steam valve, and the bubbles formed by the steam will be broken during the discharge process, preventing the bubbles from sticking to the outer surface of the rice cooker due to their large volume bursting when passing through the exhaust port of the steam valve during the discharge process.

[0052] In the related art, steam valves are divided into external and internal types. Regardless of whether they are external or internal, the steam valve is a component independent of the cover body. When installing the steam valve, multiple sealing rings are usually required to achieve the seal between the steam valve and the surface cover and inner cover. The number of parts is large, the assembly process is complicated, and an independent mold for the steam valve needs to be prepared, resulting in a large number of molds and high costs.

[0053] The following combination Figures 1 to 13 , describing the embodiments of the present utility model.

[0054] According to an embodiment of the present invention, on one hand, a cover assembly is provided, including an inner cover 1 , a surface cover 2 and a sealing structure 3 .

[0055] The top cover 2 has a first protrusion 207 extending downward; the sealing structure 3 is sandwiched between the first protrusion 207 and the inner cover 1 and embedded in the inner cover 1; the sealing structure 3, the first protrusion 207 and the inner cover 1 form a steam channel, and the top cover 2 is provided with a steam outlet connected to the steam channel.

[0056] In this embodiment, since the front cover 2 has a first protrusion 207 extending downward, the sealing structure 3, the first protrusion 207, and the inner cover 1 form a steam passage, which is equivalent to integrating the steam valve with the front cover 2 or the inner cover 1. Compared with the related art, the steam valve is reduced, the number of parts is reduced, and the assembly process is simplified. Since the sealing structure 3 is sandwiched between the first protrusion 207 and the inner cover 1, and the sealing structure 3 is embedded in the inner cover 1, the front cover 2 and the inner cover 1 are sealed, preventing steam from entering the electrical components disposed between the front cover 2 and the inner cover 1 through the gap between the first protrusion 207 and the inner cover 1.

[0057] Specifically in one embodiment, the space between the surface cover 2 and the inner cover 1 is provided with electrical components such as a top temperature sensing device and a display assembly.

[0058] In one embodiment, the inner cover 1 is provided with a first annular groove 101 , the inner side of the first annular groove 101 forming a second protrusion 102 ; the sealing structure 3 is sandwiched between the first protrusion 207 and the second protrusion 102 , and has a first sealing portion 301 embedded in the first annular groove 101 .

[0059] In this embodiment, since the sealing structure 3 is clamped between the first protrusion 207 and the second protrusion 102, and the first sealing portion 301 of the sealing structure 3 is embedded in the first annular groove 101 of the inner cover 1, and the second sealing portion 302 of the sealing structure 3 is embedded in the second annular groove 208 of the first protrusion 207, the sealed connection between the surface cover 2 and the inner cover 1 can be ensured, preventing steam from entering the electrical components arranged between the surface cover 2 and the inner cover 1 through the gap between the first protrusion 207 and the inner cover 1.

[0060] In one embodiment, the sealing structure 3 and the first protrusion 207 are interference-fitted through a concave-convex structure.

[0061] In this embodiment, since the sealing structure 3 and the first protrusion 207 are interference fit through the concave-convex structure, the sealing between the sealing structure 3 and the first protrusion 207 can be ensured, preventing steam from entering the electrical components arranged between the surface cover 2 and the inner cover 1 through the gap between the first protrusion 207 and the sealing structure 3.

[0062] Specifically in one embodiment, Figure 9 As shown, two annular protrusions 209 are provided on one side of the first protrusion 207 facing the sealing structure 3 . The position where the first protrusion 207 abuts against the sealing structure 3 is more easily deformed, thereby ensuring the sealing effect.

[0063] In one embodiment, the inner side of the second protrusion 102 constitutes a mounting through hole, and the sealing structure 3 further includes a main body sealing portion that is interference-fitted with the mounting through hole.

[0064] In this embodiment, since the main sealing portion of the sealing structure 3 is embedded in the inner side of the second protrusion 102, the sealing structure 3 can be tightly matched with the inner cover 1, further improving the sealing effect and preventing steam from entering the electrical components arranged between the surface cover 2 and the inner cover 1.

[0065] In one embodiment, the cover assembly further includes a heat-insulating cover plate 4, which is detachably connected to the inner cover 1, and the heat-insulating cover plate 4 is provided with a steam inlet 401 connected to the steam channel.

[0066] In this embodiment, since the thermal insulation cover 4 is detachably connected to the inner cover 1, when the steam channel needs to be cleaned, the thermal insulation cover 4 is removed from the inner cover 1, and then a rag is inserted into the steam channel to wipe it, which is convenient for users to clean without removing the inner cover 1 and the surface cover 2.

[0067] Specifically in one embodiment, Figures 5 to 7 As shown, the steam inlet 401 includes a plurality of arc-shaped holes arranged at intervals.

[0068] In one embodiment, the sealing structure 3 further includes an abutting sealing portion 303 extending out of the mounting through hole, and the abutting sealing portion 303 abuts against the thermal insulation cover plate 4 .

[0069] In this embodiment, since the abutting sealing portion 303 abuts against the heat-insulating cover plate 4, a sealing effect can be ensured to prevent steam or rice soup during cooking from contacting the inner cover 1, thereby reducing the parts that the user needs to clean.

[0070] In one embodiment, Figure 8 and Figure 9As shown, the abutting sealing portion 303 includes an outward expansion section 3031 and a contraction section 3032. From top to bottom, the outward expansion section 3031 extends toward the axial direction away from the steam channel, and the contraction section 3032 extends toward the axial direction close to the steam channel. The contraction section 3032 abuts against the thermal insulation cover plate 4.

[0071] In this embodiment, the provision of the outward expansion section 3031 and the contraction section 3032 can make the abutting sealing portion 303 more likely to deform, thereby further ensuring the sealing contact between the sealing structure 3 and the thermal insulation cover plate 4 .

[0072] Specifically in one embodiment, Figure 9 As shown, a step portion 3033 is provided on the outer side of the outward expansion section, and the horizontal surface of the step portion 3033 abuts against the lower surface of the inner cover 1. The step portion 3033 can limit the outward expansion section to ensure that the abutting sealing portion 303 can contact the thermal insulation cover plate 4.

[0073] Specifically in one embodiment, Figure 9 As shown, the contraction section 3032 is provided with an annular rib 3034 , which can increase the strength of the abutment sealing portion 303 .

[0074] In one embodiment, the inner side of the first annular groove 101 forms a second protrusion 102 , and the inner cover 1 further has a rib 103 surrounding the outer side of the first annular groove 101 , and the height of the rib 103 is higher than the height of the second protrusion 102 .

[0075] In this embodiment, since the height of the rib 103 is higher than the height of the second protrusion 102, and the rib 103 surrounds the outside of the first annular groove 101, when the sealing performance of the sealing structure 3 fails, it can play a role in blocking water and prevent water from entering the electrical components arranged between the surface cover 2 and the inner cover 1.

[0076] In one embodiment, a guide structure 1031 is provided on the inner side of the rib 103 .

[0077] In this embodiment, by providing a guide structure 1031 on the inner side of the rib 103 , the sealing structure 3 can be easily installed.

[0078] Specifically in one embodiment, when assembling the cover body assembly, the sealing structure 3 is installed on the inner cover 1 from top to bottom on the inner side of the rib 103, and the first sealing portion 301 of the sealing structure 3 is embedded in the first annular groove 101 of the inner cover 1. Then, the surface cover 2 is assembled onto the inner cover 1, so that the first protrusion 207 of the surface cover 2 is opposite to the second protrusion 102 of the inner cover 1, so that the first protrusion 207 presses the sealing ring, and then the surface cover 2 and the inner cover 1 are fixed by snaps and screws.

[0079] Specifically in one embodiment, the guide structure 1031 is a guide slope provided on the inner side of the top of the rib 103 .

[0080] In another embodiment, Figure 10 and Figure 11 As shown, the first protrusion 207 is provided with a second annular groove 208, the sealing structure 3 is located between the first protrusion 207 and the second protrusion 102, and the first sealing portion 301 of the sealing structure 3 is embedded in the first annular groove 101 of the inner cover 1, and the second sealing portion 302 of the sealing structure 3 is embedded in the second annular groove 208 of the first protrusion 207, which can achieve all-round sealing and ensure the sealing effect.

[0081] In one embodiment, Figure 1 As shown, a boss 206 is provided on the upper surface of the cover 2 , and a steam outlet is provided on the boss 206 .

[0082] In this embodiment, a boss 206 is provided on the upper surface of the cover 2 and a steam outlet is provided on the boss 206 , which can remind the user of the location of the steam outlet and prevent the user from touching the steam outlet when using the cooking appliance.

[0083] In one embodiment, the height of the boss 206 is h1, where h1 is less than 1 mm.

[0084] In this embodiment, the height of the boss 206 is less than 1 mm, which is not very high, and thus will not affect the overall aesthetics of the cover assembly.

[0085] Specifically in one embodiment, the height of the boss 206 is 0.5 mm.

[0086] Specifically in one embodiment, the height of the boss 206 is 0.8 mm.

[0087] Specifically in one embodiment, the height of the boss 206 is 0.3 mm.

[0088] In one embodiment, at least part of the steam outlet is provided with guide ribs 203 for discharging the steam obliquely upward.

[0089] In this embodiment, by arranging the guide rib 203 at the steam outlet, the guide rib 203 can make the steam be discharged upward at an angle to prevent the steam from being discharged directly towards people. At the same time, the guide rib 203 can break up the bubbles generated by the water vapor to prevent the bubbles from bursting after passing through the steam outlet due to their large volume and adhering to the outer surface of the rice cooker.

[0090] In one embodiment, Figure 2 As shown, the steam outlet includes a first outlet 201 and a second outlet 202 , and the guide rib 203 is provided at the first outlet 201 .

[0091] In this embodiment, since the guide rib 203 is provided at the first outlet 201 and no guide rib 203 is provided at the second outlet 202, the steam discharged from the first outlet 201 is discharged obliquely upward, and the steam discharged from the second outlet 202 is discharged vertically upward.

[0092] In one embodiment, the guide rib 203 is connected to the cover 2 via a first connecting structure 210, which divides the first outlet 201 into at least two first outlet sections; and / or, the middle of the second outlet 202 is connected to the cover via a second connecting structure 211, which divides the second outlet 202 into at least two second outlet sections.

[0093] In this embodiment, the provision of the first connection structure 210 can enhance the strength of the surface cover 2 at the first outlet 201 ; the provision of the second connection structure 211 can enhance the strength of the surface cover 2 at the second outlet 202 .

[0094] Specifically in one embodiment, Figure 4 As shown, one first connection structure 210 is provided to separate the first outlet 201 into two first outlet sections; one second connection structure 211 is provided to separate the second outlet 202 into two second outlet sections.

[0095] In this embodiment, there is no limitation on the number of the first connection structure 210 and the second connection structure 211 , which can be one, two, or three.

[0096] In one embodiment, Figure 4 As shown, the two ends of the guide rib 203 are respectively a first connecting end 204 and a second connecting end 205 . The first connecting end 204 is connected to the first end of the first outlet 201 , and the second connecting end 205 is connected to the second end of the first outlet 201 .

[0097] In this embodiment, the first connecting end 204 is connected to the first end of the first outlet 201, and the second connecting end 205 is connected to the second end of the first outlet 201, which can increase the structural strength of the steam outlet of the cover 2 while preventing shrinkage.

[0098] In one embodiment, the guide rib 203 protrudes from the inner wall of the steam channel, and the protruding height is L, 0.1 mm≤L≤2 mm.

[0099] In this embodiment, the protruding height of the guide rib 203 is between 0.1 mm and 2 mm, which can effectively guide the flow and ensure the passage of steam.

[0100] Specifically in one embodiment, the protruding height of the guide rib 203 is 0.1 mm.

[0101] Specifically in one embodiment, the protruding height of the guide rib 203 is 1 mm.

[0102] Specifically in one embodiment, the protruding height of the guide rib 203 is 2 mm.

[0103] According to an embodiment of the present invention, on the other hand, a cooking utensil is provided, comprising: the cover assembly provided in the above embodiment.

[0104] In this embodiment, since the front cover 2 has a first protrusion 207 extending downward, the sealing structure 3, the first protrusion 207, and the inner cover 1 form a steam passage, which is equivalent to integrally forming the steam valve with the front cover 2 or the inner cover 1. Compared with the related art, the steam valve is reduced, the number of parts is reduced, and the assembly process is simplified. Since the sealing structure 3 is sandwiched between the first protrusion 207 and the second protrusion 102, and the first sealing portion 301 of the sealing structure 3 is embedded in the first annular groove 101 of the inner cover 1, and the second sealing portion 302 of the sealing structure 3 is embedded in the second annular groove 208 of the first protrusion 207, the front cover 2 and the inner cover 1 are sealed, preventing steam from entering the electrical components disposed between the front cover 2 and the inner cover 1 through the gap between the first protrusion 207 and the inner cover 1.

[0105] Specifically in one embodiment, the cooking appliance is an electric rice cooker or a pressure cooker.

[0106] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by this application.

Claims

1. A cover assembly, characterized in that: include: The face cover (2) has a first protrusion (207) extending downward; Inner cover (1); A sealing structure (3) is sandwiched between the first protrusion (207) and the inner cover (1), and is embedded in the inner cover (1); The sealing structure (3), the first protrusion (207) and the inner cover (1) form a steam channel, and the surface cover (2) is provided with a steam outlet communicating with the steam channel.

2. The cover assembly according to claim 1, wherein: The inner cover (1) is provided with a first annular groove (101), the inner side of the first annular groove (101) forming a second protrusion (102); the sealing structure (3) is sandwiched between the first protrusion (207) and the second protrusion (102), and has a first sealing portion (301) embedded in the first annular groove (101).

3. The cover assembly according to claim 2, wherein: The sealing structure (3) and the first protruding portion (207) are interference-fitted via a concave-convex structure.

4. The cover assembly according to claim 2, wherein: The inner side of the second protruding portion (102) forms a mounting through hole, and the sealing structure (3) further comprises a main body sealing portion that is interference-fitted with the mounting through hole.

5. The cover assembly according to claim 4, wherein: The cover assembly further comprises a heat-insulating cover plate (4), the heat-insulating cover plate (4) being detachably connected to the inner cover (1), and the heat-insulating cover plate (4) being provided with a steam inlet (401) communicating with the steam channel.

6. The cover assembly according to claim 5, wherein: The sealing structure (3) further comprises an abutting sealing portion (303) extending out of the mounting through hole, and the abutting sealing portion (303) abuts against the heat-insulating cover plate (4).

7. The cover assembly according to claim 6, wherein: The abutting sealing portion (303) comprises an outward-expanding section (3031) and a contracting section (3032). From top to bottom, the outward-expanding section (3031) extends in a direction away from the axis of the steam channel, and the contracting section (3032) extends in a direction close to the axis of the steam channel. The contracting section (3032) abuts against the thermal insulation cover plate (4).

8. The cover assembly according to claim 7, wherein: A step portion (3033) is provided on the outer side of the outward expansion section (3031), and the horizontal surface of the step portion (3033) abuts against the lower surface of the inner cover (1).

9. The cover assembly according to claim 7, wherein: The contraction section (3032) is provided with an annular rib (3034).

10. The cover assembly according to any one of claims 2 to 9, characterized in that: The inner cover (1) further comprises a rib (103) surrounding the outside of the first annular groove (101), and the height of the rib (103) is higher than the height of the second protrusion (102).

11. The cover assembly according to claim 10, wherein: A guide structure (1031) is provided on the inner side of the rib (103).

12. A cooking utensil, characterized in that: include: The cover assembly according to any one of claims 1 to 11.

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