Upper cover and cooking utensil having same

Abstract

Provided in the present invention are an upper cover and a cooking utensil having same. The upper cover comprises: a cover body, comprising an outer cover and an inner cover, the inner cover being arranged below the outer cover; a baking assembly, comprising a motor and a first fan blade, the motor being provided with a motor shaft, the motor shaft comprising a shaft body and a shaft sleeve sleeved on the shaft body, the first fan blade being rotatably arranged below the inner cover, and the motor shaft being drivingly connected to the first fan blade; and a sealing assembly, comprising an elastic sealing ring and a positioning ring, a through hole being formed in the inner cover, the elastic sealing ring being arranged at the through hole and connected to the inner cover, and the positioning ring being arranged on the elastic sealing ring. The motor shaft passes through an inner hole of the positioning ring to be in clearance fit with the inner hole of the positioning ring; the shaft sleeve is provided with a sealing section located above the elastic sealing ring; and the elastic sealing ring has an initial position where the elastic sealing ring is separated from the sealing section and a sealing position to which the elastic sealing ring rises to fit with the sealing section. The solution can solve the problem of motor shaft sealing structures failing to meet usage requirements.

Description

[0001] TECHNICAL FIELD The present invention relates to the field of small household appliances, and more specifically, to an upper cover and a cooking appliance having the same. Background Art Electric pressure cookers are commonly used cooking appliances in daily life. With the improvement of people's living standards, electric pressure cookers with pressure cooking and baking modes have emerged. These pressure cookers can not only cook food under pressure but also function as air fryers to toast food. In related art, the cooking appliance includes an upper cover and a pot body. The upper cover is equipped with a motor and fan blades. The motor's output shaft drives the fan blades to rotate, blowing hot air into the pot body to toast the food. To ensure sealing performance in the pressure cooking mode while not hindering the rotation of the motor's output shaft, an elastic sealing ring is installed between the motor output shaft and the upper cover. The deformation of the inner edge of the elastic sealing ring seals the gap between the output shaft and the upper cover. However, the above-mentioned sealing method suffers from poor positioning due to the relatively soft texture of the elastic seal, which can easily shift the sealing position. Furthermore, the elastic seal's poor lubrication can hinder the rotation of the output shaft. SUMMARY OF THE INVENTION The present invention provides an upper cover and a cooking appliance incorporating the same to address the problem that motor shaft sealing structures in related art fail to meet user requirements. According to one aspect of the present invention, an upper cover is provided, comprising: a cover body comprising an outer cover and an inner cover, the inner cover being arranged below the outer cover; a baking assembly comprising a motor and a first fan blade, the motor comprising a motor shaft, the motor shaft comprising a shaft body and a shaft sleeve sleeved on the shaft body, the first fan blade being rotatably arranged below the inner cover, the motor shaft being drivingly connected to the first fan blade; a sealing assembly comprising an elastic sealing ring and a positioning ring, the inner cover being provided with a through hole, the elastic sealing ring being arranged at the through hole of the inner cover and connected to the inner cover, the positioning ring being concentrically arranged on the elastic sealing ring; wherein the motor shaft is inserted through the inner hole of the positioning ring and is gap-fitted with the inner hole of the positioning ring, the shaft sleeve having a sealing section located above the elastic sealing ring, the elastic sealing ring having an initial position separated from the sealing section and a sealing position in which it floats up to fit with the sealing section. Using the technical solution of the present invention, the upper cover includes a cover body, a baking assembly, and a sealing assembly. When the food is to be baked, the motor shaft drives the first fan blade to rotate, blowing hot air toward the food within the pot. At this time, the elastic sealing ring is in its initial position, separated from the sealing section of the motor shaft. The hole wall of the positioning ring is in a clearance fit with the motor shaft, ensuring that the elastic sealing ring and the positioning ring do not affect the rotation of the motor shaft. When the food is to be pressure-cooked, the pressure within the pot gradually increases. Under the action of high-pressure steam, the elastic sealing ring floats from its initial position to a sealed position where it abuts the sealing section. This creates a sealed cavity between the pot body and the inner cover, accelerating cooking efficiency.The aforementioned sealing assembly, with the positioning ring, offers improved lubrication compared to an elastic seal and does not obstruct motor shaft rotation. Furthermore, the positioning ring can position the elastic sealing ring relative to the shaft sleeve, effectively preventing the sealing assembly from deviating from its sealing position. Furthermore, the elastic sealing ring is provided with a circumferentially extending receiving groove. The outer edge of the positioning ring fits within the receiving groove, while the inner edge of the positioning ring protrudes inwardly beyond the inner edge of the elastic sealing ring. This structure utilizes the receiving groove to position the positioning ring, offering the advantages of a simple structure and ease of installation. Furthermore, an annular boss is provided on the upper surface of the elastic sealing ring. When the elastic sealing ring is in the sealing position, the boss mates with the sealing section. The boss enhances the stability of the contact between the elastic sealing ring and the sealing section, thereby improving the sealing effect between the two sections and maintaining a simple structure. Furthermore, the outer wall of the elastic sealing ring is provided with a circumferentially extending mounting groove, through which the inner cover is connected to the elastic sealing ring. The mounting groove connected to the inner cover offers the advantages of a simple structure and ease of installation. Furthermore, the elastic sealing ring comprises an inner ring, an intermediate ring, and an outer ring, connected sequentially from the inside out. The intermediate ring has a thickness smaller than both the inner and outer rings. A positioning ring is provided on the inner ring, and the outer ring is connected to the inner cover, allowing the inner ring to fit snugly against the sealing section. With this elastic sealing ring structure, since the intermediate ring is thinner than both the inner and outer rings, the thinner intermediate ring facilitates movement of the inner ring relative to the outer ring after upward pressure is applied within the pot body, allowing it to float to the sealing position. Furthermore, the positioning ring is made of polytetrafluoroethylene, a material with high structural strength and excellent lubricity, positioning the motor shaft without hindering its rotation. Alternatively, the elastic sealing ring can be made of silicone. These materials offer the advantage of being easily deformable. Furthermore, the shaft sleeve further includes a positioning section, and the sealing section is connected to the upper end of the positioning section. The diameter of the sealing section is larger than that of the positioning section, and the outer wall of the positioning section is loosely fitted with the inner edge of the positioning ring. Using the shaft sleeve to provide the sealing section offers the advantages of simple structure and ease of processing. Furthermore, the baking assembly further includes a second fan blade sleeved on the motor shaft, the second fan blade being located above the inner cover. A limit plate is also sleeved on the motor shaft, the second fan blade being sandwiched between the limit plate and the inner cover. And / or, the baking assembly further includes a heating element located below the first fan blade. The heating element generates heat to heat air, and the first fan blade blows the heated air into the pot to toast the food.Furthermore, the upper cover also includes a pressure-limiting valve and an exhaust pipe. The exhaust pipe is provided through the inner cover, and the pressure-limiting valve is located at the upper end of the exhaust pipe. During pressure cooking, the pressure-limiting valve covers the exhaust pipe, and the upper cover is placed on the pot body to form a sealed chamber, thereby achieving pressure cooking of food. This provides the cooking appliance with the advantage of being multi-functional. Alternatively, the motor can be located on the outer cover. This structure offers the advantages of simplicity and ease of installation. According to another aspect of the present invention, a cooking appliance is provided. The cooking appliance comprises: a pot body; and an upper cover, which is provided on the pot body and is the upper cover described above. When using this cooking appliance, when food is to be toasted, the elastic sealing ring is in an initial position separated from the sealing section of the motor shaft, and the hole wall of the positioning ring is in a clearance fit with the motor shaft. The elastic sealing ring and the positioning ring do not affect the rotation of the motor shaft. When pressure cooking is required, the elastic sealing ring, under the action of high-pressure steam, rises from its initial position to a sealed position aligned with the sealing section. This creates a sealed cavity between the pot body and the inner lid, accelerating cooking efficiency. The aforementioned sealing assembly, with the positioning ring, offers improved lubrication compared to the elastic seal and does not hinder the rotation of the motor shaft. Furthermore, the positioning ring can better position the elastic sealing ring and the shaft sleeve relative to each other, effectively preventing the sealing assembly from deviating from its sealing position. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which form a part of this application, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and are not intended to unduly limit the present invention. In the drawings: FIG1 shows a cross-sectional view of an upper cover according to an embodiment of the present invention; FIG2 shows an enlarged partial view of point A in FIG1; FIG3 shows an assembled view of the sealing assembly of the upper cover according to an embodiment of the present invention; FIG4 shows an exploded view of the upper cover according to an embodiment of the present invention; FIG5 shows a partial cross-sectional view of the upper cover according to an embodiment of the present invention; and FIG6 shows a front view of the upper cover according to an embodiment of the present invention. Among them, the above drawings include the following figure marks:.

[0002] 10. Cover body; 11. Outer cover; 12. Inner cover; 121. Cover teeth;

[0003] 20. Baking assembly; 21. Motor; 211. Motor shaft; 213. Shaft body; 214. Bushing; 2141. Positioning section; 2142. Sealing section; 22. First fan blade; 23. Second fan blade; 24. Limiting plate;

[0004] 30. Sealing assembly; 31. Elastic sealing ring; 311. Receiving groove; 312. Annular boss; 313. Mounting groove; 314. Inner ring; 315. Intermediate ring; 316. Outer ring; 32. Positioning ring;

[0005] 40. Exhaust pipe; 50. Pressure limiting valve. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following, in conjunction with the accompanying drawings, provides a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments represent only a portion of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and in no way limits the present invention, its application, or use. All other embodiments devised by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention. As shown in Figures 1 to 6, an embodiment of the present invention provides an upper cover, which includes a cover body 10, a baking assembly 20, and a sealing assembly 30. The cover body 10 includes an outer cover 11 and an inner cover 12, and the inner cover 12 is disposed below the outer cover 11; the baking assembly 20 includes a motor 21 and a first fan blade 22, the motor 21 having a motor shaft 211, the motor shaft 211 including a shaft body 213 and a shaft sleeve 214 sleeved on the shaft body 213, the first fan blade 22 is rotatably disposed below the inner cover 12, and the motor shaft 211 is drivingly connected to the first fan blade 22; the sealing assembly 30 includes an elastic sealing ring 31 and a positioning ring 32, the inner cover 12 is provided with a through hole, the elastic sealing ring 31 is disposed at the through hole of the inner cover 12 and connected to the inner cover 12, and the positioning ring 32 is concentrically disposed on the elastic sealing ring 31; wherein the motor shaft 211 is passed through the inner hole of the positioning ring 32 and has a clearance fit with the inner hole of the positioning ring 32. The shaft sleeve 214 has a sealing section 2142 located above the elastic sealing ring 31. The elastic sealing ring 31 has an initial position separated from the sealing section 2142 and a sealing position in which it floats up and engages with the sealing section 2142. Applying the technical solution of the present invention, the upper cover includes the cover body 10, the baking assembly 20, and the sealing assembly 30. When food is to be baked and cooked, the motor shaft 211 of the motor 21 drives the first fan blade 22 to rotate, blowing hot air toward the food in the pot. At this time, the elastic sealing ring 31 is in its initial position separated from the sealing section 2142 of the motor shaft 211. The hole wall of the positioning ring 32 is in a clearance fit with the motor shaft 211, so the elastic sealing ring 31 and the positioning ring 32 do not affect the rotation of the motor shaft 211. When pressure cooking is required for food, the pressure in the pot body gradually increases. Under the action of high-pressure steam, the elastic sealing ring 31 floats from its initial position to a sealing position in contact with the sealing section 2142. At this time, a closed cavity is formed between the pot body and the inner cover 12, which speeds up the cooking efficiency of the food.The aforementioned sealing assembly 30, with the positioning ring 32, offers improved lubrication compared to elastic seals and does not hinder the rotation of the motor shaft 211. Furthermore, the positioning ring 32 can better position the elastic sealing ring 31 and the shaft sleeve 214 relative to each other, effectively preventing the sealing assembly 30 from deviating from its sealing position. Compared to using an oil seal on the motor shaft 211 for sealing, the sealing assembly 30 of this embodiment can achieve sealing while reducing the rotational resistance of the motor shaft 211. Specifically, the use of an oil seal to seal the motor shaft 211 creates greater friction between the motor shaft 211 and the oil seal during rotation, resulting in greater resistance during the operation of the motor 21. The inner cover 12 is provided with cover teeth 121. In this embodiment, the motor shaft 211 passes through the inner holes of the elastic sealing ring 31 and the inner holes of the positioning ring 32 and extends to the bottom of the inner cover 12. The first fan blade 22 is sleeved on the motor shaft 211 and detachably connected to the motor shaft 211. The motor shaft 211 drives the first fan blade 22 to rotate. The gap between the positioning ring 32 and the motor shaft 211 is between 0 and 0.10 mm. As shown in Figures 1 to 3, the elastic sealing ring 31 is provided with a circumferentially extending receiving groove 311. The outer edge of the positioning ring 32 is embedded in the receiving groove 311, and the inner edge of the positioning ring 32 protrudes inwardly from the inner edge of the elastic sealing ring 31. This structure, which uses the receiving groove 311 to position the positioning ring 32, has the advantages of simple structure and easy installation. The positioning ring 32 can be movably disposed within the receiving groove 311, with the receiving groove 311 used to limit the positioning ring 32, or it can be fixed within the receiving groove 311 so that it moves with the elastic sealing ring 31. It should be noted that the positioning ring 32 can also be configured as an annular or plate-shaped structure. As shown in Figures 2 and 3, an annular boss 312 is provided on the upper surface of the elastic sealing ring 31. When the elastic sealing ring 31 is in the sealing position, the annular boss 312 abuts against the sealing section 2142. The annular boss 312 enhances the stability of the contact between the elastic sealing ring 31 and the sealing section 2142, thereby improving the sealing effect between the elastic sealing ring 31 and the sealing section 2142, and has the advantage of a simple structure. In this embodiment, in the baking cooking mode, the gap between the annular boss 312 and the sealing section 2142 is approximately 2 mm. In other embodiments, an upwardly extending annular flange may be provided on the hole wall of the elastic sealing ring 31, and a seal may be formed by the annular flange and the sealing section 2142.As shown in Figures 1 and 3 , the outer wall of the elastic sealing ring 31 is provided with a mounting groove 313 extending along its circumference. The inner cover 12 is connected to the elastic sealing ring 31 via the mounting groove 313. Using the mounting groove 313 to connect to the inner cover 12 offers the advantages of a simple structure and ease of installation. As shown in Figures 2 and 3 , the elastic sealing ring 31 comprises an inner ring 314, an intermediate ring 315, and an outer ring 316, which are sequentially connected from the inside out. The thickness of the intermediate ring 315 is smaller than that of both the inner ring 314 and the outer ring 316. The positioning ring 32 is provided on the inner ring 314, and the outer ring 316 is connected to the inner cover 12. The inner ring 314 is capable of affixing to the sealing section 2142. With the elastic sealing ring 31 structured as described above, since the thickness of the intermediate ring 315 is smaller than that of both the inner ring 314 and the outer ring 316, the thinner intermediate ring 315 facilitates the movement of the inner ring 314 relative to the outer ring 316 after upward pressure within the pot body, thereby allowing the inner ring 314 to float to a sealed position. In this embodiment, the outer edge diameter of the intermediate ring 315 is smaller than the diameter of the through hole, ensuring that the inner cover 12 does not affect the intermediate ring 315 when the inner ring 314 moves relative to the outer ring 316. Specifically, the annular boss 312 is provided on the upper surface of the inner ring 314, the receiving groove 311 is provided on the inner sidewall of the inner ring 314, and the mounting groove 313 is provided on the outer sidewall of the outer ring 316. Specifically, the positioning ring 32 is made of polytetrafluoroethylene, a material characterized by high structural strength and excellent lubricity. This material positions the motor shaft 211 without hindering its rotation. In this embodiment, the elastic sealing ring 31 is made of silicone. Using this material for the elastic sealing ring 31 offers the advantage of being easily deformable. As shown in Figure 2 , the shaft sleeve 214 also includes a positioning section 2141. The upper end of the positioning section 2141 is connected to the sealing section 2142. The diameter of the sealing section 2142 is larger than that of the positioning section 2141, and the outer wall of the positioning section 2141 is clearance-matched with the inner edge of the positioning ring 32. Using the shaft sleeve 214 to provide the sealing section 2142 offers the advantages of a simple structure and ease of processing. As shown in Figures 2 and 4 , the baking assembly 20 also includes a second fan blade 23 sleeved on the motor shaft 211. The second fan blade 23 is located above the inner cover 12. A limiting plate 24 is also sleeved on the motor shaft 211. The second fan blade 23 is sandwiched between the limiting plate 24 and the inner cover 12. The second fan blade 23 dissipates heat from the motor 21, preventing damage due to overheating.In this embodiment, a sealing ring is provided at the lower end of the sleeve 214 to seal the gap between the sleeve 214 and the second fan blade 23. In this embodiment, the baking assembly 20 also includes a heating element located below the first fan blade 22. The heating element generates heat to heat air, which is then blown into the pot body by the first fan blade 22 to toast the food. As shown in Figure 1, the upper cover also includes a pressure-limiting valve 50 and an exhaust pipe 40. The exhaust pipe 40 passes through the inner cover 12, and the pressure-limiting valve 50 is located at the upper end of the exhaust pipe 40. During pressure cooking, the pressure-limiting valve 50 covers the exhaust pipe 40, and the upper cover is placed on the pot body to form a sealed chamber, thereby achieving pressure cooking of the food. This provides the cooking appliance with the advantage of multiple functions. In this embodiment, the motor 21 is located on the outer cover 11. The above structure has the advantages of simplicity and ease of installation. Another embodiment of the present invention provides a cooking appliance comprising a pot body and an upper cover, the upper cover being disposed on the pot body and being the aforementioned upper cover. When using this cooking appliance, when baking food, the elastic sealing ring 31 is located in an initial position separated from the sealing section 2142 of the motor shaft 211. The hole wall of the positioning ring 32 is loosely fitted with the motor shaft 211, ensuring that the elastic sealing ring 31 and the positioning ring 32 do not interfere with the rotation of the motor shaft 211. When pressure cooking food, the elastic sealing ring 31, under the action of high-pressure steam, rises from its initial position to a sealed position aligned with the sealing section 2142. At this point, a sealed cavity is formed between the pot body and the inner cover 12, accelerating cooking efficiency. Using the aforementioned sealing assembly 30, the positioning ring 32 provides better lubrication than an elastic seal and does not hinder the rotation of the motor shaft 211. The positioning ring 32 can also position the elastic sealing ring 31 and the shaft sleeve 214 relative to each other, achieving better positioning and preventing the sealing assembly 30 from deviating from the sealing position. The cooking appliance includes an electric rice cooker, an electric pressure cooker, or a multifunctional heating pot with baking, cooking, and other functions. It should be noted that the terminology used herein is intended only to describe specific embodiments and is not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular is intended to include the plural. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.Unless otherwise specified, the relative arrangement of components and steps, numerical expressions, and numerical values ​​described in these embodiments do not limit the scope of the present invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to scale. Techniques, methods, and devices known to those skilled in the relevant art may not be discussed in detail, but, where appropriate, should be considered part of this specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the directions or positional relationships shown in the drawings and are only used to facilitate the description of the present invention and simplify the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or components referred to must have a specific direction or be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention. The directional words "inside" and "outside" refer to the inside and outside relative to the outline of the component itself. For the convenience of description, spatially relative terms such as "on..." and "above..." may be used herein.

[0006] "On the upper surface of" or "above" are used to describe the spatial relationship between a device or feature and other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device during use or operation, in addition to the device's depicted orientation in the figures. For example, if a device in a drawing is inverted, a device described as "above" or "above" another device or structure would subsequently be positioned as "below" or "beneath" the other device or structure. Thus, the exemplary term "above" can encompass both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly. Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meanings and should not be construed as limiting the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements that fall within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

Claims 1. A cover, characterized in that: The upper cover comprises: a cover body (10), comprising an outer cover (11) and an inner cover (12), wherein the inner cover (12) is arranged below the outer cover (11); a baking assembly (20), comprising a motor (21) and a first fan blade (22), wherein the motor (21) has a motor shaft (211), wherein the motor shaft (211) comprises a shaft body (213) and a shaft sleeve (214) sleeved on the shaft body (213), wherein the first fan blade (22) is rotatably arranged below the inner cover (12), and wherein the motor shaft (211) is drivingly connected to the first fan blade (22); and a sealing assembly (30), comprising an elastic sealing ring (31) and a positioning ring (32), wherein the inner cover (12) is provided with a through hole, and wherein the elastic sealing ring (31) is arranged on the inner cover (12). The motor shaft (211) is inserted into the inner hole of the positioning ring (32) and connected to the inner cover (12); the positioning ring (32) is concentrically arranged on the elastic sealing ring (31); wherein the motor shaft (211) is passed through the inner hole of the positioning ring (32) and is clearance-matched with the inner hole of the positioning ring (32); the shaft sleeve (214) has a sealing section (2142) located above the elastic sealing ring (31); the elastic sealing ring (31) has an initial position separated from the sealing section (2142) and a sealing position floated up to fit with the sealing section (2142).

2. The upper cover according to the preceding claim, wherein: The elastic sealing ring (31) is provided with a receiving groove (311) extending along its circumference, the outer edge of the positioning ring (32) is embedded in the receiving groove (311), and the inner edge of the positioning ring (32) protrudes inwardly from the inner edge of the elastic sealing ring (31).

3. The upper cover according to any one of the preceding claims, wherein: An annular boss (312) is provided on the upper surface of the elastic sealing ring (31), and when the elastic sealing ring (31) is located at the sealing position, the annular boss (312) fits with the sealing section (2142).

4. The upper cover according to any one of the preceding claims, wherein: The outer side wall of the elastic sealing ring (31) is provided with a mounting groove (313) extending along the circumference thereof, and the inner cover (12) is connected to the elastic sealing ring (31) via the mounting groove (313).

5. The upper cover according to any one of the preceding claims, wherein: The elastic sealing ring (31) comprises an inner ring (314), an intermediate ring (315) and an outer ring (316) which are connected in sequence from the inside to the outside, the thickness of the intermediate ring (315) is smaller than the thickness of the inner ring (314) and the thickness of the outer ring (316), the positioning ring (32) is arranged on the inner ring (314), the outer ring (316) is connected to the inner cover (12), and the inner 9 The ring (314) is capable of fitting with the sealing section (2142).

6. The upper cover according to any one of the preceding claims, wherein: The positioning ring (32) is made of polytetrafluoroethylene; and / or the elastic sealing ring (31) is made of silicone.

7. The upper cover according to any one of the preceding claims, wherein: The shaft sleeve (214) further comprises a positioning section (2141), the upper end of the positioning section (2141) is connected to the sealing section (2142), the diameter of the sealing section (2142) is larger than the diameter of the positioning section (2141), and the outer side wall of the positioning section (2141) is connected to the positioning ring. (32) The inner edge clearance fit.

8. The upper cover according to any one of the preceding claims, wherein: The baking component (20) further comprises a second fan blade (23) sleeved on the motor shaft (211), the second fan blade (23) being located above the inner cover (12), a limiting plate (24) being sleeved on the motor shaft (211), the second fan blade (23) being sandwiched between the limiting plate (24) and the inner cover (12); and / or the baking component (20) further comprises a heating element, the heating element being located below the first fan blade (22).

9. The upper cover according to any one of the preceding claims, wherein: The upper cover further comprises a pressure limiting valve (50) and an exhaust pipe (40), the exhaust pipe (40) being arranged through the inner cover (12), and the pressure limiting valve (50) being arranged at the upper end of the exhaust pipe (40); and / or the motor (21) being arranged on the outer cover (11).

10. A cooking utensil, characterized in that: The cooking utensil comprises: a pot body; and an upper cover, the cover being arranged on the pot body, and the upper cover being the upper cover according to any one of claims 1 to 9.

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