Pot cover assembly of pressure cooking utensil and pressure cooking utensil

Abstract

The utility model discloses a pressure cooking utensil and a pot cover component thereof, the pot cover component comprises a surface cover and an inner cover arranged below the surface cover, the surface cover is provided with a mounting position, the mounting position is provided with a pressure release valve, the pot cover component further comprises a driving piece for driving the pressure release valve to exhaust, and the inner cover is provided with a pressure release valve. A sealing piece is fixed to the position, corresponding to the installation position, of the lower side of the face cover and comprises a body and a bent thin wall, the thickness of the bent thin wall is smaller than that of the body, the bent thin wall is provided with a bent part protruding towards the pressure release valve, and the driving piece can push the bent part to open the pressure release valve. The thickness of the bent thin wall is smaller than that of the body, so that the elastic force of the bent thin wall is smaller, the bent thin wall can deform more easily to push the heavy punch when being pushed by the driving part, and the pulling force to the body is smaller, so that the body is not greatly deformed under the pulling action of the bent thin wall; therefore, the position and posture stability of the body is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a pot lid assembly and a pressure cooking appliance. Background Technology

[0002] The pressure relief valve is an important component of pressure cooking appliances. It is used to release gas from the pot after pressure cooking, thereby reducing the pressure inside the pot. The pressure relief valve is usually located on the lid and is driven by a mechanism that lifts the valve's counterweight, thus opening the vent pipe to release gas.

[0003] However, during the pressure relief process, the steam is quite humid and contains bubbles and foam, which can cause humid steam and liquid to enter the lid, contaminating the inside and raising its temperature. This poses a risk of burns to users, and prolonged exposure to steam can cause the plastic parts of the lid to age and break. Therefore, most pressure cookers have a seal at the pressure relief valve. In existing technology, some lids include a top cover, a liner, and an inner cover, with the seal typically located on the liner and a counterweight positioned above it. This prevents gas from reaching the underside of the liner during pressure relief. However, some pressure cookers have simpler lid structures, consisting only of a top cover and an inner cover, which significantly increases the difficulty of sealing the lid and makes this arrangement unsuitable for all models.

[0004] Furthermore, there are generally two types of seals. One type has an opening, allowing the drive component to pass through and directly act on the counterweight. In the initial position, the edge of the opening abuts against the drive component, providing a good seal. However, when the drive component moves to the trigger position, it pulls on the opening of the seal, causing deformation and creating a gap, leading to seal failure. In this case, the pressure relief valve will leak vents into the pot lid. The other type is a fully enclosed seal, where the counterweight and drive component are located on opposite sides of the seal, isolated by it. The drive component pushes the seal, deforming it to drive the counterweight, without direct contact between the drive component and the counterweight. Although the seal incorporates easily deformable structures, such as pleats, its overall thickness results in significant elasticity during deformation, pulling on other areas of the seal. The greater the deformation, the greater the pulling force, making the seal prone to significant deformation and disengagement, also causing seal failure. Therefore, some steam can still enter the pot lid, resulting in a poor seal. Utility Model Content

[0005] This utility model provides a lid assembly for a pressure cooking appliance and a pressure cooking appliance, to solve the problems of the seal at the pressure relief valve being set on the liner, which makes it unsuitable for all models of lids, making sealing installation difficult and resulting in poor versatility, and the elastic force generated when the seal is subjected to the force of the driving component, which easily causes the seal to deform significantly, leading to seal failure.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A pressure cooking appliance lid assembly includes a top cover and an inner cover disposed below the top cover. The top cover has a mounting position, and the mounting position has a pressure relief valve. The lid assembly also includes a drive member for driving the pressure relief valve to release air. A sealing member is fixed on the underside of the top cover corresponding to the mounting position. The sealing member includes a body and a bent thin wall. The thickness of the bent thin wall is less than the thickness of the body. The bent thin wall has a bent portion protruding toward the pressure relief valve. The drive member can push the bent portion to open the pressure relief valve.

[0008] In this invention, the sealing element is set on the face cover. For the pot lid assembly, the face cover is the outer appearance part of the pot lid assembly and is an essential component in all pot lid assemblies. Therefore, the arrangement of the sealing element on the face cover can adapt to various models, thereby improving the versatility of the sealing element arrangement.

[0009] Furthermore, the sealing element comprises a body and a bent thin-walled section. The counterweight and drive component of the pressure relief valve are located on both sides of the sealing element. The drive component acts indirectly on the counterweight by acting on the bent thin-walled section, thereby lifting the counterweight and allowing the pressure relief valve to release air. Simultaneously, the thickness of the bent thin-walled section is less than the thickness of the body, resulting in lower elasticity. This allows it to deform more easily when pushed by the drive component, thus pushing the counterweight, and also reduces the pulling force on the body. This prevents the body from undergoing significant deformation under the pulling force of the bent thin-walled section, ensuring the positional and orientational stability of the body. Consequently, when the sealing element is subjected to the force of the drive component, only the bent thin-walled section undergoes localized deformation, thus maintaining the entire sealing element in a sealed position and ensuring reliable sealing.

[0010] Furthermore, the bent thin-walled component features a bend protruding towards the pressure relief valve. This bend creates space on its outer side to accommodate the end of the drive component, resulting in a more compact arrangement between the drive component and the seal, reducing the space required. The bend design also ensures a more stable fit between the drive component and the bent thin-walled component, reducing slippage or positional misalignment during compression and making the drive of the counterweight and the deformation of the bent thin-walled component more reliable. Simultaneously, the bend design enhances the structural strength and deformation resistance at the connection between the bent thin-walled component and the main body, preventing breakage during deformation and further reducing the tensile force exerted by the bent thin-walled component on the main body, thus maintaining the main body's positional stability as much as possible.

[0011] The mounting position is provided with a downwardly recessed receiving groove, at least a portion of the pressure relief valve is located within the receiving groove, the receiving groove has a clearance notch on the side facing the drive component, the seal is sleeved on the outside of the receiving groove, and the bent thin wall is located within the clearance notch.

[0012] In this design, at least a portion of the pressure relief valve is located within the accommodating recess, preventing it from excessively protruding from the upper surface of the lid. This reduces the unsightly appearance of the lid assembly, improving its aesthetic quality, and also reduces the overall height of the lid assembly, contributing to a thinner and smaller design. The sealing element wraps around the outside of the accommodating recess from its lower side, simplifying installation. After installation, the seal's side abuts against the outer wall of the accommodating recess, and its bottom abuts against the outer bottom wall, forming a two-sided seal that significantly improves sealing performance and reduces the possibility of gas leakage. The driving element is located on one side of the accommodating recess, extending into it through a clearance notch. The body of the sealing element corresponds to the recess wall, and the bent thin wall corresponds to the clearance notch. This allows the driving element, extending into the clearance notch, to directly act on the bent thin wall, thereby actuating the pressure relief valve within the accommodating recess. Furthermore, the wall of the settling tank abuts against the main body, which can also support the main body and prevent the main body from deforming significantly and losing its sealing effect. The bending thin wall is designed to avoid the gap, making the bending thin wall more prone to deformation.

[0013] The mounting position has an opening for the pressure relief valve to pass through. A sealing part is provided on the lower side of the cover, surrounding the outer periphery of the opening. A mating part is provided on the top surface of the seal. One of the sealing part and the mating part is a sealing rib, and the other is a sealing groove that mates with the sealing rib.

[0014] In this design, the sealing part and the mating part are connected by ribs and grooves. This not only positions the seal during installation but also addresses the issue that, since the seal is a flexible material, deformation during installation can lead to inaccurate positioning and affect sealing performance. The positioning of the sealing ribs and grooves improves the accuracy of the seal's position and ensures a tight seal. Furthermore, it enhances the sealing stability of the seal and the cover, improving the sealing effect. In particular, the sealing part surrounds the outer circumference of the passage; its engagement with the mating part at this location effectively improves the sealing effect at the passage, reducing the risk of gas leakage at the pressure relief valve's passage point.

[0015] The seal has an opening corresponding to the through-hole, through which the pressure relief valve passes. The bottom surface of the seal has at least one sealing protrusion surrounding the opening, which abuts against the top surface of the inner cover for sealing.

[0016] In this design, after the pressure relief valve is fixed, the face cover and inner cover are tightened under the pre-tightening force. At this time, the inner cover and the sealing protrusion are firmly abutted, thereby forming a seal between the sealing element and the inner cover, preventing steam from escaping from the opening of the sealing element. Furthermore, the inner cover can also support the sealing element, preventing it from undergoing significant deformation.

[0017] The main body has fixing ribs on both sides of the bent thin wall, and fixing holes are provided in the fixing ribs. The cover is provided with fixing posts, and the fixing holes and fixing posts are used to fix it.

[0018] In this solution, since the wall thickness at the bending thin-wall section is relatively thin, the structure on both sides is relatively weak. By setting fixing ribs on both sides, and fixing holes on the fixing ribs cooperating with fixing posts on the faceplate for fixation, not only is the strength at both sides of the bending thin-wall section improved and the seal damaged, but it can also prevent the seal from flipping downwards and causing air leakage when the driving component acts on the bending thin-wall section.

[0019] The fixing post and the fixing hole are interference-fitted; or, the lid assembly also includes a fastener that passes through the fixing hole and is securely connected to the fixing post.

[0020] In this solution, since the sealing element is made of a flexible material, the fixing hole and the fixing post can be directly fixed together by interference fit, saving on the use of fasteners and reducing costs. Alternatively, the fixing rib and the fixing post can be securely connected by screws or other fasteners to ensure connection strength and stability and prevent slippage.

[0021] The body has reinforcing protrusions on both sides of the bent thin wall, and the reinforcing protrusions protrude toward the bent thin wall so that a passage for the drive component to extend into is formed between the reinforcing protrusions.

[0022] In this design, the reinforcing protrusions increase the thickness of the areas on both sides of the bent thin wall, thereby improving the structural strength and deformation resistance of these areas and preventing significant deformation of the main body during bending. Simultaneously, the reinforcing protrusions form an opening for the drive component to extend into, thus limiting the engagement between the drive component and the seal, preventing lateral swaying of the drive component, and triggering the bending of the thin wall in a stable and reliable position. This also makes the application of the pushing force on the bent thin wall more stable and reliable.

[0023] The raised section extends downwards to meet and fit against the top surface of the inner cover.

[0024] In this design, the protrusion extends downwards to abut against the top surface of the inner cover, making the structure and position of the sealing element more stable. This prevents the body from deforming downwards when the drive component pushes and bends the thin wall, thus affecting the sealing performance.

[0025] The bent thin-walled component includes a first extension extending inward from the side wall of the self-sealing component and a second extension extending upward from the bottom wall of the self-sealing component. The bent portion is located between the first extension and the second extension and is capable of moving up and down.

[0026] In this design, the first and second extension sections form an angle, creating a space below the bent thin wall to accommodate the end of the driving component, allowing the driving component to better push against the bent portion. Furthermore, when the driving component pushes the bent portion upwards, it contacts the pressure relief valve through the first extension section. The larger contact area between the first extension section and the pressure relief valve makes the force exerted by the driving component on the pressure relief valve more stable. Additionally, the first extension section is located on the side wall of the seal, and the second extension section is located on the bottom wall of the seal. Therefore, during the deformation of the bent thin wall, part of the tensile force is applied to the side wall of the seal, and part of the tensile force is applied to the bottom wall of the seal, thus dispersing the force application and further reducing the possibility of deformation of the body. This avoids the force concentrating on the bottom or side wall of the seal, which could cause significant deformation of the bottom or side of the seal and damage the seal.

[0027] This utility model also discloses a pressure cooking appliance, including a pot body and the aforementioned pot lid assembly. The inner lid and the pot body cooperate to form a cooking cavity, and a pressure relief valve is connected to the cooking cavity. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0029] Figure 1 This is a cross-sectional view of the face cover according to one embodiment of the present invention, wherein the driving member is in a state where the pressure relief valve is not lifted;

[0030] Figure 2 This is a cross-sectional view of the cover structure according to one embodiment of the present invention, wherein the driving member is in the state of lifting the pressure relief valve;

[0031] Figure 3 This is a schematic diagram of the structure of the lower side of the faceplate according to one embodiment of the present invention;

[0032] Figure 4 for Figure 3 A magnified view of area A in the middle;

[0033] Figure 5 This is a schematic diagram of the upper side of the faceplate according to one embodiment of the present invention;

[0034] Figure 6This is a schematic diagram of the lower side of the faceplate structure according to one embodiment of the present invention, in which the sealing element is not installed;

[0035] Figure 7 This is a schematic diagram of the upper side of the sealing element according to one embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the lower side of the sealing element according to one embodiment of the present invention;

[0037] Figure 9 This is a cross-sectional view of the sealing element according to one embodiment of the present invention;

[0038] Figure 10 This is a cross-sectional view of a portion of the pot lid assembly according to one embodiment of the present invention;

[0039] Figure 11 for Figure 10 A magnified view of area B in the middle;

[0040] Figure 12 This is a cross-sectional view of a portion of the pot lid assembly according to one embodiment of the present invention.

[0041] in:

[0042] 1. Cover; 11. Receiving groove; 111. Avoidance notch; 12. Fixing post; 13. Operating button; 14. Sealing rib; 15. Exit;

[0043] 2. Pressure relief valve; 21. Counterweight; 22. Exhaust pipe;

[0044] 3. Drive components;

[0045] 4. Seal; 41. Body; 42. Bending thin wall; 421. Bending portion; 422. First extension; 423. Second extension; 43. Reinforcing protrusion; 431. Through port; 44. Fixing rib; 441. Fixing hole; 45. Opening; 46. Sealing groove; 47. Sealing protrusion;

[0046] 5. Inner cover. Detailed Implementation

[0047] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0049] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] like Figure 1 , Figure 2 As shown, a pressure cooking appliance lid assembly includes a top cover 1 and an inner cover 5 disposed below the top cover 1. The top cover 1 has a mounting position, and a pressure relief valve 2 is disposed at the mounting position. The lid assembly also includes a drive member 3 for driving the pressure relief valve 2 to release air. A sealing member 4 is fixed on the lower side of the top cover 1 corresponding to the mounting position. The sealing member 4 includes a body 41 and a bent thin wall 42. The thickness of the bent thin wall 42 is less than the thickness of the body 41. The bent thin wall 42 has a bent portion 421 protruding toward the pressure relief valve 2. The drive member 3 can push the bent portion 421 to open the pressure relief valve 2.

[0053] Specifically, such as Figures 1 to 5As shown, the mounting position is located on the top surface of the cover 1, and the sealing element 4 is fixed to the lower side of the top surface of the cover 1. The pressure relief valve 2 includes an exhaust pipe 22 and a counterweight 21 placed at the top of the exhaust pipe 22. The exhaust pipe 22 passes through the inner cover 5, the sealing element 4, and the cover 1, and the counterweight 21 is located on the upper side of the top surface of the cover 1. The counterweight 21 can be driven upward by the driving element 3, thereby opening the exhaust pipe 22 to exhaust gas. Since the counterweight 21 is located on the upper side of the cover 1, and the sealing element 4 is provided on the lower side of the cover 1, the steam, bubbles, etc. ejected from the top of the exhaust pipe 22 cannot reach the lower side of the sealing element 4, that is, below the cover 1.

[0054] In one embodiment, such as Figure 1 , Figure 2 , Figure 5 As shown, the face cover 1 is provided with an operation button 13. The drive member 3 is rotatably connected to the face cover 1, and one end of the drive member 3 is located below the operation button 13, while the other end cooperates with the bent thin wall 42. When the user manually presses the operation button 13, the operation button 13 presses one end of the drive member 3, causing the drive member 3 to rotate around the connection, so that the other end is lifted up, thereby driving the bent thin wall 42 to lift the hammer 21.

[0055] In another embodiment, the cover 1 is also provided with a solenoid valve, which can automatically control the movement of the drive component 3 through program settings, thereby lifting the hammer 21.

[0056] Alternatively, in other embodiments, the drive unit 3 may also lift the weight 21 by lateral translation or vertical floating, which is not limited here.

[0057] In this utility model, the sealing element 4 is disposed on the face cover 1. For the pot lid assembly, the face cover 1 is the outer appearance part of the pot lid assembly and is an indispensable component in all pot lid assemblies. Therefore, the arrangement of the sealing element 4 on the face cover 1 can adapt to various models, thereby improving the versatility of the arrangement of the sealing element 4.

[0058] The sealing element 4 includes a body 41 and a bent thin wall 42. The counterweight 21 of the pressure relief valve 2 and the driving element 3 are located on both sides of the sealing element 4. The driving element 3 indirectly acts on the counterweight 21 by acting on the bent thin wall 42, thereby lifting the counterweight 21 and allowing the pressure relief valve 2 to release air. At the same time, the thickness of the bent thin wall 42 is less than the thickness of the body 41, resulting in a smaller elasticity of the bent thin wall 42. This not only makes it easier to deform and push the counterweight 21 when pushed by the driving element 3, but also reduces the pulling force on the body 41. This prevents the body 41 from undergoing significant deformation under the pulling action of the bent thin wall 42, thus ensuring the positional and posture stability of the body 41. When the sealing element 4 is subjected to the force of the driving element 3, only the bent thin wall 42 undergoes local deformation, thereby keeping the sealing element 4 in a sealed position and ensuring sealing reliability.

[0059] The bent thin-walled component 42 has a bent portion 421 protruding towards the pressure relief valve 2. Because the bent portion 421 protrudes towards the pressure relief valve 2, a space is formed on the outer side of the bent portion 421 to accommodate the end of the drive member 3, making the position of the drive member and the seal 4 more compact and reducing the space occupied. Furthermore, the design of the bent portion 421 makes the fit between the drive member and the bent thin-walled component 42 more stable, reducing the possibility of slippage or positional displacement during the compression process, making the drive of the drive member 3 on the counterweight 21 and the deformation of the bent thin-walled component 42 more reliable. At the same time, the bending design also improves the structural strength and deformation resistance of the connection between the bent thin-walled component 42 and the body 41, as well as the contact position between the bent portion 421 and the drive member 3, preventing damage during deformation of the bent thin-walled component 42 and further reducing the tensile force of the bent thin-walled component 42 on the body 41, thus keeping the body 41 as stable as possible.

[0060] Preferably, such as Figures 2 to 6 As shown, the mounting position is provided with a downwardly recessed receiving groove 11, at least a portion of the pressure relief valve 2 is located within the receiving groove 11, the receiving groove 11 is provided with a clearance notch 111 on the side facing the drive member 3, the sealing member 4 is sleeved on the outside of the receiving groove 11, and the bent thin wall 42 is located within the clearance notch 111.

[0061] At least a portion of the pressure relief valve 2 is located within the receiving recess 11, so that the pressure relief valve 2 does not protrude excessively from the upper surface of the lid 1. This reduces the abruptness of the lid assembly's appearance and improves its aesthetic quality. On the other hand, it also reduces the overall height of the lid assembly, which is conducive to a thinner and smaller design.

[0062] Specifically, such as Figure 3 As shown, the seal 4 has a bottom wall and a side wall. The bottom wall abuts against the outer bottom wall of the receiving sink 11, and the side wall abuts against the outer side wall of the receiving sink 11 for sealing.

[0063] The seal 4 is wrapped around the outside of the receiving sink 11 from the lower side, making the installation of the seal 4 simpler and more convenient. After the seal 4 is installed, its side abuts against the outer wall of the receiving sink 11 and seals, and its bottom abuts against the outer bottom wall of the receiving sink 11, forming a two-sided seal, which greatly improves the sealing effect and reduces the possibility of gas leakage.

[0064] The driving component 3 is located on one side of the receiving trough 11 and extends into the receiving trough 11 through the clearance notch 111. The body 41 of the sealing component 4 corresponds to the trough wall of the receiving trough 11, and the bent thin wall 42 corresponds to the clearance notch 111. This allows the driving component 3, extending into the clearance notch 111, to directly act on the bent thin wall 42, thereby driving the pressure relief valve 2 within the receiving trough 11. Furthermore, the trough wall of the receiving trough 11 abuts against the body 41, providing support for the body 41 and preventing it from deforming significantly and losing its sealing effect. The bent thin wall 42, corresponding to the clearance notch 111, makes it easier for the bent thin wall 42 to deform.

[0065] It should be noted that this utility model does not limit the location of the bent thin-walled section 42. In a preferred embodiment, such as... Figure 9 As shown, the bent thin wall 42 includes a first extension 422 extending inward from the side wall of the sealing member 4 and a second extension 423 extending upward from the bottom wall of the sealing member 4. The bent portion 421 is located between the first extension 422 and the second extension 423 and is capable of moving up and down.

[0066] The first extension 422 and the second extension 423 form an angle, thereby creating a space below the bent thin wall 42 to accommodate the end of the driving member 3, allowing the driving member 3 to better push against the bent portion 421. Furthermore, when the driving member 3 pushes the bent portion 421 upwards, it contacts the pressure relief valve 2 through the first extension 422. The contact area between the first extension 422 and the pressure relief valve 2 is relatively large, making the force exerted by the driving member 3 on the pressure relief valve 2 more stable. In addition, the first extension 422 is located on the side wall of the seal 4, and the second extension 423 is located on the bottom wall of the seal 4. Therefore, when the bent thin wall 42 deforms, part of the pulling force is applied to the side wall of the seal 4, and part of the pulling force is applied to the bottom wall of the seal 4, thus dispersing the force application and further reducing the possibility of deformation of the body 41. This avoids the force being concentrated on the bottom or side wall of the seal 4, preventing large-scale deformation of the bottom or side of the seal 4 and thus damaging the seal.

[0067] Specifically, such as Figure 9 As shown, the first extension segment 422 extends obliquely upward, and the second extension segment 423 extends towards the direction close to the first extension segment 422. Since the movement of the driving member 3 is an oscillation around the connection point, the movement trajectory of its end is not vertical up and down, but an arc trajectory. By designing the extension directions of the first extension segment 422 and the second extension segment 423 in this way, the overall structure of the bent thin wall 42 is made to better conform to the movement trajectory of the driving member 3, thereby making the cooperation between the driving member 3 and the bending part 421 more reliable and stable.

[0068] As a preferred embodiment of this utility model, such as Figure 6, Figure 7 As shown, the mounting position has an opening 15 through which the pressure relief valve 2 passes. A sealing part is provided on the lower side of the cover 1, surrounding the outer periphery of the opening 15. A mating part is provided on the top surface of the seal 4. One of the sealing part and the mating part is a sealing rib 14, and the other is a sealing groove 46 that mates with the sealing rib 14.

[0069] The sealing part and the mating part are engaged by the ribs and grooves, which not only position the seal 4 during installation, but also improve the sealing performance by addressing the issue that the seal 4, being a flexible material, is prone to deformation during installation, which can lead to inaccurate positioning. The positioning of the sealing ribs 14 and 46 ensures the seal 4's accurate placement and guarantees a tight seal. Furthermore, it enhances the sealing stability of the seal 4 and the faceplate 1, improving the sealing effect. In particular, the sealing part surrounds the passage 15, and its engagement with the mating part at this location effectively improves the sealing effect at the passage 15, reducing the risk of gas leakage at the point where the pressure relief valve 2 passes through.

[0070] Specifically, such as Figure 6 , Figure 7 As shown, the sealing part is an annular sealing rib 14, and the mating part is an annular sealing groove 46. Of course, the sealing part can also be set as a sealing groove 46, and the mating part can be set as a sealing rib 14 accordingly; this is not limited here.

[0071] like Figure 8 , Figure 10 , Figure 11 As shown, the seal 4 is provided with an opening 45 corresponding to the through 15, the pressure relief valve 2 passes through the opening 45, and the bottom surface of the seal 4 is provided with at least one sealing protrusion 47 surrounding the opening 45, the sealing protrusion 47 abuts and seals with the top surface of the inner cover 5.

[0072] After the pressure relief valve 2 is fixed, the face cover 1 and the inner cover 5 are tightened under the pre-tightening force. At this time, the inner cover 5 and the sealing protrusion 47 are firmly abutted, thereby forming a seal between the sealing element 4 and the inner cover 5, preventing steam from escaping from the opening 45 of the sealing element 4. In addition, the inner cover 5 can also support the sealing element 4, preventing the sealing element 4 from undergoing large deformation.

[0073] Specifically, such as Figure 8 , Figure 10 , Figure 11 As shown, there are two sealing protrusions 47, one located at the edge of the opening 45 and the other at the edge of the seal 4, thus forming two sealing rings in sequence along the radially outward direction of the opening 45. This further increases the difficulty of gas leakage and improves the support effect on the seal 4, preventing large-scale deformation.

[0074] Of course, the number of sealing protrusions 47 can be one or more, and their positions can be anywhere on the bottom surface of the seal 4, as long as they surround the outer periphery of the opening 45. For example, multiple sealing protrusions 47 can be arranged at radial intervals along the seal 4, which is not limited here.

[0075] In a preferred embodiment, such as Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 As shown, the main body 41 has fixing ribs 44 on both sides of the bent thin wall 42, and fixing ribs 44 have fixing holes 441. The cover 1 has fixing posts 12, and the fixing holes 441 and fixing posts 12 are fixed together.

[0076] Because the wall thickness at the bending thin wall 42 is relatively thin, the structure on both sides is relatively weak. By setting fixing ribs 44 on both sides, and fixing holes 441 on the fixing ribs 44 cooperating with fixing posts 12 on the cover 1 to fix it, not only is the strength at both sides of the bending thin wall 42 improved and the seal 4 damaged, but it can also prevent the seal 4 from flipping downwards and leaking air when the driving member 3 acts on the bending thin wall 42.

[0077] This embodiment does not limit the way the fixing hole 441 and the fixing post 12 are fitted, and includes, but is not limited to, the situations listed in the following embodiments:

[0078] Example 1: In this example, as Figure 4 As shown, the fixing post 12 and the fixing hole 441 are interference-fitted. Since the sealing element 4 is made of flexible material, the fixing hole 441 and the fixing post 12 can be directly fixed by interference fit, which saves the use of fasteners and reduces costs.

[0079] Example 2: In this example, the pot lid assembly also includes fasteners that pass through the fixing hole 441 and are securely connected to the fixing post 12. The fixing rib 44 and the fixing post 12 are securely connected by screws or other fasteners to ensure connection strength and stability and prevent slippage.

[0080] Preferably, such as Figure 4 , Figure 8 As shown, the main body 41 has reinforcing protrusions 43 on both sides of the bent thin wall 42. The reinforcing protrusions 43 protrude toward the bent thin wall 42 so that a passage 431 for the drive member 3 to extend into is formed between the reinforcing protrusions 43.

[0081] The reinforcing protrusion 43 increases the thickness of the areas on both sides of the bent thin wall 42, thereby improving the structural strength and deformation resistance of the areas on both sides of the bent thin wall 42 and preventing the main body 41 from undergoing large-scale deformation when the bent thin wall 42 deforms. At the same time, the reinforcing protrusion 43 forms a passage 431 for the drive member 3 to extend into, thus also limiting the engagement between the drive member 3 and the sealing member 4, preventing the drive member 3 from lateral swaying, thereby triggering the bent thin wall 42 in a stable and reliable position, and making the position of the pushing force on the bent thin wall 42 more stable and reliable.

[0082] Furthermore, such as Figure 12 As shown, the reinforcing protrusion 43 extends downward to abut against the top surface of the inner cover 5.

[0083] The protrusion 43 extends downward to abut against the top surface of the inner cover 5, making the structure and position of the body 41 of the seal 4 more stable. This prevents the body 41 from deforming downward when the drive member 3 pushes and bends the thin wall 42, thus affecting the sealing performance.

[0084] This utility model also discloses a pressure cooking appliance, including a pot body and the aforementioned pot lid assembly. The inner lid 5 cooperates with the pot body to form a cooking cavity, and the pressure relief valve 2 is connected to the cooking cavity.

[0085] like Figure 1 , Figure 2 As shown, the pressure relief valve 2 includes a counterweight 21 and an exhaust pipe 22. The exhaust pipe 22 is fixed to the inner cover 5 and extends upward through the seal 4 and the top cover 1 to the outside of the top cover 1, connecting the inside and outside of the pot. The counterweight 21 is located at the top of the exhaust pipe 22.

[0086] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0087] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0088] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A pot cover assembly of a pressure cooker, comprising a face cover and an inner cover arranged below the face cover, the face cover is provided with a mounting position, the mounting position is provided with a pressure relief valve, characterized in that the pot cover assembly further comprises a driving member for driving the pressure relief valve to exhaust, a sealing member is fixed on the lower side of the face cover corresponding to the mounting position, the sealing member comprises a body and a bent thin wall, the thickness of the bent thin wall is smaller than the thickness of the body, the bent thin wall has a bending part protruding towards the pressure relief valve, and the driving member can push the bending part to open the pressure relief valve.

2. The pot cover assembly of the pressure cooker according to claim 1, characterized in that the mounting position is provided with a downwardly recessed accommodating groove, at least a part of the pressure relief valve is located in the accommodating groove, a side of the accommodating groove towards the driving member is provided with an avoiding gap, the sealing member is sleeved outside the accommodating groove, and the bent thin wall is located in the avoiding gap.

3. The pot cover assembly of the pressure cooker according to claim 1, characterized in that the mounting position has a through opening for the pressure relief valve to pass through, the lower side of the face cover is provided with a sealing part surrounding the outer periphery of the through opening, the top surface of the sealing member is provided with a matching part, one of the sealing part and the matching part is a sealing protrusion, and the other is a sealing groove matched with the sealing protrusion.

4. The pot cover assembly of the pressure cooker according to claim 3, characterized in that the sealing member is provided with an opening corresponding to the through opening, the pressure relief valve passes through the opening, and the bottom surface of the sealing member is provided with at least one sealing protrusion surrounding the opening, the sealing protrusion abuts against and seals the top surface of the inner cover.

5. The pot cover assembly of the pressure cooker according to claim 1, characterized in that the body is provided with a fixed rib position on both sides of the bent thin wall, the fixed rib position is provided with a fixed hole, the face cover is provided with a fixed column, and the fixed hole and the fixed column are matched and fixed.

6. The pot cover assembly of the pressure cooker according to claim 5, characterized in that the fixed column and the fixed hole are interference-fitted; or the pot cover assembly further comprises a fastener, and the fastener is fastened and connected with the fixed column through the fixed hole.

7. The pot cover assembly of the pressure cooker according to claim 1, characterized in that the body is provided with a reinforcing protrusion on both sides of the bent thin wall, the reinforcing protrusion protrudes towards the bent thin wall, so that the reinforcing protrusions form a through opening for the driving member to extend into.

8. The pot cover assembly of the pressure cooker according to claim 7, characterized in that the reinforcing protrusions extend downwards to abut against and match the top surface of the inner cover.

9. The pot cover assembly of the pressure cooker according to claim 1, characterized in that the bent thin wall comprises a first extension section extending inwards from the side wall of the sealing member and a second extension section extending upwards from the bottom wall of the sealing member, the bending part is located between the first extension section and the second extension section and can move up and down. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 10. A pressure cooking appliance comprising a pot body, characterized in that, Further comprising the pot cover assembly according to any one of claims 1-9, the inner cover and the pot body cooperatively defining a cooking cavity, and the pressure relief valve being in communication with the cooking cavity.

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