A separable sealing ring, a pot cover and a pressure cooker

Abstract

The utility model discloses a separable sealing ring, pot cover and pressure cooker relates to the kitchen utensil technical field. Specifically including an outer ring, an upper lip and a lower lip, the outer ring is used for the movable installation on the pot ring spare of pressure cooker, the upper lip extends from the upper portion of outer ring, and the upper lip is used for the cover body contact seal with the pot cover, the lower lip extends from the lower portion of outer ring, and the lower lip is used for the body contact seal with the pot of pressure cooker. The outer ring is designed as the movable installation structure in the application, makes the detachable connection between sealing ring and pot cover, when sealing ring is damaged, and user can replace sealing ring alone, need not to replace the whole pot cover, has reduced use cost significantly, and has greatly facilitated the disassembly and cleaning maintenance of user, solves the sealing ring of existing pressure cooker cover and the integral fixing of pot cover, leads to sealing ring aging damage and must replace the whole pot cover, and the use cost is high and not easy to clean.

Description

Technical Field

[0001] This utility model relates to the field of cookware technology, and in particular to a detachable sealing ring, a pot lid, and a pressure cooker. Background Technology

[0002] Pressure cookers are common kitchen appliances that increase the boiling point of water by raising the pressure inside the pot, thereby speeding up the cooking process. Some pressure cookers also have a negative pressure vacuum function, and pots with these vacuum functions are called vacuum micro-pressure cookers.

[0003] The key component for achieving micro-pressure and vacuum functions in vacuum pressure cookers is the sealing ring on the lid. In existing vacuum pressure cooker designs, the sealing ring on the lid is usually fixedly connected to the lid, meaning the lid and sealing ring are designed as an integral structure that cannot be disassembled by the user.

[0004] However, as an elastic component, the sealing ring inevitably ages, deforms, breaks, or needs replacement due to absorbing food odors over time. Since the sealing ring is fixed to the lid, when it fails or breaks, users cannot replace only the sealing ring and are forced to replace the entire lid, significantly increasing long-term usage costs and maintenance burdens. Furthermore, this fixed connection makes it difficult to thoroughly clean the gap between the sealing ring and the metal edge of the lid, easily trapping dirt and bacteria, posing a potential food safety hazard.

[0005] Therefore, this application aims to solve the problem of difficult disassembly of the sealing ring in pressure cookers, and the problem of dirt and bacteria accumulating between the sealing ring and the lid. Utility Model Content

[0006] The main purpose of this utility model is to provide a detachable sealing ring, pot lid, and pressure cooker, which aims to make the sealing ring in the pressure cooker removable, thereby reducing the maintenance burden of the sealing ring and effectively avoiding the problem of dirt and grime accumulating between the sealing ring and the pot lid.

[0007] To achieve the above objectives, this utility model proposes a separable sealing ring, which is used in a pressure cooker and includes: An outer ring, which is movably mounted on the pot ring of the pressure cooker; An upper lip, extending from the upper part of the outer ring, is used to contact and seal with the lid body of the pot lid; and A lower lip extends from the lower part of the outer ring and is used to seal against the pressure cooker body.

[0008] Furthermore, the sealing ring also includes a lower ring that extends from the lower end of the lower lip and is used to contact and seal the inner edge of the pot body.

[0009] Furthermore, the upper lip has an outer surface on the side wall away from the outer ring, and the lower lip has an outer surface on the side wall away from the outer ring; both the outer surface of the upper lip and the outer surface of the lower lip are smooth surfaces, and are used to contact and seal the lid and the pot body, respectively.

[0010] Furthermore, the upper lip has an inner surface on the side wall facing the outer ring, and the lower lip has an inner surface on the side wall facing the outer ring. The outer ring has a top surface on the side wall facing the upper lip and a bottom surface on the side wall facing the lower lip. The inner surface of the upper lip, the inner surface of the lower lip, the top surface of the outer ring, and the bottom surface of the outer ring are all rough surfaces.

[0011] This application also discloses a pot lid, which is used in a pressure cooker and includes: a lid body, a pot ring, and a sealing ring; The pot ring is placed around the periphery of the lid and is fixedly connected to the lid; The sealing ring is movably sleeved on the pot ring component and is detachably connected to the pot ring component; The sealing ring includes: The upper lip abuts against the cover to seal it. The lower lip abuts against the body of the sealed pressure cooker.

[0012] Furthermore, the lid includes a lid edge; the pot ring includes an upper U-shaped ring and a lower U-shaped ring; The U-shaped upper ring is fixedly sleeved on the edge of the cover; The sealing ring also includes an outer ring, which is disposed between the upper lip and the lower lip, and is movably fitted inside the U-shaped lower ring.

[0013] Furthermore, the pot ring component includes an integrally connected outer ring wall and an inner ring, wherein the outer ring wall includes an outer upper edge; The inner ring includes an inner upper edge and an inner lower edge, which together form the U-shaped lower ring; The outer upper edge and the inner upper edge together form the U-shaped upper ring.

[0014] Furthermore, the pot ring also includes an outer lower edge; the sealing ring also includes a lower ring disposed below the lower lip; The lower ring is in contact with and sealed to the inner edge of the pot body; A lower air jet channel is formed between the lower outer edge and the outer edge of the pot body.

[0015] This application discloses a pressure cooker, comprising: The pot body; and As described above, the pot lid is detachably placed over the opening of the pot body.

[0016] Furthermore, the pot body has an upper edge, an outer edge, and an inner edge, the upper edge being the open end face of the pot body, and the inner edge and the outer edge being respectively located on the inner and outer sides of the upper edge. The lower lip of the sealing ring abuts and seals against the upper side of the pot; A lower air jet channel is formed between the lower outer edge of the pot ring and the outer edge of the pot; The lower ring of the sealing ring abuts and seals against the inner edge of the pot; And / or, the pressure cooker is a vacuum micro-pressure cooker, in which the upper lip abuts and seals against the lid when a negative pressure is formed inside the cooker.

[0017] The above technical solution has the following advantages: The detachable sealing ring provided in this application has an upper lip for sealing the lid and a lower lip for sealing the pot body, while the outer ring is movably fitted onto the pressure cooker's pot ring component. This fundamentally solves the problem of the sealing ring being integrally fixed to the pot lid and non-removable. When the sealing ring ages, breaks, or requires deep cleaning, the user can easily remove it from the pot ring component for individual replacement or maintenance, without having to replace the entire pot lid. This not only greatly reduces the user's long-term use and maintenance costs but also facilitates thorough cleaning, eliminating the hygiene hazards caused by dirt and grime accumulation.

[0018] By employing a double-lip sealing structure with upper and lower lips, a reliable seal can be formed between the lid and the pot body under both positive and negative pressure conditions inside the pot, making it particularly suitable for vacuum pressure cookers. The lower ring of the sealing ring serves as a guide and positioner during installation and also assists in sealing. The pot lid's ring component can also have an outer lower edge, which, in conjunction with the pot body, forms a lower steam jet channel. This channel guides steam downwards in the event of abnormal pressure release, preventing horizontal jetting that could scald the user.

[0019] The inner surfaces of the upper and lower lips of the sealing ring are roughened, while the outer surfaces of the upper and lower lips of the outer sealing ring are smooth. This effectively prevents the sealing lips from sticking together after long-term pressure, ensuring their rebound and guaranteeing the reliability of the seal. Attached Figure Description

[0020] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is an exploded structural diagram of the pot lid of this utility model; Figure 4 This is a partial cross-sectional view of the sealing ring of this utility model; Figure 5 This utility model Figure 4 Enlarged view of point B in the middle; Figure 6 This is a cross-sectional structural diagram of the pot lid of this utility model; Figure 7 This utility model Figure 6 Enlarged view of point C in the middle; Figure 8 This is a partial structural diagram of the sealing ring of this utility model.

[0021] In the diagram: 1. Pot body; 11. Top edge of the pot; 12. Outer edge of the pot; 13. Inner edge of the pot; 2. Pot lid; 3. Lid body; 31. Lid edge; 4. Pot ring component; 41. Outer ring wall; 42. Outer upper edge; 43. Outer lower edge; 44. U-shaped upper ring; 45. Inner ring; 46. Inner upper edge; 47. Inner lower edge; 48. U-shaped lower ring; 5. Sealing ring; 51. Upper lip; 511. Outer surface of the upper lip; 512. Inner surface of the upper lip; 52. Lower lip; 521. Inner surface of the lower lip; 522. Outer surface of the lower lip; 53. Outer ring; 531. Top of the outer ring; 532. Bottom of the outer ring; 54. Lower ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0023] This utility model embodiment is mainly used in pressure cookers, especially in vacuum micro-pressure cookers. Its core purpose is to provide a structure in which the sealing ring 5 and the pot lid 2 can be separated, so as to solve the problem that in the prior art, the sealing ring 5 and the pot lid 2 are fixed together, which leads to the user having to replace the entire pot lid 2 after the sealing ring 5 ages or is damaged, thereby increasing the cost of use.

[0024] In addition, this application features a special design for the structure of the sealing ring 5, making it more suitable for sealing under both positive and negative pressure in the vacuum pressure cooker, thus better meeting the usage environment of the vacuum pressure cooker. The specific sealing ring 5, lid 2, and pressure cooker are as follows: like Figures 1 to 8As shown, this application discloses a detachable sealing ring 5, a pot lid 2 using the sealing ring 5, and a pressure cooker using the pot lid 2. The specific solutions are as follows: like Figure 2 , Figures 3 to 5 As shown, a separable sealing ring 5 is applied to the lid 2 of a pressure cooker. The sealing ring 5 includes an outer ring 53, an upper lip 51, and a lower lip 52. The outer ring 53 is movably mounted on the pot ring 4 of the pressure cooker. The upper lip 51 extends from the upper part of the outer ring 53 and is used to contact and seal with the lid 3 of the lid 2. The lower lip 52 extends from the lower part of the outer ring 53 and is used to contact and seal with the pot body 1 of the pressure cooker.

[0025] Example 1: Reference Figure 4 and Figure 5 As shown, the sealing ring 5 in this embodiment is an integrally injection-molded elastic component. For example, it can be made of food-grade silicone rubber or fluororubber to ensure high temperature resistance, corrosion resistance, and good resilience. The outer ring 53 is the main structural part of the sealing ring 5. It is designed for movable installation, mainly to achieve a detachable function. The shape of the outer ring 53 is designed to match a groove on the pot ring part 4, and it is placed or fitted into the groove of the pot ring part 4 by its own shape and elasticity, rather than being fixed by adhesives, welding, or permanent clips as in the prior art. Users can remove the sealing ring 5 from the pot ring part 4 by hand at any time for cleaning or replacement. When it ages or breaks, only a new sealing ring 5 needs to be purchased, without replacing the entire pot lid 2, which significantly reduces maintenance costs.

[0026] The upper lip 51 is a flexible lip extending from the upper part of the outer ring 53. The upper lip 51 is usually slanted. When the sealing ring 5 is installed on the lid 2, the tip of the upper lip 51 will bend and conform to the edge 31 of the lid body 3, as shown below. Figure 2 The contact surfaces of the cover edge 31, cover body 3, and upper lip 51 are shown.

[0027] The lower lip 52 is another flexible lip extending from the lower part of the outer ring 53. The lower lip 52 is also slanted. When the lid 2 is placed on the pot body 1, the lower lip 52 will bend and press against the open end face of the pot body 1, as shown below. Figure 2 The contact surface between the lower lip 52 and the pot body 1 is shown.

[0028] In this embodiment, the sealing ring 5 adopts a multi-layer structure design of upper lip 51, outer ring 53 and lower lip 52, which enables the sealing ring 5 to form a reliable seal for the lid 3 and the pot 1. The movable installation design of the outer ring 53 ensures that the sealing ring 5 is easy to disassemble and clean.

[0029] Example 2: like Figure 2As shown, in another embodiment, the outer ring 53 may not be a solid structure, but rather have a hollow cross-section or a C-shaped cross-section. This reduces the amount of silicone material used, lowers costs, and provides greater elastic deformation space while ensuring the structural stability of the outer ring 53. Correspondingly, the corresponding groove on the pot ring component 4 is no longer a U-shaped groove, but a T-shaped protrusion. The C-shaped outer ring 53 can be snapped onto the T-shaped protrusion. This embodiment also achieves a detachable connection between the sealing ring 5 and the pot ring component 4, but uses a different mechanical engagement method, and the outer ring 53 itself can also provide a certain cushioning effect when pressed.

[0030] like Figures 2 to 5 As shown, the sealing ring 5 also includes a lower ring 54, which extends from the lower end of the lower lip 52 and is used to contact and seal on the inner edge 13 of the pot body 1.

[0031] The lower ring 54 is the lowest extension of the sealing ring 5, and is typically designed as a vertical or slightly tapered annular skirt. When the user places the lid 2 onto the pot body 1, the lower ring 54 enters the opening of the pot body 1 before the lower lip 52. The lower ring 54 contacts the inner wall of the pot body 1, which is the inner edge 13 of this application. The lower ring 54 acts as a guide, helping the user quickly align the lid 2 and place it stably in the center of the pot body 1. At the same time, the contact between the lower ring 54 and the inner edge 13 of the pot effectively assists in sealing or blocking, preventing the soup inside the pot from splashing between the lower lip 52 and the sealing surface of the upper edge 11 of the pot body 1 when boiling, ensuring the cleanliness of the sealing surface and ensuring a reliable seal between the lower lip 52 and the pot body 1.

[0032] like Figures 2 to 5 as well as Figure 8 As shown, the upper lip 51 has an outer surface 511 on the side wall away from the outer ring 53, and the lower lip 52 has an outer surface 522 on the side wall away from the outer ring 53; both the outer surface 511 and the outer surface 522 are smooth surfaces and are used to contact the sealing cover 3 and the pot body 1, respectively.

[0033] The outer surfaces of the upper lip 511 and lower lip 522 are the core sealing surfaces for the sealing ring 5 to achieve its sealing function. Airtight and liquid-tight barriers must be formed on the outer surfaces of the upper and lower lip 511 and 522 to ensure high airtightness. During mold manufacturing, the mold cavity surfaces corresponding to the outer surfaces of the upper and lower lip 511 and 522 are polished to a mirror finish or high gloss. Therefore, the injection-molded sealing ring 5 has smooth surfaces on the outer surfaces of the upper and lower lip 511 and 522. These smooth surfaces maximize the contact area with the lid edge 31 and the upper edge 11 of the pot body 1, eliminating microscopic gaps and ensuring high airtightness under both positive and negative pressure cooking.

[0034] like Figures 2 to 5 as well as Figure 8 As shown, the upper lip 51 has an inner surface 512 on one side wall facing the outer ring 53, and the lower lip 52 has an inner surface 521 on one side wall facing the outer ring 53; the outer ring 53 has an upper surface 531 on one side wall facing the upper lip 51, and an lower surface 532 on one side wall facing the lower lip 52; the inner surface 512 of the upper lip, the inner surface 521 of the lower lip, the upper surface 531 of the outer ring, and the lower surface 532 of the outer ring are all rough surfaces.

[0035] The inner surface 512 of the upper lip, the inner surface 521 of the lower lip, the upper surface 531 of the outer ring, and the lower surface 532 of the outer ring are the internal surfaces of the sealing ring 5, and none of these internal surfaces participate in the external sealing. To prevent the upper lip 51 and lower lip 52 of the sealing ring 5 from sticking to the outer ring 53 under long-term pressure or high temperature, the mold cavity surfaces corresponding to the inner surfaces 512 of the upper lip, 521 of the lower lip, 531 of the upper ring, and 532 of the outer ring are roughened during mold manufacturing. For example, this can be achieved through electrical discharge machining (EDM) or sandblasting to create a textured or frosted finish, resulting in the roughened surfaces of the inner surfaces 512 of the upper lip, 521 of the lower lip, 531 of the upper ring, and 532 of the outer ring. This roughness reduces the actual contact area between the silicone components. When the upper lip 51 or lower lip 52 is bent under pressure, the inner surfaces 512 of the upper lip, 531 of the upper ring, 521 of the lower lip, and 532 of the lower ring will not adhere tightly or stick together. This ensures that the upper lip 51 and lower lip 52 can quickly spring back to their original position after the pressure is released, maintaining their elasticity and sealing performance, and avoiding seal failure caused by adhesion. At the same time, this rough surface treatment also helps users distinguish between the inner and outer sides during installation.

[0036] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a pot lid 2 is used in a pressure cooker. It includes a lid body 3, a pot ring 4, and a sealing ring 5. The pot ring 4 is placed around the periphery of the lid body 3 and is fixedly connected to the lid body 3. The sealing ring 5 is movably sleeved on the pot ring 4 and is detachably connected to the pot ring 4. The sealing ring 5 includes an upper lip 51 and a lower lip 52. The upper lip 51 abuts upward against the sealing lid body 3. The lower lip 52 abuts downward against the sealing pot body 1 of the pressure cooker.

[0037] The pot lid 2 in this embodiment is structurally divided into three core components: the lid body 3, the pot ring 4, and the sealing ring 5. The lid body 3 is the main body of the pot lid 2, and is usually made of transparent tempered glass or stainless steel. The pot ring 4 is a ring-shaped metal component, such as stainless steel, which acts as the skeleton between the lid body 3 and the sealing ring 5. The pot ring 4 is fixedly connected to the periphery of the lid body 3, that is, to the lid edge 31 of this application, by an integral connection.

[0038] The sealing ring 5 is a separable sealing ring 5 as described above. The pot ring part 4 and the lid body 3 are fixedly connected, while the sealing ring 5 and the pot ring part 4 are detachably connected by a movable sleeve.

[0039] The lid body 3 and the pot ring 4 of the pot lid 2 are integrally connected. The sealing ring 5, as a consumable component, is independently installed inside the pot ring 4. Specifically, the pot ring 4 provides a mounting groove for the sealing ring 5, and the sealing ring 5 is embedded in the mounting groove by its outer ring 53. When the sealing ring 5 ages, breaks, or requires deep cleaning, the user can easily remove the sealing ring 5 from the pot ring 4, while the lid body 3 and the pot ring 4, as durable components, remain unchanged. This effectively avoids the problem of having to replace the entire pot lid 2 in the prior art, saving maintenance costs.

[0040] In another embodiment, the lid 3 and the pot ring 4 can be manufactured as a single, integral component. The aim is to eliminate assembly steps and potential seams between the lid 3 and the pot ring 4, simplifying the structure. Specifically, a single stainless steel sheet is used as the production material, and the lid 3 is formed in one stamping process using a deep drawing technique. A U-shaped lower ring 48 structure for accommodating the sealing ring 5 is directly stamped and folded at its edge. Figure 6 and Figure 7 As shown. At this point, the lid 3 and the pot ring 4 are physically the same component, and the pot ring 4 is fixedly connected to the lid 3 by integral molding. This embodiment makes the structure of the lid 3 and the pot ring 4 more robust, easier to clean, and eliminates the gap between the lid 3 and the pot ring 4. However, the sealing ring 5 is still movably fitted in the U-shaped lower ring 48 on the edge of the integral lid 3, and is detachably connected, thus solving the problem of replacing the sealing ring 5.

[0041] like Figures 3 to 7 As shown, the cover body 3 includes a cover edge 31; the pot ring 4 includes a U-shaped upper ring 44 and a U-shaped lower ring 48; the U-shaped upper ring 44 is fixedly sleeved on the cover edge 31; the sealing ring 5 also includes an outer ring 53, which is disposed between the upper lip 51 and the lower lip 52, and is movably sleeved inside the U-shaped lower ring 48.

[0042] This embodiment details the connection method of the three components in the above embodiment. The edge of the cover 3 is the cover edge 31. The pot ring component 4 is a metal ring with a complex cross-section. Its upper part forms an upward-opening U-shaped upper ring 44, and its lower part forms a horizontally open U-shaped lower ring 48. The pot ring component 4 simultaneously achieves the two functions of fixing the cover edge 31 of the cover 3 and accommodating the outer ring 53 of the sealing ring 5. Specifically: like Figure 7As shown, the U-shaped upper ring 44 is used to hold the cover edge 31. During assembly, the cover edge 31 is placed into the groove of the U-shaped upper ring 44, and then the opening of the U-shaped upper ring 44 is rolled and pressed inward by rolling, curling, etc., so as to firmly wrap the cover edge 31 inside and achieve a fixed connection.

[0043] like Figure 7 As shown, the U-shaped lower ring 48 is designed as a groove or pocket. The outer ring 53 of the sealing ring 5 is located between the upper lip 51 and the lower lip 52, and the shape and size of the outer ring 53 can be embedded in the U-shaped lower ring 48. The U-shaped upper ring 44 is integrally fixed on the lid edge 31, while the U-shaped lower ring 48 provides a detachable installation for the outer ring 53 of the sealing ring 5, which facilitates the subsequent maintenance and replacement of the sealing ring 5. At the same time, the upper lip 51 and lower lip 52 of the sealing ring 5 are used to ensure the sealing performance between the lid 2 and the pot body 1.

[0044] like Figure 6 and Figure 7 As shown, the pot ring component 4 includes an integrally connected outer ring wall 41 and inner ring 45. The outer ring wall 41 includes an outer upper edge 42; the inner ring 45 includes an inner upper edge 46 and an inner lower edge 47, which together form a U-shaped lower ring 48; the outer upper edge 42 and the inner upper edge 46 together form a U-shaped upper ring 44.

[0045] The pot ring component 4 is formed by bending or rolling a single metal sheet, achieving a complex double U-shaped groove structure with a single element. The metal sheet is bent into a roughly vertical outer ring wall 41. The top of the outer ring wall 41 is folded inward to form the outer upper edge 42.

[0046] like Figure 7 As shown, the inner ring 45 is fixed to the inner side wall of the outer ring wall 41, and after multiple folds on the inner side, the inner ring 45 is folded into at least two horizontal or inclined parts, so that the inner ring 45 forms an upper inner side 46 located above and an inner lower side 47 located below.

[0047] The U-shaped upper ring 44 is formed by the outer upper edge 42 of the outer ring wall 41 and the inner upper edge 46 of the inner ring 45, and the cover edge 31 is fixed in the U-shaped upper ring 44.

[0048] The U-shaped lower ring 48 is formed by the inner upper edge 46 and inner lower edge 47 of the inner ring 45 and a short vertical wall connecting the two. The outer ring 53 of the sealing ring 5 is movably fitted in the U-shaped lower ring 48. Through the folded geometry, the pot ring 4 can simultaneously undertake the functions of fixing the lid 3 and accommodating the sealing ring 5. The structure has a high degree of integration, and at the same time, it makes full use of the synergistic relationship between the components, saves costs as much as possible, and improves the sealing performance.

[0049] like Figure 2As shown, the pot ring 4 also includes an outer lower edge 43; the sealing ring 5 also includes a lower ring 54 disposed below the lower lip 52; the lower ring 54 contacts and seals with the inner edge 13 of the pot body 1; a lower air jet channel is formed between the outer lower edge 43 and the outer edge 12 of the pot body 1.

[0050] In this embodiment, based on the above embodiment, the outer ring wall 41 of the pot ring component 4 forms an outer lower edge 43 at its lowest end. The sealing ring 5 has the aforementioned lower ring 54, which provides safe guidance for steam depressurization and assists in positioning. Specifically: The lower ring 54 contacts the inner wall of the pot body 1, serving to guide and assist in sealing the lid 2. The outer lower edge 43 of the pot ring 4 is designed to hang or tilt on the outside of the pot body 1, maintaining a certain gap between the outer lower edge 43 and the outer wall of the pot body 1. This gap constitutes the lower air jet channel. When abnormal pressure inside the pot causes the lower lip 52 to fail, such as when the exhaust valve is blocked, high-pressure steam will rush out from the upper edge 11 of the pot. At this time, the lower air jet channel acts as a steam guide, preventing horizontal steam jet and forcing steam to exit downwards from the lower air jet channel, thereby avoiding horizontal or upward steam jet and preventing users from being scalded during use.

[0051] like Figure 1 and Figure 2 As shown, a pressure cooker includes a pot body 1 and the aforementioned pot lid 2, the pot lid 2 being detachably placed over the opening of the pot body 1.

[0052] This embodiment discloses a complete pressure cooker product, which includes a pot body 1 for holding food and water and a pot lid 2 with a detachable sealing ring 5 as described above. Specifically: The lid 2 is detachably placed on the opening of the pot body 1. In this embodiment, there is no mechanical locking structure, such as a snap or thread, between the lid 2 and the pot body 1. Instead, the seal is achieved by the weight of the lid 2 and the positive or negative pressure formed subsequently. Thus, this embodiment provides a pressure cooker with a simple structure, convenient operation, and easy maintenance and replacement of the sealing ring 5.

[0053] In another embodiment, this application can also be applied to pressure cookers requiring mechanical locking. The pot body 1 has inward or outward locking teeth at its opening, and the outer periphery of the pot ring 4 of the lid 2 also has corresponding locking teeth. After the user closes the lid 2, they need to rotate the lid 2 or the pot ring 4 to achieve mechanical locking. In the locked pressure cooker, the lower lip 52 of the separable sealing ring 5 is forcefully pressed together by the pot ring 4 and the opening of the pot body 1, forming a high-pressure seal. This embodiment retains the advantage of the removable sealing ring 5, making the pressure cooker equipped with the sealing ring 5 easy to clean and replace.

[0054] like Figure 1 and Figure 2As shown, the pot body 1 has an upper edge 11, an outer edge 12, and an inner edge 13. The upper edge 11 is the open end face of the pot body 1. The inner edge 13 and the outer edge 12 are respectively located on the inner and outer sides of the upper edge 11. The lower lip 52 of the sealing ring 5 abuts and seals against the upper edge 11. The lower outer edge 43 of the pot ring 4 forms a lower air jet channel between it and the outer edge 12. The lower ring 54 of the sealing ring 5 abuts and seals against the inner edge 13. And / or, the pressure cooker is a vacuum micro-pressure cooker. When a negative pressure is formed inside the pot body 1, the upper lip 51 abuts and seals against the lid 3.

[0055] This embodiment preferably uses a vacuum pressure cooker, and describes the working principle and sealing interface of the vacuum pressure cooker. The opening edge of the pot body 1 has an upper edge 11, an outer edge 12, and an inner edge 13. The upper edge 11 is a flat sealing surface at the top of the pot body 1, mainly used to fit the lower lip 52 of the sealing ring 5. The outer edge 12 serves as the outer wall of the pot body 1, and the inner edge 13 serves as the inner wall of the pot body 1, that is, the side wall for containing food.

[0056] The sealing ring 5 and the pot ring 4 work together. During cooking, the outer side 522 of the lower lip abuts against the upper edge 11 of the pot as the main sealing surface for slight positive pressure and negative pressure during cooling; the lower ring 54 abuts against the inner edge 13 of the pot to achieve the positioning of the pot lid 2 and the anti-splashing effect of soup; the outer lower edge 43 of the pot ring 4 forms a gap with the outer edge 12 of the pot to form a lower air jet channel to achieve safe pressure relief.

[0057] This embodiment specifically relates to a vacuum negative pressure function. Utilizing the sealing structure of the upper lip 51 and lower lip 52 of this application, a vacuum seal is achieved between the lid 2 and the pot body 1. When the cookware cools after cooking, the condensation of steam inside the pot body 1 causes the internal pressure to be lower than the external atmospheric pressure, creating a negative pressure. At this time, the external atmospheric pressure exerts two forces: first, it presses the entire lid 2 downwards, making the lower lip 52 press more tightly against the upper edge 11 of the pot; second, the external air compresses the upper lip 51 from above, making it press more tightly against the lid edge 31. Therefore, the higher the vacuum level inside the pot, the tighter the upper lip 51 and lower lip 52 are pressed, and the more reliable the seal. This demonstrates that the design of the upper lip 51 and lower lip 52 of the separable sealing ring 5 is equally efficient and safe for achieving both positive and negative pressure vacuum micro-pressure functions.

[0058] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A separable sealing ring, characterized in that, The sealing ring is used in the lid of the pressure cooker and includes: An outer ring, which is movably mounted on the pot ring of the pressure cooker; An upper lip, extending from the upper part of the outer ring, is used to contact and seal with the lid body of the pot lid; and A lower lip extends from the lower part of the outer ring and is used to seal against the pressure cooker body.

2. The separable sealing ring as described in claim 1, characterized in that, The sealing ring also includes a lower ring that extends from the lower end of the lower lip and is used to contact and seal the inner edge of the pot body.

3. The separable sealing ring as described in claim 1, characterized in that, The upper lip has an outer surface on the side wall away from the outer ring, and the lower lip has an outer surface on the side wall away from the outer ring; both the outer surface of the upper lip and the outer surface of the lower lip are smooth surfaces, and are used to contact and seal the lid and the pot body, respectively.

4. The separable sealing ring as described in claim 1, characterized in that, The upper lip has an inner surface on one side wall facing the outer ring, and the lower lip has an inner surface on one side wall facing the outer ring. The outer ring has a top surface on the side wall facing the upper lip and a bottom surface on the side wall facing the lower lip. The inner surface of the upper lip, the inner surface of the lower lip, the top surface of the outer ring, and the bottom surface of the outer ring are all rough surfaces.

5. A pot lid, characterized in that, The lid is used in a pressure cooker and includes: a lid body, a pot ring, and a sealing ring; The pot ring is placed around the periphery of the lid and is fixedly connected to the lid; The sealing ring is movably sleeved on the pot ring component and is detachably connected to the pot ring component; The sealing ring includes: The upper lip abuts against the cover to seal it. The lower lip abuts against the body of the sealed pressure cooker.

6. The pot lid as described in claim 5, characterized in that, The lid includes a lid edge; the pot ring includes an upper U-shaped ring and a lower U-shaped ring; The U-shaped upper ring is fixedly sleeved on the edge of the cover; The sealing ring also includes an outer ring, which is disposed between the upper lip and the lower lip, and is movably fitted inside the U-shaped lower ring.

7. The pot lid as described in claim 6, characterized in that, The pot ring component includes an integrally connected outer ring wall and an inner ring, and the outer ring wall includes an outer upper edge; The inner ring includes an inner upper edge and an inner lower edge, which together form the U-shaped lower ring; The outer upper edge and the inner upper edge together form the U-shaped upper ring.

8. The pot lid as described in any one of claims 5 to 7, characterized in that, The pot ring component also includes an outer lower edge; the sealing ring also includes a lower ring disposed below the lower lip; The lower ring is in contact with and sealed to the inner edge of the pot body; A lower air jet channel is formed between the lower outer edge and the outer edge of the pot body.

9. A pressure cooker, characterized in that, include: Pot body; as well as The pot lid as described in claim 8, wherein the pot lid is detachably placed over the opening of the pot body.

10. The pressure cooker as described in claim 9, characterized in that, The pot body has an upper edge, an outer edge, and an inner edge. The upper edge is the open end face of the pot body, and the inner edge and the outer edge are respectively located on the inner and outer sides of the upper edge. The lower lip of the sealing ring abuts and seals against the upper side of the pot; A lower air jet channel is formed between the lower outer edge of the pot ring and the outer edge of the pot; The lower ring of the sealing ring abuts and seals against the inner edge of the pot; And / or, the pressure cooker is a vacuum micro-pressure cooker, in which the upper lip abuts and seals against the lid when a negative pressure is formed inside the cooker.

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