A sealing gasket for a pressure cooker

Abstract

This utility model discloses a pressure cooker sealing gasket, relating to the field of kitchen cooking utensil technology. It includes a pressure cooker lid and a sealing gasket body. The outer wall of the sealing gasket body has an installation groove that engages with the pressure cooker lid. The inner walls of the installation groove have anti-detachment structures on both sides to prevent detachment. This utility model, through the interference fit and engagement between the anti-detachment ribs on the outer wall of the sealing gasket body and the pressure cooker lid, along with the cooperation of the sealing lip, forms a dynamic sealing structure. The higher the pressure inside the pot, the greater the pressure of the medium acting on the inner side of the lip, causing it to expand outward and press more tightly against the inner wall of the lid, forming a self-tightening seal. This not only reduces the absolute dependence on the elasticity of the material but also maintains good sealing performance even after slight aging of the material, significantly improving sealing reliability and service life. It greatly increases installation firmness and effectively prevents the sealing gasket from accidentally detaching during pressure fluctuations or improper operation, eliminating safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of kitchen cooking utensils technology, specifically a pressure cooker sealing gasket. Background Technology

[0002] Pressure cookers achieve efficient cooking by increasing the pressure inside the pot, thus raising the boiling point of water. Their core sealing component is a sealing gasket (ring) installed at the joint between the lid and the pot body, typically made of elastic materials such as silicone or rubber. Currently, most pressure cooker sealing gaskets are made of elastic materials such as silicone or rubber, with a simple circular or rectangular cross-section. They fill the gap between the lid and the pot body through their elastic deformation, preventing high-pressure steam from escaping. This basic sealing gasket structure is fundamental to the function of a pressure cooker, and the technology is widely adopted.

[0003] The applicant discovered that the sealing performance of existing gaskets is closely related to their material lifespan. After prolonged exposure to high temperatures, high pressures, and frequent compression cycles, organic elastic materials inevitably experience aging, hardening, permanent deformation, and elastic fatigue, leading to a decrease in resilience and an inability to effectively fill gaps, thus causing sealing failure and steam leakage. Therefore, we propose a pressure cooker sealing gasket. Utility Model Content

[0004] The purpose of this invention is to provide a pressure cooker sealing gasket that can solve the problem mentioned in the background art of the decreased sealing reliability of traditional sealing gaskets due to material aging.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure cooker sealing gasket, comprising a pressure cooker lid and a sealing gasket body, wherein the outer side wall of the sealing gasket body is provided with an installation groove that engages with the pressure cooker lid, and the inner side wall of the installation groove is provided with anti-detachment structures on both sides for preventing detachment, and the inner side wall of the sealing gasket body extends towards the center to form a sealing lip for enhancing the seal, wherein the sealing gasket body, the sealing lip, and the anti-detachment structures are integrally formed.

[0006] By adopting the above technical solution, the sealing performance of the sealing gasket body during use can be improved.

[0007] Preferably, the anti-detachment structure is an annular anti-detachment rib that surrounds the inner wall of the mounting groove, and the anti-detachment rib is press-fitted with the inner wall of the pressure cooker lid.

[0008] By adopting the above technical solution, the stability of the sealing gasket body after installation can be improved.

[0009] Preferably, the cross-section of the sealing lip is semi-circular.

[0010] By adopting the above technical solution, it is convenient to transmit the steam pressure inside the pressure cooker.

[0011] Preferably, there are four sealing lips, which are equidistantly distributed.

[0012] By adopting the above technical solution, the steam pressure inside the pressure cooker can be transmitted to the outside of the sealing gasket body.

[0013] Preferably, the top of the sealing gasket body extends towards the center to form two indicator ears, and the top of the indicator ears is provided with a warning strip made of a temperature-resistant color-changing material, the warning strip being embedded and fixed inside the indicator ears.

[0014] By adopting the above technical solution, the temperature inside the pressure cooker lid can be displayed.

[0015] Preferably, the pressure cooker lid has an observation window at the top corresponding to the indicator ear, and the observation window is made of heat-resistant glass.

[0016] By adopting the above technical solution, it is easy to observe the color change of the warning strip.

[0017] Compared with the prior art, the beneficial effects of this utility model are: Firstly, by incorporating a sealing gasket body, anti-detachment ribs, and a sealing lip, the anti-detachment ribs on the outer wall of the sealing gasket body, along with the interference fit and interlocking with the pressure cooker lid, and the cooperation of the sealing lip, form a dynamic sealing structure. The higher the pressure inside the pot, the greater the pressure of the medium acting on the inner side of the lip, causing it to expand outward and press more tightly against the inner wall of the pot lid, creating a self-tightening sealing effect. This not only reduces the absolute dependence on the elasticity of the material but also maintains good sealing performance even after the material has aged slightly, significantly improving sealing reliability and service life. It also greatly increases the installation firmness and effectively prevents the sealing gasket from accidentally detaching during pressure fluctuations or improper operation, eliminating safety hazards.

[0018] Secondly, by setting up indicator ears, warning strips, and observation windows, the observation window, in conjunction with the warning strips on the indicator ears, allows for real-time and intuitive judgment of whether the pot is still under high temperature and pressure before opening the lid, based on the color changes of the warning strips. This not only provides crucial safety warnings but also greatly enhances product safety and user experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall bottom view of the present invention; Figure 3 This is a cross-sectional view of the sealing gasket body of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Pressure cooker lid; 2. Sealing gasket body; 201. Mounting groove; 202. Anti-detachment rib; 203. Sealing lip; 3. Indicator ear; 301. Warning strip; 4. Observation window. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0025] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0026] Please see Figures 1-4The figure shows a pressure cooker sealing gasket, including a pressure cooker lid 1 and a sealing gasket body 2. The sealing gasket body 2 is made of food-grade silicone. The outer wall of the sealing gasket body 2 has an installation groove 201 that engages with the pressure cooker lid 1. The inner wall of the installation groove 201 has anti-detachment structures on both sides to prevent it from coming off. The anti-detachment structure is an annular anti-detachment rib 202 that surrounds the inner wall of the installation groove 201. The anti-detachment rib 202 is press-fitted with the inner wall of the pressure cooker lid 1. The inner wall of the sealing gasket body 2 extends towards the center to form a sealing lip 203 to enhance the seal. The cross-section of the sealing lip 203 is semi-circular. The semi-circular structure is conducive to stress dispersion and elastic deformation. There are four sealing lips 203, which are equidistantly distributed. The sealing gasket body 2, the sealing lip 203 and the anti-detachment structure are integrally formed. When the device is in use, the sealing gasket body 2 is first embedded inside the pressure cooker lid 1. When the pressure cooker lid 1 is fastened to the pressure cooker, the pressure cooker lid 1 is compressed, and the anti-detachment rib 202 tightly engages with the inner side of the pressure cooker lid 1, forming a preliminary seal. When the pressure inside the pressure cooker increases, the steam pressure acts on the sealing lip 203, forcing the indicator ear 3 to further adhere to the inner wall of the pressure cooker lid 1, forming a strong self-tightening secondary seal. Furthermore, through the interference fit and engagement between the anti-detachment rib 202 on the outer wall of the sealing gasket body 2 and the pressure cooker lid 1, and with the cooperation of the sealing lip 203, a dynamic sealing structure is formed. The higher the pressure inside the pot, the more the medium pressure acts on the inner side of the lip, causing it to expand outward and press more tightly against the inner wall of the lid, forming a self-tightening sealing effect. This not only reduces the absolute dependence on the elasticity of the material, but also maintains good sealing performance even after the material has aged slightly, significantly improving sealing reliability and service life, greatly increasing installation firmness, and effectively preventing the sealing gasket from accidentally detaching during pressure fluctuations or improper operation, thus eliminating safety hazards.

[0027] Please see Figure 1 , Figure 3 and Figure 4 In the figure, the top of the sealing gasket body 2 extends towards the center to form two indicator ears 3. The top of the indicator ears 3 is provided with a warning strip 301 made of a heat-resistant color-changing material. The heat-resistant color-changing material is thermosensitive color-changing ink or thermosensitive color-changing plastic. When the temperature inside the pot is above 80°C, the warning strip 301 turns red and when it is below 40°C, the warning strip 301 turns green. The warning strip 301 is embedded and fixed inside the indicator ears 3. The top of the pressure cooker lid 1 is provided with an observation window 4 at the position corresponding to the indicator ears 3. The observation window 4 is made of heat-resistant glass. After cooking is complete and the pressure inside the pot is released, the user can check the color of the warning strip 301 on the indicator ear 3 through the observation window 4 to determine the safety. If it is red, it means the temperature is still high and the lid should not be opened; if it turns green, it means it is safe to open the lid. Throughout the process, the anti-detachment rib 202 provides additional mechanical locking force to prevent the sealing gasket from coming off. In addition, through the cooperation of the observation window 4 and the warning strip 301 on the indicator ear 3, the user can intuitively judge whether the pot is still in a high temperature and high pressure state before opening the lid based on the color change of the warning strip 301. This not only provides a crucial safety warning but also greatly improves the safety of the product and the user experience.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0029] Furthermore, the structures not described in this utility model do not involve the design points and improvement directions of this utility model and all adopt existing technology. The above content falls within the scope of the inventor's technical knowledge. Since the technical content in this field is vast and complex, the above content of this application does not necessarily constitute prior art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure cooker sealing gasket, characterized in that: The pressure cooker includes a pressure cooker lid (1) and a sealing gasket body (2). The outer side wall of the sealing gasket body (2) is provided with an installation groove (201) that engages with the pressure cooker lid (1). The inner sides of the installation groove (201) are provided with anti-detachment structures to prevent detachment. The inner side wall of the sealing gasket body (2) extends towards the center to form a sealing lip (203) to enhance the seal. The sealing gasket body (2), the sealing lip (203) and the anti-detachment structure are integrally formed.

2. The pressure cooker sealing gasket according to claim 1, characterized in that: The anti-detachment structure is an annular anti-detachment rib (202) surrounding the inner wall of the mounting groove (201), and the anti-detachment rib (202) is interference-fitted with the inner wall of the pressure cooker lid (1).

3. The pressure cooker sealing gasket according to claim 1, characterized in that: The cross-section of the sealing lip (203) is semi-circular.

4. A pressure cooker sealing gasket according to claim 1, characterized in that: The sealing lip (203) is provided in four parts, and the four sealing lips (203) are distributed at equal intervals.

5. A pressure cooker sealing gasket according to claim 1, characterized in that: The top of the sealing gasket body (2) extends towards the center to form two indicator ears (3). The top of the indicator ears (3) is provided with a warning strip (301) made of heat-resistant color-changing material. The warning strip (301) is embedded and fixed inside the indicator ears (3).

6. A pressure cooker sealing gasket according to claim 5, characterized in that: The pressure cooker lid (1) has an observation window (4) at the top corresponding to the indicator ear (3), and the observation window (4) is made of heat-resistant glass.

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