Pressure limiting valve and cooking container

Abstract

The utility model relates to the technical field of cooking devices, in particular to a pressure limiting valve and a cooking container. The utility model provides a pressure limiting valve and a cooking container. The cooking container comprises a container body, a container cover and the pressure limiting valve. The pressure limiting valve comprises a base, a valve body and a driving part, the base is provided with a cavity and an exhaust structure, the valve body is arranged in the cavity, the driving part is provided with a guide face, when the driving part moves, the valve body is driven to ascend or descend along the guide face, the exhaust structure is opened when the valve body ascends, and the exhaust structure is closed when the valve body descends. The pressure-limiting valve is controlled to exhaust through the driving piece, so that a user is prevented from being scalded by directly touching the pressure-limiting valve with a hand, and the use safety is improved.

Description

Technical Field

[0001] This application relates to the field of kitchen utensil technology, and in particular to a pressure relief valve and a cooking container. Background Technology

[0002] When using a pressure cooker, users need to remove the valve body of the plug-in pressure relief valve to release the pressure inside the pot. Since high-temperature steam will be released when releasing the pressure, removing the valve body can easily cause burns to users, posing a safety hazard. Utility Model Content

[0003] This application provides a pressure relief valve and a cooking container to improve the safety of the pressure relief valve.

[0004] This application provides a pressure relief valve, the pressure relief valve comprising:

[0005] A base having a cavity and an exhaust structure;

[0006] Valve body, at least a portion of which is located in the cavity;

[0007] A driving component, which can drive the valve body to move, is used to control the opening and closing of the exhaust structure;

[0008] The driving component includes a first main body and a second main body connected to each other. The first main body is located outside the cavity, and the second main body is located inside the cavity. At least one of the valve body and the second main body is provided with a guide surface. The valve body and the second main body abut against each other through the guide surface and are capable of relative movement along the guide surface. When the first main body moves in a first direction, the valve body can move along the guide surface in a direction away from the base to open the exhaust structure; when the first main body moves in a second direction, the valve body can move along the guide surface in a direction closer to the base to close the exhaust structure.

[0009] In this design, by moving the first main body located outside the base, the second main body moves in the same direction. Through the design of a guide surface, the movement of the second main body allows the valve body to move, thus opening or closing the exhaust structure. Since the first main body is located outside the base, the user does not need to directly contact the valve body during use, reducing the possibility of burns. Furthermore, the valve body does not need to be removed from the pressure relief valve during use, thus retaining a certain degree of obstruction and reducing the possibility of liquid from the cooking container spraying out and scalding the user, thereby improving the safety of the pressure relief valve.

[0010] In one possible design, the guide surface is disposed on the drive member, the guide surface is an inclined surface, and the angle α between the guide surface and the height direction of the pressure relief valve satisfies °45≤α≤60°.

[0011] In this design, when the guide surface is inclined, the drive component contacts the valve body through the guide surface. The force provided by the drive component to the valve body can be decomposed along the guide surface into an axial force along the height of the valve body and a radial force along the diameter of the valve body. When α < 45°, the inclination angle of the guide surface is too large, resulting in an overly steep guide surface. That is, when the drive component moves a small displacement, the displacement distance of the guide surface is too large, which can easily lead to accidental contact and cause the pressure relief valve to open incorrectly. When α > 60°, the inclination angle of the guide surface is too small, resulting in an overly gentle guide surface. During actuation, the drive component needs to move a large displacement distance to raise the valve body, making operation inconvenient and increasing the overall size of the pressure relief valve. When 45° ≤ α ≤ 60°, the lifting speed of the drive component is appropriate, facilitating user operation.

[0012] In one possible design, the second main body is an arc-shaped structure, and at least a portion of the second main body is arranged along the circumference of the valve body.

[0013] In this design, the second main body part arranged circumferentially can increase the contact area between the valve body and the guide surface, that is, increase the force-bearing area of ​​the valve body, which facilitates the movement of the valve body and can provide a more balanced circumferential stress to the valve body, thereby improving the stability of the valve body movement.

[0014] In one possible design, the central angle corresponding to the arc-shaped structure of the second main body is β, where 60°≤β≤120°.

[0015] In this design, when β < 60°, the central angle of the arc structure is too small, resulting in a small contact area between the valve body and the guide surface, making it difficult to drive the valve body and increasing operational difficulty. When β > 120°, the contact area between the valve body and the arc structure is too large, leading to an excessively large volume of the second main body, which increases its weight and makes the drive component prone to tilting, affecting normal use. In this design, 60° ≤ β ≤ 120° provides a suitable contact area between the valve body and the arc structure, facilitating control of the valve body's lifting speed and reducing power loss caused by friction, thus improving efficiency.

[0016] In one possible design, the base further includes a first body portion and a second body portion, one of the first body portion and the second body portion being provided with at least one snap-fit ​​portion, and the other being provided with at least one mating portion, wherein the snap-fit ​​portion snaps into the mating portion.

[0017] Along the height direction of the pressure relief valve, at least a portion of the drive member is located between the first body portion and the second body portion.

[0018] In this design, the snap-fit ​​and mating parts enable the snap-fit ​​connection between the first and second body parts. This snap-fit ​​connection ensures a stable and reliable connection between the first and second body parts, and allows for detachable connection for easy cleaning and convenient replacement and maintenance in case of damage. Furthermore, the detachable connection between the first and second body parts facilitates the installation and replacement of the drive component held between them. The strong stability of the snap-fit ​​connection also prevents the drive component from easily falling off or shifting, thus improving its reliability during use.

[0019] In one possible design, the first body portion has a recess on the side facing the valve body, the recess being recessed away from the valve body, and the first body portion is able to extend into the recess.

[0020] In this design, the surface of the recessed portion abuts against the surface of the first body portion, and the first body portion extending into the recessed portion can limit the displacement of the driving component along the height direction of the base, thereby improving the stability of the connection between the driving component and the base.

[0021] In one possible design, the diameter of the cavity is larger than the diameter of the valve body, and there is a gap between the valve body and the cavity, the gap width d satisfying 10mm≤d≤12mm.

[0022] In this design, when d < 10mm, the narrow gap restricts gas flow, resulting in poor exhaust performance. Furthermore, the small gap is easily clogged by impurities in the gas, such as food residue, causing exhaust channel failure and excessive pressure inside the pot, posing a safety hazard. When d > 12mm, the excessively wide gap causes excessive swaying of the valve body within the cavity, reducing valve stability, making it prone to impacts and wear, and shortening its service life. In this design, a gap of 10mm ≤ d ≤ 12mm ensures a moderate exhaust flow, good airflow guidance, reduced valve body sway, decreased wear, smooth pressure relief, and sufficient width to prevent food residue blockage, thus improving reliability.

[0023] In one possible design, the base has a cavity, at least a portion of the valve body is located in the cavity, the bottom wall of the cavity is provided with an exhaust hole, the exhaust structure is disposed at the exhaust hole, and the cross-sectional area of ​​the cavity gradually increases in the direction away from the bottom wall.

[0024] In this design, the cavity surface with gradually increasing cross-sectional area forms an inclined plane, which guides the airflow. When the airflow flows along the inclined plane, the gradually increasing cross-section can guide the airflow, causing it to move away from the bottom wall of the cavity, thus making the airflow move upward and reducing airflow accumulation.

[0025] In one possible design, the pressure relief valve includes an elastic element sleeved on the outside of the exhaust structure, and the valve body sleeved on the outside of the elastic element, the elastic element being used to prevent the valve body from detaching from the exhaust structure.

[0026] In this design, when the valve body is raised a certain distance, the elastic element will lock onto the exhaust structure, preventing the valve body from moving further upward and restricting the valve body from detaching from the exhaust structure. When the valve body descends, the elastic element will provide support for the valve body.

[0027] In one possible design, the cooking container includes: a container body; and a container lid that fits onto the container body, the container lid being equipped with a pressure relief valve. The pressure relief valve serves to release pressure from the cooking container.

[0028] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0029] Figure 1 This is a partial cross-sectional view of the cooking container provided in an embodiment of this application in one specific embodiment;

[0030] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0031] Figure 3 This is a top view of the pressure relief valve when the exhaust structure provided in the embodiment of this application is open;

[0032] Figure 4 for Figure 3 Front sectional view of the intermediate pressure relief valve;

[0033] Figure 5 This is a top view of the pressure relief valve when the exhaust structure is closed, as provided in the embodiments of this application.

[0034] Figure 6 for Figure 5 Front sectional view of the pressure relief valve.

[0035] Figure 7 for Figure 2 Schematic diagram of the drive component;

[0036] Figure 8 for Figure 7 Front view of the drive component;

[0037] Figure 9 for Figure 1 A schematic diagram of the structure of the container lid.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1-Container body;

[0040] 2- Container lid;

[0041] 3-Pressure relief valve;

[0042] 31-Base;

[0043] 311-Cavity;

[0044] 312 - Exhaust structure;

[0045] 312a - Protrusion;

[0046] 313-First body part;

[0047] 313a - Fitting part;

[0048] 314 - Second Body Section;

[0049] 314a - Connector;

[0050] 315 - Exhaust port;

[0051] 32-Valve body;

[0052] 321 - Card slot;

[0053] 33-Driver components;

[0054] 331-First Main Body Section;

[0055] 331a - Recessed portion;

[0056] 332 - Second Main Body;

[0057] 332a - Guide surface;

[0058] 34 - Elastic element;

[0059] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0060] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0061] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0062] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0063] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0064] This application provides a cooking container, which can be any cooking container with a pressure relief valve. The following description uses a pressure cooker as a specific example of the cooking container.

[0065] like Figure 1 As shown, when the cooking container is a pressure cooker, it includes a container body 1, a container lid 2, and a pressure relief valve 3. The container lid 2 can be closed onto the container body 1 to keep the food warm and maintain the pressure inside the cooking container. The pressure relief valve 3 is located on the container lid 2. Normally, the pressure relief valve is in the closed state. When it is necessary to reduce the pressure inside the cooking container, the pressure relief valve can be opened to connect the inside of the cooking container with the outside, allowing the steam inside the cooking container to escape, thereby reducing the pressure inside the cooking container.

[0066] like Figure 2 As shown, the pressure relief valve 3 includes a base 31, a valve body 32, and a drive member 33. The base 31 has a cavity 311 and an exhaust structure 312. The valve body 32 is installed inside the cavity 311. The drive member 33 is used to drive the valve body 32 to move, including but not limited to driving the valve body 32 to rise and fall. The rise and fall of the valve body 32 causes the exhaust structure 312 to open and close, venting the gas in the pot and reducing the pressure in the pot.

[0067] Specifically, such as Figure 3 , Figure 4 As shown, the drive member 33 includes a first main body 331 and a second main body 332 connected to each other. When the drive member 33 is assembled with the base 31, the first main body 331 is located outside the cavity 311, and the second main body 332 is located inside the cavity 311. At least one of the valve body 32 and the second main body 332 is provided with a guide surface 332a. The valve body 32 and the second main body 332 abut against each other through the guide surface 332a and can move relative to each other along the guide surface 332a.

[0068] When the pressure relief valve 3 is in the closed state, the position of the drive component 33 is as follows: Figure 5As shown, at this time, the state of pressure relief valve 3 is as follows: Figure 6 As shown. When pressure relief valve 3 is in Figure 6 In the indicated state, the valve body 32 blocks the exhaust structure 312. When it is necessary to open the pressure relief valve 3, the first main body 331 is driven to move along the first direction, and the driving member 33 can move from... Figure 5 Move to the position shown Figure 7 At the position shown, the valve body 32 can move along the guide surface 332a in a direction away from the base 31, and the pressure relief valve 3 can be released from... Figure 6 Move to the position shown Figure 8 The position shown allows the exhaust structure 312 to open, enabling the gas inside the pot to be freely discharged along the exhaust structure 312. When the first main body 331 moves in the second direction, the valve body 32 can move along the guide surface 332a towards the base 31, and the pressure relief valve 3 can be released from the pressure relief valve. Figure 8 Move to the position shown Figure 6 At the position shown, the exhaust structure 312 is blocked by the valve body 32.

[0069] In this design, by moving the first main body 331 located outside the base 31, the second main body 332 moves in the same direction. Through the design of the guide surface 332a, the movement of the second main body 332 allows the valve body 32 to move, thereby opening or closing the exhaust structure 312. Since the first main body 331 is located outside the base 31, the user does not need to directly contact the valve body 32 during use, thus reducing the possibility of burns. Furthermore, the valve body 32 does not need to be removed from the pressure relief valve 3 during use, thus maintaining a certain blocking effect and reducing the possibility of liquid spraying out of the cooking container and scalding the user, thereby improving the safety of the pressure relief valve 3.

[0070] In one specific embodiment, such as Figure 3 , Figure 4 As shown, the guide surface 332a is disposed on the surface of the second main body 332 of the driving member 33. The guide surface 332a is an inclined surface, and there is an angle α between the guide surface 332a and the height direction of the pressure relief valve 3, where α satisfies 45°≤α≤60°. For example, α can be: 46°, 48°, 50°, 52°, 53°, 55°, 57°, or 58°.

[0071] In this design, when the guide surface 332a is inclined, the drive member 33 contacts the valve body 32 through the guide surface 332a. The force provided by the drive member 33 to the valve body 32 can be decomposed along the guide surface 332a into an axial force along the height direction of the valve body 32 and a radial force along the diameter direction of the valve body 32. When α is less than 45°, the inclination angle of the guide surface 332a is too large, resulting in an overly steep guide surface 332a. That is, when the drive member 33 moves a small displacement, the displacement distance of the guide surface 332a is too large, which can easily lead to accidental contact and cause the pressure relief valve 3 to open erroneously. When α is greater than 60°, the inclination angle of the guide surface 332a is too small, resulting in an overly gentle guide surface 332a. During driving, the drive member 33 needs to move a large displacement distance to raise the valve body 32, making operation inconvenient and increasing the overall volume of the pressure relief valve 3. When 45°≤α≤60°, the lifting speed of the drive member 33 is appropriate, making it easy for the user to operate.

[0072] In one specific embodiment, the second main body 332 has an arc-shaped structure, at least part of which is arranged along the circumference of the valve body 32. The circumferential arrangement of the second main body 332 can increase the contact area between the valve body 32 and the guide surface 332a, that is, increase the force-bearing area of ​​the valve body 32, which facilitates the movement of the valve body 32, and can provide a more balanced circumferential stress for the valve body 32, thereby improving the stability of the movement of the valve body 32.

[0073] In another specific embodiment, the arc-shaped structure can be concentric with the outer periphery of the valve body 32. Concentricity with the valve body 32 ensures a smooth change in the contact area, resulting in a smooth change in the driving force provided by the drive member 33 to the valve body 32, thus improving stability during use.

[0074] Specifically, such as Figure 3 As shown, the central angle corresponding to the arc structure of the second main body 332 is β, 60°≤β≤120°. For example, β can be: 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°.

[0075] In this design, when β < 60°, the central angle of the arc-shaped structure is too small, resulting in a small contact area between the valve body 32 and the guide surface 332a, making it difficult to drive the valve body 32 and increasing the difficulty of operation. When β > 120°, the contact area between the valve body 32 and the arc-shaped structure is too large, leading to an excessively large volume of the second main body 332, which increases its weight and makes the drive component 33 prone to tilting, affecting normal use. In this design, 60° ≤ β ≤ 120°, the contact area between the valve body 32 and the arc-shaped structure is moderate, facilitating control of the lifting speed of the valve body 32, reducing power loss caused by friction, and improving efficiency.

[0076] In one specific embodiment, such as Figure 6 , Figure 8As shown, the base 31 also includes a first body part 313 and a second body part 314. The first body part 313 is provided with at least one mating part 313a, and the second body part 314 is provided with at least one snap-fit ​​part 314a. When the first body part 313 and the second body part 314 are combined, the snap-fit ​​part 314a of the second body part 314 snaps into the mating part 313a of the first body part 313, thereby realizing the snap-fit ​​between the first body part 313 and the second body part 314.

[0077] The first body part 313 and the second body part 314 are connected by a snap-fit ​​mechanism, which ensures a stable and reliable connection. The first body part 313 and the second body part 314 are detachable, making them easy to clean and convenient to replace and repair when damaged.

[0078] In one specific embodiment, the mating part 313a is arranged circumferentially on the first body part 313, and the snap-fit ​​part 314a is arranged circumferentially on the second body part 314.

[0079] In this design, the snap-fit ​​portion 314a and the mating portion 313a arranged circumferentially improve the stability and reliability of the connection between the first body portion 313 and the second body portion 314.

[0080] Specifically, such as Figure 2 As shown, along the height direction of the pressure relief valve 3, at least a portion of the drive member 33 is located between the first body part 313 and the second body part 314, and is clamped by the first body part 313 and the second body part 314. Because the first body part 313 and the second body part 314 are detachably connected, the drive member 33 is easy to install and replace. Moreover, the first body part 313 and the second body part 314 have strong snap-fit ​​stability, making the drive member 33 less likely to fall off or shift, thus improving the reliability of the drive member 33 during use.

[0081] Specifically, such as Figure 2 As shown, the first main body 331 has a recessed portion 331a on the side facing the valve body 32. The recessed portion 331a is recessed in a direction away from the valve body 32. The first body portion 313 can extend into the recessed portion 331a. At this time, the surface of the recessed portion 331a abuts against the surface of the first body portion 313. The extension of the first body portion 313 into the recessed portion 331a can restrict the displacement of the drive member 33 along the height direction of the base 31, thereby improving the stability of the connection between the drive member 33 and the base 31.

[0082] In one specific embodiment, such as Figure 6 , Figure 8As shown, the diameter of cavity 311 is larger than the diameter of valve body 32, and there is a gap between valve body 32 and cavity 311. The width d of the gap satisfies 10mm ≤ d ≤ 12mm. For example, d can be: 10.2mm, 10.3mm, 10.5mm, 10.7mm, 11mm, 11.2mm, 11.3mm, 11.5mm, 11.7mm, or 11.8mm.

[0083] In this design, when d < 10mm, the narrow gap restricts gas flow, resulting in poor exhaust performance. Furthermore, the small gap is easily clogged by impurities in the gas, such as food residue, causing exhaust channel failure and excessive pressure inside the pot, posing a safety hazard. When d > 12mm, the excessively wide gap causes the valve body 32 to swing excessively within the cavity 311, reducing its stability and making it prone to wear and tear, thus shortening its service life. In this design, a gap of 10mm ≤ d ≤ 12mm ensures a moderate exhaust flow, good airflow guidance, reduced valve body 32 swing amplitude, decreased wear, smooth pressure relief, and sufficient width to prevent food residue blockage, thereby improving reliability.

[0084] In one specific embodiment, such as Figure 2 , Figure 6 , Figure 8 As shown, the base 31 has a cavity 311, at least a portion of the valve body 32 is located in the cavity 311, the bottom wall of the cavity 311 is provided with an exhaust hole 315, the exhaust structure 312 is provided in the exhaust hole 315, and the cross-sectional area of ​​the cavity 311 gradually increases in the direction away from the bottom wall.

[0085] In this design, the surface of the cavity 311 with a gradually increasing cross-sectional area forms an inclined plane, which guides the airflow. When the airflow flows along the inclined plane, the gradually increasing cross-section can guide the airflow, causing it to move away from the bottom wall of the cavity 311, thus making the airflow move upward and reducing airflow accumulation.

[0086] In one specific embodiment, such as Figure 6 , Figure 8 As shown, the pressure relief valve 3 also includes an elastic element 34, which is sleeved on the outside of the exhaust structure 312, and the valve body 32 is sleeved on the outside of the elastic element 34. The elastic element 34 is used to prevent the valve body 32 from disengaging from the exhaust structure 312.

[0087] Specifically, the pressure relief valve 3 also includes a groove 321, at least a portion of the elastic element 34 is located in the groove 321, and the exhaust structure also includes two spaced protrusions 312a, with the elastic element 34 located between the two protrusions 312a.

[0088] In this design, when the valve body 32 is raised a certain distance, the elastic element 34 will be stuck on the protrusion 312a above the exhaust structure 312, preventing the valve body 32 from moving upward and restricting the valve body 32 from detaching from the exhaust structure 312. When the valve body 32 is lowered, the protrusion 312a below will support the valve body 32.

[0089] In one specific embodiment, the elastic element 34 can be a retaining ring. Retaining rings have the advantages of compact structure, lightweight, and easy installation, and can also adapt to preload, making them suitable as the elastic element 34 for this application.

[0090] Based on the pressure limiting valve 3 provided in the above embodiments, this application also provides a cooking container. The cooking container may include a container lid 2 and a container body 1. The container lid 2 can cover the container body 1. The container lid 2 is provided with a pressure limiting valve 3. The pressure limiting valve 3 can be any of the pressure limiting valves involved in the above embodiments. Since the pressure limiting valve 3 has the above technical effects, the container lid 2 with the pressure limiting valve 3 also has the corresponding technical effects, which will not be elaborated here.

[0091] In summary, by adding a base 31 and a drive component 33 to the pressure relief valve 3, the user can control the valve body 32 to rise or fall without directly contacting it, thereby opening or closing the exhaust structure 312 and safely controlling the release of internal pressure in the pressure cooker.

[0092] The above are merely specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the scope of the claims.

Claims

1. A pressure-limiting valve, characterized by The pressure limiting valve (3) comprises: a base (31) having a cavity (311) and an exhaust structure (312); a valve body (32) at least part of which is located in the cavity (311); a driving member (33) capable of driving the valve body (32) to move for controlling opening and closing of the exhaust structure (312); wherein the driving member (33) comprises a first body part (331) and a second body part (332) connected with each other, the first body part (331) is located outside the cavity (311), the second body part (332) is located inside the cavity (311), at least one of the valve body (32) and the second body part (332) is provided with a guide surface (332a), the valve body (32) and the second body part (332) abut through the guide surface (332a) and can move relatively along the guide surface (332a); when the first body part (331) moves in a first direction, the valve body (32) can move in a direction away from the base (31) along the guide surface (332a) for opening the exhaust structure (312); when the first body part (331) moves in a second direction, the valve body (32) can move in a direction close to the base (31) along the guide surface (332a) for closing the exhaust structure (312).

2. The pressure-limiting valve according to claim 1, characterized in that The guide surface (332a) is provided on the driving member (33), the guide surface (332a) is an inclined surface, and the included angle α between the guide surface (332a) and the height direction of the pressure limiting valve (3) satisfies 45°≤α≤60°.

3. The pressure-limiting valve according to claim 1, characterized in that The second body part (332) is an arc-shaped structure, and at least part of the second body part (332) is arranged along the circumference of the valve body (32).

4. The pressure-limiting valve according to claim 3, characterized in that The central angle of the arc-shaped structure of the second body part (332) corresponds to β, and 60°≤β≤120°.

5. The pressure-limiting valve according to claim 1, characterized in that The base (31) further comprises a first body part (313) and a second body part (314), one of the first body part (313) and the second body part (314) is provided with at least one clamping part (314a), and the other is provided with at least one matching part (313a), the clamping part (314a) and the matching part (313a) are clamped; At least part of the driving member (33) is located between the first body part (313) and the second body part (314) in the height direction of the pressure limiting valve (3).

6. The pressure-limiting valve according to claim 5, characterized in that The first body part (331) has a recess (331a) on the side facing the valve body (32), the recess (331a) is recessed away from the valve body (32), and the first body part (313) can extend into the recess (331a).

7. Pressure-limiting valve according to any of claims 1 to 6, characterized in that The diameter of the cavity (311) is greater than the diameter of the valve body (32), and there is a gap between the valve body (32) and the cavity (311), and the gap width d satisfies 10mm≤d≤12mm.

8. Pressure-limiting valve according to any one of claims 1 to 6, characterized in that The base (31) has a cavity (311) in which at least part of the valve body (32) is located, a bottom wall of the cavity (311) is provided with an exhaust hole (315), the exhaust structure (312) is arranged at the exhaust hole (315), and the cross-sectional area of the cavity (311) gradually increases in a direction away from the bottom wall.

9. Pressure-limiting valve according to any of claims 1 to 6, characterized in that The pressure limiting valve (3) comprises an elastic member (34), the elastic member (34) is sleeved outside the exhaust structure (312), the valve body (32) is sleeved outside the elastic member (34), and the elastic member (34) is used for limiting the valve body (32) from being separated from the exhaust structure (312).

10. A cooking vessel characterized by, The cooking container comprises: a container body (1); a container cover (2) covering the container body (1); wherein the container cover (2) is provided with a pressure limiting valve (3), and the pressure limiting valve (3) is the pressure limiting valve (3) according to any one of claims 1 to 9.

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