Pressure limiting valve and cooking container

Abstract

The utility model provides a pressure limiting valve and a cooking container, the pressure limiting valve comprises a valve body, a sealing element and an exhaust pipe, the sealing element is installed in the valve body, at least part of the structure of the sealing element can elastically deform, and the sealing element is provided with a first containing cavity communicated with the outside; the exhaust pipe is provided with an air inlet and an air outlet which are oppositely arranged in the height direction of the pressure limiting valve. The exhaust pipe comprises a first end in the height direction of the pressure limiting valve, the air outlet is formed in the first end, the first end is located in the first containing cavity, the peripheral wall of the first end can be matched with the side wall of the first containing cavity in a sealed mode so that the air outlet and the outside can be plugged, a valve element plugging component does not need to be additionally arranged, and the overall structure of the pressure limiting valve is simplified. And the sealing piece is provided with the first containing cavity, so that compared with protruding plugging components such as a valve element, it can be guaranteed that the sealing piece is not prone to being damaged in the long-time using process, the service life of the sealing piece is prolonged, and therefore the service life of the pressure limiting valve is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of cooking containers, and particularly to a pressure limiting valve and a cooking container. Background Art

[0002] A pressure cooker is a cooking container often used in people's daily lives. When the pressure cooker is heated, steam is generated inside. The increasing steam causes the internal pressure of the pressure cooker to gradually increase, facilitating the rapid cooking of food. To ensure the safe use of the pressure cooker, a pressure limiting valve is usually provided on the container lid of the pressure cooker. When the internal pressure of the pressure cooker is too high, the steam discharged from the exhaust pipe in the pressure limiting valve can push up the valve core that seals the exhaust pipe, thereby discharging some steam to reduce the pressure. To ensure the sealing effect of the valve core on the exhaust pipe, the valve core is usually designed as a convex structure extending into the exhaust pipe. However, during long-term use, the valve core is prone to damage, affecting the normal use of the pressure limiting valve. Summary of the Utility Model

[0003] In view of this, the present application provides a pressure limiting valve and a cooking container to solve the technical problem that the pressure limiting valve in the prior art is prone to damage.

[0004] In a first aspect, an embodiment of the present application provides a pressure limiting valve, which includes: a valve body; a seal, the seal is installed in the valve body, and at least part of the structure of the seal can elastically deform; the seal is provided with a first accommodation cavity communicating with the outside; an exhaust pipe, the exhaust pipe has an air inlet and an air outlet oppositely arranged along the height direction of the pressure limiting valve; wherein, the exhaust pipe includes a first end along the height direction of the pressure limiting valve, the air outlet is arranged at the first end, the first end is located in the first accommodation cavity, and the outer peripheral wall of the first end can be in sealing cooperation with the side wall of the first accommodation cavity to block the air outlet from communicating with the outside.

[0005] In this embodiment, the pressure limiting valve opens or blocks the air outlet of the exhaust pipe by the first end of the exhaust pipe abutting against the first accommodation cavity of the seal, without additionally providing a valve core blocking component, simplifying the overall structure of the pressure limiting valve. And the seal is provided with a first accommodation cavity. Compared with a convex blocking component such as a valve core, it can ensure that the seal is not easily damaged during long-term use, extend the service life of the seal, and thus extend the service life of the pressure limiting valve. In addition, at least part of the structure of the seal can elastically deform, so that the area where the seal abuts against the exhaust pipe can elastically deform, further improving the sealing performance after the first end is connected to the seal. And it can avoid damage to the abutting area between the first end and the seal due to collision when the seal moves along the height direction of the pressure limiting valve towards the exhaust pipe to abut against the exhaust pipe, thereby reducing the impact on the sealing effect of the air outlet.

[0006] In a specific embodiment, along the direction from the air outlet to the air inlet, the cross-sectional area of the first accommodation cavity gradually increases.

[0007] In this embodiment, along the direction from the air outlet to the air inlet, the cross-sectional area of the first accommodation cavity gradually increases, so that the side wall of the first accommodation cavity is inclined relative to the height direction of the pressure limiting valve, and the cross-sectional area of the part of the first accommodation cavity that abuts against the outer peripheral wall of the first end is small, thereby improving the sealing reliability of the air outlet. At the same time, the first accommodation cavity with a gradually increasing cross-sectional area does not block the movement of the sealing member along the height direction of the pressure limiting valve corresponding to the first end, thereby facilitating the release of the seal of the first accommodation cavity on the air outlet and enabling the steam in the container body to be discharged.

[0008] In a specific embodiment, the sealing member includes a sealing portion and a first mounting portion. The first mounting portion is mounted on the valve body, the first accommodation cavity is arranged in the sealing portion, and the sealing portion can elastically deform.

[0009] In this embodiment, the sealing member has a first mounting portion mounted on the valve body, which can improve the connection reliability between the sealing member and the valve body and prevent the sealing member from separating from the valve body during use. At the same time, the sealing member has a sealing portion that can elastically deform. The first accommodation cavity is arranged in the sealing portion, and the side wall of the first accommodation cavity is used for sealing cooperation with the first end of the exhaust pipe, enabling the sealing portion to elastically deform, thereby improving the sealing effect after the connection between the first accommodation cavity and the first end, and preventing damage to the first accommodation cavity and the first end due to collision, and prolonging the service life of the pressure limiting valve.

[0010] In a specific embodiment, the valve body includes a first valve body and a second valve body. The first valve body is sleeved on the second valve body and is detachably connected, and the first mounting portion is mounted on the second valve body.

[0011] In this embodiment, the first valve body is sleeved on the second valve body, and the user can hold the first valve body to pick up or place the pressure limiting valve, improving the convenience of use. And the first valve body and the second valve body are detachably connected, facilitating the installation and replacement of the first valve body and the second valve body. At the same time, the first mounting portion is mounted on the second valve body, making the sealing member face the exhaust pipe, facilitating the abutment of the sealing member against the exhaust pipe, thereby enabling the sealing of the air outlet of the exhaust pipe.

[0012] In a specific embodiment, a first connection hole is provided on the top wall of the second valve body, and the sealing member is mounted on the second valve body through the first connection hole; both ends of the top wall of the second valve body along the height direction of the pressure limiting valve abut against the sealing portion and the first mounting portion respectively.

[0013] In this embodiment, the seal is installed on the second valve body through the first connection hole, which improves the connection reliability between the seal and the second valve body. Moreover, both ends of the top wall of the second valve body in the height direction of the pressure limiting valve are respectively abutted against the sealing portion and the first installation portion, so that the top wall of the second valve body is clamped by the first installation portion and the sealing portion of the seal, realizing the connection between the seal and the second valve body, further improving the connection reliability and stability between the seal and the second valve body, and at the same time being able to provide positioning for the installation of the seal.

[0014] In a specific embodiment, the cross-sectional area of the first end is larger than the cross-sectional area of the exhaust pipe.

[0015] In this embodiment, the first end of the exhaust pipe is used to abut against the first accommodation cavity to seal the air outlet, and the cross-sectional area of the first end is larger than the cross-sectional area of the exhaust pipe. Thus, when the first end abuts against the first accommodation cavity, the connection stability between the first end and the first accommodation cavity is improved, and further the occurrence of the phenomenon that the valve body inclines relative to the exhaust pipe is reduced.

[0016] In a specific embodiment, the pressure limiting valve further includes a limiting member, the limiting member is fixedly connected to the valve body, and the limiting member is used to limit the first end from detaching from the first accommodation cavity.

[0017] In this embodiment, when the pressure of the steam in the container body is greater than the self-weights of the valve body, the seal and other components installed on the valve body, the valve body and the seal move away from the exhaust pipe in the height direction of the pressure limiting valve under the drive of the steam in the container body. The limiting member fixedly connected to the valve body limits the maximum distance that the valve body and the seal move away from the exhaust pipe in the height direction of the pressure limiting valve, avoiding the valve body and the seal from falling off, improving the use safety of the pressure limiting valve, and being able to avoid the valve body and the seal from being lost due to falling off.

[0018] In a specific embodiment, the limiting member includes a limiting portion and a second installation portion, the second installation portion is installed on the valve body, the limiting portion has an installation hole, and the exhaust pipe passes through the installation hole; the cross-sectional area of the first end is larger than the cross-sectional area of the installation hole, and the cross-sectional area of the exhaust pipe is smaller than the cross-sectional area of the installation hole.

[0019] In this embodiment, making the limiting member include the second installation portion fixedly connected to the valve body can improve the connection reliability between the limiting member and the valve body and avoid the separation between the limiting member and the valve body during use. And the limiting member has a limiting portion including an installation hole, enabling the exhaust pipe to pass through the installation hole, so that the limiting portion can move relative to the exhaust pipe through the installation hole, and thus the valve body and the seal can move relative to the first end. And making the limiting member sleeve on the exhaust pipe through the installation hole, when the valve body moves relative to the exhaust pipe, the limiting member can adjust the movement track of the valve body and the seal when moving in the height direction of the pressure limiting valve, avoiding the inclination between the seal and the exhaust pipe.

[0020] At the same time, the cross-sectional area of ​​the first end is made larger than the cross-sectional area of ​​the mounting hole. When the valve body drives the limiting part to move to abut against the first end, the first end can limit the limiting part from continuing to move, thereby limiting the valve body and the seal from continuing to move, while ensuring that the air outlet seal is released, and preventing the valve body and the seal from being separated from the exhaust pipe under a large steam pressure. Therefore, making the cross-sectional area of ​​the first end larger than the cross-sectional area of ​​the mounting hole can limit the maximum distance that the valve body and the seal move away from the exhaust pipe along the height direction of the pressure limiting valve, preventing the valve body and the seal from being separated from the exhaust pipe, and improving the safety of the pressure limiting valve. And making the cross-sectional area of ​​the mounting hole 114c larger than the cross-sectional area of ​​the exhaust pipe allows the limiting part to move relative to the exhaust pipe along the height direction of the pressure limiting valve.

[0021] In a specific embodiment, the limiting member is a retaining spring sleeved on the exhaust pipe.

[0022] In this embodiment, the limiter is a clip spring sleeved on the exhaust pipe, which has the advantages of compact structure, long service life, convenient operation, high reliability, etc., can reduce the size of the limiter, thereby reducing the overall size of the pressure limiting valve, and is not easy to interfere with other components. At the same time, the limiter is a clip spring, which is not easy to be damaged, and the service life of the limiter can be extended.

[0023] In a second aspect, an embodiment of the present application provides a cooking container, the cooking container comprising: a container body and a container cover, the container cover comprising a cover body and a pressure limiting valve installed on the cover body;

[0024] In this embodiment, when the cooking container is heated and used, the pressure in the container is less than the dead weight of the valve body, the seal and other components installed on the valve body. Under the action of gravity, the outer peripheral wall of the first end of the exhaust pipe is sealed and matched with the side wall of the first accommodating cavity, thereby sealing the air outlet and ensuring the overall sealing of the cooking container. When the pressure in the container is too high, the pressure in the container is greater than the dead weight of the valve body, the seal and other components installed on the valve body. The valve body and the seal are lifted up under the action of the steam flowing to the air outlet, and the sealing of the first accommodating cavity to the air outlet is released, that is, there is a gap between the first accommodating cavity and the first end of the exhaust pipe, so that the container can communicate with the outside world through the gap between the exhaust pipe, the first accommodating cavity and the first end, so that the steam in the container can flow to the air outlet through the air inlet and be discharged from the first accommodating cavity to the outside world, thereby reducing the pressure in the container and ensuring the safety of the cooking container.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 Structural schematic diagram of the pressure limiting valve provided by the present application in a specific embodiment;

[0028] Figure 2 Structural schematic diagram of the pressure limiting valve and the cover body provided by the present application in a specific embodiment;

[0029] Figure 3 Structural schematic diagram of the pressure limiting valve provided by the present application in another specific embodiment;

[0030] Figure 4 For Figure 1 Structural schematic diagram of the seal in

[0031] Figure 5 For Figure 1 Structural schematic diagram of the valve body in

[0032] Figure 6 For Figure 1 Structural schematic diagram of the valve body and the seal in

[0033] Figure 7 For Figure 1 Structural schematic diagram of the limiting member in

[0034] Figure 8 For Figure 1 Structural schematic diagram of the limiting member and the exhaust pipe in

[0035] Figure 9 For Figure 1 Structural schematic diagram of the limiting member and the valve body in

[0036] Figure 10 For Figure 5 Structural schematic diagram of the second valve body in

[0037] Explanation of reference numerals:

[0038] 1 - Container cover;

[0039] 11 - Pressure limiting valve;

[0040] 111 - Valve body;

[0041] 111a - Concave portion;

[0042] 111b - Card slot;

[0043] 111c - First valve body;

[0044] 111d - Second valve body;

[0045] 111e - First connection hole;

[0046] 111f - Step portion;

[0047] 112 - Seal;

[0048] 112a - First accommodation cavity;

[0049] 112b - Sealing portion;

[0050] 112c - First installation portion;

[0051] 113 - Exhaust pipe;

[0052] 113a - Intake port;

[0053] 113b - Outlet;

[0054] 113c - First end;

[0055] 114 - Limiting member;

[0056] 114a - Limiting portion;

[0057] 114b - Second installation portion;

[0058] 114c - Installation hole;

[0059] 115 - Gap;

[0060] 12 - Cover body;

[0061] 121 - Second connection hole; Detailed implementation manners

[0062] For a better understanding of the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0063] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0064] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0065] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0066] An embodiment of the present application provides a pressure limiting valve 11 and a cooking container including the pressure limiting valve 11. The cooking container can be a pressure cooker, a low-pressure cooker, an electric rice cooker, etc. The cooking container includes a container lid 1 and a container body. The container lid 1 can be covered on the container body. Among them, as Figure 1 and Figure 2 shown, the container lid 1 includes a lid body 12 and a pressure limiting valve 11 installed on the lid body 12.

[0067] As Figure 1 shown, the pressure limiting valve 11 includes a valve body 111, a seal 112, and an exhaust pipe 113. The seal 112 is installed inside the valve body 111, and at least part of the structure of the seal 112 can elastically deform. The seal 112 is provided with a first accommodation cavity 112a communicating with the outside. The exhaust pipe 113 has an air inlet 113a and an air outlet 113b oppositely arranged along the height direction of the pressure limiting valve 11. Among them, the exhaust pipe 113 includes a first end 113c along the height direction of the pressure limiting valve 11. The air outlet 113b is arranged at the first end 113c. The first end 113c is located inside the first accommodation cavity 112a, and the outer peripheral wall of the first end 113c can be circumferentially abutted against the side wall of the first accommodation cavity 112a, so that the outer peripheral wall of the first end 113c can be in sealing fit with the side wall of the first accommodation cavity 112a to block the air outlet 113b from communicating with the outside.

[0068] When the pressure limiting valve 11 is installed on the cooking container, as Figure 1 and Figure 2 shown, the exhaust pipe 113 can be installed on the lid body 12. The installation method includes but is not limited to being fixedly connected or detachably connected to the lid body 12 through a connection hole 121 on the lid body 12 of the container lid 1. At this time, the air inlet 113a is located on the side of the lid body 12 away from the pressure limiting valve 11 and communicates with the cavity of the container body.

[0069] When the cooking container is heated and used, when the pressure inside the container body is less than the self-weight of the valve body 111, the seal 112, and other components installed on the valve body 111, under the action of gravity, the outer peripheral wall of the first end 113c of the exhaust pipe 113 is in sealing fit with the side wall of the first accommodation cavity 112a, thereby sealing the air outlet 113b and ensuring the overall sealing performance of the cooking container. At the same time, please refer to Figure 3, when the pressure in the container body is too high, the pressure in the container body is greater than the self-weights of the valve body 111, the seal 112 and other components installed on the valve body 111. The valve body 111 and the seal 112 are lifted by the steam flowing to the air outlet 113b, and the sealing of the first accommodation cavity 112a to the air outlet 113b is released, that is, there is a gap between the first accommodation cavity 112a and the first end 113c of the exhaust pipe 113, enabling the container body to communicate with the outside through the exhaust pipe 113 and the gap between the first accommodation cavity 112a and the first end 113c. Thus, the steam in the container body can flow through the air inlet 113a to the air outlet 113b and be discharged to the outside from the first accommodation cavity 112a, thereby reducing the pressure in the container body and ensuring the use safety of the cooking container.

[0070] Meanwhile, in this embodiment, the pressure-limiting valve 11 opens or blocks the air outlet 113b of the exhaust pipe 113 by the abutment of the first end 113c of the exhaust pipe 113 and the first accommodation cavity 112a of the seal 112, without the need to additionally provide a valve core blocking component, simplifying the overall structure of the pressure-limiting valve 11. And the seal 112 is provided with the first accommodation cavity 112a. Compared with a convex blocking component such as a valve core, it can ensure that the seal 112 is not easily damaged during long-term use, prolonging the service life of the seal 112, and thus prolonging the service life of the pressure-limiting valve 11.

[0071] In addition, in this embodiment, at least part of the structure of the seal 112 can elastically deform, so that the area where the seal 112 abuts against the exhaust pipe 113 can elastically deform, which can further improve the sealing performance after the seal 112 is connected to the first end 113c. And it can avoid the damage of the abutting area between the first end 113c and the seal 112 due to collision when the seal 112 moves along the height direction of the pressure-limiting valve 11 towards the exhaust pipe 113 until it abuts against the exhaust pipe 113, thereby reducing the influence on the sealing effect of the air outlet 113b.

[0072] In a specific embodiment, as Figures 1 to 3 shown, along the direction from the air outlet 113b to the air inlet 113a, the cross-sectional area of the first accommodation cavity 112a can gradually increase.

[0073] In this embodiment, along the direction from the air outlet 113b to the air inlet 113a, the cross-sectional area of the first accommodating cavity 112a gradually increases, so that the side wall of the first accommodating cavity 112a is inclined relative to the height direction of the pressure limiting valve 11, and the cross-sectional area of the portion of the first accommodating cavity 112a that abuts against the outer peripheral wall of the first end 113c is small, thereby improving the sealing reliability of the air outlet 113b. At the same time, the first accommodating cavity 112a with a gradually increasing cross-sectional area does not block the movement of the sealing member 112 along the height direction of the pressure limiting valve 11 relative to the first end 113c, facilitating the release of the seal of the air outlet 113b by the first accommodating cavity 112a and enabling the steam in the container body to be discharged.

[0074] Among them, as Figure 3 shown, the first accommodating cavity 112a in this embodiment can be a cone. In other embodiments, the first accommodating cavity 112a can also be of other shapes, as long as it is ensured that the cross-sectional area of the first accommodating cavity 112a gradually increases along the direction towards the air inlet 113a. The present application does not limit the specific shape of the first accommodating cavity 112a.

[0075] In a specific embodiment, as Figure 3 and Figure 4 shown, along the height direction of the pressure limiting valve 11, the top wall of the first accommodating cavity 112a can be arc-shaped. When the pressure limiting valve 11 is in the Figure 1 shown state, the steam in the container body is discharged from the air outlet 113b of the exhaust pipe 113 into the space enclosed by the first end 113c and the top wall of the first accommodating cavity 112a. At this time, the arc-shaped top wall of the first accommodating cavity 112a can improve the flow stability of the gas in this space. At the same time, when the top wall of the first accommodating cavity 112a is arc-shaped, its surface area is large, reducing the blockage of the first accommodating cavity 112a after long-term use, which affects the discharge rate of steam after the sealing member 112 is lifted, and improving the safety of use of the pressure limiting valve 11. In addition, when the top wall of the first accommodating cavity 112a is arc-shaped, it is convenient to clean the top wall of the first accommodating cavity 112a.

[0076] In a specific embodiment, as Figure 3 and Figure 4 shown, the sealing member 112 can include a sealing portion 112b and a first mounting portion 112c. The first mounting portion 112c is mounted on the valve body 111, the first accommodating cavity 112a is provided in the sealing portion 112b, and the sealing portion 112b can elastically deform.

[0077] In this embodiment, the seal 112 has a first mounting portion 112c mounted on the valve body 111, which can improve the connection reliability between the seal 112 and the valve body 111 and prevent the seal 112 from separating from the valve body 111 during use. At the same time, the seal 112 has a seal portion 112b that can elastically deform. The first receiving cavity 112a is provided in the seal portion 112b, and the side wall of the first receiving cavity 112a is used for sealing cooperation with the first end 113c of the exhaust pipe 113, enabling the seal portion 112b to elastically deform, thereby improving the sealing effect after the connection between the first receiving cavity 112a and the first end 113c, and preventing damage to the first receiving cavity 112a and the first end 113c due to collision, and extending the service life of the pressure limiting valve 11.

[0078] In some embodiments, as Figure 4 shown, the seal portion 112b and the first mounting portion 112c of the seal 112 can be integrally formed of silicone material, that is, all positions of the seal 112 can elastically deform. In other embodiments, in the seal 112, the seal portion 112b can elastically deform to improve the sealing reliability between the exhaust pipe and the seal portion 112b, and the first mounting portion 112c can be made of a rigid material to improve the mounting reliability of the seal 112 to the valve body.

[0079] In a specific embodiment, as Figures 4 to 6 shown, the valve body 111 can include a first valve body 111c and a second valve body 111d. The first valve body 111c is sleeved on the second valve body 111d and is detachably connected, and the first mounting portion 112c is mounted on the second valve body 111d.

[0080] In this embodiment, the first valve body 111c is sleeved on the second valve body 111d, and the user can hold the first valve body 111c to pick up or place the pressure limiting valve 11, improving the convenience of use. And the first valve body 111c and the second valve body 111d are detachably connected, facilitating the installation and replacement of the first valve body 111c and the second valve body 111d.

[0081] In some embodiments, as Figure 5 shown, the first valve body 111c and the second valve body 111d can be threadedly connected. Among them, the inner wall of the first valve body 111c can be provided with internal threads, and the outer wall of the second valve body 111d at the corresponding position can be provided with external threads, or the inner wall of the first valve body 111c can be provided with external threads, and the outer wall of the second valve body 111d at the corresponding position can be provided with internal threads. In other embodiments, the first valve body 111c and the second valve body 111d can also be connected in other detachable ways, such as snap connection.

[0082] At the same time, in this embodiment, as Figure 6As shown, the first mounting portion 112c is mounted on the second valve body 111d, and the seal 112 is arranged facing the exhaust pipe 113, facilitating the abutment of the seal 112 against the exhaust pipe 113, so that the air outlet 113b of the exhaust pipe 113 can be sealed.

[0083] In a specific embodiment, as Figures 4 to 6 shown, a first connection hole 111e may be provided in the top wall of the second valve body 111d, and the seal 112 is mounted on the second valve body 111d through the first connection hole 111e. The two ends of the top wall of the second valve body 111d along the height direction of the pressure limiting valve 11 are respectively in abutment with the sealing portion 112b and the first mounting portion 112c.

[0084] In this embodiment, the seal 112 is mounted on the second valve body 111d through the first connection hole 111e, improving the connection reliability between the seal 112 and the second valve body 111d. Also, the two ends of the top wall of the second valve body 111d along the height direction of the pressure limiting valve are respectively in abutment with the sealing portion 112b and the first mounting portion 112c. Thus, the top wall of the second valve body 111d is clamped by the first mounting portion 112c and the sealing portion 112b of the seal 112, realizing the connection between the seal 112 and the second valve body 111d, further improving the connection reliability and stability between the seal 112 and the second valve body 111d, and at the same time being able to provide positioning for the installation of the seal 112.

[0085] In a specific embodiment, as Figure 3 shown, the first valve body 111c can be made of a material with good heat insulation properties, such as wood or rubber. During the use of the cooking container, since the steam flows through the air outlet 113b of the exhaust pipe 113 to the first accommodating cavity 112a and the steam has a relatively high temperature, making the first valve body 111c a material with good heat insulation properties can prevent the heat of the steam from being conducted to the first valve body 111c, preventing the user from being scalded when touching the first valve body 111c and improving the use safety of the pressure limiting valve 11.

[0086] In a specific embodiment, as Figures 1 to 3 shown, the cross-sectional area of the first end 113c can be larger than the cross-sectional area of the exhaust pipe 113, that is, the first end 113c protrudes outward relative to the exhaust pipe 113. Among them, the direction of the cross-section in this embodiment can be the up-and-down direction as Figure 3 described, that is, the height direction of the pressure limiting valve 11.

[0087] In this embodiment, the first end 113c of the exhaust pipe 113 is used to abut against the first accommodation cavity 112a to seal the air outlet 113b, such that the cross-sectional area of the first end 113c is greater than the cross-sectional area of the exhaust pipe 113. Thus, when the first end 113c abuts against the first accommodation cavity 112a, the connection stability between the first end 113c and the first accommodation cavity 112a is enhanced, thereby reducing the occurrence of the tilting phenomenon of the valve body 111 relative to the exhaust pipe 113.

[0088] In a specific embodiment, as Figure 3 and Figure 7 shown, the pressure limiting valve 11 may further include a limiting member 114. The limiting member 114 is fixedly connected to the valve body 111, and the limiting member 114 is used to prevent the first end 113c from detaching from the first accommodation cavity 112a. Herein, the fixed connection between the limiting member 114 and the valve body 111 means that the limiting member 114 and the valve body 111 are in a relatively fixed state during the operation of the pressure limiting valve 11. When the pressure limiting valve 11 is in a non-operating state, the limiting member 114 can be detached from the valve body 111, or the limiting member 114 can be fixed to the valve body 111, that is, the limiting member 114 and the valve body 111 can be detachably fixedly connected or non-detachably fixedly connected.

[0089] In this embodiment, when the pressure of the steam in the container body is greater than the self-weight of the valve body 111, the sealing member 112, and other components installed on the valve body 111, the valve body 111 and the sealing member 112 move away from the exhaust pipe 113 along the height direction of the pressure limiting valve 11 under the drive of the steam in the container body. The limiting member 114 fixedly connected to the valve body 111 limits the maximum distance that the valve body 111 and the sealing member 112 move away from the exhaust pipe 113 along the height direction of the pressure limiting valve 11, preventing the valve body 111 and the sealing member 112 from falling off, enhancing the use safety of the pressure limiting valve 11, and avoiding the loss of the valve body 111 and the sealing member 112 due to falling off.

[0090] In a specific embodiment, as Figure 3 、 Figure 7 and Figure 8 shown, the limiting member 114 may include a limiting portion 114a and a second mounting portion 114b. The second mounting portion 114b is mounted on the valve body 111. The limiting portion 114a has a mounting hole 114c. The exhaust pipe 113 passes through the mounting hole 114c. The cross-sectional area of the first end 113c is greater than the cross-sectional area of the mounting hole 114c, and the cross-sectional area of the exhaust pipe 113 is smaller than the cross-sectional area of the mounting hole 114c

[0091] In this embodiment, the limiting member 114 includes a second mounting portion 114b fixedly connected to the valve body 111, which can improve the connection reliability between the limiting member 114 and the valve body 111 and prevent the limiting member 114 from separating from the valve body 111 during use. The limiting member 114 has a limiting portion 114a including a mounting hole 114c, allowing the exhaust pipe 113 to pass through the mounting hole 114c, so that the limiting portion 114a can move relative to the exhaust pipe 113 through the mounting hole 114c, enabling the valve body 111 and the sealing member 112 to move relative to the first end 113c. The limiting member 114 is sleeved on the exhaust pipe 113 through the mounting hole 114c. When the valve body 111 moves relative to the exhaust pipe 113, the limiting member 114 can adjust the movement trajectory of the valve body 111 and the sealing member 112 when moving along the height direction of the pressure limiting valve 11, preventing the sealing member 112 from tilting relative to the exhaust pipe 113.

[0092] Meanwhile, the cross-sectional area of the first end 113c is made larger than that of the mounting hole 114c. When the valve body 111 drives the limiting portion 114a to move until it abuts against the first end 113c, the first end 113c can limit the further movement of the limiting portion 114a, thereby restricting the further movement of the valve body 111 and the sealing member 112. While ensuring the unsealing of the air outlet 113b, it prevents the valve body 111 and the sealing member 112 from detaching from the exhaust pipe 113 under a large steam pressure. Therefore, making the cross-sectional area of the first end 113c larger than that of the mounting hole 114c can limit the maximum distance that the valve body 111 and the sealing member 112 move away from the exhaust pipe 113 along the height direction of the pressure limiting valve 11, prevent the valve body 111 and the sealing member 112 from detaching from the exhaust pipe 113, and improve the use safety of the pressure limiting valve 11.

[0093] As Figure 8 shown, the cross-sectional area of the mounting hole 114c is larger than that of the exhaust pipe 113, enabling the limiting member to move relative to the exhaust pipe 113 along the height direction of the pressure limiting valve.

[0094] In a specific embodiment, as Figure 3 and Figure 9 shown, a clamping groove 111b can be provided on the inner wall of the valve body 111. The clamping groove 111b is located on the side of the first accommodation cavity 112a facing the air inlet 113a, and the second mounting portion 114b is clamped in the clamping groove 111b.

[0095] In this embodiment, a clamping groove 111b is provided on the inner wall of the valve body 111, and the second mounting portion 114b is clamped in the clamping groove 111b, which can improve the connection reliability between the second mounting portion 114b and the valve body 111, thereby improving the connection reliability between the limiting member 114 and the valve body 111, and preventing the limiting member 114 from separating from the valve body 111 during use. And the clamping groove 111b is located on the side of the first accommodating cavity 112a facing the air inlet 113a, that is, the limiting member 114 is arranged along the height direction of the pressure limiting valve 11 away from the first end 113c, so as to extend the distance that the limiting member 114 can move relative to the exhaust pipe 113 along the height direction of the pressure limiting valve 11, that is, to extend the distance that the sealing member 112 moves relative to the first end 113c along the height direction of the pressure limiting valve 11, ensuring that the first accommodating cavity 112a can move to release the sealing of the air outlet 113b of the exhaust pipe 113.

[0096] In a specific embodiment, the limiting member 114 can be a snap ring sleeved on the exhaust pipe 113.

[0097] In this embodiment, the limiting member 114 is a snap ring sleeved on the exhaust pipe 113, which has the advantages of compact structure, long service life, convenient operation, high reliability, etc. It can reduce the size of the limiting member 114, thereby reducing the overall size of the pressure limiting valve 11, and is not likely to interfere with other components. At the same time, making the limiting member 114 a snap ring is not easy to be damaged, and can extend the service life of the limiting member 114.

[0098] In a specific embodiment, as Figure 6 shown, there may be a gap 115 between the first mounting portion 112c and the first valve body 111c along the height direction of the pressure limiting valve.

[0099] In this embodiment, a gap 115 is provided between the first mounting portion 112c and the first valve body 111c along the height direction of the pressure limiting valve. When the valve body 111 and the sealing member 112 are installed or used, this gap 115 can prevent problems such as impossible installation or interference caused by machining errors or thermal expansion and contraction, etc., ensuring the normal installation and use of the pressure limiting valve.

[0100] In a specific embodiment, as Figure 5 and Figure 10 shown, the second valve body 111d has a stepped portion 111f, and the bottom wall of the first valve body 111c abuts against the stepped portion 111f.

[0101] In this embodiment, when the first valve body 111c is sleeved on the second valve body 111d, the bottom wall of the first valve body 111c can abut against the step portion 111f, further improving the connection reliability between the first valve body 111c and the second valve body 111d, and avoiding the separation of the first valve body 111c and the second valve body 111d during use. Moreover, the step portion 111f can provide positioning for the installation of the first valve body 111c, so as to reserve an assembly gap between the first valve body 111c and the first installation portion 112c, ensuring the normal installation of the first valve body 111c, the second valve body 111d and the seal 112.

[0102] In a specific embodiment, as Figure 5 shown, the side wall of the first valve body 111c may be circumferentially provided with a recessed portion 111a.

[0103] In this embodiment, the side wall of the first valve body 111c is circumferentially provided with a recessed portion 111a, which is convenient for the user to take or place the valve body 111 through the first valve body 111c, further improving the convenience of use.

[0104] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure limiting valve, characterized in that: The pressure limiting valve (11) comprises: Valve body (111); A sealing member (112), the sealing member (112) being installed in the valve body (111), and at least a part of the structure of the sealing member (112) being elastically deformable; the sealing member (112) being provided with a first accommodating cavity (112a) communicating with the outside; An exhaust pipe (113), the exhaust pipe (113) comprising an air inlet (113a) and an air outlet (113b) which are arranged opposite to each other along a height direction of the pressure limiting valve (11); The exhaust pipe (113) includes a first end (113c) along the height direction of the pressure limiting valve (11), the air outlet (113b) is arranged at the first end (113c), the first end (113c) is located in the first accommodating cavity (112a), and the outer peripheral wall of the first end (113c) can be sealed with the side wall of the first accommodating cavity (112a) to block the air outlet (113b) from the outside.

2. The pressure limiting valve according to claim 1, characterized in that: Along the direction from the air outlet (113b) to the air inlet (113a), the cross-sectional area of ​​the first accommodating cavity (112a) gradually increases.

3. The pressure limiting valve according to claim 1, characterized in that: The sealing member (112) comprises a sealing portion (112b) and a first mounting portion (112c), wherein the first mounting portion (112c) is mounted on the valve body (111), the first accommodating cavity (112a) is arranged on the sealing portion (112b), and the sealing portion (112b) is elastically deformable.

4. The pressure limiting valve according to claim 3, characterized in that: The valve body (111) comprises a first valve body (111c) and a second valve body (111d); the first valve body (111c) is sleeved on the second valve body (111d) and is detachably connected; and the first mounting portion (112c) is mounted on the second valve body (111d).

5. The pressure limiting valve according to claim 4, characterized in that: The top wall of the second valve body (111d) is provided with a first connecting hole (111e), and the sealing member (112) is mounted on the second valve body (111d) through the first connecting hole (111e); the top wall of the second valve body (111d) is respectively in contact with the sealing portion (112b) and the first mounting portion (112c) at two ends along the height direction of the pressure-limiting valve (11).

6. The pressure limiting valve according to any one of claims 1 to 5, characterized in that: The cross-sectional area of ​​the first end (113c) is greater than the cross-sectional area of ​​the exhaust pipe (113).

7. The pressure limiting valve according to any one of claims 1 to 5, characterized in that: The pressure-limiting valve (11) further comprises a limiting member (114), the limiting member (114) being fixedly connected to the valve body (111), the limiting member (114) being used to limit the first end (113c) from leaving the first accommodating chamber (112a).

8. The pressure limiting valve according to claim 7, characterized in that: The limiting member (114) comprises a limiting portion (114a) and a second mounting portion (114b), the second mounting portion (114b) being mounted on the valve body (111), the limiting portion (114a) having a mounting hole (114c), and the exhaust pipe (113) passing through the mounting hole (114c); The cross-sectional area of ​​the first end (113c) is larger than the cross-sectional area of ​​the mounting hole (114c), and the cross-sectional area of ​​the exhaust pipe (113) is smaller than the cross-sectional area of ​​the mounting hole (114c).

9. The pressure limiting valve according to claim 7, characterized in that: The limiting member (114) is a retaining spring sleeved on the exhaust pipe (113).

10. A cooking container, characterized in that: The cooking container comprises: container body; A container cover (1), the container cover (1) comprising a cover body (12) and a pressure limiting valve (11) mounted on the cover body (12); Wherein, the pressure-limiting valve (11) is the pressure-limiting valve (11) according to any one of claims 1 to 9.

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