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 and an exhaust pipe, the valve body is provided with a first containing cavity communicated with the outside, and 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 further 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, and 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 are blocked. Meanwhile, the sectional area of the first containing cavity is gradually increased in the direction from the air outlet to the air inlet. According to the pressure-limiting valve, the first end of the exhaust pipe abuts against the side wall of the first containing cavity of the valve body, so that the air outlet of the exhaust pipe is opened or blocked, blocking components such as a valve element do not need to be additionally arranged, the overall structure of the pressure-limiting valve is simplified, the possibility that components in the pressure-limiting valve are damaged in the long-time using process can be reduced, and the service life of the pressure-limiting valve is prolonged. And 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 commonly used in people's daily lives. When the pressure cooker is heated, steam is generated inside. The increasing steam causes the pressure inside 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 pressure inside the pressure cooker is too high, some steam in the pressure cooker can be discharged to the outside through the pressure limiting valve, thereby reducing the pressure. However, during long-term use, the valve core in the pressure limiting valve 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 provided with a first accommodation cavity communicating with the outside; an exhaust pipe having 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 hermetically fitted with the side wall of the first accommodation cavity to block the air outlet from communicating with the outside; along the direction from the air outlet to the air inlet, the cross-sectional area of the first accommodation cavity gradually increases.

[0005] In this embodiment, along the direction from the air outlet to the air inlet, the cross-sectional area of the first accommodation cavity is gradually increased, 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 in contact with 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 valve body relative to the first end along the height direction of the pressure limiting valve, 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. The pressure limiting valve opens or blocks the air outlet of the exhaust pipe by the abutment of the first end of the exhaust pipe with the side wall of the first accommodation cavity of the valve body, without the need to additionally provide a plugging component such as a valve core, simplifying the overall structure of the pressure limiting valve, and reducing the possibility of damage to the components in the pressure limiting valve during long-term use, thereby extending the service life of the pressure limiting valve.

[0006] In a specific embodiment, the first accommodation cavity is a cone, and the first end is spherical.

[0007] In this embodiment, the first accommodation cavity is a cone and the first end is spherical. On the one hand, it can improve the sealing performance at the connection between the first end and the first accommodation cavity, thereby enhancing the overall sealing performance of the cooking container and improving the sealing effect of the cooking container. On the other hand, it can make the outer peripheral wall at the contact between the first end and the first accommodation cavity be arc-shaped, avoiding damage to the outer peripheral wall of the first end or the side wall of the first accommodation cavity due to collision when the first accommodation cavity moves along the height direction of the pressure limiting valve towards the exhaust pipe and abuts against the exhaust pipe, thereby reducing the impact on the sealing effect of the air outlet.

[0008] In a specific embodiment, the cross-sectional area of the first end is larger than the cross-sectional area of the exhaust pipe.

[0009] In this embodiment, the first end of the exhaust pipe is used to abut against the first accommodation cavity to seal the air outlet. Making the cross-sectional area of the first end larger than the cross-sectional area of the exhaust pipe can improve the connection stability between the first end and the first accommodation cavity when the first end abuts against the first accommodation cavity, and further reduce the occurrence of the tilting phenomenon of the valve body relative to the exhaust pipe.

[0010] 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 disengaging from the first accommodation cavity.

[0011] In this embodiment, when the pressure of the steam in the container body is greater than the self-weight of the valve body and other components installed on the valve body, the valve body moves along the height direction of the pressure limiting valve away from the exhaust pipe 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 moves along the height direction of the pressure limiting valve away from the exhaust pipe, avoiding the separation of the valve body from the exhaust pipe, improving the use safety of the pressure limiting valve, and being able to avoid the loss of the valve body due to falling off.

[0012] In a specific embodiment, the limiting member includes a limiting portion and a mounting portion. The mounting portion is mounted on the valve body. The limiting portion has a mounting hole, and the exhaust pipe passes through the mounting hole; the cross-sectional area of the first end is larger than the cross-sectional area of the mounting hole, and the cross-sectional area of the exhaust pipe is smaller than the cross-sectional area of the mounting hole.

[0013] In this embodiment, making the limiting member include a mounting portion fixedly connected to the valve body can improve the connection reliability between the limiting member and the valve body, avoiding the separation of the limiting member and the valve body during use. And the limiting member has a limiting portion including a mounting hole, enabling the exhaust pipe to pass through the mounting hole, so that the limiting portion can move relative to the exhaust pipe through the mounting hole, and thus the valve body can move relative to the first end. And making the limiting member sleeved on the exhaust pipe through the mounting hole, when the valve body moves relative to the exhaust pipe, the limiting member can adjust the movement trajectory of the valve body when moving along the height direction of the pressure limiting valve, avoiding the tilting between the valve body and the exhaust pipe.

[0014] Meanwhile, make the cross-sectional area of the first end larger than that of the mounting hole. When the valve body drives the limiting part to move until it abuts against the first end, the first end can limit the continuous movement of the limiting part, thereby restricting the continuous movement of the valve body. While ensuring the sealing of the air outlet is released, it can prevent the valve body from detaching from the exhaust pipe under a large steam pressure. Therefore, making the cross-sectional area of the first end larger than that of the mounting hole can limit the maximum distance that the valve body moves away from the exhaust pipe along the height direction of the pressure limiting valve, prevent the valve body from detaching, and improve the safety of using the pressure limiting valve.

[0015] In a specific embodiment, a clamping groove is provided on the inner wall of the valve body. The clamping groove is located on one side of the first accommodating cavity facing the air inlet, and the mounting part is clamped in the clamping groove.

[0016] In this embodiment, clamping the mounting part on the clamping groove on the inner wall of the valve body can improve the connection reliability between the mounting part and the valve body and prevent the limiting part from separating from the valve body during use. And making the clamping groove located on one side of the first accommodating cavity facing the air inlet, even if the limiting part is at the first end far from the exhaust pipe, thus extending the distance that the limiting part can move relative to the exhaust pipe along the height direction of the pressure limiting valve, that is, extending the distance that the valve body moves relative to the first end along the height direction of the pressure limiting valve, ensuring that the first accommodating cavity can move to release the sealing of the air outlet of the exhaust pipe.

[0017] In a specific embodiment, the limiting part is a snap ring sleeved on the exhaust pipe.

[0018] In this embodiment, making the limiting part a snap ring has the advantages of compact structure, long service life, convenient operation, high reliability, etc. It can reduce the size of the limiting part, thereby reducing the overall size of the pressure limiting valve and is not likely to interfere with other components. At the same time, making the limiting part a snap ring is not easily damaged and can extend the service life of the limiting part.

[0019] 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. The first accommodating cavity is provided in the second valve body.

[0020] In this embodiment, the first valve body is sleeved on the second valve body, and users can take or place the pressure limiting valve through the first valve body, improving the convenience of use. And making the first valve body and the second valve body detachably connected facilitates the installation and replacement of the first valve body and the second valve body.

[0021] In a specific embodiment, along the height direction of the pressure limiting valve, there is a gap between the first valve body and the second valve body; the second valve body has a stepped portion, and the bottom wall of the first valve body abuts against the stepped portion.

[0022] In this embodiment, a gap is provided between the first valve body and the second valve body along the height direction of the pressure-limiting valve. When the first valve body and the second valve body are installed or used, the gap can avoid undesirable phenomena such as inability to install or interference due to processing errors or thermal expansion and contraction, thereby ensuring the normal installation and use of the pressure-limiting valve. At the same time, when the first valve body is sleeved on the second valve body, the bottom wall of the first valve body can abut against the step portion, further improving the connection reliability of the first valve body and the second valve body, and avoiding the separation of the first valve body and the second valve body during use. The step portion can provide positioning for the installation of the first valve body, so that an assembly gap can be reserved between the first valve body and the second valve body, thereby ensuring the normal installation of the first valve body and the second valve body.

[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 arranged 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 and other components mounted 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 and other components mounted on the valve body. The valve body is lifted up under the action of 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] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

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

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

[0030] Figure 4 is Figure 1 Structural schematic diagram of the exhaust pipe in

[0031] Figure 5 is Figure 1 Structural schematic diagram of the limiting member in

[0032] Figure 6 is Figure 1 Structural schematic diagram of the limiting member and the exhaust pipe in

[0033] Figure 7 is Figure 1 Structural schematic diagram of the limiting member and the valve body in

[0034] Figure 8 is Figure 1 Structural schematic diagram of the valve body in

[0035] Figure 9 is Figure 8 Structural schematic diagram of the second valve body in

[0036] Explanation of reference numerals:

[0037] 1 - Container cover;

[0038] 11 - Pressure limiting valve;

[0039] 111 - Valve body;

[0040] 111a - First accommodation cavity;

[0041] 111b - Card slot;

[0042] 111c - First valve body;

[0043] 111d - Second valve body;

[0044] 111e - Step portion;

[0045] 111f - Concave portion;

[0046] 112 - Exhaust pipe;

[0047] 112a - Intake port;

[0048] 112b - Outlet port;

[0049] 112c - First end;

[0050] 113 - Limiting member;

[0051] 113a - Limiting part;

[0052] 113b - Mounting part;

[0053] 113c - Mounting hole;

[0054] 114 - Gap;

[0055] 12 - Cover body;

[0056] 121 - Connecting hole. Specific embodiments

[0057] For a better understanding of the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0058] 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.

[0059] 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.

[0060] It should be understood that the term " / and" used herein is only a description of the associated relationship of the associated objects, indicating that there can be three relationships. For example, a and / or b can represent: a exists alone, a and b exist simultaneously, and b exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0061] The embodiments of the present application provide a pressure limiting valve 11 and a cooking container including the pressure limiting valve 11. The cooking container can be a pressure cooker, a micro-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 cover body 12 and a pressure limiting valve 11 installed on the cover body 12.

[0062] As Figure 1As shown, the pressure limiting valve 11 includes a valve body 111 and an exhaust pipe 112. The valve body 111 is provided with a first accommodating chamber 111a communicating with the outside world. The exhaust pipe 112 has an air inlet 112a and an air outlet 112b arranged relatively along the height direction of the pressure limiting valve 11. The exhaust pipe 112 also includes a first end 112c along the height direction of the pressure limiting valve 11. The air outlet 112b is arranged at the first end 112c. The first end 112c is located in the first accommodating chamber 111a. The outer peripheral wall of the first end 112c can be circumferentially abutted with the side wall of the first accommodating chamber 111a, so that the outer peripheral wall of the first end 112c can be sealed with the side wall of the first accommodating chamber 111a, thereby blocking the air outlet 112b from the outside world. At the same time, along the direction from the air outlet 112b to the air inlet 112a, the cross-sectional area of ​​the first accommodating chamber 111a gradually increases.

[0063] When the pressure limiting valve 11 is used for a cooking container, Figure 1 and Figure 2 As shown, the exhaust pipe 112 can be installed on the cover body 12, and the installation method includes but is not limited to being fixedly connected or detachably connected to the cover body 12 through the connecting hole 121 on the cover body 12 of the container cover 1. At this time, the air inlet 112a is located on the side of the cover body 12 away from the pressure limiting valve 11, and is connected to the inner cavity of the container body.

[0064] When the cooking container is heated and used, the pressure inside the container is less than the weight of the valve body 111 and other components mounted on the valve body 111. Under the action of gravity, the outer peripheral wall of the first end 112c of the exhaust pipe 112 is sealed with the side wall of the first accommodating cavity 111a, thereby sealing the air outlet 112b and ensuring the overall sealing of the cooking container. Figure 3 When the pressure in the container is too high, the pressure in the container is greater than the deadweight of the valve body 111 and other components installed on the valve body 111, and the valve body 111 is lifted up by the steam flowing to the gas outlet 112b, releasing the sealing of the first accommodating chamber 111a on the gas outlet 112b, that is, there is a gap between the first accommodating chamber 111a and the first end 112c of the exhaust pipe 112, so that the container can communicate with the outside world through the gap between the exhaust pipe 112, the first accommodating chamber 111a and the first end 112c, so that the steam in the container can flow to the gas outlet 112b through the air inlet 112a, and be discharged from the first accommodating chamber 111a to the outside world, thereby reducing the pressure in the container and ensuring the safety of the cooking container.

[0065] Meanwhile, in this embodiment, along the direction from the air outlet 112b to the air inlet 112a, the cross-sectional area of the first accommodation cavity 111a gradually increases, so that the side wall of the first accommodation cavity 111a is inclined relative to the height direction of the pressure limiting valve 11, and the cross-sectional area of the part of the first accommodation cavity 111a that abuts against the outer peripheral wall of the first end 112c is small, thereby improving the sealing reliability of the air outlet 112b. At the same time, the first accommodation cavity 111a with a gradually increasing cross-sectional area does not block the movement of the valve body 111 relative to the first end 112c along the height direction of the pressure limiting valve 11, thereby facilitating the release of the seal of the first accommodation cavity 111a on the air outlet 112b and enabling the steam in the container body to be discharged.

[0066] In addition, in this embodiment, the pressure limiting valve 11 abuts against the side wall of the first accommodation cavity 111a of the valve body 111 through the first end 112c of the exhaust pipe 112, so as to open or block the air outlet 112b of the exhaust pipe 112. There is no need to additionally provide a plugging component such as a valve core, which simplifies the overall structure of the pressure limiting valve 11 and can reduce the possibility of damage to the components in the pressure limiting valve 11 during long-term use, thereby extending the service life of the pressure limiting valve 11.

[0067] In a specific embodiment, as Figures 1 to 4 shown, the first accommodation cavity 111a can be a cone, and the first end 112c can be a sphere.

[0068] In this embodiment, making the first accommodation cavity 111a a cone and the first end 112c a sphere can, on the one hand, improve the sealing performance at the connection between the first end 112c and the first accommodation cavity 111a, thereby improving the overall sealing performance of the cooking container and enhancing the sealing effect of the cooking container. On the other hand, it can make the outer peripheral wall at the abutting part of the first end 112c and the first accommodation cavity 111a arc-shaped, avoiding damage to the outer peripheral wall of the first end 112c or the side wall of the first accommodation cavity 111a due to collision when the first accommodation cavity 111a moves along the height direction of the pressure limiting valve 11 towards the exhaust pipe 112 until it abuts against the exhaust pipe 112, thereby reducing the impact on the sealing effect of the air outlet 112b.

[0069] In other embodiments, the first accommodation cavity can be a frustum of a cone, and the first end can be a cylinder (not shown in the figure).

[0070] In a specific embodiment, as Figure 3 shown, along the height direction of the pressure limiting valve 11, the top wall of the first accommodation cavity 111a can be arc-shaped. When the pressure limiting valve 11 is in Figure 1When in the state shown, the steam in the container body is discharged from the air outlet 112b of the exhaust pipe 112 into the space enclosed by the first end 112c and the top wall of the first accommodation cavity 111a. At this time, the top wall of the first accommodation cavity 111a is arc-shaped, which can improve the flow stability of the gas in this space. At the same time, when the top wall of the first accommodation cavity 111a is arc-shaped, its surface area is relatively large, reducing the blockage of the first accommodation cavity 111a after long-term use, which may affect the steam discharge rate after the valve body 111 is lifted, and enhancing the use safety of the pressure limiting valve 11. In addition, when the top wall of the first accommodation cavity 111a is arc-shaped, it is convenient to clean the top wall of the first accommodation cavity 111a.

[0071] In a specific embodiment, as Figures 1 to 3 shown, the cross-sectional area of the first end 112c can be larger than the cross-sectional area of the exhaust pipe 112, that is, the first end 112c protrudes outward relative to the exhaust pipe 112. Among them, the direction of the cross-section in this embodiment can be the up-and-down direction as Figure 3 shown, that is, the height direction of the pressure limiting valve 11.

[0072] In this embodiment, the first end 112c of the exhaust pipe 112 is used to abut against the first accommodation cavity 111a to seal the air outlet 112b, so that the cross-sectional area of the first end 112c is larger than the cross-sectional area of the exhaust pipe 112. Thus, when the first end 112c abuts against the first accommodation cavity 111a, the connection stability between the first end 112c and the first accommodation cavity 111a is improved, and further the occurrence of the inclination phenomenon of the valve body 111 relative to the exhaust pipe 112 is reduced.

[0073] In some embodiments, as Figure 3 shown, when the first end 112c is spherical, the diameter of the first end 112c is larger than the diameter of the exhaust pipe 112. In other embodiments, when the first end 112c is of other shapes, the cross-sectional area of the first end 112c is larger than the cross-sectional area of the exhaust pipe 112.

[0074] In a specific embodiment, as Figure 3 and Figure 5 shown, the pressure limiting valve 11 may further include a limiting member 113. The limiting member 113 is fixedly connected to the valve body 111, and the limiting member 113 is used to limit the first end 112c from detaching from the first accommodation cavity 111a. Among them, the fixed connection between the limiting member 113 and the valve body 111 means that the limiting member 113 and the valve body 111 are in a relatively fixed state during the working process of the pressure limiting valve 11. When the pressure limiting valve 11 is in a non-working state, the limiting member 113 can be detached from the valve body 111, and the limiting member 113 can also be fixed to the valve body 111, that is, the limiting member 113 and the valve body 111 can be detachably fixedly connected or non-detachably fixedly connected.

[0075] In this embodiment, when the pressure of the steam in the container body is greater than the self-weight of the valve body 111 and other components installed on the valve body 111, the valve body 111 moves away from the exhaust pipe 112 along the height direction of the pressure limiting valve 11 under the drive of the steam in the container body. The maximum distance that the valve body 111 moves away from the exhaust pipe 112 along the height direction of the pressure limiting valve 11 is limited by the limiting member 113 fixedly connected to the valve body 111, avoiding the separation of the valve body 111 from the exhaust pipe 112, improving the use safety of the pressure limiting valve 11, and being able to avoid the loss of the valve body 111 due to falling off.

[0076] In a specific embodiment, as Figure 3 , Figure 5 and Figure 6 shown, the limiting member 113 may include a limiting portion 113a and a mounting portion 113b. The mounting portion 113b is mounted on the valve body 111. The limiting portion 113a has a mounting hole 113c, and the exhaust pipe 112 passes through the mounting hole 113c. The cross-sectional area of the first end 112c is larger than the cross-sectional area of the mounting hole 113c.

[0077] In this embodiment, making the limiting member 113 include the mounting portion 113b fixedly connected to the valve body 111 can improve the connection reliability between the limiting member 113 and the valve body 111, avoiding the separation of the limiting member 113 from the valve body 111 during use. And the limiting member 113 has a limiting portion 113a including a mounting hole 113c, enabling the exhaust pipe 112 to pass through the mounting hole 113c, so that the limiting portion 113a can move relative to the exhaust pipe 112 through the mounting hole 113c, and thus the valve body can move relative to the first end 112c. And making the limiting member 113 sleeved on the exhaust pipe 112 through the mounting hole 113c, when the valve body 111 moves relative to the exhaust pipe 112, the limiting member 113 can adjust the movement track of the valve body 111 when moving along the height direction of the pressure limiting valve 11, avoiding the inclination between the valve body 111 and the exhaust pipe 112.

[0078] At the same time, making the cross-sectional area of the first end 112c larger than the cross-sectional area of the mounting hole 113c, as Figure 3 shown, when the valve body 111 drives the limiting portion 113a to move until it abuts against the first end 112c, the first end 112c can limit the further movement of the limiting portion 113a, thereby limiting the further movement of the valve body 111. While ensuring the unsealing of the air outlet 112b, it can avoid the separation of the valve body 111 from the exhaust pipe 112 under a large steam pressure. Therefore, making the cross-sectional area of the first end 112c larger than the cross-sectional area of the mounting hole 113c can limit the maximum distance that the valve body 111 moves away from the exhaust pipe 112 along the height direction of the pressure limiting valve 11, avoiding the separation of the valve body 111 and improving the use safety of the pressure limiting valve 11.

[0079] As Figure 6In the illustrated embodiment, the cross-sectional area of the mounting hole 113c is larger than the cross-sectional area of the exhaust pipe 112, enabling the limiting member to move relative to the exhaust pipe 112 in the height direction of the pressure limiting valve.

[0080] In a specific embodiment, as Figure 1 , Figure 6 and Figure 7 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 accommodating cavity 111a facing the air inlet 112a, and the mounting portion 113b is clamped in the clamping groove 111b.

[0081] In this embodiment, by clamping the mounting portion 113b on the clamping groove 111b on the inner wall of the valve body 111, the connection reliability between the mounting portion 113c and the valve body 111 can be improved, and the separation of the limiting member 113 and the valve body 111 during use can be avoided. And by making the clamping groove 111b located on the side of the first accommodating cavity 111a facing the air inlet 112a, even if the limiting member 113 is away from the first end 112c of the exhaust pipe 112, thereby extending the distance that the limiting member 113 can move relative to the exhaust pipe 112 in the height direction of the pressure limiting valve 11, that is, extending the distance that the valve body 111 can move relative to the first end 112c in the height direction of the pressure limiting valve 11, ensuring that the first accommodating cavity 111a can move to release the seal of the air outlet 112b of the exhaust pipe 112.

[0082] In a specific embodiment, the limiting member 113 can be a snap ring sleeved on the exhaust pipe 112.

[0083] In this embodiment, making the limiting member 113 a snap ring has the advantages of compact structure, long service life, convenient operation, high reliability, etc. It can reduce the size of the limiting member 113, thereby reducing the overall size of the pressure limiting valve 11, and is not prone to interference with other components. At the same time, making the limiting member 113 a snap ring is not easily damaged and can extend the service life of the limiting member 113.

[0084] In the above embodiments, as Figure 8 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. The first accommodating cavity 111a is provided in the second valve body 111d.

[0085] In this embodiment, with the first valve body 111c sleeved on the second valve body 111d, users can take or place the pressure limiting valve 11 through the first valve body 111c, improving the convenience of use. And making the first valve body 111c and the second valve body 111d detachably connected facilitates the installation and replacement of the first valve body 111c and the second valve body 111d.

[0086] In some embodiments, as Figure 8As 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 other detachable connection methods, such as snap connection.

[0087] In a specific embodiment, as Figure 1 shown, the first valve body 111c can be made of a material with good heat insulation, such as wood or rubber. During the use of the cooking container, since the steam flows through the air outlet 112b of the exhaust hole 112 to the first accommodation cavity 111a, and the steam has a relatively high temperature, making the first valve body 111c a material with good heat insulation can avoid the heat of the steam 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.

[0088] In a specific embodiment, as Figure 8 shown, along the height direction of the pressure limiting valve, there can be a gap 114 between the first valve body 111c and the second valve body 111d.

[0089] In this embodiment, along the height direction of the pressure limiting valve, a gap 114 is provided between the first valve body 111c and the second valve body 111d. When the first valve body 111c and the second valve body 111d are installed or used, this gap 114 can avoid bad phenomena such as inability to install or interference due to processing errors or thermal expansion and contraction, etc., ensuring the normal installation and use of the pressure limiting valve.

[0090] In a specific embodiment, as Figure 8 and Figure 9 shown, the second valve body 111d can have a stepped portion 111e, and the bottom wall of the first valve body 111c abuts against the stepped portion 111e.

[0091] 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 stepped portion 111e, further improving the connection reliability between the first valve body 111c and the second valve body 111d and avoiding the separation phenomenon between the first valve body 111c and the second valve body 111d during use. And the stepped portion 111e can provide positioning for the installation of the first valve body 111c, enabling an assembly gap to be reserved between the first valve body 111c and the second valve body 111d and ensuring the normal installation of the first valve body 111c and the second valve body 111d.

[0092] In a specific embodiment, asFigure 8 As shown, the side wall of the first valve body 111c may be circumferentially provided with a recess 111f.

[0093] In this embodiment, the side wall of the first valve body 111c is circumferentially provided with a recess 111f, which facilitates the user to take or place the valve body 111 through the first valve body 111c, further improving the usability.

[0094] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A pressure limiting valve, characterized in that: The pressure limiting valve (11) comprises: A valve body (111), wherein the valve body (111) is provided with a first accommodating chamber (111a) communicating with the outside; An exhaust pipe (112), the exhaust pipe (112) comprising an air inlet (112a) and an air outlet (112b) which are arranged opposite to each other along a height direction of the pressure limiting valve (11); The exhaust pipe (112) comprises a first end (112c) along the height direction of the pressure limiting valve (11), the air outlet (112b) is arranged at the first end (112c), the first end (112c) is located in the first accommodating cavity (111a), and the outer peripheral wall of the first end (112c) can be sealed with the side wall of the first accommodating cavity (111a) to block the air outlet (112b) from the outside; Along the direction from the air outlet (112b) to the air inlet (112a), the cross-sectional area of ​​the first accommodating cavity (111a) gradually increases.

2. The pressure limiting valve according to claim 1, characterized in that: The first accommodating cavity (111a) is a cone, and the first end (112c) is a spherical shape.

3. The pressure limiting valve according to claim 1, characterized in that: The cross-sectional area of ​​the first end (112c) is greater than the cross-sectional area of ​​the exhaust pipe (112).

4. The pressure limiting valve according to claim 1, characterized in that: The pressure-limiting valve (11) further comprises a limiting member (113), wherein the limiting member (113) is fixedly connected to the valve body (111), and the limiting member (113) is used to limit the first end (112c) from leaving the first accommodating chamber (111a).

5. The pressure limiting valve according to claim 4, characterized in that: The limiting member (113) comprises a limiting portion (113a) and a mounting portion (113b), wherein the mounting portion (113b) is mounted on the valve body (111), and the limiting portion (113a) has a mounting hole (113c), and the exhaust pipe (112) passes through the mounting hole (113c); The cross-sectional area of ​​the first end (112c) is larger than the cross-sectional area of ​​the mounting hole (113c), and the cross-sectional area of ​​the exhaust pipe (112) is smaller than the cross-sectional area of ​​the mounting hole (113c).

6. The pressure limiting valve according to claim 5, characterized in that: The inner wall of the valve body (111) is provided with a slot (111b), the slot (111b) is located on a side of the first accommodating cavity (111a) facing the air inlet (112a), and the mounting portion (113b) is snap-connected to the slot (111b).

7. The pressure limiting valve according to any one of claims 4 to 6, characterized in that: The limiting member (113) is a retaining spring sleeved on the exhaust pipe (112).

8. The pressure limiting valve according to any one of claims 1 to 6, 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 accommodating chamber (111a) is arranged in the second valve body (111d).

9. The pressure limiting valve according to claim 8, characterized in that: Along the height direction of the pressure-limiting valve (11), there is a gap (114) between the first valve body (111c) and the second valve body (111d); The second valve body (111d) has a step portion (111e), and the bottom wall of the first valve body (111c) abuts against the step portion (111e).

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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