Container cover and cooking container

Abstract

The utility model discloses a container cover and a cooking container, the container cover comprises a cover body and an opening stopping valve, the cover body is provided with a mounting hole, the opening stopping valve comprises a valve body and a first sealing piece, the first sealing piece is connected to the outer wall of the valve body in a sleeving mode, the valve body is movably mounted in the mounting hole, and a first exhaust channel is formed between the valve body and the side wall of the mounting hole; the valve body can move in the height direction of the container cover relative to the cover body, so that the container cover at least has a first working state and a second working state. In the first working state, the first sealing piece is in sealing fit with the inner wall of the cover body to block the first exhaust channel, so that the cooking container is in a sealed state, and food can be cooked quickly and conveniently; and in the second working state, the sealing fit between the first sealing piece and the inner wall of the cover body is relieved, so that the first exhaust channel is opened, the cooking container is in the exhaust state, cold air is conveniently exhausted in the initial heating stage, the cooking efficiency is improved, the internal and external pressure difference is conveniently balanced in the cooking process, and the safety of the container cover in the cooking process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to a container cover and a cooking container. Background Art

[0002] A cooking container includes a lid and a body. When the lid and body are mated, the container is sealed. This allows the water in the container to reach a higher temperature without boiling, utilizing the principle that air pressure increases the boiling point of liquids, thereby accelerating cooking efficiency. When the cooking container is initially heated, some cold air remains inside, making it difficult for the container to heat up quickly, thus affecting cooking efficiency. Utility Model Content

[0003] In view of this, the present application provides a container cover and a cooking container to solve the technical problem in the prior art that the cooking container cannot be heated up quickly in the initial stage of heating.

[0004] The present application provides a container lid, which includes a lid body and a check valve, the lid body having a mounting hole, the check valve including a valve body and a first sealing member, the first sealing member being sleeved on the outer wall of the valve body, the valve body being movably mounted in the mounting hole, and having a first exhaust channel between the valve body and the side wall of the mounting hole, and the valve body being able to move relative to the lid body along the height direction of the container lid, so that the container lid has at least a first working state and a second working state.

[0005] In the first working state, the first sealing member seals with the inner wall of the cover body to block the first exhaust channel. In the second working state, the first sealing member releases the sealing cooperation with the inner wall of the cover body to open the first exhaust channel.

[0006] In an embodiment of the present application, the stop valve is installed on the cover body of the container lid through the mounting hole, and a first exhaust channel for connecting the container body and the external environment is provided between the valve body of the stop valve and the mounting hole of the cover body. During the movement of the valve body relative to the cover body along the height direction of the container lid, the container lid can be placed in a first working state or a second working state to meet the different needs of the container body in different cooking stages, which is conducive to improving the user experience.

[0007] When the container is in the initial stage of heating or in the cooling period after heating is completed, the container lid is in a second operating state. In this second operating state, the valve body moves downwardly along the height direction of the container lid under the action of gravity, driving the first sealing member to move downward, thereby opening the first exhaust passage, thereby allowing the interior of the container to communicate with the external environment through the first exhaust passage. In this operating state, due to the opening of the first exhaust passage, the cooking container is in a venting state. This not only facilitates the discharge of cold air from the container to the external environment through the first exhaust passage during the initial stage of heating, thereby improving cooking efficiency, but also facilitates the equalization of pressure differences between the inside and outside of the container through the first exhaust passage during the cooling period, thereby making it easier for the user to remove the container lid.

[0008] When the container body is continuously heated, causing the steam inside the container body to increase and its pressure to rise, the container lid enters a first operating state. In this first operating state, the steam acts on the valve body, causing the valve body to overcome the force of gravity and move upward along the height of the container lid. This in turn drives the first sealing member to move upward, thereby blocking the first exhaust passage. This prevents the interior of the container body from communicating with the outside environment through the first exhaust passage. In this operating state, the closure of the first exhaust passage seals the cooking container, facilitating rapid cooking of food.

[0009] Therefore, when the container lid is in the second working state and the first exhaust channel is open, the interior of the container body and the external environment can be connected, thereby balancing the pressure difference between the inside and outside of the container body, reducing the risk of negative pressure caused by the internal pressure of the container body being lower than the external environmental pressure, allowing the user to easily lift the container lid, improving the safety of the user when lifting the container lid, and reducing the risk of damage to the container lid due to excessive negative pressure inside the container body, thereby increasing the service life of the container lid. When the container lid is in the first working state and the first exhaust channel is closed, the container body can be sealed, so that positive pressure can be generated inside the container body, improving cooking efficiency, thereby meeting the user's usage needs and improving the user experience.

[0010] In a possible embodiment, an exhaust groove is provided on the outer wall of the valve body. Along the height direction of the container cover, the exhaust groove is located on the side of the first sealing member facing the cover body. The gap between the exhaust groove and the side wall of the mounting hole forms the first exhaust channel. During the movement of the valve body along the mounting hole, the first sealing member can be sealed with the cover body to block the first exhaust channel.

[0011] In this embodiment of the present application, the venting groove is located on the side of the first sealing member facing the lid, and the gap between the venting groove and the sidewall of the mounting hole forms the aforementioned first venting channel. Providing the venting groove on the outer wall of the valve body facilitates processing while also reducing the overall weight of the valve body, making it more easily pushed by the steam inside the container, thereby improving the reliability of the container lid during cooking.

[0012] When the check valve moves under the drive of steam until the first sealing member abuts the inner wall of the lid body, at least part of the exhaust groove extends to the outside of the container body, and the first sealing member can seal the mounting hole of the lid body to close the first exhaust channel. At this time, the container lid is in the first working state, which is conducive to shortening cooking time and improving cooking efficiency.

[0013] When the check valve moves under the action of gravity until the first sealing member is separated from the inner wall of the lid body, at least a portion of the exhaust groove extends into the interior of the container body, and the first sealing member can unblock the mounting hole of the lid body to open the first exhaust channel. At this time, the container lid is in the second working state, and the pressure difference between the inside and outside of the container body gradually balances, so that the user can easily pick up the container lid, thereby improving the safety of the user when picking up the container lid.

[0014] In a possible implementation manner, the exhaust groove is a T-shaped structure, and the outer wall of the valve body is provided with a plurality of the exhaust grooves spaced apart along the circumferential direction.

[0015] In the embodiment of the present application, the cross-section of the exhaust groove along the height of the container lid is T-shaped. This allows the first exhaust passage formed by the exhaust groove and the sidewall of the mounting hole to have a larger flow area, thereby improving the exhaust efficiency of the cooking container. Furthermore, the T-shaped exhaust groove facilitates machining, reducing the machining difficulty and thereby improving the production efficiency of the valve body.

[0016] In one possible embodiment, the valve body has a valve cavity, and the valve body is also provided with a second exhaust channel connected to the valve cavity; the check valve also includes a valve core, and an opening is provided at one end of the valve cavity along the height direction of the container cover, and the valve core can move along the height direction of the container cover to block or open the opening; the container cover also has a third working state, in which the valve core can open the opening to open the second exhaust channel; in the first working state and the second working state, the valve core can block the opening to block the second exhaust channel.

[0017] In an embodiment of the present application, during operation of the check valve, the second exhaust channel always connects the valve cavity and the external environment, that is, the second exhaust channel is always in an open state. Furthermore, during cooking in the cooking container, the valve core can move relative to the valve body along the height direction of the container lid, so that the container lid also has a third operating state. Specifically, when the container body continues to be heated, causing excessive steam and excessive pressure inside the container body, the container lid enters the third operating state. The valve body continues to move upward along the height direction of the container lid under the action of the steam, and drives the first sealing member to move upward, thereby blocking the first exhaust channel, thereby preventing the interior of the container body from communicating with the external environment through the first exhaust channel. Furthermore, in the third operating state, due to the opening of the second exhaust channel, the cooking container is in an exhaust state, so as to balance the internal and external pressure differences while the container body continues to be heated, which is beneficial for improving cooking efficiency while enhancing safety during the cooking process.

[0018] Therefore, when the container body continues to be heated until the steam inside the container body is excessive and the pressure is too high, the valve core can open the opening of the valve cavity to switch the container lid to the third working state, so that the interior of the container body, the valve cavity and the second exhaust channel are interconnected, so that the steam inside the container body can be discharged to the external environment, which is beneficial to improve cooking efficiency while improving user safety.

[0019] In a possible embodiment, along the height direction of the container lid, the valve body includes a first section, a second section and a third section, the third section is located between the first section and the second section, and the outer diameter of the third section is larger than the outer diameter of the first section and the outer diameter of the second section.

[0020] The outer wall of the valve body is provided with an exhaust groove, at least part of the structure of the exhaust groove is provided in the first section, the second exhaust channel is provided in the third section, the first sealing member is sleeved on the first section, and the cover body is also connected to a handle assembly, the handle assembly includes a handle body and a push plate, the handle body has a through hole, and at least part of the second section is located in the through hole.

[0021] In the first working state, at least part of the second section extends out of the through hole, and the third section is engaged with the push plate; in the second working state, at least part of the second section retracts into the through hole, and the third section is released from the push plate.

[0022] In the embodiment of the present application, when the outer wall of the third section abuts the outer wall of the lid, the lid can restrict the downward movement of the valve body along the height direction of the container lid. When the first sealing member abuts the inner wall of the lid, the lid can restrict the upward movement of the valve body along the height direction of the container lid. Thus, the third section and the first sealing member can restrict the movement of the valve body within the mounting hole along the height direction of the container lid, thereby reducing the possibility of separation between the valve body and the lid, thereby improving the stability and reliability of the connection between the two. Therefore, by setting the outer diameter of the third section of the valve body in this embodiment to be larger than the outer diameter of the first section, the third section can always be located on the side of the lid facing away from the container body, thereby ensuring that the second exhaust channel provided in the third section can always be open, so as to connect the interior of the container body with the external environment in the event of excessive steam or excessive pressure inside the container. This not only improves safety during cooking, but also reduces the possibility of the second exhaust channel being blocked by splashing food, thereby ensuring the cleanliness of the interior of the second exhaust channel.

[0023] At the same time, when the pressure inside the container increases, the valve body is driven to move upward along the height of the container lid, causing at least a portion of the second section of the valve body to extend out of the through-hole and causing the third section of the valve body to engage the push plate. At this point, the push plate is constrained by the third section and cannot move radially along the container lid. This prevents the user from opening the cooking container by actuating the handle assembly while the check valve is in the raised position, thereby improving user safety during the cooking process.

[0024] In a possible embodiment, a protrusion is further provided on the side wall of the valve cavity, and the check valve further includes an elastic member located in the valve cavity, with both ends of the elastic member respectively connected to the valve core and the protrusion.

[0025] In the embodiment of the present application, the two ends of the elastic member are respectively connected to the valve core and the protrusion, and are used to drive the valve core to reset after the pressure of the cooking container is released, so that the container cover can be switched from the third working state to the first working state, reducing the possibility that the container cover cannot be in a sealed state due to the valve core being stuck in the valve cavity, and improving the reliability of the check valve during operation.

[0026] In a possible embodiment, the elastic member includes a main body and at least two bent portions connected to the main body, the bent portions are bent relative to the main body, the main body is connected to the protrusion, and the bent portions are connected to the valve core; the angle between the bent portions and the main body can be changed to cause the elastic member to deform elastically.

[0027] In an embodiment of the present application, one end of the elastic member is connected to the protrusion through the main body so as to provide support to the supporting elastic member during the upward movement of the valve core along the height direction of the container cover, thereby improving the stability and reliability of the connection between the elastic member and the valve cavity; the other end of the elastic member is connected to the valve core through the bent portion so as to limit the upward movement of the valve core along the height direction of the container cover through the angle between the bent portion and the main body. At the same time, after the pressure relief of the cooking container is completed, the valve core is driven to reset through the angle between the bent portion and the main body to realize the switching of the container cover from the third working state to the first working state.

[0028] In a possible implementation manner, the elastic member is a spring, or the elastic member includes at least two connected clips.

[0029] In the embodiment of the present application, when the elastic member is a spring or a retaining spring, it can not only reduce the production cost of the check valve, but also improve the stability and reliability of the valve core during movement. When the elastic member is a spring, the valve core can be a spherical structure, so that when the two are combined, the elastic member can apply a uniform elastic force to the valve core, and in the event of failure of the elastic member, the valve core of the spherical structure can also automatically reset under the action of gravity. At the same time, it can also reduce the possibility of the valve core deviating during movement, resulting in the opening of the valve cavity being unable to be sealed, which is beneficial to improving the reliability of the check valve during operation. Alternatively, when the elastic member is at least two connected retaining springs, the valve core can also be a spherical structure to ensure that the valve core can be subjected to a uniform elastic force.

[0030] In a possible implementation manner, the surface of the valve core used for abutting against the side wall of the opening is arc-shaped or circular.

[0031] In the embodiment of the present application, the arc-shaped or circular surface is not only easy to process, but also can serve as a guide for the resetting of the valve core, so as to improve the stability of the fit between the valve core and the opening of the valve cavity. At the same time, it can also reduce the possibility of the valve core being offset during movement, resulting in the opening of the valve cavity being unable to be sealed, which is beneficial to improving the sealing effect of the valve core on the opening of the valve cavity, thereby improving the sealing performance of the container cover in the first working state.

[0032] In a possible embodiment, the valve core includes a main body, a matching part and a limiting part. Along the height direction of the container lid, the matching part is located between the main body and the limiting part, and the main body is located on the side of the matching part facing the opening. There is a gap between the main body and the side wall of the opening, and the elastic part is connected to the side of the limiting part away from the main body; the stop valve also includes a second sealing part, which is sleeved on the matching part, and the second sealing part is used to abut against the side wall of the opening, and the main body and the limiting part are used to abut against the second sealing part.

[0033] In this embodiment of the present application, the main body of the valve core has a flow surface, and a gap is defined between the flow surface and the sidewalls of the valve cavity opening. When the container lid is in the third operating state, steam from the container body flows into the valve cavity through the gap between the flow surface and the sidewalls of the valve cavity opening, then flows through the valve cavity into the second exhaust channel, and finally flows out to the outside environment through the second exhaust channel. The cross-section of the flow surface along the height of the container lid is a planar structure, which creates a large flow area between the flow surface and the sidewalls of the valve cavity opening, thereby improving the exhaust efficiency of the cooking container.

[0034] The valve core also includes a limiting portion, which is connected to the side of the matching portion facing away from the main body portion. One end of the elastic member can be matched with the limiting portion so that when the valve core moves relative to the valve cavity along the height direction of the container cover, the limiting portion limits the direction of elastic deformation of the elastic member to improve the reliability of the elastic member during operation.

[0035] The check valve also includes a second sealing member, which is sleeved on the mating portion. The second sealing member is used to abut against the side wall of the opening of the valve cavity, and the main body and the limiting portion are used to abut against the second sealing member. During the process of the valve core and the opening of the valve cavity being mated, the valve core can block the opening of the valve cavity through the second sealing member, thereby improving the sealing effect of the valve core on the valve cavity opening, which is beneficial to improving the sealing performance of the container lid in a sealed state, thereby quickly cooking food. When the second sealing member is sleeved on the mating portion, one end of the second sealing member abuts against the limiting portion and the other end of the second sealing member abuts against the main body along the height direction of the container lid, so that the main body and the limiting portion can clamp the second sealing member along the height direction of the container lid, thereby improving the stability and reliability of the connection between the second sealing member and the mating portion, reducing the possibility of the second sealing member falling off the valve core, and ensuring the sealing effect of the valve core on the valve cavity opening.

[0036] The present application also provides a cooking container, which includes a container body and a container cover. The container cover is any one of the container covers described above, wherein the container cover is fitted onto the container body.

[0037] In an embodiment of the present application, when the container lid is closed on the container body, the cooking container has at least three operating states during the cooking process to meet the different needs of the cooking container at different cooking stages, thereby improving the user experience. Therefore, during the cooking process, when the container lid is in the second operating state, with the first exhaust channel open, it can connect the interior of the container body with the external environment, thereby balancing the pressure difference between the inside and outside of the container body, making it easy for the user to lift the container lid and improving safety when lifting the container lid. When the container lid is in the first operating state, with the first exhaust channel closed, it can seal the container body, generating a positive pressure inside the container body, improving cooking efficiency, thereby meeting the user's needs and enhancing the user experience. When the container lid is in the third operating state, with the second exhaust channel open, it can connect the container body with the external environment when food is boiling, reducing the pressure inside the container body and improving safety during the cooking process.

[0038] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 any creative work.

[0040] Figure 1 A cross-sectional view of a cooking container provided by the present application in a specific embodiment;

[0041] Figure 2 A cross-sectional view of the container cover provided in the present application in a second working state;

[0042] Figure 3 A cross-sectional view of the container cover provided in the present application in a first working state;

[0043] Figure 4 A cross-sectional view of the container cover provided in this application in a third working state;

[0044] Figure 5 A cross-sectional view of the check valve provided in the present application in a second specific embodiment in a sealed state;

[0045] Figure 6 A cross-sectional view of the check valve provided in the present application in a third specific embodiment in a sealed state;

[0046] Figure 7 A schematic structural diagram of a check valve provided in this application in a specific embodiment;

[0047] Figure 8 A schematic structural diagram of a valve body provided in this application in a specific embodiment;

[0048] Figure 9 for Figure 8 sectional view of

[0049] Figure 10 A schematic structural diagram of a first sealing member provided in this application in a specific embodiment;

[0050] Figure 11 for Figure 10 sectional view of

[0051] Figure 12 A schematic structural diagram of a valve cap provided in this application in a specific embodiment;

[0052] Figure 13 for Figure 12 sectional view of

[0053] Figure 14 A schematic structural diagram of a valve core provided in this application in a specific embodiment;

[0054] Figure 15 A schematic structural diagram of the valve core assembly provided in this application in a first specific embodiment;

[0055] Figure 16 A schematic structural diagram of the valve core assembly provided in this application in a second specific embodiment;

[0056] Figure 17 This is a schematic structural diagram of the valve core assembly provided in this application in the third specific embodiment.

[0057] Description of reference numerals:

[0058] 1-cover;

[0059] 11-Mounting hole;

[0060] 2-Check valve;

[0061] 21-valve body;

[0062] 211- first paragraph;

[0063] 211a-exhaust slot;

[0064] 211b-installation slot;

[0065] 212-Second paragraph;

[0066] 213- third paragraph;

[0067] 213a-second exhaust channel;

[0068] 214-valve chamber;

[0069] 214a-protrusion;

[0070] 22-first sealing member;

[0071] 221-first extension;

[0072] 222- second extension;

[0073] 223-Ontology part;

[0074] 23-valve core;

[0075] 231-main body;

[0076] 231a-flow surface;

[0077] 231b-guide surface;

[0078] 232-cooperation part;

[0079] 233-limiting part;

[0080] 24- elastic member;

[0081] 241-Ontology;

[0082] 242-bending portion;

[0083] 25- second sealing member;

[0084] 26-valve bonnet;

[0085] 261-first step;

[0086] 262- second step;

[0087] 263-support part;

[0088] 3- first exhaust channel;

[0089] 4-container body;

[0090] 5-handle assembly;

[0091] 51- handle body;

[0092] 511-through hole;

[0093] 52-Push plate.

[0094] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0095] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0096] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0097] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0098] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0099] The embodiment of the present application provides a container cover, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, the container cover includes a cover body 1 and a check valve 2, the cover body 1 has a mounting hole 11, the check valve 2 includes a valve body 21 and a first sealing member 22, the first sealing member 22 is sleeved on the outer wall of the valve body 21, and the check valve 2 is movably mounted on the mounting hole 11 through the valve body 21, and can move relative to the cover body 1 along the height direction of the container cover, so that the container cover has at least a first working state and a second working state.

[0100] Among them, there is a first exhaust channel 3 between the valve body 21 and the side wall of the mounting hole 11. In the first working state, the first sealing member 22 is sealed with the inner wall of the cover body 1 to block the first exhaust channel 3. In the second working state, the first sealing member 22 is released from the sealing cooperation with the inner wall of the cover body 1 to open the first exhaust channel 3.

[0101] In an embodiment of the present application, a container lid is used for a cooking container, comprising a container lid and a container body 4. A check valve 2 is mounted on the cover body 1 of the container lid through a mounting hole 11. A first exhaust passage 3 is defined between the valve body 21 of the check valve 2 and the mounting hole 11 of the cover body 1, for communicating the container body 4 with the external environment. Movement of the valve body 21 relative to the cover body 1 along the height direction of the container lid allows the container lid to be placed in either a first operating state or a second operating state.

[0102] Specifically, when the first sealing member 22 of the non-opening valve 2 is sealed with the inner wall of the cover body 1, the interior of the container body 4 cannot be communicated with the external environment through the first exhaust channel 3, and the container cover is in the first working state at this time; when the first sealing member 22 of the non-opening valve 2 is released from the sealing cooperation with the inner wall of the cover body 1, the interior of the container body 4 can be communicated with the external environment through the first exhaust channel 3, and the container cover is in the second working state.

[0103] Therefore, the container cover in this embodiment can have different working states through the non-opening valve 2 to meet the different needs of the container body 4 in different cooking stages, which is conducive to improving the user experience.

[0104] When the container body 4 is continuously heated so that the steam inside the container body 4 increases and the pressure increases, the container cover is in the state of Figure 3 In the first operating state shown, steam acts on valve body 21, causing it to overcome gravity and move upward along the height of the container lid. This in turn drives first sealing member 22 upward, thereby blocking first exhaust passage 3. This prevents the interior of container body 4 from communicating with the outside world through first exhaust passage 3. At this point, the container lid is in the first operating state. In this state, the closure of first exhaust passage 3 seals the cooking container, facilitating rapid cooking of food.

[0105] At the same time, when the container body 4 is in the initial stage of heating and the cooling period after heating is completed, the container cover is in the state of Figure 2 In the second working state shown, the valve body 21 moves downwardly along the height direction of the container lid under the action of gravity, and drives the first sealing member 22 to move downward, thereby opening the first exhaust passage 3, thereby allowing the interior of the container body 4 to communicate with the external environment through the first exhaust passage 3. At this time, the container lid is in the second working state. In this working state, due to the opening of the first exhaust passage 3, the cooking container is in a venting state. This not only facilitates the discharge of cold air from the interior of the container body 4 to the external environment through the first exhaust passage 3 during the initial heating period of the container body 4, thereby improving cooking efficiency, but also facilitates the equalization of the pressure difference between the inside and outside of the container body 4 through the first exhaust passage 3 when the container body 4 is in the cooling period, thereby making it easier for the user to remove the container lid.

[0106] It should be noted that the container body 4 is in the initial heating period when the heating device heats the container body 4 but has not yet heated it to a boiling state, and the container body 4 is in the cooling period after the heating is completed when the cooking is completed and the heating device is turned off and the container body is cooled.

[0107] Therefore, when the container lid is in the second working state and the first exhaust passage 3 is open, the interior of the container body 4 and the external environment can be connected, thereby balancing the pressure difference between the inside and outside of the container body 4, reducing the risk of negative pressure caused by the internal pressure of the container body 4 being lower than the external environmental pressure, allowing the user to easily pick up the container lid, improving the safety of the user when picking up the container lid, and reducing the risk of damage to the container lid due to excessive negative pressure inside the container body 4, thereby increasing the service life of the container lid. When the container lid is in the first working state and the first exhaust passage 3 is closed, the container body 4 can be sealed, so that positive pressure can be generated inside the container body 4, improving cooking efficiency, thereby meeting the user's usage needs and improving the user experience.

[0108] In a specific embodiment, Figure 2 、 Figure 3 and Figure 7 As shown, the outer wall of the valve body 21 is provided with an exhaust groove 211a. Along the height direction of the container cover, the exhaust groove 211a is located on the side of the first sealing member 22 facing the cover body 1. The gap between the exhaust groove 211a and the side wall of the mounting hole 11 forms a first exhaust channel 3, and in the process of the valve body 21 moving along the mounting hole 11, the first sealing member 22 can be sealed with the cover body 1 to block the first exhaust channel 3.

[0109] In the embodiment of the present application, the exhaust groove 211a is located on the side of the first sealing member 22 facing the lid body 1, and the gap between the exhaust groove 211a and the side wall of the mounting hole 11 can form the first exhaust channel 3. The exhaust groove 211a is provided on the outer wall of the valve body 21, which not only facilitates processing but also reduces the overall weight of the valve body 21, making it easier for the valve body 21 to be pushed by the steam inside the container body 4, thereby improving the reliability of the container lid during cooking.

[0110] Specifically, during the cooking process of the cooking container, the pressure inside the container body 4 gradually increases and the steam gradually increases, so that the steam inside the container body 4 can drive the valve body 21 to move upward along the height direction of the container cover, and drive the first sealing member 22 sleeved on the outer wall of the valve body 21 to move synchronously.

[0111] When the steam-driven check valve 2 moves until the first sealing member 22 abuts the inner wall of the lid 1, at least a portion of the exhaust groove 211a extends outside the container body 4. The first sealing member 22 can block the mounting hole 11 of the lid 1, thereby closing the first exhaust passage 3. At this point, the container lid is in a first operating state. When the container lid is in the first operating state, the interior of the container body 4 cannot communicate with the outside environment through the gap between the exhaust groove 211a and the sidewall of the mounting hole 11, thereby maintaining a sealed state of the cooking container. This allows positive pressure to be generated inside the container body 4, which helps shorten cooking time and improve cooking efficiency.

[0112] When the check valve 2 moves under the action of gravity until the first sealing member 22 separates from the inner wall of the lid 1, at least a portion of the exhaust groove 211a extends into the interior of the container body 4, and the first sealing member 22 is able to unblock the mounting hole 11 of the lid 1, thereby opening the first exhaust passage 3. At this point, the container lid is in the second operating state. When the container lid is in the second operating state, the interior of the container body 4 can communicate with the external environment through the gap between the exhaust groove 211a and the side wall of the mounting hole 11, placing the cooking container in a venting state. This gradually balances the pressure difference between the inside and outside of the container body 4, allowing the user to easily lift the container lid, thereby improving safety when lifting the container lid.

[0113] In one possible implementation, Figure 8 and Figure 9 As shown, the outer wall of the valve body 21 is further provided with a mounting groove 211b, and the first sealing member 22 is sleeved on the outer wall of the valve body 21 through the mounting groove 211b, and along the height direction of the container cover, the first sealing member 22 abuts against the side wall of at least one side of the mounting groove 211b, so that the side wall of the mounting groove 211b can support and limit the first sealing member 22, so as to improve the installation reliability of the first sealing member 22 while limiting the movement of the first sealing member 22 relative to the valve body 21 along the height direction of the container cover, thereby reducing the possibility of the first sealing member 22 falling off the valve body 21.

[0114] Preferably, along the height direction of the container cover, when the first seal 22 is sleeved in the mounting groove 211b, the first seal 22 can be interference fit with the mounting groove 211b, so that both side walls of the mounting groove 211b can press against the first seal 22, thereby further improving the installation reliability of the first seal 22.

[0115] In one possible implementation, Figure 10 and Figure 11 As shown, the first sealing member 22 includes a main body portion 223 and a first extension portion 221 and a second extension portion 222 connected to the main body portion 223. Along the height direction of the container cover, the first extension portion 221 and the second extension portion 222 are located on both sides of the main body portion 223 and are inclined relative to the main body portion 223. The inclination directions of the first extension portion 221 and the second extension portion 222 are opposite, wherein the main body portion 223 is sleeved on the outer wall of the valve body 21 through the mounting groove 221b.

[0116] Along the height direction of the container cover, the upper surface and the lower surface of the main body 223 can both be flat. When the first seal 22 is connected to the mounting groove 221b through the main body 223, the main body 223 can be in surface contact with the side wall of the mounting groove 221b, so that there is a larger contact area between the two, which is beneficial to improve the supporting effect of the side wall of the mounting groove 221b on the first seal 22, and improve the installation reliability of the first seal 22.

[0117] The first extending portion 221 extends relative to the main body portion 223 toward the direction close to the cover 1 , and the second extending portion 222 extends relative to the main body portion 223 toward the direction close to the valve cap 26 .

[0118] Specifically, the first extension portion 221 and the second extension portion 222 are both inclined relative to the main body portion 223, and in the height direction of the pressure container cover, the inclination directions of the first extension portion 221 and the second extension portion 222 are opposite, so that the two can be symmetrically arranged relative to the main body portion 223. Therefore, during the assembly of the first sealing member 22 and the valve body 21, there is no need to identify the placement position of the first sealing member 22, which is conducive to improving the assembly efficiency between the two and improving the production efficiency of the check valve 2.

[0119] In a specific embodiment, Figure 8 and Figure 9 As shown, the exhaust groove 211 a is a T-shaped structure, and the outer wall of the valve body 21 is provided with a plurality of exhaust grooves 211 a distributed at intervals along the circumferential direction.

[0120] In this embodiment of the present application, the cross-section of the exhaust groove 211a along the height of the container lid is T-shaped. This allows the first exhaust passage 3 formed by the exhaust groove 211a and the sidewall of the mounting hole 11 to have a larger flow area, thereby improving the exhaust efficiency of the cooking container. Furthermore, the T-shaped exhaust groove 211a facilitates machining, reducing the difficulty of machining the exhaust groove 211a and thereby improving the production efficiency of the valve body 21.

[0121] Specifically, the outer wall of the valve body 21 is provided with a plurality of exhaust grooves 211a spaced apart along the circumference of the container cover, which is beneficial to improving the exhaust efficiency of the cooking container, so that the container body 4 can quickly discharge the cold air inside it to the external environment in the initial stage of heating, and can also quickly balance the internal and external pressure differences during the cooling period.

[0122] In a possible embodiment, along the radial direction of the container cover, the exhaust groove 211 a may also be recessed inward relative to the outer surface of the valve body 21 to further increase the flow area of the first exhaust channel 3 .

[0123] In a specific embodiment, Figure 8 and Figure 9As shown, the valve body 21 has a valve cavity 214, and the valve body 21 is also provided with a second exhaust channel 213a communicating with the valve cavity 214. Figure 2 and Figure 3 As shown, the check valve 2 also includes a valve core 23. An opening (not shown) is provided at one end of the valve cavity 214 along the height direction of the container cover. The valve core 23 can move along the height direction of the container cover to block or open the opening of the valve cavity 214.

[0124] Among them, Figure 4 As shown, the container cover also has a third working state. In the third working state, the valve core 23 can open the opening of the valve cavity 214 to open the second exhaust channel 213a; in the first working state and the second working state, the valve core 23 can block the opening of the valve cavity 214 to block the second exhaust channel 213a.

[0125] In the embodiment of the present application, during the operation of the check valve 2, the second exhaust channel 213a is always connected to the valve chamber 214 and the external environment, that is, the second exhaust channel 213a is always in an open state.

[0126] Specifically, during the cooking process of the cooking container, the valve core 23 can move relative to the valve body 21 along the height direction of the container cover, so that the container cover also has a third working state.

[0127] When the container body 4 is in the initial stage of heating, the container cover is in the state as shown in FIG. Figure 2 The second operating state is shown. In the second operating state, the valve body 21 moves downwardly along the height of the container lid under the action of gravity, driving the first sealing member 22 downwardly, thereby opening the first exhaust passage 3 and allowing the interior of the container body 4 to communicate with the outside environment through the first exhaust passage 3. At this time, the valve core 23 also moves downwardly along the height of the container lid under the action of gravity and abuts against the opening of the valve cavity 214, thereby blocking the opening of the valve cavity 214 and preventing the interior of the container body 4 from communicating with the outside environment through the valve cavity 214 and the second exhaust passage 213a. In the second operating state, the opening of the first exhaust passage 3 places the cooking container in an exhaust state. This allows cold air inside the container body 4 to be discharged to the outside environment through the first exhaust passage 3 during the initial heating phase of the cooking container, thereby improving the cooking efficiency of the cooking container.

[0128] When the container body 4 is continuously heated so that the steam inside the container body 4 increases and the pressure increases, the container cover is in a state as shown in FIG. Figure 3The first operating state is shown. In the first operating state, the valve body 21 moves upward along the height of the container lid under the action of steam, driving the first sealing member 22 upward, thereby blocking the first exhaust passage 3 and preventing the interior of the container body 4 from communicating with the outside environment through the first exhaust passage 3. At this time, the valve core 23 continues to move downward along the height of the container lid under the action of gravity and abuts against the opening of the valve cavity 214, thereby blocking the opening of the valve cavity 214 and preventing the interior of the container body 4 from communicating with the outside environment through the valve cavity 214 and the second exhaust passage 213a. Furthermore, in the first operating state, the closure of the first exhaust passage 3 and the second exhaust passage 213a maintains a sealed state, thereby generating positive pressure during the continuous heating of the container body 4, which helps improve the cooking efficiency of the cooking container.

[0129] When the container body 4 is continuously heated so that the steam inside the container body 4 is excessive and the pressure is too high, the container cover is in a state as shown in FIG. Figure 4 The third operating state is shown. In the third operating state, the valve body 21 continues to move upward along the height of the container lid under the action of steam, driving the first sealing member 22 upward, thereby blocking the first exhaust passage 3 and preventing the interior of the container body 4 from communicating with the outside environment through the first exhaust passage 3. At this time, the valve core 23 also moves upward along the height of the container lid under the action of steam and separates from the opening of the valve cavity 214, thereby opening the opening of the valve cavity 214 and allowing the interior of the container body 4 to communicate with the outside environment through the valve cavity 214 and the second exhaust passage 213a. In the third operating state, the opening of the second exhaust passage 213a causes the cooking container to be in an exhaust state, thereby balancing the internal and external pressure differential while the container body 4 continues to heat, which helps improve cooking efficiency and safety.

[0130] When the container body 4 is in the cooling period after the heating is completed, the container cover is in the Figure 2The second operating state is shown. In the second operating state, the valve body 21 moves downward along the height of the container lid under the action of gravity, driving the first sealing member 22 downward, thereby reopening the first exhaust passage 3 and allowing the interior of the container body 4 to communicate with the outside environment through the first exhaust passage 3. At this time, the valve core 23 also moves downward along the height of the container lid under the action of gravity and abuts against the opening of the valve cavity 214, thereby again blocking the opening of the valve cavity 214 and preventing the interior of the container body 4 from communicating with the outside environment through the valve cavity 214 and the second exhaust passage 213a. In the second operating state, the opening of the first exhaust passage 3 places the cooking container in an exhaust state. This allows steam inside the container body 4 to be discharged to the outside environment through the first exhaust passage 3 when the container body 4 is in a cold storage period, thereby improving the heat dissipation efficiency and safety of the cooking container.

[0131] Therefore, when the container body 4 continues to be heated until the steam inside the container body 4 is excessive and the pressure is too high, the valve core 23 can open the opening of the valve cavity 214 to switch the container cover to the third working state, so that the interior of the container body 4, the valve cavity 214 and the second exhaust channel 213a are interconnected, so that the steam inside the container body 4 can be discharged to the external environment, which is beneficial to improve cooking efficiency while improving user safety.

[0132] In a specific embodiment, Figure 1 、 Figure 8 and Figure 9 As shown, along the height direction of the container cover, the valve body 21 includes a first section 211, a second section 212 and a third section 213, the third section 213 is located between the first section 211 and the second section 212, and the outer diameter of the third section 213 is larger than the outer diameter of the first section 211 and the outer diameter of the second section 212.

[0133] In the embodiment of the present application, the first section 211 of the valve body 21 is located within the mounting hole 11 of the lid body 1, and the first sealing member 22 is sleeved onto the side of the first section 211 that is closest to the container body 4. Along the height direction of the container lid, as the valve body 21 moves relative to the lid body 1, the outer wall of the third section 213 can abut or release the abutment against the outer wall of the lid body 1, thereby placing the container lid in the second operating mode or the first operating mode.

[0134] Specifically, at least a portion of the exhaust groove 211 a is disposed in the first section 211 , the first sealing member 22 is sleeved on the first section 211 , and the second exhaust channel 213 a is disposed in the third section 213 .

[0135] When the outer wall of the third section 213 abuts against the outer wall of the cover body 1, the second exhaust channel 213a connects the valve chamber 214 and the external environment, and the first sealing member 22 can be separated from the inner wall of the cover body 1, thereby opening the first exhaust channel 3, so that the interior of the container body 4 can be connected with the external environment through the first exhaust channel 3, thereby making the container cover in the second working state.

[0136] When the outer wall of the third section 213 is separated from the outer wall of the cover body 1, the second exhaust channel 213a connects the valve cavity 214 and the external environment, and the first sealing member 22 can abut against the inner wall of the cover body 1, thereby blocking the first exhaust channel 3, so that the interior of the container body 4 cannot be connected with the external environment through the first exhaust channel 3, thereby making the container cover in the first working state.

[0137] Among them, when the outer wall of the third section 213 abuts against the outer wall of the cover body 1, the cover body 1 can limit the downward movement of the valve body 21 along the height direction of the container cover, and when the first sealing member 22 abuts against the inner wall of the cover body 1, the cover body 1 can limit the upward movement of the valve body 21 along the height direction of the container cover, thereby limiting the movement of the valve body 21 in the mounting hole 11 along the height direction of the container cover through the third section 213 and the first sealing member 22, so as to reduce the possibility of the valve body 21 and the cover body 1 detaching from each other, which is conducive to improving the stability and reliability of the connection between the two.

[0138] Therefore, the valve body 21 in this embodiment sets the outer diameter of the third section 213 to be larger than the outer diameter of the first section 211, so that the third section 213 can always be located on the side of the cover body 1 away from the container body 4, so that the second exhaust channel 213a set in the third section 213 can always be in an open state, so as to connect the interior of the container body 4 and the external environment when there is too much steam and too high pressure inside the container body 4. This not only improves the safety during the cooking process, but also reduces the possibility of the second exhaust channel 213a being blocked by splashing food, thereby ensuring the cleanliness of the inside of the second exhaust channel 213a.

[0139] At the same time, the second section 212 of the valve body 21 has a cavity, which can be connected to the valve cavity 214, and is used to reduce the overall weight of the valve body 21, thereby realizing a lightweight design of the check valve 2. In addition, during the processing of the valve body 21, the cavity is also beneficial to reducing the amount of material used, thereby reducing the production cost of the valve body 21.

[0140] The lid 1 is also connected to a handle assembly 5, which includes a handle body 51 and a push plate 52. The handle body 51 has a through hole 511, and at least a portion of the second section 212 is located within the through hole 511. The second section 212 is capable of moving relative to the through hole 511 along the height direction of the container lid during cooking. In a first operating state, at least a portion of the second section 212 is capable of extending out of the through hole 511, allowing the third section 213 to engage with the push plate 52. In a second operating state, at least a portion of the second section 212 is capable of retracting into the through hole 511, releasing the third section 213 from the push plate 52.

[0141] When the container lid is in the second operating state, the interior of the container body 4 is connected to the external environment, and the pressure inside the container body 4 is low. This causes the third section 213 of the valve body 21 to abut against the outer wall of the lid body 1, the first sealing member 22 to separate from the interior of the lid body 1, the second section 212 to be completely located within the through-hole 511, and the third section 213 to be unengaged with the push plate 52. At this point, the cooking container is unlocked, and the push plate 52 can move radially along the container lid under external force, allowing the user to release the container lid from the container body 4 by actuating the handle assembly 5.

[0142] When the container lid is in the first operating state, the interior of the container body 4 is disconnected from the external environment, and the pressure inside the container body 4 is high. This causes the third section 213 of the valve body 21 to separate from the outer wall of the lid body 1, the first sealing member 22 to abut against the inner wall of the lid body 1, at least a portion of the second section 212 to extend out of the through-hole 511, and the third section 213 to engage with the push plate 52. At this point, the cooking container is locked, and the third section 213 restricts radial movement of the push plate 52 in the container lid, preventing the user from releasing the engagement between the container lid and the container body 4 by actuating the handle assembly 5.

[0143] When the container lid is in the third operating state, the interior of the container body 4 is in communication with the external environment, and the pressure inside the container body 4 is too high. This causes the third section 213 of the valve body 21 to separate from the outer wall of the lid body 1, the first sealing member 22 to abut against the inner wall of the lid body 1, and at least a portion of the second section 212 to extend out of the through-hole 511. The third section 213 engages with the push plate 52. At this point, the cooking container is locked, and the third section 213 restricts radial movement of the push plate 52 in the container lid, preventing the user from releasing the engagement between the container lid and the container body 4 by actuating the handle assembly 5.

[0144] Therefore, when the pressure inside the container body 4 increases, the valve body 21 can be driven to move upward along the height direction of the container lid, so that at least a portion of the second section 212 of the valve body 21 extends out of the through hole 511, and the third section 213 of the valve body 21 engages with the push plate 52. At this time, the push plate 52 cannot move radially along the container lid due to the restriction of the third section 213. Therefore, the user cannot open the cooking container by driving the handle assembly 5 when the check valve 2 is in the raised position, which helps to improve the user's safety during the cooking process.

[0145] In a specific embodiment, Figure 3 、 Figure 4 and Figure 9 As shown, the side wall of the valve cavity 214 is further provided with a protrusion 214a, and the check valve 2 further includes an elastic member 24, which is located in the valve cavity 214, and the two ends of the elastic member 24 are respectively connected to the valve core 23 and the protrusion 214a.

[0146] In the embodiment of the present application, the two ends of the elastic member 24 are respectively connected to the valve core 23 and the protrusion 214a, and are used to drive the valve core 23 to reset after the pressure of the cooking container is released, so that the container cover can be switched from the third working state to the first working state, reducing the possibility that the container cover cannot be in a sealed state due to the valve core 23 being stuck in the valve cavity 214, and improving the reliability of the check valve 2 during operation.

[0147] Specifically, during the cooking process, when excessive steam and pressure within the container body 4 are present, the driving force generated by the steam is greater than the elastic force of the elastic member 24, causing the elastic member 24 to elastically deform. This allows the steam to push the valve core 23 upward along the height of the container lid, thereby opening the valve cavity 214. At this point, the container lid is in the third operating state. After the cooking container is depressurized, the steam and pressure within the container body 4 gradually decrease. When the driving force generated by the steam gradually decreases to a value less than the elastic force of the elastic member 24, the elastic member 24 releases its elastic force, allowing it to return to its initial state under the action of the elastic force. This allows the valve core 23 to move downward along the height of the container lid under the action of the elastic force, thereby sealing the opening of the valve cavity 214. At this point, the container lid is in the first operating state.

[0148] In a specific embodiment, Figure 6 and Figure 17 As shown, the elastic member 24 includes a main body 241 and at least two bent portions 242 connected to the main body 241. The bent portions 242 are bent relative to the main body 241. The main body 241 is connected to the protrusion 214a, and the bent portions 242 are connected to the valve core 23. The angle between the bent portions 242 and the main body 241 can be changed to allow the elastic member 24 to deform elastically.

[0149] In the embodiment of the present application, one end of the elastic member 24 is connected to the protrusion 214a through the main body 241, so as to provide support for the supporting elastic member 24 during the upward movement of the valve core 23 along the height direction of the container cover, thereby improving the stability and reliability of the connection between the elastic member 24 and the valve cavity 214; the other end of the elastic member 24 is connected to the valve core 23 through the bending portion 242, so as to limit the upward movement of the valve core 23 along the height direction of the container cover through the angle between the bending portion 242 and the main body 241. At the same time, after the cooking container is depressurized, the valve core 23 is driven to reset through the angle between the bending portion 242 and the main body 241, so as to realize the switching of the container cover from the third working state to the first working state.

[0150] Specifically, during cooking, when excess steam and excessive pressure build up inside the container body 4, the driving force generated by the steam becomes greater than the elastic force of the elastic member 24, gradually reducing the angle between the bent portion 242 and the main body 241. This allows the steam to push the valve core 23 upward along the height of the container lid, thereby opening the valve cavity 214. The container lid is now in the third operating state. After the pressure in the cooking container is released, the steam and pressure inside the container body 4 gradually decrease. When the driving force generated by the steam gradually decreases to a value less than the elastic force of the elastic member 24, the elastic member 24 releases its elastic force, gradually increasing the angle between the bent portion 242 and the main body 241 under the action of the elastic force. This allows the valve core 23 to move downward along the height of the container lid under the action of the elastic force, thereby sealing the opening of the valve cavity 214. The container lid is now in the first operating state.

[0151] In a possible embodiment, when the elastic member 24 includes a main body 241 and at least two bent portions 242 connected to the main body 241, the two bent portions 242 can be symmetrically arranged relative to the main body 241 so that the elastic member 24 can release uniform elastic force to the valve core 23 to ensure the stability of the movement of the valve core 23 in the valve cavity 214.

[0152] In a specific embodiment, Figure 5 、 Figure 6 、 Figure 16 and Figure 17 As shown, the elastic member 24 is a spring, or the elastic member 24 includes at least two connected clips.

[0153] In the embodiment of the present application, when the elastic member 24 is a spring or a retaining spring, it can not only reduce the production cost of the check valve 2, but also improve the stability and reliability of the valve core 23 during movement. Figure 5 and Figure 16As shown, when the elastic member 24 is a spring, the valve core 23 can be a spherical structure, so that when the two are matched, the elastic member 24 can apply a uniform elastic force to the valve core 23, and in the case of failure of the elastic member 24, the valve core 23 with a spherical structure can also automatically reset under the action of gravity. At the same time, it can also reduce the possibility of the valve core 23 being offset during movement, resulting in the opening of the valve cavity 214 being unable to be sealed, which is conducive to improving the reliability of the check valve 2 during operation. Or, as Figure 6 and Figure 17 As shown, when the elastic member 24 is at least two connected retaining springs, the valve core 23 can also be a spherical structure to ensure that the valve core 23 can be subjected to uniform elastic force.

[0154] In a specific embodiment, Figure 2 、 Figure 5 and Figure 6 As shown, the surface of the valve core 23 for contacting the side wall of the opening of the valve cavity 214 is arc-shaped or circular.

[0155] In the embodiment of the present application, the arc-shaped or circular surface is not only convenient for processing, but also can serve as a guide for the resetting of the valve core 23, so as to improve the stability of the fit between the valve core 23 and the opening of the valve cavity 214. At the same time, it can also reduce the possibility of the valve core 23 being offset during movement, resulting in the opening of the valve cavity 214 being unable to be sealed, which is beneficial to improving the sealing effect of the valve core 23 on the opening of the valve cavity 214, thereby improving the sealing performance of the container cover in the first working state.

[0156] In a specific embodiment, Figure 4 、 Figure 14 and Figure 15 As shown, the valve core 23 includes a main body 231, a matching portion 232 and a limiting portion 233. Along the height direction of the container cover, the matching portion 232 is located between the main body 231 and the limiting portion 233, and the main body 231 is located on the side of the matching portion 232 facing the opening of the valve cavity 214. There is a gap between the main body 231 and the side wall of the opening of the valve cavity 214, wherein the elastic member 24 is connected to the side of the limiting portion 233 facing away from the main body 231.

[0157] In this embodiment of the present application, the main body 231 of the valve core 23 has a flow surface 231a, with a gap between the flow surface 231a and the sidewalls of the valve cavity 214 opening. When the container lid is in the third operating state, steam within the container body 4 flows into the valve cavity 214 through the gap between the flow surface 231a and the sidewalls of the valve cavity 214 opening, then flows into the second exhaust channel 213a through the valve cavity 214, and finally flows out to the outside environment through the second exhaust channel 213a. The cross-section of the flow surface 231a along the height of the container lid is planar, creating a large flow area between the flow surface 231a and the sidewalls of the valve cavity 214 opening, thereby improving the exhaust efficiency of the cooking container. The outer wall of the main body 231 can be provided with multiple flow surfaces 231a spaced apart along the circumference of the container lid. This helps improve the exhaust efficiency of the cooking container, allowing the container body 4 to quickly exhaust cold air to the outside environment during the initial heating period and quickly equalize the internal and external pressure differences during the cooling period.

[0158] The valve core 23 also includes a limiting portion 233, which is connected to the side of the matching portion 232 away from the main body 231. One end of the elastic member 24 can be matched with the limiting portion 233 so that when the valve core 23 moves relative to the valve cavity 214 along the height direction of the container cover, the limiting portion 233 limits the direction of elastic deformation of the elastic member 24 to improve the reliability of the elastic member 24 during operation.

[0159] The valve core 23 also includes a guide surface 231b. This guide surface 231b is located on the side of the flow-through surface 231a that faces the container body 4 along the height of the container lid. This guide surface 231b serves to guide the valve core 23 when it seals the opening of the valve cavity 214, thereby facilitating smoother movement of the valve core 23 within the valve cavity 214. The guide surface 231b gradually decreases in size along the height of the container lid in a radial direction.

[0160] The check valve 2 also includes a second sealing member 25 , which is sleeved on the fitting portion 232 . The second sealing member 25 is used to abut against the side wall of the opening of the valve cavity 214 , and the main body 231 and the limiting portion 233 are used to abut against the second sealing member 25 .

[0161] Specifically, during the engagement of the valve core 23 with the opening of the valve cavity 214, the valve core 23 can block the opening of the valve cavity 214 via the second sealing member 25, thereby improving the sealing effect of the valve core 23 on the opening of the valve cavity 214. This helps to improve the sealing performance of the container lid in a sealed state, thereby quickly cooking food. Furthermore, when the second sealing member 25 is sleeved onto the mating portion 232, one end of the second sealing member 25 abuts against the limiting portion 233 along the height direction of the container lid, while the other end of the second sealing member 25 abuts against the main body 231. This allows the main body 231 and the limiting portion 233 to clamp the second sealing member 25 along the height direction of the container lid, thereby improving the stability and reliability of the connection between the second sealing member 25 and the mating portion 232, reducing the possibility of the second sealing member 25 falling off the valve core 23, and ensuring the sealing effect of the valve core 23 on the opening of the valve cavity 214.

[0162] In one possible implementation, Figure 2 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 12 and Figure 13 As shown, the end of the valve body 21 is connected to a valve cap 26 , and the valve cap 26 and the inner cavity of the valve body 21 form a valve cavity 214 . The valve cap 26 abuts against the first sealing member 22 .

[0163] In the embodiment of the present application, the valve bonnet 26 includes a first step portion 261, a second step portion 262, and a support portion 263. Along the height direction of the container lid, the second step portion 262 is located on the side of the first step portion 261 facing away from the support portion 263. The first step portion 261 is configured to abut against the valve body 21, the second step portion 262 is configured to seal with the valve core 23, and the support portion 263 is configured to support the first sealing member 22. The bottom wall of the valve bonnet 26 has an opening (not shown) through which at least a portion of the valve core 23 can extend out of the valve bonnet 26.

[0164] Specifically, the valve cap 26 is detachably connected to the valve body 21, making it easier for users to clean or replace the first sealing member 22 in a timely manner, reducing the possibility of seal failure of the check valve 2 during cooking, and thus improving the reliability of the container lid during cooking. Along the height of the container lid, the end of the valve body 21 facing the container body 4 is provided with external threads 211c. The support portion 263 defines a cavity, the inner sidewall of which is provided with internal threads 263a. The valve body 21 and valve cap 26 are threadedly connected via the external threads 211c and the internal threads 263a. In other embodiments, the valve body 21 and valve cap 26 can also be detachably connected through other means such as a snap-fit connection.

[0165] During the process of the valve cap 26 and the valve body 21 being matched and connected, the support portion 263 can abut against the first seal 22, so that the support portion 263 can jointly support the first seal 22 with the side wall of the installation groove 211b, so as to further increase the support area of the first seal 22 and improve the installation reliability of the first seal 22.

[0166] During the process of connecting the valve bonnet 26 to the valve body 21, the valve body 21 is threadedly connected to the internal thread 263a of the valve bonnet 26 via the external thread 211c. After the connection is completed, the first step 261 of the valve bonnet 26 can abut against the end of the valve body 21 facing the container body 4, so that the first step 261 and the end of the valve body 21 are in surface contact, which helps to increase the friction between the two, thereby making the connection between the internal thread 263a and the external thread 211c difficult to be released, improving the stability and reliability of the connection between the valve bonnet 26 and the valve body 21, and further improving the structural stability of the check valve 2 during the cooking process.

[0167] When the valve core 23 abuts against the second step portion 262, the valve core 23 can block the opening of the valve cap 26 to put the container lid in a sealed state. At this time, the steam inside the container body 4 cannot be discharged to the external environment, so that the pressure inside the container body 4 gradually increases, so that by increasing the pressure inside the container body 4, food can be cooked quickly, which is beneficial to improving cooking efficiency.

[0168] An embodiment of the present application further provides a cooking container, which includes a container body 4 and a container cover. The container cover is any one of the container covers described above, and the container cover is fitted onto the container body 4 .

[0169] In the embodiment of the present application, when the container lid is closed on the container body 4, the cooking container includes at least three working states during the cooking process to meet the different needs of the cooking container in different cooking stages, which is conducive to improving the user experience.

[0170] When the cooking container is in the initial stage of heating, the container lid is in the second operating state. In the second operating state, due to the opening of the first exhaust passage 3, the cooking container is in an exhaust state. When the cooking container is in the initial stage of heating, the cold air inside the container body 4 is discharged to the outside environment through the first exhaust passage 3, which is beneficial to improving the cooking efficiency of the cooking container.

[0171] When the cooking container is continuously heated, causing the steam inside the container body 4 to increase in pressure, the container lid enters a first operating state. In the first operating state, the first exhaust passage 3 and the second exhaust passage 213a are closed, making the cooking container sealed. This creates a positive pressure during the continuous heating of the cooking container, which helps improve the cooking efficiency of the cooking container.

[0172] When continued heating of the cooking container causes excessive steam and excessive pressure inside the container body 4, the container lid enters a third operating state. In the third operating state, the second exhaust passage 213a is open, venting the cooking container. This balances the internal and external pressure differentials while the cooking container continues to heat, improving cooking efficiency and safety.

[0173] When the cooking container is in a cooling period after heating, the container lid is in a second operating state. In the second operating state, the first exhaust passage 3 is open, causing the cooking container to be in a venting state. This allows steam inside the container body 4 to be exhausted to the outside environment through the first exhaust passage 3 when the cooking container is in a cooling period, thereby improving the heat dissipation efficiency and safety of the cooking container.

[0174] Therefore, during the cooking process, when the container lid is in the second operating state, with the first exhaust passage 3 open, it can connect the interior of the container body 4 with the external environment, thereby balancing the pressure difference between the inside and outside of the container body 4, allowing the user to easily lift the container lid and improving safety when lifting the container lid. When the container lid is in the first operating state, with the first exhaust passage 3 closed, it can seal the container body 4, allowing a positive pressure to be generated inside the container body 4, improving cooking efficiency, thereby meeting the user's needs and enhancing the user experience. When the container lid is in the third operating state, with the second exhaust passage 213a open, it can connect the container body 4 with the external environment when food is boiling, reducing the pressure inside the container body 4 and improving safety during the cooking process.

[0175] The above describes in detail the structure, features and effects of the present application based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present application, but the present application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of the present application, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present application.

Claims

1. A container lid, characterized in that: The container cover comprises: A cover body (1), wherein the cover body (1) has a mounting hole (11); A check valve (2), the check valve (2) comprising a valve body (21) and a first sealing member (22), the first sealing member (22) being sleeved on an outer wall of the valve body (21), the valve body (21) being movably mounted on the mounting hole (11), and having a first exhaust passage (3) between the valve body and the side wall of the mounting hole (11), and the valve body (21) being movable relative to the cover body (1) along a height direction of the container cover, so that the container cover has at least a first working state and a second working state; In a first working state, the first sealing member (22) is sealedly engaged with the inner wall of the cover body (1) to block the first exhaust channel (3); in a second working state, the first sealing member (22) is released from the sealing engagement with the inner wall of the cover body (1) to open the first exhaust channel (3).

2. The container cover according to claim 1, wherein: An exhaust groove (211a) is provided on the outer wall of the valve body (21). Along the height direction of the container cover, the exhaust groove (211a) is located on the side of the first sealing member (22) facing the cover body (1). The gap between the exhaust groove (211a) and the side wall of the mounting hole (11) forms the first exhaust channel (3). When the valve body (21) moves along the mounting hole (11), the first sealing member (22) can be sealed with the cover body (1) to block the first exhaust channel (3).

3. The container cover according to claim 2, wherein: The exhaust groove (211a) is a T-shaped structure, and the outer wall of the valve body (21) is provided with a plurality of the exhaust grooves (211a) distributed at intervals along the circumferential direction.

4. The container cover according to any one of claims 1 to 3, characterized in that: The valve body (21) has a valve cavity (214), and the valve body (21) is further provided with a second exhaust passage (213a) communicating with the valve cavity (214); The check valve (2) further comprises a valve core (23), one end of the valve cavity (214) is provided with an opening along the height direction of the container cover, and the valve core (23) is capable of moving along the height direction of the container cover to block or open the opening; The container lid also has a third working state, in which the valve core (23) can open the opening to open the second exhaust channel (213a); in the first working state and the second working state, the valve core (23) can block the opening to block the second exhaust channel (213a).

5. The container cap according to claim 4, wherein: Along the height direction of the container cover, the valve body (21) includes a first section (211), a second section (212), and a third section (213); the third section (213) is located between the first section (211) and the second section (212); and the outer diameter of the third section (213) is larger than the outer diameters of the first section (211) and the second section (212); The outer wall of the valve body (21) is provided with an exhaust groove (211a), at least a portion of the exhaust groove (211a) is provided in the first section (211), the second exhaust channel (213a) is provided in the third section (213), the first sealing member (22) is sleeved on the first section (211), the cover body (1) is further connected to a handle assembly (5), the handle assembly (5) comprises a handle body (51) and a push plate (52), the handle body (51) has a through hole (511), and at least a portion of the second section (212) is located in the through hole (511); In the first working state, at least a portion of the second section (212) extends out of the through hole (511), and the third section (213) is engaged with the push plate (52); in the second working state, at least a portion of the second section (212) is retracted into the through hole (511), and the third section (213) is released from the engagement with the push plate (52).

6. The container cap according to claim 4, wherein: The side wall of the valve cavity (214) is further provided with a protrusion (214a), and the stop valve (2) further comprises an elastic member (24), wherein the elastic member (24) is located in the valve cavity (214), and the two ends of the elastic member (24) are respectively connected to the valve core (23) and the protrusion (214a).

7. The container cap according to claim 6, wherein: The elastic member (24) includes a main body (241) and at least two bent portions (242) connected to the main body (241), the bent portions (242) are bent relative to the main body (241), the main body (241) is connected to the protruding portion (214a), and the bent portions (242) are connected to the valve core (23); The angle between the bent portion (242) and the main body (241) can be changed to allow the elastic member (24) to deform elastically.

8. The container cap according to claim 6, wherein: The elastic member (24) is a spring, or the elastic member (24) includes at least two connected clip springs.

9. The container cap according to claim 6, wherein: The surface of the valve core (23) used for contacting the side wall of the opening is arc-shaped or circular.

10. The container cap according to claim 6, wherein: The valve core (23) comprises a main body (231), a matching portion (232) and a limiting portion (233); along the height direction of the container cover, the matching portion (232) is located between the main body (231) and the limiting portion (233); and the main body (231) is located on a side of the matching portion (232) facing the opening; a gap is provided between the main body (231) and a side wall of the opening; and the elastic member (24) is connected to a side of the limiting portion (233) facing away from the main body (231); The non-opening valve (2) further comprises a second sealing member (25), the second sealing member (25) being sleeved on the matching portion (232), the second sealing member (25) being used to abut against the side wall of the opening, and the main body (231) and the limiting portion (233) being used to abut against the second sealing member (25).

11. A cooking container, characterized in that: The cooking container comprises: container body(4); A container cover, wherein the container cover is the container cover according to any one of claims 1 to 10; Wherein, the container cover is fitted on the container body (4).

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