Safety valve and cooking container

Abstract

The utility model relates to the field of cooking containers, in particular to a safety valve and a cooking container. The safety valve comprises a valve body and a valve element, and a first channel, a second channel and a third channel are formed in the valve body. One end of the first channel and one end of the second channel are both used for being communicated with the container body, the other end of the first channel and the other end of the second channel are both communicated with the third channel, and the third channel can be communicated with the external environment. The valve element is arranged in the third channel and can move in the third channel. The safety valve has three states, in the first state, the valve element can block the second channel, and the first channel can communicate with the external environment through the third channel. And in the second state, the valve element can be pushed to move in the direction away from the first channel, and the first channel and the second channel can communicate with the external environment through the third channel. And in the third state, the valve element can be pushed to move in the direction close to the first channel, and the first channel and the second channel can communicate with the external environment through the third channel.

Description

Technical Field

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

[0002] The working principle of a micro-pressure cooker is similar to that of a traditional pressure cooker, but with less pressure. It heats the water in the pot and evaporates it into steam, thus forming a pressure higher than atmospheric pressure in the pot. The pressure can cook food thoroughly in a shorter time.

[0003] The existing pressure safety valves for micro-pressure cookers can simultaneously switch between positive pressure and negative pressure, and most of them adopt a multi-spring adjustment form, which has a complex structure. Utility Model Content

[0004] The present application provides a safety valve and a cooking container, which are intended to achieve bidirectional pressure regulation of the safety valve when facing positive and negative pressures, and to simplify the structure of the safety valve.

[0005] The present application provides a safety valve for a cooking container, the safety valve comprising:

[0006] A valve body, wherein a first channel, a second channel and a third channel are provided in the valve body, one end of the first channel and one end of the second channel are both used to communicate with the container body, and the other end of the first channel and the other end of the second channel are both communicated with the third channel, and the third channel can be communicated with the external environment;

[0007] a valve core, the valve core being disposed in the third channel and being movable in the third channel;

[0008] The safety valve has three states. In the first state, the valve core can block the second channel, and the first channel can communicate with the external environment through the third channel.

[0009] In the second state, the valve core can be pushed to move in a direction away from the first channel, and both the first channel and the second channel can communicate with the external environment through the third channel;

[0010] In the third state, the valve core can be pushed to move toward the direction close to the first channel, and both the first channel and the second channel can be communicated with the external environment through the third channel.

[0011] In the present application, when the gas pressure in the cooking container is within the normal range, the safety valve is in the first state. Specifically, the valve core is in the state of blocking the second channel to limit the gas in the cooking container from being discharged through the second channel. At the same time, part of the gas in the cooking container can also be discharged to the outside through the gap between the valve core in the first channel and the third channel and the inner wall of the third channel, so that the cooking container is exhausted to the outside in a small amount, so that the cooking container is in a micro-pressure state, the cooking time is accelerated, and the container cover can be opened at any time during the cooking process to check the cooking status.

[0012] When the gap between the valve core in the third channel and the inner wall of the third channel is not enough to discharge the newly added air pressure in the container body, causing the air pressure in the cooking container to be higher than the normal range, the safety valve will be converted to the second state. Specifically, the pressure formed by the air pressure discharged through the first channel can push the valve core to move away from the first channel, so that the valve core is away from the second channel, and the second channel can also be connected to the third channel, so that the cooking container can be exhausted to the outside through the second hole. At this time, both the first channel and the second channel can be connected to the external environment through the third channel, so that the gas in the cooking container can be exhausted to the outside through the first channel and the third channel, and the gas in the cooking container can also be exhausted to the outside through the second channel and the third channel, thereby achieving pressure relief of the cooking container.

[0013] At the same time, the pressure formed by the air pressure discharged to the second channel can also push the valve core to move in a direction away from the second channel, thereby accelerating the efficiency of the valve core in opening the second channel and improving the pressure relief efficiency of the cooking container.

[0014] When the air pressure in the cooking container is lower than the normal range, the safety valve will be converted to the third state. Specifically, the air pressure of the external environment will push the valve core to move in the direction close to the first channel, so that the valve core is away from the second channel, and the second channel can also be connected to the third channel, so that the cooking container can take in air through the second channel. At this time, both the first channel and the second channel can be connected to the external environment through the third channel, so that the cooking container can take in air through the first channel and the third channel, and the cooking container can take in air through the second channel and the third channel, thereby increasing the air pressure in the cooking container and enabling the container cover to be opened. Moreover, the greater the pressure difference between the air pressure in the cooking container and the air pressure of the external environment, the larger the passage opened between the second channel and the valve core.

[0015] In a possible design, a cross-sectional area of ​​the first channel is greater than a cross-sectional area of ​​the second channel.

[0016] In the present application, it is necessary to limit the cross-sectional area of ​​the first channel to be larger than the cross-sectional area of ​​the second channel, so that the force provided by the air pressure of the external environment to the valve core moving toward the first channel is greater than the force provided to the valve core moving toward the second channel, ultimately causing the valve core to move toward the first channel, thereby enabling the valve core to open the second channel.

[0017] In a possible design, the valve core is a spherical structure;

[0018] The cross-sectional area of ​​the third channel is larger than the diameter of the valve core, and the diameter of the valve core is larger than the cross-sectional area of ​​the first channel.

[0019] In the present application, by setting the valve core as a spherical structure, the valve core can roll and move in the third channel, reducing the friction between the valve core and the third channel, so that the valve core can move in the third channel. In addition, to prevent the valve core from entering the first channel or being sucked into the cooking container along the second channel, the diameter of the valve core is larger than the cross-sectional area of ​​the first channel, so that when the air pressure in the cooking container is within the normal range, the valve core can return to the first state.

[0020] In a possible design, a notch is provided at one end of the third channel away from the first channel, and the third channel is connected to the external environment through the notch.

[0021] In the present application, the gas in the cooking container flows along the first hole, the first channel, and the third channel to the notch position for discharge, and the gas in the cooking container body can also flow along the second hole, the second channel, and the third channel to the notch position for discharge.

[0022] In a possible design, in the first state, the notch is located on a side of the valve core away from the first channel.

[0023] In the present application, in the first state, the notch is not located above the valve core, but is located on one side of the valve core, so that the highest point of the valve core corresponds to the inner wall of the third channel, so as to achieve a small gap between the valve core and the third through hole, thereby ensuring that the cooking container is vented while its interior is in a micro-pressure state.

[0024] In a possible design, the maximum width of the notch is smaller than the diameter of the valve core, so as to limit the valve core from being separated from the third channel.

[0025] In the present application, by setting the maximum width of the notch to be smaller than the diameter of the valve core, the valve core is limited from being pushed out of the third channel by air pressure, while also reducing the risk of the valve core detaching from the third channel when the safety valve is shaken.

[0026] In a possible design, the third channel is provided with a first limiting section and a second limiting section;

[0027] The side wall of the third channel is provided with a communication hole communicating with the second channel;

[0028] Along the moving direction of the valve core, the first limiting section is arranged on one side of the communicating hole, and the second limiting section is arranged on the other side of the communicating hole;

[0029] In the first state, the first limiting section and the second limiting section can limit the valve core from being away from the communicating hole.

[0030] In the present application, in the first state, the first limiting segment and the second limiting segment can limit the movement of the valve core, so that the valve core is always in a state of blocking the connecting hole to block the second channel and limit the gas in the cooking container from being discharged along the second hole.

[0031] In the second state, the pressure formed by the air pressure discharged through the first channel can push the valve core to overcome the first limit section and move in the direction away from the first channel, so that the valve core is away from the second channel, and the second channel can also be connected to the third channel, so that the cooking container can exhaust air outward through the second hole.

[0032] In the third state, the air pressure of the external environment will push the valve core to overcome the second limit section and move toward the first channel, so that the valve core moves away from the second channel, and the second channel can also be connected to the third channel, so that the cooking container can take in air through the second hole.

[0033] In a possible design, the first limiting section and the second limiting section are sloped surfaces, and the position of the communicating hole is the lowest position of the third channel;

[0034] The valve core can fall back to the first state from the second state or the third state under the action of its own gravity.

[0035] In the present application, when the air pressure in the cooking container reaches the normal range after pressure relief, the thrust of the air pressure discharged through the first channel on the valve core is less than the weight of the valve core, and the valve core will move along the first limit section to the position of the connecting hole. At this time, the safety valve returns to the first state from the second state. When the air pressure in the cooking container reaches the normal range after air intake, the thrust of the air pressure of the external environment on the valve core is less than the weight of the valve core, and the valve core will move along the second limit section to the position of the connecting hole. At this time, the safety valve returns to the first state from the third state.

[0036] Among them, the pressure difference limiting range can be adjusted by controlling parameters such as the mass of the valve core, the slope of the first limit section and the second limit section, the diameter of the first channel and the second channel, and the gap between the inner wall of the third channel and the valve core, so as to achieve the effect of bidirectional regulation of the pressure difference.

[0037] The present application also provides a cooking container, the cooking container comprising:

[0038] container body;

[0039] A container cover, which can cover the container body;

[0040] A safety valve, wherein the safety valve is the safety valve described above, and the safety valve is installed on the container body or the container cover.

[0041] In the present application, the safety valve is used to exhaust or intake air through the safety valve when the pressure in the cooking container is too high or too low during the cooking process, so as to ensure the safety of the cooking container and ensure the normal use of the cooking container.

[0042] The invention enables the safety valve to adjust a certain range of positive pressure and negative pressure in the cooking container through the cooperation of the channels in the valve body and the valve core, thereby ensuring that the air pressure in the cooking container is within a limited safety range. In addition, the safety valve has a simple structure, requires fewer parts, and has a low cost.

[0043] In a possible design, one of the container body and the container cover is provided with a first hole and a second hole;

[0044] The first channel is communicated with the first hole, and the second channel is communicated with the second hole.

[0045] In the present application, the safety valve can be installed on the container cover, which is provided with a first hole and a second hole, so that the safety valve is connected with the inner cavity of the container body through the first channel connecting with the first hole and the second channel connecting with the second hole.

[0046] Alternatively, the safety valve can be installed on a container body, and a first hole and a second hole are opened on the top wall of the container body, so that the safety valve is connected to the inner cavity of the container body through the first channel communicating with the first hole and the second channel communicating with the second hole.

[0047] 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

[0048] Figure 1 This is a schematic diagram of the safety valve provided in this application being installed on a container body;

[0049] Figure 2 This is a schematic diagram of the safety valve provided in this application in the first state;

[0050] Figure 3 A schematic diagram of the safety valve provided in this application in the second state;

[0051] Figure 4 This is a schematic diagram of the safety valve provided in this application in the third state;

[0052] Figure 5 This is a schematic top view of the safety valve provided in this application.

[0053] Reference numerals:

[0054] 1-Safety valve;

[0055] 11-valve body;

[0056] 11a-first pipeline;

[0057] 11b - second pipeline;

[0058] 11c - third pipe;

[0059] 111- First channel;

[0060] 112- Second channel;

[0061] 113-Third channel;

[0062] 113a-notch;

[0063] 113b-first limiting section;

[0064] 113c- second limiting section;

[0065] 113d- communication hole;

[0066] 113e-limiting part;

[0067] 12-valve core;

[0068] 2-Container body;

[0069] 21-first hole;

[0070] 22- Second hole.

[0071] 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

[0072] 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.

[0073] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0074] 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 "a", "said" 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 other meanings.

[0075] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0076] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0077] The present embodiment provides a cooking container, which may be a micro-pressure cooker. The cooking container comprises a container body 2 and a container cover (not shown in the figure), which can be covered on the container body 2. The side wall of the container body 2 may be provided with a pair of oppositely arranged secondary handles (not shown in the figure), which can be used to hold the secondary handles to facilitate taking the cooking container.

[0078] The cooking container further comprises a safety valve 1, which is used to exhaust or inlet air through the safety valve 1 when the pressure in the container body 2 is too high or too low during the cooking process, so as to ensure the safety of the cooking container and ensure the normal use of the cooking container.

[0079] The safety valve 1 can be installed on the container cover, and a through hole is provided on the container cover, so that the safety valve 1 is connected with the inner cavity of the container body 2 through the through hole. Alternatively, the safety valve 1 can be installed on the container body 2, and a through hole is provided on the top wall of the container body 2, so that the safety valve 1 is connected with the inner cavity of the container body 2 through the through hole. The following will take the installation of the safety valve 1 on the container body 2 as an example for explanation.

[0080] The specific structure and use status of the safety valve 1 will be described below in conjunction with the accompanying drawings.

[0081] like Figure 1The schematic diagram of the safety valve 1 installed on the container body 2 is shown. The top wall of the container body 2 is provided with a first hole 21 and a second hole 22, and the first hole 21 and the second hole 22 are both connected to the inner cavity of the container body 2. The safety valve 1 includes a valve body 11, and the valve body 11 is a pipeline structure. Specifically, in some embodiments, the valve body 11 can be composed of three sections of pipeline parts, namely a first pipeline 11a, a second pipeline 11b and a third pipeline 11c, and the third pipeline 11c connects the first pipeline 11a and the second pipeline 11b, and the first pipeline 11a and the second pipeline 11b are also connected to the container body 2. A first channel 111 is provided in the first pipeline 11a, a second channel 112 is provided in the second pipeline 11b, and a third channel 113 is provided in the third pipeline 11c.

[0082] Among them, one end of the first channel 111 is connected to the first hole 21, and the other end of the first channel 111 is connected to the third channel 113, and the third channel 113 can be connected to the external environment, so that the inner cavity of the container body 2 can be connected to the external environment through the first hole 21, the first channel 111, and the third channel 113. One end of the second channel 112 is connected to the second hole 22, and the other end of the second channel 112 is connected to the third channel 113, and the third channel 113 can be connected to the external environment, so that the inner cavity of the container body 2 can be connected to the external environment through the second hole 22, the second channel 112, and the third channel 113.

[0083] Please continue to refer to Figure 1 The safety valve 1 further includes a valve core 12 , which is disposed in the third passage 113 and is capable of moving in the third passage 113 .

[0084] like Figure 2 , Figure 3 and Figure 4 The figure shows a schematic diagram of the safety valve in working state. The safety valve 1 has three states during use, namely: Figure 2 The first state shown, Figure 3 The second state shown and Figure 4 The third state is shown.

[0085] For more details, please refer to Figure 2 The first state is a state when the air pressure in the cooking container is within a normal range. In the first state, the valve core 12 can block the second channel 112 , and the first channel 111 can communicate with the external environment through the third channel 113 .

[0086] It should be noted that the normal range of the air pressure in the cooking container refers to the normal range of the air pressure in the inner cavity of the cooking container within a limited range. If the air pressure in the cooking container is higher than the normal range, the air pressure in the cooking container is too high, which may cause the cooking container to be unable to withstand excessive pressure, and instantly increase the jet speed of the cooking container, which may cause the risk of accidentally injuring the user. If the air pressure in the cooking container is lower than the normal range, the air pressure in the cooking container is too low, which may cause the container cover to be attracted to the container body 2, and it is more difficult to open the container cover.

[0087] That is, when the gas pressure in the cooking container is within the normal range, the valve core 12 is in a state of blocking the second channel 112, and the valve core 12 blocks the second hole 22 by blocking the second channel 112, so as to limit the gas in the cooking container from being discharged through the second hole 22. At the same time, part of the gas in the cooking container can also be discharged to the outside through the first hole 21, the first channel 111, and the gap between the valve core 12 and the inner wall of the third channel 113 in the third channel 113, so that a small amount of gas is discharged from the cooking container to the outside, so that the cooking container is in a micro-pressure state, the cooking time is accelerated, and the container cover can be opened at any time during the cooking process to check the cooking status.

[0088] Please continue to refer to Figure 3 The second state is when the air pressure in the cooking container is higher than the normal range. In the second state, the valve core 12 can be pushed to move away from the first channel 111, and both the first channel 111 and the second channel 112 can communicate with the external environment through the third channel 113.

[0089] That is, during the cooking process of the cooking container, when the gap between the valve core 12 in the third channel 113 and the inner wall of the third channel 113 is not enough to discharge the newly added gas pressure in the container body 2, resulting in the gas pressure in the cooking container being higher than the normal range, the pressure formed by the gas pressure discharged through the first channel 111 can push the valve core 12 to move away from the first channel 111 (moving to the right in the figure), so that the valve core 12 is away from the second channel 112, and the second channel 112 can also communicate with the third channel 113, and the cooking container can be exhausted to the outside through the second hole 22. At this time, the first channel 111 and the second channel 112 can both communicate with the external environment through the third channel 113, so that the gas in the cooking container can be exhausted to the outside through the first hole 21, the first channel 111 and the third channel 113, and the gas in the cooking container can also be exhausted to the outside through the second hole 22, the second channel 112 and the third channel 113, thereby achieving the pressure relief of the cooking container, reducing the internal pressure of the cooking container, and effectively preventing the dangerous situation caused by excessive pressure in the cooking container.

[0090] At the same time, the pressure formed by the air pressure discharged to the second channel 112 through the second hole 22 can also push the valve core 12 to move away from the second channel 112 (upward movement in the figure), thereby accelerating the efficiency of the valve core 12 in opening the second channel 112, thereby improving the pressure relief efficiency of the cooking container.

[0091] Furthermore, when the air pressure in the cooking container is within a normal range, the valve core 12 can return to the first state (how the valve core 12 returns from the second state to the first state is described in detail below).

[0092] Please continue to refer to Figure 4 The third state is when the air pressure in the cooking container is lower than the normal range (generally, when the food is turned off and cooled, the container cover is adsorbed on the container body 2, resulting in negative pressure inside the cooking container). In the third state, the valve core 12 can be pushed to move toward the first channel 111, and both the first channel 111 and the third channel 113 can communicate with the external environment through the third channel 113.

[0093] That is, when the air pressure in the cooking container is lower than the normal range, the air pressure of the external environment will push the valve core 12 to move toward the direction close to the first channel 111 (moving to the left in the figure), so that the valve core 12 is away from the second channel 112, and the second channel 112 can also communicate with the third channel 113, so that the cooking container can take in air through the second hole 22. At this time, the first channel 111 and the second channel 112 can both communicate with the external environment through the third channel 113, so that the cooking container can take in air through the first hole 21, the first channel 111 and the third channel 113, and the cooking container can take in air through the second hole 22, the second channel 112 and the third channel 113, thereby increasing the air pressure in the cooking container and enabling the container cover to be opened. Moreover, the greater the pressure difference between the air pressure in the cooking container and the air pressure of the external environment, the larger the passage opened between the second channel 112 and the valve core 12.

[0094] Furthermore, when the air pressure in the cooking container is within a normal range, the valve core 12 can return to the first state (how the valve core 12 returns from the third state to the first state is described in detail below).

[0095] Among them, it should be noted that the cross-sectional area of ​​the first channel 111 must be greater than the cross-sectional area of ​​the second channel 112, so that the force provided by the air pressure of the external environment to the valve core 12 to move toward the first channel 111 is greater than the force provided to the valve core 12 to move toward the second channel 112, and finally the valve core 12 moves toward the first channel 111, thereby enabling the valve core 12 to open the second channel 112.

[0096] In this embodiment, the safety valve 1 can adjust a certain range of positive pressure and negative pressure in the cooking container through the cooperation of the channels in the valve body 11 and the valve core 12, thereby ensuring that the air pressure in the cooking container is within a limited safety range. In addition, the safety valve 1 has a simple structure, requires fewer parts, and is easy to assemble.

[0097] Further, please continue to refer to Figures 2 to 4 The valve core 12 can be a spherical structure, and the cross-sectional area of ​​the third channel 113 is larger than the diameter of the valve core 12, so that the valve core 12 can roll and move in the third channel 113, reducing the friction between the valve core 12 and the third channel 113, so as to facilitate the movement of the valve core 12 in the third channel 113.

[0098] Furthermore, to prevent the valve core 12 from entering the first channel 111 or being sucked into the cooking container along the second channel 112, the diameter of the valve core 12 is larger than the cross-sectional area of ​​the first channel 111, so that when the air pressure in the cooking container is within a normal range, the valve core 12 can return to the first state.

[0099] Specifically, a limiting portion 113e is provided at one end of the third channel 113 close to the first channel 111, and the limiting portion 113e is provided to shrink the diameter of one end of the third channel 113 so that the diameter of the third channel 113 at this end is the same as the diameter of the first channel 111. Furthermore, the first channel 111 is connected to the third channel 113 via the limiting portion 113e.

[0100] It should be noted that the cross-sections of the first channel 111 , the second channel 112 and the third channel 113 mentioned above may be circular, square or other shapes, which are not specifically limited in this embodiment and may be set according to actual conditions.

[0101] Furthermore, the cross-sectional areas of the first channel 111 , the second channel 112 , and the third channel 113 mentioned above are the areas of the cross sections along the gas flow direction in the respective pipelines.

[0102] Please continue to refer to Figures 2 to 4 The third channel 113 is provided with a notch 113a at one end away from the first channel 111, and the third channel 113 is connected to the external environment through the notch 113a. That is, the gas in the cooking container flows along the first hole 21, the first channel 111, and the third channel 113 to the notch 113a and is discharged, and the gas in the cooking container body 2 can also flow along the second hole 22, the second channel 112, and the third channel 113 to the notch 113a and be discharged.

[0103] In order to prevent the valve core 12 from being pushed out of the third channel 113 by air pressure, the maximum width of the notch 113a is smaller than the diameter of the valve core 12, so as to prevent the valve core 12 from being separated from the third channel 113. At the same time, the risk of the valve core 12 being separated from the third channel 113 when the safety valve 1 is shaken is reduced.

[0104] Specifically, Figure 5 The figure shows a top view of the safety valve 1. Please refer to Figures 2 to 5 In the first state, the notch 113a is located on the side of the valve core 12 away from the first channel 111. That is, in the first state, the notch 113a is not located above the valve core 12, but on the side of the valve core 12, so that the highest point of the valve core 12 corresponds to the inner wall of the third channel 113, so that a small gap is formed between the valve core 12 and the third through hole, ensuring that the cooking container is vented while the interior thereof is in a micro-pressure state.

[0105] More specifically, the notch 113a can be formed on the top wall and the side wall (away from the side wall of the first channel 111) of the third channel 113, and the area of ​​the notch 113a is large enough to ensure the efficiency of pressure relief and air intake of the cooking container without increasing the volume of the safety valve 1. In addition, when the air pressure in the cooking container is higher than the normal range and the pressure difference is greater, the valve core 12 is closer to the notch 113a, so that the passage formed by the valve core 12 and the notch 113a is larger, thereby accelerating the pressure relief efficiency.

[0106] Furthermore, the valve body 11 may be an integral structure, and the valve body 11 may be made of materials such as silicone, so that the valve core 12 can be manually squeezed from the notch 113a into the third channel 113, or the valve core 12 can be manually squeezed out of the third channel 113 from the notch 113a.

[0107] Alternatively, the valve body 11 may be a split structure, and the valve body 11 may be divided into a symmetrical left valve and a right valve, and the valve core 12 is placed between the left valve and the right valve, and the two are spliced ​​and fixed. The fixing method may be clamping, welding, etc., which may be set according to the material of the valve body 11, and this embodiment does not specifically limit it.

[0108] Please continue to refer to Figures 2 to 4 , the third channel 113 is provided with a first limiting section 113b and a second limiting section 113c, and the side wall of the third channel 113 is provided with a connecting hole 113d connected with the second channel 112. Along the moving direction of the valve core 12, the first limiting section 113b is provided on one side of the connecting hole 113d, and the second limiting section 113c is provided on the other side of the connecting hole 113d. In the first state, the first limiting section 113b and the second limiting section 113c can limit the valve core 12 from being away from the connecting hole 113d, so that the valve core 12 blocks the second channel 112.

[0109] Specifically, in the first state, the first limiting section 113b and the second limiting section 113c can limit the movement of the valve core 12, so that the valve core 12 is always in a state of blocking the connecting hole 113d to block the second channel 112 and limit the gas in the cooking container from being discharged along the second hole 22.

[0110] In the second state, the pressure formed by the air pressure discharged through the first channel 111 can push the valve core 12 to overcome the first limiting section 113b and move in the direction away from the first channel 111 (moving to the right in the figure), so that the valve core 12 is away from the second channel 112, and the second channel 112 can also be connected to the third channel 113, so that the cooking container can exhaust air to the outside through the second hole 22.

[0111] In the third state, the air pressure of the external environment will push the valve core 12 to overcome the second limiting section 113c and move toward the direction close to the first channel 111 (moving to the left in the figure), so that the valve core 12 moves away from the second channel 112, and the second channel 112 can also be connected to the third channel 113, so that the cooking container can take in air through the second hole 22.

[0112] More specifically, the third channel 113 can be an arc-shaped structure, the first limiting section 113b and the second limiting section 113c can be sloped surfaces, and the position of the connecting hole 113d is the lowest position of the third channel 113, so that the valve core 12 can fall back from the second state or the third state to the first state under the action of its own gravity.

[0113] That is, when the air pressure in the cooking container reaches the normal range after the pressure is released, the thrust of the air pressure discharged through the first channel 111 on the valve core 12 is less than the weight of the valve core 12, and the valve core 12 will move along the first limit section 113b to the position of the connecting hole 113d. At this time, the safety valve 1 is restored from the second state to the first state. When the air pressure in the cooking container reaches the normal range after the air is taken in, the thrust of the air pressure of the external environment on the valve core 12 is less than the weight of the valve core 12, and the valve core 12 will move along the second limit section 113c to the position of the connecting hole 113d. At this time, the safety valve 1 is restored from the third state to the first state.

[0114] Among them, by controlling parameters such as the mass of the valve core 12, the slope of the first limit section 113b and the second limit section 113c, the diameters of the first channel 111 and the second channel 112, and the gap between the inner wall of the third channel 113 and the valve core 12, the different pressure difference limit ranges can be adjusted to achieve the effect of bidirectionally adjusting the pressure difference.

[0115] Furthermore, the first channel 111 may also be configured as an arc-shaped structure to facilitate the flow of gas.

[0116] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A safety valve, characterized in that: The safety valve (1) comprises: A valve body (11), wherein a first channel (111), a second channel (112) and a third channel (113) are arranged in the valve body (11), one end of the first channel (111) and one end of the second channel (112) are both used to communicate with the container body (2), and the other end of the first channel (111) and the other end of the second channel (112) are both in communication with the third channel (113), and the third channel (113) can be in communication with the external environment; a valve core (12), the valve core (12) being disposed in the third channel (113) and being capable of moving in the third channel (113); The safety valve (1) has three states. In a first state, the valve core (12) can block the second channel (112), and the first channel (111) can communicate with the external environment through the third channel (113); In the second state, the valve core (12) can be pushed to move in a direction away from the first channel (111), and both the first channel (111) and the second channel (112) can be connected to the external environment via the third channel (113); In the third state, the valve core (12) can be pushed to move in a direction close to the first channel (111), and both the first channel (111) and the second channel (112) can be connected to the external environment through the third channel (113).

2. The safety valve according to claim 1, characterized in that: The cross-sectional area of ​​the first channel (111) is greater than the cross-sectional area of ​​the second channel (112).

3. The safety valve according to claim 1, characterized in that: The valve core (12) is a spherical structure; The cross-sectional area of ​​the third channel (113) is greater than the diameter of the valve core (12), and the diameter of the valve core (12) is greater than the cross-sectional area of ​​the first channel (111).

4. The safety valve according to claim 1, characterized in that: A notch (113a) is provided at one end of the third channel (113) away from the first channel (111), and the third channel (113) is connected to the external environment through the notch (113a).

5. The safety valve according to claim 4, characterized in that: In the first state, the notch (113a) is located on a side of the valve core (12) away from the first channel (111).

6. The safety valve according to claim 4, characterized in that: The maximum width of the notch (113a) is smaller than the diameter of the valve core (12), so as to limit the valve core (12) from being separated from the third channel (113).

7. The safety valve according to any one of claims 1 to 6, characterized in that: The third channel (113) is provided with a first limiting section (113b) and a second limiting section (113c); The side wall of the third channel (113) is provided with a communication hole (113d) communicating with the second channel (112); Along the moving direction of the valve core (12), the first limiting section (113b) is arranged on one side of the communicating hole (113d), and the second limiting section (113c) is arranged on the other side of the communicating hole (113d); In the first state, the first limiting section (113b) and the second limiting section (113c) are capable of limiting the valve core (12) from moving away from the communicating hole (113d).

8. The safety valve according to claim 7, characterized in that: The first limiting section (113b) and the second limiting section (113c) are sloped surfaces, and the position of the communicating hole (113d) is the lowest position of the third channel (113); The valve core (12) can fall back to the first state from the second state or the third state under the action of its own weight.

9. A cooking container, characterized in that: The cooking container comprises: container body(2); A container cover, which can cover the container body (2); A safety valve (1), wherein the safety valve (1) is the safety valve (1) according to any one of claims 1 to 8, and the safety valve (1) is installed on the container body (2) or the container cover.

10. The cooking container according to claim 9, characterized in that: One of the container body (2) and the container cover is provided with a first hole (21) and a second hole (22); The first channel (111) is in communication with the first hole (21), and the second channel (112) is in communication with the second hole (22).

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