A pressure relief pot cover and pressure cooker

Abstract

The utility model relates to pressure cooker technical field, specifically is a kind of pressure relief pot cover and pressure cooker, the exhaust mechanism of the utility model is driven push rod by stem head to drive pressure relief piece to realize exhaust and separate from air hole, without user direct contact high-temperature exhaust area, reduce the scald hidden trouble caused by steam external injection, compared with traditional pressing type exhaust mode, operation safety significantly improves.The reset mechanism of the utility model can automatically drive stem head and push rod to reset after exhaust is completed, ensure that pressure relief piece accurately blocks air hole, without user manual operation reset, avoid the problem that pot cover cannot be sealed and pressurized due to user forgets to reset, ensure the normal operation of electric pressure cooker next time use, improve the stability of product use.

Description

Technical Field

[0001] This utility model relates to the field of pressure cooker technology, specifically a pressure-relieving lid and a pressure cooker. Background Technology

[0002] As an upgrade from traditional pressure cookers and rice cookers, electric pressure cookers offer the advantages of energy saving and efficient heating, but some problems have gradually emerged during use. For example, due to the high pressure inside the pot after cooking, users often need to wait a long time before opening the lid. If the pressure is forcibly released or the lid is opened at this time, the high-temperature steam can easily cause burns, especially when cooking porridge or soup, where splattering may occur.

[0003] To achieve quick opening, some manufacturers have installed a manually operated vent valve on the lid to accelerate cooling by releasing pressure. While this method is effective to some extent, there is still room for improvement. Currently, most electric pressure cookers on the market have a relatively high internal pressure of approximately 50-90 kPa during cooking. The lid is designed with a safety float that prevents the push rod and connecting plate from moving before the pressure is released, thus preventing accidental opening and providing safety protection. However, if users need to add ingredients during cooking or wish to open the lid quickly, manual venting is still necessary due to the long natural cooling time.

[0004] There are two main types of manual venting methods: The first type uses a push-button switch, which lifts the gravity valve via a linkage, causing it to detach from the vent pipe seal and vent air. Releasing the switch causes the gravity valve to fall back and restore the seal. This method requires continuous pressing, which is inconvenient and poses a risk of burns from the steam spraying out during venting.

[0005] The second type has two buttons on the lid: a venting button and a sealing button. Pressing the venting button locks it in the open position, and a connecting rod lifts a counterweight to continuously release air. The user can release the button at this point, ensuring a high level of safety. The lid can be opened after venting is complete. However, the problem is that the counterweight remains open after venting. If the user doesn't press the sealing button to restore the seal before the next use, the pressure cooker will not pressurize properly, causing inconvenience.

[0006] Therefore, it is necessary to optimize the structure of existing electric pressure cookers to further improve ease of use and user experience while ensuring safety. Utility Model Content

[0007] To address the aforementioned technical problems of existing manual venting methods easily causing burns, or users easily forgetting to reset the pressure cooker, resulting in continuous venting failure and affecting the user experience, the technical solution adopted by this utility model is as follows: A pressure-relieving pot lid includes a lid body, the lid body having an exhaust chamber, an air hole located in the exhaust chamber, a pressure-relieving component connected to the air hole, a mounting cavity located on one side of the exhaust chamber, and an exhaust mechanism located in the mounting cavity. The exhaust mechanism includes a rod head, a push rod connected to the rod head, and a reset mechanism connected to the rod head or push rod. The exhaust chamber has a connecting groove into which the push rod extends. The push rod has a connecting end connected to the reset mechanism. The rod head is used to drive the push rod to move, so that the push rod drives the pressure-relieving component away from the air hole. The reset mechanism is used to drive the rod head or push rod to reset, and so that the pressure-relieving component blocks the air hole.

[0008] Furthermore, in some embodiments of this utility model, the cover is provided with a sliding groove for the rod head to slide, one side of the sliding groove is provided with a first limiting end to restrict the movement of the rod head, and the connecting groove is provided with a second limiting end to lift the end of the push rod.

[0009] Furthermore, in some embodiments of this utility model, a guide portion is provided between the bottom of the connecting groove and the second limiting end, and the guide portion is inclined or arc-shaped.

[0010] Furthermore, in some embodiments of this utility model, the exhaust mechanism includes a first housing connected to the cover, the first housing having a receiving cavity for accommodating the rod head and a receiving cavity opening communicating with the receiving cavity and allowing the push rod to extend out, the reset mechanism including an elastic element with one end connected to the connecting end, and the mounting cavity having a fixing block connected to the other end of the elastic element.

[0011] Furthermore, in some embodiments of this utility model, the rod head is provided with a connecting part extending from the receiving cavity to the outside of the sliding groove, the inner side of the cover is provided with a connecting post, and the first housing is provided with a first housing connecting groove that cooperates with the connecting post.

[0012] Furthermore, in some embodiments of this utility model, a concave collection cavity is provided between the mounting cavity and the exhaust cavity, the push rod is provided with a push rod body and a bent portion located at the end of the push rod body, the bent portion bends downward from the mounting cavity toward the exhaust cavity, and the upper end of the bent portion is higher than the bottom of the connecting groove.

[0013] Furthermore, in some embodiments of this utility model, the cover body includes an upper cover body and a lower cover body, the upper cover body and the lower cover body together form the mounting cavity, the sliding groove and the exhaust cavity are located on the upper cover body, the push rod body is provided with a limiting hole, the upper cover body is provided with a first limiting block extending towards the opening of the receiving cavity and a second limiting block extending into the limiting hole for limiting, and a limiting groove is formed between the first limiting block and the bottom of the receiving cavity.

[0014] Furthermore, in some embodiments of this utility model, the push rod moves horizontally, the fixing block is connected to the side of the first housing away from the first limiting end, the connecting end is located on the side of the push rod body near the rod head, and the elastic element is connected horizontally between the first limiting end and the connecting end.

[0015] Furthermore, in some embodiments of this utility model, the accommodating cavity is located on one side of the central axis of the cover, the exhaust cavity is located on the other side of the central axis of the cover, the line connecting the midpoint of the accommodating cavity and the midpoint of the exhaust cavity is a first direction, and the distance between the midpoint of the accommodating cavity and the midpoint of the exhaust cavity along the first direction is between one-third and four-fifths of the side length or diameter of the cover along the first direction.

[0016] Another objective of this invention is to provide a pressure cooker, including a pot body and a pressure-relieving lid as described above.

[0017] The beneficial effects of this utility model are as follows: This invention's venting mechanism uses a rod-driven push rod to disengage the pressure relief component from the vent, thus venting the pressure. This eliminates the need for direct user contact with the high-temperature venting area, reducing the risk of burns from steam spray. Compared to traditional press-type venting methods, operational safety is significantly improved. The reset mechanism automatically resets the rod and push rod after venting, ensuring the pressure relief component precisely seals the vent. This eliminates the need for manual reset by the user, preventing issues like the lid failing to seal and pressurize due to user forgetting to reset, ensuring the electric pressure cooker functions normally for the next use, and improving product stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pressure cooker of this utility model.

[0019] Figure 2 for Figure 1 AA sectional view.

[0020] Figure 3 This is a schematic diagram of a pressure-relieving pot lid according to the present invention (pressure relief components omitted).

[0021] Figure 4 for Figure 3 Enlarged view of part B.

[0022] Figure 5 This is a schematic diagram of the pressure relief of a pressure-relieving pot lid according to the present invention (pressure relief components omitted).

[0023] Figure 6 for Figure 5 Enlarged view of part C.

[0024] Figure 7 This is a schematic diagram of a pressure-relieving pot lid according to the present invention (top lid body omitted).

[0025] Figure 8 for Figure 7 Enlarged view of part D.

[0026] Figure 9 This is an exploded view of the pressure cooker of this utility model (pressure relief components omitted).

[0027] Figure 10 for Figure 9 Enlarged view of part E.

[0028] Figure 11 This is an exploded view of the pressure cooker of this utility model from another angle (pressure relief components omitted).

[0029] Figure 12 for Figure 11 Enlarged view of part F. Detailed Implementation

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] It should be noted that all directional indications in this utility model embodiment, such as (up, down, left, right, front, back, etc.), are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] Example 1 like Figures 1 to 12The pressure-relieving pot lid shown includes a lid body 1. The lid body 1 has an exhaust chamber 2, an air hole 3 located in the exhaust chamber 2, a pressure-relieving component 30 connected to the air hole 3, a mounting cavity 4 located on one side of the exhaust chamber 2, and an exhaust mechanism 5 located in the mounting cavity 4. The exhaust mechanism 5 includes a rod head 51, a push rod 52 connected to the rod head 51, and a reset mechanism connected to the rod head 51 or the push rod 52. The exhaust chamber 2 has a connecting groove 21 into which the push rod 52 extends. The push rod 52 has a connecting end 521 connected to the reset mechanism. The rod head 51 is used to drive the push rod 52 to move so that the push rod 52 drives the pressure-relieving component 30 to disengage from the air hole 3. The reset mechanism is used to drive the rod head 51 or the push rod 52 to reset and so that the pressure-relieving component 30 blocks the air hole 3.

[0034] This invention's venting mechanism uses a rod-driven push rod to disengage the pressure relief component from the vent, thus venting the pressure. This eliminates the need for direct user contact with the high-temperature venting area, reducing the risk of burns from steam spray. Compared to traditional press-type venting methods, operational safety is significantly improved. The reset mechanism automatically resets the rod and push rod after venting, ensuring the pressure relief component precisely seals the vent. This eliminates the need for manual reset by the user, preventing issues like the lid failing to seal and pressurize due to user forgetting to reset, ensuring the electric pressure cooker functions normally for the next use, and improving product stability.

[0035] Optionally, in some embodiments, the user can manually or electrically move the push rod, thereby disengaging the pressure relief component from the vent to achieve controllable pressure relief. Compared to traditional continuous press-type venting, this solution reduces the risk of high-temperature steam directly contacting the user's hands, avoids burns caused by steam splashes, and improves user safety.

[0036] Optionally, in some embodiments, the reset mechanism can be a spring-loaded actuator that drives the rod head or push rod to reset, or it can be driven by a reciprocating drive motor that moves the rod head or push rod. The reset mechanism can automatically drive the rod head to reset and simultaneously drive the push rod back to its original position, allowing the pressure relief component to reseal the vent and ensure the pressure inside the pot is sealed. Compared to the prior art where the self-locking vent key requires manual reset by the user or an additional sealing key, this solution can automatically restore the sealing state without additional user operation, avoiding the problem of the pressure cooker failing to pressurize properly due to forgetting to reset, and improving ease of use.

[0037] Optionally, in some embodiments, the user can manually drive the rod head to move, thereby driving the push rod to move. When the user releases the rod head, the reset mechanism drives the push rod to reset, the push rod drives the rod head to move, the push rod drives the pressure relief component to move, or the push rod moves away from the pressure relief component, so that the pressure relief component blocks the air hole.

[0038] Optionally, in some embodiments, the user can mechanically drive the push rod to move, thereby causing the rod head to move. The user can determine that the venting mechanism is operating based on the movement of the rod head. After the pressure relief component has finished venting, the user can mechanically drive the push rod to reset. The push rod drives the rod head to move, and the push rod drives the pressure relief component to move or the push rod moves away from the pressure relief component, so that the pressure relief component blocks the air hole.

[0039] Optionally, in some embodiments, the pressure relief component blocks the vent in the vertical direction, and when the push rod is disengaged from the pressure relief component, the pressure relief component blocks the vent under the action of gravity.

[0040] Optionally, in some embodiments, the pressure relief component blocks the vent in a horizontal direction. After the pressure relief component has finished depressurizing, the push rod drives the pressure relief component to move, and the push rod causes the pressure relief component to block the vent under the action of the thrust.

[0041] Optionally, in some embodiments, the pressure relief component may be a ball-cone gravity valve, a pendulum gravity valve, a side-sliding gravity valve, a cam valve, an SMA valve, a thermal piston valve, etc.

[0042] Example 2 Based on Example 1, Example 2 also has the following implementation method: like Figures 3 to 12 The pressure-relieving pot lid shown has a lid body 1 with a sliding groove 6 for sliding the rod head 51. A first limiting end 61 restricting the movement of the rod head 51 is provided on one side of the sliding groove 6. A second limiting end 211 lifting the end of the push rod 52 is provided in the connecting groove 21.

[0043] Specifically, the sliding groove, in conjunction with the first limiting end, can precisely limit the movement range of the rod head, preventing excessive displacement of the push rod due to excessive force applied by the user or loosening of the exhaust mechanism, thereby preventing abnormal detachment of the pressure relief component or failure of the seal, and improving the mechanical stability and durability of the exhaust mechanism.

[0044] Furthermore, as a preferred embodiment of this utility model and not a limitation, when the rod head is engaged with the first limiting end, the first limiting end restricts the rod head from moving in the opposite direction, and the rod head remains in a fixed position, so that the user can release the rod head without constantly pushing it. When the rod head needs to be reset, the rod head can be disengaged from the first limiting end, and the rod head can be reset under the action of the reset mechanism.

[0045] Specifically, the sliding groove is arranged in an arc shape, L shape, or U-shape.

[0046] Specifically, the second limiting end provides support or lifting during push rod movement. The push rod can push the pressure relief component upwards, ensuring more even force distribution when it disengages the component from the vent, preventing pressure relief from being obstructed due to push rod tilting or jamming, and improving the smoothness and response speed of the pressure relief action. The second limiting end also allows the push rod to be maintained at a certain height, eliminating the need for continuous pressing to achieve the lifting effect.

[0047] Specifically, the guiding and limiting functions of the sliding groove and the second limiting end can reduce the offset or abnormal friction of components such as the rod head and push rod, reduce mechanical wear, and improve the service life of the overall exhaust mechanism.

[0048] Example 3 Based on Example 2, Example 3 also has the following implementation method: like Figures 3 to 6 The pressure-relieving pot lid shown has a guide portion 212 between the bottom of the connecting groove 21 and the second limiting end 211. The guide portion 212 is inclined or arc-shaped.

[0049] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the guide portion is inclined or arc-shaped, which can provide progressive guidance during the movement of the push rod, so that the push rod transitions more smoothly when it approaches the second limit end, effectively reducing the sticking or jerking sensation during the movement of the push rod, thereby reducing the user's operating resistance and improving the comfort and smoothness of manual operation.

[0050] Specifically, through the inclined or arc-shaped guide, the push rod can achieve a smoother displacement change when it drives the pressure relief component to disengage or return to seal the air hole. This reduces the impact or uneven force between the pressure relief component and the air hole, which helps the pressure relief component to be positioned and sealed more accurately. This enhances the sealing performance of the air hole and prevents air pressure leakage or sealing failure caused by insufficient opening and closing.

[0051] Specifically, in some embodiments, the part of the guide that contacts the push rod is a linear structure, which enables smooth movement.

[0052] Example 4 Example 4, based on Example 2, also has the following implementation method: like Figures 7 to 10 The pressure-relieving pot lid shown includes a venting mechanism 5 comprising a first housing 7 connected to the lid body 1. The first housing 7 has a receiving cavity 71 for accommodating the rod head 51 and a receiving cavity opening 72 communicating with the receiving cavity 71 and allowing the push rod 52 to extend out. The reset mechanism includes an elastic member 8 with one end connected to the connecting end 521, and the mounting cavity 4 has a fixing block 73 connected to the other end of the elastic member 8.

[0053] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the exhaust mechanism integrates a receiving cavity and a receiving cavity opening through a first housing. The first housing can be quickly assembled with the cover, simplifying the overall product assembly process, improving production efficiency, and facilitating later disassembly and maintenance, thereby reducing maintenance difficulty and cost.

[0054] Specifically, the reset mechanism adopts a structure in which one end of the elastic element is connected to the connecting end of the push rod and the other end is connected to the fixed block. Through the first housing and the mounting cavity, the elastic element acts stably between the receiving cavity and the mounting cavity, ensuring that the elastic element is subjected to uniform force during compression and rebound, thereby improving the reliability and consistency of the reset action.

[0055] Specifically, the accommodating cavity can effectively accommodate and protect the connecting end of the rod head and push rod, reducing the impact of external impurities or operational shocks; at the same time, the elastic element is stably connected to the mounting cavity through the fixing block, avoiding fatigue or failure of the elastic element due to displacement or torsion, thereby improving the durability of the reset mechanism and the entire exhaust mechanism.

[0056] Optionally, in some embodiments, the connecting end serves as a fulcrum, and the elastic element is located on the lower side of the push rod. When the push rod lifts the pressure relief component upward, the push rod pulls the elastic element. When the external force acting on the push rod disappears, the elastic element resets and drives the push rod to move downward. The push rod disengages from the pressure relief component, and the pressure relief component seals the air hole under the action of gravity.

[0057] Optionally, in some embodiments, the connecting end serves as a fulcrum, and the elastic element is located on the right side of the push rod. When the push rod moves to the left, moves through the first limiting end, and lifts the pressure relief component, the push rod pulls the elastic element. When the external force acting on the push rod disappears, the elastic element resets, causing the push rod to move to the right. The push rod disengages from the pressure relief component, and the pressure relief component seals the air hole under the action of gravity.

[0058] Example 5 Example 5, based on Example 4, also has the following implementation method: like Figures 9 to 12 The pressure-relieving pot lid shown has a rod head 51 with a connecting part 511 extending from the receiving cavity 71 to the outside of the sliding groove 6, a connecting post 11 on the inner side of the lid body 1, and a first housing 7 with a first housing connecting groove 74 that cooperates with the connecting post 11.

[0059] Specifically, the first housing connecting groove and the connecting post inside the cover body form an assemblable structure, enabling rapid alignment and stable positioning of the exhaust mechanism and the cover. This prevents the exhaust mechanism from shifting or loosening during operation, improves the overall stability and reliability of the exhaust mechanism, and ensures the consistency of positioning and movement of the rod head, push rod, and reset mechanism during operation.

[0060] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the connecting part extends from the receiving cavity to the outside of the sliding groove, facilitating intuitive operation and adjustment of the exhaust mechanism by the user or assembler. The rod head extends to the outside of the sliding groove through the connecting part. The connecting part can be L-shaped or straight, and the rod head can be straight or L-shaped.

[0061] Specifically, the portion of the connecting part exposed outside the sliding groove has a diameter wider than the diameter of the sliding groove, in order to prevent the connecting part from deviating or fully extending into the receiving cavity.

[0062] Example 6 Example 6, based on Example 1, also has the following implementation method: like Figures 2 to 10 The pressure-relieving pot lid shown has a concave collection cavity 9 between the mounting cavity 4 and the exhaust cavity 2. The push rod 52 has a push rod body 522 and a bent portion 523 located at the end of the push rod body 522. The bent portion 523 bends downward from the mounting cavity 4 toward the exhaust cavity 2, and the upper end of the bent portion 523 is higher than the bottom of the connecting groove 21.

[0063] Specifically, the concave collection cavity can effectively collect the condensate produced during cooking, preventing it from directly entering the installation cavity.

[0064] Optionally, in some embodiments, the collecting chamber is connected to the venting chamber of the pressure cooker, or it can be connected to an external collecting device.

[0065] Furthermore, as a preferred embodiment of this utility model and not a limitation, the downward bending shape of the bending part can spatially adapt to the concave structure of the collecting cavity, reducing interference between the push rod and the collecting cavity and connecting groove, ensuring that the push rod moves flexibly during the exhaust and reset process, and ensuring stable switching between pressure relief and sealing functions.

[0066] Specifically, the bent portion bends downwards from the mounting cavity towards the exhaust cavity, with its upper end higher than the bottom of the connecting groove. This ensures that the push rod maintains a force transmission path during movement. In some embodiments, due to the relatively long length of the push rod, a bent portion is provided to reduce excessive deformation of the entire push rod when the end of the push rod presses against the pressure relief component. This allows the bent portion to deform first upon contact with the pressure relief component, thereby reducing direct deformation of the push rod body. Furthermore, the lower position of the bent portion reduces the lifting height required when prying up the pressure relief component, thus reducing the lifting force needed.

[0067] Example 7 Example 7, based on Example 4, also has the following implementation method: like Figures 7 to 12The pressure-relieving pot lid shown includes an upper lid 12 and a lower lid 13, which together form the mounting cavity 4. The sliding groove 6 and the exhaust cavity 2 are located on the upper lid 12. The push rod body 522 is provided with a limiting hole 5221. The upper lid 12 is provided with a first limiting block 10 extending toward the opening 72 of the accommodating cavity and a second limiting block 14 extending into the limiting hole 5221 for limiting. A limiting groove 75 is formed between the first limiting block 10 and the bottom of the accommodating cavity 71.

[0068] Specifically, the cover adopts a split design where the upper and lower covers can be separated, and the mounting cavity, sliding groove and exhaust cavity are divided into sections, which can realize the independent assembly of each functional module, simplify the overall product assembly process and improve production efficiency.

[0069] Specifically, the first and second limiting blocks on the upper cover cooperate with the limiting holes on the push rod body to effectively constrain the lateral displacement of the push rod during movement, preventing the push rod from deviating, shaking, or derailing during push-pull operations or exhaust actions. This ensures that the push rod moves accurately and responds sensitively when it drives the pressure relief component to disengage or return to seal the air hole, thereby improving the operational stability and control precision of the exhaust mechanism.

[0070] Example 8 Example 8, based on Example 4, also has the following implementation method: like Figures 7 to 12 The pressure-relieving pot lid shown has a push rod 52 that moves horizontally, a fixing block 73 connected to the side of the first housing 7 away from the first limiting end 61, a connecting end 521 located on the side of the push rod body 522 near the rod head 51, and an elastic element 8 connected horizontally between the first limiting end 61 and the connecting end 521.

[0071] Furthermore, as a preferred embodiment of this utility model and not a limitation, the horizontal movement of the push rod ensures that when it drives the pressure relief component to disengage or return to its original position to block the air hole, its direction of movement matches the layout direction of the exhaust chamber and the sliding groove, effectively reducing energy loss and directional deviation during movement. Simultaneously, the elastic element is horizontally connected between the first limiting end and the connecting end, allowing the reset force to act directly on the connecting end of the push rod via the shortest path. This ensures the push rod moves quickly and stably during pressure relief and reset, improving the dynamic response performance and operational reliability of the exhaust mechanism.

[0072] Specifically, by connecting the fixing block to the side of the first housing away from the first limiting end, and connecting the elastic element horizontally between the first limiting end and the connecting end, the reset mechanism can make full use of the horizontal space between the first housing and the mounting cavity for layout. Without increasing the overall thickness or volume of the product, the compact design of the reset mechanism is achieved, which is conducive to the miniaturization and weight reduction of the product.

[0073] Specifically, the connecting end is located on the side of the push rod body near the rod head, allowing the elastic element to act more directly on the key force-bearing parts of the push rod. This ensures that when the push rod drives the rod head and pressure relief component to move, it can accurately control their displacement, avoiding problems such as poor sealing or abnormal detachment of the pressure relief component due to insufficient or excessive reset force. This improves the accuracy of the vent opening and closing and the reliability of the seal, ensuring the safe use of the pressure cooker.

[0074] Specifically, the elastic element applies force evenly in the horizontal direction, which can effectively reduce abnormal wear at the contact points between the push rod and the receiving cavity, connecting groove, etc., extend the service life of moving parts such as the push rod, rod head and pressure relief parts, and reduce the long-term maintenance cost of the product.

[0075] Example 9 Based on Example 4, Example 9 also has the following implementation method: like Figures 7 to 9 The pressure-relieving pot lid shown has a accommodating cavity 71 located on one side of the central axis of the lid body 1, and an exhaust cavity 2 located on the other side of the central axis of the lid body 1. The line connecting the midpoint of the accommodating cavity 71 and the midpoint of the exhaust cavity 2 is a first direction. The distance between the midpoint of the accommodating cavity 71 and the midpoint of the exhaust cavity 2 along the first direction is between one-third and four-fifths of the side length or diameter of the lid body 1 along the first direction.

[0076] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, by arranging the accommodating cavity and the exhaust cavity on both sides of the central axis of the cover, and controlling the distance between their midpoints to be one-third to four-fifths of the side length or diameter of the cover along the first direction, the exhaust mechanism is spatially distributed inside the cover. This avoids structural interference caused by excessive concentration of the accommodating cavity and the exhaust cavity, and also prevents space waste caused by excessive distance between them. Thus, while ensuring the functional integrity of the exhaust mechanism, the compact and coordinated design of the internal structure of the cover is achieved, which is conducive to the miniaturization and weight reduction of the product.

[0077] Optionally, in some embodiments, when the cover is rectangular, the accommodating cavity and the exhaust cavity are respectively arranged on both sides of the central axis of the cover, the line connecting the midpoints of the accommodating cavity and the exhaust cavity is the first direction, which can be the long side direction of the rectangle, and the distance between the midpoints of the accommodating cavity and the exhaust cavity is between one-third and four-fifths of the long side direction of the rectangle.

[0078] Of course, in some embodiments, the line connecting the midpoints of the receiving cavity and the exhaust cavity can be the direction of the wide side of a rectangle.

[0079] Optionally, in some other embodiments, the line connecting the midpoints of the receiving cavity and the exhaust cavity can be the diagonal direction of a rectangle.

[0080] Optionally, in some other embodiments, the first direction of the line connecting the midpoints of the receiving cavity and the exhaust cavity can be the direction of the hypotenuse, that is, the direction that intersects the diagonal of the rectangle. In this case, the distance between the midpoints of the receiving cavity and the exhaust cavity is between one-third and four-fifths of the longest distance of the hypotenuse of the rectangle.

[0081] Optionally, in some embodiments, when the cover is circular, the line connecting the midpoints of the accommodating cavity and the exhaust cavity can be the diameter-width direction of the circle.

[0082] Optionally, in some embodiments, when the cover is circular, the line connecting the midpoints of the accommodating cavity and the exhaust cavity can be the diameter-width direction of the circle.

[0083] Optionally, in some embodiments, when the cover is elliptical, the first direction of the line connecting the midpoints of the accommodating cavity and the exhaust cavity can be either the major axis direction or the minor axis direction of the ellipse.

[0084] Example 10 Example 10, based on the above examples, also has the following implementation method: like Figures 1 to 12 The pressure cooker shown includes a pot body 100 and a pressure-relieving lid as described above.

[0085] This invention utilizes a pressure-relieving lid with a venting mechanism to controllably release the pressure inside the pot, effectively preventing burns caused by direct injection of high-pressure steam or improper operation, or situations where pressure cannot be applied normally. At the same time, the automatic reset sealing structure ensures that the pressure inside the pot is reliably maintained after pressure release, thus improving the overall safety of the pressure cooker during opening the lid and cooking processes.

[0086] Specifically, the pressure-relieving lid allows users to achieve precise and rapid venting control without complicated steps when venting pressure. While ensuring the integrity of the venting function, this utility model effectively utilizes the internal space of the lid, reduces interference and wear between moving parts, and improves the structural stability and component durability of the pressure cooker during long-term use by optimizing the force path and sealing design, thereby reducing the failure rate and maintenance costs.

[0087] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A pressure-relieving pot lid, comprising a lid body (1), characterized in that: The cover (1) is provided with an exhaust chamber (2), an air hole (3) located in the exhaust chamber (2), a pressure relief component (30) connected to the air hole (3), an installation cavity (4) located on one side of the exhaust chamber (2), and an exhaust mechanism (5) located in the installation cavity (4). The exhaust mechanism (5) includes a rod head (51), a push rod (52) connected to the rod head (51), and a reset mechanism connected to the rod head (51) or the push rod (52). The exhaust chamber (2) is provided with a connecting groove (21) into which the push rod (52) extends. The push rod (52) is provided with a connecting end (521) connected to the reset mechanism. The rod head (51) is used to drive the push rod (52) to move so that the push rod (52) drives the pressure relief component (30) to disengage from the air hole (3). The reset mechanism is used to drive the rod head (51) or the push rod (52) to reset and so that the pressure relief component (30) blocks the air hole (3).

2. The pressure-relieving pot lid according to claim 1, characterized in that: The cover (1) is provided with a sliding groove (6) for sliding the rod head (51). A first limiting end (61) is provided on one side of the sliding groove (6) to restrict the movement of the rod head (51). The connecting groove (21) is provided with a second limiting end (211) to lift the end of the push rod (52).

3. A pressure-relieving pot lid according to claim 2, characterized in that: A guide portion (212) is provided between the bottom of the connecting groove (21) and the second limiting end (211), and the guide portion (212) is inclined or arc-shaped.

4. A pressure-relieving pot lid according to claim 2, characterized in that: The exhaust mechanism (5) includes a first housing (7) connected to the cover (1). The first housing (7) has a receiving cavity (71) for accommodating the rod head (51) and a receiving cavity opening (72) communicating with the receiving cavity (71) and allowing the push rod (52) to extend out. The reset mechanism includes an elastic element (8) with one end connected to the connecting end (521). The mounting cavity (4) has a fixing block (73) connected to the other end of the elastic element (8).

5. A pressure-relieving pot lid according to claim 4, characterized in that: The rod head (51) is provided with a connecting part (511) extending from the accommodating cavity (71) to the outside of the sliding groove (6), the cover (1) is provided with a connecting post (11), and the first housing (7) is provided with a first housing connecting groove (74) that cooperates with the connecting post (11).

6. A pressure-relieving pot lid according to claim 4, characterized in that: A concave collection chamber (9) is provided between the mounting cavity (4) and the exhaust cavity (2). The push rod (52) is provided with a push rod body (522) and a bent portion (523) located at the end of the push rod body (522). The bent portion (523) bends downward from the mounting cavity (4) toward the exhaust cavity (2). The upper end of the bent portion (523) is higher than the bottom of the connecting groove (21).

7. A pressure-relieving pot lid according to claim 6, characterized in that: The cover (1) includes an upper cover (12) and a lower cover (13). The upper cover (12) and the lower cover (13) enclose the mounting cavity (4). The sliding groove (6) and the exhaust cavity (2) are located on the upper cover (12). The push rod body (522) is provided with a limiting hole (5221). The upper cover (12) is provided with a first limiting block (10) extending toward the opening (72) of the receiving cavity and a second limiting block (14) extending into the limiting hole (5221) to cooperate and limit the position. A limiting groove (75) is formed between the first limiting block (10) and the bottom of the receiving cavity (71).

8. A pressure-relieving pot lid according to claim 6, characterized in that: The push rod (52) moves horizontally, the fixing block (73) is connected to the side of the first housing (7) away from the first limiting end (61), the connecting end (521) is located on the side of the push rod body (522) close to the rod head (51), and the elastic element (8) is connected horizontally between the first limiting end (61) and the connecting end (521).

9. A pressure-relieving pot lid according to claim 4, characterized in that: The accommodating cavity (71) is located on one side of the central axis of the cover (1), and the exhaust cavity (2) is located on the other side of the central axis of the cover (1). The line connecting the midpoint of the accommodating cavity (71) and the midpoint of the exhaust cavity (2) is the first direction. The distance between the midpoint of the accommodating cavity (71) and the midpoint of the exhaust cavity (2) along the first direction is between one-third and four-fifths of the side length or diameter of the cover (1) along the first direction.

10. A pressure cooker, characterized in that: It includes a pot body (100) and a pressure-relieving pot lid as described in any one of claims 1-9.

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