A pressure cooking appliance

Abstract

The utility model discloses a pressure cooking utensil, including the body of pot and the pot cover, the pot cover is provided with the exhaust port, is equipped with the exhaust valve at the exhaust port, the pot cover is provided with the pressure limiting valve above the exhaust valve, and the pressure limiting valve press exhaust valve to close the exhaust port, the pot cover still is provided with the solenoid valve and drive lever, and drive lever has the connecting portion with the rotation connection of pot cover and the movable arm, and the connecting portion is located the side of pressure limiting valve away from solenoid valve, and the movable arm has the drive section for cooperating with solenoid valve, and the transmission section acting on pressure limiting valve, to make the push rod of solenoid valve stretch, and the transmission section press pressure limiting valve below pressure limiting valve, and the push rod of solenoid valve retracts, and the transmission section loses the press of pressure limiting valve. Drive lever increases the length of force arm between connecting portion and solenoid valve through the movable arm of one -sided swing, amplifies the thrust effect, makes the movable arm more easily be driven to be able to reduce the power of solenoid valve, and saves the component cost.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a pressure cooking appliance. Background Technology

[0002] Commonly available micro-pressure rice cookers or high-pressure rice cookers have a vent, a vent valve to seal the vent, a solenoid valve, and a pressure limiting valve on the lid. When the solenoid valve is de-energized, it drives the pressure limiting valve to move down, and the force is transmitted to block the vent to form a seal. When the electromagnet is energized, it lifts the pressure limiting valve, releasing the downward pressure at the vent valve, and the vent valve opens the vent to release the air.

[0003] In the above solution, the exhaust port is normally closed when the solenoid valve is de-energized. However, when the temperature inside the pot is high and there is a lot of steam, closing the lid prevents the hot steam from escaping, creating resistance and making it difficult to close. Furthermore, when opening the lid, because the pot is not connected to the outside atmosphere, a negative pressure can easily form inside, causing the lid to be sucked in and difficult to lift. This results in both opening and closing the lid being laborious, negatively impacting the user experience.

[0004] In existing technologies, to overcome the aforementioned problems, a one-way valve or similar structure is typically installed on the pot lid. However, one-way valves are easily clogged by food grease and other contaminants, leading to malfunction. To address this, Chinese patent CN119033246A discloses a cooking appliance in which, when the push rod of the solenoid valve is in the triggered position, the push rod drives the lever to disengage from the pressure-limiting valve. This ensures that the exhaust port of the solenoid valve remains normally open when the power is off.

[0005] However, in the above solution, the solenoid valve and the pressure relief valve are driven by a lever positioned between them. The center of the lever is rotatably connected to the pot lid, with one end cooperating with the push rod of the solenoid valve and the other end driving the pressure relief valve. However, this transmission mechanism requires a large driving force, increasing the power requirements of the solenoid valve. This increases the cost of the solenoid valve, and consequently the overall cost of the machine. Furthermore, the high-power solenoid valve generates more heat during operation, leading to excessive temperature rise in the pot lid and affecting the lifespan of other internal components and electrical parts. Utility Model Content

[0006] This utility model provides a pressure cooking appliance that solves the problem of difficulty in opening and closing the lid when the exhaust port is normally closed when the solenoid valve is de-energized. It also solves the problem of low transmission efficiency of the transmission mechanism between the solenoid valve and the pressure limiting valve, which leads to increased component costs and serious heat generation.

[0007] The technical solution adopted in this utility model is as follows: A pressure cooking appliance includes a pot body and a lid. The lid has a vent that communicates with the inside of the pot, and a vent valve is provided at the vent. The vent valve can float up and down under the action of gas inside the pot. The lid has a pressure limiting valve above the vent valve, which can press the vent valve to close the vent. The lid also has a solenoid valve and a drive lever. The solenoid valve is located on the lateral side of the pressure limiting valve. The drive lever has a connecting part that is rotatably connected to the lid and a movable arm located on one side of the connecting part that can rotate around the connecting part. The connecting part is located on the side of the pressure limiting valve away from the solenoid valve. The movable arm has a drive section for cooperating with the solenoid valve and a transmission section that acts on the pressure limiting valve, so that when the push rod of the solenoid valve extends, the transmission section presses the pressure limiting valve to press down the vent valve. When the push rod of the solenoid valve retracts, the transmission section loses pressure on the pressure limiting valve.

[0008] In this invention, the connecting part of the drive lever is located on the side of the pressure-limiting valve away from the solenoid valve, so that both the solenoid valve and the pressure-limiting valve are located on the same side of the connecting part. The drive lever, through a single-sided swinging movable arm, cooperates with both the solenoid valve and the pressure-limiting valve. Compared with the scheme of swinging on both sides, this increases the lever arm length between the connecting part and the solenoid valve, changes the direction of thrust transmission, amplifies the thrust effect, and makes it easier for the solenoid valve push rod to drive the movable arm to move, thereby reducing the power of the solenoid valve. This not only saves component costs but also reduces the heat generated by the solenoid valve during operation.

[0009] Furthermore, since the drive section and transmission section are located on the same side of the connection, when the solenoid valve is energized, the push rod pushes the drive section downward, and the transmission section also moves downward, thus pressing down on the pressure relief valve and causing it to abut against the exhaust valve, blocking the exhaust port. When the solenoid valve is de-energized, the push rod retracts, the drive section swings upward, and the transmission section also swings upward, losing its pressure on the pressure relief valve. At this time, the exhaust valve can be pushed down by the airflow inside the pot, causing the pressure relief valve to rise and exhaust air. This achieves the exhaust port being normally open when the solenoid valve is de-energized. This design retains the low-cost solenoid valve while eliminating the need for components such as check valves, improving operational reliability, saving costs, and enhancing the user experience.

[0010] The pot lid is also equipped with a balancing component. The pressure relief valve includes a valve stem and a mounting rib protruding outward from the outer periphery of the valve stem. The balancing component is located above the mounting rib and can move up and down. A first elastic element is provided between the balancing component and the mounting rib. The transmission section presses the pressure relief valve through the balancing component.

[0011] The downward pressure exerted by the pressure relief valve on the exhaust valve is provided by the first elastic element, but the presence of this element can affect the movement of the exhaust valve. Specifically, when the movable arm swings upward, the first elastic element is stretched. When the exhaust valve floats upward, it needs to overcome not only the weight of the movable arm and the pressure relief valve, but also the elastic force of the first elastic element. Since the elastic force of the first elastic element is relatively large, this can cause the exhaust valve to fail to float upward and open the exhaust port, or the upward movement of the exhaust valve to be too small to reach its maximum opening. In this solution, by setting a balance element, the first elastic element is located between the balance element and the mounting rib, allowing the transmission section to transmit the downward pressure from the pressure relief valve through the balance element and the first elastic element. When the movable arm swings upward, the balance element initially floats upward, and the first elastic element extends until it returns to its initial length. At this point, the balance element stops floating, the first elastic element is not stretched, and the elastic force is not released outward. The exhaust valve only needs to overcome the weight of the pressure relief valve and the movable arm, experiencing less resistance. Therefore, it is easier for the exhaust valve to float upward under the propulsion of the airflow inside the pot, enabling the exhaust port to reach its maximum opening and improving exhaust efficiency.

[0012] The balancing component includes a mating ring and an upwardly protruding support portion located on one side of the mating ring. The mating ring is sleeved on the outside of the valve stem, and the support portion is used to support the transmission section.

[0013] In this design, a sleeve is fitted around the outer circumference of the valve stem, allowing the valve stem to guide the movement of the balancing component. This ensures the balancing component can only move up and down along the valve stem, improving movement reliability and stabilizing the direction of the downward pressure on the first elastic component. The upward-protruding support section cooperates with the transmission section for transmission, ensuring the downward pressure from the transmission section on the balancing component is applied more stably. Furthermore, when the first elastic component returns to its initial length, it will not be further stretched. Therefore, when the movable arm is rotated upwards to its final position, the first elastic component will not release its elastic force outwards, allowing the exhaust valve to float upwards to the maximum extent and open the exhaust port.

[0014] The balancing components also include guide ribs, and the pot lid is provided with vertically extending guide slides, with the guide ribs cooperating with the guide slides.

[0015] In this design, the guide ribs cooperate with the vertically extending guide slides to further improve the motion reliability of the balance component, ensuring that it can only reciprocate in the vertical direction, thus preventing the balance component from tilting due to the eccentricity of the balance component support and the gap with the valve stem.

[0016] The exhaust valve includes a valve body and a second elastic element. The second elastic element is used to apply an upward force to the valve body to open the exhaust port. The elastic modulus of the second elastic element is less than that of the first elastic element.

[0017] In this design, a second elastic element applies an upward thrust to the valve body, allowing the exhaust valve to open its vent promptly when the movable arm swings upward, under the action of the second elastic element. This also reduces the possibility of the valve body sticking to the lid and blocking the vent. Specifically, when the valve body moves downward to block the vent, the second elastic element is compressed. Since the elastic modulus of the first elastic element is greater than that of the second, the pressure-limiting valve can firmly press the valve body down under the elastic force of the first elastic element, thus blocking the vent. When the movable arm rotates upward, the pressure-limiting valve loses its pressure on the valve body, and the first elastic element no longer releases its elastic force. Therefore, the valve body can move upward under the action of the second elastic element to open the vent. During this process, the valve body does not need to overcome the elastic force of the first elastic element, allowing it to float to the highest point and maximize the vent opening.

[0018] The pressure relief valve includes a valve stem and a stop portion located at the top of the valve stem. The transmission section has a mating port, which is fitted around the outer periphery of the valve stem. The stop portion is located above the mating port and can mate with the stop portion of the transmission section.

[0019] In this design, there is space between the valve stem and the stop for accommodating the transmission section. After the transmission section is assembled with the pressure relief valve, it is stopped both vertically. Therefore, when it swings up or down, it can drive the pressure relief valve to move up or down synchronously.

[0020] The drive section extends downward at an angle to form a drive ramp for engaging with the push rod of the solenoid valve, and the transmission section extends horizontally to engage with the pressure relief valve.

[0021] In this solution, the horizontal movement of the push rod can be converted into the up-and-down swing of the movable arm by using the driving inclined plane, thereby enabling the solenoid valve to be arranged horizontally, making more reasonable use of the internal space of the pot lid, saving space in the height direction of the pot lid, and making the pot lid lighter and thinner overall.

[0022] The top of the pot lid is provided with a vent, which is staggered with the exhaust port to form a horizontally extending exhaust channel between them. The top wall of the exhaust channel is provided with an installation port, and a sealing element is provided at the installation port to close the installation port. The pressure relief valve is located above the sealing element to press the exhaust valve through the sealing element.

[0023] In this design, the air outlet and exhaust port are staggered vertically, creating a horizontally extending exhaust channel. This lengthens the path of the exhaust gas, reducing the impact force and kinetic energy of the airflow. This causes bubbles and liquid bubbles carried in the gas to burst and separate within the exhaust channel, reducing the risk of liquid overflowing from the air outlet. Furthermore, as the airflow rushes upwards from the exhaust port into the exhaust channel, it collides with the top wall of the channel, further accelerating bubble bursting and improving the anti-overflow effect. The pressure relief valve does not directly contact the exhaust valve but rather through a sealing element. This seal completely prevents the installation port from entering the lid during exhaust, allowing airflow to flow only within the exhaust channel. This reduces the possibility of leakage and avoids the risk of hot, humid airflow contacting the electrical components inside the lid, thus extending their lifespan.

[0024] The seal has a fixed portion for cooperating with a pressure relief valve, and a deformable portion surrounding the outer periphery of the fixed portion. The fixed portion covers the lower end of the pressure relief valve, and the thickness of the deformable portion is less than the thickness of the fixed portion; or, the deformable portion is provided with pleats.

[0025] In this design, the fixing part is fixedly connected to the pressure relief valve, making the assembly of the pressure relief valve and the seal more stable. This allows the pressure relief valve to be reliably pressed down by the fixing part, preventing slippage between the pressure relief valve and the seal during the downward movement. Furthermore, since the pressure relief valve can move up and down, the seal is pulled or retracted during this movement. Therefore, the seal needs to have good deformation capacity to maintain positional stability and reliable sealing of the mounting port during the pressure relief valve's movement. By reducing the thickness of the deformation part or adding pleats to the deformation part, it is easier for the deformation part to deform, reducing the resistance encountered by the pressure relief valve during downward movement. This allows for more stable pressure on the exhaust valve and also reduces the possibility of the seal breaking due to being pulled.

[0026] The exhaust valve includes a valve body located above the exhaust port, and an anti-blocking post is provided at the lower end of the valve body. When the valve body moves downward, the anti-blocking post extends into the exhaust port.

[0027] In this design, the vent is blocked when the valve body descends and opened when it rises. During the descent, the anti-blocking column extends into the vent, pushing away food residue, bubbles, and other debris, thus achieving a self-cleaning effect and keeping the vent clean and unobstructed. This ensures that the vent remains unobstructed when the valve body rises, allowing for efficient airflow, shortening venting time, and preventing impurities from blocking the vent and causing poor or no venting. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a cross-sectional view of a cooking utensil according to one embodiment of the present invention; Figure 2 This is a cross-sectional view of a portion of the pot lid according to one embodiment of the present invention; Figure 3 This is a cross-sectional view of a portion of the pot lid according to another embodiment of the present invention, wherein the push rod of the solenoid valve is in an extended state. Figure 4 for Figure 3 A cross-sectional view of the pot lid area with the push rod of the solenoid valve retracted. Figure 5 for Figure 3 A cross-sectional view of the lid section with the exhaust valve in the floating state; Figure 6 This is an exploded view of the pot lid structure according to one embodiment of the present invention; Figure 7 This is a schematic diagram of the balancing component according to one embodiment of the present invention.

[0029] in: 1. Pot body; 2. Pot lid; 21. Exhaust port; 22. Exhaust valve; 221. Valve body; 222. Second elastic element; 223. Anti-clogging column; 23. Solenoid valve; 231. Push rod; 24. Air outlet; 25. Exhaust channel; 26. Guide slide; 261. Limiting rib; 27. Mounting bracket; 3. Drive lever; 31. Connecting part; 32. Movable arm; 321. Drive section; 322. Transmission section; 323. Mating joint; 4. Pressure relief valve; 41. First elastic element; 42. Valve stem; 43. Stop part; 44. Mounting rib; 5. Sealing element; 51. Fixing part; 52. Deformation part; 6. Balancing component; 61. Fitting ring; 62. Support part; 63. Guide rib; 631. Vertical extension section; 632. Inclined extension section. Detailed Implementation

[0030] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0032] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] like Figures 1 to 3As shown, a pressure cooking appliance includes a pot body 1 and a lid 2. The lid 2 has a vent 21 communicating with the inside of the pot, and a vent valve 22 is provided at the vent 21. The vent valve 22 can float up and down under the action of gas inside the pot. The lid 2 has a pressure limiting valve 4 above the vent valve 22, which can press the vent valve 22 to close the vent 21. The lid 2 also has a solenoid valve 23 and a drive lever 3. The solenoid valve 23 is located on the lateral side of the pressure limiting valve 4, and the drive lever 3 is rotatably connected to the lid 2. The connecting part 31 and the movable arm 32 located on one side of the connecting part 31 and rotatable around the connecting part 31 are provided. The connecting part 31 is located on the side of the pressure relief valve 4 away from the solenoid valve 23. The movable arm 32 has a drive section 321 for cooperating with the solenoid valve 23 and a transmission section 322 that acts on the pressure relief valve 4. When the push rod 231 of the solenoid valve 23 extends, the transmission section 322 presses the pressure relief valve 4 to lower the pressure exhaust valve 22. When the push rod 231 of the solenoid valve 23 retracts, the transmission section 322 loses pressure on the pressure relief valve 4.

[0036] This invention does not limit the specific type of pressure cooking appliance; it can be a low-pressure cooking appliance or a high-pressure cooking appliance, as long as it can cook at a pressure higher than the standard atmospheric pressure.

[0037] In this invention, the connecting part 31 of the drive lever 3 is located on the side of the pressure limiting valve 4 away from the solenoid valve 23, so that the solenoid valve 23 and the pressure limiting valve 4 are both located on the same side of the connecting part 31. The drive lever 3, through the movable arm 32 that swings on one side, cooperates with both the solenoid valve 23 and the pressure limiting valve 4. Compared with the lever scheme that swings on both sides, this increases the length of the lever arm between the connecting part 31 and the solenoid valve 23, changes the direction of the thrust transmission, and amplifies the thrust effect. This makes it easier for the push rod 231 of the solenoid valve 23 to drive the movable arm 32 to move, thereby reducing the power of the solenoid valve 23. This not only saves on component costs but also reduces the heat generated by the solenoid valve 23 during operation.

[0038] Furthermore, since the drive section 321 and the transmission section 322 are located on the same side of the connecting part 31, when the solenoid valve 23 is energized, the push rod 231 pushes the drive section 321 to swing downward, and the transmission section 322 also moves downward, thereby pressing down on the pressure relief valve 4, causing it to abut against the exhaust valve 22 and block the exhaust port 21. When the solenoid valve 23 is de-energized, the push rod 231 retracts, the drive section 321 swings upward, and the transmission section 322 also swings upward, losing its pressure on the pressure relief valve 4. At this time, the exhaust valve 22 can be pushed down by the airflow inside the pot, lifting the pressure relief valve 4 to exhaust air. This achieves the condition that the exhaust port 21 is normally open when the solenoid valve 23 is de-energized. This not only retains the low-cost solenoid valve 23 but also eliminates the need for components such as check valves, improving operational reliability, saving costs, and enhancing the user experience.

[0039] Preferably, such as Figure 2 , Figure 3 As shown, a first elastic element 41 is provided between the transmission section 322 and the pressure relief valve 4, and the transmission section 322 drives the pressure relief valve 4 through the first elastic element 41. Specifically, in one embodiment, the transmission section 322 is sleeved on the outside of the pressure relief valve 4, and the pressure relief valve 4 is provided with a stop portion 43 above the transmission section 322. When the movable arm 32 swings downward, the transmission section 322 presses the first elastic element 41, and the elastic force of the first elastic element 41 applies downward pressure to the pressure relief valve 4 to make it move. When the movable arm 32 swings upward, the first elastic element 41 is stretched, and the transmission section 322 abuts against the stop portion 43 above, thereby driving the pressure relief valve 4 to float upward.

[0040] In this implementation, the presence of the first elastic element 41 may affect the movement of the exhaust valve 22. Specifically, as... Figure 2 As shown, when the movable arm 32 swings upward, the first elastic element 41 is stretched. When the exhaust valve 22 floats upward, it needs to overcome not only the gravity of the movable arm 32 and the pressure relief valve 4, but also the elastic force of the first elastic element 41. Since the elastic force of the first elastic element 41 is relatively large, it will cause the exhaust valve 22 to fail to float upward to open the exhaust port 21, or the upward movement of the exhaust valve 22 will be small and unable to reach the maximum opening.

[0041] As a preferred implementation method, such as Figures 3 to 5 As shown, the pot lid 2 is also provided with a balance member 6. The pressure relief valve 4 includes a valve stem 42 and a mounting rib 44 protruding outward from the outer periphery of the valve stem 42. The balance member 6 is located above the mounting rib 44 and can move up and down. A first elastic member 41 is provided between the balance member 6 and the mounting rib 44. The transmission section 322 presses the pressure relief valve 4 through the balance member 6.

[0042] By setting the balance member 6, the first elastic member 41 is located between the balance member 6 and the mounting rib 44, so that the transmission section 322 transmits the downward pressure of the pressure relief valve 4 through the balance member 6 and the first elastic member 41. When the movable arm 32 swings upward, the balance member 6 initially floats up due to the loss of the downward pressure of the transmission section 322, causing the first elastic member 41 to gradually extend from the compressed state until the first elastic member 41 returns to its initial length. At this time, the balance member 6 stops floating, and the first elastic member 41 will not be stretched further. Therefore, the elastic force will not be released outward. At this time, the exhaust valve 22 only needs to overcome the weight of the pressure relief valve 4 and the movable arm 32 to float up. The resistance it encounters is small, so it is easier to complete the floating under the push of the airflow in the pot, and the exhaust port 21 can reach the maximum opening, improving the exhaust efficiency.

[0043] Preferably, such as Figure 3 , Figure 6 , Figure 7As shown, the balancer 6 includes a mating ring 61 and a support portion 62 located on one side of the mating ring 61 and protruding upward. The mating ring 61 is sleeved on the outside of the valve stem 42, and the support portion 62 is used to support the transmission section 322.

[0044] The sleeve 61 is fitted around the outer circumference of the valve stem 42, allowing the valve stem 42 to guide the movement of the balancer 6, ensuring that the balancer 6 can only move up and down along the valve stem 42, thus improving the reliability of the movement and making the direction of the downward pressure on the first elastic member 41 more stable. The support part 62 protrudes upward to cooperate with the transmission section 322 for transmission, allowing the downward pressure of the transmission section 322 on the balancer 6 to act more stably on the balancer 6, and preventing the first elastic member 41 from being further stretched when it returns to its initial length. This ensures that when the movable arm 32 is rotated upward to its final position, the first elastic member 41 will not release its elastic force outward, allowing the exhaust valve 22 to float upward to the maximum extent and open the exhaust port 21.

[0045] Furthermore, such as Figures 3 to 7 As shown, the balance component 6 also includes a guide rib 63, and the pot lid 2 is provided with a vertically extending guide slide 26, with the guide rib 63 cooperating with the guide slide 26.

[0046] The guide rib 63 cooperates with the vertically extending guide slide 26 to further improve the motion reliability of the balancer 6, so that it can only reciprocate in the vertical direction, and prevent the balancer 6 from tilting due to the eccentricity of the support part 62 of the balancer 6 and the gap with the valve stem 42.

[0047] Specifically, the guide rib 63 and the support portion 62 are integrally formed. In a preferred embodiment, such as... Figure 7 As shown, a raised rib is provided on one side of the fitting ring 61. The raised rib first extends upward to form a support part 62, and then bends downward and extends downward to form a guide rib 63.

[0048] Furthermore, such as Figure 6 , Figure 7 As shown, the guide rib 63 includes a vertical extension section 631 and an inclined extension section 632 located above the vertical extension section 631. A limiting rib 261 for cooperating with the inclined extension section 632 is provided on one side of the guide slide 26. The surface of the limiting rib 261 is provided with an inclined surface adapted to the inclined extension section 632.

[0049] Specifically, such as Figure 6 As shown, the pot lid 2 is provided with a mounting bracket 27 for installing the pressure relief valve 4, and the guide slide 26 is provided on the mounting bracket 27.

[0050] In a preferred embodiment, such as Figures 3 to 5As shown, the exhaust valve 22 includes a valve body 221 and a second elastic element 222. The second elastic element 222 is used to apply an upward force to the valve body 221 to open the exhaust port 21. The elastic modulus of the second elastic element 222 is less than the elastic modulus of the first elastic element 41.

[0051] By setting the second elastic element 222 to apply an upward thrust to the valve body 221, the exhaust valve 22 can open the exhaust port 21 in a timely manner under the action of the second elastic element 222 when the movable arm 32 swings upward. This also reduces the possibility of the valve body 221 sticking to the pot lid 2 and blocking the exhaust port 21. Specifically, as... Figure 3 As shown, when the push rod 231 of the solenoid valve 23 drives the movable arm 32 to swing downward, the transmission section 322 applies downward pressure to the balance member 6, causing the balance member 6 to compress the first elastic member 41. Under the action of the elastic force, the first elastic member 41 presses down on the pressure limiting valve 4, causing the pressure limiting valve 4 to press the valve body 221 down and block the exhaust port 21. At this time, the second elastic member 222 is compressed. Since the elastic modulus of the first elastic member 41 is greater than that of the second elastic member 222, the pressure limiting valve 4 can firmly press the valve body 221 under the action of the elastic force of the first elastic member 41, causing the valve body 221 to block the exhaust port 21. When the solenoid valve 23 stops working, the push rod 231 loses its drive on the movable arm 32, and the movable arm 32 rotates upward, as... Figure 4 As shown, the balance member 6 floats upward, causing the first elastic member 41 to extend from its compressed state to its initial state. Further, as... Figure 5 As shown, when the first elastic element 41 is in the initial state, the balance element 6 will no longer continue to move upward, and the first elastic element 41 will no longer be stretched or compressed, but will remain in the initial state, so that the pressure relief valve 4 loses its pressure on the valve body 221, and the first elastic element 41 no longer releases elastic force outward. Therefore, the valve body 221 can move upward under the action of the second elastic element 222 to open the exhaust port 21. During this process, the valve body 221 does not need to overcome the elastic force of the first elastic element 41, so it can float to the highest point and make the exhaust port 21 reach the maximum opening.

[0052] Preferably, such as Figure 3 , Figure 6 As shown, the pressure relief valve 4 includes a valve stem 42 and a stop portion 43 disposed on the top of the valve stem 42. The transmission section 322 has a mating port 323, which is sleeved on the outer periphery of the valve stem 42. The stop portion 43 is located above the mating port 323 and can be mated with the stop portion of the transmission section 322.

[0053] There is a space between the valve stem 42 and the stop part 43 for accommodating the transmission section 322. After the transmission section 322 is assembled with the pressure relief valve 4, it is stopped up and down. Therefore, when it swings up or down, it can drive the pressure relief valve 4 to move up or down synchronously.

[0054] Preferably, a screw is fixed to the top of the valve stem 42, the head of the screw forming a stop portion 43, and the mating port 323 is an oblong hole. During assembly, the mating port 323 is first aligned with the valve stem 42, and then the screw is tightened to the valve stem 42 from above, limiting the transmission section 322 between the two, so that the screw head and the transmission section 322 form a stop.

[0055] Preferably, such as Figures 3 to 6 As shown, the drive section 321 extends downward at an angle to form a drive ramp for engaging with the push rod 231 of the solenoid valve 23, and the transmission section 322 extends horizontally to engage with the pressure relief valve 4.

[0056] The horizontal movement of the push rod 231 can be converted into the up-and-down swing of the movable arm 32 by using the driving inclined plane, so that the solenoid valve 23 can be arranged horizontally, making more reasonable use of the internal space of the pot lid 2, saving space in the height direction of the pot lid 2, and making the pot lid 2 thinner and lighter overall.

[0057] As a preferred embodiment of this utility model, such as Figure 1 , Figure 3 As shown, the top of the pot lid 2 is provided with a vent 24. The vent 24 and the exhaust port 21 are staggered vertically to form a horizontally extending exhaust channel 25 between them. The top wall of the exhaust channel 25 is provided with an installation port. A sealing element 5 is provided at the installation port to close the installation port. The pressure relief valve 4 is located above the sealing element 5 to press the exhaust valve 22 through the sealing element 5.

[0058] The vertically staggered air outlet 24 and exhaust port 21 create a horizontally extending exhaust channel 25 between them. This lengthens the path of the gas during exhaust, helping to reduce the impact force and kinetic energy of the airflow, causing bubbles and liquid bubbles carried in the gas to burst and complete gas-liquid separation within the exhaust channel 25, thus reducing the risk of liquid spraying out of the air outlet 24 and causing overflow. Furthermore, when the airflow rushes upward from the exhaust port 21 into the exhaust channel 25, it collides with the top wall of the exhaust channel 25, further accelerating bubble bursting and improving the anti-overflow effect. The pressure relief valve 4 does not directly contact the exhaust valve 22, but rather through a sealing element 5, ensuring the mounting opening is completely sealed. During exhaust, the airflow will not enter the interior of the lid 2 through the mounting opening, but will only flow within the exhaust channel 25, thereby reducing the possibility of leakage and preventing the risk of hot and humid airflow contacting the internal electrical components of the lid 2, thus extending the service life of the internal electrical components.

[0059] Understandably, the airflow inside the pot enters the exhaust channel 25 through the exhaust port 21 and then exits from the exhaust port 24.

[0060] Furthermore, such as Figure 3 , Figure 6As shown, the seal 5 has a fixing part 51 for cooperating with the pressure relief valve 4, and a deformable part 52 surrounding the outer periphery of the fixing part 51. The fixing part 51 covers the lower end of the pressure relief valve 4.

[0061] The fixing part 51 is fixedly connected to the pressure relief valve 4, which makes the assembly of the pressure relief valve 4 and the sealing element 5 more stable, so that the exhaust valve 22 can be reliably pressed through the fixing part 51, and the pressure relief valve 4 can avoid slipping with the sealing element 5 during the sinking process.

[0062] Specifically, such as Figure 3 As shown, one of the outer peripheral side of the pressure relief valve 4 and the fixing part 51 is provided with a fixing groove, and the other is provided with a fixing rib. The two are engaged to make the fixing part 51 cover the bottom and peripheral side of the pressure relief valve 4.

[0063] This embodiment does not limit the structure of the deformable part 52. Specifically, in one embodiment, such as Figure 3 As shown, the thickness of the deformable portion 52 is less than the thickness of the fixed portion 51. In another embodiment, the deformable portion 52 is provided with pleats.

[0064] Since the pressure relief valve 4 can move up and down, the seal 5 is stretched or retracted during its movement. Therefore, the seal 5 needs to have good deformation capacity to maintain positional stability and reliable sealing of the mounting port during the movement of the pressure relief valve 4. By reducing the thickness of the deformation part 52 or by adding pleats to the deformation part 52, the deformation part 52 can be made to deform more easily when the pressure relief valve 4 moves. This reduces the resistance encountered by the pressure relief valve 4 when it sinks, making it more stable in pressing the exhaust valve 22, and also reduces the possibility of the seal 5 being pulled and broken.

[0065] Preferably, such as Figure 3 As shown, the exhaust valve 22 includes a valve body 221 located above the exhaust port 21. An anti-blocking post 223 is provided at the lower end of the valve body 221. When the valve body 221 moves downward, the anti-blocking post 223 extends into the exhaust port 21.

[0066] When the valve body 221 moves downward, it blocks the exhaust port 21; when the valve body 221 rises, it opens the exhaust port 21. During the process of the valve body 221 sinking, the anti-blocking column 223 extends into the exhaust port 21, which can push away food residue, liquid bubbles, etc. located at the exhaust port 21, achieving a self-cleaning effect at the exhaust port 21, keeping the exhaust port 21 clean and unobstructed. As a result, when the valve body 221 rises, the exhaust port 21 remains unobstructed, allowing the airflow to be discharged with high efficiency, shortening the exhaust time, and avoiding the problem of impurities blocking the exhaust port 21, which would lead to poor exhaust or inability to exhaust.

[0067] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0068] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0069] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A pressure cooking appliance, comprising a pot body and a lid, wherein the lid is provided with a vent communicating with the interior of the pot, and a vent valve is provided at the vent, the vent valve being able to float up and down under the action of gas inside the pot, characterized in that, The pot lid is equipped with a pressure limiting valve above the exhaust valve. The pressure limiting valve can press the exhaust valve to close the exhaust port. The pot lid is also equipped with a solenoid valve and a drive lever. The solenoid valve is located on the lateral side of the pressure limiting valve. The drive lever has a connecting part that is rotatably connected to the pot lid and a movable arm located on one side of the connecting part that can rotate around the connecting part. The connecting part is located on the side of the pressure limiting valve away from the solenoid valve. The movable arm has a drive section for cooperating with the solenoid valve and a transmission section that acts on the pressure limiting valve. When the push rod of the solenoid valve extends, the transmission section presses the pressure limiting valve to press down the exhaust valve. When the push rod of the solenoid valve retracts, the transmission section loses pressure on the pressure limiting valve.

2. The pressure cooking appliance according to claim 1, characterized in that, The pot lid is also provided with a balancing component. The pressure limiting valve includes a valve stem and a mounting rib protruding outward from the outer periphery of the valve stem. The balancing component is located above the mounting rib and can move up and down. A first elastic element is provided between the balancing component and the mounting rib. The transmission section presses the pressure limiting valve through the balancing component.

3. The pressure cooking appliance according to claim 2, characterized in that, The balancing component includes a mating ring and an upwardly protruding support portion located on one side of the mating ring. The mating ring is sleeved on the outside of the valve stem, and the support portion is used to support the transmission section.

4. The pressure cooking appliance according to claim 2, characterized in that, The balancing component also includes guide ribs, and the pot lid is provided with vertically extending guide slides, with the guide ribs cooperating with the guide slides.

5. The pressure cooking appliance according to claim 2, characterized in that, The exhaust valve includes a valve body and a second elastic element. The second elastic element is used to apply an upward force to the valve body to open the exhaust port. The elastic modulus of the second elastic element is less than that of the first elastic element.

6. The pressure cooking appliance according to claim 1, characterized in that, The pressure relief valve includes a valve stem and a stop portion disposed at the top of the valve stem. The transmission section has a mating port, which is sleeved on the outer periphery of the valve stem. The stop portion is located above the mating port and can mate with the stop portion of the transmission section.

7. The pressure cooking appliance according to claim 1, characterized in that, The drive section extends downward at an angle to form a drive ramp for engaging with the push rod of the solenoid valve, and the transmission section extends horizontally to engage with the pressure relief valve.

8. The pressure cooking appliance according to claim 1, characterized in that, The top of the pot lid is provided with a vent, which is staggered vertically with the exhaust port to form a horizontally extending exhaust channel between them. The top wall of the exhaust channel is provided with a mounting opening, and a sealing element is provided at the mounting opening to close the mounting opening. The pressure relief valve is located above the sealing element to press the exhaust valve through the sealing element.

9. The pressure cooking appliance according to claim 8, characterized in that, The seal has a fixing portion for cooperating with the pressure relief valve, and a deformable portion surrounding the outer periphery of the fixing portion. The fixing portion covers the lower end of the pressure relief valve, and the thickness of the deformable portion is less than the thickness of the fixing portion; or, the deformable portion is provided with pleats.

10. The pressure cooking appliance according to claim 1, characterized in that, The exhaust valve includes a valve body located above the exhaust port, and an anti-blocking post is provided at the lower end of the valve body. When the valve body moves downward, the anti-blocking post extends into the exhaust port.

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