Pressure cooking utensil

Abstract

The utility model discloses a pressure cooking utensil which comprises a pot body and a pot cover, the pot cover and the pot body are matched to define a cooking cavity, the pot cover is provided with a pressure detection assembly, the pressure detection assembly comprises a body and a sensor, and the body is provided with a protection cavity communicated with the cooking cavity and a detection cavity communicated with the sensor. The buffering cavity is communicated between the protection cavity and the detection cavity, the cross sectional area of the protection cavity is larger than that of the buffering cavity, the cross sectional area of the buffering cavity is not smaller than that of the detection cavity, and at least one layer of filtering piece is arranged between the buffering cavity and the cooking cavity. The size of the protection cavity is large, then high-pressure gas enters the protection cavity and then is subjected to first-stage buffering, the gas stays in the protection cavity for a short time, the gas pressure value tends to be stable, similarly, the buffering cavity can play a second-stage buffering role on the gas, and through two times of buffering, on the premise that it is guaranteed that the gas pressure value measured by the sensor is accurate, the gas pressure value can be accurately measured. The detection data of the sensor is more accurate and reliable, and the large fluctuation is avoided.

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] The pressure detection device is an essential component of pressure cooking appliances. It is used to detect the air pressure in the cooking chamber in real time, which facilitates pressure measurement and precise pressure control in pressure cooking appliances.

[0003] Pressure detection devices generally have two structural types. One type has two internal chambers separated by a flexible diaphragm. The pressure sensor is located in one chamber, while the other chamber connects to the cooking cavity. The diaphragm isolates the high-pressure gas in the cooking cavity from the pressure sensor. When the gas pressure in the chamber connected to the cooking cavity increases, it compresses the diaphragm, causing it to deform and compress the air in the chamber containing the pressure sensor, increasing the pressure there and transmitting the pressure signal to the sensor. With this structure, as the pressure in the cooking cavity continuously increases, the deformation of the diaphragm also continuously increases. Since the diaphragm is elastic, some of the pressure is offset by the elastic force generated by the diaphragm deformation, resulting in inaccurate pressure detection. Furthermore, excessively high gas pressure in the cooking cavity can easily cause the diaphragm to rupture. Additionally, the diaphragm ring is prone to oxidation and hardening during repeated high-pressure cycles, further reducing measurement accuracy and increasing the risk of diaphragm rupture, thus shortening the lifespan of the pressure detection device.

[0004] Another type of pressure detection device has an internal detection channel, allowing the pressure sensor to directly connect to the cooking cavity and thus directly detect the air pressure within the cooking cavity. However, the cross-sectional area of ​​the detection channel is often small. On one hand, the air pressure increases further after entering the detection channel, leading to inaccurate pressure readings from the pressure sensor and an inability to accurately reflect the air pressure inside the cooking cavity. On the other hand, because the high-pressure air inside the cooking cavity directly acts on the pressure sensor, the measured pressure value often fluctuates significantly, resulting in momentary instances of excessively high pressure. This can cause the pressure cooker to make incorrect pressure control decisions, similarly affecting the accuracy of pressure measurement and control.

[0005] In addition, liquids and foams in the cooking cavity can also flow directly into the detection channel, and then deposit on the pressure sensor and the inner wall of the detection channel, further increasing the risk of pressure sensor inaccuracy or even failure. Utility Model Content

[0006] This invention provides a pressure cooking appliance to solve the problems of inaccurate pressure measurement and control by the pressure detection device, the occurrence of instantaneous excessive pressure during cooking, and the easy contamination of the pressure sensor.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A pressure cooking appliance includes a pot body and a pot lid, which together form a cooking chamber. The pot lid is provided with a pressure detection component, which includes a body and a sensor. The body has a protective chamber communicating with the cooking chamber, a detection chamber communicating with the sensor, and a buffer chamber communicating between the protective chamber and the detection chamber. The cross-sectional area of ​​the protective chamber is larger than that of the buffer chamber, and the cross-sectional area of ​​the buffer chamber is not less than that of the detection chamber. At least one filter is provided between the buffer chamber and the cooking chamber.

[0009] The pressure cooking appliance of this utility model also has the following additional technical features:

[0010] The main body includes a valve body, a valve seat, and a seal. The buffer chamber is located inside the valve body or valve seat. The seal has a mating part. The sensor extends into the interior of the mating part, and the detection chamber is located inside the mating part.

[0011] The valve seat includes a seat body and a mating post protruding toward the sensor. A buffer cavity is located inside the mating post. The valve body is provided with an opening for the mating post to pass through. The seal has a first sealing part and a second sealing part located below the mating part. The first sealing part is sleeved on the outer periphery of the mating post, and the second sealing part is located between the seat body and the valve body.

[0012] The seat and / or valve body are provided with a receiving groove, the second sealing part is located in the receiving groove, and the valve body or seat is provided with a sealing rib protruding towards the receiving groove, the sealing rib abutting against the second sealing part.

[0013] The main body includes a housing, a fixing component, and a sealing component. The protective cavity is located inside the fixing component. The housing and the fixing component clamp and fix the sealing component. The buffer cavity and the detection cavity are both located inside the sealing component.

[0014] The seal has a mating section that forms a buffer cavity. The housing has an opening through which the mating section passes. The outer periphery of the mating section is provided with an abutting flange. The fixing member and the housing clamp and fix the abutting flange.

[0015] The pot lid includes a lid body and an inner lid. The main body includes a shell, a fixing component, and a sealing component. The shell is fixed to the lid body, the fixing component is detachably fixed to the shell, and the fixing component and the shell clamp and fix the inner lid.

[0016] The lower end of the housing has a downward protruding rib. The fastener includes a fixing part that extends into the rib and an abutting part located below the fixing part. The inner wall of the rib is provided with a first thread, and the outer wall of the fixing part is provided with a second thread that mates with the first thread. The abutting part clamps the inner cover with the lower end face of the rib.

[0017] The pressure detection assembly also includes a seal, with the detection chamber located inside the seal, which encloses the outer periphery of the sensor.

[0018] The main body includes a shell, a fixing component, and a sealing component. The protective cavity is located inside the fixing component, and the shell and the fixing component clamp and fix the filter element; or, the filter element and the fixing component are integrally formed structures.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0020] 1. In this invention, the sensor is directly connected to the cooking cavity through a detection cavity, a buffer cavity, and a protective cavity, allowing the high-pressure gas in the cooking cavity to directly act on the sensor, thereby enabling the sensor to directly measure the gas pressure inside the pot. Simultaneously, the cross-sectional area of ​​the protective cavity is larger than that of the buffer cavity, resulting in a larger volume of the protective cavity. This allows the high-pressure gas entering the cooking cavity to undergo a primary buffering process, with the gas briefly residing within the protective cavity to stabilize the pressure value. Similarly, the cross-sectional area of ​​the buffer cavity is not smaller than that of the detection cavity, enabling the buffer cavity to provide a secondary buffering effect for the gas. Through these two buffering processes, while ensuring the accuracy of the gas pressure measured by the sensor, the gas pressure value is made more stable, reducing fluctuations. When this pressure reaches the sensor, the sensor's detection data is more accurate and reliable, without significant fluctuations, thus improving detection stability.

[0021] In addition, at least one filter is installed between the buffer chamber and the cooking chamber. This filter can block large food particles and large air bubbles, causing them to fall back into the cooking chamber under gravity after colliding with the filter, while the gas can continue to rise into the buffer chamber. Simultaneously, the filter also plays a role in breaking bubbles. When bubbles pass through the pores of the filter, they are compressed by the inner wall of the pores, which helps them burst, separating the liquid and gas inside the bubbles, with the liquid falling back down. This ensures the cleanliness of the buffer chamber, detection chamber, and sensor, reducing the user's cleaning burden while maintaining high detection accuracy of the sensor.

[0022] Furthermore, the filter element can also divert airflow, allowing the airflow to pass through the filter element more dispersedly and act on the sensor. This makes the contact between the gas and the sensor more uniform, appropriately reducing the impact force of the gas, thereby reducing the risk of the sensor being damaged by a large impact.

[0023] 2. In a preferred embodiment of this utility model, the valve seat includes a seat body and a mating post protruding towards the sensor. A buffer cavity is located inside the mating post. The valve body has an opening through which the mating post passes. The sealing element has a first sealing part and a second sealing part located below the mating part. The first sealing part is sleeved on the outer periphery of the mating post, and the second sealing part is located between the seat body and the valve body. The first sealing part is sleeved on the outer periphery of the mating post, the mating part is located above the first sealing part, and the detection cavity is located inside the mating part, so that the detection cavity and the buffer cavity are vertically connected and the sensor extends into the detection cavity, making the three coaxial. This allows the gas to flow more smoothly from the buffer cavity to the detection cavity, thus enabling it to be detected by the sensor more promptly and accurately, reducing pressure loss along the way, and improving detection sensitivity and accuracy. At the same time, the first sealing part can improve the sealing performance between the sealing element and the valve body and valve seat. Furthermore, the second sealing part is located between the valve body and the valve seat. It not only seals the vertical gap between the valve body and the valve seat, but is also clamped and fixed by the two, making the position of the seal more stable. When the seal is pushed upward by high-pressure gas, the second sealing part is clamped by the valve body and the valve seat, and the direction of the clamping force is parallel to the pushing force of the gas on the seal. Therefore, it can effectively prevent the seal from loosening or shifting, and ensure reliable sealing.

[0024] 3. In a preferred embodiment of this utility model, the main body includes a housing, a fixing member, and a sealing member. The protective cavity is located inside the fixing member, and the housing and fixing member clamp and fix the sealing member. The buffer cavity and the detection cavity are both located inside the sealing member. The fact that both the buffer cavity and the detection cavity are located inside the sealing member makes the structural arrangement more concentrated, reduces the processing difficulty of each component of the pressure detection assembly, and saves costs. It also facilitates cleaning for the user; only the sealing member needs to be cleaned separately to clean both the buffer cavity and the detection cavity simultaneously.

[0025] 4. In a preferred embodiment of this utility model, the pot lid includes a lid body and an inner lid. The main body includes a shell, a fixing member, and a sealing member. The shell is fixed to the lid body, and the fixing member is detachably fixed to the shell. The fixing member and the shell clamp and fix the inner lid. By making the fixing member and the shell detachable, and clamping and fixing the inner lid, the inner lid is also detachable from the lid body. Since the inner lid is in direct contact with the cooking cavity, it is easily contaminated by the food in the pot. The detachable structure facilitates cleaning of the inner lid by the user. Specifically, the user can remove the fixing member from the shell, causing the inner lid to loosen and be removed directly. For fixing, after placing the inner lid in place, the fixing member is tightened to the shell, restoring the clamping of the inner lid and completing the installation of the inner lid. This not only facilitates the installation and removal of the inner lid, but also exposes the internal cavity of the shell after the fixing member is removed, making it convenient to clean at least one of the protective cavity, buffer cavity, and detection cavity.

[0026] 5. In a preferred embodiment of this utility model, the pressure detection assembly further includes a sealing element, with the detection chamber located inside the sealing element, which encloses the outer periphery of the sensor. The sealing element wraps around the sidewall of the sensor from its outer periphery. When the pressure inside the detection chamber is too high, the sealing element will be pushed outwards by the air pressure, creating a gap between the sealing element and the sensor sidewall. High-pressure gas can then escape through this gap, preventing the sensor from being subjected to high pressure and affecting detection accuracy or causing damage. Conversely, when the pressure inside the detection chamber does not meet the design requirements, the sealing element remains tightly fitted to the sensor sidewall, ensuring a good sealing effect. Attached Figure Description

[0027] 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:

[0028] Figure 1 This is a cross-sectional view of a pressure detection component according to one embodiment of the present invention;

[0029] Figure 2 for Figure 1 A magnified view of area A in the middle;

[0030] Figure 3 for Figure 1 A cross-sectional view of the pressure detection component from another perspective;

[0031] Figure 4 for Figure 1 Exploded view of the structure of the medium pressure detection component;

[0032] Figure 5 This is a cross-sectional view of the pressure detection component according to another embodiment of the present invention.

[0033] in:

[0034] 1. Main body; 11. Sealing element; 111. Mating part; 112. First sealing part; 113. Second sealing part; 114. Mating section; 115. Abutting flange; 12. Valve body; 13. Valve seat; 131. Mating post; 132. Surrounding rib; 133. First thread; 14. Protective cavity; 15. Buffer cavity; 16. Detection cavity; 17. Sealing rib; 18. Housing;

[0035] 2 sensors;

[0036] 3. Fastener; 31. Fixing part; 311. Second thread; 32. Abutting part; 33. Sealing ring;

[0037] 4. Fasteners;

[0038] 5. Pressing parts;

[0039] 6. Filter components. Detailed Implementation

[0040] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] like Figure 1 , Figure 3 , Figure 5As shown, a pressure cooking appliance includes a pot body and a pot lid. The pot lid and the pot body cooperate to form a cooking cavity. The pot lid is provided with a pressure detection component, which includes a body and a sensor 2. The body has a protective cavity 14 communicating with the cooking cavity, a detection cavity 16 communicating with the sensor 2, and a buffer cavity 15 communicating between the protective cavity 14 and the detection cavity 16. The cross-sectional area of ​​the protective cavity 14 is larger than the cross-sectional area of ​​the buffer cavity 15, and the cross-sectional area of ​​the buffer cavity 15 is not less than the cross-sectional area of ​​the detection cavity 16. At least one filter element 6 is provided between the buffer cavity 15 and the cooking cavity.

[0046] It should be noted that the filter element 6 has multiple filter holes. This invention does not limit the placement of the filter element 6; specifically, it can be positioned between the protective cavity 14 and the buffer cavity 15, i.e. Figure 5 The outlet end of the protective cavity 14 shown can also be as follows: Figure 1 The filter element 6 shown is located at the inlet end of the protective cavity 14, or it is multi-layered and spaced apart within the protective cavity 14.

[0047] In this invention, sensor 2 is directly connected to the cooking cavity via a detection cavity 16, a buffer cavity 15, and a protective cavity 14. This allows the high-pressure gas in the cooking cavity to directly act on sensor 2, enabling sensor 2 to directly measure the gas pressure inside the pot. Simultaneously, the cross-sectional area of ​​the protective cavity 14 is larger than that of the buffer cavity 15, resulting in a larger volume of protective cavity 14. This allows the high-pressure gas entering the protective cavity 14 to undergo a primary buffering process, with the gas briefly residing within the protective cavity 14 to stabilize the pressure value. Similarly, the cross-sectional area of ​​the buffer cavity 15 is not smaller than that of the detection cavity 16, allowing the buffer cavity 15 to provide a secondary buffering effect. Through these two buffering processes, while ensuring the accuracy of the gas pressure measured by sensor 2, the gas pressure value is made more stable, reducing fluctuations. When this pressure value comes into contact with sensor 2, the detection data from sensor 2 is more accurate and reliable, without significant fluctuations, thus improving detection stability.

[0048] In addition, at least one filter element 6 is provided between the buffer chamber 15 and the cooking chamber. The filter element 6 can block large food particles and large air bubbles, causing them to fall back into the cooking chamber under gravity after colliding with the filter element 6, while the gas can continue to rise into the buffer chamber 15. At the same time, the filter element 6 also plays a certain role in breaking bubbles. When bubbles pass through the holes of the filter element 6, they are squeezed by the inner wall of the holes, which helps the bubbles to break, thereby separating the liquid and gas inside the bubbles, and the liquid falls back. This ensures the cleanliness of the buffer chamber 15, the detection chamber 16, and the sensor 2, reducing the cleaning burden on the user and enabling the sensor 2 to maintain high detection accuracy.

[0049] Furthermore, the filter element 6 can also divert the airflow, allowing the airflow to pass through the filter element 6 more dispersedly and act on the sensor 2. This makes the contact between the gas and the sensor 2 more uniform and appropriately reduces the impact force of the gas, thereby reducing the risk of the sensor 2 being damaged by a large impact.

[0050] Preferably, such as Figure 1 As shown, the cross-sectional area of ​​the buffer cavity 15 is larger than that of the detection cavity 16. Of course, the cross-sectional area of ​​the buffer cavity 15 can also be the same as that of the detection cavity 16, which is not limited here.

[0051] It should be noted that the present invention does not limit the structure of the main body, which can be one of the following embodiments:

[0052] Implementation Method 1: In this implementation method, as follows Figure 1 , Figure 3 , Figure 4 As shown, the main body includes a valve body 12, a valve seat 13, and a seal 11. A buffer chamber 15 is located inside the valve body 12 or the valve seat 13. The seal 11 has a mating part 111. The sensor 2 extends into the mating part 111, and the detection chamber 16 is located inside the mating part 111.

[0053] In this embodiment, the buffer chamber 15 is located inside the valve body 12 or the valve seat 13, and the detection chamber 16 is located inside the seal 11, with the two connected in a mating manner. The sensor 2 extends into the mating part 111, not only achieving communication with the detection chamber 16, but also the sealing part wraps around the outside of the sensor 2, achieving a seal on the sensor 2. This sealing method can seal not only the lower end face of the sensor 2, but also the outer periphery of the sensor 2, thereby improving the sealing effect and preventing the seal from loosening and leaking when the sensor 2 is pushed by high-pressure gas.

[0054] Specifically, such as Figure 1 , Figure 3 As shown, the valve seat 13 includes a seat body and a mating post 131 protruding toward the sensor 2. The buffer cavity 15 is located inside the mating post 131. The valve body 12 is provided with an opening for the mating post 131 to pass through. The sealing member 11 has a first sealing part 112 and a second sealing part 113 located below the mating part 111. The first sealing part 112 is sleeved on the outer periphery of the mating post 131, and the second sealing part 113 is located between the seat body and the valve body 12.

[0055] The first sealing part 112 is sleeved on the outer periphery of the mating post 131, and the mating part 111 is located above the first sealing part 112. The detection cavity 16 is located inside the mating part 111, so that the detection cavity 16 and the buffer cavity 15 are vertically connected and connected. The sensor 2 extends into the detection cavity 16, making the three coaxial. This makes the gas flow more smoothly from the buffer cavity 15 to the detection cavity 16, so that it can be detected by the sensor 2 more timely and accurately, reducing pressure loss along the way and improving detection sensitivity and accuracy. At the same time, the first sealing part 112 can improve the sealing performance between the sealing element 11 and the valve body 12 and valve seat 13. Furthermore, the second sealing part 113 is located between the valve body 12 and the valve seat 13. It can not only seal the vertical gap between the valve body 12 and the valve seat 13, but also be clamped and fixed by the two, making the position of the sealing element 11 more stable. When the sealing element 11 is pushed upward by high pressure gas, since the second sealing part 113 is clamped by the valve body 12 and the valve seat 13, and the direction of the clamping force is parallel to the pushing force of the gas on the sealing element 11, it can effectively prevent the sealing element 11 from loosening or displacing, and ensure reliable sealing.

[0056] Of course, in other embodiments, the buffer chamber 15 may also be disposed in the valve body 12, which is not limited here.

[0057] Furthermore, such as Figure 1 , Figure 2 As shown, the seat and / or valve body 12 are provided with a receiving groove, the second sealing part 113 is located in the receiving groove, and the valve body 12 or the seat is provided with a sealing rib 17 protruding towards the receiving groove, the sealing rib 17 abutting against the second sealing part 113.

[0058] The sealing rib 17 protrudes toward the second sealing part 113 and abuts against the second sealing part 113, forming a local compression on the second sealing part 113, causing the second sealing part 113 to undergo local deformation, thereby further improving the clamping stability of the valve seat 13 and the valve body 12 on the second sealing part 113, as well as the sealing reliability.

[0059] Preferably, such as Figure 2 As shown, both the valve body 12 and the valve seat 13 are provided with sealing ribs 17. Of course, sealing ribs 17 can also be provided on either the valve seat 13 or the valve body 12. In addition, sealing ribs 17 can also be provided on the upper and / or lower sides of the second sealing part 113 so that they abut against the valve seat 13 and / or the valve body 12.

[0060] Specifically, such as Figure 1 As shown, the valve seat 13 and valve body 12 are respectively provided with fixing holes. Fasteners such as screws 4 are passed through these holes to secure the valve seat 13 and valve body 12 together, creating a clamping force on the second sealing part 113. Meanwhile, as... Figure 1 , Figure 3 , Figure 4 As shown, a pressing element 5 is also provided at the upper end of the sensor 2. The sensor 2 is disposed on the pressing element 5. The pressing element 5 is fastened to the valve body 12 so that the distance between the pressing element 5 and the sensor 2 and the valve body 12 remains fixed, thereby preventing the sensor 2 from moving under the push of high-pressure gas.

[0061] Implementation Method Two: In this implementation method, as follows Figure 5 As shown, the main body includes a housing 18, a fixing member 3, and a sealing member 11. The protective cavity 14 is located inside the fixing member 3. The housing 18 and the fixing member 3 clamp and fix the sealing member 11. The buffer cavity 15 and the detection cavity 16 are both located inside the sealing member 11.

[0062] Both the buffer chamber 15 and the detection chamber 16 are located inside the seal 11, which makes the structural arrangement more concentrated, reduces the processing difficulty of each component of the pressure detection assembly, and saves costs. It also makes it easier for users to clean; they only need to clean the seal 11 to clean the buffer chamber 15 and the detection chamber 16 at the same time.

[0063] Furthermore, such as Figure 5 As shown, the sealing member 11 has a mating section 114, which forms a buffer cavity 15. The housing 18 has an opening through which the mating section 114 passes. An abutting flange 115 is provided on the outer periphery of the mating section 114. The fixing member 3 and the housing 18 clamp and fix the abutting flange 115.

[0064] The fixing member 3 and the housing 18 clamp and abut against the flange 115 to fix the sealing member 11, making the position of the sealing member 11 more stable and reliable, and ensuring stability under high pressure.

[0065] Specifically, such as Figure 5 As shown, the bottom of the housing 18 is provided with a downward protruding rib 132, the fastener 3 extends into the rib 132, and the bottom wall of the housing 18 and the top wall of the fastener 3 are clamped and fixedly abutted against the flange 115.

[0066] Preferably, such as Figure 5 As shown, the buffer cavity 15 has a structure with a gradually decreasing cross-sectional area from the inlet to the outlet, and its outlet cross-sectional area is larger than that of the detection cavity 16.

[0067] Specifically, such as Figure 5 As shown, the housing 18 includes a valve seat 13 and a valve body 12 that are fixedly connected. Of course, the housing 18 can also be a one-piece structure, which is not limited here.

[0068] Preferably, such as Figure 5As shown, the pot lid includes a lid body and an inner lid. The main body includes a shell 18, a fixing member 3, and a sealing member 11. The shell 18 is fixed to the lid body, and the fixing member 3 is detachably fixed to the shell 18. The fixing member 3 and the shell 18 clamp and fix the inner lid.

[0069] By making the fixing member 3 and the housing 18 detachable, and by clamping the inner cover together, the inner cover can also be removed from the lid. Since the inner cover is in direct contact with the cooking cavity, it is more easily contaminated by the food inside the pot. The detachable structure facilitates cleaning of the inner cover. Specifically, the user can remove the fixing member 3 from the housing 18, causing the inner cover to loosen and be removed directly. To fix it, after placing the inner cover in place, the fixing member 3 is tightened to the housing 18, restoring the clamping of the inner cover and completing the installation of the inner cover. This not only facilitates the installation and removal of the inner cover, but also exposes the internal cavity of the housing 18 after the fixing member 3 is removed, making it easy to clean at least one of the protective cavity 14, buffer cavity 15, and detection cavity 16.

[0070] Preferably, such as Figure 5 As shown, a sealing ring 33 is also provided on the upper side of the fastener 3, and the sealing ring 33 abuts and seals with the lower end face of the inner cover.

[0071] Specifically, such as Figure 5 As shown, the lower end of the housing 18 has a downwardly protruding rib 132. The fastener 3 includes a fixing part 31 extending into the rib 132 and an abutting part 32 located below the fixing part 31. The inner wall of the rib 132 is provided with a first thread 133, and the outer wall of the fixing part 31 is provided with a second thread 311 that mates with the first thread 133. The abutting part 32 clamps the inner cover with the lower end face of the rib 132.

[0072] The threaded connection makes the connection between the fastener 3 and the housing 18 simpler and more convenient, making the user operation easier and the installation and removal of the inner cover quicker.

[0073] Specifically, the inner cover is provided with an opening through which the fixing part 31 passes. The fixing part 31 passes through the opening to be threaded and fixed to the surrounding rib 132. The cross-sectional area of ​​the abutting part 32 is larger than the cross-sectional area of ​​the fixing part 31, so it cannot pass through the opening. It is located on the lower side of the inner cover and clamps the inner cover together with the lower end face of the surrounding rib 132.

[0074] Specifically, such as Figure 5 As shown, the protective cavity 14 is located inside the fixing member 3. The filter member 6 is located inside the protective cavity 14, wherein, in one embodiment, as... Figure 5As shown, the filter element 6 and the fixing element 3 are integrally formed. This allows the filter element 6 to be removed together with the fixing element 3, making it convenient for users to clean the filter element 6, improving cleaning convenience, and ensuring the cleanliness of the filter element 6. Of course, the filter element 6 can also be detachably fixed to the fixing element 3, allowing the user to further remove the filter element 6 from the fixing element 3.

[0075] In another embodiment, the housing 18 and the fixing member 3 clamp and fix the filter element 6. The filter element 6 is located between the fixing member 3 and the housing 18, so that the two clamp and fix the filter element 6. When the fixing member 3 is removed from the housing 18, the filter element 6 loses its clamp and falls off, and the filter element 6 can also be cleaned separately.

[0076] Preferably, such as Figure 1 , Figure 3 , Figure 5 As shown, the pressure detection assembly also includes a seal 11, with the detection chamber 16 located inside the seal 11, and the seal 11 covering the outer periphery of the sensor 2.

[0077] The seal 11 wraps around the sidewall of the sensor 2 from the outer periphery. When the pressure inside the detection chamber 16 is too high, the seal 11 will be pushed outward by the air pressure, thus forming a gap between the seal 11 and the sidewall of the sensor 2. High-pressure gas can then escape through this gap, preventing the sensor 2 from being subjected to high pressure that could affect detection accuracy or cause damage. Conversely, when the pressure inside the detection chamber 16 does not meet the design requirements, the seal 11 remains tightly fitted to the sidewall of the sensor 2, ensuring a good sealing effect.

[0078] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0079] 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.

[0080] 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 and the pot body cooperate to form a cooking cavity, and the lid is provided with a pressure detection component, characterized in that, The pressure detection assembly includes a body and a sensor. The body has a protective cavity communicating with the cooking cavity, a detection cavity communicating with the sensor, and a buffer cavity communicating between the protective cavity and the detection cavity. The cross-sectional area of ​​the protective cavity is larger than that of the buffer cavity, and the cross-sectional area of ​​the buffer cavity is not smaller than that of the detection cavity. At least one filter is provided between the buffer cavity and the cooking cavity.

2. The pressure cooking appliance according to claim 1, characterized in that, The main body includes a valve body, a valve seat, and a seal. The buffer chamber is located inside the valve body or the valve seat. The seal has a mating part. The sensor extends into the interior of the mating part, and the detection chamber is located inside the mating part.

3. The pressure cooking appliance according to claim 2, characterized in that, The valve seat includes a seat body and a mating post protruding toward the sensor. The buffer cavity is located inside the mating post. The valve body is provided with an opening through which the mating post passes. The sealing element has a first sealing part and a second sealing part located below the mating part. The first sealing part is sleeved on the outer periphery of the mating post, and the second sealing part is located between the seat body and the valve body.

4. The pressure cooking appliance according to claim 3, characterized in that, The seat and / or the valve body are provided with a receiving groove, the second sealing part is located in the receiving groove, and the valve body or the seat is provided with a sealing rib protruding towards the receiving groove, the sealing rib abutting against the second sealing part.

5. The pressure cooking appliance according to claim 1, characterized in that, The body includes a housing, a fixing member, and a sealing member. The protective cavity is located inside the fixing member. The housing and the fixing member clamp and fix the sealing member. The buffer cavity and the detection cavity are both located inside the sealing member.

6. The pressure cooking appliance according to claim 5, characterized in that, The sealing element has a mating section that forms the buffer cavity. The housing has an opening through which the mating section passes. An abutting flange is provided on the outer periphery of the mating section. The fixing element and the housing clamp and fix the abutting flange.

7. The pressure cooking appliance according to claim 1, characterized in that, The pot lid includes a lid body and an inner lid. The main body includes a shell, a fixing member, and a sealing member. The shell is fixed to the lid body, the fixing member is detachably fixed to the shell, and the fixing member and the shell clamp and fix the inner lid.

8. The pressure cooking appliance according to claim 7, characterized in that, The lower end of the housing has a downwardly protruding rib. The fastener includes a fixing part that extends into the rib and an abutting part located below the fixing part. The inner wall of the rib is provided with a first thread, and the outer wall of the fixing part is provided with a second thread that mates with the first thread. The abutting part clamps the inner cover with the lower end face of the rib.

9. The pressure cooking appliance according to claim 1, characterized in that, The pressure detection assembly also includes a seal, the detection chamber is located inside the seal, and the seal covers the outer periphery of the sensor.

10. The pressure cooking appliance according to claim 1, characterized in that, The main body includes a housing, a fixing member, and a sealing member. The protective cavity is located inside the fixing member, and the housing and the fixing member clamp and fix the filter element; or... The filter element and the fixing element are integrally formed.

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