Pot cover assembly and cooking utensil

Abstract

The pot cover assembly comprises a face cover and an inner cover arranged below the face cover, an exhaust cavity is formed between the inner cover and the face cover, the pot cover assembly further comprises an exhaust pipe arranged in the exhaust cavity, the inner cover is provided with an installation opening, the face cover is provided with an exhaust opening and an air vent, the exhaust pipe is installed at the installation opening, and the air vent is communicated with the air vent. A mixing area is arranged in the exhaust pipe, the exhaust pipe is provided with a communicating section communicating the ventilation opening and the mixing area, the exhaust pipe is provided with a positioning structure, and the inner cover is provided with a matching structure matched with the positioning structure so as to limit rotation of the exhaust pipe relative to the surface cover. In the exhaust process, outside cold air enters the mixing area of the exhaust pipe, the cold air and the high-temperature steam are mixed in the exhaust cavity, and bubbles can be rapidly broken to achieve bubble breaking and overflow prevention. The matching structure and the positioning structure are matched to reduce shaking of the exhaust pipe and limit rotation of the exhaust pipe, so that the relative positions of the exhaust pipe, especially the communicating section and the surface cover are kept fixed, and the possibility of air leakage is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a pot lid assembly and a cooking utensil. Background Technology

[0002] When a rice cooker is cooking, the steam generated inside the pot is released through the steam valve located on the lid. When cooking viscous foods such as rice porridge, a large number of bubbles and liquid bubbles are produced during the cooking process. Therefore, during the venting process, the steam carries bubbles containing rice water out of the steam valve's vent. This not only adds to the cleaning burden for the user, but also, if the steam valve is not cleaned in time, the rice water at the vent will solidify, making cleaning more difficult and potentially causing blockage and preventing the rice from venting.

[0003] To address this technical issue, the applicant has previously applied for a steam valve bubble-breaking and overflow prevention technology. This technology involves adding an exhaust pipe inside the steam valve, connecting the cooking chamber to the inside of the steam valve. The exhaust pipe contains a mixing chamber, and the surface of the cover has a vent in addition to the exhaust port. The mixing chamber is connected to the vent via a pipe. During the exhaust process, cold air from outside enters the mixing chamber through the pipe and comes into contact with the high-temperature steam and bubbles entering the exhaust pipe. The low temperature accelerates the bubble breaking, achieving a bubble-breaking effect. Ultimately, the liquid after the bubbles break falls back and separates from the gas, thus preventing overflow.

[0004] However, the exhaust pipe is fixed to the inner cover, and the mixing chamber is connected to the vent on the top cover via a pipeline. However, the relative positions of the pipeline and the vent on the top cover are often difficult to determine, making the assembly of the exhaust pipe and vent challenging and prone to leakage. Furthermore, after installation, the exhaust pipe will wobble due to the airflow during exhaust and will rotate relative to the lid, potentially causing misalignment between the pipeline and the vent, resulting in leakage and affecting the bubble-breaking and overflow prevention effect. Utility Model Content

[0005] This utility model provides a pot lid assembly and cooking appliance to solve the problems of difficulty in positioning the exhaust pipe and the vent on the lid, high assembly difficulty, and the exhaust pipe shaking or rotating relative to the lid, which reduces the connection between the vent and the pipe.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A pot lid assembly includes a top cover and an inner cover located below the top cover. A venting chamber is provided between the inner cover and the top cover. The pot lid assembly also includes a vent pipe disposed within the venting chamber. The inner cover is provided with an installation opening, and the top cover is provided with a vent and a vent. The vent pipe is installed at the installation opening. The vent pipe has a mixing zone inside and a connecting section connecting the vent and the mixing zone. The vent pipe is provided with a positioning structure, and the inner cover is provided with a mating structure that cooperates with the positioning structure to restrict the rotation of the vent pipe relative to the top cover.

[0008] In this invention, the exhaust pipe is installed on the inner cover. During the exhaust process, the airflow and bubbles in the pot enter the exhaust pipe through the installation port on the inner cover. At the same time, cold air from the outside enters the mixing zone of the exhaust pipe through the vent. The cold air and high-temperature steam mix in the exhaust chamber. Under the action of low temperature, the bubbles will quickly burst and complete the gas-liquid separation in the exhaust chamber. The liquid falls back into the pot under its own gravity, while the gas continues to flow and is discharged through the exhaust port on the lid. This achieves bubble breaking and overflow prevention, ensures the surface cleanliness of the pot lid assembly, and avoids the exhaust port being blocked.

[0009] In addition, the exhaust pipe is equipped with a positioning structure. During installation, the positioning structure works in conjunction with the mating structure on the inner cover to position the exhaust pipe correctly. This ensures the exhaust pipe is installed onto the inner cover in the correct orientation. After the inner cover and the top cover are assembled, the connecting section naturally abuts against the outer periphery of the vent, achieving both communication with the vent and a seal at the contact point. After installation, the mating and positioning structures also limit the exhaust pipe's movement, reducing sway and restricting rotation. This keeps the relative position of the exhaust pipe, especially the connecting section, fixed to the top cover, ensuring the connecting section and vent remain vertically aligned and maintaining effective communication while preserving the seal at the contact point and minimizing the possibility of leakage.

[0010] The exhaust pipe has an air inlet end, which is installed at the mounting port. The air inlet end has a mounting rib, and the positioning structure is a positioning rib protruding from the mounting rib. The mating structure is a positioning port opened in the inner cover. The positioning rib and the positioning port are inserted for positioning.

[0011] In this solution, the insertion and mating method makes the matching of the positioning structure and the mating structure simpler and easier to operate. During the assembly process, the assembler can intuitively see the location of the positioning ribs and positioning openings, thus enabling them to quickly complete the mating and improve assembly efficiency. At the same time, the processing of the ribs and openings is also relatively simple, reducing the processing difficulty.

[0012] The outer periphery of the positioning rib is provided with an outwardly protruding limiting protrusion. After the positioning rib is inserted into the positioning port, the limiting protrusion can cooperate with the cover stop to restrict the exhaust pipe from moving upward and / or downward relative to the inner cover.

[0013] In this solution, during the process of inserting the positioning rib into the positioning port, the limiting protrusion passes through the positioning port and forms a stop with the upper or lower surface of the inner cover, thereby limiting the exhaust pipe upward or downward. This allows the positioning structure and the mating structure to not only limit the circumferential rotation of the exhaust pipe but also limit its vertical movement, further improving the positional stability of the exhaust pipe and reducing the risk of the exhaust pipe falling off the inner cover.

[0014] The exhaust pipe has a constricted section inside, which is located upstream of the mixing zone along the airflow direction.

[0015] In this design, the fluid flowing upwards from the cooking cavity into the exhaust pipe passes through a constriction section before reaching the mixing zone. Due to the smaller flow area of ​​the constriction section, the fluid velocity increases as it flows through, resulting in a decrease in air pressure. This pressure difference between the exhaust pipe and the outside atmosphere creates a suction force, drawing outside air into the mixing zone through the connecting section. This achieves natural airflow without the need for an additional suction device, simplifying the lid assembly structure and saving costs. Furthermore, the reduced flow area of ​​the constriction section increases the pressure on air bubbles carried in the airflow, aiding in bubble breakage. This allows some bubbles to burst before mixing with the outside air, improving the overall bubble-breaking effect.

[0016] The inner wall of the exhaust pipe is provided with mating ribs extending toward the inside of the exhaust pipe, and the mating ribs form a constricted section.

[0017] In this design, the ribs form a constricted section, making the exhaust pipe a double-layer structure. The ribs form the inner layer, which encloses the constricted section to allow the passage of high-temperature steam and bubbles rising from the cooking cavity. The connecting section connects with the outer layer. Therefore, when airflow passes through the constricted section and causes the ribs to sway, the swaying is reduced and transmitted to the outer layer, thus ensuring the stability of the connecting section and preventing air leakage at the contact point between the connecting section and the cover.

[0018] The connecting section includes an extension and a sealing lip located at one end of the extension. The sealing lip extends obliquely to abut against the faceplate and surrounds the outer periphery of the vent.

[0019] In this design, the inclined sealing lip abuts against the surrounding area of ​​the vent to form a seal. This creates a flared, funnel-shaped structure at the end of the connecting section, providing full coverage of the vent, reducing alignment difficulties, and better collecting the airflow entering the vent. Furthermore, the inclined sealing lip increases the contact area between the two when it abuts against the cover, making the seal more stable and improving the sealing effect.

[0020] The exhaust pipe has an inlet end and an outlet end. The inlet end is installed at the mounting port and has an inlet port. The outlet end has an outlet port. There is a bend between the inlet end and the outlet end so that the outlet port is away from the exhaust port.

[0021] In this design, during cooking, the steam in the cooking chamber flows through the bend in the exhaust pipe. The bend obstructs and redirects the steam, breaking bubbles and increasing fluid dynamics, which helps in steam liquefaction and condensation. Especially when cooking foods like rice porridge, the boiling in the cooking chamber pushes some rice grains or small food particles upwards into the exhaust pipe. The bend obstructs and impacts these solid particles, causing them to fall back into the cooking chamber, significantly reducing the probability of the exhaust pipe becoming clogged.

[0022] A baffle is provided between the exhaust port and the air outlet, and there is an air passage gap between the baffle and the exhaust pipe, or between the baffle and the cover.

[0023] In this design, the baffles and the air gap can further extend the steam flow path. Moreover, the steam can experience diverse flow cross-sectional areas as it enters the exhaust pipe, enters the exhaust chamber from the exhaust pipe, flows through the air gap, and is finally discharged from the exhaust port. This results in various changes in the steam flow velocity, significantly improving the defoaming efficiency and condensate formation efficiency, thereby enhancing the overflow prevention effect.

[0024] The inner cover is equipped with a mounting platform, and the mounting port and mating structure are located inside the mounting platform. A return port is also provided inside the mounting platform, and the return port is located below the mixing zone.

[0025] In this design, the inner cover surface typically has a drainage structure to guide liquid dripping from it. However, this drainage structure also makes the inner cover surface uneven, making it difficult to machine the mounting port and mating structure, and consequently, more difficult to install the exhaust pipe, resulting in a challenging seal. By incorporating a mounting platform into the inner cover, a flat area is created for machining the mounting structure. The bottom surface of the mounting platform is flat, which facilitates the machining of the mounting port and mating structure, as well as the installation of the exhaust pipe. Furthermore, the recessed design of the mounting platform lowers the height of the return port, making it easier for liquid in the exhaust chamber to collect and return within the mounting platform.

[0026] This utility model also discloses a cooking appliance, including a pot body and the aforementioned pot lid assembly. The inner lid and the pot body cooperate to form a cooking cavity. The air inlet end of the exhaust pipe is connected to the cooking cavity, and the air outlet end of the exhaust pipe is connected to the exhaust cavity.

[0027] During the venting process, airflow and bubbles inside the pot enter the vent pipe through the mounting port on the inner lid. At the same time, cold air from the outside enters the mixing zone of the vent pipe through the vent. The cold air mixes with the high-temperature steam in the venting chamber. Under the action of low temperature, the bubbles will quickly burst and complete the gas-liquid separation in the venting chamber. The liquid falls back into the pot under its own gravity, while the gas continues to flow and is discharged through the vent on the lid. 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:

[0029] Figure 1 This is a cross-sectional view of a pot lid assembly according to one embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the inner cover according to one embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the exhaust pipe according to one embodiment of the present invention;

[0032] Figure 4 for Figure 3 Cross-sectional view of the central exhaust pipe;

[0033] Figure 5 This is a cross-sectional view of the inner cover according to one embodiment of the present utility model;

[0034] Figure 6 for Figure 5 A magnified view of area A in the middle;

[0035] Figure 7 This is a schematic diagram of the inner cover according to one embodiment of the present invention, wherein the exhaust pipe is not shown.

[0036] in:

[0037] 1. Cover; 11. Cover plate; 12. Liner; 13. Exhaust port; 14. Vent; 15. Rib;

[0038] 2 Inner cover; 21 Mounting port; 22 Mounting platform; 221 First step surface; 222 Second step surface; 23 Return port; 24 Positioning port;

[0039] 3. Exhaust chambers;

[0040] 4 Exhaust pipe; 41 Connecting section; 411 Extension; 412 Sealing lip; 42 Mixing zone; 43 Inlet end; 431 Inlet port; 44 Outlet end; 441 Outlet port; 45 Bend; 46 Mounting rib; 47 Positioning rib; 471 Limiting protrusion; 48 Matching rib; 481 Narrow section. Detailed Implementation

[0041] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] like Figures 1 to 3 As shown, a pot lid assembly includes a top cover 1 and an inner cover 2 located below the top cover 1. An exhaust chamber 3 is provided between the inner cover 2 and the top cover 1. The pot lid assembly also includes an exhaust pipe 4 disposed in the exhaust chamber 3. The inner cover 2 is provided with an installation port 21, the top cover 1 is provided with an exhaust port 13 and a vent 14, the exhaust pipe 4 is installed in the installation port 21, the exhaust pipe 4 has a mixing zone 42 inside, the exhaust pipe 4 has a connecting section 41 connecting the vent 14 and the mixing zone 42, the exhaust pipe 4 is provided with a positioning structure, and the inner cover 2 is provided with a mating structure that cooperates with the positioning structure to restrict the rotation of the exhaust pipe 4 relative to the top cover 1.

[0047] It should be noted that in this invention, the outside cold air and high-temperature steam do not need to be completely mixed in the mixing zone 42. It is sufficient that both the outside air and the high-temperature steam pass through the mixing zone 42 during the exhaust process. For example, during the exhaust process, the high-temperature steam in the cooking cavity and the outside cold air initially mix in the mixing zone 42 within the exhaust pipe 4. As the airflow continues, the high-temperature steam and the outside cold air enter the exhaust chamber 3 through the outlet of the exhaust pipe 4, where they continue to mix thoroughly. In other words, the mixing of the high-temperature steam and the outside cold air occurs partly within the mixing zone 42 inside the exhaust pipe 4 and partly within the exhaust chamber 3 outside the exhaust pipe 4.

[0048] Preferably, such as Figure 3 As shown, the connecting section 41 and the exhaust pipe 4 are integrally formed structures. The connecting section 41 is located on the top wall of the exhaust pipe 4 and extends vertically upward to abut against the inner wall of the cover 1 to form a seal. Of course, the connecting section 41 can also be a separate structure from the exhaust pipe 4, and the connection and communication can be achieved through assembly.

[0049] Preferably, the exhaust pipe 4 is a structure made of a flexible material, such as silicone, so that it can be fixed by interference fit while having good high temperature resistance, thus reducing the difficulty of installation.

[0050] like Figure 1 As shown, the mounting port 21 is located on the bottom wall of the exhaust chamber 3, and the vent 14 and exhaust port 13 are located on the top wall of the exhaust chamber 3.

[0051] In this invention, the exhaust pipe 4 is installed on the inner cover 2. During the exhaust process, the airflow and bubbles in the pot enter the exhaust pipe 4 through the installation port 21 on the inner cover 2. At the same time, cold air from the outside enters the mixing zone 42 of the exhaust pipe 4 through the vent 14. The cold air and high-temperature steam mix in the exhaust chamber 3. Under the action of low temperature, the bubbles will quickly break and complete the gas-liquid separation in the exhaust chamber 3. The liquid falls back into the pot under its own gravity, while the gas continues to flow and is discharged through the exhaust port 13 on the top cover 1. This achieves bubble breaking and overflow prevention, ensures the surface cleanliness of the pot lid assembly, and avoids the exhaust port 13 from being blocked.

[0052] Furthermore, the exhaust pipe 4 is equipped with a positioning structure. During installation, the positioning structure, in conjunction with the mating structure on the inner cover 2, enables the exhaust pipe 4 to be positioned correctly and installed onto the inner cover 2. After the inner cover 2 and the face cover 1 are assembled, the connecting section 41 naturally abuts against the outer periphery of the vent 14, achieving communication with the vent 14 while ensuring a seal at the abutment. After the exhaust pipe 4 is installed, the mating structure and positioning structure also limit its movement, reducing wobbling and restricting rotation. This keeps the relative position of the exhaust pipe 4, especially the connecting section 41, fixed with the face cover 1, ensuring the connecting section 41 and the vent 14 remain vertically aligned, guaranteeing communication while maintaining a seal at the abutment and reducing the possibility of leakage.

[0053] As a preferred embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, the exhaust pipe 4 has an air inlet end 43, which is installed in the mounting port 21. The air inlet end 43 has a mounting rib 46. The positioning structure is a positioning rib 47 protruding from the mounting rib 46. The mating structure is a positioning port 24 opened in the inner cover 2. The positioning rib 47 and the positioning port 24 are inserted for positioning.

[0054] By using a plug-in connection method, the positioning structure and the mating structure are made easier to operate. During the assembly process, the assembler can intuitively see the location of the positioning rib 47 and the positioning opening 24, thus enabling them to quickly complete the mating and improve assembly efficiency. At the same time, the processing of the rib and the opening is also relatively simple, reducing the processing difficulty.

[0055] Of course, in other embodiments, the positioning structure can be set as an open structure and the mating structure can be set as a rib structure, which can also enable the two to be inserted and mated.

[0056] Specifically, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, there are two mounting ribs 46, spaced apart along the axial direction of the air inlet end 43. After the air inlet section is fixed to the mounting port 21, one mounting rib 46 is located above the inner cover 2, and the other mounting rib 46 is located below the inner cover 2, so that the edge of the mounting port 21 is located between the upper and lower mounting ribs 46 and is clamped by the upper and lower mounting ribs 46. Preferably, the edge of the mounting port 21 is provided with a flange to improve structural strength.

[0057] The positioning rib 47 can be positioned at the upper mounting rib position 46, passing downward through the positioning opening 24 to complete the insertion, or it can be... Figure 3 , Figure 6 As shown, the mounting rib 46 located below extends upward through the positioning port 24 to complete the fit.

[0058] Furthermore, such as Figure 3 , Figure 6 As shown, the outer periphery of the positioning rib 47 is provided with an outwardly protruding limiting protrusion 471. After the positioning rib 47 is inserted into the positioning port 24, the limiting protrusion 471 can cooperate with the stop of the cover 1 to restrict the exhaust pipe 4 from moving upward and / or downward relative to the inner cover 2.

[0059] During the process of inserting the positioning rib 47 into the positioning port 24, the limiting protrusion 471 passes through the positioning port 24 and forms a stop with the upper or lower surface of the inner cover 2, thereby limiting the exhaust pipe 4 upward or downward. This allows the positioning structure and the mating structure to not only limit the circumferential rotation of the exhaust pipe 4, but also limit its vertical movement, further improving the positional stability of the exhaust pipe 4 and reducing the risk of the exhaust pipe 4 falling off the inner cover 2.

[0060] In one specific embodiment, such as Figure 6 As shown, the positioning rib 47 is disposed at the lower mounting rib position 46 and protrudes upward. A limiting groove is formed between the limiting protrusion 471 and the mounting rib position 46. The edge of the positioning opening 24 is located within the limiting groove, thus being limited upward by the limiting protrusion 471 and downward by the mounting rib position 46. Preferably, as Figure 6 As shown, the upper surface of the limiting protrusion 471 is provided with a guide slope to facilitate passing through the positioning port 24.

[0061] It should be noted that this utility model does not limit the manner in which outside air enters the mixing zone 42, and it can be one of the following embodiments:

[0062] Implementation Method 1: In this embodiment, a suction device, such as a fan, is provided in the connecting section 41, which can draw in outside air through the vent 14 and then draw outside air into the mixing zone 42.

[0063] Implementation Method Two: In this implementation method, as follows Figure 1 , Figure 4 As shown, the exhaust pipe 4 has a constriction section 481 inside, which is located upstream of the mixing zone 42 along the airflow direction. This allows outside air to be automatically drawn into the mixing zone 42.

[0064] In this embodiment, the fluid flowing upwards from the cooking cavity into the exhaust pipe 4 passes through the constriction section 481 before reaching the mixing zone 42. Because the flow area of ​​the constriction section 481 is small, the fluid velocity increases as it flows through, resulting in a decrease in air pressure. This pressure difference between the exhaust pipe 4 and the outside atmosphere creates a suction force on the outside air, causing it to enter the mixing zone 42 through the connecting section 41. This allows for natural airflow without the need for an additional suction device, simplifying the structure of the lid assembly and saving costs. Furthermore, the reduced flow area of ​​the constriction section 481 also increases the pressure on the air bubbles carried in the airflow, aiding in bubble breakage. This causes some bubbles to break before mixing with the outside air, thus improving the overall bubble-breaking effect.

[0065] Furthermore, such as Figure 4 As shown, the inner wall of the exhaust pipe 4 is provided with a mating rib 48 extending toward the inside of the exhaust pipe 4, and the mating rib 48 forms a constricted section 481.

[0066] The ribs 48 form a constricted section 481, making the exhaust pipe 4 a double-layer structure. The ribs 48 form the inner layer structure, which is used for the passage of high-temperature steam and bubbles rising from the cooking cavity. The connecting section 41 is connected to the outer layer structure. Therefore, when the airflow passes through the constricted section 481 and causes the ribs 48 to shake, the shaking is reduced and transmitted to the outer layer structure, thereby ensuring the stability of the connecting section 41 and preventing air leakage at the contact point between the connecting section 41 and the cover 1.

[0067] Preferably, such as Figure 4 As shown, the mating rib 48 has a connecting end that connects to the outer pipe wall and a mating end that extends toward the interior of the exhaust pipe 4. The mating ends form a constricted section 481, and there is a gap between the mating ends and the outer pipe wall.

[0068] Specifically, such as Figure 4 As shown, the connecting section 41 is located on the top wall of the exhaust pipe 4. The upward projection of the rib 48 covers the connecting section 41, so that the high-temperature steam can flow directly downstream of the connection position between the connecting section 41 and the exhaust pipe 4 through the guidance of the rib 48, thus preventing the high-temperature steam from being discharged to the outside through the connecting section 41 and the vent 14.

[0069] Of course, in other embodiments, the exhaust pipe 4 can also be designed as a single-layer pipe structure, with the constricted section 481 formed by the partial inward contraction of the inner wall, which is not limited here.

[0070] Preferably, such as Figure 3 , Figure 4As shown, the connecting section 41 includes an extension 411 and a sealing lip 412 located at one end of the extension 411. The sealing lip 412 extends obliquely to abut against the cover 1 and surrounds the outer periphery of the vent 14.

[0071] The inclined sealing lip 412 abuts against the peripheral area of ​​the vent 14 to form a seal. On the one hand, this makes the end of the connecting section 41 form a flared structure in the shape of a trumpet, which not only fully covers the vent 14, reducing the difficulty of alignment, but also better collects the airflow entering the vent 14. Moreover, when the inclined sealing lip 412 abuts against the cover 1, it can also increase the contact area between the two, making the seal more stable and improving the sealing effect.

[0072] like Figure 1 , Figure 3 , Figure 4 As shown, the exhaust pipe 4 has an inlet end 43 and an outlet end 44. The inlet end 43 is installed in the mounting port 21 and has an inlet port 431. The outlet end 44 has an outlet port 441. There is a bend 45 between the inlet end 43 and the outlet end 44 so that the outlet port 441 is away from the exhaust port 13.

[0073] During cooking, steam in the cooking chamber flows through the bend 45 of the exhaust pipe 4. The bend 45 obstructs and redirects the steam, breaking bubbles and increasing fluid dynamics, which helps in steam liquefaction and condensation. Especially when cooking rice porridge or similar foods, the boiling in the cooking chamber pushes some rice grains or small food particles upwards into the exhaust pipe 4. The bend 45 obstructs and impacts these solid particles, causing them to fall back into the cooking chamber, thus significantly reducing the probability of the exhaust pipe 4 becoming blocked.

[0074] Specifically, such as Figure 4 As shown, the air inlet 431 faces downwards, the air outlet 441 faces horizontally, and the bending angle of the bend 45 is 90°. The air outlet 441 is located away from the exhaust port 13, which can further lengthen the air path, effectively reduce the kinetic energy of the airflow, and help to complete gas-liquid separation in the exhaust chamber 3, preventing bubbles and liquid from being ejected from the exhaust port 13 along with the airflow.

[0075] Preferably, the inner wall of the bend 45 is rounded to make the steam turn more gently and avoid the airflow from violently colliding with the inner wall of the bend 45 and forming turbulence in the exhaust pipe 4.

[0076] Preferably, such as Figure 1 As shown, a baffle 15 is provided between the exhaust port 13 and the air outlet 441, and there is an air passage gap between the baffle 15 and the exhaust pipe 4, or between the baffle 15 and the cover 1.

[0077] The setting of the baffle 15 and the existence of the air gap can further extend the flow path of steam. Moreover, the steam can experience a variety of flow cross-sectional areas as it enters the exhaust pipe 4, enters the exhaust chamber 3 from the exhaust pipe 4, flows through the air gap and is discharged from the exhaust port 13. This results in various changes in the steam flow velocity, which greatly improves the defoaming efficiency and the condensate formation efficiency, thereby improving the overflow prevention effect.

[0078] Specifically, in one embodiment, such as Figure 1 As shown, the baffle 15 is disposed on the top wall of the faceplate 1, i.e., the exhaust chamber 3, and extends downward, forming an air passage gap between its lower end and the exhaust pipe 4. In another embodiment, the baffle 15 is disposed on the top wall of the exhaust pipe 4 and extends upward, so as to form an air passage gap between its upper end and the faceplate 1. Of course, the baffle 15 can also extend to the lower part of the exhaust chamber 3, forming an air passage gap between it and the bottom wall of the exhaust chamber 3, which is not limited here.

[0079] During the exhaust process, airflow and bubbles inside the pot enter the exhaust pipe 4 through the air inlet 431. Simultaneously, outside cold air enters the mixing zone 42 of the exhaust pipe 4 through the vent 14. The two airflows enter the exhaust chamber 3 through the air outlet 441 and mix in the mixing zone 42 and the exhaust chamber 3. Since the air outlet 441 is away from the exhaust port 13, the mixed airflow needs to bypass the exhaust pipe 4 to flow towards the exhaust port 13. During this process, it is again blocked by the baffle 15 and reaches the area where the exhaust port 13 is located through the air gap.

[0080] In a preferred embodiment, such as Figure 2 , Figure 7 As shown, the inner cover 2 is provided with a mounting platform 22, the mounting port 21 and the mating structure are provided in the mounting platform 22, and the mounting platform 22 is also provided with a return port 23, which is located below the mixing zone 42.

[0081] Specifically, the return port 23 is located below the exhaust port 441 of the exhaust pipe 4. The inner cover 2 typically has a drainage structure to guide liquid dripping from its surface. However, this drainage structure also makes the surface of the inner cover 2 uneven, making it difficult to machine the mounting port 21 and the mating structure, and consequently, making the installation of the exhaust pipe 4 more difficult and sealing more challenging. By providing a mounting platform 22 on the inner cover 2, a flat area is created for machining the mounting structure. The bottom surface of the mounting platform 22 is flat, which facilitates the machining of the mounting port 21 and the mating structure, as well as the installation of the exhaust pipe 4. Simultaneously, the recessed design of the mounting platform 22 lowers the height of the return port 23, making it easier for the liquid in the exhaust chamber 3 to collect and return within the mounting platform 22.

[0082] like Figure 7 As shown, the mounting platform 22 has a first stepped surface 221 that is recessed relative to the upper surface of the inner cover 2, and a second stepped surface 222 that is recessed relative to the first stepped surface 221. The mounting opening 21 and the mating structure are both located on the second stepped surface 222, and the first stepped surface 221 is used to abut and seal with the sealing element. Specifically, as shown... Figure 1 As shown, the cover 1 includes a liner 12 and a cover plate 11 located above the liner 12. The cover plate 11, the liner 12, and the liner 12 are provided with a sealing element. The lower end of the sealing element abuts against the inner cover 2 so that the cover plate 11, the liner 12, the sealing element, and the inner cover 2 together form an exhaust chamber 3.

[0083] This utility model also discloses a cooking appliance, including a pot body and the aforementioned pot lid assembly. The inner lid 2 cooperates with the pot body to form a cooking cavity. The air inlet 43 of the exhaust pipe 4 is connected to the cooking cavity, and the air outlet 44 of the exhaust pipe 4 is connected to the exhaust cavity 3.

[0084] During the exhaust process, the airflow and bubbles inside the pot enter the exhaust pipe 4 through the mounting port 21 on the inner cover 2. At the same time, cold air from the outside enters the mixing zone 42 of the exhaust pipe 4 through the vent 14. The cold air and high-temperature steam mix in the exhaust chamber 3. Under the action of low temperature, the bubbles will quickly break and complete the gas-liquid separation in the exhaust chamber 3. The liquid falls back into the pot under its own gravity, while the gas continues to flow and is discharged through the exhaust port 13 on the top cover 1.

[0085] Preferably, the inner cover 2 is detachably fixed to the front cover 1. Since the inner cover 2 is in direct contact with the cooking environment inside the cooking cavity, it is more easily contaminated by food. The detachable design makes it convenient for the user to clean the inner cover 2. The exhaust pipe 4 is installed on the inner cover 2, so it can be removed along with the inner cover 2. Preferably, the exhaust pipe 4 is also detachably installed on the inner cover 2, so that the exhaust pipe 4 can be removed separately for cleaning.

[0086] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0087] 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.

[0088] 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 pot lid assembly, comprising a top cover and an inner cover disposed below the top cover, wherein a venting chamber is provided between the inner cover and the top cover, characterized in that, The pot lid assembly also includes an exhaust pipe disposed within the exhaust chamber. The inner cover is provided with an installation port, and the top cover is provided with an exhaust port and a vent. The exhaust pipe is installed in the installation port. The exhaust pipe has a mixing zone inside and a connecting section connecting the vent and the mixing zone. The exhaust pipe is provided with a positioning structure, and the inner cover is provided with a mating structure that cooperates with the positioning structure to restrict the exhaust pipe from rotating relative to the top cover.

2. The pot lid assembly according to claim 1, characterized in that, The exhaust pipe has an air inlet end, which is installed at the mounting port. The air inlet end has a mounting rib, and the positioning structure is a positioning rib protruding from the mounting rib. The mating structure is a positioning port opened in the inner cover, and the positioning rib and the positioning port are inserted for positioning.

3. The pot lid assembly according to claim 2, characterized in that, The outer periphery of the positioning rib is provided with an outwardly protruding limiting protrusion. After the positioning rib is inserted into the positioning port, the limiting protrusion can cooperate with the cover stop to restrict the exhaust pipe from moving upward and / or downward relative to the inner cover.

4. The pot lid assembly according to claim 1, characterized in that, The exhaust pipe has a constricted section inside, which is located upstream of the mixing zone along the airflow direction.

5. The pot lid assembly according to claim 4, characterized in that, The inner wall of the exhaust pipe is provided with a mating rib extending toward the inside of the exhaust pipe, and the mating rib surrounds the constricted section.

6. The pot lid assembly according to claim 1, characterized in that, The connecting section includes an extension and a sealing lip located at one end of the extension. The sealing lip extends obliquely to abut against the faceplate and surrounds the outer periphery of the vent.

7. The pot lid assembly according to claim 1, characterized in that, The exhaust pipe has an inlet end and an outlet end. The inlet end is installed at the mounting port and has an inlet port. The outlet end has an outlet port. There is a bend between the inlet end and the outlet end so that the outlet port is away from the exhaust port.

8. The pot lid assembly according to claim 7, characterized in that, A baffle is provided between the exhaust port and the air outlet, and there is an air passage gap between the baffle and the exhaust pipe, or between the baffle and the face cover.

9. The pot lid assembly according to claim 1, characterized in that, The inner cover is provided with a mounting platform, the mounting port and the mating structure are provided in the mounting platform, and the mounting platform is also provided with a return port, which is located below the mixing zone.

10. A cooking utensil, comprising a pot body, characterized in that, It also includes the pot lid assembly according to any one of claims 1-9, wherein the inner lid cooperates with the pot body to form a cooking cavity, the air inlet end of the exhaust pipe is connected to the cooking cavity, and the air outlet end of the exhaust pipe is connected to the exhaust cavity.

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