Upper cover assembly and cooking utensil

Abstract

The application discloses an upper cover assembly, which comprises an upper cover, a fixing cover, a blockage prevention cover, an exhaust pipe and a fastener, wherein the fixing cover comprises a first buckling part and is provided with an inner cavity with a cavity opening downward; the blockage prevention cover comprises a second buckling part and is provided with a ventilation opening; the blockage prevention cover is sleeved on the outer side of the fixing cover, the first buckling part is buckled with the second buckling part, and the fixing cover and the blockage prevention cover form a gap flow channel capable of communicating with the inner cavity; further, the exhaust pipe is arranged on the upper cover and is provided with an exhaust passage communicating with the inner cavity; and the fastener is located in the inner cavity and is connected with the exhaust pipe, so as to lock the fixing cover on the upper cover. Meanwhile, a cooking utensil applying the upper cover assembly is also disclosed, and the technical scheme of the application can effectively solve the problem that the existing pressure cooker is prone to blockage.

Description

Technical Field

[0001] This application relates to the field of cooking appliance technology, and in particular to a top cover assembly and a cooking appliance. Background Technology

[0002] In related technologies, cooking appliances such as steamers and pressure cookers have become indispensable tools in modern kitchens, and their usage frequency is showing a significant upward trend. Pressure cookers, for example, are highly favored by a wide range of users due to their efficient and rapid cooking characteristics.

[0003] However, the clogging of the venting assembly in pressure cookers remains a significant technical problem, especially when cooking porridge or similar dishes. Thick porridge liquid rises with the steam and flows upwards along the internal channels of the venting assembly, gradually accumulating and eventually forming a difficult-to-clean blockage. Once the venting assembly becomes clogged, the pressure inside the pressure cooker cannot be released normally, causing the pressure to rise continuously, posing a significant safety risk and potentially threatening the personal safety and property of the user. Utility Model Content

[0004] This application provides a lid assembly and a cooking appliance that can effectively solve the problem of easy clogging in existing pressure cookers.

[0005] In a first aspect, embodiments of this application provide a top cover assembly, which includes a top cover, a fixing cover, an anti-clogging cover, an exhaust pipe, and fasteners. The fixing cover includes a first fastening portion and has an inner cavity with its opening facing downwards. The anti-clogging cover includes a second fastening portion and has a vent. The anti-clogging cover is sleeved on the outside of the fixing cover, and the first fastening portion and the second fastening portion fasten together, forming a gap flow channel between the fixing cover and the anti-clogging cover that can communicate with the inner cavity. Furthermore, the exhaust pipe passes through the top cover and has an exhaust channel communicating with the inner cavity. The fasteners are located in the inner cavity and connected to the exhaust pipe to lock the fixing cover onto the top cover.

[0006] In one embodiment, the vent is located on the side of the first fastening portion opposite to the cavity opening.

[0007] In one embodiment, the vents are configured in multiple ways, and the multiple vents are evenly distributed around the exhaust pipe on the anti-clogging cover.

[0008] In one embodiment, one of the first and second fastening portions is configured as a protrusion, and the other of the first and second fastening portions is configured as a protrusion surrounding the exhaust pipe, wherein the protrusion can pass through the notch and engage with the protrusion.

[0009] In one embodiment, the convex humps are configured as a plurality of humps, which are evenly distributed around the exhaust pipe.

[0010] In one embodiment, the fixing cover further includes a skirt portion, which is bent toward the anti-blocking cover and located on the side closer to the cavity opening.

[0011] In one embodiment, the anti-clogging cover further includes an anti-slip portion, which protrudes toward the side opposite to the anti-clogging cover.

[0012] In one embodiment, the fastener includes a fixing nut and a spring washer, wherein the fixing nut is threadedly connected to the exhaust pipe, and the spring washer is sleeved on the exhaust pipe and sandwiched between the fixing nut and the fixing cover.

[0013] In one embodiment, the upper cover assembly further includes a pressure limiting valve and a valve cover, wherein the pressure limiting valve is provided with an exhaust port, the pressure limiting valve is sleeved on the exhaust pipe and is used to open or block the exhaust passage, and in the open state, the exhaust port is connected to the exhaust passage; the valve cover is connected to the upper cover and covers the outside of the pressure limiting valve, the valve cover has an inner cavity and a discharge port communicating with the inner cavity, and the inner cavity is connected to the exhaust port.

[0014] Secondly, embodiments of this application provide a cooking utensil pot body and the aforementioned upper cover assembly, the upper cover assembly being detachably disposed on the pot body.

[0015] Based on the above embodiments, compared with related technologies, the technical solution of this application uses the first fastening part on the fixed cover and the second fastening part on the anti-clogging cover to form a gap flow channel connecting the inner cavity. This allows steam during cooking to enter the gap flow channel from the pot body through the vent, then into the inner cavity, and finally be discharged through the exhaust channel of the exhaust pipe. During this process, the anti-clogging cover can prevent the porridge liquid from directly entering the inner cavity, and the steam flows in a roundabout manner. Solid particles in the porridge liquid will settle on the outside of the anti-clogging cover due to gravity and other factors, preventing the exhaust channel from being blocked, achieving normal pressure discharge from the pot, and ensuring cooking safety. The fasteners can lock the fixed cover onto the top cover, so that both the fixed cover and the anti-clogging cover can be firmly installed on the top cover, ensuring the stability of the top cover assembly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the upper cover assembly of this utility model;

[0018] Figure 2 This is an exploded view of the upper cover assembly of this utility model;

[0019] Figure 3 This is an assembly cross-sectional view of the top cover assembly of this utility model;

[0020] Figure 4 This is an assembly diagram of the upper cover assembly of this utility model;

[0021] Figure 5 This is an airflow trajectory diagram of the upper cover assembly of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the fixing cover in this utility model;

[0023] Figure 7 This is a schematic diagram of the anti-clogging cover in this utility model.

[0024] Explanation of icon numbers:

[0025] 100-Top cover assembly, 1-Top cover, 11-Face cover, 12-Inner cover, 13-Steel cover, 14-Sealing ring, 15-Second through hole, 2-Exhaust assembly, 21-Fixing cover, 211-First fastening part, 212-Inner cavity, 213-First top wall, 214-First peripheral side wall, 215-First through hole, 216-Skirt part, 22-Anti-clogging cover, 221-Second fastening part, 222-Ventilation port, 223-Second top wall, 224-Second peripheral side wall, 225-Accommodation chamber, 226-Anti-slip part, 23-Gap flow channel, 24-Exhaust pipe, 241-Exhaust passage, 242-Step part, 25-Fastener, 251-Fixing nut, 252-Washer, 26-Pressure relief valve, 261-Exhaust hole, 27-Flat washer, 28-Valve cover, 281-Inner cavity.

[0026] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0028] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This application proposes a cooking appliance primarily for cooking food ingredients. For example, a pressure cooker utilizes heating to convert water inside the pot into steam, thereby accumulating pressure inside the pot. This pressure exceeds normal atmospheric pressure, significantly improving cooking efficiency. It is suitable for quickly stewing meats, beans, and other ingredients, achieving a tender and flavorful result in a short time. Typically, the working principle of a pressure cooker is based on the property that the boiling point of water increases with pressure. When the pressure inside the pot increases, the boiling point of water rises accordingly, and the temperature inside the pot can far exceed 100℃ under normal atmospheric pressure, thus accelerating the cooking process of food and achieving highly efficient, energy-saving, and unique cooking effects.

[0032] In related technologies, the cooking appliance includes a lid assembly 100 and a pot body, the pot body having an inner liner for holding the food to be cooked. Please refer to... Figure 1 The upper cover assembly 100 includes an exhaust assembly and an upper cover 1. The upper cover 1 can be closed onto the pot body and is detachably connected to the pot body, that is, the upper cover assembly 100 is detachably mounted on the pot body.

[0033] It should be noted that the upper cover 1 of this application comprises three parts: a front cover 11, an inner cover 12, and a steel cover 13. The front cover 11 serves as the outermost part of the upper cover 1 and is equipped with a handle for the user to grip. The inner cover 12 is located inside the front cover 11, and the steel cover 13 is rotatably suspended below the inner cover 12 and located on the inner side of the inner cover 12. The edge of the steel cover 13 is provided with cover teeth, which can be screwed into the pot's teeth, allowing it to be opened and closed by rotation. Furthermore, a sealing ring 14 is provided on the steel cover 13. After the steel cover 13 is fastened, the sealing ring 14 presses against the periphery of the opening of the inner pot, thereby forming a sealed cooking cavity to prevent steam leakage from the cooking cavity. The steel cover 13 can be a hollow ring structure, that is, the cooking cavity is partially enclosed by the inner pot, the sealing ring 14, the steel cover 13 and the inner cover 12. Of course, the steel cover 13 can also be an integral cover structure, that is, the cooking cavity is enclosed by the inner pot, the sealing ring 14 and the steel cover 13.

[0034] In addition, the lid 1 and the pot body can be designed separately, that is, after the lid teeth and pot teeth are unscrewed, the lid 1 can be separated from the pot body. Of course, the lid 1 and the pot body can also be designed as a single piece, for example, by using a hinge structure to connect the lid 1 and the pot body, so that the lid 1 can be flipped open around the axis of the hinge.

[0035] During the heating process of a cooking appliance, as the pressure inside the cooking cavity gradually increases, when the pressure reaches its upper limit, it needs to be released through the venting assembly to ensure safety. For details, please refer to the relevant documentation. Figure 2 and Figure 3 The exhaust assembly includes an exhaust pipe 24 and a pressure relief valve 26. The pressure relief valve 26 has an exhaust port 261. The exhaust pipe 24 has an exhaust channel 241 communicating with the exhaust port 261. The upper cover 1 has a second through hole 15, and the exhaust pipe 24 extends out of the upper cover 1 through the second through hole 15. Figure 3 As shown, the exhaust pipe 24 extends beyond the cover 11 of the upper cover 1. A pressure-limiting valve 26 is fitted onto the outside of the exhaust pipe 24 and connected to it. During the steam propulsion process, the pressure-limiting valve 26 either seals or unseales the exhaust passage 241. That is, when the pressure inside the cooking cavity increases due to heating, the generated steam pushes the pressure-limiting valve 26 to activate, opening the exhaust passage 241. The exhaust port 261 connects to the exhaust passage 241, allowing some steam to escape from the pot through the exhaust passage 241 and the exhaust port 261, thus achieving communication between the cooking cavity and the outside of the pot. This ensures that the pressure inside the cooking cavity remains within a safe threshold. Simultaneously, proper steam release allows for precise adjustment of the pressure inside the cooking cavity, preventing excessive pressure from overcooking the food, ensuring cooking quality, and effectively preventing overflow due to excessive pressure, thus maintaining a clean kitchen environment.

[0036] However, the tendency for the venting assembly to become clogged remains a significant technical problem with pressure cookers, especially during cooking operations such as porridge. Thick porridge liquid rises with the steam in the cooking chamber and gradually accumulates inside the venting assembly, eventually forming a blockage that is difficult to clean. This prevents the pressure generated inside the pressure cooking chamber from being released properly, causing the pressure to rise continuously and posing a significant safety risk, potentially seriously threatening the personal safety and property of the user.

[0037] To address the aforementioned problems, this application proposes innovative improvements to the exhaust assembly 2. For details regarding the structure and connections of the exhaust assembly 2 involved in the specific improvements, please refer to [link / reference needed]. Figures 2 to 7 This will be explained in detail below.

[0038] Figure 2 An exploded view of the top cover assembly 100 is shown. The exhaust assembly 2 also includes a fixing cover 21, an anti-clogging cover 22, and fasteners 25. The fixing cover 21 has an integrally formed first top wall 213 and a first peripheral side wall 214. The first peripheral side wall 214 extends around the peripheral edge of the first top wall 213, thereby forming an inner cavity 212 structure with an opening. The design of the fixing cover 21 provides a foundation and a stable support frame for the entire exhaust assembly 2. The anti-clogging cover 22 has an integrally formed second top wall 223 and a second peripheral side wall 224. The second peripheral side wall 224 extends around the peripheral edge of the second top wall 223, such that the second top wall 223 and the second peripheral side wall 224 form a receiving chamber 225. The second peripheral side wall 224 of the anti-clogging cover 22 is provided with a vent 222.

[0039] Please refer to Figure 3 The assembly cross-sectional view of the upper cover assembly 100 shown is as follows: Figure 4 The diagram shows the assembly of the upper cover assembly 100. The aforementioned fixing cover 21 and anti-blocking cover 22 are located on the steel cover 13 side of the upper cover 1, and the pressure relief valve 26 is located on the face cover 11 side of the upper cover 1. During the above-described structural installation, one end of the exhaust pipe 24 is fitted onto the pressure relief valve 26. Preferably, the exhaust pipe 24 has a stepped portion 242, which is formed around the central axis of the exhaust pipe 24 on the outer side wall of the exhaust pipe 24. The stepped portion 242 is securely connected to the face cover 11 via a flat washer 27. This not only ensures the connection strength between the exhaust pipe 24 and the face cover 11 but also provides a certain sealing effect, preventing steam leakage from the connection between the exhaust pipe 24 and the face cover 11. Further, as... Figures 4 to 6As shown, the first top wall 213 of the fixed cover 21 is provided with a first through hole 215 communicating with the second through hole 15. The upper cover 1 is provided with the second through hole 15, which penetrates the face cover 11, the inner cover 12, and the steel cover 13. The other end of the exhaust pipe 24 passes through the second through hole 15 and the first through hole 215 in sequence, and extends into the inner cavity 212 of the fixed cover 21. The fastener 25 is located in the inner cavity 212 and is connected to the exhaust pipe 24 to install and fix the fixed cover 21 to the upper cover 1 of the cooking appliance. At this time, the fixed cover 21 is pressed against the steel cover 13, and the cavity of the fixed cover 21 is set downward.

[0040] It should be noted that the fastener 25 in this embodiment includes a fixing nut 251 and a washer 252 fitted onto the exhaust pipe 24. The washer 252 is preferably a spring washer, but an annular flat washer is also applicable. The portion of the exhaust pipe 24 extending into the inner cavity 212 is provided with an external thread section that matches the fixing nut 251. The fixing nut 251 is threadedly connected to the exhaust pipe 24, and the washer is sandwiched between the fixing nut 251 and the first top wall 213 of the fixing cover 21.

[0041] To further explain, when the steel cover 13 is configured as a hollow ring-shaped steel ring, the fixing cover 21 will abut against and fix on the inner cover 12, forming a tight connection with the inner cover 12, and can also provide a stable installation base for the entire exhaust assembly 2.

[0042] In this embodiment, please refer to Figure 4 The aforementioned fixed cover 21 further includes a first fastening portion 211, which protrudes from the outer side of the first peripheral sidewall 214. The anti-clogging cover 22 includes a second fastening portion 221, which protrudes from the second peripheral sidewall 224 toward the receiving chamber 225. In actual assembly, the anti-clogging cover 22 is fitted onto the outer side of the fixed cover 21, and by fastening the first fastening portion 211 and the second fastening portion 221, the fixed cover 21 and the anti-clogging cover 22 can be tightly connected. At the same time, a gap flow channel 23 that can communicate with the inner cavity 212 is formed between the fixed cover 21 and the anti-clogging cover 22. This gap flow channel 23 can be connected to the outer side of the anti-clogging cover 22 through the vent 222, and the exhaust port 261 of the pressure relief valve 26 is connected to the inner cavity 212 of the fixed cover 21 through the exhaust channel 241. Understandably, when the top cover 1 is closed on the pot body, the space outside the anti-blocking cover 22 is the internal space of the pot body.

[0043] Based on the above structure and connections, we can see that: Please refer to... Figure 5During the operation of the cooking appliance, as the pressure inside the pot continuously increases, a large amount of steam is generated. The steam initially enters the gap flow channel 23 from inside the pot through the vent 222. Through this gap flow channel 23, the steam orderly enters the inner cavity 212 of the fixed cover 21. In the inner cavity 212 of the fixed cover 21, the steam further converges and flows towards the exhaust channel 241. Finally, guided by the exhaust channel 241, the steam is discharged from the pot through the exhaust port 261 of the pressure limiting valve 26 at a specific pressure and flow rate, thereby achieving effective control of the pressure inside the cooking cavity and safe steam discharge. During the cooking process, the thick porridge liquid inside the cooking cavity rises with the steam flow. Thanks to the structure of the anti-clogging cover 22, once the porridge liquid comes into contact with the anti-clogging cover 22, it is confined to the outside of the anti-clogging cover 22. The structure of the anti-clogging cover 22 effectively prevents the porridge liquid from directly seeping into and continuously accumulating in the inner cavity 212, thereby preventing blockage of the exhaust channel 241 due to the formation of deposits.

[0044] Because the exhaust channel 241 is not easily blocked, the pressure inside the cooking chamber can always be discharged normally through the exhaust assembly 2 according to the predetermined pressure release mechanism. This not only reduces the safety hazard of overflow caused by abnormal pressure rise in the cooking chamber, ensuring the safe operation of the cooking appliance, avoiding food waste, helping to maintain a clean and hygienic kitchen environment, and improving the user's cooking experience, but also avoids the negative impact on cooking quality caused by pressure runaway due to blockage of the exhaust channel 241. For example, it prevents the food from being overcooked due to excessive pressure, ensuring the stability and reliability of the cooking effect.

[0045] Preferably, please refer to the following for details. Figure 4 and Figure 5 As shown, the vent 222 is located on the side of the first engaging part 211 facing away from the cavity opening of the fixed cover 21. This position of the vent 222 allows steam to enter through it and flow within the relatively narrow and tortuous space formed between the first engaging part 211 and the second engaging part 221. Due to the obstruction and guiding effect of the two engaging parts, the steam cannot directly reach the inner cavity 212 of the fixed cover 21. Instead, it needs to meander along the gap between the engaging parts and the space between the fixed cover 21 and the anti-blocking cover 22, thus increasing the length of the flow path and significantly increasing the steam's travel distance within the gap channel 23. This, in turn, alleviates the steam pressure to a certain extent, ensuring a relatively stable pressure entering the inner cavity 212, which helps to more accurately control the pressure within the cooking cavity.

[0046] Furthermore, due to the relatively long gap channel 23, the steam velocity gradually decreases during flow. According to fluid mechanics principles, solid particles in the porridge are more easily separated from the steam flow by gravity and settle on the outside of the anti-clogging cover 22. This process effectively reduces the possibility of porridge entering the inner cavity 212 and blocking the exhaust channel 241, further ensuring the smooth operation of the exhaust system and reducing safety risks.

[0047] In actual cooking, a very small amount of porridge liquid may enter the vent 222 with the steam. When a small amount of porridge liquid enters through the vent 222, due to the relatively narrow and tortuous space formed between the first locking part 211 and the second locking part 221, the solid particles in the porridge liquid may indeed settle between the first locking part 211 and the second locking part 221, or on the second top wall 223 of the receiving chamber 225, due to the flow direction of the steam and the effect of gravity.

[0048] However, due to the presence of the anti-clogging cover 22 and the meandering flow path of the steam, the porridge liquid is unlikely to accumulate in large quantities and continuously permeate towards the exhaust channel 241. Furthermore, because the steam travels a longer distance and slows down within the gap channel 23, more solid particles of the porridge liquid will settle outside the anti-clogging cover 22. The amount of porridge liquid entering between the two interlocking parts or on the second top wall 223 is extremely limited and insufficient to form an accumulation that blocks the exhaust channel 241. Therefore, from the perspective of overall anti-clogging effect, this structural design effectively reduces the risk of exhaust blockage to a large extent, ensuring the safe and stable operation of the cooking appliance.

[0049] Preferably, please refer to the following for details. Figure 7 Multiple vents 222 are configured, and these vents 222 are evenly distributed around the central axis of the exhaust pipe 24 in the valve core assembly 24 on the second circumferential sidewall 224 of the anti-clogging cover 22. This arrangement not only allows the steam generated inside the pot to enter the gap flow channel 23 more evenly in the circumferential direction, but also helps to ensure the flow stability of steam in the entire gap flow channel 23, ensuring that the steam pressure distribution is relatively consistent. This, in turn, makes the steam convergence in the inner cavity 212 of the fixed cover 21 more stable, which helps the pressure limiting valve 26 to accurately control the pressure in the cooking cavity and maintain a stable pressure in the cooking cavity during the cooking process.

[0050] Furthermore, multiple vents 222 are provided on the anti-clogging cover 22. On the one hand, this increases the number of steam inlets entering the gap channel 23. Not only is the steam flow rate handled by each vent 222 relatively small under the same steam flow rate, but the impact and carrying capacity of the porridge liquid entering the vent 222 with the steam are also relatively weakened, reducing the possibility of the porridge liquid penetrating deep into the gap channel 23. Even if a small amount of porridge liquid enters through some of the vents 222, since the other vents 222 can still work normally, the overall steam discharge and pressure control functions will not be affected by the temporary blockage of individual vents 222.

[0051] On the other hand, after the steam enters from multiple uniformly distributed inlets, the flow field formed within the gap channel 23 becomes more complex and uniform. This complex flow field helps to break the laminar flow state that the steam might otherwise exhibit, increasing the degree of turbulence within the steam. According to Stokes' law, in a turbulent environment, solid particles in the slurry are more easily separated from the steam due to the shear force and buoyancy of the fluid, settling on the outside of the anti-clogging cover 22. This better achieves the separation of steam and slurry, improves the anti-clogging effect, and ensures the smooth operation of the exhaust assembly 2.

[0052] In this embodiment, the first engaging portion 211 is a raised strip surrounding the exhaust pipe 24, preferably with a semi-circular cross-sectional shape. The raised strip extends around the central axis of the fixing cover 21 and is disposed on the first peripheral sidewall 214 of the fixing cover 21. This raised strip structure can be formed on the first peripheral sidewall 214 of the fixing cover 21 using a stamping process. The second engaging portion 221 is a raised bulge, preferably hemispherical, and is also preferably formed on the second peripheral sidewall 224 of the anti-clogging cover 22 using a stamping process. Thus, when the raised bulge engages with the raised strip, the contact is usually point contact or a small surface contact. This small contact area makes it easier to adjust the relative position between the raised bulge and the raised strip. When a certain external force is applied to bring them into contact, the shape of the raised bulge can guide the raised strip into place smoothly due to its guiding properties. Because the contact area is small, the raised strip experiences relatively little resistance after contacting the raised bulge, allowing for fine-tuning within a small range to achieve accurate engagement.

[0053] In other embodiments, the first fastening part 211 may also be configured as a convex hull, and the second fastening part 221 may be configured as a corresponding convex strip, which also has the above-mentioned technical effects.

[0054] Understandably, besides the hemispherical convex convex convex rim and the semi-circular cross-section convex rim described above, there are several other feasible design schemes for the convex convex rim and convex slats. For example, the convex rim can be designed as an ellipsoid, with its longer axis arranged along the circumferential direction of the fixed cover 21 or the anti-clogging cover 22. This ellipsoidal convex rim can provide different contact and force conditions in different directions when engaging with the convex slats, increasing the stability of the connection. At the same time, the cross-section of the convex slats can be designed as trapezoids, with the width of the upper base being smaller than the width of the lower base, and the upper base facing the inner side of the anti-clogging cover 22 or the fixed cover 21. This trapezoidal cross-section convex slats form a tighter contact with the ellipsoidal convex rim during engagement, effectively preventing relative displacement between the fixed cover 21 and the anti-clogging cover 22, further improving the overall performance and reliability of the exhaust assembly 2. Furthermore, the convex bulge can be designed with a certain taper, such as a cone, frustum, triangular pyramid, or quadrangular pyramid, with its large end connected to the anti-blocking cover 22 or the fixing cover 21, and its small end facing the other. This taper design can provide better guidance during assembly, and through reasonable angle and size design, it can also achieve a firm connection and sealing effect.

[0055] It should also be noted that, please refer to Figure 7 The exhaust pipe 24 in the valve core assembly 24 has multiple protrusions evenly distributed around its central axis. This even distribution of multiple protrusions makes the connection between the fixed cover 21 and the anti-clogging cover 22 more stable and balanced. During the operation of the exhaust assembly 2, when subjected to steam pressure and potential liquid impact, the even distribution of multiple protrusions can evenly disperse these external forces, preventing excessive local stress that could lead to loosening or damage to the connection, thus ensuring the reliability and stability of the exhaust assembly 2 during long-term use.

[0056] Furthermore, the evenly distributed convex bulges, along with the evenly distributed vents 222, further optimize the steam flow within the gap channel 23. After the steam enters the gap channel 23 through the vents 222, the presence of multiple convex bulges makes the steam flow path within the channel more complex and variable, increasing the chances of collision and friction between the steam and the bulges. This complex flow path and collision friction not only help to further reduce the steam velocity but also make the pressure distribution of the steam within the gap channel 23 more uniform. This provides a more stable steam environment for the pressure relief valve 26 to accurately control the pressure within the cooking chamber, thereby improving the accuracy and stability of the cooking appliance's pressure control within the cooking chamber during cooking, ensuring cooking quality and safety.

[0057] As a preferred embodiment, please refer to the following for details. Figures 4 to 6As shown, the aforementioned fixing cover 21 also includes a skirt portion 216, which can be designed as a folded edge, rolled edge, or bent edge according to actual needs. When the skirt portion 216 is a folded edge, it is formed by folding outward a certain angle of the material of the first peripheral sidewall 214 of the fixing cover 21 near the cavity opening of the inner cavity 212; if it is a rolled edge, it is formed by rolling the material into a specific shape; and if it is a bent edge, it is formed by bending the material into an edge-like structure at a certain angle. Regardless of the form adopted, the skirt portion 216 is bent from the first peripheral sidewall 214 toward the anti-blocking cover 22 and is located near the cavity opening of the inner cavity 212.

[0058] During the installation of the anti-clogging cover 22 onto the fixed cover 21, the skirt portion 216 initially abuts or engages tightly with the second fastening portion 221. As a continuous force is applied to the anti-clogging cover 22, causing it to move towards the steel cover 13, the first fastening portion 211 on the fixed cover 21 will smoothly engage with the second fastening portion 221 of the anti-clogging cover 22 as the anti-clogging cover 22 gradually approaches. In this process, the skirt portion 216 not only acts as a guide, providing initial positioning and guidance for the installation of the anti-clogging cover 22 and reducing assembly difficulty, but it also makes it easier to align the anti-clogging cover 22 with the fixed cover 21 during installation, reducing potential deviations and errors during assembly and improving assembly efficiency. Simultaneously, the tight abutment or engagement of the skirt portion 216 with the second fastening portion 221 also increases the tightness and stability of the connection between the fixed cover 21 and the anti-clogging cover 22 to a certain extent, ensuring the reliability of the exhaust assembly 2 during operation.

[0059] Furthermore, the presence of the skirt portion 216 further optimizes the flow of steam within the gap channel 23. That is, after steam enters the gap channel 23 from the vent 222, in addition to being affected by the first and second latching portions 211, the steam's flow direction changes as it passes through the skirt portion 216, creating a more complex flow field. This increases the steam's travel distance and residence time within the gap channel 23, further reducing the risk of blockage in the exhaust passage 241 and ensuring the smooth operation of the exhaust system. Simultaneously, the skirt portion 216 enhances structural strength. Whether it's a flanged, rolled, or bent edge, it increases the material thickness and structural complexity of the first circumferential sidewall 214 of the fixed cover 21 near the cavity opening, thereby improving the overall structural strength and durability of the fixed cover 21 and extending the service life of the exhaust assembly 2.

[0060] In addition, please refer to the specific details. Figures 4 to 6As shown, the anti-clogging cover 22 also includes an anti-slip portion 226, which protrudes towards the side facing away from the anti-clogging cover 22. The anti-slip portion 226 can be designed in various shapes and structures according to actual needs. For example, it can be designed as regular striped protrusions, with these stripes evenly distributed along the circumference or axial direction of the anti-clogging cover 22; it can also be designed as dotted protrusions, with multiple dotted protrusions distributed irregularly or regularly on the surface of the side of the anti-clogging cover 22 facing away from the anti-clogging cover 22; or it can be a wavy, grid-like, or other shaped protrusion structure. Understandably, the protrusion height and shape of the anti-slip portion 226 can be reasonably designed according to actual conditions to ensure that while providing a good anti-slip effect, it does not adversely affect the overall structure and appearance of the cooking utensil cover assembly 100.

[0061] On the one hand, during the daily use and maintenance of cooking utensils, when it is necessary to disassemble, install, or adjust the anti-clogging cover 22, the anti-slip part 226 can increase the friction between the operator's hand and the anti-clogging cover 22. For example, when the operator's hand grips the anti-clogging cover 22, the raised structure of the anti-slip part 226 can embed into the surface of the hand's skin, making the contact between the hand and the anti-clogging cover 22 more secure and less prone to relative slippage. This not only improves the convenience of operation, allowing the operator to grip the anti-clogging cover 22 more stably, but also prevents the anti-clogging cover 22 from falling or being damaged due to slippage during operation, thus ensuring the safety of operation.

[0062] On the other hand, the anti-slip part 226 can increase the material thickness and structural complexity of this part of the anti-blocking cover 22 to a certain extent, thereby further improving the overall structural strength and rigidity of the anti-blocking cover 22, so that the anti-blocking cover 22 can better maintain its shape and structural integrity when facing external forces, and is not easily deformed or damaged.

[0063] Furthermore, as a preferred embodiment, please refer to the following for details. Figures 2 to 5 As shown, the exhaust assembly 2 also includes a valve cover 28, which is positioned over the outside of the pressure relief valve 26 and connected to the face cover 11 of the upper cover 1. The face cover 11 has a groove for fitting the valve cover 28. Preferably, a sealing ring is fitted onto the outer part of the valve cover 28 that fits into the groove. Due to the elastic compression properties of the sealing ring, the valve cover 28 is secured in the groove by the sealing ring. This not only ensures that the valve cover 28 is securely installed on the top of the upper cover, but also effectively prevents steam from leaking from the connection between the valve cover 28 and the face cover 11, ensuring that steam can be discharged strictly according to the predetermined path, thus laying a solid foundation for the safety and stability of the cooking process.

[0064] For further details, please refer to Figure 5The valve cover 28 has an inner cavity 281 and a discharge port connecting to the inner cavity 281, which in turn connects to the vent hole 261 of the pressure-limiting valve 26. When the cooking appliance is in operation, the steam in the cooking chamber is guided by the exhaust channel 241 through the vent hole 261 and then enters the inner cavity 281 of the valve cover 28, finally exiting from the discharge port of the valve cover 28. This not only provides good protection for the pressure-limiting valve 26, preventing it from being directly exposed to the outside and suffering from collisions or damage, thus extending the service life of the pressure-limiting valve 26, but also the unique exhaust structure formed by the valve cover 28 and the pressure-limiting valve 26 further regulates the steam discharge path, guiding the steam to be discharged in an orderly and stable manner, effectively avoiding safety hazards such as burns that may be caused by disordered steam discharge, and comprehensively improving the user experience and safety of the cooking appliance.

[0065] The above is an explanation of the exhaust component 2 proposed in the embodiments of this application. Since the top cover component 100 and the cooking appliance proposed in the embodiments of this application adopt all the technical solutions of all the above embodiments, they have at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be repeated here.

[0066] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0067] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A top cover assembly, characterized in that, include: Top cover; The fixing cover includes a first fastening part and has an inner cavity with the opening facing downward; An anti-clogging cover includes a second fastening part and a vent. The anti-clogging cover is sleeved on the outside of the fixed cover, and the first fastening part is fastened to the second fastening part, so that the fixed cover and the anti-clogging cover form a gap flow channel that can communicate with the inner cavity. The gap flow channel is connected to the outside of the anti-clogging cover through the vent. An exhaust pipe passes through the upper cover and has an exhaust passage that communicates with the inner cavity; and, Fasteners, located in the inner cavity and connected to the exhaust pipe, are used to lock the retaining cover onto the upper cover.

2. The upper cover assembly as claimed in claim 1, characterized in that, The vent is located on the side of the first fastening part that faces away from the cavity.

3. The upper cover assembly as described in claim 1 or 2, characterized in that, The ventilation ports are configured in multiple ways, and the multiple ventilation ports are evenly distributed around the exhaust pipe on the anti-clogging cover.

4. The upper cover assembly as claimed in claim 1, characterized in that, One of the first and second fastening portions is configured as a protrusion, and the other of the first and second fastening portions is configured as a protrusion surrounding the exhaust pipe, and the protrusion engages with the protrusion.

5. The upper cover assembly as described in claim 4, characterized in that, The convex humps are configured in multiple ways, and the multiple convex humps are evenly distributed around the exhaust pipe.

6. The cover assembly as claimed in claim 1, 4, or 5, characterized in that, The fixing cover also includes: The skirt edge is bent towards the anti-blocking cover and is located on the side close to the cavity opening.

7. The cover assembly as claimed in claim 1, 4, or 5, characterized in that, The anti-clogging cover also includes: The anti-slip part is provided with a protrusion on the side opposite to the anti-blocking cover.

8. The top cover assembly as claimed in claim 1, characterized in that, The fasteners include: A fixing nut is used to thread the exhaust pipe; and A washer is fitted onto the exhaust pipe and sandwiched between the fixing nut and the fixing cover.

9. The upper cover assembly as claimed in claim 1, characterized in that, Also includes: A pressure relief valve is provided with a vent hole, which is sleeved on the vent pipe and used to open or block the vent passage. In the open state, the vent hole is connected to the vent passage. and A valve cover, connected to the upper cover and placed on the outside of the pressure relief valve, the valve cover having an inner cavity and a discharge port communicating with the inner cavity, the inner cavity communicating with the exhaust port.

10. A cooking utensil, characterized in that, include: Pot body; The cover assembly according to any one of claims 1 to 9 is detachably disposed on the pot body.

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