Spill-proof pot cover assembly for cooking utensil

Abstract

The anti-overflow pot cover assembly comprises a pot cover and a steam valve assembly arranged on the pot cover, the steam valve assembly comprises a top cover, a bottom cover, a steam inlet pipe and a valve cavity formed between the top cover and the bottom cover, and the steam inlet pipe is provided with a steam inlet channel communicating with a cooking cavity of the cooking utensil and the valve cavity; the steam inlet channel is provided with a first steam inlet and a first steam outlet, the top cover is provided with a steam exhaust channel communicated with the outside, the steam exhaust channel is provided with a second steam inlet and a second steam outlet, the first steam outlet and the second steam inlet are transversely communicated, and the first steam outlet and the second steam inlet are arranged in a spaced mode in the transverse direction. And a shunting gap is formed between the first steam outlet and the second steam inlet. The first steam outlet and the second steam inlet are transversely and directly arranged, so that steam can directly enter the steam exhaust channel after being exhausted from the steam inlet channel, the steam exhaust efficiency is guaranteed, rice soup and the like after bubble breaking can fall back into the valve cavity under the action of gravity due to the existence of the flow dividing gap, and the risk of overflowing of a pot is greatly reduced.

Description

Technical Field

[0001] This application belongs to the field of kitchen utensil technology, specifically relating to an anti-overflow pot lid assembly for cooking utensils. Background Technology

[0002] When a rice cooker is cooking, a large amount of steam is generated inside the cooking cavity. This steam is released through the steam valve located on the lid. When cooking rice porridge or similar dishes, a lot of bubbles are produced. If the cooking heat is too high or continuous high heat is used, the bubbles, mixed with rice water, will overflow from the vent. This not only adds to the cleaning burden but also, if the steam valve is not cleaned promptly, the rice water at the vent will solidify, making cleaning even more difficult and potentially causing blockage and preventing venting. Using low heat to reduce heating power will result in longer cooking times, negatively impacting the user experience.

[0003] Existing technology discloses a lid for a rice cooker, including a lid plate and a steam valve disposed on the lid plate. The steam valve has a steam venting chamber, a steam inlet channel connecting the steam venting chamber and the cooking chamber of the rice cooker, and a steam vent connecting the steam venting chamber and the outside. The steam inlet channel includes a steam inlet and a steam outlet. The steam vent is located on the side opposite to the steam outlet direction. Although this setting can achieve the effect of breaking bubbles and preventing overflow by extending the steam discharge path, the opposite-facing setting will result in insufficient steam discharge. Effective steam discharge is crucial for maintaining the pressure balance inside the pot and the cooking quality of the food. When the steam discharge is not smooth, it will affect the cooking efficiency and cooking effect. Utility Model Content

[0004] This application provides an anti-overflow pot lid assembly for cooking appliances to solve the technical problem that existing pot lids for cooking appliances have low steam emission efficiency and poor anti-overflow effect, which makes it impossible to perform high-power cooking.

[0005] The technical solution adopted in this application is as follows:

[0006] An anti-overflow pot lid assembly for a cooking appliance includes a pot lid and a steam valve assembly disposed on the pot lid. The steam valve assembly includes a top cover, a bottom cover, a steam inlet pipe, and a valve cavity formed between the top cover and the bottom cover. The steam inlet pipe has a steam inlet channel communicating with the cooking cavity of the cooking appliance and the valve cavity. The steam inlet channel has a first steam inlet and a first steam outlet. The top cover has an exhaust channel communicating with the outside. The exhaust channel has a second steam inlet and a second steam outlet. The first steam outlet and the second steam inlet are laterally connected and are spaced laterally to form a flow divider gap between the first steam outlet and the second steam inlet.

[0007] In this application, the first steam outlet of the steam inlet channel and the second steam inlet of the steam exhaust channel are arranged horizontally opposite each other, so that the steam can directly enter the steam exhaust channel after being discharged from the steam inlet channel, effectively ensuring the steam discharge efficiency and avoiding the risk of a sudden increase in pressure in the cooking cavity due to poor steam discharge. Furthermore, the lateral gap between the first steam outlet and the second steam inlet allows steam carrying food particles such as rice water to enter the space between them before exiting through the first steam outlet and entering the second steam inlet. This lateral gap alters the temperature and pressure fields of the steam throughout its flow path. On one hand, it helps to cool the steam to a certain extent, thereby reducing the temperature of the steam discharged to the outside. On the other hand, the pressure change slows down the steam, thus reducing the noise generated during steam discharge. The temperature and pressure changes experienced by the steam during its flow also affect the forces acting on the bubbles, such as inertial forces and condensation forces, which helps to break the bubbles at the lateral gap. Due to the existence of the flow divider gap, the broken rice water and other food particles can fall back into the valve cavity under the action of gravity, significantly reducing the risk of overflow.

[0008] The valve cavity is provided with a baffle extending toward the first steam outlet and cooperating with the top cover to form the exhaust channel, and a guide rib connected to the baffle and extending toward the bottom cover. The guide rib and the outer wall of the steam inlet pipe cooperate to form a guide channel communicating with the diversion gap.

[0009] In this technical solution, the baffle extends towards the first steam outlet and cooperates with the top cover to form a steam exhaust channel, achieving a compact structural layout and avoiding the formation of narrow gaps within the valve cavity. This facilitates thorough cleaning of all parts of the valve cavity, preventing the accumulation of dirt and grime. Furthermore, the extended arrangement of the baffle towards the first steam outlet guides the steam flow, facilitating smooth flow from the first steam outlet to the second steam inlet, reducing steam flow turbulence and noise, thus lowering steam exhaust noise and improving steam flow efficiency. By setting drainage ribs connected to the baffle and extending towards the bottom cover, this technical solution can cooperate with the outer wall of the steam inlet pipe to form a drainage channel communicating with the flow divider gap. This allows for the drainage of condensate, heavier foam, and rice water that drips after foam breakage, preventing splashing and increased cleaning burden.

[0010] There is a flow gap between the drainage rib and the top wall of the bottom cover, and the partition rib, the drainage rib and the side wall of the valve cavity cooperate to form a temporary storage cavity with a bottom opening.

[0011] In this technical solution, the existence of the flow gap and the temporary storage chamber provides a flow path and temporary storage space for condensate, soup after foaming, etc. As soup and condensate accumulate, the temporary storage chamber provides temporary storage space for such liquids. By making full use of the space in the valve chamber, liquid storage is achieved, which greatly reduces the probability of fluid overflowing through the exhaust channel.

[0012] The top wall of the bottom cover facing the valve cavity has several protruding structures.

[0013] This technical solution, by setting a protruding structure on the top wall of the bottom cover facing the valve cavity, can physically intervene in the bubbles falling through the diversion gap, promote bubble bursting, improve bubble bursting efficiency, prevent bubble accumulation, thereby reducing the phenomenon of sudden pressure release caused by bubbles, as well as the noise problem and soup splashing problem caused by this phenomenon, effectively improving the user experience.

[0014] The protruding structure includes a fixed end that is fixedly connected to the top wall of the bottom cover and a free end away from the fixed end. The cross-sectional area of ​​the protruding structure gradually decreases from the fixed end to the free end to form a bubble-breaking puncture.

[0015] In this technical solution, the raised structure is set as a bubble-breaking spike. On the one hand, it helps to accelerate the bursting of bubbles and further improve the bubble-breaking efficiency. On the other hand, the change in the cross-sectional area of ​​the raised structure allows a bottom-up flaring structure to be formed between two adjacent bubble-breaking spikes. Even if solid particles such as rice grains fall into the gap between the bubble-breaking spikes, the flaring structure makes it easy for users to thoroughly clean the bottom cover, avoiding the accumulation of particles between the bubble-breaking spikes and causing mold growth.

[0016] The bottom cover is provided with a reflux hole and a reflux valve. The reflux valve is movably provided on the bottom cover to open or close the reflux hole.

[0017] In this technical solution, the arrangement of the reflux orifice and reflux valve allows the reflux valve to rise and close the reflux orifice when the pressure inside the cooking chamber rises to a certain threshold, thus preventing the steam inside the valve chamber from flowing back. When the pressure inside the cooking chamber drops to a certain threshold, the reflux valve descends under its own weight and the weight of the liquid inside the valve chamber to open the reflux orifice, facilitating the discharge of the liquid accumulated inside the valve chamber.

[0018] The reflux valve includes a valve body and an anti-overflow valve plate fixedly connected to the valve body. The anti-overflow valve plate extends laterally so that the projection of the steam inlet passage on the horizontal plane at least partially falls within the projection range of the anti-overflow valve plate on the horizontal plane.

[0019] In this technical solution, the anti-overflow valve increases the contact area between the steam in the cooking chamber and the reflux valve, allowing the reflux valve to float more smoothly under the pressure within the cooking chamber. The valve body provides guidance for the overall vertical movement of the reflux valve, preventing jamming. The anti-overflow valve extends laterally so that the projection of the steam inlet channel on the horizontal plane at least partially falls within the projection range of the anti-overflow valve on the horizontal plane. That is, the anti-overflow valve can at least partially block the steam inlet channel in the horizontal direction, so that when the steam rises and flows into the steam inlet channel, it needs to bypass the outer periphery of the anti-overflow valve near the steam inlet channel, creating a flow bend. The presence of the bend can act as the first bubble-breaking barrier for steam outflow, further improving the anti-overflow effect.

[0020] The steam inlet pipe includes a straight pipe section and a bend pipe section that are interconnected. The first steam inlet is located upstream of the straight pipe section, and the first steam outlet is located downstream of the bend pipe section. The side wall of the straight pipe section is provided with a steam inlet notch, which constitutes at least a portion of the area of ​​the first steam inlet.

[0021] In this technical solution, the steam inlet pipe includes a straight section and a bend, causing the steam to encounter a bend as it flows from the first steam inlet to the first steam outlet. This change in flow direction may generate turbulence, which helps to break bubbles and improves the bubble-breaking and overflow prevention effect. A steam inlet notch is provided on the side wall of the straight section, forming at least a portion of the first steam inlet area. This ensures that the steam also encounters a bend as it flows from the notch into the straight section. The presence of this bend can break some bubbles, reducing the probability of bubbles entering the steam inlet channel and improving the overflow prevention effect.

[0022] The pot lid includes a liner and an inner cover detachably mounted on the liner, and the steam inlet pipe is mounted on the inner cover;

[0023] The top cover and the liner are integrally formed to form part of the liner; or, the top cover and the liner are separately formed, and the liner is provided with an exhaust port that connects the second steam outlet to the outside.

[0024] In this technical solution, the steam inlet pipe is installed on the inner cover, allowing it to be removed from the liner along with the inner cover. This facilitates thorough cleaning of the steam inlet pipe and prevents dirt and grime from accumulating inside. When the top cover and liner are integrally molded, it reduces structural components, lowers processing costs, and streamlines assembly processes. It also allows for a compact overall layout of the pot lid assembly. For a pot lid of the same volume, this increases the volume of the valve chamber, thereby extending the steam flow path, breaking bubbles, and reducing the rate of steam emission.

[0025] The pot lid includes a liner and an inner cover detachably mounted on the liner, and the steam inlet pipe is mounted on the inner cover;

[0026] The bottom cover and the inner cover are integrally formed to constitute part of the inner cover; or, the bottom cover and the steam inlet pipe are integrally formed, and the inner cover is provided with an installation port for installing the bottom cover and the steam inlet pipe.

[0027] In this technical solution, the steam inlet pipe is installed on the inner cover, allowing it to be removed from the liner along with the inner cover. This facilitates thorough cleaning of the steam inlet pipe and prevents dirt and grime from accumulating inside. When the bottom cover and inner cover are integrally formed, it reduces structural components, lowers processing costs, and streamlines assembly steps, while also achieving a compact overall layout for the pot lid assembly. Furthermore, the integral forming of the bottom cover and steam inlet pipe reduces the processing difficulty of the inner cover and allows for complete removal and cleaning of both, enhancing the user experience. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a cross-sectional view of a cooking appliance according to one embodiment of this application, wherein the arrow indicates the direction of fluid flow;

[0030] Figure 2 This is a cross-sectional view of a portion of the pot lid assembly structure according to one embodiment of this application, wherein the arrow direction indicates the flow direction of the fluid;

[0031] Figure 3 This is a cross-sectional view of the liner according to one embodiment of this application;

[0032] Figure 4 This is a cross-sectional view of the steam inlet pipe and bottom cover assembled according to one embodiment of this application;

[0033] Figure 5 This is a cross-sectional view of a reflux valve according to one embodiment of this application.

[0034] in,

[0035] 1. Liner; 11. Exhaust passage; 111. Second steam inlet; 112. Second steam outlet; 12. Rib; 13. Drainage rib;

[0036] 2. Steam inlet pipe; 21. Straight pipe section; 211. First steam inlet; 212. Steam inlet notch; 22. Bend section; 221. First steam outlet;

[0037] 3. Bottom cap; 31. Bubble puncture; 32. Sealing lip;

[0038] 4. Valve chamber; 41. Temporary storage chamber; 42. Diversion gap; 43. Drainage channel;

[0039] 5. Inner cover;

[0040] 6. Cooking cavity;

[0041] 7. Reflux valve; 71. Valve body; 72. Anti-overflow valve plate. Detailed Implementation

[0042] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0044] Furthermore, it should be understood in the description of this application 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, and 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, and therefore should not be construed as a limitation of this application.

[0045] In this application, unless otherwise expressly 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 application according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., 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 application. 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 can be combined in any suitable manner in one or more embodiments or examples.

[0047] like Figure 1 and Figure 2 As shown, an anti-overflow pot lid assembly for a cooking appliance includes a pot lid and a steam valve assembly disposed on the pot lid. The steam valve assembly includes a top cover, a bottom cover 3, a steam inlet pipe 2, and a valve cavity 4 formed between the top cover and the bottom cover 3. The steam inlet pipe 2 has a steam inlet channel connecting the cooking cavity 6 of the cooking appliance and the valve cavity 4. The steam inlet channel has a first steam inlet 211 and a first steam outlet 221. The top cover is provided with an exhaust channel 11 communicating with the outside. The exhaust channel 11 has a second steam inlet 111 and a second steam outlet 112. The first steam outlet 221 and the second steam inlet 111 are laterally connected, and the first steam outlet 221 and the second steam inlet 111 are spaced laterally to form a flow divider gap 42 between the first steam outlet 221 and the second steam inlet 111.

[0048] In this application, the first steam outlet 221 of the steam inlet channel and the second steam inlet 111 of the steam exhaust channel 11 are arranged horizontally opposite each other, so that the fluid can directly enter the steam exhaust channel 11 after being discharged from the steam inlet channel, which effectively ensures the steam discharge efficiency and avoids the risk of a sudden increase in pressure in the cooking cavity 6 due to poor steam discharge. Furthermore, the lateral gap between the first steam outlet 221 and the second steam inlet 111 allows steam carrying food particles such as rice soup to enter the space between the first steam outlet 221 and the second steam inlet 111 before the fluid is discharged from the first steam outlet 221 and enters the second steam inlet 111. The existence of this lateral gap causes changes in the temperature and pressure fields of the fluid throughout the flow path. On the one hand, this helps to cool the steam to a certain extent, thereby reducing the temperature of the steam discharged to the outside. On the other hand, the pressure change can slow down the steam, thereby helping to reduce the noise generated when the steam is discharged. The temperature and pressure changes experienced by the fluid during the flow process also affect the forces on the bubbles, such as inertial force and condensation force, which helps to break the bubbles at the lateral gap. Due to the existence of the flow divider gap 42, the rice soup and other food particles after the bubbles are broken can fall back into the valve cavity 4 under the action of gravity, greatly reducing the risk of overflow.

[0049] In a preferred embodiment of this application, the lateral dimension A of the flow divider gap 42 satisfies: A≥10mm. By increasing the lateral dimension of the flow divider gap, the flow path of the fluid from the first steam outlet 221 to the second steam inlet 111 can be extended, thereby providing a more suitable distance for the separation of bubbles and steam, and making the separation of bubbles and steam more thorough.

[0050] The exhaust passage 11 in this application can be constructed using any of the following embodiments:

[0051] Implementation Method 1: This implementation method is not illustrated. In this implementation method, the top cover is provided with an exhaust pipe, which is hollow inside to form an exhaust channel. The exhaust pipe has a transverse section, and the free end of the transverse section is provided with a second steam inlet.

[0052] Implementation Method Two: (e.g.) Figure 2 and Figure 3 As shown, the valve cavity 4 is provided with a baffle 12 extending toward the first steam outlet 221 and cooperating with the top cover to form a steam exhaust channel 11. In this second embodiment, the baffle 12 extending toward the first steam outlet 221 and cooperating with the top cover to form a steam exhaust channel 11 achieves a compact structural layout and avoids the formation of a narrow and cramped gap in the valve cavity 4. This facilitates thorough cleaning of all parts of the valve cavity 4 by the user, preventing the accumulation of dirt and grime. Moreover, the extended arrangement of the baffle 12 toward the first steam outlet 221 can guide the steam flow, facilitating the smooth flow of steam from the first steam outlet 221 to the second steam inlet 111, reducing the chaos and turbulence of steam flow, thereby reducing the noise of steam discharge and improving the efficiency of steam flow.

[0053] In this second embodiment, the direction of extension of the rib 12 toward the first steam outlet 221 is not limited: in one embodiment, such as Figure 2 As shown, the baffle 12 extends horizontally toward the first steam outlet 221, and the area where the top cover and the baffle 12 cooperate to form the second steam inlet 111 also extends horizontally, so that the second steam inlet 111 of the exhaust passage 11 has a constant diameter structure. In another embodiment, the baffle 12 extends obliquely downward toward the first steam outlet 221, and the area where the top cover and the baffle 12 cooperate to form the second steam inlet 111 extends horizontally or obliquely upward from the side away from the first steam outlet 221 toward the side closer to the steam outlet, so that the second steam outlet 112 has a flared structure.

[0054] As a preferred embodiment of this second implementation method, such as Figure 2 As shown, the valve cavity 4 is also provided with a flow guide rib 13 connected to the baffle rib 12 and extending towards the bottom cover 3. The flow guide rib 13 and the outer wall of the steam inlet pipe 2 cooperate to form a flow guide channel 43 communicating with the flow divider gap 42. By setting the flow guide rib 13 connected to the baffle rib 12 and extending towards the bottom cover 3, it can cooperate with the outer wall of the steam inlet pipe 2 to form a flow guide channel 43 communicating with the flow divider gap 42. This can guide condensate, heavier foam, and rice water that falls after the foam breaks, avoiding the splashing of fluid after the foam breaks, which would increase the cleaning burden.

[0055] The direction of the drainage ribs is not limited; they can extend vertically or at an angle.

[0056] Furthermore, such as Figure 2As shown, a flow gap exists between the guide rib 13 and the top wall of the bottom cover 3. The baffle rib 12, the guide rib 13, and the side wall of the valve cavity 4 cooperate to form a temporary storage cavity 41 with a bottom opening. The existence of the flow gap and the temporary storage cavity 41 provides a flow path and temporary storage space for condensate, broken-bubble soup, etc. As soup and condensate accumulate, the temporary storage cavity 41 provides temporary storage space for such liquids. By making full use of the space inside the valve cavity 4, liquid storage is achieved, and the probability of fluid overflowing through the exhaust channel 11 is greatly reduced.

[0057] In a preferred embodiment of this application, the valve cavity is provided with an auxiliary bubble-breaking structure to assist in bubble breaking. The auxiliary bubble-breaking structure can be any of the following embodiments:

[0058] Implementation Method 3: This implementation method is not illustrated. In this implementation method, a bubble-breaking mesh is provided between the bottom cover and the flow divider gap, forming an auxiliary bubble-breaking structure. Under the action of gravity, heavier bubbles fall from the flow divider gap, and when the bubbles collide with the bubble-breaking mesh, they will burst. Preferably, the bubble-breaking mesh is snap-fitted to the outside of the steam inlet pipe to facilitate user disassembly and cleaning of the bubble-breaking mesh.

[0059] Implementation Method Four: (e.g.) Figure 2 and Figure 4 As shown, the top wall of the bottom cover 3 facing the valve cavity 4 has several raised structures. These raised structures constitute an auxiliary bubble-breaking structure. By providing raised structures on the top wall of the bottom cover 3 facing the valve cavity 4, physical intervention can be performed on the bubbles falling through the diversion gap 42, promoting bubble breakage, improving bubble-breaking efficiency, and preventing bubble accumulation. This reduces the sudden pressure release caused by bubbles, as well as the noise and splashing problems caused by this phenomenon, effectively improving the user experience.

[0060] As a preferred embodiment of this fourth implementation method, such as Figure 4 As shown, the protruding structure includes a fixed end that is fixedly connected to the top wall of the bottom cover 3, and a free end away from the fixed end. The cross-sectional area of ​​the protruding structure gradually decreases from the fixed end to the free end to form bubble-breaking spikes 31. Setting the protruding structure as bubble-breaking spikes 31 helps to accelerate the bursting of bubbles and further improve the bubble-breaking efficiency. On the other hand, the change in the cross-sectional area of ​​the protruding structure allows a bottom-up flared structure to be formed between two adjacent bubble-breaking spikes 31. Even if solid particles such as rice grains fall into the gaps between the bubble-breaking spikes 31, this flared structure makes it easy for users to thoroughly clean the bottom cover 3, avoiding the accumulation of particles between the bubble-breaking spikes 31 and causing mold growth.

[0061] As a preferred embodiment of this application, such as Figure 2As shown, the bottom cover 3 is provided with a reflux hole and a reflux valve 7. The reflux valve 7 is movably mounted on the bottom cover 3 to open or close the reflux hole. The arrangement of the reflux hole and the reflux valve 7 allows the reflux valve 7 to rise and close the reflux hole when the pressure in the cooking chamber 6 rises to a certain threshold, thus preventing steam backflow in the valve chamber 4. When the pressure in the cooking chamber 6 drops to a certain threshold, the reflux valve 7 descends under its own weight and the weight of the liquid in the valve chamber 4 to open the reflux hole, facilitating the discharge of liquid accumulated in the valve chamber 4.

[0062] In a preferred embodiment, such as Figure 2 As shown, a portion of the bottom cover 3 is sunken to form a recessed collection tank, and several reflux holes are provided on the bottom wall of the collection tank. The recessed arrangement of the collection tank facilitates the collection and treatment of condensed water and broken-foam soup.

[0063] As a preferred embodiment of this implementation, such as Figure 2 and Figure 5 As shown, the reflux valve 7 includes a valve body 71 and an anti-overflow valve plate 72 fixedly connected to the valve body 71. The anti-overflow valve plate 72 extends laterally so that the projection of the steam inlet channel on the horizontal plane at least partially falls within the projection range of the anti-overflow valve plate 72 on the horizontal plane. The anti-overflow valve plate increases the contact area between the steam in the cooking chamber 6 and the reflux valve, allowing the reflux valve to float more smoothly under the pressure in the cooking chamber 6. The valve body 71 provides guidance for the overall vertical movement of the reflux valve, preventing jamming. The anti-overflow valve plate 72 extends laterally so that the projection of the steam inlet channel on the horizontal plane at least partially falls within the projection range of the anti-overflow valve plate on the horizontal plane. That is, the anti-overflow valve plate 72 can at least partially block the steam inlet channel in the horizontal direction, so that when the steam rises and flows into the steam inlet channel, it needs to bypass the outer periphery of the anti-overflow valve plate 72 near the steam inlet channel, creating a flow bend. The presence of the bend can act as the first bubble-breaking barrier for steam outflow, further improving the anti-overflow effect.

[0064] Furthermore, such as Figure 2 As shown, the bottom cover 3 has a positioning port for installing the return valve 7. The anti-overflow valve plate 72 is located below the positioning port, and the valve body 71 passes through the positioning port and floats up and down along the positioning port. The valve body 71 is provided with a stop rib to prevent the valve body 71 from falling out of the positioning port during the up and down movement. At the same time, by compressing and deforming the stop rib under external force, the valve body can be disassembled from the positioning port, thereby realizing the disassembly of the return valve 7 from the bottom cover 3. This facilitates the user's cleaning after disassembly of the return valve 7. In addition, when the return valve is damaged, it can also be disassembled and replaced separately, reducing maintenance costs.

[0065] like Figure 1 and Figure 2As shown, the steam inlet pipe 2 in this application includes a straight pipe section 21 and a bend pipe section 22 that are interconnected. The first steam inlet 211 is located upstream of the straight pipe section 21, and the first steam outlet 221 is located downstream of the bend pipe section 22. The steam inlet pipe 2 includes a straight pipe section 21 and a bend pipe section 22, so that when the steam flows from the first steam inlet 211 to the first steam outlet 221, it will experience a bend. Due to the change in the flow direction, turbulence may be generated, which helps to break bubbles and improve the effect of breaking bubbles and preventing overflow.

[0066] As a preferred embodiment of this application, such as Figure 2 and Figure 4 As shown, the side wall of the straight pipe section 21 is provided with a steam inlet notch 212, which constitutes at least a portion of the first steam inlet 211. By providing the steam inlet notch 212 on the side wall of the straight pipe section 21, which constitutes at least a portion of the first steam inlet 211, the steam flows into the straight pipe section 21 through the steam inlet notch 212 and also encounters a bend. The presence of this bend can break some air bubbles, reducing the probability of bubbles entering the steam inlet channel and improving the overflow prevention effect.

[0067] Furthermore, such as Figure 2 As shown, the anti-overflow valve plate 72 extends laterally so that the entire projection of the straight pipe section 21 on the horizontal plane falls within the projection range of the anti-overflow valve plate 72 on the horizontal plane. That is, the anti-overflow valve plate 72 blocks the bottom end of the straight pipe section 21, and steam enters the steam inlet channel from the steam inlet opening 212. This arrangement can prevent the steam entering from the bottom end of the straight pipe section 21 from colliding with the steam entering from the steam inlet opening 212 at the first steam inlet 211, thus avoiding turbulence and facilitating the smooth discharge of steam.

[0068] In a preferred embodiment of this application, the pot lid includes a liner 1 and an inner cover 5 detachably mounted on the liner 1, with a steam inlet pipe 2 mounted on the inner cover 5. The steam inlet pipe 2 is mounted on the inner cover 5 so that it can be removed from the liner 1 along with the inner cover 5, facilitating thorough cleaning of the steam inlet pipe 2 by the user and preventing dirt and grime from accumulating inside the steam inlet pipe 2.

[0069] This application does not limit the structure of the top cover constituting the steam valve assembly, and it can adopt any of the following embodiments:

[0070] Implementation Method 5: (e.g.) Figure 2 and Figure 3 As shown, the top cover and the liner 1 are integrally formed to form part of the liner 1. This fifth embodiment can reduce structural parts, reduce processing costs, reduce assembly steps, and achieve a compact layout of the pot lid assembly. With a pot lid of the same volume, it helps to increase the volume of the valve cavity 4, thereby helping to extend the steam flow path, achieve bubble breaking, and reduce the steam emission rate.

[0071] Implementation Method Six: This implementation method six is ​​not illustrated. In this implementation method six, the top cover and the liner are formed separately. The liner is provided with a steam vent that connects the second steam outlet to the outside.

[0072] This application does not limit the structure of the bottom cover constituting the steam valve assembly, and it can adopt any of the following embodiments:

[0073] Implementation Method 7: This implementation method 7 is not illustrated. In this implementation method 7, the bottom cover and the inner cover are integrally formed to constitute part of the inner cover.

[0074] Implementation method eight: such as Figure 2 and Figure 4 As shown, the bottom cover 3 and the steam inlet pipe 2 are integrally formed, and the inner cover 5 is provided with an installation port for installing the bottom cover 3 and the steam inlet pipe 2. This design reduces the processing difficulty of the inner cover 5, and allows the bottom cover 3 and the steam inlet pipe 2 to be removed from the inner cover 5 together for thorough cleaning, thus improving the user experience.

[0075] In one embodiment, a seal is sandwiched between the top cover and the bottom cover to prevent steam from escaping from the joint between the top cover and the bottom cover. In another embodiment, such as Figure 2 and Figure 4 As shown, the upper part of the bottom cover 3 is provided with a sealing lip 32. The bottom cover 3 is a plastic or silicone part. The sealing lip 32 and the top cover are sealed by the elasticity of the bottom cover 3 itself, thus eliminating the need for a sealing component.

[0076] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0077] 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.

[0078] The above descriptions are merely embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An anti-overflow pot lid assembly for a cooking appliance, comprising a pot lid and a steam valve assembly disposed on the pot lid, the steam valve assembly comprising a top cover, a bottom cover, a steam inlet pipe, and a valve cavity formed between the top cover and the bottom cover, characterized in that, The steam inlet pipe has a steam inlet channel connecting the cooking chamber of the cooking appliance and the valve chamber. The steam inlet channel has a first steam inlet and a first steam outlet. The top cover has a steam exhaust channel communicating with the outside. The steam exhaust channel has a second steam inlet and a second steam outlet. The first steam outlet and the second steam inlet are laterally connected and are spaced apart laterally to form a flow divider gap between the first steam outlet and the second steam inlet.

2. The anti-overflow lid assembly for cooking appliances according to claim 1, characterized in that, The valve cavity is provided with a baffle extending toward the first steam outlet and cooperating with the top cover to form the exhaust channel, and a guide rib connected to the baffle and extending toward the bottom cover. The guide rib and the outer wall of the steam inlet pipe cooperate to form a guide channel communicating with the diversion gap.

3. The anti-overflow lid assembly for cooking utensils according to claim 2, characterized in that, There is a flow gap between the drainage rib and the top wall of the bottom cover, and the partition rib, the drainage rib and the side wall of the valve cavity cooperate to form a temporary storage cavity with a bottom opening.

4. The anti-overflow lid assembly for cooking appliances according to claim 1, characterized in that, The top wall of the bottom cover facing the valve cavity has several protruding structures.

5. An anti-overflow lid assembly for a cooking utensil according to claim 4, characterized in that, The protruding structure includes a fixed end that is fixedly connected to the top wall of the bottom cover and a free end away from the fixed end. The cross-sectional area of ​​the protruding structure gradually decreases from the fixed end to the free end to form a bubble-breaking puncture.

6. The anti-overflow lid assembly for cooking appliances according to claim 1, characterized in that, The bottom cover is provided with a reflux hole and a reflux valve. The reflux valve is movably provided on the bottom cover to open or close the reflux hole.

7. An anti-overflow lid assembly for a cooking utensil according to claim 6, characterized in that, The reflux valve includes a valve body and an anti-overflow valve plate fixedly connected to the valve body. The anti-overflow valve plate extends laterally so that the projection of the steam inlet passage on the horizontal plane at least partially falls within the projection range of the anti-overflow valve plate on the horizontal plane.

8. An anti-overflow lid assembly for a cooking utensil according to claim 1, characterized in that, The steam inlet pipe includes a straight pipe section and a bend pipe section that are interconnected. The first steam inlet is located upstream of the straight pipe section, and the first steam outlet is located downstream of the bend pipe section. The side wall of the straight pipe section is provided with a steam inlet notch, which constitutes at least a portion of the area of ​​the first steam inlet.

9. A pot lid assembly for an anti-overflow cooking utensil according to any one of claims 1 to 8, characterized in that, The pot lid includes a liner and an inner cover detachably mounted on the liner, and the steam inlet pipe is mounted on the inner cover; The top cover and the liner are integrally formed to form part of the liner; or, the top cover and the liner are separately formed, and the liner is provided with an exhaust port that connects the second steam outlet to the outside.

10. An anti-overflow lid assembly for a cooking utensil according to any one of claims 1 to 8, characterized in that, The pot lid includes a liner and an inner cover detachably mounted on the liner, and the steam inlet pipe is mounted on the inner cover; The bottom cover and the inner cover are integrally formed to constitute part of the inner cover; or, the bottom cover and the steam inlet pipe are integrally formed, and the inner cover is provided with an installation port for installing the bottom cover and the steam inlet pipe.

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