Lid assembly and cooking appliance having the same

Abstract

The application provides a cover assembly and a cooking utensil with the same, wherein the cover assembly comprises a cover, an exhaust pipe penetrating through the cover, a pressure limiting valve arranged above the exhaust pipe, a blockage prevention cover arranged at the inlet of the exhaust pipe, an air inlet hole arranged at the bottom of the blockage prevention cover, an anti-overflow element arranged in the blockage prevention cover and above the air inlet hole, and an overflow passage arranged between the anti-overflow element and the blockage prevention cover or on the anti-overflow element. The technical scheme of the application effectively solves the problem of poor anti-overflow effect in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a cover assembly and a cooking appliance with the same. BACKGROUND

[0002] In the related art, the cooking appliance includes a pot body and a pot cover, a pressure limiting valve is arranged on the pot cover, the pressure limiting valve is sleeved on the exhaust pipe, and a blockage prevention cover or a blockage prevention nut is separately arranged at the inlet of the exhaust pipe, so that the soup in the pot can be prevented from overflowing.

[0003] However, when a large amount of water exists in the cooking process, the blockage prevention cover or the blockage prevention nut cannot effectively prevent the soup from overflowing, resulting in poor anti-overflow effect. SUMMARY

[0004] The main purpose of the present application is to provide a cover assembly and a cooking appliance with the same to solve the problem of poor anti-overflow effect in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a cover assembly is provided, which comprises: a cover; an exhaust pipe passing through the cover; a pressure limiting valve arranged above the exhaust pipe; a blockage prevention cover covering the inlet of the exhaust pipe, the bottom of the blockage prevention cover being provided with an air inlet hole; an anti-overflow piece arranged in the blockage prevention cover and located above the air inlet hole; and a flow passage between the anti-overflow piece and / or the anti-overflow piece and the blockage prevention cover.

[0006] By applying the technical solution of the present application, the flow passage can realize the exhaust of gas. During cooking, the soup below the cover rolls, the bottom of the blockage prevention cover can block the bubbles carrying the soup, realizing the first blocking and breaking of bubbles. When a large number of bubbles pass through the air inlet hole from bottom to top and enter the inside of the blockage prevention cover, the anti-overflow piece itself can physically block, realizing the second blocking and breaking of bubbles. When a small amount of overflow bubbles pass through the flow passage, the flow passage can also block the bubbles, realizing the third blocking and breaking of bubbles. Multiple blocking and breaking of bubbles can better prevent bubbles from entering the inside of the exhaust pipe, reducing the risk of bubble overflow from the exhaust pipe. Therefore, the technical solution of the present application effectively solves the problem of poor anti-overflow effect in the related art.

[0007] Further, the anti-overflow piece blocks at least part of the air inlet hole. In the above structure, the bubbles carrying the soup entering the blockage prevention cover from the air inlet hole are blocked by the anti-overflow piece, only gas can be exhausted, and a better physical bubble blocking effect is achieved.

[0008] Further, the flow passage comprises a through hole arranged at the bottom of the anti-overflow piece. In the above structure, the through hole forms a narrow space, which can extrude the bubbles, improve the blocking and breaking effect of bubbles, and make the anti-overflow piece have a better anti-overflow effect.

[0009] Further, the through hole has a smaller diameter than the air inlet hole. In the above structure, the bubbles carrying soup entering the anti-blocking cover from the air inlet hole are squeezed by the wall of the through hole when they are discharged outward, and the bubbles are broken by the wall of the through hole through friction, thereby achieving the bubble breaking effect.

[0010] Further, the through hole includes a first hole section and a second hole section above the first hole section, and the second hole section has a smaller diameter than the first hole section. In the above structure, a step surface is formed between the wall of the second hole section and the wall of the first hole section. The step surface can physically block the bubbles carrying soup entering the anti-blocking cover from the air inlet hole, and the diameter of the second hole section is further reduced relative to the diameter of the first hole section, and the flow area is also reduced, thereby effectively breaking the bubbles and further ensuring the bubble breaking effect.

[0011] Further, a bubble breaking structure is arranged in the flow channel. In the above structure, the bubble breaking structure can squeeze the bubbles when the bubbles flow through the flow channel, and the bubble breaking structure and the bubbles are in friction, thereby breaking the bubbles.

[0012] Further, a bubble breaking structure is arranged between the outer side of the overflow piece and the inner side of the anti-blocking cover and / or in the through hole. In the above structure, the bubbles carrying soup entering the anti-blocking cover from the air inlet hole are blocked when they pass through the bottom of the overflow piece and the bottom of the anti-blocking cover, and the bubble breaking structure can break the bubbles when the bubbles pass through the overflow piece and the anti-blocking cover, thereby achieving the bubble breaking effect.

[0013] Further, the bubble breaking structure is a spiral groove arranged along the wall of the through hole, or the bubble breaking structure includes a plurality of spaced grooves, and each groove is a horizontal annular groove arranged along the circumference of the wall of the through hole. In the above structure, the groove wall of the spiral groove or the horizontal annular groove can be in friction with the bubbles, so that the spiral groove or the horizontal annular groove can break the bubbles passing through the through hole.

[0014] Further, the flow channel includes a first flow gap between the bottom of the overflow piece and the bottom of the anti-blocking cover, and a second flow gap between the side of the overflow piece and the side of the anti-blocking cover. In the above structure, the first flow gap and the second flow gap are arranged to facilitate the discharge of gas from the first flow gap and the second flow gap into the exhaust pipe, and the second flow gap can also achieve the gap squeezing bubble breaking.

[0015] Further, the bubble breaking structure is a spiral groove arranged along the outer side surface of the anti-overflow member, or the bubble breaking structure comprises a plurality of spaced recesses, each of which is a horizontal annular groove arranged circumferentially along the outer side surface of the anti-overflow member. In the above structure, during cooking, the soup under the cover rolls and passes through the two barriers of the anti-blocking cover and the first overflow gap to break the bubbles, and the bubbles carrying the soup are extruded onto the outer side surface of the anti-overflow member. The bubbles carrying the soup rise along the outer side surface of the anti-overflow member, and the groove wall of the spiral groove or the horizontal annular groove can rub against the bubbles, so that the spiral groove or the horizontal annular groove can break the bubbles by resistance and extrusion.

[0016] Further, the overflow passage comprises the first overflow gap between the bottom of the anti-overflow member and the bottom of the anti-blocking cover and the spiral groove, the anti-blocking cover comprises a side portion and a bottom portion, the side portion of the anti-overflow member is in interference fit with the side portion of the anti-blocking cover, and the spiral groove is arranged on the outer side surface of the anti-overflow member and penetrates through the top surface and the bottom surface of the anti-overflow member. In the above structure, during cooking, the soup under the cover rolls and passes through the two barriers and extrusion of the anti-blocking cover and the first overflow gap to break the bubbles, and the bubbles carrying the soup are extruded onto the outer side surface of the anti-overflow member. The bubbles carrying the soup rise along the outer side surface of the anti-overflow member, and the bubbles pass through the groove wall of the spiral groove to be physically blocked, thereby increasing the resistance of the bubbles rising and improving the bubble breaking effect.

[0017] Further, the anti-overflow member is floatingly arranged in the anti-blocking cover. In the above structure, during cooking, the soup under the cover rolls, the bubbles carrying the soup enter the anti-overflow cover from the air inlet hole from bottom to top, and the bubbles carrying the soup push the anti-overflow member to move upward. Since the anti-overflow member is floatingly arranged, on the one hand, it can extrude the excessive soup in the anti-blocking cover through the air inlet hole, and on the other hand, it can generate resistance to extrude the bubbles, thereby improving the bubble breaking effect.

[0018] Further, the cover assembly further comprises an elastic member, which applies an elastic force to the anti-overflow member in the direction of the bottom of the anti-blocking cover. When the bubbles carrying the soup push the anti-overflow member to move upward and reach the limit of compression of the elastic member, the elastic member applies an elastic force to the anti-overflow member in the direction of the bottom of the anti-blocking cover, so that the anti-overflow member moves downward. The structure of the elastic member is simple and the cost is low. The arrangement of the elastic member improves the floating barrier bubble breaking effect and improves the effect of the bubbles carrying the soup overflowing.

[0019] Further, the elastic member is arranged between the anti-overflow member and the cover, or the elastic member is arranged between the anti-overflow member and the exhaust pipe. The above positions are easy to realize and convenient to assemble.

[0020] Further, the cover assembly further comprises a connecting structure, the connecting structure is arranged on the anti-overflow member, the connecting structure is arranged on the anti-blocking cover, and the elastic member is arranged between the bottom surface of the anti-blocking cover and the bottom end of the connecting structure. In the above structure, the anti-overflow member can be fixed on the anti-blocking cover through the connecting structure.

[0021] Further, the anti-overflow piece is made of light material, and the density of the light material is in the range of 1.2 g / cm 3 to 2.7 g / cm 3 . In the above structure, the anti-overflow piece is lighter and can be pushed during the process of blocking the soup-carrying bubbles by the anti-overflow piece, and can better play the role of physical barrier to break the bubbles.

[0022] Further, the cover assembly further comprises a connecting structure arranged on the anti-overflow piece, the anti-overflow piece is connected with the anti-clogging cover through the connecting structure, the bottom wall of the anti-clogging cover is provided with a connecting hole, the connecting structure comprises a column and a stop protrusion, the column is arranged between the anti-overflow piece and the stop protrusion, the column is arranged in the connecting hole, and the stop protrusion is located outside the connecting hole. In the above structure, the anti-overflow piece can be fixed on the anti-clogging cover through the connecting structure. The stop protrusion can limit the upward movement of the column, and thus the anti-overflow piece can be prevented from being separated from the anti-clogging cover.

[0023] Further, the anti-overflow piece is an anti-overflow cover or an anti-overflow plate. In the above structure, the anti-overflow cover or the anti-overflow plate is simple in structure and easy to process and form.

[0024] According to another aspect of the present application, a cooking utensil is provided, which comprises a container and a cover assembly arranged on the container, and the cover assembly is the above cover assembly. Since the cover assembly can solve the problem of poor anti-overflow effect in the related art, the cooking utensil comprising the cover assembly has the same effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application, and do not constitute improper limitations on the present application. In the drawings:

[0026] Figure 1 Fig. 1 shows a cross-sectional schematic view of an embodiment one of the cover assembly according to the present application;

[0027] Figure 2 Fig. 2 shows an exploded schematic view of the cover assembly of Fig. 1; Figure 1

[0028] Figure 3 Fig. 3 shows a perspective schematic view of the cover assembly of Fig. 1; Figure 1

[0029] Figure 4 Fig. 4 shows a three-dimensional structure schematic view of the cover assembly of Fig. 1; Figure 1

[0030] Figure 5 Fig. 5 shows a three-dimensional structure schematic view of the anti-clogging cover of the cover assembly of Fig. 1; Figure 1

[0031] ​​​​Figure 6 A cross-sectional view showing the spill guard of the cap assembly of Figure 1

[0032] Figure 7 A cross-sectional view showing the cap assembly of embodiment two according to the present invention;

[0033] Figure 8 A cross-sectional view showing the cap assembly of Figure 7

[0034] Figure 9 A cross-sectional view showing the cap assembly of Figure 7

[0035] Figure 10 A cross-sectional view showing the cap assembly of embodiment three according to the present invention; Figure 7

[0036] Figure 11 A cross-sectional view showing the cap assembly of embodiment four according to the present invention;

[0037] Figure 12 A cross-sectional view showing the cap assembly of Figure 11

[0038] Figure 13 A cross-sectional view showing the cap assembly of Figure 11

[0039] Figure 14 A cross-sectional view showing the cap assembly of embodiment five according to the present invention;

[0040] Figure 15 A cross-sectional view showing the cap assembly of Figure 14

[0041] Figure 16 A cross-sectional view showing the cap assembly of Figure 14

[0042] Figure 17 A cross-sectional view showing the cap assembly of embodiment six according to the present invention;

[0043] Figure 18 A cross-sectional view showing the cap assembly of Figure 17

[0044] Figure 19 A cross-sectional view showing the cap assembly of embodiment seven according to the present invention;

[0045] Figure 20 ​​​​​​​​​An exploded view of the cover assembly of the present application is shown in FIG. 1. Figure 19 An exploded view of the cover assembly of the present application is shown in FIG. 1.

[0046] Figure 21 A perspective view of the anti-overflow plate of the cover assembly of the present application is shown in FIG. 4. Figure 19 A perspective view of the anti-overflow plate of the cover assembly of the present application is shown in FIG. 4.

[0047] Wherein, the above-mentioned figures include the following reference signs:

[0048] 10, cover; 20, exhaust pipe; 21, inlet; 31, anti-blocking cover; 311, air inlet hole; 312, connecting hole; 313, through hole; 32, anti-overflow piece; 321, through hole; 3211, first hole section; 3212, second hole section; 33, helical groove; 34, elastic piece; 37, connecting structure; 371, column body; 372, stop protrusion; 38, groove; 41, first flow gap; 42, second flow gap; 51, pressure limiting valve; 52, nut; 53, gasket. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0050] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combinations thereof.

[0051] The relative arrangement of parts and steps, numerical expressions, and values set forth in the examples herein are not intended to limit the scope of the application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of illustration and description only and not to limit the scope of the application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail but are intended to be understood as a part of the specification when appropriate. In all examples shown and discussed herein, any specific values are to be interpreted as merely illustrative and not as a limitation of the examples. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further discussion with regard thereto is needed.

[0052] As shown in FIG. 1, the cover assembly of the first embodiment includes a cover 10, an exhaust pipe 20, a pressure-limiting valve 51, a clogging-preventing cover 31, an anti-overflow element 32, and a flow passage. The exhaust pipe 20 is arranged on the cover 10. The pressure-limiting valve 51 is arranged above the exhaust pipe 20. The clogging-preventing cover 31 is arranged at the inlet 21 of the exhaust pipe 20, and the clogging-preventing cover 31 is provided with an air inlet hole 311 at the bottom. The anti-overflow element 32 is arranged in the clogging-preventing cover 31 and above the air inlet hole 311, and the flow passage is arranged between the anti-overflow element 32 and the clogging-preventing cover 31. In the first embodiment, the anti-overflow element 32 is an anti-overflow cover. Figures 1 to 6 The flow passage can realize the discharge of gas. During cooking, the soup under the cover 10 rolls, and the bottom of the clogging-preventing cover 31 can block the bubbles carrying the soup, realizing the first blocking of the bubbles. When a large number of bubbles pass through the air inlet hole 311 from bottom to top and enter the inside of the clogging-preventing cover 31, the anti-overflow cover itself can block the bubbles, realizing the second blocking of the bubbles. At the same time, when a small amount of overflow bubbles pass through the flow passage, the flow passage can also block the bubbles, realizing the third blocking of the bubbles. The multiple blocking of the bubbles can better prevent the bubbles from entering the inside of the exhaust pipe, reducing the risk of bubble overflow from the exhaust pipe 20. Therefore, the technical solution of the first embodiment effectively solves the problem of poor anti-overflow effect in the related art. It should be noted that the soup contains gas, liquid, and a small amount of solid particles.

[0053] As shown in FIG. 1, in the first embodiment, the anti-overflow element 32 blocks at least part of the air inlet hole 311. In this way, the bubbles carrying the soup entering the clogging-preventing cover 31 from the air inlet hole 311 are physically blocked by the anti-overflow element 32, playing a role in blocking the bubbles.

[0054] Figure 6

[0055] ​​It should be noted that the air inlet hole 311 has multiple, and the overflow prevention piece 32 blocks at least part of the air inlet hole 311, which means that the overflow prevention piece can block all the air inlet holes 311, such as not setting holes on the overflow prevention piece; or the overflow prevention piece can block part of the air inlet holes 311, such as setting multiple through holes on the overflow prevention piece, the number of through holes is less than the number of air inlet holes 311, and some air inlet holes 311 are directly corresponding to the bottom wall of the overflow prevention piece; or the overflow prevention piece blocks part of each air inlet hole 311, such as setting multiple through holes on the overflow prevention piece, the through holes are corresponding to the air inlet holes, and the aperture of the through holes is smaller than the aperture of the air inlet holes, or the through holes are misaligned with the air inlet holes. The above cases will be described in detail below.

[0056] As shown in Figure 3 , Figure 4 and Figure 6 , in embodiment one, the overflow passage includes a through hole 321 arranged at the bottom of the overflow prevention piece 32. The through hole 321 forms a narrow space, which can extrude the bubbles carrying soup, improve the bubble blocking effect, and make the overflow prevention piece 32 have better anti-overflow effect. Of course, in the embodiment not shown in the figure, the bottom of the overflow cover can also not be provided with a hole, and the overflow passage is arranged at other positions, which will be introduced below. As shown in Figure 6 , in embodiment one, the aperture of the through hole 321 is smaller than the aperture of the air inlet hole 311. The bubbles carrying soup entering the anti-clogging cover 31 from the air inlet hole 311, due to the difference between the apertures, when the bubbles are discharged outward, the hole wall of the through hole 321 can extrude the bubbles, so that the bubbles rub against the hole wall of the through hole 321, break the bubbles, and achieve the bubble breaking effect.

[0057] According to the experimental data of three pressure tests by the inventor, when the aperture of the through hole 321 is <0.5mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is prone to be high. According to the experimental data of four anti-overflow effect tests by the inventor, when the aperture of the through hole 321 is >5mm, the aperture of the through hole 321 is too large, and the anti-overflow effect cannot be achieved. Therefore, the aperture of the through hole 321 in embodiment one is in the range of 0.5mm to 5mm. The through hole 321 in this size range can avoid high pressure and ensure the anti-overflow effect.

[0058] According to the experimental data of the inventor through three pressure tests, when the hole diameter of the air inlet hole 311 is <0.75 mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is prone to be high. According to the experimental data of the inventor through four anti-overflow effect tests, when the hole diameter of the air inlet hole 311 is >7.5 mm, the hole diameter of the air inlet hole 311 is too large, and the anti-clogging effect cannot be achieved. Therefore, the hole diameter of the air inlet hole 311 of the first embodiment is in the range of 0.75 mm to 7.5 mm. The air inlet hole 311 in this size range can not only avoid high pressure, but also ensure the anti-clogging effect. The hole diameter of the air inlet hole 311 is preferably 3 mm or 4 mm.

[0059] In the first embodiment, the anti-overflow cover includes a bottom wall and a side wall extending upward from the bottom wall, the bottom wall is annular or circular, and is arranged in parallel with the bottom wall of the anti-clogging cover, and the side wall is cylindrical. The parallel arrangement of the bottom wall of the anti-overflow cover and the bottom wall of the anti-clogging cover allows the bubbles carrying soup to spread uniformly around the bottom wall of the anti-overflow cover, effectively performing physical blocking. In an embodiment not shown in the figure, the anti-overflow cover can also be a structure of a part of a sphere.

[0060] In the first embodiment, the flow passage further includes a first flow gap 41 between the bottom of the anti-overflow piece 32 and the bottom of the anti-clogging cover 31, and a second flow gap 42 between the side of the anti-overflow piece 32 and the side of the anti-clogging cover 31. The gas entering the anti-clogging cover from the air inlet hole 311 of the anti-clogging cover can flow out through the through hole 321, the first flow gap 41 and the second flow gap 42. In the first embodiment, the side wall of the anti-overflow cover is further provided with a through hole 313, which is used to assist air intake. When the air inlet hole 311 is blocked by some food materials, air intake can be achieved at the through hole 313 to ensure that the cooking appliance can normally increase the pressure.

[0061] In the first embodiment, the anti-overflow piece 32 is fixedly arranged in the anti-clogging cover 31. The cover assembly further includes a connecting structure 37 arranged on the anti-overflow piece 32, and the anti-overflow piece 32 is connected with the anti-clogging cover 31 through the connecting structure 37. The anti-overflow piece 32 can be fixed on the anti-clogging cover 31 through the connecting structure 37. The bottom wall of the anti-clogging cover 31 is provided with a connecting hole 312, the connecting structure 37 includes a column body 371 and a stop protrusion 372, the column body 371 is arranged between the anti-overflow piece 32 and the stop protrusion 372, the column body 371 is arranged in the connecting hole 312, and the stop protrusion 372 is located outside the connecting hole 312. The stop protrusion 372 can limit the upward movement of the column body 371, thereby preventing the anti-overflow piece 32 from being separated from the anti-clogging cover 31. The above-mentioned connecting structure can be provided one, arranged at the center of the anti-overflow piece, or the connecting structure can be provided as multiple, and the connecting hole 312 is correspondingly provided with multiple.

[0062] As Figure 1 and Figure 2As shown in the embodiment one, the cover body 10 comprises a cover body, a nut 52 and a gasket 53. The gasket 53 is sleeved on the outer side of the exhaust pipe 20, the nut 52 is connected with the exhaust pipe 20, and the gasket 53 is arranged between the nut 52 and the cover body. By screwing the nut 52 to fix the exhaust pipe 20 on the cover body, the circumferential direction of the nut 52 is provided with a fixing claw, and the inner side wall of the anti-blocking cover 31 is clamped on the fixing claw.

[0063] It should be noted that the anti-overflow piece of the embodiment one can also be an anti-overflow plate.

[0064] As shown in the embodiment one, the cover body 10 comprises a cover body, a nut 52 and a gasket 53. The gasket 53 is sleeved on the outer side of the exhaust pipe 20, the nut 52 is connected with the exhaust pipe 20, and the gasket 53 is arranged between the nut 52 and the cover body. By screwing the nut 52 to fix the exhaust pipe 20 on the cover body, the circumferential direction of the nut 52 is provided with a fixing claw, and the inner side wall of the anti-blocking cover 31 is clamped on the fixing claw. Figures 7 to 10 As shown in the embodiment two provided by the cover body assembly of the present application, the difference from the embodiment one is the specific structure of the anti-overflow piece. In the embodiment two, the anti-overflow piece is an anti-overflow plate. The anti-overflow plate is also provided with a through hole, and the through hole 321 comprises a first hole section 3211 and a second hole section 3212 located above the first hole section 3211, and the hole diameter of the second hole section 3212 is smaller than the hole diameter of the first hole section 3211. In this way, the hole diameter of the second hole section 3212 is smaller than the hole diameter of the first hole section 3211, so that a step surface is formed between the hole wall of the second hole section 3212 and the hole wall of the first hole section 3211. The air bubbles carrying soup from the air inlet hole 311 into the anti-blocking cover 31 can be physically blocked by the step surface, and on the other hand, since the hole diameter of the second hole section 3212 is further reduced relative to the hole diameter of the first hole section 3211, the flow area is also reduced, which can effectively squeeze the air bubbles, thereby ensuring the breaking effect.

[0065] In the embodiment two, according to the experimental data of three pressure tests by the inventor, when the hole diameter of the second hole section 3212 is <0.5mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is prone to be high. According to the experimental data of four anti-overflow effect tests by the inventor, when the hole diameter of the second hole section 3212 is >5mm, the hole diameter of the second hole section 3212 is too large, and the anti-overflow effect cannot be well achieved. Therefore, the hole diameter of the second hole section 3212 is in the range of 0.5mm to 5mm. The second hole section 3212 in this size range can not only avoid high pressure, but also ensure the anti-overflow effect.

[0066] In the embodiment two, according to the experimental data of three pressure tests by the inventor, when the hole diameter of the first hole section 3211 is <0.75mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is prone to be high. According to the experimental data of four anti-overflow effect tests by the inventor, when the hole diameter of the first hole section 3211 is >7.5mm, the hole diameter of the second hole section 3212 is too large, and the anti-overflow effect cannot be well achieved. Therefore, the hole diameter of the first hole section 3211 is in the range of 0.75mm to 7.5mm. The first hole section 3211 in this size range can not only avoid high pressure, but also ensure the anti-overflow effect.

[0067] It should be noted that the anti-overflow piece of Example Two can also be an anti-overflow cover.

[0068] As shown in FIG. 3, the anti-overflow piece 32 is arranged in the over-flow passage 30. The anti-overflow piece 32 is arranged in the over-flow passage 30 to prevent the steam from flowing out of the over-flow passage 30. The anti-overflow piece 32 is arranged in the over-flow passage 30 to prevent the steam from flowing out of the over-flow passage 30 and to prevent the steam from flowing into the soup. Figures 11 to 13 As shown in FIG. 4, in Example Three of the cover assembly provided by the present application, the difference from Example One is that a bubble breaking structure is added, which is arranged in the over-flow passage. In Example Three, when the steam bubbles carrying soup flow through the over-flow passage, the bubble breaking structure can squeeze the steam bubbles, so that the bubble breaking structure rubs against the steam bubbles to break the steam bubbles.

[0069] As shown in FIG. 5, the bubble breaking structure is arranged between the outer side of the anti-overflow piece 32 and the inner side of the anti-clogging cover 31. The steam bubbles carrying soup entering the anti-clogging cover 31 from the air inlet hole 311 are blocked when passing through the bottom of the anti-overflow piece 32 and the bottom of the anti-clogging cover 31. When passing through the bubble breaking structure between the outer side of the anti-overflow piece 32 and the inner side of the anti-clogging cover 31, the outer side of the anti-overflow piece 32 and the inner side of the anti-clogging cover 31 can squeeze the steam bubbles, and the bubble breaking structure can break the steam bubbles to achieve the bubble breaking effect. The anti-overflow piece 32 in Example Three is an anti-overflow cover. As known by those skilled in the art, it is also feasible that the anti-overflow piece is an anti-overflow plate. Figure 13 As shown in FIG. 6, in Example Three, the over-flow passage includes a first over-flow gap 41 between the bottom of the anti-overflow piece 32 and the bottom of the anti-clogging cover 31, and a second over-flow gap 42 between the side of the anti-overflow piece 32 and the side of the anti-clogging cover 31. The first over-flow gap 41 and the second over-flow gap 42 are arranged to facilitate the gas to flow out of the first over-flow gap 41 and the second over-flow gap 42 into the exhaust pipe. The second over-flow gap is narrower, and when the steam bubbles carrying soup flow through the second over-flow gap 42, the narrower second over-flow gap 42 can effectively squeeze the steam bubbles to achieve the bubble breaking effect.

[0070] Figure 13 The first over-flow gap 41 is in the range of 1 mm to 7 mm. The size range of the first over-flow gap 41 facilitates the steam to flow smoothly between the anti-overflow piece 32 and the bottom wall of the anti-clogging cover 31. The first over-flow gap 41 is preferably 3 mm or 4 mm.

[0071] The first over-flow gap 41 is in the range of 1 mm to 7 mm. The size range of the first over-flow gap 41 facilitates the steam to flow smoothly between the anti-overflow piece 32 and the bottom wall of the anti-clogging cover 31. The first over-flow gap 41 is preferably 3 mm or 4 mm.

[0072] ​Based on experimental data from three pressure tests conducted by the inventors, the limiting pressure of the cooking appliance was 70 kPa, while the actual pressures were 83 kPa, 88 kPa, and 84 kPa. It can be seen that when the second flow gap 42 is less than 0.1 mm, the amount of steam entering the exhaust pipe 20 is small, easily leading to excessively high pressure. Furthermore, based on experimental data from four anti-overflow tests conducted by the inventors, soup overflow occurred twice. It can be seen that when the second flow gap 42 is greater than 6 mm, the second flow gap is too large and cannot effectively prevent overflow. Therefore, the second flow gap 42 is within the range of 0.1 mm to 6 mm. A second flow gap within this size range can avoid excessively high pressure while ensuring the anti-overflow effect. The second flow gap 42 is preferably 1 mm, 3 mm, or 4 mm.

[0073] like Figure 13 As shown, in Embodiment 3, the bubble-breaking structure is a spiral groove 33 arranged along the outer surface of the anti-overflow member 32. During cooking, the broth under the lid 10 rolls and is blocked by the anti-clogging cover 31 and the first flow gap 41, causing the bubbles carrying the broth to be squeezed onto the outer surface of the anti-overflow member 32. The bubbles carrying the broth rise along the outer surface of the anti-overflow member. During the rise of the bubbles, the groove wall of the spiral groove 33 provides physical obstruction, further increasing the resistance to the rise of the bubbles and achieving a better bubble-breaking effect.

[0074] Of course, in embodiments not shown in other figures, the flow channel includes a first flow gap and a spiral groove between the bottom of the anti-overflow component and the bottom of the anti-clogging cover. The spiral groove is disposed on the outer side of the anti-overflow component and extends through the top and bottom surfaces of the anti-overflow component. The anti-clogging cover includes a side and a bottom, and the side of the anti-overflow component and the side of the anti-clogging cover are pressurized together. During cooking, the broth below the lid 10 swirls, and the bubbles are broken by the anti-clogging cover and the first flow gap, squeezing the bubbles and broth onto the outer side of the anti-overflow component. The bubbles rise along the spiral groove. During the rise of the bubbles, the spiral groove wall provides physical obstruction, further increasing the resistance to the rise of the bubbles and achieving a better bubble-breaking effect.

[0075] like Figures 14 to 16 As shown, in Embodiment 4 of the lid assembly provided in this application, the difference from Embodiment 3 lies in the specific structure of the bubble-breaking structure. In Embodiment 4, the bubble-breaking structure includes multiple spaced grooves 38, each groove 38 being a horizontal annular groove arranged circumferentially along the outer side of the anti-overflow member 32. During cooking, the broth below the lid 10 rolls, passing through the anti-blocking cover 31 and the first flow gap to break the bubbles, squeezing the bubbles and broth onto the outer surface of the anti-overflow member. The bubbles rise from bottom to top along the horizontal annular groove. During the rising process, the physical barrier of the horizontal annular groove further increases the resistance to the rising bubbles, achieving a better bubble-breaking effect. In this embodiment, the anti-overflow member 32 is an anti-overflow cover.

[0076] likeFigure 17 and Figure 18 As shown, in Embodiment 5 of the lid assembly provided in this application, the difference from Embodiment 1 is that the anti-overflow element 32 is floatably disposed within the anti-clogging cover 31. Thus, during cooking, the broth below the lid 10 swirls, and bubbles carrying the broth rise from bottom to top, entering the anti-overflow element 32 through the air inlet 311. The bubbles, carrying the broth, push the anti-overflow element 32 upwards. Because the anti-overflow element 32 is floatably disposed, it can, on the one hand, squeeze out excess broth inside the anti-clogging cover 31 through the air inlet 311, and on the other hand, generate resistance to compress the bubbles, improving the bubble-breaking effect. In Embodiment 5, the anti-overflow element 32 is an anti-overflow cover.

[0077] like Figure 17 and Figure 18 As shown, in Embodiment 5, the cover assembly further includes an elastic element 34, which applies an elastic force to the anti-overflow element 32 in the direction of the bottom of the anti-clogging cover 31. When bubbles carrying soup push the anti-overflow element 32 upward, when it reaches the limit of compression of the elastic element 34, the elastic element 34 applies an elastic force to the anti-overflow element 32 in the direction of the bottom of the anti-clogging cover 31, causing the anti-overflow element 32 to move downward. The elastic element 34 has a simple structure and low cost. The elastic element 34 improves the floating effect of blocking broken bubbles and improves the effect of bubbles carrying soup overflowing. The elastic element 34 in Embodiment 5 is preferably a compression spring.

[0078] like Figure 17 and Figure 18 As shown, in embodiment five, the elastic element 34 is disposed between the overflow preventer 32 and the cover 10. Thus, both ends of the elastic element 34 abut against the overflow preventer 32 and the cover 10 respectively, resulting in structural stability. In this case, the elastic element is located above the overflow preventer. Of course, in other embodiments not shown in the figures, the elastic element is disposed between the overflow preventer and the exhaust pipe. Alternatively, the cover assembly also includes a connecting structure disposed on the overflow preventer. The connecting structure passes through the anti-blocking cover, and the elastic element is disposed between the bottom surface of the anti-blocking cover and the bottom end of the connecting structure. In this case, the elastic element is located below the overflow preventer.

[0079] In Example 5, the spill-proof component 32 is made of a lightweight material with a density of 1.2 g / cm³. 3 Up to 2.7 g / cm 3 Within a certain range. The anti-overflow component can be pushed during the process of blocking air bubbles, thus better achieving the effect of physically preventing bubble bursting. The aforementioned lightweight material can be silicone, plastic, or aluminum.

[0080] like Figures 19 to 21As shown, in the sixth embodiment of the cover assembly provided in the present application, the difference from the fifth embodiment is that the anti-overflow member is an anti-overflow plate. The anti-overflow plate is a flat plate without an opening. In this way, the non-hole flat plate can increase the blocking area relative to the hole flat plate, thereby ensuring the blocking and bubble breaking effect of the anti-overflow plate.

[0081] The above embodiments are only preferred embodiments of the present application, and some embodiments not shown in the drawings will be listed as follows:

[0082] The anti-overflow member is an anti-overflow cover or an anti-overflow plate, and no through hole is arranged on the bottom wall of the anti-overflow cover or the anti-overflow plate. At this time, the overflow passage includes a first overflow gap between the bottom of the anti-overflow cover or the anti-overflow plate and the bottom of the anti-clogging cover and a second overflow gap between the side of the anti-overflow cover or the anti-overflow plate and the side of the anti-clogging cover.

[0083] In addition, in addition to arranging the bubble breaking structure in the first overflow gap and the second overflow gap, the bubble breaking structure can also be arranged in the through hole, or the bubble breaking structure is arranged in the first overflow gap, the second overflow gap and the through hole.

[0084] The bubble breaking structure in the first overflow gap and the second overflow gap includes a spiral groove or a plurality of horizontal annular grooves (refer to the third and fourth embodiments). The bubble breaking structure in the through hole includes a spiral groove arranged along the hole wall of the through hole or a plurality of recesses arranged at intervals, and each recess is a horizontal annular groove arranged along the circumferential direction of the hole wall of the through hole.

[0085] The present application also provides a cooking appliance. The cooking appliance of the present embodiment includes a container and a cover assembly arranged on the container, and the cover assembly is the cover assembly described above. The cooking appliance of the present embodiment can solve the problem of poor anti-overflow effect in the related art. The cooking appliance is an electric pressure cooker. Of course, in the embodiments not shown in the drawings, the cooking appliance can also be an electric rice cooker, a low-pressure rice cooker, a soybean milk machine, a food processor, an electric stew pot, a frying machine, a multifunctional pot, etc.

[0086] In the description of the present application, it should be understood that the orientation words such as “front, back, up, down, left, right”, “transverse, vertical, perpendicular, horizontal” and “top, bottom” and the like indicate the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present application; the orientation words “inner, outer” refer to the inner and outer of the contour of each component itself.

[0087] For purposes of the description hereinafter, the orientations in the various drawings will be described as shown in the drawings. However, it will be understood that the device can assume different orientations, e.g. viewed from the bottom, based on the application. Accordingly, the illustrative terms such as "above", "below", "upper", "lower", and the like are used as a shorthand notations to convey the relative positions of an object or feature as shown in the figures. It will be further appreciated that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device described is turned over, then a depiction that was previously described as "above" other parts or steps would then be oriented "below" other parts or steps. Thus, the exemplary term "above" can encompass both an "above" and "below" position depending on the particular orientation being referred to. Similarly, the terms "above" and "below" can include vertical orientations of the device as well as horizontal orientations of the device. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0088] In addition, it should be pointed out that the use of the terms "first", "second" and the like does not limit the corresponding parts but is merely intended to distinguish between those parts, and unless otherwise stated, the terms do not have a special meaning and should not be interpreted as limiting the scope of protection of the present application.

[0089] The preferred embodiments of the present application have been described above with the intent to enable those skilled in the art to make and use it. Various modifications to these embodiments will occur to those skilled in the art and are intended to be encompassed by the present application. The particular embodiments described are chosen and described in order to best explain the principles of the present application and its best mode. It is the scope of the application that is defined by the appended claims and their equivalents.

Claims

1. A cap assembly, characterized by, The utility model relates to a kind of exhaust pipe cover, including: Cover (10); Exhaust pipe (20), is arranged on the cover (10); Pressure limiting valve (51), is arranged above the exhaust pipe (20); Anti-blocking cover (31), cover is arranged at the inlet (21) of the exhaust pipe (20), the anti-blocking cover (31) bottom is provided with air inlet hole (311); Anti-overflow piece (32), the anti-overflow piece (32) is arranged in the anti-blocking cover (31) and is located above the air inlet hole (311); Overflow passage, between the anti-overflow piece (32) and the anti-blocking cover (31); Wherein, the overflow passage includes the first overflow gap (41) between the bottom of the anti-overflow piece (32) and the bottom of the anti-blocking cover (31) and the second overflow gap (42) between the side of the anti-overflow piece (32) and the side of the anti-blocking cover (31);Or, The overflow passage includes spiral groove (33) and the first overflow gap (41) between the bottom of the anti-overflow piece (32) and the bottom of the anti-blocking cover (31), the anti-blocking cover (31) includes side and bottom, the side of the anti-overflow piece (32) and the side of the anti-blocking cover (31) are interference fit, the spiral groove (33) is arranged on the outer side of the anti-overflow piece (32) and penetrates the top surface and bottom surface of the anti-overflow piece (32).

2. The cover assembly of claim 1, wherein The anti-overflow piece (32) at least partially shields the air inlet hole (311).

3. The cover assembly of claim 1, wherein The overflow passage includes through hole (321) arranged in the bottom of the anti-overflow piece (32).

4. The cover assembly of claim 3, wherein The aperture of the through hole (321) is smaller than the aperture of the air inlet hole (311).

5. The cover assembly of claim 3, wherein The through hole (321) includes first hole section (3211) and second hole section (3212) located above the first hole section (3211), and the aperture of the second hole section (3212) is smaller than the aperture of the first hole section (3211).

6. The cover assembly of claim 1, wherein The overflow passage is provided with a bubble breaking structure.

7. The cover assembly of claim 3, wherein The outer side of the anti-overflow piece (32) and the inner side of the anti-blocking cover (31) and / or the through hole (321) are provided with a bubble breaking structure.

8. The cover assembly of claim 7, wherein, When the overflow passage includes the first overflow gap (41) and the second overflow gap (42), wherein the bubble breaking structure is a spiral groove (33) arranged along the hole wall of the through hole (321), or the bubble breaking structure includes a plurality of spaced grooves (38), each groove (38) is a horizontal annular groove arranged circumferentially along the hole wall of the through hole (321).

9. The cover assembly of claim 6 or 7, wherein, When the overflow passage includes the first overflow gap (41) and the second overflow gap (42), the bubble breaking structure is a spiral groove (33) arranged along the outer side of the anti-overflow piece (32), or the bubble breaking structure includes a plurality of spaced grooves (38), each groove (38) is a horizontal annular groove arranged circumferentially along the outer side of the anti-overflow piece (32).

10. The cover assembly of claim 1, wherein The anti-overflow piece (32) is arranged in the anti-blocking cover (31) and can float.

11. The cover assembly of claim 10, wherein, The cover assembly further comprises an elastic member (34) which applies an elastic force to the anti-overflow member (32) in the direction of the bottom of the anti-clogging cover (31).

12. The cover assembly of claim 11, wherein, The elastic member (34) is arranged between the anti-overflow member (32) and the cover (10), or the elastic member (34) is arranged between the anti-overflow member (32) and the exhaust pipe (20).

13. The cover assembly according to claim 11, characterized in that, The cover assembly further comprises a connecting structure (37) arranged on the anti-overflow member (32), the connecting structure (37) is arranged on the anti-clogging cover (31), and the elastic member (34) is arranged between the bottom surface of the anti-clogging cover (31) and the bottom end of the connecting structure (37).

14. The cover assembly of claim 10, wherein, Said spilling-preventing member (32) is made of a light material having a density in the range of 1.2 g / cm 3 to 2.7 g / cm 3 .

15. The cover assembly of claim 1, wherein, The cover assembly further comprises a connecting structure (37) arranged on the anti-overflow member (32), the anti-overflow member (32) is connected with the anti-clogging cover (31) through the connecting structure (37), the bottom wall of the anti-clogging cover (31) is provided with a connecting hole (312), the connecting structure (37) comprises a column body (371) and a stop protrusion (372), the column body (371) is arranged between the anti-overflow member (32) and the stop protrusion (372), the column body (371) is arranged in the connecting hole (312), and the stop protrusion (372) is located outside the connecting hole (312).

16. The cover assembly of claim 1, wherein, The anti-overflow member (32) is an anti-overflow cover or an anti-overflow plate.

17. A cooking appliance comprising a vessel and a lid assembly having a lid arranged over the vessel, characterised in that, The cover assembly is the cover assembly according to any one of claims 1 to 16.

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