CN113693438A - Lid assembly and have its cooking utensil - Google Patents

Abstract

The invention provides a cover body assembly and a cooking utensil with the same, wherein the cover body assembly comprises: a cover body; the exhaust pipe is arranged on the cover body in a penetrating way; the pressure limiting valve is arranged above the exhaust pipe; the anti-blocking cover is covered at the inlet of the exhaust pipe, and the bottom of the anti-blocking cover is provided with an air inlet hole; the anti-overflow piece is arranged in the anti-blocking cover and is positioned above the air inlet; and the overflow passage is positioned on the overflow preventing piece and/or between the overflow preventing piece and the anti-blocking cover. The technical scheme of this application has solved the relatively poor problem of anti-overflow effect among the correlation technique effectively.

Description

Lid assembly and have its cooking utensil

Technical Field

The invention relates to the technical field of small household appliances, in particular to a cover body assembly and a cooking appliance with the same.

Background

In the related art, the cooking utensil comprises a pot body and a pot cover, a pressure limiting valve is arranged on the pot cover, the pressure limiting valve is sleeved on an exhaust pipe, and an anti-blocking cover or an anti-blocking nut is independently arranged at an inlet of the exhaust pipe, so that soup in the pot can be prevented from overflowing.

However, when a large amount of water exists in the cooking process, the anti-blocking cover or the anti-blocking nut cannot effectively prevent the soup from overflowing, so that the anti-overflow effect is poor.

Disclosure of Invention

The main objective of the present invention is to provide a cover assembly and a cooking utensil having the same, so as to solve the problem of poor anti-overflow effect in the related art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a cover assembly including: a cover body; the exhaust pipe is arranged on the cover body in a penetrating way; the pressure limiting valve is arranged above the exhaust pipe; the anti-blocking cover is covered at the inlet of the exhaust pipe, and the bottom of the anti-blocking cover is provided with an air inlet hole; the anti-overflow piece is arranged in the anti-blocking cover and is positioned above the air inlet; and the overflow passage is positioned on the overflow preventing piece and/or between the overflow preventing piece and the anti-blocking cover.

By applying the technical scheme of the invention, the overflowing channel can realize the discharge of gas. When culinary art, the hot water juice of lid below rolls, and the bottom of preventing stifled cover can block the bubble of smuggleing hot water juice secretly, realizes the broken bubble of first separation, and supreme through the inlet port entering when preventing stifled cover inside from following more as the bubble, anti-overflow piece itself can carry out the physics separation, realizes the broken bubble of second separation. When a small amount of overflowing bubbles pass through the overflowing channel, the overflowing channel can also block the bubbles, so that the third blocking and bubble breaking are realized. Broken bubble of many times separation can prevent better that the bubble from entering into the inside of blast pipe, has reduced the risk that the bubble spills over from the blast pipe. Therefore, the technical scheme of this application has solved the relatively poor problem of anti-overflow effect among the correlation technique effectively.

Further, the spill guard shields at least a portion of the air inlet holes. In the structure, the bubbles which are filled with the soup and enter the anti-blocking cover from the air inlet holes can be blocked by the anti-overflow piece, only the air can be discharged, and the better physical bubble blocking effect is achieved.

Further, the overflow channel includes a through hole provided at a bottom of the overflow prevention member. In the structure, the through holes form narrow spaces, bubbles can be extruded, the separation and bubble breaking effects are improved, and the anti-overflow piece has a better anti-overflow effect.

Further, the aperture of the through hole is smaller than that of the air inlet hole. In the structure, the bubbles which are filled with the soup and enter the anti-blocking cover from the air inlet holes have difference values between the pore diameters, so that when the bubbles are discharged outwards, the pore walls of the through holes can extrude the bubbles, the bubbles and the pore walls of the through holes generate friction, the bubbles are broken, and the bubble breaking effect is realized.

Further, the through hole comprises a first hole section and a second hole section positioned above the first hole section, and the aperture of the second hole section is smaller than that of the first hole section. In the structure, a step surface can be formed between the hole wall of the second hole section and the hole wall of the first hole section, the air enters the bubble which is contained with the soup in the anti-blocking cover from the air inlet, the step surface can physically block the bubble, and on the other hand, the aperture of the second hole section is further reduced relative to the aperture of the first hole section, so that the overflowing area is also reduced, the bubble can be effectively broken, and the bubble breaking effect is further ensured.

Furthermore, a bubble breaking structure is arranged in the overflowing channel. In the structure, when the bubble flow passes through the flow channel, the bubble breaking structure can extrude the bubbles, so that the bubble breaking structure and the bubbles generate friction to break the bubbles.

Furthermore, a foam breaking structure is arranged between the outer side surface of the anti-overflow piece and the inner side surface of the anti-blocking cover and/or in the through hole. In the foretell structure, get into from the inlet port to the bubble of smuggleing secretly hot water juice in preventing stifled cover, the bubble realizes stopping when the bottom of anti-overflow piece and the bottom of preventing stifled cover, when the lateral surface of anti-overflow piece again and prevent between the medial surface of preventing stifled cover or the perforating hole, broken bubble structure can break the bubble, realizes broken bubble effect.

Further, the bubble breaking structure is a spiral groove arranged along the hole wall of the through hole, or the bubble breaking structure comprises a plurality of grooves arranged at intervals, and each groove is a horizontal annular groove arranged along the circumferential direction of the hole wall of the through hole. In the above structure, the wall of the spiral groove or the horizontal annular groove can generate friction with the bubbles, so that the spiral groove or the horizontal annular groove can crush the bubbles passing through the through hole.

Further, the overflow passage includes a first overflow gap between the bottom of the spill prevention member and the bottom of the anti-blocking cover and a second overflow gap between the side of the spill prevention member and the side of the anti-blocking cover. In the structure, the first overflowing gap and the second overflowing gap are arranged in a manner that gas is conveniently discharged into the exhaust pipe from the first overflowing gap and the second overflowing gap, and the second overflowing gap can also realize gap extrusion and bubble breaking.

Further, the bubble breaking structure is a spiral groove arranged along the outer side surface of the anti-overflow piece, or the bubble breaking structure comprises a plurality of grooves arranged at intervals, and each groove is a horizontal annular groove arranged along the circumferential direction of the outer side surface of the anti-overflow piece. In foretell structure, during the culinary art, the hot water juice of lid below rolls, and through preventing stifled cover and the broken bubble of two separation in first clearance that overflows, can extrude the lateral surface of anti-overflow piece with smuggleing hot water juice secretly on. The bubble smugglies hot water juice secretly and rises along the lateral surface of anti-overflow spare, and the bubble rises the in-process, and the cell wall in helicla flute or horizontal annular groove can produce the friction with the bubble for helicla flute or horizontal annular groove can realize broken bubble purpose through resistance and extrusion.

Further, overflow the passageway and include overflow-preventing piece's bottom and prevent first clearance and the helicla flute of overflowing between the bottom of stifled cover, prevent stifled cover and include lateral part and bottom, interference fit between overflow-preventing piece's lateral part and the lateral part of preventing stifled cover, the helicla flute sets up on overflow-preventing piece's the lateral surface and link up overflow-preventing piece's top surface and bottom surface. In foretell structure, during the culinary art, the hot water juice of lid below rolls, and through preventing stifled cover and first overflowing two separation in clearance and the broken bubble of extrusion, will smuggle the bubble of hot water juice secretly and extrude on the lateral surface of anti-overflow piece. The bubble smugglies hot water juice secretly and rises along the lateral surface of anti-overflow spare, and the bubble rises the in-process, carries out the physics separation through the cell wall of helicla flute, increases the resistance that the bubble rises once more, and broken bubble effect is better.

Further, the spill prevention member is floatably disposed in the anti-blocking cover. In foretell structure, during the culinary art, the hot water juice of lid below rolls, smugglies hot water juice secretly bubble from the inlet port entering to the anti-overflow cover from bottom to top in, and the bubble smugglies hot water juice secretly and promotes anti-overflow piece upward movement, because anti-overflow piece floats and sets up, can extrude through the inlet port with preventing that the inside too much hot water juice of cover is passed through on the one hand, and on the other hand can produce the resistance, extrudees the bubble, improves broken bubble effect.

Further, the cover body assembly also comprises an elastic piece, and the elastic piece applies elastic force towards the bottom of the anti-blocking cover to the anti-overflow piece. When the boiling water is entrained by the bubbles to push the anti-overflow piece to move upwards and the boiling water moves to the limit of the compression of the elastic piece, the elastic piece applies elastic force towards the bottom direction of the anti-blocking cover to the anti-overflow piece, so that the anti-overflow piece moves downwards. The elastic part has simple structure and lower cost. The elastic piece improves the effect of floating, obstructing and breaking the bubbles and improves the effect of overflowing the bubbles carrying the soup.

Further, an elastic member is provided between the spill prevention member and the cap body, or an elastic member is provided between the spill prevention member and the exhaust pipe. The above positions are easy to realize and convenient to assemble.

Further, lid subassembly still includes connection structure, and connection structure sets up on anti-overflow piece, and connection structure wears to establish and prevents stifled covering, and the elastic component setting is preventing between the bottom surface of stifled covering and connection structure's bottom. In the structure, the anti-overflow piece can be fixed on the anti-blocking cover through the connecting structure.

Furthermore, the overflow preventing part is made of light materials, and the density of the light materials is 1.2g/cm³To 2.7g/cm³Within the range of (1). In foretell structure, the anti-overflow spare is lighter, blocks the in-process that smugglies the bubble of smuggleing the hot water juice secretly at the anti-overflow spare and can be promoted, can play the broken effect of bubble of physics separation better.

Further, lid subassembly is still including setting up the connection structure on anti-overflow spare, and anti-overflow spare passes through connection structure and prevents stifled cover connection, prevents being provided with the connecting hole on the diapire of stifled cover, and connection structure includes that cylinder and backstop are protruding, and the cylinder setting is between anti-overflow spare and backstop are protruding, and the cylinder is worn to establish in the connecting hole, and the backstop is protruding to be located the outside of connecting hole. In the structure, the anti-overflow piece can be fixed on the anti-blocking cover through the connecting structure. The stop protrusion can limit the upward movement of the column body, and further can prevent the anti-overflow piece from separating from the anti-blocking cover.

Further, the spill prevention member is a spill prevention cover or a spill prevention plate. In the structure, the anti-overflow cover or the anti-overflow plate is simple in structure and easy to machine and form.

According to another aspect of the present invention, there is provided a cooking appliance comprising a container and a cover assembly for covering the container, the cover assembly being as described above. Since the cover assembly can solve the problem of poor anti-overflow effect in the related art, the cooking appliance including the cover assembly has the same effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic cross-sectional view of a first embodiment of a cover assembly according to the present invention;

FIG. 2 shows an exploded view of the cover assembly of FIG. 1;

FIG. 3 shows a perspective schematic view of the cover assembly of FIG. 1;

FIG. 4 illustrates a perspective view of the cover assembly of FIG. 1;

FIG. 5 is a schematic perspective view of the anti-clog cover of the cover assembly of FIG. 1;

FIG. 6 is a schematic cross-sectional view of the overfill prevention cover of the cover assembly of FIG. 1 installed within the anti-clog cover;

FIG. 7 shows a schematic cross-sectional view of a second embodiment of a cover assembly according to the present invention;

FIG. 8 shows an exploded view of the cover assembly of FIG. 7;

FIG. 9 is a perspective schematic view of the spill plate and connecting structure of the cover assembly of FIG. 7;

FIG. 10 is a schematic cross-sectional view of the spill plate of the cap assembly of FIG. 7 installed within the anti-clogging cap;

FIG. 11 shows a schematic cross-sectional view of a third embodiment of a cover assembly according to the present invention;

FIG. 12 is a schematic front view illustrating another position of the spill cap of the cap assembly of FIG. 11;

FIG. 13 is a schematic cross-sectional view of the overfill prevention cover of the cover assembly of FIG. 11 installed within the anti-clog cover;

FIG. 14 shows a cross-sectional schematic view of embodiment four of a cover assembly according to the present invention;

FIG. 15 illustrates a front schematic view of the spill guard of the cap assembly of FIG. 14;

FIG. 16 is a schematic cross-sectional view of the overfill prevention cover of the cover assembly of FIG. 14 installed within the anti-clog cover;

FIG. 17 shows a schematic cross-sectional view of embodiment five of a cover assembly according to the present invention;

FIG. 18 shows an exploded view of the cover assembly of FIG. 17;

FIG. 19 shows a schematic cross-sectional view of embodiment six of a cover assembly according to the present invention;

FIG. 20 shows an exploded view of the cover assembly of FIG. 19; and

fig. 21 shows a perspective view of the spill plate of the cover assembly of fig. 19.

Wherein the figures include the following reference numerals:

10. a cover body; 20. an exhaust pipe; 21. an inlet; 31. an anti-blocking cover; 311. an air inlet; 312. connecting holes; 313. a through hole; 32. an overflow prevention member; 321. a through hole; 3211. a first bore section; 3212. a second bore section; 33. a helical groove; 34. an elastic member; 37. a connecting structure; 371. a cylinder; 372. a stop projection; 38. a groove; 41. a first over-current gap; 42. a second over-current gap; 51. a pressure limiting valve; 52. a nut; 53. and (7) a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 6, the cover assembly of the first embodiment includes: the cover body 10, the exhaust pipe 20, the pressure limiting valve 51, the anti-blocking cover 31, the anti-overflow piece 32 and the overflow channel. The exhaust pipe 20 is inserted into the lid 10. The pressure limiting valve 51 is disposed above the exhaust pipe 20. The anti-blocking cover 31 covers the inlet 21 of the exhaust pipe 20, and the bottom of the anti-blocking cover 31 is provided with an air inlet 311. The spill prevention member 32 is arranged in the anti-blocking cover 31 and above the air inlet hole 311, and the overflow passage is located on the spill prevention member 32 and between the spill prevention member 32 and the anti-blocking cover 31. In the first embodiment, the spill guard 32 is a spill guard.

By applying the technical scheme of the first embodiment, the overflowing channel can realize the discharge of gas. When culinary art, the hot water juice of lid 10 below rolls, prevents that the bottom of stifled cover 31 can block the bubble of smuggleing hot water juice secretly, realizes the broken bubble of separation for the first time, and when the bubble was more from supreme entering through inlet port 311 down and prevent stifled cover 31 inside, the anti-overflow cover itself can block the bubble, realizes the broken bubble of separation for the second time. Meanwhile, when a small amount of overflowing bubbles pass through the overflowing channel, the overflowing channel can also block the bubbles, and the third blocking and bubble breaking are realized. Broken bubble of many times separation can prevent better that the bubble from getting into to the blast pipe inside, has reduced the risk that the bubble spills over from blast pipe 20. Therefore, the technical scheme of the first embodiment effectively solves the problem of poor anti-overflow effect in the related art. The soup contains gas, liquid and a small amount of solid particles.

As shown in fig. 6, in the first embodiment, the spill guard 32 covers at least a part of the air inlet holes 311. In this way, the bubbles entering the anti-blocking cover 31 from the air inlet holes 311 and carrying the soup are physically blocked by the anti-overflow member 32, thereby blocking the bubbles.

It should be noted that there are a plurality of air inlet holes 311, and the blocking of at least part of the air inlet holes 311 by the spill prevention member 32 means: the spill prevention member can shield all the air inlet holes 311, for example, no hole is provided on the spill prevention member; alternatively, the spill prevention member may cover a part of the plurality of air inlet holes 311, for example, a plurality of through holes are provided on the spill prevention member, the number of the through holes is less than that of the air inlet holes 311, and some of the air inlet holes 311 directly correspond to the bottom wall of the spill prevention member; alternatively, the spill prevention member covers a portion of each air inlet 311, for example, the spill prevention member is provided with a plurality of through holes, the through holes are arranged corresponding to the air inlet, and the aperture of the through holes is smaller than that of the air inlet, or the through holes and the air inlet are arranged in a staggered manner. These cases will be described in detail below.

As shown in fig. 3, 4 and 6, in the first embodiment, the overflow passage includes a through hole 321 provided at the bottom of the overflow prevention member 32. The through hole 321 forms a narrow space, and can extrude bubbles which entrain soup, so that the separation bubble breaking effect is improved, and the anti-overflow piece 32 has a better anti-overflow effect. Of course, in embodiments not shown in the figures, the bottom of the spill guard may also be provided without holes, in which case the overflow channel is provided elsewhere, as will be described below. As shown in FIG. 6, in the first embodiment, the aperture of the through hole 321 is smaller than that of the air inlet hole 311. The bubbles which enter the anti-blocking cover 31 from the air inlet holes 311 and carry soup are enabled to be extruded by the hole walls of the through holes 321 when the bubbles are discharged outwards due to the difference between the hole diameters, so that the bubbles and the hole walls of the through holes 321 generate friction, the bubbles are extruded and broken, and the bubble breaking effect is achieved.

According to the experimental data of the inventor after three pressure tests, when the aperture of the through hole 321 is less than 0.5mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is likely to be high. According to the experimental data of the inventor after four times of anti-overflow effect tests, it can be known that when the aperture of the through hole 321 is larger than 5mm, the anti-overflow effect cannot be achieved well. Therefore, the through-hole 321 of the first embodiment has a diameter in the range of 0.5mm to 5 mm. The through hole 321 within this size range can ensure the anti-overflow effect while avoiding a high pressure.

According to the experimental data of the inventor after three pressure tests, when the aperture of the air inlet 311 is smaller than 0.75mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is easily high. According to the experimental data of the inventor after four times of anti-overflow effect tests, when the aperture of the air inlet 311 is larger than 7.5mm, the aperture of the air inlet 311 is larger, and the anti-blocking effect cannot be well achieved. Therefore, the aperture of the air inlet holes 311 of the first embodiment is in the range of 0.75mm to 7.5 mm. The air inlet 311 in the size range can not only avoid the pressure from being higher, but also ensure the anti-blocking effect. The aperture of the air intake holes 311 is preferably 3mm or 4 mm.

In the first embodiment, the anti-overflow cover comprises a bottom wall and a side wall extending upwards from the bottom wall, the bottom wall is annular or circular and is arranged in parallel with the bottom wall of the anti-overflow cover, and the side wall is cylindrical. The diapire of anti-overflow cover of parallel arrangement and the diapire that prevents stifled cover make the bubble of smuggleing secretly the hot water juice can spread around to the diapire of anti-overflow cover uniformly, carry out the physics separation effectively. In an embodiment not shown in the figures, the spill guard may also be a partial structure of a sphere.

In the first embodiment, the overflow channel further includes a first overflow gap 41 between the bottom of the spill prevention member 32 and the bottom of the anti-blocking cover 31, and a second overflow gap 42 between the side of the spill prevention member 32 and the side of the anti-blocking cover 31. The gas entering the anti-blocking cover from the gas inlet holes 311 of the anti-blocking cover 31 can flow out through the through holes 321, the first overflowing gap 41 and the second overflowing gap 42. In the first embodiment, the side wall of the anti-overflow cover is further provided with a through hole 313, the through hole 313 is used for assisting air intake, and when the air intake hole 311 is blocked by some food materials, air intake can be realized at the through hole 313 to ensure that the cooking appliance can be normally pressurized.

In the first embodiment, the spill prevention member 32 is fixedly disposed in the anti-blocking cover 31. The cover assembly further comprises a connecting structure 37 arranged on the spill prevention member 32, and the spill prevention member 32 is connected with the anti-blocking cover 31 through the connecting structure 37. The spill guard 32 can be fixed to the anti-blocking cap 31 by means of a connecting structure 37. The bottom wall of the anti-blocking cover 31 is provided with a connecting hole 312, the connecting structure 37 comprises a cylinder 371 and a stopping protrusion 372, the cylinder 371 is arranged between the anti-overflow piece 32 and the stopping protrusion 372, the cylinder 371 is arranged in the connecting hole 312 in a penetrating manner, and the stopping protrusion 372 is positioned on the outer side of the connecting hole 312. The stopper protrusion 372 can limit the upward movement of the cylinder 371, and thus can prevent the overflow preventing member 32 from being separated from the anti-blocking cover 31. The connecting structure may be provided in one piece and disposed at the center of the spill prevention member, or the connecting structure may be provided in plural pieces, and the connecting holes 312 are correspondingly provided in plural pieces.

As shown in fig. 1 and 2, in the first embodiment, the cover 10 includes a cover body, a nut 52, and a spacer 53. The gasket 53 is fitted around the outside of the exhaust pipe 20, the nut 52 is connected to the exhaust pipe 20, and the gasket 53 is provided between the nut 52 and the cover body. By screwing the nut 52 to fix the exhaust pipe 20 to the cover body, the fixing claws are provided in the circumferential direction of the nut 52, and the inner side wall of the anti-blocking cover 31 is caught on the fixing claws.

It should be noted that: the spill guard of the first embodiment may also be a spill plate.

As shown in fig. 7 to 10, in the second embodiment provided in the cap assembly of the present application, the difference from the first embodiment is in the specific structure of the spill prevention member, and in the second embodiment, the spill prevention member is a spill plate. The spill plate is also provided with a through hole, the through hole 321 includes a first hole segment 3211 and a second hole segment 3212 located above the first hole segment 3211, and the aperture of the second hole segment 3212 is smaller than that of the first hole segment 3211. Like this, the aperture of second hole section 3212 is less than the aperture of first hole section 3211 for form the step face between the pore wall of second hole section 3212 and the pore wall of first hole section 3211, enter into the bubble of the soup of smuggleing secretly in preventing stifled cover 31 from the inlet port 311, the step face can carry out physical separation to the bubble on the one hand, on the other hand because the aperture of second hole section 3212 further reduces for the aperture of first hole section 3211, the area of overflowing has also reduced, can break the bubble effectively, and then guaranteed broken bubble effect.

In the second embodiment, according to the experimental data of the inventor after three pressure tests, when the pore diameter of the second pore section 3212 is less than 0.5mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is likely to be higher. According to the experimental data of the inventor after four times of anti-overflow effect tests, when the aperture of the second hole segment 3212 is larger than 5mm, the aperture of the second hole segment 3212 is larger, and the anti-overflow effect cannot be well achieved. Thus, the second bore segment 3212 has a bore diameter in the range of 0.5mm to 5 mm. The second hole segment 3212 within this size range not only can avoid a pressure increase, but also can ensure an anti-overflow effect.

In the second embodiment, according to the experimental data of the inventor after three pressure tests, when the pore diameter of the first pore section 3211 is less than 0.75mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is likely to be higher. According to the experimental data of the inventor after four times of anti-overflow effect tests, when the aperture of the first hole section 3211 is larger than 7.5mm, the aperture of the second hole section 3212 is larger, and the anti-overflow effect cannot be well achieved. Thus, the first bore segment 3211 has a bore diameter in the range of 0.75mm to 7.5 mm. The first hole segment 3211 within this size range not only can avoid a pressure rise, but also can ensure an anti-overflow effect.

It should be noted that: the spill prevention member of the second embodiment may also be a spill prevention cover.

As shown in fig. 11 to 13, in the third embodiment provided by the cover assembly of the present application, a bubble breaking structure is added, and the bubble breaking structure is disposed in the flow passage. In the third embodiment, when the bubble flow carrying the soup passes through the flow channel, the bubble breaking structure can squeeze the bubbles, so that the bubble breaking structure generates friction with the bubbles to break the bubbles.

As shown in fig. 13, a bubble breaking structure is provided between the outer side surface of the spill prevention member 32 and the inner side surface of the block-resistant cover 31. Enter into the bubble of smuggleing secretly hot water juice in preventing stifled cover 31 from inlet hole 311, the bubble realizes stopping when the bottom of anti-overflow piece 32 and the bottom of preventing stifled cover 31, when the lateral surface of anti-overflow piece 32 and the medial surface of preventing stifled cover 31 are passed through again, the lateral surface of anti-overflow piece 32 and the side homoenergetic of preventing stifled cover 31 extrude the bubble, broken bubble structure can be broken the bubble, realizes broken bubble effect. The spill guard 32 in the third embodiment is a spill guard. It is also possible, as is known to the person skilled in the art, for the spill guard to be a spill plate.

As shown in fig. 13, in the third embodiment, the overflow passage includes a first overflow gap 41 between the bottom of the overflow prevention member 32 and the bottom of the anti-blocking cover 31, and a second overflow gap 42 between the side of the overflow prevention member 32 and the side of the anti-blocking cover 31. The arrangement of the first and second flow gaps 41, 42 facilitates the discharge of gas from the first and second flow gaps 41, 42 into the exhaust pipe. The second overflowing gap is narrow, and when the bubbles carry soup to flow from the second overflowing gap 42, the narrow second overflowing gap 42 can effectively extrude the bubbles to achieve a bubble breaking effect.

The first flow gap 41 is in the range of 1mm to 7 mm. The above-mentioned range of the size of the first flow-passing gap 41 facilitates the steam to smoothly flow through between the spill prevention member 32 and the bottom wall of the block prevention cover 31. The first flow gap 41 is preferably 3mm or 4 mm.

According to the experimental data of the inventor after three times of pressure tests, the limiting pressure of the cooking utensil is 70kPa, and the actual pressure is 83kPa, 88kPa and 84 kPa. It can be seen that when the second flow passing gap 42 is smaller than 0.1mm, the amount of steam entering the exhaust pipe 20 is small, and the pressure is likely to be higher. And according to the experimental data of the inventor after four anti-overflow effect tests, the phenomenon of overflow of the cooking liquor appears twice. It can be known that when the second overflowing gap 42 is larger than 6mm, the second overflowing gap is larger, and the overflowing preventing effect cannot be well achieved. Thus, the second flow gap 42 is in the range of 0.1mm to 6 mm. The second overflow gap in the size range can avoid high pressure and ensure the anti-overflow effect. The second flow gap 42 is preferably 1mm or 3mm or 4 mm.

As shown in fig. 13, in the third embodiment, the bubble breaking structure is a spiral groove 33 arranged along the outer side surface of the spill prevention member 32. During cooking, soup below the cover body 10 rolls, and bubbles are broken through the blocking-proof cover 31 and the first overflowing gap 41, so that the bubbles carrying the soup are extruded onto the outer side surface of the overflowing preventing piece 32. The bubble smugglies hot water juice secretly and rises along the lateral surface of anti-overflow spare, and the bubble rises the in-process, carries out the physics separation through the cell wall of helicla flute 33, increases the resistance that the bubble rises once more, and it is better to realize broken bubble effect.

Of course, in other embodiments not shown in the figures, the overflow channel comprises a first overflow gap between the bottom of the spill prevention member and the bottom of the anti-blocking cover and a spiral groove provided on the outer side surface of the spill prevention member and passing through the top and bottom surfaces of the spill prevention member. Prevent stifled cover including lateral part and bottom, interference fit between the lateral part of anti-overflow spare and the lateral part of preventing stifled cover. During cooking, the soup below the cover body 10 rolls, and the soup is squeezed onto the outer side surface of the anti-overflow piece through the anti-blocking cover and the first overflow gap for blocking and breaking the bubbles. The bubble entrainment rises along the spiral groove. In the rising process of the bubbles, the physical separation is carried out through the groove wall of the spiral groove, the rising resistance of the bubbles is increased again, and the bubble breaking effect is better.

As shown in fig. 14 to 16, in the fourth embodiment provided in the cover assembly of the present application, the difference from the third embodiment is the specific structure of the bubble breaking structure. In the fourth embodiment, the bubble breaking structure includes a plurality of grooves 38 arranged at intervals, and each groove 38 is a horizontal annular groove arranged along the circumferential direction of the outer side surface of the spill guard 32. During cooking, the soup below the cover body 10 rolls, and the soup is squeezed onto the outer side surface of the anti-overflow piece through the anti-blocking cover 31 and the first overflow gap at two positions for blocking and breaking the bubbles. The bubbles rise along the horizontal annular groove from bottom to top. In the bubble rising process, the groove wall of the horizontal annular groove is used for physical separation, the rising resistance of the bubbles is increased again, and the bubble breaking effect is better. The spill guard 32 of this embodiment is a spill guard.

As shown in fig. 17 and 18, in the fifth embodiment provided in the cap assembly of the present application, the difference from the first embodiment is that the spill prevention member 32 is provided floatingly in the anti-clogging cover 31. Like this, during the culinary art, the hot water juice of lid 10 below rolls, smugglies hot water juice's bubble from bottom to top secretly, enters into to anti-overflow piece 32 in from inlet port 311, and the bubble smugglies hot water juice secretly and promotes anti-overflow piece 32 upward movement, because anti-overflow piece 32 floats and sets up, can will prevent the inside too much hot water juice of stifled cover 31 on the one hand, extrude through inlet port 311, and on the other hand can produce the resistance, extrudees the bubble, improves broken bubble effect. In the fifth embodiment, spill guard 32 is a spill guard.

In the fifth embodiment, as shown in fig. 17 and 18, the cover assembly further includes an elastic member 34, and the elastic member 34 applies an elastic force to the spill prevention member 32 in a direction toward the bottom of the anti-clogging cover 31. When bubbles entrain soup to push the overflow prevention member 32 to move upwards, when the overflow prevention member 32 moves to the limit of compression of the elastic member 34, the elastic member 34 applies an elastic force to the overflow prevention member 32 in the direction toward the bottom of the anti-blocking cover 31, so that the overflow prevention member 32 moves downwards. The elastic member 34 has a simple structure and a low cost. The arrangement of the elastic piece 34 improves the effect of floating separation and bubble breaking and improves the effect of overflowing bubbles carrying soup. The elastic member 34 of the fifth embodiment is preferably a compression spring.

In the fifth embodiment, as shown in fig. 17 and 18, the elastic member 34 is provided between the spill prevention member 32 and the cap body 10. Thus, both ends of the elastic member 34 are respectively abutted against the spill prevention member 32 and the lid body 10, and the structure is stable. At this time, the elastic member is positioned above the spill prevention member. Of course, in other embodiments not shown in the figures, the resilient member is disposed between the spill guard and the vent tube. Or, the cover body assembly further comprises a connecting structure, and the connecting structure is arranged on the anti-overflow piece. The connecting structure is arranged on the anti-blocking cover in a penetrating mode, and the elastic piece is arranged between the bottom surface of the anti-blocking cover and the bottom end of the connecting structure. At this time, the elastic member is located below the spill prevention member.

In the fifth embodiment, the spill prevention member 32 is made of a lightweight material having a density of 1.2g/cm³To 2.7g/cm³Within the range of (1). The anti-overflow piece can be pushed in the process of blocking bubbles, and the effect of physically blocking bubbles can be better achieved. The light material can be silica gel, plastic or aluminum.

As shown in fig. 19 to 21, in the sixth embodiment provided by the cover assembly of the present application, the difference from the fifth embodiment is that the spill guard is a spill plate. The spill plate is a flat plate without holes. Therefore, the non-porous flat plate can increase the blocking area relative to the porous flat plate, and the blocking and foam breaking effects of the anti-overflow plate are ensured.

The above examples are only preferred embodiments of the present application, and some embodiments not shown in the drawings will be listed below:

the anti-overflow piece is anti-overflow cover or anti-overflow board, does not set up the perforating hole on anti-overflow cover's diapire or the anti-overflow board, and at this moment, overflows the passageway and overflows the clearance and be located anti-overflow cover or anti-overflow board's lateral part and the second that prevents between anti-overflow cover's the lateral part including being located anti-overflow cover or anti-overflow board's the first clearance of overflowing between the bottom of anti-overflow cover and the bottom of preventing stifled cover.

In addition, besides the bubble breaking structures arranged in the first overflowing gap and the second overflowing gap, the bubble breaking structures can also be arranged in the through holes, or the bubble breaking structures are arranged in the first overflowing gap, the second overflowing gap and the through holes.

The bubble breaking structures in the first and second transfer gaps comprise 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 comprises a spiral groove or a plurality of grooves arranged at intervals along the hole wall of the through hole, and each groove is a horizontal annular groove arranged along the circumferential direction of the hole wall of the through hole.

The present application further provides a cooking utensil, the cooking utensil of this embodiment includes that the container and the lid subassembly of lid setting on the container, and the lid subassembly is foretell lid subassembly. The cooking appliance of the 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 embodiment not shown in the figures, the cooking appliance can also be an electric cooker, a low-pressure rice cooker, a soybean milk maker, a food processor, an electric stewpan, a cooking machine, a multifunctional pot and the like.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (19)

1. A cover assembly, comprising:

a cover body (10);

an exhaust pipe (20) which is arranged on the cover body (10) in a penetrating way;

a pressure limiting valve (51) disposed above the exhaust pipe (20);

the anti-blocking cover (31) is covered at the inlet (21) of the exhaust pipe (20), and an air inlet hole (311) is formed in the bottom of the anti-blocking cover (31);

the anti-overflow piece (32) is arranged in the anti-blocking cover (31) and is positioned above the air inlet hole (311);

the overflow channel is positioned on the overflow preventing piece (32) and/or between the overflow preventing piece (32) and the anti-blocking cover (31).

2. The cover assembly according to claim 1, characterized in that the spill guard (32) shields at least part of the air inlet holes (311).

3. The cover assembly according to claim 1, wherein the overflow channel comprises a through hole (321) provided at the bottom of the spill guard (32).

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

5. The cover assembly of claim 3, wherein the through-hole (321) comprises a first hole segment (3211) and a second hole segment (3212) located above the first hole segment (3211), the second hole segment (3212) having a smaller hole diameter than the first hole segment (3211).

6. The cover assembly of claim 1, wherein a bubble breaking structure is disposed within the transfer channel.

7. The cover assembly according to claim 3, characterized in that a bubble breaking structure is arranged between the outer side surface of the spill prevention member (32) and the inner side surface of the anti-blocking cover (31) and/or in the through hole (321).

8. The cover assembly according to claim 7, wherein the bubble breaking structure is a spiral groove (33) arranged along the wall of the through hole (321), or the bubble breaking structure comprises a plurality of spaced grooves (38), and each groove (38) is a horizontal annular groove arranged circumferentially along the wall of the through hole (321).

9. Cover assembly according to claim 6 or 7, characterized in that the overflow channel comprises a first overflow gap (41) between the bottom of the spill guard (32) and the bottom of the anti-blocking cover (31) and a second overflow gap (42) between the sides of the spill guard (32) and the anti-blocking cover (31).

10. The cover assembly according to claim 9, characterized in that the bubble breaking structure is a spiral groove (33) arranged along the outer side of the spill guard (32), or the bubble breaking structure comprises a plurality of spaced grooves (38), each groove (38) being a horizontal annular groove arranged circumferentially along the outer side of the spill guard (32).

11. The cover assembly according to claim 6 or 7, characterized in that, the overflow passageway includes spiral groove (33) and is located the bottom of anti-overflow piece (32) with prevent first overflow clearance (41) between the bottom of anti-blocking cover (31), prevent that anti-blocking cover (31) includes lateral part and bottom, the lateral part of anti-overflow piece (32) with prevent interference fit between the lateral part of anti-blocking cover (31), spiral groove (33) set up on the lateral surface of anti-overflow piece (32) and link up the top surface and the bottom surface of anti-overflow piece (32).

12. Cover assembly according to claim 1, characterized in that the spill guard (32) is floatably arranged within the anti-blocking cap (31).

13. The cover assembly according to claim 12, further comprising an elastic member (34), wherein the elastic member (34) applies an elastic force to the overflow preventing member (32) in a direction toward the bottom of the anti-clogging cover (31).

14. The cover assembly according to claim 13, characterized in that the resilient member (34) is arranged between the spill guard (32) and the cover (10), or in that the resilient member (34) is arranged between the spill guard (32) and the vent tube (20).

15. The cover assembly of claim 13,

lid subassembly still includes connection structure (37), connection structure (37) set up on anti-overflow piece (32), connection structure (37) wear to establish prevent stifled cover (31) are last, elastic component (34) set up prevent the bottom surface of stifled cover (31) with between the bottom of connection structure (37).

16. The cover assembly of claim 12, wherein said spill guard (32) is made of a lightweight material having a density of 1.2g/cm³To 2.7g/cm³Within the range of (1).

17. The cover assembly according to claim 1, characterized in that, the cover assembly further comprises a connecting structure (37) arranged on the anti-overflow piece (32), the anti-overflow piece (32) is connected with the anti-blocking cover (31) through the connecting structure (37), a connecting hole (312) is arranged on the bottom wall of the anti-blocking cover (31), the connecting structure (37) comprises a cylinder (371) and a blocking protrusion (372), the cylinder (371) is arranged between the anti-overflow piece (32) and the blocking protrusion (372), the cylinder (371) is arranged in the connecting hole (312), and the blocking protrusion (372) is arranged on the outer side of the connecting hole (312).

18. The cover assembly according to claim 1, characterized in that the spill guard (32) is a spill guard or a spill plate.

19. A cooking appliance comprising a container and a lid assembly for covering the container, wherein the lid assembly is as claimed in any one of claims 1 to 18.

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